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
)
3306 _bfd_error_handler (_("Could not assign '%pA' to an output section. "
3307 "Retry without --enable-non-contiguous-regions.\n"),
3308 stub_entry
->target_section
);
3312 stub_sec
= stub_entry
->stub_sec
;
3314 /* Make a note of the offset within the stubs for this entry. */
3315 stub_entry
->stub_offset
= stub_sec
->size
;
3316 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
3318 stub_bfd
= stub_sec
->owner
;
3320 /* This is the address of the stub destination. */
3321 sym_value
= (stub_entry
->target_value
3322 + stub_entry
->target_section
->output_offset
3323 + stub_entry
->target_section
->output_section
->vma
);
3325 if (stub_entry
->stub_type
== aarch64_stub_long_branch
)
3327 bfd_vma place
= (stub_entry
->stub_offset
+ stub_sec
->output_section
->vma
3328 + stub_sec
->output_offset
);
3330 /* See if we can relax the stub. */
3331 if (aarch64_valid_for_adrp_p (sym_value
, place
))
3332 stub_entry
->stub_type
= aarch64_select_branch_stub (sym_value
, place
);
3335 switch (stub_entry
->stub_type
)
3337 case aarch64_stub_adrp_branch
:
3338 template = aarch64_adrp_branch_stub
;
3339 template_size
= sizeof (aarch64_adrp_branch_stub
);
3341 case aarch64_stub_long_branch
:
3342 template = aarch64_long_branch_stub
;
3343 template_size
= sizeof (aarch64_long_branch_stub
);
3345 case aarch64_stub_erratum_835769_veneer
:
3346 template = aarch64_erratum_835769_stub
;
3347 template_size
= sizeof (aarch64_erratum_835769_stub
);
3349 case aarch64_stub_erratum_843419_veneer
:
3350 template = aarch64_erratum_843419_stub
;
3351 template_size
= sizeof (aarch64_erratum_843419_stub
);
3357 for (i
= 0; i
< (template_size
/ sizeof template[0]); i
++)
3359 bfd_putl32 (template[i
], loc
);
3363 template_size
= (template_size
+ 7) & ~7;
3364 stub_sec
->size
+= template_size
;
3366 switch (stub_entry
->stub_type
)
3368 case aarch64_stub_adrp_branch
:
3369 if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21
), stub_bfd
, stub_sec
,
3370 stub_entry
->stub_offset
, sym_value
))
3371 /* The stub would not have been relaxed if the offset was out
3375 if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC
), stub_bfd
, stub_sec
,
3376 stub_entry
->stub_offset
+ 4, sym_value
))
3380 case aarch64_stub_long_branch
:
3381 /* We want the value relative to the address 12 bytes back from the
3383 if (!aarch64_relocate (AARCH64_R (PRELNN
), stub_bfd
, stub_sec
,
3384 stub_entry
->stub_offset
+ 16, sym_value
+ 12))
3388 case aarch64_stub_erratum_835769_veneer
:
3389 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
3390 + stub_entry
->target_section
->output_offset
3391 + stub_entry
->target_value
;
3392 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
3393 + stub_entry
->stub_sec
->output_offset
3394 + stub_entry
->stub_offset
;
3395 branch_offset
= veneered_insn_loc
- veneer_entry_loc
;
3396 branch_offset
>>= 2;
3397 branch_offset
&= 0x3ffffff;
3398 bfd_putl32 (stub_entry
->veneered_insn
,
3399 stub_sec
->contents
+ stub_entry
->stub_offset
);
3400 bfd_putl32 (template[1] | branch_offset
,
3401 stub_sec
->contents
+ stub_entry
->stub_offset
+ 4);
3404 case aarch64_stub_erratum_843419_veneer
:
3405 if (!aarch64_relocate (AARCH64_R (JUMP26
), stub_bfd
, stub_sec
,
3406 stub_entry
->stub_offset
+ 4, sym_value
+ 4))
3417 /* As above, but don't actually build the stub. Just bump offset so
3418 we know stub section sizes. */
3421 aarch64_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
3423 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3424 struct elf_aarch64_link_hash_table
*htab
;
3427 /* Massage our args to the form they really have. */
3428 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
3429 htab
= (struct elf_aarch64_link_hash_table
*) in_arg
;
3431 switch (stub_entry
->stub_type
)
3433 case aarch64_stub_adrp_branch
:
3434 size
= sizeof (aarch64_adrp_branch_stub
);
3436 case aarch64_stub_long_branch
:
3437 size
= sizeof (aarch64_long_branch_stub
);
3439 case aarch64_stub_erratum_835769_veneer
:
3440 size
= sizeof (aarch64_erratum_835769_stub
);
3442 case aarch64_stub_erratum_843419_veneer
:
3444 if (htab
->fix_erratum_843419
== ERRAT_ADR
)
3446 size
= sizeof (aarch64_erratum_843419_stub
);
3453 size
= (size
+ 7) & ~7;
3454 stub_entry
->stub_sec
->size
+= size
;
3458 /* External entry points for sizing and building linker stubs. */
3460 /* Set up various things so that we can make a list of input sections
3461 for each output section included in the link. Returns -1 on error,
3462 0 when no stubs will be needed, and 1 on success. */
3465 elfNN_aarch64_setup_section_lists (bfd
*output_bfd
,
3466 struct bfd_link_info
*info
)
3469 unsigned int bfd_count
;
3470 unsigned int top_id
, top_index
;
3472 asection
**input_list
, **list
;
3474 struct elf_aarch64_link_hash_table
*htab
=
3475 elf_aarch64_hash_table (info
);
3477 if (!is_elf_hash_table (htab
))
3480 /* Count the number of input BFDs and find the top input section id. */
3481 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3482 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
3485 for (section
= input_bfd
->sections
;
3486 section
!= NULL
; section
= section
->next
)
3488 if (top_id
< section
->id
)
3489 top_id
= section
->id
;
3492 htab
->bfd_count
= bfd_count
;
3494 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3495 htab
->stub_group
= bfd_zmalloc (amt
);
3496 if (htab
->stub_group
== NULL
)
3499 /* We can't use output_bfd->section_count here to find the top output
3500 section index as some sections may have been removed, and
3501 _bfd_strip_section_from_output doesn't renumber the indices. */
3502 for (section
= output_bfd
->sections
, top_index
= 0;
3503 section
!= NULL
; section
= section
->next
)
3505 if (top_index
< section
->index
)
3506 top_index
= section
->index
;
3509 htab
->top_index
= top_index
;
3510 amt
= sizeof (asection
*) * (top_index
+ 1);
3511 input_list
= bfd_malloc (amt
);
3512 htab
->input_list
= input_list
;
3513 if (input_list
== NULL
)
3516 /* For sections we aren't interested in, mark their entries with a
3517 value we can check later. */
3518 list
= input_list
+ top_index
;
3520 *list
= bfd_abs_section_ptr
;
3521 while (list
-- != input_list
);
3523 for (section
= output_bfd
->sections
;
3524 section
!= NULL
; section
= section
->next
)
3526 if ((section
->flags
& SEC_CODE
) != 0)
3527 input_list
[section
->index
] = NULL
;
3533 /* Used by elfNN_aarch64_next_input_section and group_sections. */
3534 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3536 /* The linker repeatedly calls this function for each input section,
3537 in the order that input sections are linked into output sections.
3538 Build lists of input sections to determine groupings between which
3539 we may insert linker stubs. */
3542 elfNN_aarch64_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
3544 struct elf_aarch64_link_hash_table
*htab
=
3545 elf_aarch64_hash_table (info
);
3547 if (isec
->output_section
->index
<= htab
->top_index
)
3549 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
3551 if (*list
!= bfd_abs_section_ptr
)
3553 /* Steal the link_sec pointer for our list. */
3554 /* This happens to make the list in reverse order,
3555 which is what we want. */
3556 PREV_SEC (isec
) = *list
;
3562 /* See whether we can group stub sections together. Grouping stub
3563 sections may result in fewer stubs. More importantly, we need to
3564 put all .init* and .fini* stubs at the beginning of the .init or
3565 .fini output sections respectively, because glibc splits the
3566 _init and _fini functions into multiple parts. Putting a stub in
3567 the middle of a function is not a good idea. */
3570 group_sections (struct elf_aarch64_link_hash_table
*htab
,
3571 bfd_size_type stub_group_size
,
3572 bfd_boolean stubs_always_before_branch
)
3574 asection
**list
= htab
->input_list
+ htab
->top_index
;
3578 asection
*tail
= *list
;
3580 if (tail
== bfd_abs_section_ptr
)
3583 while (tail
!= NULL
)
3587 bfd_size_type total
;
3591 while ((prev
= PREV_SEC (curr
)) != NULL
3592 && ((total
+= curr
->output_offset
- prev
->output_offset
)
3596 /* OK, the size from the start of CURR to the end is less
3597 than stub_group_size and thus can be handled by one stub
3598 section. (Or the tail section is itself larger than
3599 stub_group_size, in which case we may be toast.)
3600 We should really be keeping track of the total size of
3601 stubs added here, as stubs contribute to the final output
3605 prev
= PREV_SEC (tail
);
3606 /* Set up this stub group. */
3607 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3609 while (tail
!= curr
&& (tail
= prev
) != NULL
);
3611 /* But wait, there's more! Input sections up to stub_group_size
3612 bytes before the stub section can be handled by it too. */
3613 if (!stubs_always_before_branch
)
3617 && ((total
+= tail
->output_offset
- prev
->output_offset
)
3621 prev
= PREV_SEC (tail
);
3622 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3628 while (list
-- != htab
->input_list
);
3630 free (htab
->input_list
);
3635 #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3637 #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3638 #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3639 #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3640 #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3641 #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3642 #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3644 #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3645 #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3646 #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3647 #define AARCH64_ZR 0x1f
3649 /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3650 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3652 #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3653 #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3654 #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3655 #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3656 #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3657 #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3658 #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3659 #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3660 #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3661 #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3662 #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3663 #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3664 #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3665 #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3666 #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3667 #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3668 #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3669 #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3671 /* Classify an INSN if it is indeed a load/store.
3673 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3675 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3678 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
3681 aarch64_mem_op_p (uint32_t insn
, unsigned int *rt
, unsigned int *rt2
,
3682 bfd_boolean
*pair
, bfd_boolean
*load
)
3690 /* Bail out quickly if INSN doesn't fall into the load-store
3692 if (!AARCH64_LDST (insn
))
3697 if (AARCH64_LDST_EX (insn
))
3699 *rt
= AARCH64_RT (insn
);
3701 if (AARCH64_BIT (insn
, 21) == 1)
3704 *rt2
= AARCH64_RT2 (insn
);
3706 *load
= AARCH64_LD (insn
);
3709 else if (AARCH64_LDST_NAP (insn
)
3710 || AARCH64_LDSTP_PI (insn
)
3711 || AARCH64_LDSTP_O (insn
)
3712 || AARCH64_LDSTP_PRE (insn
))
3715 *rt
= AARCH64_RT (insn
);
3716 *rt2
= AARCH64_RT2 (insn
);
3717 *load
= AARCH64_LD (insn
);
3720 else if (AARCH64_LDST_PCREL (insn
)
3721 || AARCH64_LDST_UI (insn
)
3722 || AARCH64_LDST_PIIMM (insn
)
3723 || AARCH64_LDST_U (insn
)
3724 || AARCH64_LDST_PREIMM (insn
)
3725 || AARCH64_LDST_RO (insn
)
3726 || AARCH64_LDST_UIMM (insn
))
3728 *rt
= AARCH64_RT (insn
);
3730 if (AARCH64_LDST_PCREL (insn
))
3732 opc
= AARCH64_BITS (insn
, 22, 2);
3733 v
= AARCH64_BIT (insn
, 26);
3734 opc_v
= opc
| (v
<< 2);
3735 *load
= (opc_v
== 1 || opc_v
== 2 || opc_v
== 3
3736 || opc_v
== 5 || opc_v
== 7);
3739 else if (AARCH64_LDST_SIMD_M (insn
)
3740 || AARCH64_LDST_SIMD_M_PI (insn
))
3742 *rt
= AARCH64_RT (insn
);
3743 *load
= AARCH64_BIT (insn
, 22);
3744 opcode
= (insn
>> 12) & 0xf;
3771 else if (AARCH64_LDST_SIMD_S (insn
)
3772 || AARCH64_LDST_SIMD_S_PI (insn
))
3774 *rt
= AARCH64_RT (insn
);
3775 r
= (insn
>> 21) & 1;
3776 *load
= AARCH64_BIT (insn
, 22);
3777 opcode
= (insn
>> 13) & 0x7;
3789 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3797 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3809 /* Return TRUE if INSN is multiply-accumulate. */
3812 aarch64_mlxl_p (uint32_t insn
)
3814 uint32_t op31
= AARCH64_OP31 (insn
);
3816 if (AARCH64_MAC (insn
)
3817 && (op31
== 0 || op31
== 1 || op31
== 5)
3818 /* Exclude MUL instructions which are encoded as a multiple accumulate
3820 && AARCH64_RA (insn
) != AARCH64_ZR
)
3826 /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3827 it is possible for a 64-bit multiply-accumulate instruction to generate an
3828 incorrect result. The details are quite complex and hard to
3829 determine statically, since branches in the code may exist in some
3830 circumstances, but all cases end with a memory (load, store, or
3831 prefetch) instruction followed immediately by the multiply-accumulate
3832 operation. We employ a linker patching technique, by moving the potentially
3833 affected multiply-accumulate instruction into a patch region and replacing
3834 the original instruction with a branch to the patch. This function checks
3835 if INSN_1 is the memory operation followed by a multiply-accumulate
3836 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3837 if INSN_1 and INSN_2 are safe. */
3840 aarch64_erratum_sequence (uint32_t insn_1
, uint32_t insn_2
)
3850 if (aarch64_mlxl_p (insn_2
)
3851 && aarch64_mem_op_p (insn_1
, &rt
, &rt2
, &pair
, &load
))
3853 /* Any SIMD memory op is independent of the subsequent MLA
3854 by definition of the erratum. */
3855 if (AARCH64_BIT (insn_1
, 26))
3858 /* If not SIMD, check for integer memory ops and MLA relationship. */
3859 rn
= AARCH64_RN (insn_2
);
3860 ra
= AARCH64_RA (insn_2
);
3861 rm
= AARCH64_RM (insn_2
);
3863 /* If this is a load and there's a true(RAW) dependency, we are safe
3864 and this is not an erratum sequence. */
3866 (rt
== rn
|| rt
== rm
|| rt
== ra
3867 || (pair
&& (rt2
== rn
|| rt2
== rm
|| rt2
== ra
))))
3870 /* We conservatively put out stubs for all other cases (including
3878 /* Used to order a list of mapping symbols by address. */
3881 elf_aarch64_compare_mapping (const void *a
, const void *b
)
3883 const elf_aarch64_section_map
*amap
= (const elf_aarch64_section_map
*) a
;
3884 const elf_aarch64_section_map
*bmap
= (const elf_aarch64_section_map
*) b
;
3886 if (amap
->vma
> bmap
->vma
)
3888 else if (amap
->vma
< bmap
->vma
)
3890 else if (amap
->type
> bmap
->type
)
3891 /* Ensure results do not depend on the host qsort for objects with
3892 multiple mapping symbols at the same address by sorting on type
3895 else if (amap
->type
< bmap
->type
)
3903 _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes
)
3905 char *stub_name
= (char *) bfd_malloc
3906 (strlen ("__erratum_835769_veneer_") + 16);
3907 if (stub_name
!= NULL
)
3908 sprintf (stub_name
,"__erratum_835769_veneer_%d", num_fixes
);
3912 /* Scan for Cortex-A53 erratum 835769 sequence.
3914 Return TRUE else FALSE on abnormal termination. */
3917 _bfd_aarch64_erratum_835769_scan (bfd
*input_bfd
,
3918 struct bfd_link_info
*info
,
3919 unsigned int *num_fixes_p
)
3922 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3923 unsigned int num_fixes
= *num_fixes_p
;
3928 for (section
= input_bfd
->sections
;
3930 section
= section
->next
)
3932 bfd_byte
*contents
= NULL
;
3933 struct _aarch64_elf_section_data
*sec_data
;
3936 if (elf_section_type (section
) != SHT_PROGBITS
3937 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
3938 || (section
->flags
& SEC_EXCLUDE
) != 0
3939 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
3940 || (section
->output_section
== bfd_abs_section_ptr
))
3943 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
3944 contents
= elf_section_data (section
)->this_hdr
.contents
;
3945 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
3948 sec_data
= elf_aarch64_section_data (section
);
3950 qsort (sec_data
->map
, sec_data
->mapcount
,
3951 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
3953 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3955 unsigned int span_start
= sec_data
->map
[span
].vma
;
3956 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
3957 ? sec_data
->map
[0].vma
+ section
->size
3958 : sec_data
->map
[span
+ 1].vma
);
3960 char span_type
= sec_data
->map
[span
].type
;
3962 if (span_type
== 'd')
3965 for (i
= span_start
; i
+ 4 < span_end
; i
+= 4)
3967 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
3968 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
3970 if (aarch64_erratum_sequence (insn_1
, insn_2
))
3972 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3973 char *stub_name
= _bfd_aarch64_erratum_835769_stub_name (num_fixes
);
3977 stub_entry
= _bfd_aarch64_add_stub_entry_in_group (stub_name
,
3983 stub_entry
->stub_type
= aarch64_stub_erratum_835769_veneer
;
3984 stub_entry
->target_section
= section
;
3985 stub_entry
->target_value
= i
+ 4;
3986 stub_entry
->veneered_insn
= insn_2
;
3987 stub_entry
->output_name
= stub_name
;
3992 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
3996 *num_fixes_p
= num_fixes
;
4002 /* Test if instruction INSN is ADRP. */
4005 _bfd_aarch64_adrp_p (uint32_t insn
)
4007 return ((insn
& AARCH64_ADRP_OP_MASK
) == AARCH64_ADRP_OP
);
4011 /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
4014 _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1
, uint32_t insn_2
,
4022 return (aarch64_mem_op_p (insn_2
, &rt
, &rt2
, &pair
, &load
)
4025 && AARCH64_LDST_UIMM (insn_3
)
4026 && AARCH64_RN (insn_3
) == AARCH64_RD (insn_1
));
4030 /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
4032 Return TRUE if section CONTENTS at offset I contains one of the
4033 erratum 843419 sequences, otherwise return FALSE. If a sequence is
4034 seen set P_VENEER_I to the offset of the final LOAD/STORE
4035 instruction in the sequence.
4039 _bfd_aarch64_erratum_843419_p (bfd_byte
*contents
, bfd_vma vma
,
4040 bfd_vma i
, bfd_vma span_end
,
4041 bfd_vma
*p_veneer_i
)
4043 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
4045 if (!_bfd_aarch64_adrp_p (insn_1
))
4048 if (span_end
< i
+ 12)
4051 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
4052 uint32_t insn_3
= bfd_getl32 (contents
+ i
+ 8);
4054 if ((vma
& 0xfff) != 0xff8 && (vma
& 0xfff) != 0xffc)
4057 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_3
))
4059 *p_veneer_i
= i
+ 8;
4063 if (span_end
< i
+ 16)
4066 uint32_t insn_4
= bfd_getl32 (contents
+ i
+ 12);
4068 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_4
))
4070 *p_veneer_i
= i
+ 12;
4078 /* Resize all stub sections. */
4081 _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table
*htab
)
4085 /* OK, we've added some stubs. Find out the new size of the
4087 for (section
= htab
->stub_bfd
->sections
;
4088 section
!= NULL
; section
= section
->next
)
4090 /* Ignore non-stub sections. */
4091 if (!strstr (section
->name
, STUB_SUFFIX
))
4096 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_size_one_stub
, htab
);
4098 for (section
= htab
->stub_bfd
->sections
;
4099 section
!= NULL
; section
= section
->next
)
4101 if (!strstr (section
->name
, STUB_SUFFIX
))
4104 /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
4105 as long branch stubs contain a 64-bit address. */
4109 /* Ensure all stub sections have a size which is a multiple of
4110 4096. This is important in order to ensure that the insertion
4111 of stub sections does not in itself move existing code around
4112 in such a way that new errata sequences are created. We only do this
4113 when the ADRP workaround is enabled. If only the ADR workaround is
4114 enabled then the stubs workaround won't ever be used. */
4115 if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
4117 section
->size
= BFD_ALIGN (section
->size
, 0x1000);
4121 /* Construct an erratum 843419 workaround stub name. */
4124 _bfd_aarch64_erratum_843419_stub_name (asection
*input_section
,
4127 const bfd_size_type len
= 8 + 4 + 1 + 8 + 1 + 16 + 1;
4128 char *stub_name
= bfd_malloc (len
);
4130 if (stub_name
!= NULL
)
4131 snprintf (stub_name
, len
, "e843419@%04x_%08x_%" BFD_VMA_FMT
"x",
4132 input_section
->owner
->id
,
4138 /* Build a stub_entry structure describing an 843419 fixup.
4140 The stub_entry constructed is populated with the bit pattern INSN
4141 of the instruction located at OFFSET within input SECTION.
4143 Returns TRUE on success. */
4146 _bfd_aarch64_erratum_843419_fixup (uint32_t insn
,
4147 bfd_vma adrp_offset
,
4148 bfd_vma ldst_offset
,
4150 struct bfd_link_info
*info
)
4152 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4154 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4156 stub_name
= _bfd_aarch64_erratum_843419_stub_name (section
, ldst_offset
);
4157 if (stub_name
== NULL
)
4159 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4167 /* We always place an 843419 workaround veneer in the stub section
4168 attached to the input section in which an erratum sequence has
4169 been found. This ensures that later in the link process (in
4170 elfNN_aarch64_write_section) when we copy the veneered
4171 instruction from the input section into the stub section the
4172 copied instruction will have had any relocations applied to it.
4173 If we placed workaround veneers in any other stub section then we
4174 could not assume that all relocations have been processed on the
4175 corresponding input section at the point we output the stub
4178 stub_entry
= _bfd_aarch64_add_stub_entry_after (stub_name
, section
, htab
);
4179 if (stub_entry
== NULL
)
4185 stub_entry
->adrp_offset
= adrp_offset
;
4186 stub_entry
->target_value
= ldst_offset
;
4187 stub_entry
->target_section
= section
;
4188 stub_entry
->stub_type
= aarch64_stub_erratum_843419_veneer
;
4189 stub_entry
->veneered_insn
= insn
;
4190 stub_entry
->output_name
= stub_name
;
4196 /* Scan an input section looking for the signature of erratum 843419.
4198 Scans input SECTION in INPUT_BFD looking for erratum 843419
4199 signatures, for each signature found a stub_entry is created
4200 describing the location of the erratum for subsequent fixup.
4202 Return TRUE on successful scan, FALSE on failure to scan.
4206 _bfd_aarch64_erratum_843419_scan (bfd
*input_bfd
, asection
*section
,
4207 struct bfd_link_info
*info
)
4209 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4214 if (elf_section_type (section
) != SHT_PROGBITS
4215 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
4216 || (section
->flags
& SEC_EXCLUDE
) != 0
4217 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
4218 || (section
->output_section
== bfd_abs_section_ptr
))
4223 bfd_byte
*contents
= NULL
;
4224 struct _aarch64_elf_section_data
*sec_data
;
4227 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
4228 contents
= elf_section_data (section
)->this_hdr
.contents
;
4229 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
4232 sec_data
= elf_aarch64_section_data (section
);
4234 qsort (sec_data
->map
, sec_data
->mapcount
,
4235 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
4237 for (span
= 0; span
< sec_data
->mapcount
; span
++)
4239 unsigned int span_start
= sec_data
->map
[span
].vma
;
4240 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
4241 ? sec_data
->map
[0].vma
+ section
->size
4242 : sec_data
->map
[span
+ 1].vma
);
4244 char span_type
= sec_data
->map
[span
].type
;
4246 if (span_type
== 'd')
4249 for (i
= span_start
; i
+ 8 < span_end
; i
+= 4)
4251 bfd_vma vma
= (section
->output_section
->vma
4252 + section
->output_offset
4256 if (_bfd_aarch64_erratum_843419_p
4257 (contents
, vma
, i
, span_end
, &veneer_i
))
4259 uint32_t insn
= bfd_getl32 (contents
+ veneer_i
);
4261 if (!_bfd_aarch64_erratum_843419_fixup (insn
, i
, veneer_i
,
4268 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
4277 /* Determine and set the size of the stub section for a final link.
4279 The basic idea here is to examine all the relocations looking for
4280 PC-relative calls to a target that is unreachable with a "bl"
4284 elfNN_aarch64_size_stubs (bfd
*output_bfd
,
4286 struct bfd_link_info
*info
,
4287 bfd_signed_vma group_size
,
4288 asection
* (*add_stub_section
) (const char *,
4290 void (*layout_sections_again
) (void))
4292 bfd_size_type stub_group_size
;
4293 bfd_boolean stubs_always_before_branch
;
4294 bfd_boolean stub_changed
= FALSE
;
4295 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4296 unsigned int num_erratum_835769_fixes
= 0;
4298 /* Propagate mach to stub bfd, because it may not have been
4299 finalized when we created stub_bfd. */
4300 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
4301 bfd_get_mach (output_bfd
));
4303 /* Stash our params away. */
4304 htab
->stub_bfd
= stub_bfd
;
4305 htab
->add_stub_section
= add_stub_section
;
4306 htab
->layout_sections_again
= layout_sections_again
;
4307 stubs_always_before_branch
= group_size
< 0;
4309 stub_group_size
= -group_size
;
4311 stub_group_size
= group_size
;
4313 if (stub_group_size
== 1)
4315 /* Default values. */
4316 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
4317 stub_group_size
= 127 * 1024 * 1024;
4320 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
4322 (*htab
->layout_sections_again
) ();
4324 if (htab
->fix_erratum_835769
)
4328 for (input_bfd
= info
->input_bfds
;
4329 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
4331 if (!is_aarch64_elf (input_bfd
)
4332 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4335 if (!_bfd_aarch64_erratum_835769_scan (input_bfd
, info
,
4336 &num_erratum_835769_fixes
))
4340 _bfd_aarch64_resize_stubs (htab
);
4341 (*htab
->layout_sections_again
) ();
4344 if (htab
->fix_erratum_843419
!= ERRAT_NONE
)
4348 for (input_bfd
= info
->input_bfds
;
4350 input_bfd
= input_bfd
->link
.next
)
4354 if (!is_aarch64_elf (input_bfd
)
4355 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4358 for (section
= input_bfd
->sections
;
4360 section
= section
->next
)
4361 if (!_bfd_aarch64_erratum_843419_scan (input_bfd
, section
, info
))
4365 _bfd_aarch64_resize_stubs (htab
);
4366 (*htab
->layout_sections_again
) ();
4373 for (input_bfd
= info
->input_bfds
;
4374 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
4376 Elf_Internal_Shdr
*symtab_hdr
;
4378 Elf_Internal_Sym
*local_syms
= NULL
;
4380 if (!is_aarch64_elf (input_bfd
)
4381 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4384 /* We'll need the symbol table in a second. */
4385 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
4386 if (symtab_hdr
->sh_info
== 0)
4389 /* Walk over each section attached to the input bfd. */
4390 for (section
= input_bfd
->sections
;
4391 section
!= NULL
; section
= section
->next
)
4393 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
4395 /* If there aren't any relocs, then there's nothing more
4397 if ((section
->flags
& SEC_RELOC
) == 0
4398 || section
->reloc_count
== 0
4399 || (section
->flags
& SEC_CODE
) == 0)
4402 /* If this section is a link-once section that will be
4403 discarded, then don't create any stubs. */
4404 if (section
->output_section
== NULL
4405 || section
->output_section
->owner
!= output_bfd
)
4408 /* Get the relocs. */
4410 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
4411 NULL
, info
->keep_memory
);
4412 if (internal_relocs
== NULL
)
4413 goto error_ret_free_local
;
4415 /* Now examine each relocation. */
4416 irela
= internal_relocs
;
4417 irelaend
= irela
+ section
->reloc_count
;
4418 for (; irela
< irelaend
; irela
++)
4420 unsigned int r_type
, r_indx
;
4421 enum elf_aarch64_stub_type stub_type
;
4422 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4425 bfd_vma destination
;
4426 struct elf_aarch64_link_hash_entry
*hash
;
4427 const char *sym_name
;
4429 const asection
*id_sec
;
4430 unsigned char st_type
;
4433 r_type
= ELFNN_R_TYPE (irela
->r_info
);
4434 r_indx
= ELFNN_R_SYM (irela
->r_info
);
4436 if (r_type
>= (unsigned int) R_AARCH64_end
)
4438 bfd_set_error (bfd_error_bad_value
);
4439 error_ret_free_internal
:
4440 if (elf_section_data (section
)->relocs
== NULL
)
4441 free (internal_relocs
);
4442 goto error_ret_free_local
;
4445 /* Only look for stubs on unconditional branch and
4446 branch and link instructions. */
4447 if (r_type
!= (unsigned int) AARCH64_R (CALL26
)
4448 && r_type
!= (unsigned int) AARCH64_R (JUMP26
))
4451 /* Now determine the call target, its name, value,
4458 if (r_indx
< symtab_hdr
->sh_info
)
4460 /* It's a local symbol. */
4461 Elf_Internal_Sym
*sym
;
4462 Elf_Internal_Shdr
*hdr
;
4464 if (local_syms
== NULL
)
4467 = (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4468 if (local_syms
== NULL
)
4470 = bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
4471 symtab_hdr
->sh_info
, 0,
4473 if (local_syms
== NULL
)
4474 goto error_ret_free_internal
;
4477 sym
= local_syms
+ r_indx
;
4478 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
4479 sym_sec
= hdr
->bfd_section
;
4481 /* This is an undefined symbol. It can never
4485 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
4486 sym_value
= sym
->st_value
;
4487 destination
= (sym_value
+ irela
->r_addend
4488 + sym_sec
->output_offset
4489 + sym_sec
->output_section
->vma
);
4490 st_type
= ELF_ST_TYPE (sym
->st_info
);
4492 = bfd_elf_string_from_elf_section (input_bfd
,
4493 symtab_hdr
->sh_link
,
4500 e_indx
= r_indx
- symtab_hdr
->sh_info
;
4501 hash
= ((struct elf_aarch64_link_hash_entry
*)
4502 elf_sym_hashes (input_bfd
)[e_indx
]);
4504 while (hash
->root
.root
.type
== bfd_link_hash_indirect
4505 || hash
->root
.root
.type
== bfd_link_hash_warning
)
4506 hash
= ((struct elf_aarch64_link_hash_entry
*)
4507 hash
->root
.root
.u
.i
.link
);
4509 if (hash
->root
.root
.type
== bfd_link_hash_defined
4510 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
4512 struct elf_aarch64_link_hash_table
*globals
=
4513 elf_aarch64_hash_table (info
);
4514 sym_sec
= hash
->root
.root
.u
.def
.section
;
4515 sym_value
= hash
->root
.root
.u
.def
.value
;
4516 /* For a destination in a shared library,
4517 use the PLT stub as target address to
4518 decide whether a branch stub is
4520 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4521 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4523 sym_sec
= globals
->root
.splt
;
4524 sym_value
= hash
->root
.plt
.offset
;
4525 if (sym_sec
->output_section
!= NULL
)
4526 destination
= (sym_value
4527 + sym_sec
->output_offset
4529 sym_sec
->output_section
->vma
);
4531 else if (sym_sec
->output_section
!= NULL
)
4532 destination
= (sym_value
+ irela
->r_addend
4533 + sym_sec
->output_offset
4534 + sym_sec
->output_section
->vma
);
4536 else if (hash
->root
.root
.type
== bfd_link_hash_undefined
4537 || (hash
->root
.root
.type
4538 == bfd_link_hash_undefweak
))
4540 /* For a shared library, use the PLT stub as
4541 target address to decide whether a long
4542 branch stub is needed.
4543 For absolute code, they cannot be handled. */
4544 struct elf_aarch64_link_hash_table
*globals
=
4545 elf_aarch64_hash_table (info
);
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
);
4563 bfd_set_error (bfd_error_bad_value
);
4564 goto error_ret_free_internal
;
4566 st_type
= ELF_ST_TYPE (hash
->root
.type
);
4567 sym_name
= hash
->root
.root
.root
.string
;
4570 /* Determine what (if any) linker stub is needed. */
4571 stub_type
= aarch64_type_of_stub (section
, irela
, sym_sec
,
4572 st_type
, destination
);
4573 if (stub_type
== aarch64_stub_none
)
4576 /* Support for grouping stub sections. */
4577 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
4579 /* Get the name of this stub. */
4580 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, hash
,
4583 goto error_ret_free_internal
;
4586 aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
4587 stub_name
, FALSE
, FALSE
);
4588 if (stub_entry
!= NULL
)
4590 /* The proper stub has already been created. */
4592 /* Always update this stub's target since it may have
4593 changed after layout. */
4594 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
4598 stub_entry
= _bfd_aarch64_add_stub_entry_in_group
4599 (stub_name
, section
, htab
);
4600 if (stub_entry
== NULL
)
4603 goto error_ret_free_internal
;
4606 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
4607 stub_entry
->target_section
= sym_sec
;
4608 stub_entry
->stub_type
= stub_type
;
4609 stub_entry
->h
= hash
;
4610 stub_entry
->st_type
= st_type
;
4612 if (sym_name
== NULL
)
4613 sym_name
= "unnamed";
4614 len
= sizeof (STUB_ENTRY_NAME
) + strlen (sym_name
);
4615 stub_entry
->output_name
= bfd_alloc (htab
->stub_bfd
, len
);
4616 if (stub_entry
->output_name
== NULL
)
4619 goto error_ret_free_internal
;
4622 snprintf (stub_entry
->output_name
, len
, STUB_ENTRY_NAME
,
4625 stub_changed
= TRUE
;
4628 /* We're done with the internal relocs, free them. */
4629 if (elf_section_data (section
)->relocs
== NULL
)
4630 free (internal_relocs
);
4637 _bfd_aarch64_resize_stubs (htab
);
4639 /* Ask the linker to do its stuff. */
4640 (*htab
->layout_sections_again
) ();
4641 stub_changed
= FALSE
;
4646 error_ret_free_local
:
4650 /* Build all the stubs associated with the current output file. The
4651 stubs are kept in a hash table attached to the main linker hash
4652 table. We also set up the .plt entries for statically linked PIC
4653 functions here. This function is called via aarch64_elf_finish in the
4657 elfNN_aarch64_build_stubs (struct bfd_link_info
*info
)
4660 struct bfd_hash_table
*table
;
4661 struct elf_aarch64_link_hash_table
*htab
;
4663 htab
= elf_aarch64_hash_table (info
);
4665 for (stub_sec
= htab
->stub_bfd
->sections
;
4666 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
4670 /* Ignore non-stub sections. */
4671 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
4674 /* Allocate memory to hold the linker stubs. */
4675 size
= stub_sec
->size
;
4676 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
4677 if (stub_sec
->contents
== NULL
&& size
!= 0)
4681 /* Add a branch around the stub section, and a nop, to keep it 8 byte
4682 aligned, as long branch stubs contain a 64-bit address. */
4683 bfd_putl32 (0x14000000 | (size
>> 2), stub_sec
->contents
);
4684 bfd_putl32 (INSN_NOP
, stub_sec
->contents
+ 4);
4685 stub_sec
->size
+= 8;
4688 /* Build the stubs as directed by the stub hash table. */
4689 table
= &htab
->stub_hash_table
;
4690 bfd_hash_traverse (table
, aarch64_build_one_stub
, info
);
4696 /* Add an entry to the code/data map for section SEC. */
4699 elfNN_aarch64_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
4701 struct _aarch64_elf_section_data
*sec_data
=
4702 elf_aarch64_section_data (sec
);
4703 unsigned int newidx
;
4705 if (sec_data
->map
== NULL
)
4707 sec_data
->map
= bfd_malloc (sizeof (elf_aarch64_section_map
));
4708 sec_data
->mapcount
= 0;
4709 sec_data
->mapsize
= 1;
4712 newidx
= sec_data
->mapcount
++;
4714 if (sec_data
->mapcount
> sec_data
->mapsize
)
4716 sec_data
->mapsize
*= 2;
4717 sec_data
->map
= bfd_realloc_or_free
4718 (sec_data
->map
, sec_data
->mapsize
* sizeof (elf_aarch64_section_map
));
4723 sec_data
->map
[newidx
].vma
= vma
;
4724 sec_data
->map
[newidx
].type
= type
;
4729 /* Initialise maps of insn/data for input BFDs. */
4731 bfd_elfNN_aarch64_init_maps (bfd
*abfd
)
4733 Elf_Internal_Sym
*isymbuf
;
4734 Elf_Internal_Shdr
*hdr
;
4735 unsigned int i
, localsyms
;
4737 /* Make sure that we are dealing with an AArch64 elf binary. */
4738 if (!is_aarch64_elf (abfd
))
4741 if ((abfd
->flags
& DYNAMIC
) != 0)
4744 hdr
= &elf_symtab_hdr (abfd
);
4745 localsyms
= hdr
->sh_info
;
4747 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4748 should contain the number of local symbols, which should come before any
4749 global symbols. Mapping symbols are always local. */
4750 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
, NULL
);
4752 /* No internal symbols read? Skip this BFD. */
4753 if (isymbuf
== NULL
)
4756 for (i
= 0; i
< localsyms
; i
++)
4758 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
4759 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4762 if (sec
!= NULL
&& ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
4764 name
= bfd_elf_string_from_elf_section (abfd
,
4768 if (bfd_is_aarch64_special_symbol_name
4769 (name
, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP
))
4770 elfNN_aarch64_section_map_add (sec
, name
[1], isym
->st_value
);
4776 setup_plt_values (struct bfd_link_info
*link_info
,
4777 aarch64_plt_type plt_type
)
4779 struct elf_aarch64_link_hash_table
*globals
;
4780 globals
= elf_aarch64_hash_table (link_info
);
4782 if (plt_type
== PLT_BTI_PAC
)
4784 globals
->plt0_entry
= elfNN_aarch64_small_plt0_bti_entry
;
4786 /* Only in ET_EXEC we need PLTn with BTI. */
4787 if (bfd_link_pde (link_info
))
4789 globals
->plt_entry_size
= PLT_BTI_PAC_SMALL_ENTRY_SIZE
;
4790 globals
->plt_entry
= elfNN_aarch64_small_plt_bti_pac_entry
;
4794 globals
->plt_entry_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
4795 globals
->plt_entry
= elfNN_aarch64_small_plt_pac_entry
;
4798 else if (plt_type
== PLT_BTI
)
4800 globals
->plt0_entry
= elfNN_aarch64_small_plt0_bti_entry
;
4802 /* Only in ET_EXEC we need PLTn with BTI. */
4803 if (bfd_link_pde (link_info
))
4805 globals
->plt_entry_size
= PLT_BTI_SMALL_ENTRY_SIZE
;
4806 globals
->plt_entry
= elfNN_aarch64_small_plt_bti_entry
;
4809 else if (plt_type
== PLT_PAC
)
4811 globals
->plt_entry_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
4812 globals
->plt_entry
= elfNN_aarch64_small_plt_pac_entry
;
4816 /* Set option values needed during linking. */
4818 bfd_elfNN_aarch64_set_options (struct bfd
*output_bfd
,
4819 struct bfd_link_info
*link_info
,
4821 int no_wchar_warn
, int pic_veneer
,
4822 int fix_erratum_835769
,
4823 erratum_84319_opts fix_erratum_843419
,
4824 int no_apply_dynamic_relocs
,
4825 aarch64_bti_pac_info bp_info
)
4827 struct elf_aarch64_link_hash_table
*globals
;
4829 globals
= elf_aarch64_hash_table (link_info
);
4830 globals
->pic_veneer
= pic_veneer
;
4831 globals
->fix_erratum_835769
= fix_erratum_835769
;
4832 /* If the default options are used, then ERRAT_ADR will be set by default
4833 which will enable the ADRP->ADR workaround for the erratum 843419
4835 globals
->fix_erratum_843419
= fix_erratum_843419
;
4836 globals
->no_apply_dynamic_relocs
= no_apply_dynamic_relocs
;
4838 BFD_ASSERT (is_aarch64_elf (output_bfd
));
4839 elf_aarch64_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
4840 elf_aarch64_tdata (output_bfd
)->no_wchar_size_warning
= no_wchar_warn
;
4842 switch (bp_info
.bti_type
)
4845 elf_aarch64_tdata (output_bfd
)->no_bti_warn
= 0;
4846 elf_aarch64_tdata (output_bfd
)->gnu_and_prop
4847 |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI
;
4853 elf_aarch64_tdata (output_bfd
)->plt_type
= bp_info
.plt_type
;
4854 setup_plt_values (link_info
, bp_info
.plt_type
);
4858 aarch64_calculate_got_entry_vma (struct elf_link_hash_entry
*h
,
4859 struct elf_aarch64_link_hash_table
4860 *globals
, struct bfd_link_info
*info
,
4861 bfd_vma value
, bfd
*output_bfd
,
4862 bfd_boolean
*unresolved_reloc_p
)
4864 bfd_vma off
= (bfd_vma
) - 1;
4865 asection
*basegot
= globals
->root
.sgot
;
4866 bfd_boolean dyn
= globals
->root
.dynamic_sections_created
;
4870 BFD_ASSERT (basegot
!= NULL
);
4871 off
= h
->got
.offset
;
4872 BFD_ASSERT (off
!= (bfd_vma
) - 1);
4873 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
4874 || (bfd_link_pic (info
)
4875 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4876 || (ELF_ST_VISIBILITY (h
->other
)
4877 && h
->root
.type
== bfd_link_hash_undefweak
))
4879 /* This is actually a static link, or it is a -Bsymbolic link
4880 and the symbol is defined locally. We must initialize this
4881 entry in the global offset table. Since the offset must
4882 always be a multiple of 8 (4 in the case of ILP32), we use
4883 the least significant bit to record whether we have
4884 initialized it already.
4885 When doing a dynamic link, we create a .rel(a).got relocation
4886 entry to initialize the value. This is done in the
4887 finish_dynamic_symbol routine. */
4892 bfd_put_NN (output_bfd
, value
, basegot
->contents
+ off
);
4897 *unresolved_reloc_p
= FALSE
;
4899 off
= off
+ basegot
->output_section
->vma
+ basegot
->output_offset
;
4905 /* Change R_TYPE to a more efficient access model where possible,
4906 return the new reloc type. */
4908 static bfd_reloc_code_real_type
4909 aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type
,
4910 struct elf_link_hash_entry
*h
)
4912 bfd_boolean is_local
= h
== NULL
;
4916 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
4917 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
4919 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4920 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
);
4922 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
4924 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4927 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
4929 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4930 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4932 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
4934 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4935 : BFD_RELOC_AARCH64_NONE
);
4937 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
4939 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4940 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
);
4942 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
4944 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4945 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
);
4947 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
4948 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
4950 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4951 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
);
4953 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
4954 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
: r_type
;
4956 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
4957 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
: r_type
;
4959 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
4962 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
4964 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4965 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4967 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
4968 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
4969 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
4970 /* Instructions with these relocations will become NOPs. */
4971 return BFD_RELOC_AARCH64_NONE
;
4973 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
4974 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
4975 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
4976 return is_local
? BFD_RELOC_AARCH64_NONE
: r_type
;
4979 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
4981 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4982 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
;
4984 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
4986 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4987 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
;
4998 aarch64_reloc_got_type (bfd_reloc_code_real_type r_type
)
5002 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5003 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5004 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5005 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5006 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5007 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5008 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5009 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5010 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5013 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
5014 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
5015 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
5016 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
5017 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
5018 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
5019 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
5020 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5023 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5024 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
5025 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
5026 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
5027 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5028 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
5029 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
5030 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
5031 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5032 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
5033 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
5034 return GOT_TLSDESC_GD
;
5036 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
5037 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
5038 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
5039 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
5040 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
5041 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
5051 aarch64_can_relax_tls (bfd
*input_bfd
,
5052 struct bfd_link_info
*info
,
5053 bfd_reloc_code_real_type r_type
,
5054 struct elf_link_hash_entry
*h
,
5055 unsigned long r_symndx
)
5057 unsigned int symbol_got_type
;
5058 unsigned int reloc_got_type
;
5060 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type
))
5063 symbol_got_type
= elfNN_aarch64_symbol_got_type (h
, input_bfd
, r_symndx
);
5064 reloc_got_type
= aarch64_reloc_got_type (r_type
);
5066 if (symbol_got_type
== GOT_TLS_IE
&& GOT_TLS_GD_ANY_P (reloc_got_type
))
5069 if (!bfd_link_executable (info
))
5072 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
5078 /* Given the relocation code R_TYPE, return the relaxed bfd reloc
5081 static bfd_reloc_code_real_type
5082 aarch64_tls_transition (bfd
*input_bfd
,
5083 struct bfd_link_info
*info
,
5084 unsigned int r_type
,
5085 struct elf_link_hash_entry
*h
,
5086 unsigned long r_symndx
)
5088 bfd_reloc_code_real_type bfd_r_type
5089 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
5091 if (! aarch64_can_relax_tls (input_bfd
, info
, bfd_r_type
, h
, r_symndx
))
5094 return aarch64_tls_transition_without_check (bfd_r_type
, h
);
5097 /* Return the base VMA address which should be subtracted from real addresses
5098 when resolving R_AARCH64_TLS_DTPREL relocation. */
5101 dtpoff_base (struct bfd_link_info
*info
)
5103 /* If tls_sec is NULL, we should have signalled an error already. */
5104 BFD_ASSERT (elf_hash_table (info
)->tls_sec
!= NULL
);
5105 return elf_hash_table (info
)->tls_sec
->vma
;
5108 /* Return the base VMA address which should be subtracted from real addresses
5109 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
5112 tpoff_base (struct bfd_link_info
*info
)
5114 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5116 /* If tls_sec is NULL, we should have signalled an error already. */
5117 BFD_ASSERT (htab
->tls_sec
!= NULL
);
5119 bfd_vma base
= align_power ((bfd_vma
) TCB_SIZE
,
5120 htab
->tls_sec
->alignment_power
);
5121 return htab
->tls_sec
->vma
- base
;
5125 symbol_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5126 unsigned long r_symndx
)
5128 /* Calculate the address of the GOT entry for symbol
5129 referred to in h. */
5131 return &h
->got
.offset
;
5135 struct elf_aarch64_local_symbol
*l
;
5137 l
= elf_aarch64_locals (input_bfd
);
5138 return &l
[r_symndx
].got_offset
;
5143 symbol_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5144 unsigned long r_symndx
)
5147 p
= symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5152 symbol_got_offset_mark_p (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5153 unsigned long r_symndx
)
5156 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5161 symbol_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5162 unsigned long r_symndx
)
5165 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5171 symbol_tlsdesc_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5172 unsigned long r_symndx
)
5174 /* Calculate the address of the GOT entry for symbol
5175 referred to in h. */
5178 struct elf_aarch64_link_hash_entry
*eh
;
5179 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
5180 return &eh
->tlsdesc_got_jump_table_offset
;
5185 struct elf_aarch64_local_symbol
*l
;
5187 l
= elf_aarch64_locals (input_bfd
);
5188 return &l
[r_symndx
].tlsdesc_got_jump_table_offset
;
5193 symbol_tlsdesc_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5194 unsigned long r_symndx
)
5197 p
= symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5202 symbol_tlsdesc_got_offset_mark_p (bfd
*input_bfd
,
5203 struct elf_link_hash_entry
*h
,
5204 unsigned long r_symndx
)
5207 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5212 symbol_tlsdesc_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5213 unsigned long r_symndx
)
5216 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5221 /* Data for make_branch_to_erratum_835769_stub(). */
5223 struct erratum_835769_branch_to_stub_data
5225 struct bfd_link_info
*info
;
5226 asection
*output_section
;
5230 /* Helper to insert branches to erratum 835769 stubs in the right
5231 places for a particular section. */
5234 make_branch_to_erratum_835769_stub (struct bfd_hash_entry
*gen_entry
,
5237 struct elf_aarch64_stub_hash_entry
*stub_entry
;
5238 struct erratum_835769_branch_to_stub_data
*data
;
5240 unsigned long branch_insn
= 0;
5241 bfd_vma veneered_insn_loc
, veneer_entry_loc
;
5242 bfd_signed_vma branch_offset
;
5243 unsigned int target
;
5246 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
5247 data
= (struct erratum_835769_branch_to_stub_data
*) in_arg
;
5249 if (stub_entry
->target_section
!= data
->output_section
5250 || stub_entry
->stub_type
!= aarch64_stub_erratum_835769_veneer
)
5253 contents
= data
->contents
;
5254 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
5255 + stub_entry
->target_section
->output_offset
5256 + stub_entry
->target_value
;
5257 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
5258 + stub_entry
->stub_sec
->output_offset
5259 + stub_entry
->stub_offset
;
5260 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
5262 abfd
= stub_entry
->target_section
->owner
;
5263 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
5265 (_("%pB: error: erratum 835769 stub out "
5266 "of range (input file too large)"), abfd
);
5268 target
= stub_entry
->target_value
;
5269 branch_insn
= 0x14000000;
5270 branch_offset
>>= 2;
5271 branch_offset
&= 0x3ffffff;
5272 branch_insn
|= branch_offset
;
5273 bfd_putl32 (branch_insn
, &contents
[target
]);
5280 _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry
*gen_entry
,
5283 struct elf_aarch64_stub_hash_entry
*stub_entry
5284 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
5285 struct erratum_835769_branch_to_stub_data
*data
5286 = (struct erratum_835769_branch_to_stub_data
*) in_arg
;
5287 struct bfd_link_info
*info
;
5288 struct elf_aarch64_link_hash_table
*htab
;
5296 contents
= data
->contents
;
5297 section
= data
->output_section
;
5299 htab
= elf_aarch64_hash_table (info
);
5301 if (stub_entry
->target_section
!= section
5302 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
)
5305 BFD_ASSERT (((htab
->fix_erratum_843419
& ERRAT_ADRP
) && stub_entry
->stub_sec
)
5306 || (htab
->fix_erratum_843419
& ERRAT_ADR
));
5308 /* Only update the stub section if we have one. We should always have one if
5309 we're allowed to use the ADRP errata workaround, otherwise it is not
5311 if (stub_entry
->stub_sec
)
5313 insn
= bfd_getl32 (contents
+ stub_entry
->target_value
);
5315 stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
);
5318 place
= (section
->output_section
->vma
+ section
->output_offset
5319 + stub_entry
->adrp_offset
);
5320 insn
= bfd_getl32 (contents
+ stub_entry
->adrp_offset
);
5322 if (!_bfd_aarch64_adrp_p (insn
))
5325 bfd_signed_vma imm
=
5326 (_bfd_aarch64_sign_extend
5327 ((bfd_vma
) _bfd_aarch64_decode_adrp_imm (insn
) << 12, 33)
5330 if ((htab
->fix_erratum_843419
& ERRAT_ADR
)
5331 && (imm
>= AARCH64_MIN_ADRP_IMM
&& imm
<= AARCH64_MAX_ADRP_IMM
))
5333 insn
= (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP
, imm
)
5334 | AARCH64_RT (insn
));
5335 bfd_putl32 (insn
, contents
+ stub_entry
->adrp_offset
);
5336 /* Stub is not needed, don't map it out. */
5337 stub_entry
->stub_type
= aarch64_stub_none
;
5339 else if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
5341 bfd_vma veneered_insn_loc
;
5342 bfd_vma veneer_entry_loc
;
5343 bfd_signed_vma branch_offset
;
5344 uint32_t branch_insn
;
5346 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
5347 + stub_entry
->target_section
->output_offset
5348 + stub_entry
->target_value
;
5349 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
5350 + stub_entry
->stub_sec
->output_offset
5351 + stub_entry
->stub_offset
;
5352 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
5354 abfd
= stub_entry
->target_section
->owner
;
5355 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
5357 (_("%pB: error: erratum 843419 stub out "
5358 "of range (input file too large)"), abfd
);
5360 branch_insn
= 0x14000000;
5361 branch_offset
>>= 2;
5362 branch_offset
&= 0x3ffffff;
5363 branch_insn
|= branch_offset
;
5364 bfd_putl32 (branch_insn
, contents
+ stub_entry
->target_value
);
5368 abfd
= stub_entry
->target_section
->owner
;
5370 (_("%pB: error: erratum 843419 immediate 0x%" BFD_VMA_FMT
"x "
5371 "out of range for ADR (input file too large) and "
5372 "--fix-cortex-a53-843419=adr used. Run the linker with "
5373 "--fix-cortex-a53-843419=full instead"), abfd
, imm
);
5374 bfd_set_error (bfd_error_bad_value
);
5375 /* This function is called inside a hashtable traversal and the error
5376 handlers called above turn into non-fatal errors. Which means this
5377 case ld returns an exit code 0 and also produces a broken object file.
5378 To prevent this, issue a hard abort. */
5386 elfNN_aarch64_write_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
5387 struct bfd_link_info
*link_info
,
5392 struct elf_aarch64_link_hash_table
*globals
=
5393 elf_aarch64_hash_table (link_info
);
5395 if (globals
== NULL
)
5398 /* Fix code to point to erratum 835769 stubs. */
5399 if (globals
->fix_erratum_835769
)
5401 struct erratum_835769_branch_to_stub_data data
;
5403 data
.info
= link_info
;
5404 data
.output_section
= sec
;
5405 data
.contents
= contents
;
5406 bfd_hash_traverse (&globals
->stub_hash_table
,
5407 make_branch_to_erratum_835769_stub
, &data
);
5410 if (globals
->fix_erratum_843419
)
5412 struct erratum_835769_branch_to_stub_data data
;
5414 data
.info
= link_info
;
5415 data
.output_section
= sec
;
5416 data
.contents
= contents
;
5417 bfd_hash_traverse (&globals
->stub_hash_table
,
5418 _bfd_aarch64_erratum_843419_branch_to_stub
, &data
);
5424 /* Return TRUE if RELOC is a relocation against the base of GOT table. */
5427 aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc
)
5429 return (reloc
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
5430 || reloc
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5431 || reloc
== BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
5432 || reloc
== BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
5433 || reloc
== BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
);
5436 /* Perform a relocation as part of a final link. The input relocation type
5437 should be TLS relaxed. */
5439 static bfd_reloc_status_type
5440 elfNN_aarch64_final_link_relocate (reloc_howto_type
*howto
,
5443 asection
*input_section
,
5445 Elf_Internal_Rela
*rel
,
5447 struct bfd_link_info
*info
,
5449 struct elf_link_hash_entry
*h
,
5450 bfd_boolean
*unresolved_reloc_p
,
5451 bfd_boolean save_addend
,
5452 bfd_vma
*saved_addend
,
5453 Elf_Internal_Sym
*sym
)
5455 Elf_Internal_Shdr
*symtab_hdr
;
5456 unsigned int r_type
= howto
->type
;
5457 bfd_reloc_code_real_type bfd_r_type
5458 = elfNN_aarch64_bfd_reloc_from_howto (howto
);
5459 unsigned long r_symndx
;
5460 bfd_byte
*hit_data
= contents
+ rel
->r_offset
;
5461 bfd_vma place
, off
, got_entry_addr
= 0;
5462 bfd_signed_vma signed_addend
;
5463 struct elf_aarch64_link_hash_table
*globals
;
5464 bfd_boolean weak_undef_p
;
5465 bfd_boolean relative_reloc
;
5467 bfd_vma orig_value
= value
;
5468 bfd_boolean resolved_to_zero
;
5469 bfd_boolean abs_symbol_p
;
5471 globals
= elf_aarch64_hash_table (info
);
5473 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
5475 BFD_ASSERT (is_aarch64_elf (input_bfd
));
5477 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
5479 place
= input_section
->output_section
->vma
5480 + input_section
->output_offset
+ rel
->r_offset
;
5482 /* Get addend, accumulating the addend for consecutive relocs
5483 which refer to the same offset. */
5484 signed_addend
= saved_addend
? *saved_addend
: 0;
5485 signed_addend
+= rel
->r_addend
;
5487 weak_undef_p
= (h
? h
->root
.type
== bfd_link_hash_undefweak
5488 : bfd_is_und_section (sym_sec
));
5489 abs_symbol_p
= h
!= NULL
&& bfd_is_abs_symbol (&h
->root
);
5492 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
5493 it here if it is defined in a non-shared object. */
5495 && h
->type
== STT_GNU_IFUNC
5502 if ((input_section
->flags
& SEC_ALLOC
) == 0)
5504 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
5505 STT_GNU_IFUNC symbol as STT_FUNC. */
5506 if (elf_section_type (input_section
) == SHT_NOTE
)
5509 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5510 sections because such sections are not SEC_ALLOC and
5511 thus ld.so will not process them. */
5512 if ((input_section
->flags
& SEC_DEBUGGING
) != 0)
5513 return bfd_reloc_ok
;
5515 if (h
->root
.root
.string
)
5516 name
= h
->root
.root
.string
;
5518 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, NULL
);
5520 /* xgettext:c-format */
5521 (_("%pB(%pA+%#" PRIx64
"): "
5522 "unresolvable %s relocation against symbol `%s'"),
5523 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
5525 bfd_set_error (bfd_error_bad_value
);
5526 return bfd_reloc_notsupported
;
5528 else if (h
->plt
.offset
== (bfd_vma
) -1)
5529 goto bad_ifunc_reloc
;
5531 /* STT_GNU_IFUNC symbol must go through PLT. */
5532 plt
= globals
->root
.splt
? globals
->root
.splt
: globals
->root
.iplt
;
5533 value
= (plt
->output_section
->vma
+ plt
->output_offset
+ h
->plt
.offset
);
5539 if (h
->root
.root
.string
)
5540 name
= h
->root
.root
.string
;
5542 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
5545 /* xgettext:c-format */
5546 (_("%pB: relocation %s against STT_GNU_IFUNC "
5547 "symbol `%s' isn't handled by %s"), input_bfd
,
5548 howto
->name
, name
, __FUNCTION__
);
5549 bfd_set_error (bfd_error_bad_value
);
5550 return bfd_reloc_notsupported
;
5552 case BFD_RELOC_AARCH64_NN
:
5553 if (rel
->r_addend
!= 0)
5555 if (h
->root
.root
.string
)
5556 name
= h
->root
.root
.string
;
5558 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
,
5561 /* xgettext:c-format */
5562 (_("%pB: relocation %s against STT_GNU_IFUNC "
5563 "symbol `%s' has non-zero addend: %" PRId64
),
5564 input_bfd
, howto
->name
, name
, (int64_t) rel
->r_addend
);
5565 bfd_set_error (bfd_error_bad_value
);
5566 return bfd_reloc_notsupported
;
5569 /* Generate dynamic relocation only when there is a
5570 non-GOT reference in a shared object. */
5571 if (bfd_link_pic (info
) && h
->non_got_ref
)
5573 Elf_Internal_Rela outrel
;
5576 /* Need a dynamic relocation to get the real function
5578 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
5582 if (outrel
.r_offset
== (bfd_vma
) -1
5583 || outrel
.r_offset
== (bfd_vma
) -2)
5586 outrel
.r_offset
+= (input_section
->output_section
->vma
5587 + input_section
->output_offset
);
5589 if (h
->dynindx
== -1
5591 || bfd_link_executable (info
))
5593 /* This symbol is resolved locally. */
5594 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
5595 outrel
.r_addend
= (h
->root
.u
.def
.value
5596 + h
->root
.u
.def
.section
->output_section
->vma
5597 + h
->root
.u
.def
.section
->output_offset
);
5601 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5602 outrel
.r_addend
= 0;
5605 sreloc
= globals
->root
.irelifunc
;
5606 elf_append_rela (output_bfd
, sreloc
, &outrel
);
5608 /* If this reloc is against an external symbol, we
5609 do not want to fiddle with the addend. Otherwise,
5610 we need to include the symbol value so that it
5611 becomes an addend for the dynamic reloc. For an
5612 internal symbol, we have updated addend. */
5613 return bfd_reloc_ok
;
5616 case BFD_RELOC_AARCH64_CALL26
:
5617 case BFD_RELOC_AARCH64_JUMP26
:
5618 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5622 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
5624 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5625 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5626 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5627 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5628 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5629 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5630 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5631 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5632 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5633 base_got
= globals
->root
.sgot
;
5634 off
= h
->got
.offset
;
5636 if (base_got
== NULL
)
5639 if (off
== (bfd_vma
) -1)
5643 /* We can't use h->got.offset here to save state, or
5644 even just remember the offset, as finish_dynamic_symbol
5645 would use that as offset into .got. */
5647 if (globals
->root
.splt
!= NULL
)
5649 plt_index
= ((h
->plt
.offset
- globals
->plt_header_size
) /
5650 globals
->plt_entry_size
);
5651 off
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
5652 base_got
= globals
->root
.sgotplt
;
5656 plt_index
= h
->plt
.offset
/ globals
->plt_entry_size
;
5657 off
= plt_index
* GOT_ENTRY_SIZE
;
5658 base_got
= globals
->root
.igotplt
;
5661 if (h
->dynindx
== -1
5665 /* This references the local definition. We must
5666 initialize this entry in the global offset table.
5667 Since the offset must always be a multiple of 8,
5668 we use the least significant bit to record
5669 whether we have initialized it already.
5671 When doing a dynamic link, we create a .rela.got
5672 relocation entry to initialize the value. This
5673 is done in the finish_dynamic_symbol routine. */
5678 bfd_put_NN (output_bfd
, value
,
5679 base_got
->contents
+ off
);
5680 /* Note that this is harmless as -1 | 1 still is -1. */
5684 value
= (base_got
->output_section
->vma
5685 + base_got
->output_offset
+ off
);
5688 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
,
5690 unresolved_reloc_p
);
5692 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
5693 addend
= (globals
->root
.sgot
->output_section
->vma
5694 + globals
->root
.sgot
->output_offset
);
5696 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5698 addend
, weak_undef_p
);
5699 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
, howto
, value
);
5700 case BFD_RELOC_AARCH64_ADD_LO12
:
5701 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5707 resolved_to_zero
= (h
!= NULL
5708 && UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
5712 case BFD_RELOC_AARCH64_NONE
:
5713 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5714 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5715 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5716 *unresolved_reloc_p
= FALSE
;
5717 return bfd_reloc_ok
;
5719 case BFD_RELOC_AARCH64_NN
:
5721 /* When generating a shared object or relocatable executable, these
5722 relocations are copied into the output file to be resolved at
5724 if (((bfd_link_pic (info
)
5725 || globals
->root
.is_relocatable_executable
)
5726 && (input_section
->flags
& SEC_ALLOC
)
5728 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5729 && !resolved_to_zero
)
5730 || h
->root
.type
!= bfd_link_hash_undefweak
))
5731 /* Or we are creating an executable, we may need to keep relocations
5732 for symbols satisfied by a dynamic library if we manage to avoid
5733 copy relocs for the symbol. */
5734 || (ELIMINATE_COPY_RELOCS
5735 && !bfd_link_pic (info
)
5737 && (input_section
->flags
& SEC_ALLOC
)
5742 || h
->root
.type
== bfd_link_hash_undefweak
5743 || h
->root
.type
== bfd_link_hash_undefined
)))
5745 Elf_Internal_Rela outrel
;
5747 bfd_boolean skip
, relocate
;
5750 *unresolved_reloc_p
= FALSE
;
5755 outrel
.r_addend
= signed_addend
;
5757 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
5759 if (outrel
.r_offset
== (bfd_vma
) - 1)
5761 else if (outrel
.r_offset
== (bfd_vma
) - 2)
5766 else if (abs_symbol_p
)
5768 /* Local absolute symbol. */
5769 skip
= (h
->forced_local
|| (h
->dynindx
== -1));
5773 outrel
.r_offset
+= (input_section
->output_section
->vma
5774 + input_section
->output_offset
);
5777 memset (&outrel
, 0, sizeof outrel
);
5780 && (!bfd_link_pic (info
)
5781 || !(bfd_link_pie (info
) || SYMBOLIC_BIND (info
, h
))
5782 || !h
->def_regular
))
5783 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5788 /* On SVR4-ish systems, the dynamic loader cannot
5789 relocate the text and data segments independently,
5790 so the symbol does not matter. */
5792 relocate
= globals
->no_apply_dynamic_relocs
? FALSE
: TRUE
;
5793 outrel
.r_info
= ELFNN_R_INFO (symbol
, AARCH64_R (RELATIVE
));
5794 outrel
.r_addend
+= value
;
5797 sreloc
= elf_section_data (input_section
)->sreloc
;
5798 if (sreloc
== NULL
|| sreloc
->contents
== NULL
)
5799 return bfd_reloc_notsupported
;
5801 loc
= sreloc
->contents
+ sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
5802 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
5804 if (sreloc
->reloc_count
* RELOC_SIZE (globals
) > sreloc
->size
)
5806 /* Sanity to check that we have previously allocated
5807 sufficient space in the relocation section for the
5808 number of relocations we actually want to emit. */
5812 /* If this reloc is against an external symbol, we do not want to
5813 fiddle with the addend. Otherwise, we need to include the symbol
5814 value so that it becomes an addend for the dynamic reloc. */
5816 return bfd_reloc_ok
;
5818 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5819 contents
, rel
->r_offset
, value
,
5823 value
+= signed_addend
;
5826 case BFD_RELOC_AARCH64_CALL26
:
5827 case BFD_RELOC_AARCH64_JUMP26
:
5829 asection
*splt
= globals
->root
.splt
;
5830 bfd_boolean via_plt_p
=
5831 splt
!= NULL
&& h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) - 1;
5833 /* A call to an undefined weak symbol is converted to a jump to
5834 the next instruction unless a PLT entry will be created.
5835 The jump to the next instruction is optimized as a NOP.
5836 Do the same for local undefined symbols. */
5837 if (weak_undef_p
&& ! via_plt_p
)
5839 bfd_putl32 (INSN_NOP
, hit_data
);
5840 return bfd_reloc_ok
;
5843 /* If the call goes through a PLT entry, make sure to
5844 check distance to the right destination address. */
5846 value
= (splt
->output_section
->vma
5847 + splt
->output_offset
+ h
->plt
.offset
);
5849 /* Check if a stub has to be inserted because the destination
5851 struct elf_aarch64_stub_hash_entry
*stub_entry
= NULL
;
5853 /* If the branch destination is directed to plt stub, "value" will be
5854 the final destination, otherwise we should plus signed_addend, it may
5855 contain non-zero value, for example call to local function symbol
5856 which are turned into "sec_sym + sec_off", and sec_off is kept in
5858 if (! aarch64_valid_branch_p (via_plt_p
? value
: value
+ signed_addend
,
5860 /* The target is out of reach, so redirect the branch to
5861 the local stub for this function. */
5862 stub_entry
= elfNN_aarch64_get_stub_entry (input_section
, sym_sec
, h
,
5864 if (stub_entry
!= NULL
)
5866 value
= (stub_entry
->stub_offset
5867 + stub_entry
->stub_sec
->output_offset
5868 + stub_entry
->stub_sec
->output_section
->vma
);
5870 /* We have redirected the destination to stub entry address,
5871 so ignore any addend record in the original rela entry. */
5875 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5877 signed_addend
, weak_undef_p
);
5878 *unresolved_reloc_p
= FALSE
;
5881 case BFD_RELOC_AARCH64_16_PCREL
:
5882 case BFD_RELOC_AARCH64_32_PCREL
:
5883 case BFD_RELOC_AARCH64_64_PCREL
:
5884 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
5885 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5886 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
5887 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
5888 case BFD_RELOC_AARCH64_MOVW_PREL_G0
:
5889 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC
:
5890 case BFD_RELOC_AARCH64_MOVW_PREL_G1
:
5891 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC
:
5892 case BFD_RELOC_AARCH64_MOVW_PREL_G2
:
5893 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC
:
5894 case BFD_RELOC_AARCH64_MOVW_PREL_G3
:
5895 if (bfd_link_pic (info
)
5896 && (input_section
->flags
& SEC_ALLOC
) != 0
5897 && (input_section
->flags
& SEC_READONLY
) != 0
5898 && !SYMBOL_REFERENCES_LOCAL (info
, h
))
5900 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5903 /* xgettext:c-format */
5904 (_("%pB: relocation %s against symbol `%s' which may bind "
5905 "externally can not be used when making a shared object; "
5906 "recompile with -fPIC"),
5907 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
5908 h
->root
.root
.string
);
5909 bfd_set_error (bfd_error_bad_value
);
5910 return bfd_reloc_notsupported
;
5914 case BFD_RELOC_AARCH64_16
:
5916 case BFD_RELOC_AARCH64_32
:
5918 case BFD_RELOC_AARCH64_ADD_LO12
:
5919 case BFD_RELOC_AARCH64_BRANCH19
:
5920 case BFD_RELOC_AARCH64_LDST128_LO12
:
5921 case BFD_RELOC_AARCH64_LDST16_LO12
:
5922 case BFD_RELOC_AARCH64_LDST32_LO12
:
5923 case BFD_RELOC_AARCH64_LDST64_LO12
:
5924 case BFD_RELOC_AARCH64_LDST8_LO12
:
5925 case BFD_RELOC_AARCH64_MOVW_G0
:
5926 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
5927 case BFD_RELOC_AARCH64_MOVW_G0_S
:
5928 case BFD_RELOC_AARCH64_MOVW_G1
:
5929 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
5930 case BFD_RELOC_AARCH64_MOVW_G1_S
:
5931 case BFD_RELOC_AARCH64_MOVW_G2
:
5932 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
5933 case BFD_RELOC_AARCH64_MOVW_G2_S
:
5934 case BFD_RELOC_AARCH64_MOVW_G3
:
5935 case BFD_RELOC_AARCH64_TSTBR14
:
5936 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5938 signed_addend
, weak_undef_p
);
5941 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5942 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5943 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5944 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5945 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5946 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5947 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5948 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5949 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5950 if (globals
->root
.sgot
== NULL
)
5951 BFD_ASSERT (h
!= NULL
);
5953 relative_reloc
= FALSE
;
5958 /* If a symbol is not dynamic and is not undefined weak, bind it
5959 locally and generate a RELATIVE relocation under PIC mode.
5961 NOTE: one symbol may be referenced by several relocations, we
5962 should only generate one RELATIVE relocation for that symbol.
5963 Therefore, check GOT offset mark first. */
5964 if (h
->dynindx
== -1
5966 && h
->root
.type
!= bfd_link_hash_undefweak
5967 && bfd_link_pic (info
)
5968 && !symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
5969 relative_reloc
= TRUE
;
5971 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
, value
,
5973 unresolved_reloc_p
);
5974 /* Record the GOT entry address which will be used when generating
5975 RELATIVE relocation. */
5977 got_entry_addr
= value
;
5979 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
5980 addend
= (globals
->root
.sgot
->output_section
->vma
5981 + globals
->root
.sgot
->output_offset
);
5982 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5984 addend
, weak_undef_p
);
5989 struct elf_aarch64_local_symbol
*locals
5990 = elf_aarch64_locals (input_bfd
);
5994 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5996 /* xgettext:c-format */
5997 (_("%pB: local symbol descriptor table be NULL when applying "
5998 "relocation %s against local symbol"),
5999 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
6003 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6004 base_got
= globals
->root
.sgot
;
6005 got_entry_addr
= (base_got
->output_section
->vma
6006 + base_got
->output_offset
+ off
);
6008 if (!symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6010 bfd_put_64 (output_bfd
, value
, base_got
->contents
+ off
);
6012 /* For local symbol, we have done absolute relocation in static
6013 linking stage. While for shared library, we need to update the
6014 content of GOT entry according to the shared object's runtime
6015 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
6016 for dynamic linker. */
6017 if (bfd_link_pic (info
))
6018 relative_reloc
= TRUE
;
6020 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6023 /* Update the relocation value to GOT entry addr as we have transformed
6024 the direct data access into indirect data access through GOT. */
6025 value
= got_entry_addr
;
6027 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
6028 addend
= base_got
->output_section
->vma
+ base_got
->output_offset
;
6030 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6032 addend
, weak_undef_p
);
6038 Elf_Internal_Rela outrel
;
6040 s
= globals
->root
.srelgot
;
6044 outrel
.r_offset
= got_entry_addr
;
6045 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
6046 outrel
.r_addend
= orig_value
;
6047 elf_append_rela (output_bfd
, s
, &outrel
);
6051 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6052 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6053 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6054 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6055 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
6056 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
6057 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6058 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6059 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6060 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6061 if (globals
->root
.sgot
== NULL
)
6062 return bfd_reloc_notsupported
;
6064 value
= (symbol_got_offset (input_bfd
, h
, r_symndx
)
6065 + globals
->root
.sgot
->output_section
->vma
6066 + globals
->root
.sgot
->output_offset
);
6068 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6071 *unresolved_reloc_p
= FALSE
;
6074 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6075 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6076 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6077 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6078 if (globals
->root
.sgot
== NULL
)
6079 return bfd_reloc_notsupported
;
6081 value
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6082 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6085 *unresolved_reloc_p
= FALSE
;
6088 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12
:
6089 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12
:
6090 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC
:
6091 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12
:
6092 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC
:
6093 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12
:
6094 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC
:
6095 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12
:
6096 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC
:
6097 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12
:
6098 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC
:
6099 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0
:
6100 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC
:
6101 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1
:
6102 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC
:
6103 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2
:
6105 if (!(weak_undef_p
|| elf_hash_table (info
)->tls_sec
))
6107 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6109 /* xgettext:c-format */
6110 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6111 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
6112 h
->root
.root
.string
);
6113 bfd_set_error (bfd_error_bad_value
);
6114 return bfd_reloc_notsupported
;
6118 = weak_undef_p
? 0 : signed_addend
- dtpoff_base (info
);
6119 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6121 def_value
, weak_undef_p
);
6125 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
:
6126 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12
:
6127 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC
:
6128 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12
:
6129 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC
:
6130 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12
:
6131 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC
:
6132 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12
:
6133 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC
:
6134 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12
:
6135 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC
:
6136 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0
:
6137 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
:
6138 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
:
6139 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
:
6140 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
:
6142 if (!(weak_undef_p
|| elf_hash_table (info
)->tls_sec
))
6144 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6146 /* xgettext:c-format */
6147 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6148 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
6149 h
->root
.root
.string
);
6150 bfd_set_error (bfd_error_bad_value
);
6151 return bfd_reloc_notsupported
;
6155 = weak_undef_p
? 0 : signed_addend
- tpoff_base (info
);
6156 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6158 def_value
, weak_undef_p
);
6159 *unresolved_reloc_p
= FALSE
;
6163 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
6164 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6165 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6166 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
6167 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
6168 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6169 if (globals
->root
.sgot
== NULL
)
6170 return bfd_reloc_notsupported
;
6171 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
6172 + globals
->root
.sgotplt
->output_section
->vma
6173 + globals
->root
.sgotplt
->output_offset
6174 + globals
->sgotplt_jump_table_size
);
6176 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6179 *unresolved_reloc_p
= FALSE
;
6182 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6183 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6184 if (globals
->root
.sgot
== NULL
)
6185 return bfd_reloc_notsupported
;
6187 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
6188 + globals
->root
.sgotplt
->output_section
->vma
6189 + globals
->root
.sgotplt
->output_offset
6190 + globals
->sgotplt_jump_table_size
);
6192 value
-= (globals
->root
.sgot
->output_section
->vma
6193 + globals
->root
.sgot
->output_offset
);
6195 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6198 *unresolved_reloc_p
= FALSE
;
6202 return bfd_reloc_notsupported
;
6206 *saved_addend
= value
;
6208 /* Only apply the final relocation in a sequence. */
6210 return bfd_reloc_continue
;
6212 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
6216 /* LP64 and ILP32 operates on x- and w-registers respectively.
6217 Next definitions take into account the difference between
6218 corresponding machine codes. R means x-register if the target
6219 arch is LP64, and w-register if the target is ILP32. */
6222 # define add_R0_R0 (0x91000000)
6223 # define add_R0_R0_R1 (0x8b000020)
6224 # define add_R0_R1 (0x91400020)
6225 # define ldr_R0 (0x58000000)
6226 # define ldr_R0_mask(i) (i & 0xffffffe0)
6227 # define ldr_R0_x0 (0xf9400000)
6228 # define ldr_hw_R0 (0xf2a00000)
6229 # define movk_R0 (0xf2800000)
6230 # define movz_R0 (0xd2a00000)
6231 # define movz_hw_R0 (0xd2c00000)
6232 #else /*ARCH_SIZE == 32 */
6233 # define add_R0_R0 (0x11000000)
6234 # define add_R0_R0_R1 (0x0b000020)
6235 # define add_R0_R1 (0x11400020)
6236 # define ldr_R0 (0x18000000)
6237 # define ldr_R0_mask(i) (i & 0xbfffffe0)
6238 # define ldr_R0_x0 (0xb9400000)
6239 # define ldr_hw_R0 (0x72a00000)
6240 # define movk_R0 (0x72800000)
6241 # define movz_R0 (0x52a00000)
6242 # define movz_hw_R0 (0x52c00000)
6245 /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub,
6246 it is used to identify the stub information to reset. */
6248 struct erratum_843419_branch_to_stub_clear_data
6250 bfd_vma adrp_offset
;
6251 asection
*output_section
;
6254 /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and
6255 section inside IN_ARG matches. The clearing is done by setting the
6256 stub_type to none. */
6259 _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry
*gen_entry
,
6262 struct elf_aarch64_stub_hash_entry
*stub_entry
6263 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
6264 struct erratum_843419_branch_to_stub_clear_data
*data
6265 = (struct erratum_843419_branch_to_stub_clear_data
*) in_arg
;
6267 if (stub_entry
->target_section
!= data
->output_section
6268 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
6269 || stub_entry
->adrp_offset
!= data
->adrp_offset
)
6272 /* Change the stub type instead of removing the entry, removing from the hash
6273 table would be slower and we have already reserved the memory for the entry
6274 so there wouldn't be much gain. Changing the stub also keeps around a
6275 record of what was there before. */
6276 stub_entry
->stub_type
= aarch64_stub_none
;
6278 /* We're done and there could have been only one matching stub at that
6279 particular offset, so abort further traversal. */
6283 /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419
6284 sequence. In this case the erratum no longer applies and we need to remove
6285 the entry from the pending stub generation. This clears matching adrp insn
6286 at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */
6289 clear_erratum_843419_entry (struct elf_aarch64_link_hash_table
*globals
,
6290 bfd_vma adrp_offset
, asection
*input_section
)
6292 if (globals
->fix_erratum_843419
& ERRAT_ADRP
)
6294 struct erratum_843419_branch_to_stub_clear_data data
;
6295 data
.adrp_offset
= adrp_offset
;
6296 data
.output_section
= input_section
;
6298 bfd_hash_traverse (&globals
->stub_hash_table
,
6299 _bfd_aarch64_erratum_843419_clear_stub
, &data
);
6303 /* Handle TLS relaxations. Relaxing is possible for symbols that use
6304 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
6307 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
6308 is to then call final_link_relocate. Return other values in the
6311 static bfd_reloc_status_type
6312 elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table
*globals
,
6313 bfd
*input_bfd
, asection
*input_section
,
6314 bfd_byte
*contents
, Elf_Internal_Rela
*rel
,
6315 struct elf_link_hash_entry
*h
)
6317 bfd_boolean is_local
= h
== NULL
;
6318 unsigned int r_type
= ELFNN_R_TYPE (rel
->r_info
);
6321 BFD_ASSERT (globals
&& input_bfd
&& contents
&& rel
);
6323 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
))
6325 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6326 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6329 /* GD->LE relaxation:
6330 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
6332 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
6334 Where R is x for LP64, and w for ILP32. */
6335 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
6336 /* We have relaxed the adrp into a mov, we may have to clear any
6337 pending erratum fixes. */
6338 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
6339 return bfd_reloc_continue
;
6343 /* GD->IE relaxation:
6344 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
6346 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
6348 return bfd_reloc_continue
;
6351 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6355 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6358 /* Tiny TLSDESC->LE relaxation:
6359 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
6360 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
6364 Where R is x for LP64, and w for ILP32. */
6365 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
6366 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
6368 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6369 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
6370 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6372 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
6373 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
+ 4);
6374 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
6375 return bfd_reloc_continue
;
6379 /* Tiny TLSDESC->IE relaxation:
6380 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
6381 adr x0, :tlsdesc:var => nop
6385 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
6386 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
6388 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6389 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6391 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
);
6392 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
6393 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
6394 return bfd_reloc_continue
;
6397 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6400 /* Tiny GD->LE relaxation:
6401 adr x0, :tlsgd:var => mrs x1, tpidr_el0
6402 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
6403 nop => add R0, R0, #:tprel_lo12_nc:x
6405 Where R is x for LP64, and x for Ilp32. */
6407 /* First kill the tls_get_addr reloc on the bl instruction. */
6408 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6410 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 0);
6411 bfd_putl32 (add_R0_R1
, contents
+ rel
->r_offset
+ 4);
6412 bfd_putl32 (add_R0_R0
, contents
+ rel
->r_offset
+ 8);
6414 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6415 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
));
6416 rel
[1].r_offset
= rel
->r_offset
+ 8;
6418 /* Move the current relocation to the second instruction in
6421 rel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6422 AARCH64_R (TLSLE_ADD_TPREL_HI12
));
6423 return bfd_reloc_continue
;
6427 /* Tiny GD->IE relaxation:
6428 adr x0, :tlsgd:var => ldr R0, :gottprel:var
6429 bl __tls_get_addr => mrs x1, tpidr_el0
6430 nop => add R0, R0, R1
6432 Where R is x for LP64, and w 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
);
6436 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6438 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
);
6439 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
6440 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 8);
6441 return bfd_reloc_continue
;
6445 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6446 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSGD_MOVW_G0_NC
));
6447 BFD_ASSERT (rel
->r_offset
+ 12 == rel
[2].r_offset
);
6448 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (CALL26
));
6452 /* Large GD->LE relaxation:
6453 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
6454 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
6455 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
6456 bl __tls_get_addr => mrs x1, tpidr_el0
6457 nop => add x0, x0, x1
6459 rel
[2].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6460 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
6461 rel
[2].r_offset
= rel
->r_offset
+ 8;
6463 bfd_putl32 (movz_hw_R0
, contents
+ rel
->r_offset
+ 0);
6464 bfd_putl32 (ldr_hw_R0
, contents
+ rel
->r_offset
+ 4);
6465 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
+ 8);
6466 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
6467 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 16);
6471 /* Large GD->IE relaxation:
6472 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
6473 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
6474 add x0, gp, x0 => ldr x0, [gp, x0]
6475 bl __tls_get_addr => mrs x1, tpidr_el0
6476 nop => add x0, x0, x1
6478 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6479 bfd_putl32 (0xd2a80000, contents
+ rel
->r_offset
+ 0);
6480 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
+ 8);
6481 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
6482 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 16);
6484 return bfd_reloc_continue
;
6486 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6487 return bfd_reloc_continue
;
6490 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6491 return bfd_reloc_continue
;
6493 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
6496 /* GD->LE relaxation:
6497 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
6499 Where R is x for lp64 mode, and w for ILP32 mode. */
6500 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6501 return bfd_reloc_continue
;
6505 /* GD->IE relaxation:
6506 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
6508 Where R is x for lp64 mode, and w for ILP32 mode. */
6509 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6510 bfd_putl32 (ldr_R0_mask (insn
), contents
+ rel
->r_offset
);
6511 return bfd_reloc_continue
;
6514 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6517 /* GD->LE relaxation
6518 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
6519 bl __tls_get_addr => mrs x1, tpidr_el0
6520 nop => add R0, R1, R0
6522 Where R is x for lp64 mode, and w for ILP32 mode. */
6524 /* First kill the tls_get_addr reloc on the bl instruction. */
6525 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6526 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6528 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6529 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
6530 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 8);
6531 return bfd_reloc_continue
;
6535 /* GD->IE relaxation
6536 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6537 BL __tls_get_addr => mrs x1, tpidr_el0
6539 NOP => add R0, R1, R0
6541 Where R is x for lp64 mode, and w for ilp32 mode. */
6543 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6545 /* Remove the relocation on the BL instruction. */
6546 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6548 /* We choose to fixup the BL and NOP instructions using the
6549 offset from the second relocation to allow flexibility in
6550 scheduling instructions between the ADD and BL. */
6551 bfd_putl32 (ldr_R0_x0
, contents
+ rel
->r_offset
);
6552 bfd_putl32 (0xd53bd041, contents
+ rel
[1].r_offset
);
6553 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
[1].r_offset
+ 4);
6554 return bfd_reloc_continue
;
6557 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
6558 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
6559 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
6560 /* GD->IE/LE relaxation:
6561 add x0, x0, #:tlsdesc_lo12:var => nop
6564 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
);
6565 return bfd_reloc_ok
;
6567 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
6570 /* GD->LE relaxation:
6571 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6573 Where R is x for lp64 mode, and w for ILP32 mode. */
6574 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6575 return bfd_reloc_continue
;
6579 /* GD->IE relaxation:
6580 ldr xd, [gp, xn] => ldr R0, [gp, xn]
6582 Where R is x for lp64 mode, and w for ILP32 mode. */
6583 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6584 bfd_putl32 (ldr_R0_mask (insn
), contents
+ rel
->r_offset
);
6585 return bfd_reloc_ok
;
6588 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6589 /* GD->LE relaxation:
6590 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
6592 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6594 Where R is x for lp64 mode, and w for ILP32 mode. */
6596 bfd_putl32 (ldr_hw_R0
, contents
+ rel
->r_offset
);
6597 return bfd_reloc_continue
;
6599 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6602 /* GD->LE relaxation:
6603 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6605 Where R is x for lp64 mode, and w for ILP32 mode. */
6606 bfd_putl32 (movz_hw_R0
, contents
+ rel
->r_offset
);
6607 return bfd_reloc_continue
;
6611 /* GD->IE relaxation:
6612 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6614 Where R is x for lp64 mode, and w for ILP32 mode. */
6615 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6616 bfd_putl32 (movz_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6617 return bfd_reloc_continue
;
6620 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6621 /* IE->LE relaxation:
6622 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
6624 Where R is x for lp64 mode, and w for ILP32 mode. */
6627 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6628 bfd_putl32 (movz_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6629 /* We have relaxed the adrp into a mov, we may have to clear any
6630 pending erratum fixes. */
6631 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
6633 return bfd_reloc_continue
;
6635 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
6636 /* IE->LE relaxation:
6637 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
6639 Where R is x for lp64 mode, and w for ILP32 mode. */
6642 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6643 bfd_putl32 (movk_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6645 return bfd_reloc_continue
;
6647 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6648 /* LD->LE relaxation (tiny):
6649 adr x0, :tlsldm:x => mrs x0, tpidr_el0
6650 bl __tls_get_addr => add R0, R0, TCB_SIZE
6652 Where R is x for lp64 mode, and w for ilp32 mode. */
6655 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6656 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6657 /* No need of CALL26 relocation for tls_get_addr. */
6658 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6659 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
+ 0);
6660 bfd_putl32 (add_R0_R0
| (TCB_SIZE
<< 10),
6661 contents
+ rel
->r_offset
+ 4);
6662 return bfd_reloc_ok
;
6664 return bfd_reloc_continue
;
6666 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6667 /* LD->LE relaxation (small):
6668 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6672 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
);
6673 return bfd_reloc_ok
;
6675 return bfd_reloc_continue
;
6677 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6678 /* LD->LE relaxation (small):
6679 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
6680 bl __tls_get_addr => nop
6682 Where R is x for lp64 mode, and w for ilp32 mode. */
6685 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6686 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6687 /* No need of CALL26 relocation for tls_get_addr. */
6688 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6689 bfd_putl32 (add_R0_R0
| (TCB_SIZE
<< 10),
6690 contents
+ rel
->r_offset
+ 0);
6691 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
6692 return bfd_reloc_ok
;
6694 return bfd_reloc_continue
;
6697 return bfd_reloc_continue
;
6700 return bfd_reloc_ok
;
6703 /* Relocate an AArch64 ELF section. */
6706 elfNN_aarch64_relocate_section (bfd
*output_bfd
,
6707 struct bfd_link_info
*info
,
6709 asection
*input_section
,
6711 Elf_Internal_Rela
*relocs
,
6712 Elf_Internal_Sym
*local_syms
,
6713 asection
**local_sections
)
6715 Elf_Internal_Shdr
*symtab_hdr
;
6716 struct elf_link_hash_entry
**sym_hashes
;
6717 Elf_Internal_Rela
*rel
;
6718 Elf_Internal_Rela
*relend
;
6720 struct elf_aarch64_link_hash_table
*globals
;
6721 bfd_boolean save_addend
= FALSE
;
6724 globals
= elf_aarch64_hash_table (info
);
6726 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
6727 sym_hashes
= elf_sym_hashes (input_bfd
);
6730 relend
= relocs
+ input_section
->reloc_count
;
6731 for (; rel
< relend
; rel
++)
6733 unsigned int r_type
;
6734 bfd_reloc_code_real_type bfd_r_type
;
6735 bfd_reloc_code_real_type relaxed_bfd_r_type
;
6736 reloc_howto_type
*howto
;
6737 unsigned long r_symndx
;
6738 Elf_Internal_Sym
*sym
;
6740 struct elf_link_hash_entry
*h
;
6742 bfd_reloc_status_type r
;
6745 bfd_boolean unresolved_reloc
= FALSE
;
6746 char *error_message
= NULL
;
6748 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
6749 r_type
= ELFNN_R_TYPE (rel
->r_info
);
6751 bfd_reloc
.howto
= elfNN_aarch64_howto_from_type (input_bfd
, r_type
);
6752 howto
= bfd_reloc
.howto
;
6755 return _bfd_unrecognized_reloc (input_bfd
, input_section
, r_type
);
6757 bfd_r_type
= elfNN_aarch64_bfd_reloc_from_howto (howto
);
6763 if (r_symndx
< symtab_hdr
->sh_info
)
6765 sym
= local_syms
+ r_symndx
;
6766 sym_type
= ELFNN_ST_TYPE (sym
->st_info
);
6767 sec
= local_sections
[r_symndx
];
6769 /* An object file might have a reference to a local
6770 undefined symbol. This is a daft object file, but we
6771 should at least do something about it. */
6772 if (r_type
!= R_AARCH64_NONE
&& r_type
!= R_AARCH64_NULL
6773 && bfd_is_und_section (sec
)
6774 && ELF_ST_BIND (sym
->st_info
) != STB_WEAK
)
6775 (*info
->callbacks
->undefined_symbol
)
6776 (info
, bfd_elf_string_from_elf_section
6777 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
),
6778 input_bfd
, input_section
, rel
->r_offset
, TRUE
);
6780 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6782 /* Relocate against local STT_GNU_IFUNC symbol. */
6783 if (!bfd_link_relocatable (info
)
6784 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
6786 h
= elfNN_aarch64_get_local_sym_hash (globals
, input_bfd
,
6791 /* Set STT_GNU_IFUNC symbol value. */
6792 h
->root
.u
.def
.value
= sym
->st_value
;
6793 h
->root
.u
.def
.section
= sec
;
6798 bfd_boolean warned
, ignored
;
6800 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6801 r_symndx
, symtab_hdr
, sym_hashes
,
6803 unresolved_reloc
, warned
, ignored
);
6808 if (sec
!= NULL
&& discarded_section (sec
))
6809 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
6810 rel
, 1, relend
, howto
, 0, contents
);
6812 if (bfd_link_relocatable (info
))
6816 name
= h
->root
.root
.string
;
6819 name
= (bfd_elf_string_from_elf_section
6820 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
6821 if (name
== NULL
|| *name
== '\0')
6822 name
= bfd_section_name (sec
);
6826 && r_type
!= R_AARCH64_NONE
6827 && r_type
!= R_AARCH64_NULL
6829 || h
->root
.type
== bfd_link_hash_defined
6830 || h
->root
.type
== bfd_link_hash_defweak
)
6831 && IS_AARCH64_TLS_RELOC (bfd_r_type
) != (sym_type
== STT_TLS
))
6834 ((sym_type
== STT_TLS
6835 /* xgettext:c-format */
6836 ? _("%pB(%pA+%#" PRIx64
"): %s used with TLS symbol %s")
6837 /* xgettext:c-format */
6838 : _("%pB(%pA+%#" PRIx64
"): %s used with non-TLS symbol %s")),
6840 input_section
, (uint64_t) rel
->r_offset
, howto
->name
, name
);
6843 /* We relax only if we can see that there can be a valid transition
6844 from a reloc type to another.
6845 We call elfNN_aarch64_final_link_relocate unless we're completely
6846 done, i.e., the relaxation produced the final output we want. */
6848 relaxed_bfd_r_type
= aarch64_tls_transition (input_bfd
, info
, r_type
,
6850 if (relaxed_bfd_r_type
!= bfd_r_type
)
6852 bfd_r_type
= relaxed_bfd_r_type
;
6853 howto
= elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type
);
6854 BFD_ASSERT (howto
!= NULL
);
6855 r_type
= howto
->type
;
6856 r
= elfNN_aarch64_tls_relax (globals
, input_bfd
, input_section
,
6858 unresolved_reloc
= 0;
6861 r
= bfd_reloc_continue
;
6863 /* There may be multiple consecutive relocations for the
6864 same offset. In that case we are supposed to treat the
6865 output of each relocation as the addend for the next. */
6866 if (rel
+ 1 < relend
6867 && rel
->r_offset
== rel
[1].r_offset
6868 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NONE
6869 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NULL
)
6872 save_addend
= FALSE
;
6874 if (r
== bfd_reloc_continue
)
6875 r
= elfNN_aarch64_final_link_relocate (howto
, input_bfd
, output_bfd
,
6876 input_section
, contents
, rel
,
6877 relocation
, info
, sec
,
6878 h
, &unresolved_reloc
,
6879 save_addend
, &addend
, sym
);
6881 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
))
6883 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6884 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6885 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6886 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6887 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6888 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6889 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6890 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6891 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6893 bfd_boolean need_relocs
= FALSE
;
6898 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6899 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6902 (!bfd_link_executable (info
) || indx
!= 0) &&
6904 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6905 || h
->root
.type
!= bfd_link_hash_undefweak
);
6907 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6911 Elf_Internal_Rela rela
;
6912 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPMOD
));
6914 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
6915 globals
->root
.sgot
->output_offset
+ off
;
6918 loc
= globals
->root
.srelgot
->contents
;
6919 loc
+= globals
->root
.srelgot
->reloc_count
++
6920 * RELOC_SIZE (htab
);
6921 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6923 bfd_reloc_code_real_type real_type
=
6924 elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
6926 if (real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
6927 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6928 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
)
6930 /* For local dynamic, don't generate DTPREL in any case.
6931 Initialize the DTPREL slot into zero, so we get module
6932 base address when invoke runtime TLS resolver. */
6933 bfd_put_NN (output_bfd
, 0,
6934 globals
->root
.sgot
->contents
+ off
6939 bfd_put_NN (output_bfd
,
6940 relocation
- dtpoff_base (info
),
6941 globals
->root
.sgot
->contents
+ off
6946 /* This TLS symbol is global. We emit a
6947 relocation to fixup the tls offset at load
6950 ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPREL
));
6953 (globals
->root
.sgot
->output_section
->vma
6954 + globals
->root
.sgot
->output_offset
+ off
6957 loc
= globals
->root
.srelgot
->contents
;
6958 loc
+= globals
->root
.srelgot
->reloc_count
++
6959 * RELOC_SIZE (globals
);
6960 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6961 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
6962 globals
->root
.sgot
->contents
+ off
6968 bfd_put_NN (output_bfd
, (bfd_vma
) 1,
6969 globals
->root
.sgot
->contents
+ off
);
6970 bfd_put_NN (output_bfd
,
6971 relocation
- dtpoff_base (info
),
6972 globals
->root
.sgot
->contents
+ off
6976 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6980 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6981 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
6982 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6983 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6984 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6985 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6987 bfd_boolean need_relocs
= FALSE
;
6992 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6994 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6997 (!bfd_link_executable (info
) || indx
!= 0) &&
6999 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7000 || h
->root
.type
!= bfd_link_hash_undefweak
);
7002 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
7006 Elf_Internal_Rela rela
;
7009 rela
.r_addend
= relocation
- dtpoff_base (info
);
7013 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_TPREL
));
7014 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
7015 globals
->root
.sgot
->output_offset
+ off
;
7017 loc
= globals
->root
.srelgot
->contents
;
7018 loc
+= globals
->root
.srelgot
->reloc_count
++
7019 * RELOC_SIZE (htab
);
7021 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
7023 bfd_put_NN (output_bfd
, rela
.r_addend
,
7024 globals
->root
.sgot
->contents
+ off
);
7027 bfd_put_NN (output_bfd
, relocation
- tpoff_base (info
),
7028 globals
->root
.sgot
->contents
+ off
);
7030 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
7034 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
7035 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7036 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7037 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
7038 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7039 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7040 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7041 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd
, h
, r_symndx
))
7043 bfd_boolean need_relocs
= FALSE
;
7044 int indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
7045 bfd_vma off
= symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
);
7047 need_relocs
= (h
== NULL
7048 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7049 || h
->root
.type
!= bfd_link_hash_undefweak
);
7051 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
7052 BFD_ASSERT (globals
->root
.sgot
!= NULL
);
7057 Elf_Internal_Rela rela
;
7058 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLSDESC
));
7061 rela
.r_offset
= (globals
->root
.sgotplt
->output_section
->vma
7062 + globals
->root
.sgotplt
->output_offset
7063 + off
+ globals
->sgotplt_jump_table_size
);
7066 rela
.r_addend
= relocation
- dtpoff_base (info
);
7068 /* Allocate the next available slot in the PLT reloc
7069 section to hold our R_AARCH64_TLSDESC, the next
7070 available slot is determined from reloc_count,
7071 which we step. But note, reloc_count was
7072 artifically moved down while allocating slots for
7073 real PLT relocs such that all of the PLT relocs
7074 will fit above the initial reloc_count and the
7075 extra stuff will fit below. */
7076 loc
= globals
->root
.srelplt
->contents
;
7077 loc
+= globals
->root
.srelplt
->reloc_count
++
7078 * RELOC_SIZE (globals
);
7080 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
7082 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
7083 globals
->root
.sgotplt
->contents
+ off
+
7084 globals
->sgotplt_jump_table_size
);
7085 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
7086 globals
->root
.sgotplt
->contents
+ off
+
7087 globals
->sgotplt_jump_table_size
+
7091 symbol_tlsdesc_got_offset_mark (input_bfd
, h
, r_symndx
);
7098 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7099 because such sections are not SEC_ALLOC and thus ld.so will
7100 not process them. */
7101 if (unresolved_reloc
7102 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
7104 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
7105 +rel
->r_offset
) != (bfd_vma
) - 1)
7108 /* xgettext:c-format */
7109 (_("%pB(%pA+%#" PRIx64
"): "
7110 "unresolvable %s relocation against symbol `%s'"),
7111 input_bfd
, input_section
, (uint64_t) rel
->r_offset
, howto
->name
,
7112 h
->root
.root
.string
);
7116 if (r
!= bfd_reloc_ok
&& r
!= bfd_reloc_continue
)
7118 bfd_reloc_code_real_type real_r_type
7119 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
7123 case bfd_reloc_overflow
:
7124 (*info
->callbacks
->reloc_overflow
)
7125 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
, (bfd_vma
) 0,
7126 input_bfd
, input_section
, rel
->r_offset
);
7127 if (real_r_type
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
7128 || real_r_type
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
)
7130 (*info
->callbacks
->warning
)
7132 _("too many GOT entries for -fpic, "
7133 "please recompile with -fPIC"),
7134 name
, input_bfd
, input_section
, rel
->r_offset
);
7137 /* Overflow can occur when a variable is referenced with a type
7138 that has a larger alignment than the type with which it was
7140 file1.c: extern int foo; int a (void) { return foo; }
7141 file2.c: char bar, foo, baz;
7142 If the variable is placed into a data section at an offset
7143 that is incompatible with the larger alignment requirement
7144 overflow will occur. (Strictly speaking this is not overflow
7145 but rather an alignment problem, but the bfd_reloc_ error
7146 enum does not have a value to cover that situation).
7148 Try to catch this situation here and provide a more helpful
7149 error message to the user. */
7150 if (addend
& ((1 << howto
->rightshift
) - 1)
7151 /* FIXME: Are we testing all of the appropriate reloc
7153 && (real_r_type
== BFD_RELOC_AARCH64_LD_LO19_PCREL
7154 || real_r_type
== BFD_RELOC_AARCH64_LDST16_LO12
7155 || real_r_type
== BFD_RELOC_AARCH64_LDST32_LO12
7156 || real_r_type
== BFD_RELOC_AARCH64_LDST64_LO12
7157 || real_r_type
== BFD_RELOC_AARCH64_LDST128_LO12
))
7159 info
->callbacks
->warning
7160 (info
, _("one possible cause of this error is that the \
7161 symbol is being referenced in the indicated code as if it had a larger \
7162 alignment than was declared where it was defined"),
7163 name
, input_bfd
, input_section
, rel
->r_offset
);
7167 case bfd_reloc_undefined
:
7168 (*info
->callbacks
->undefined_symbol
)
7169 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
7172 case bfd_reloc_outofrange
:
7173 error_message
= _("out of range");
7176 case bfd_reloc_notsupported
:
7177 error_message
= _("unsupported relocation");
7180 case bfd_reloc_dangerous
:
7181 /* error_message should already be set. */
7185 error_message
= _("unknown error");
7189 BFD_ASSERT (error_message
!= NULL
);
7190 (*info
->callbacks
->reloc_dangerous
)
7191 (info
, error_message
, input_bfd
, input_section
, rel
->r_offset
);
7203 /* Set the right machine number. */
7206 elfNN_aarch64_object_p (bfd
*abfd
)
7209 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64_ilp32
);
7211 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64
);
7216 /* Function to keep AArch64 specific flags in the ELF header. */
7219 elfNN_aarch64_set_private_flags (bfd
*abfd
, flagword flags
)
7221 if (elf_flags_init (abfd
) && elf_elfheader (abfd
)->e_flags
!= flags
)
7226 elf_elfheader (abfd
)->e_flags
= flags
;
7227 elf_flags_init (abfd
) = TRUE
;
7233 /* Merge backend specific data from an object file to the output
7234 object file when linking. */
7237 elfNN_aarch64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
7239 bfd
*obfd
= info
->output_bfd
;
7242 bfd_boolean flags_compatible
= TRUE
;
7245 /* Check if we have the same endianess. */
7246 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
7249 if (!is_aarch64_elf (ibfd
) || !is_aarch64_elf (obfd
))
7252 /* The input BFD must have had its flags initialised. */
7253 /* The following seems bogus to me -- The flags are initialized in
7254 the assembler but I don't think an elf_flags_init field is
7255 written into the object. */
7256 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7258 in_flags
= elf_elfheader (ibfd
)->e_flags
;
7259 out_flags
= elf_elfheader (obfd
)->e_flags
;
7261 if (!elf_flags_init (obfd
))
7263 /* If the input is the default architecture and had the default
7264 flags then do not bother setting the flags for the output
7265 architecture, instead allow future merges to do this. If no
7266 future merges ever set these flags then they will retain their
7267 uninitialised values, which surprise surprise, correspond
7268 to the default values. */
7269 if (bfd_get_arch_info (ibfd
)->the_default
7270 && elf_elfheader (ibfd
)->e_flags
== 0)
7273 elf_flags_init (obfd
) = TRUE
;
7274 elf_elfheader (obfd
)->e_flags
= in_flags
;
7276 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
7277 && bfd_get_arch_info (obfd
)->the_default
)
7278 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
7279 bfd_get_mach (ibfd
));
7284 /* Identical flags must be compatible. */
7285 if (in_flags
== out_flags
)
7288 /* Check to see if the input BFD actually contains any sections. If
7289 not, its flags may not have been initialised either, but it
7290 cannot actually cause any incompatiblity. Do not short-circuit
7291 dynamic objects; their section list may be emptied by
7292 elf_link_add_object_symbols.
7294 Also check to see if there are no code sections in the input.
7295 In this case there is no need to check for code specific flags.
7296 XXX - do we need to worry about floating-point format compatability
7297 in data sections ? */
7298 if (!(ibfd
->flags
& DYNAMIC
))
7300 bfd_boolean null_input_bfd
= TRUE
;
7301 bfd_boolean only_data_sections
= TRUE
;
7303 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7305 if ((bfd_section_flags (sec
)
7306 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7307 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7308 only_data_sections
= FALSE
;
7310 null_input_bfd
= FALSE
;
7314 if (null_input_bfd
|| only_data_sections
)
7318 return flags_compatible
;
7321 /* Display the flags field. */
7324 elfNN_aarch64_print_private_bfd_data (bfd
*abfd
, void *ptr
)
7326 FILE *file
= (FILE *) ptr
;
7327 unsigned long flags
;
7329 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
7331 /* Print normal ELF private data. */
7332 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
7334 flags
= elf_elfheader (abfd
)->e_flags
;
7335 /* Ignore init flag - it may not be set, despite the flags field
7336 containing valid data. */
7338 /* xgettext:c-format */
7339 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
7342 fprintf (file
, _("<Unrecognised flag bits set>"));
7349 /* Find dynamic relocs for H that apply to read-only sections. */
7352 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7354 struct elf_dyn_relocs
*p
;
7356 for (p
= elf_aarch64_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7358 asection
*s
= p
->sec
->output_section
;
7360 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7366 /* Return true if we need copy relocation against EH. */
7369 need_copy_relocation_p (struct elf_aarch64_link_hash_entry
*eh
)
7371 struct elf_dyn_relocs
*p
;
7374 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7376 /* If there is any pc-relative reference, we need to keep copy relocation
7377 to avoid propagating the relocation into runtime that current glibc
7378 does not support. */
7382 s
= p
->sec
->output_section
;
7383 /* Need copy relocation if it's against read-only section. */
7384 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7391 /* Adjust a symbol defined by a dynamic object and referenced by a
7392 regular object. The current definition is in some section of the
7393 dynamic object, but we're not including those sections. We have to
7394 change the definition to something the rest of the link can
7398 elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7399 struct elf_link_hash_entry
*h
)
7401 struct elf_aarch64_link_hash_table
*htab
;
7404 /* If this is a function, put it in the procedure linkage table. We
7405 will fill in the contents of the procedure linkage table later,
7406 when we know the address of the .got section. */
7407 if (h
->type
== STT_FUNC
|| h
->type
== STT_GNU_IFUNC
|| h
->needs_plt
)
7409 if (h
->plt
.refcount
<= 0
7410 || (h
->type
!= STT_GNU_IFUNC
7411 && (SYMBOL_CALLS_LOCAL (info
, h
)
7412 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7413 && h
->root
.type
== bfd_link_hash_undefweak
))))
7415 /* This case can occur if we saw a CALL26 reloc in
7416 an input file, but the symbol wasn't referred to
7417 by a dynamic object or all references were
7418 garbage collected. In which case we can end up
7420 h
->plt
.offset
= (bfd_vma
) - 1;
7427 /* Otherwise, reset to -1. */
7428 h
->plt
.offset
= (bfd_vma
) - 1;
7431 /* If this is a weak symbol, and there is a real definition, the
7432 processor independent code will have arranged for us to see the
7433 real definition first, and we can just use the same value. */
7434 if (h
->is_weakalias
)
7436 struct elf_link_hash_entry
*def
= weakdef (h
);
7437 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
7438 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
7439 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
7440 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
7441 h
->non_got_ref
= def
->non_got_ref
;
7445 /* If we are creating a shared library, we must presume that the
7446 only references to the symbol are via the global offset table.
7447 For such cases we need not do anything here; the relocations will
7448 be handled correctly by relocate_section. */
7449 if (bfd_link_pic (info
))
7452 /* If there are no references to this symbol that do not use the
7453 GOT, we don't need to generate a copy reloc. */
7454 if (!h
->non_got_ref
)
7457 /* If -z nocopyreloc was given, we won't generate them either. */
7458 if (info
->nocopyreloc
)
7464 if (ELIMINATE_COPY_RELOCS
)
7466 struct elf_aarch64_link_hash_entry
*eh
;
7467 /* If we don't find any dynamic relocs in read-only sections, then
7468 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7469 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
7470 if (!need_copy_relocation_p (eh
))
7477 /* We must allocate the symbol in our .dynbss section, which will
7478 become part of the .bss section of the executable. There will be
7479 an entry for this symbol in the .dynsym section. The dynamic
7480 object will contain position independent code, so all references
7481 from the dynamic object to this symbol will go through the global
7482 offset table. The dynamic linker will use the .dynsym entry to
7483 determine the address it must put in the global offset table, so
7484 both the dynamic object and the regular object will refer to the
7485 same memory location for the variable. */
7487 htab
= elf_aarch64_hash_table (info
);
7489 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
7490 to copy the initial value out of the dynamic object and into the
7491 runtime process image. */
7492 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7494 s
= htab
->root
.sdynrelro
;
7495 srel
= htab
->root
.sreldynrelro
;
7499 s
= htab
->root
.sdynbss
;
7500 srel
= htab
->root
.srelbss
;
7502 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7504 srel
->size
+= RELOC_SIZE (htab
);
7508 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7513 elfNN_aarch64_allocate_local_symbols (bfd
*abfd
, unsigned number
)
7515 struct elf_aarch64_local_symbol
*locals
;
7516 locals
= elf_aarch64_locals (abfd
);
7519 locals
= (struct elf_aarch64_local_symbol
*)
7520 bfd_zalloc (abfd
, number
* sizeof (struct elf_aarch64_local_symbol
));
7523 elf_aarch64_locals (abfd
) = locals
;
7528 /* Create the .got section to hold the global offset table. */
7531 aarch64_elf_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
7533 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
7536 struct elf_link_hash_entry
*h
;
7537 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7539 /* This function may be called more than once. */
7540 if (htab
->sgot
!= NULL
)
7543 flags
= bed
->dynamic_sec_flags
;
7545 s
= bfd_make_section_anyway_with_flags (abfd
,
7546 (bed
->rela_plts_and_copies_p
7547 ? ".rela.got" : ".rel.got"),
7548 (bed
->dynamic_sec_flags
7551 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7555 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
7557 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7560 htab
->sgot
->size
+= GOT_ENTRY_SIZE
;
7562 if (bed
->want_got_sym
)
7564 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7565 (or .got.plt) section. We don't do this in the linker script
7566 because we don't want to define the symbol if we are not creating
7567 a global offset table. */
7568 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
,
7569 "_GLOBAL_OFFSET_TABLE_");
7570 elf_hash_table (info
)->hgot
= h
;
7575 if (bed
->want_got_plt
)
7577 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
7579 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7584 /* The first bit of the global offset table is the header. */
7585 s
->size
+= bed
->got_header_size
;
7590 /* Look through the relocs for a section during the first phase. */
7593 elfNN_aarch64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
7594 asection
*sec
, const Elf_Internal_Rela
*relocs
)
7596 Elf_Internal_Shdr
*symtab_hdr
;
7597 struct elf_link_hash_entry
**sym_hashes
;
7598 const Elf_Internal_Rela
*rel
;
7599 const Elf_Internal_Rela
*rel_end
;
7602 struct elf_aarch64_link_hash_table
*htab
;
7604 if (bfd_link_relocatable (info
))
7607 BFD_ASSERT (is_aarch64_elf (abfd
));
7609 htab
= elf_aarch64_hash_table (info
);
7612 symtab_hdr
= &elf_symtab_hdr (abfd
);
7613 sym_hashes
= elf_sym_hashes (abfd
);
7615 rel_end
= relocs
+ sec
->reloc_count
;
7616 for (rel
= relocs
; rel
< rel_end
; rel
++)
7618 struct elf_link_hash_entry
*h
;
7619 unsigned int r_symndx
;
7620 unsigned int r_type
;
7621 bfd_reloc_code_real_type bfd_r_type
;
7622 Elf_Internal_Sym
*isym
;
7624 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
7625 r_type
= ELFNN_R_TYPE (rel
->r_info
);
7627 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7629 /* xgettext:c-format */
7630 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd
, r_symndx
);
7634 if (r_symndx
< symtab_hdr
->sh_info
)
7636 /* A local symbol. */
7637 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
7642 /* Check relocation against local STT_GNU_IFUNC symbol. */
7643 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
7645 h
= elfNN_aarch64_get_local_sym_hash (htab
, abfd
, rel
,
7650 /* Fake a STT_GNU_IFUNC symbol. */
7651 h
->type
= STT_GNU_IFUNC
;
7654 h
->forced_local
= 1;
7655 h
->root
.type
= bfd_link_hash_defined
;
7662 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7663 while (h
->root
.type
== bfd_link_hash_indirect
7664 || h
->root
.type
== bfd_link_hash_warning
)
7665 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7668 /* Could be done earlier, if h were already available. */
7669 bfd_r_type
= aarch64_tls_transition (abfd
, info
, r_type
, h
, r_symndx
);
7673 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7674 This shows up in particular in an R_AARCH64_PREL64 in large model
7675 when calculating the pc-relative address to .got section which is
7676 used to initialize the gp register. */
7677 if (h
->root
.root
.string
7678 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
7680 if (htab
->root
.dynobj
== NULL
)
7681 htab
->root
.dynobj
= abfd
;
7683 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
7686 BFD_ASSERT (h
== htab
->root
.hgot
);
7689 /* Create the ifunc sections for static executables. If we
7690 never see an indirect function symbol nor we are building
7691 a static executable, those sections will be empty and
7692 won't appear in output. */
7698 case BFD_RELOC_AARCH64_ADD_LO12
:
7699 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7700 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7701 case BFD_RELOC_AARCH64_CALL26
:
7702 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7703 case BFD_RELOC_AARCH64_JUMP26
:
7704 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7705 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7706 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7707 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7708 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7709 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7710 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7711 case BFD_RELOC_AARCH64_NN
:
7712 if (htab
->root
.dynobj
== NULL
)
7713 htab
->root
.dynobj
= abfd
;
7714 if (!_bfd_elf_create_ifunc_sections (htab
->root
.dynobj
, info
))
7719 /* It is referenced by a non-shared object. */
7725 case BFD_RELOC_AARCH64_16
:
7727 case BFD_RELOC_AARCH64_32
:
7729 if (bfd_link_pic (info
) && (sec
->flags
& SEC_ALLOC
) != 0)
7732 /* This is an absolute symbol. It represents a value instead
7734 && (bfd_is_abs_symbol (&h
->root
)
7735 /* This is an undefined symbol. */
7736 || h
->root
.type
== bfd_link_hash_undefined
))
7739 /* For local symbols, defined global symbols in a non-ABS section,
7740 it is assumed that the value is an address. */
7741 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7743 /* xgettext:c-format */
7744 (_("%pB: relocation %s against `%s' can not be used when making "
7746 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7747 (h
) ? h
->root
.root
.string
: "a local symbol");
7748 bfd_set_error (bfd_error_bad_value
);
7754 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
7755 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
7756 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
7757 case BFD_RELOC_AARCH64_MOVW_G3
:
7758 if (bfd_link_pic (info
))
7760 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7762 /* xgettext:c-format */
7763 (_("%pB: relocation %s against `%s' can not be used when making "
7764 "a shared object; recompile with -fPIC"),
7765 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7766 (h
) ? h
->root
.root
.string
: "a local symbol");
7767 bfd_set_error (bfd_error_bad_value
);
7772 case BFD_RELOC_AARCH64_16_PCREL
:
7773 case BFD_RELOC_AARCH64_32_PCREL
:
7774 case BFD_RELOC_AARCH64_64_PCREL
:
7775 case BFD_RELOC_AARCH64_ADD_LO12
:
7776 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
7777 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7778 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
7779 case BFD_RELOC_AARCH64_LDST128_LO12
:
7780 case BFD_RELOC_AARCH64_LDST16_LO12
:
7781 case BFD_RELOC_AARCH64_LDST32_LO12
:
7782 case BFD_RELOC_AARCH64_LDST64_LO12
:
7783 case BFD_RELOC_AARCH64_LDST8_LO12
:
7784 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
7785 if (h
== NULL
|| bfd_link_pic (info
))
7789 case BFD_RELOC_AARCH64_NN
:
7791 /* We don't need to handle relocs into sections not going into
7792 the "real" output. */
7793 if ((sec
->flags
& SEC_ALLOC
) == 0)
7798 if (!bfd_link_pic (info
))
7801 h
->plt
.refcount
+= 1;
7802 h
->pointer_equality_needed
= 1;
7805 /* No need to do anything if we're not creating a shared
7807 if (!(bfd_link_pic (info
)
7808 /* If on the other hand, we are creating an executable, we
7809 may need to keep relocations for symbols satisfied by a
7810 dynamic library if we manage to avoid copy relocs for the
7813 NOTE: Currently, there is no support of copy relocs
7814 elimination on pc-relative relocation types, because there is
7815 no dynamic relocation support for them in glibc. We still
7816 record the dynamic symbol reference for them. This is
7817 because one symbol may be referenced by both absolute
7818 relocation (for example, BFD_RELOC_AARCH64_NN) and
7819 pc-relative relocation. We need full symbol reference
7820 information to make correct decision later in
7821 elfNN_aarch64_adjust_dynamic_symbol. */
7822 || (ELIMINATE_COPY_RELOCS
7823 && !bfd_link_pic (info
)
7825 && (h
->root
.type
== bfd_link_hash_defweak
7826 || !h
->def_regular
))))
7830 struct elf_dyn_relocs
*p
;
7831 struct elf_dyn_relocs
**head
;
7832 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7834 /* We must copy these reloc types into the output file.
7835 Create a reloc section in dynobj and make room for
7839 if (htab
->root
.dynobj
== NULL
)
7840 htab
->root
.dynobj
= abfd
;
7842 sreloc
= _bfd_elf_make_dynamic_reloc_section
7843 (sec
, htab
->root
.dynobj
, LOG_FILE_ALIGN
, abfd
, /*rela? */ TRUE
);
7849 /* If this is a global symbol, we count the number of
7850 relocations we need for this symbol. */
7853 struct elf_aarch64_link_hash_entry
*eh
;
7854 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
7855 head
= &eh
->dyn_relocs
;
7859 /* Track dynamic relocs needed for local syms too.
7860 We really need local syms available to do this
7866 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
7871 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
7875 /* Beware of type punned pointers vs strict aliasing
7877 vpp
= &(elf_section_data (s
)->local_dynrel
);
7878 head
= (struct elf_dyn_relocs
**) vpp
;
7882 if (p
== NULL
|| p
->sec
!= sec
)
7884 size_t amt
= sizeof *p
;
7885 p
= ((struct elf_dyn_relocs
*)
7886 bfd_zalloc (htab
->root
.dynobj
, amt
));
7896 if (elfNN_aarch64_howto_table
[howto_index
].pc_relative
)
7901 /* RR: We probably want to keep a consistency check that
7902 there are no dangling GOT_PAGE relocs. */
7903 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7904 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7905 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7906 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7907 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7908 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7909 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7910 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7911 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7912 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
7913 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7914 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7915 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
7916 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
7917 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7918 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7919 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7920 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
7921 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
7922 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
7923 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
7924 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
7925 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
7926 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
7927 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
7928 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
7929 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
7930 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
7931 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
7932 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
7933 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
7936 unsigned old_got_type
;
7938 got_type
= aarch64_reloc_got_type (bfd_r_type
);
7942 h
->got
.refcount
+= 1;
7943 old_got_type
= elf_aarch64_hash_entry (h
)->got_type
;
7947 struct elf_aarch64_local_symbol
*locals
;
7949 if (!elfNN_aarch64_allocate_local_symbols
7950 (abfd
, symtab_hdr
->sh_info
))
7953 locals
= elf_aarch64_locals (abfd
);
7954 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7955 locals
[r_symndx
].got_refcount
+= 1;
7956 old_got_type
= locals
[r_symndx
].got_type
;
7959 /* If a variable is accessed with both general dynamic TLS
7960 methods, two slots may be created. */
7961 if (GOT_TLS_GD_ANY_P (old_got_type
) && GOT_TLS_GD_ANY_P (got_type
))
7962 got_type
|= old_got_type
;
7964 /* We will already have issued an error message if there
7965 is a TLS/non-TLS mismatch, based on the symbol type.
7966 So just combine any TLS types needed. */
7967 if (old_got_type
!= GOT_UNKNOWN
&& old_got_type
!= GOT_NORMAL
7968 && got_type
!= GOT_NORMAL
)
7969 got_type
|= old_got_type
;
7971 /* If the symbol is accessed by both IE and GD methods, we
7972 are able to relax. Turn off the GD flag, without
7973 messing up with any other kind of TLS types that may be
7975 if ((got_type
& GOT_TLS_IE
) && GOT_TLS_GD_ANY_P (got_type
))
7976 got_type
&= ~ (GOT_TLSDESC_GD
| GOT_TLS_GD
);
7978 if (old_got_type
!= got_type
)
7981 elf_aarch64_hash_entry (h
)->got_type
= got_type
;
7984 struct elf_aarch64_local_symbol
*locals
;
7985 locals
= elf_aarch64_locals (abfd
);
7986 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7987 locals
[r_symndx
].got_type
= got_type
;
7991 if (htab
->root
.dynobj
== NULL
)
7992 htab
->root
.dynobj
= abfd
;
7993 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
7998 case BFD_RELOC_AARCH64_CALL26
:
7999 case BFD_RELOC_AARCH64_JUMP26
:
8000 /* If this is a local symbol then we resolve it
8001 directly without creating a PLT entry. */
8006 if (h
->plt
.refcount
<= 0)
8007 h
->plt
.refcount
= 1;
8009 h
->plt
.refcount
+= 1;
8020 /* Treat mapping symbols as special target symbols. */
8023 elfNN_aarch64_is_target_special_symbol (bfd
*abfd ATTRIBUTE_UNUSED
,
8026 return bfd_is_aarch64_special_symbol_name (sym
->name
,
8027 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
);
8030 /* If the ELF symbol SYM might be a function in SEC, return the
8031 function size and set *CODE_OFF to the function's entry point,
8032 otherwise return zero. */
8034 static bfd_size_type
8035 elfNN_aarch64_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
8040 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
8041 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0
8042 || sym
->section
!= sec
)
8045 if (!(sym
->flags
& BSF_SYNTHETIC
))
8046 switch (ELF_ST_TYPE (((elf_symbol_type
*) sym
)->internal_elf_sym
.st_info
))
8055 if ((sym
->flags
& BSF_LOCAL
)
8056 && bfd_is_aarch64_special_symbol_name (sym
->name
,
8057 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
))
8060 *code_off
= sym
->value
;
8062 if (!(sym
->flags
& BSF_SYNTHETIC
))
8063 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
8070 elfNN_aarch64_find_inliner_info (bfd
*abfd
,
8071 const char **filename_ptr
,
8072 const char **functionname_ptr
,
8073 unsigned int *line_ptr
)
8076 found
= _bfd_dwarf2_find_inliner_info
8077 (abfd
, filename_ptr
,
8078 functionname_ptr
, line_ptr
, &elf_tdata (abfd
)->dwarf2_find_line_info
);
8084 elfNN_aarch64_init_file_header (bfd
*abfd
, struct bfd_link_info
*link_info
)
8086 Elf_Internal_Ehdr
*i_ehdrp
; /* ELF file header, internal form. */
8088 if (!_bfd_elf_init_file_header (abfd
, link_info
))
8091 i_ehdrp
= elf_elfheader (abfd
);
8092 i_ehdrp
->e_ident
[EI_ABIVERSION
] = AARCH64_ELF_ABI_VERSION
;
8096 static enum elf_reloc_type_class
8097 elfNN_aarch64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
8098 const asection
*rel_sec ATTRIBUTE_UNUSED
,
8099 const Elf_Internal_Rela
*rela
)
8101 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
8103 if (htab
->root
.dynsym
!= NULL
8104 && htab
->root
.dynsym
->contents
!= NULL
)
8106 /* Check relocation against STT_GNU_IFUNC symbol if there are
8108 bfd
*abfd
= info
->output_bfd
;
8109 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
8110 unsigned long r_symndx
= ELFNN_R_SYM (rela
->r_info
);
8111 if (r_symndx
!= STN_UNDEF
)
8113 Elf_Internal_Sym sym
;
8114 if (!bed
->s
->swap_symbol_in (abfd
,
8115 (htab
->root
.dynsym
->contents
8116 + r_symndx
* bed
->s
->sizeof_sym
),
8119 /* xgettext:c-format */
8120 _bfd_error_handler (_("%pB symbol number %lu references"
8121 " nonexistent SHT_SYMTAB_SHNDX section"),
8123 /* Ideally an error class should be returned here. */
8125 else if (ELF_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
8126 return reloc_class_ifunc
;
8130 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
8132 case AARCH64_R (IRELATIVE
):
8133 return reloc_class_ifunc
;
8134 case AARCH64_R (RELATIVE
):
8135 return reloc_class_relative
;
8136 case AARCH64_R (JUMP_SLOT
):
8137 return reloc_class_plt
;
8138 case AARCH64_R (COPY
):
8139 return reloc_class_copy
;
8141 return reloc_class_normal
;
8145 /* Handle an AArch64 specific section when reading an object file. This is
8146 called when bfd_section_from_shdr finds a section with an unknown
8150 elfNN_aarch64_section_from_shdr (bfd
*abfd
,
8151 Elf_Internal_Shdr
*hdr
,
8152 const char *name
, int shindex
)
8154 /* There ought to be a place to keep ELF backend specific flags, but
8155 at the moment there isn't one. We just keep track of the
8156 sections by their name, instead. Fortunately, the ABI gives
8157 names for all the AArch64 specific sections, so we will probably get
8159 switch (hdr
->sh_type
)
8161 case SHT_AARCH64_ATTRIBUTES
:
8168 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
8174 /* A structure used to record a list of sections, independently
8175 of the next and prev fields in the asection structure. */
8176 typedef struct section_list
8179 struct section_list
*next
;
8180 struct section_list
*prev
;
8184 /* Unfortunately we need to keep a list of sections for which
8185 an _aarch64_elf_section_data structure has been allocated. This
8186 is because it is possible for functions like elfNN_aarch64_write_section
8187 to be called on a section which has had an elf_data_structure
8188 allocated for it (and so the used_by_bfd field is valid) but
8189 for which the AArch64 extended version of this structure - the
8190 _aarch64_elf_section_data structure - has not been allocated. */
8191 static section_list
*sections_with_aarch64_elf_section_data
= NULL
;
8194 record_section_with_aarch64_elf_section_data (asection
*sec
)
8196 struct section_list
*entry
;
8198 entry
= bfd_malloc (sizeof (*entry
));
8202 entry
->next
= sections_with_aarch64_elf_section_data
;
8204 if (entry
->next
!= NULL
)
8205 entry
->next
->prev
= entry
;
8206 sections_with_aarch64_elf_section_data
= entry
;
8209 static struct section_list
*
8210 find_aarch64_elf_section_entry (asection
*sec
)
8212 struct section_list
*entry
;
8213 static struct section_list
*last_entry
= NULL
;
8215 /* This is a short cut for the typical case where the sections are added
8216 to the sections_with_aarch64_elf_section_data list in forward order and
8217 then looked up here in backwards order. This makes a real difference
8218 to the ld-srec/sec64k.exp linker test. */
8219 entry
= sections_with_aarch64_elf_section_data
;
8220 if (last_entry
!= NULL
)
8222 if (last_entry
->sec
== sec
)
8224 else if (last_entry
->next
!= NULL
&& last_entry
->next
->sec
== sec
)
8225 entry
= last_entry
->next
;
8228 for (; entry
; entry
= entry
->next
)
8229 if (entry
->sec
== sec
)
8233 /* Record the entry prior to this one - it is the entry we are
8234 most likely to want to locate next time. Also this way if we
8235 have been called from
8236 unrecord_section_with_aarch64_elf_section_data () we will not
8237 be caching a pointer that is about to be freed. */
8238 last_entry
= entry
->prev
;
8244 unrecord_section_with_aarch64_elf_section_data (asection
*sec
)
8246 struct section_list
*entry
;
8248 entry
= find_aarch64_elf_section_entry (sec
);
8252 if (entry
->prev
!= NULL
)
8253 entry
->prev
->next
= entry
->next
;
8254 if (entry
->next
!= NULL
)
8255 entry
->next
->prev
= entry
->prev
;
8256 if (entry
== sections_with_aarch64_elf_section_data
)
8257 sections_with_aarch64_elf_section_data
= entry
->next
;
8266 struct bfd_link_info
*info
;
8269 int (*func
) (void *, const char *, Elf_Internal_Sym
*,
8270 asection
*, struct elf_link_hash_entry
*);
8271 } output_arch_syminfo
;
8273 enum map_symbol_type
8280 /* Output a single mapping symbol. */
8283 elfNN_aarch64_output_map_sym (output_arch_syminfo
*osi
,
8284 enum map_symbol_type type
, bfd_vma offset
)
8286 static const char *names
[2] = { "$x", "$d" };
8287 Elf_Internal_Sym sym
;
8289 sym
.st_value
= (osi
->sec
->output_section
->vma
8290 + osi
->sec
->output_offset
+ offset
);
8293 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
8294 sym
.st_shndx
= osi
->sec_shndx
;
8295 return osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
) == 1;
8298 /* Output a single local symbol for a generated stub. */
8301 elfNN_aarch64_output_stub_sym (output_arch_syminfo
*osi
, const char *name
,
8302 bfd_vma offset
, bfd_vma size
)
8304 Elf_Internal_Sym sym
;
8306 sym
.st_value
= (osi
->sec
->output_section
->vma
8307 + osi
->sec
->output_offset
+ offset
);
8310 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
8311 sym
.st_shndx
= osi
->sec_shndx
;
8312 return osi
->func (osi
->finfo
, name
, &sym
, osi
->sec
, NULL
) == 1;
8316 aarch64_map_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8318 struct elf_aarch64_stub_hash_entry
*stub_entry
;
8322 output_arch_syminfo
*osi
;
8324 /* Massage our args to the form they really have. */
8325 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
8326 osi
= (output_arch_syminfo
*) in_arg
;
8328 stub_sec
= stub_entry
->stub_sec
;
8330 /* Ensure this stub is attached to the current section being
8332 if (stub_sec
!= osi
->sec
)
8335 addr
= (bfd_vma
) stub_entry
->stub_offset
;
8337 stub_name
= stub_entry
->output_name
;
8339 switch (stub_entry
->stub_type
)
8341 case aarch64_stub_adrp_branch
:
8342 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8343 sizeof (aarch64_adrp_branch_stub
)))
8345 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8348 case aarch64_stub_long_branch
:
8349 if (!elfNN_aarch64_output_stub_sym
8350 (osi
, stub_name
, addr
, sizeof (aarch64_long_branch_stub
)))
8352 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8354 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_DATA
, addr
+ 16))
8357 case aarch64_stub_erratum_835769_veneer
:
8358 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8359 sizeof (aarch64_erratum_835769_stub
)))
8361 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8364 case aarch64_stub_erratum_843419_veneer
:
8365 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8366 sizeof (aarch64_erratum_843419_stub
)))
8368 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8371 case aarch64_stub_none
:
8381 /* Output mapping symbols for linker generated sections. */
8384 elfNN_aarch64_output_arch_local_syms (bfd
*output_bfd
,
8385 struct bfd_link_info
*info
,
8387 int (*func
) (void *, const char *,
8390 struct elf_link_hash_entry
8393 output_arch_syminfo osi
;
8394 struct elf_aarch64_link_hash_table
*htab
;
8396 htab
= elf_aarch64_hash_table (info
);
8402 /* Long calls stubs. */
8403 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
)
8407 for (stub_sec
= htab
->stub_bfd
->sections
;
8408 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
8410 /* Ignore non-stub sections. */
8411 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
8416 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
8417 (output_bfd
, osi
.sec
->output_section
);
8419 /* The first instruction in a stub is always a branch. */
8420 if (!elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0))
8423 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_map_one_stub
,
8428 /* Finally, output mapping symbols for the PLT. */
8429 if (!htab
->root
.splt
|| htab
->root
.splt
->size
== 0)
8432 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
8433 (output_bfd
, htab
->root
.splt
->output_section
);
8434 osi
.sec
= htab
->root
.splt
;
8436 elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0);
8442 /* Allocate target specific section data. */
8445 elfNN_aarch64_new_section_hook (bfd
*abfd
, asection
*sec
)
8447 if (!sec
->used_by_bfd
)
8449 _aarch64_elf_section_data
*sdata
;
8450 size_t amt
= sizeof (*sdata
);
8452 sdata
= bfd_zalloc (abfd
, amt
);
8455 sec
->used_by_bfd
= sdata
;
8458 record_section_with_aarch64_elf_section_data (sec
);
8460 return _bfd_elf_new_section_hook (abfd
, sec
);
8465 unrecord_section_via_map_over_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
8467 void *ignore ATTRIBUTE_UNUSED
)
8469 unrecord_section_with_aarch64_elf_section_data (sec
);
8473 elfNN_aarch64_close_and_cleanup (bfd
*abfd
)
8476 bfd_map_over_sections (abfd
,
8477 unrecord_section_via_map_over_sections
, NULL
);
8479 return _bfd_elf_close_and_cleanup (abfd
);
8483 elfNN_aarch64_bfd_free_cached_info (bfd
*abfd
)
8486 bfd_map_over_sections (abfd
,
8487 unrecord_section_via_map_over_sections
, NULL
);
8489 return _bfd_free_cached_info (abfd
);
8492 /* Create dynamic sections. This is different from the ARM backend in that
8493 the got, plt, gotplt and their relocation sections are all created in the
8494 standard part of the bfd elf backend. */
8497 elfNN_aarch64_create_dynamic_sections (bfd
*dynobj
,
8498 struct bfd_link_info
*info
)
8500 /* We need to create .got section. */
8501 if (!aarch64_elf_create_got_section (dynobj
, info
))
8504 return _bfd_elf_create_dynamic_sections (dynobj
, info
);
8508 /* Allocate space in .plt, .got and associated reloc sections for
8512 elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8514 struct bfd_link_info
*info
;
8515 struct elf_aarch64_link_hash_table
*htab
;
8516 struct elf_aarch64_link_hash_entry
*eh
;
8517 struct elf_dyn_relocs
*p
;
8519 /* An example of a bfd_link_hash_indirect symbol is versioned
8520 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8521 -> __gxx_personality_v0(bfd_link_hash_defined)
8523 There is no need to process bfd_link_hash_indirect symbols here
8524 because we will also be presented with the concrete instance of
8525 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8526 called to copy all relevant data from the generic to the concrete
8528 if (h
->root
.type
== bfd_link_hash_indirect
)
8531 if (h
->root
.type
== bfd_link_hash_warning
)
8532 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8534 info
= (struct bfd_link_info
*) inf
;
8535 htab
= elf_aarch64_hash_table (info
);
8537 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8538 here if it is defined and referenced in a non-shared object. */
8539 if (h
->type
== STT_GNU_IFUNC
8542 else if (htab
->root
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
8544 /* Make sure this symbol is output as a dynamic symbol.
8545 Undefined weak syms won't yet be marked as dynamic. */
8546 if (h
->dynindx
== -1 && !h
->forced_local
8547 && h
->root
.type
== bfd_link_hash_undefweak
)
8549 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
8553 if (bfd_link_pic (info
) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
8555 asection
*s
= htab
->root
.splt
;
8557 /* If this is the first .plt entry, make room for the special
8560 s
->size
+= htab
->plt_header_size
;
8562 h
->plt
.offset
= s
->size
;
8564 /* If this symbol is not defined in a regular file, and we are
8565 not generating a shared library, then set the symbol to this
8566 location in the .plt. This is required to make function
8567 pointers compare as equal between the normal executable and
8568 the shared library. */
8569 if (!bfd_link_pic (info
) && !h
->def_regular
)
8571 h
->root
.u
.def
.section
= s
;
8572 h
->root
.u
.def
.value
= h
->plt
.offset
;
8575 /* Make room for this entry. For now we only create the
8576 small model PLT entries. We later need to find a way
8577 of relaxing into these from the large model PLT entries. */
8578 s
->size
+= htab
->plt_entry_size
;
8580 /* We also need to make an entry in the .got.plt section, which
8581 will be placed in the .got section by the linker script. */
8582 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
;
8584 /* We also need to make an entry in the .rela.plt section. */
8585 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8587 /* We need to ensure that all GOT entries that serve the PLT
8588 are consecutive with the special GOT slots [0] [1] and
8589 [2]. Any addtional relocations, such as
8590 R_AARCH64_TLSDESC, must be placed after the PLT related
8591 entries. We abuse the reloc_count such that during
8592 sizing we adjust reloc_count to indicate the number of
8593 PLT related reserved entries. In subsequent phases when
8594 filling in the contents of the reloc entries, PLT related
8595 entries are placed by computing their PLT index (0
8596 .. reloc_count). While other none PLT relocs are placed
8597 at the slot indicated by reloc_count and reloc_count is
8600 htab
->root
.srelplt
->reloc_count
++;
8602 /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against
8603 variant PCS symbols are present. */
8604 if (h
->other
& STO_AARCH64_VARIANT_PCS
)
8605 htab
->variant_pcs
= 1;
8610 h
->plt
.offset
= (bfd_vma
) - 1;
8616 h
->plt
.offset
= (bfd_vma
) - 1;
8620 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8621 eh
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8623 if (h
->got
.refcount
> 0)
8626 unsigned got_type
= elf_aarch64_hash_entry (h
)->got_type
;
8628 h
->got
.offset
= (bfd_vma
) - 1;
8630 dyn
= htab
->root
.dynamic_sections_created
;
8632 /* Make sure this symbol is output as a dynamic symbol.
8633 Undefined weak syms won't yet be marked as dynamic. */
8634 if (dyn
&& h
->dynindx
== -1 && !h
->forced_local
8635 && h
->root
.type
== bfd_link_hash_undefweak
)
8637 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
8641 if (got_type
== GOT_UNKNOWN
)
8644 else if (got_type
== GOT_NORMAL
)
8646 h
->got
.offset
= htab
->root
.sgot
->size
;
8647 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8648 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8649 || h
->root
.type
!= bfd_link_hash_undefweak
)
8650 && (bfd_link_pic (info
)
8651 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8652 /* Undefined weak symbol in static PIE resolves to 0 without
8653 any dynamic relocations. */
8654 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8656 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8662 if (got_type
& GOT_TLSDESC_GD
)
8664 eh
->tlsdesc_got_jump_table_offset
=
8665 (htab
->root
.sgotplt
->size
8666 - aarch64_compute_jump_table_size (htab
));
8667 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8668 h
->got
.offset
= (bfd_vma
) - 2;
8671 if (got_type
& GOT_TLS_GD
)
8673 h
->got
.offset
= htab
->root
.sgot
->size
;
8674 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8677 if (got_type
& GOT_TLS_IE
)
8679 h
->got
.offset
= htab
->root
.sgot
->size
;
8680 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8683 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
8684 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8685 || h
->root
.type
!= bfd_link_hash_undefweak
)
8686 && (!bfd_link_executable (info
)
8688 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8690 if (got_type
& GOT_TLSDESC_GD
)
8692 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8693 /* Note reloc_count not incremented here! We have
8694 already adjusted reloc_count for this relocation
8697 /* TLSDESC PLT is now needed, but not yet determined. */
8698 htab
->tlsdesc_plt
= (bfd_vma
) - 1;
8701 if (got_type
& GOT_TLS_GD
)
8702 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
8704 if (got_type
& GOT_TLS_IE
)
8705 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8711 h
->got
.offset
= (bfd_vma
) - 1;
8714 if (eh
->dyn_relocs
== NULL
)
8717 /* In the shared -Bsymbolic case, discard space allocated for
8718 dynamic pc-relative relocs against symbols which turn out to be
8719 defined in regular objects. For the normal shared case, discard
8720 space for pc-relative relocs that have become local due to symbol
8721 visibility changes. */
8723 if (bfd_link_pic (info
))
8725 /* Relocs that use pc_count are those that appear on a call
8726 insn, or certain REL relocs that can generated via assembly.
8727 We want calls to protected symbols to resolve directly to the
8728 function rather than going via the plt. If people want
8729 function pointer comparisons to work as expected then they
8730 should avoid writing weird assembly. */
8731 if (SYMBOL_CALLS_LOCAL (info
, h
))
8733 struct elf_dyn_relocs
**pp
;
8735 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
8737 p
->count
-= p
->pc_count
;
8746 /* Also discard relocs on undefined weak syms with non-default
8748 if (eh
->dyn_relocs
!= NULL
&& h
->root
.type
== bfd_link_hash_undefweak
)
8750 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
8751 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8752 eh
->dyn_relocs
= NULL
;
8754 /* Make sure undefined weak symbols are output as a dynamic
8756 else if (h
->dynindx
== -1
8758 && h
->root
.type
== bfd_link_hash_undefweak
8759 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8764 else if (ELIMINATE_COPY_RELOCS
)
8766 /* For the non-shared case, discard space for relocs against
8767 symbols which turn out to need copy relocs or are not
8773 || (htab
->root
.dynamic_sections_created
8774 && (h
->root
.type
== bfd_link_hash_undefweak
8775 || h
->root
.type
== bfd_link_hash_undefined
))))
8777 /* Make sure this symbol is output as a dynamic symbol.
8778 Undefined weak syms won't yet be marked as dynamic. */
8779 if (h
->dynindx
== -1
8781 && h
->root
.type
== bfd_link_hash_undefweak
8782 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8785 /* If that succeeded, we know we'll be keeping all the
8787 if (h
->dynindx
!= -1)
8791 eh
->dyn_relocs
= NULL
;
8796 /* Finally, allocate space. */
8797 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8801 sreloc
= elf_section_data (p
->sec
)->sreloc
;
8803 BFD_ASSERT (sreloc
!= NULL
);
8805 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
8811 /* Allocate space in .plt, .got and associated reloc sections for
8812 ifunc dynamic relocs. */
8815 elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry
*h
,
8818 struct bfd_link_info
*info
;
8819 struct elf_aarch64_link_hash_table
*htab
;
8820 struct elf_aarch64_link_hash_entry
*eh
;
8822 /* An example of a bfd_link_hash_indirect symbol is versioned
8823 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8824 -> __gxx_personality_v0(bfd_link_hash_defined)
8826 There is no need to process bfd_link_hash_indirect symbols here
8827 because we will also be presented with the concrete instance of
8828 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8829 called to copy all relevant data from the generic to the concrete
8831 if (h
->root
.type
== bfd_link_hash_indirect
)
8834 if (h
->root
.type
== bfd_link_hash_warning
)
8835 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8837 info
= (struct bfd_link_info
*) inf
;
8838 htab
= elf_aarch64_hash_table (info
);
8840 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8842 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8843 here if it is defined and referenced in a non-shared object. */
8844 if (h
->type
== STT_GNU_IFUNC
8846 return _bfd_elf_allocate_ifunc_dyn_relocs (info
, h
,
8849 htab
->plt_entry_size
,
8850 htab
->plt_header_size
,
8856 /* Allocate space in .plt, .got and associated reloc sections for
8857 local ifunc dynamic relocs. */
8860 elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot
, void *inf
)
8862 struct elf_link_hash_entry
*h
8863 = (struct elf_link_hash_entry
*) *slot
;
8865 if (h
->type
!= STT_GNU_IFUNC
8869 || h
->root
.type
!= bfd_link_hash_defined
)
8872 return elfNN_aarch64_allocate_ifunc_dynrelocs (h
, inf
);
8875 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
8876 read-only sections. */
8879 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
8883 if (h
->root
.type
== bfd_link_hash_indirect
)
8886 sec
= readonly_dynrelocs (h
);
8889 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
8891 info
->flags
|= DF_TEXTREL
;
8892 info
->callbacks
->minfo
8893 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
8894 sec
->owner
, h
->root
.root
.string
, sec
);
8896 /* Not an error, just cut short the traversal. */
8902 /* This is the most important function of all . Innocuosly named
8906 elfNN_aarch64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8907 struct bfd_link_info
*info
)
8909 struct elf_aarch64_link_hash_table
*htab
;
8915 htab
= elf_aarch64_hash_table ((info
));
8916 dynobj
= htab
->root
.dynobj
;
8918 BFD_ASSERT (dynobj
!= NULL
);
8920 if (htab
->root
.dynamic_sections_created
)
8922 if (bfd_link_executable (info
) && !info
->nointerp
)
8924 s
= bfd_get_linker_section (dynobj
, ".interp");
8927 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8928 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8932 /* Set up .got offsets for local syms, and space for local dynamic
8934 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8936 struct elf_aarch64_local_symbol
*locals
= NULL
;
8937 Elf_Internal_Shdr
*symtab_hdr
;
8941 if (!is_aarch64_elf (ibfd
))
8944 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8946 struct elf_dyn_relocs
*p
;
8948 for (p
= (struct elf_dyn_relocs
*)
8949 (elf_section_data (s
)->local_dynrel
); p
!= NULL
; p
= p
->next
)
8951 if (!bfd_is_abs_section (p
->sec
)
8952 && bfd_is_abs_section (p
->sec
->output_section
))
8954 /* Input section has been discarded, either because
8955 it is a copy of a linkonce section or due to
8956 linker script /DISCARD/, so we'll be discarding
8959 else if (p
->count
!= 0)
8961 srel
= elf_section_data (p
->sec
)->sreloc
;
8962 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
8963 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8964 info
->flags
|= DF_TEXTREL
;
8969 locals
= elf_aarch64_locals (ibfd
);
8973 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8974 srel
= htab
->root
.srelgot
;
8975 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
8977 locals
[i
].got_offset
= (bfd_vma
) - 1;
8978 locals
[i
].tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8979 if (locals
[i
].got_refcount
> 0)
8981 unsigned got_type
= locals
[i
].got_type
;
8982 if (got_type
& GOT_TLSDESC_GD
)
8984 locals
[i
].tlsdesc_got_jump_table_offset
=
8985 (htab
->root
.sgotplt
->size
8986 - aarch64_compute_jump_table_size (htab
));
8987 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8988 locals
[i
].got_offset
= (bfd_vma
) - 2;
8991 if (got_type
& GOT_TLS_GD
)
8993 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
8994 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8997 if (got_type
& GOT_TLS_IE
8998 || got_type
& GOT_NORMAL
)
9000 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
9001 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
9004 if (got_type
== GOT_UNKNOWN
)
9008 if (bfd_link_pic (info
))
9010 if (got_type
& GOT_TLSDESC_GD
)
9012 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
9013 /* Note RELOC_COUNT not incremented here! */
9014 htab
->tlsdesc_plt
= (bfd_vma
) - 1;
9017 if (got_type
& GOT_TLS_GD
)
9018 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
9020 if (got_type
& GOT_TLS_IE
9021 || got_type
& GOT_NORMAL
)
9022 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
9027 locals
[i
].got_refcount
= (bfd_vma
) - 1;
9033 /* Allocate global sym .plt and .got entries, and space for global
9034 sym dynamic relocs. */
9035 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_dynrelocs
,
9038 /* Allocate global ifunc sym .plt and .got entries, and space for global
9039 ifunc sym dynamic relocs. */
9040 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_ifunc_dynrelocs
,
9043 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
9044 htab_traverse (htab
->loc_hash_table
,
9045 elfNN_aarch64_allocate_local_ifunc_dynrelocs
,
9048 /* For every jump slot reserved in the sgotplt, reloc_count is
9049 incremented. However, when we reserve space for TLS descriptors,
9050 it's not incremented, so in order to compute the space reserved
9051 for them, it suffices to multiply the reloc count by the jump
9054 if (htab
->root
.srelplt
)
9055 htab
->sgotplt_jump_table_size
= aarch64_compute_jump_table_size (htab
);
9057 if (htab
->tlsdesc_plt
)
9059 if (htab
->root
.splt
->size
== 0)
9060 htab
->root
.splt
->size
+= htab
->plt_header_size
;
9062 /* If we're not using lazy TLS relocations, don't generate the
9063 GOT and PLT entry required. */
9064 if (!(info
->flags
& DF_BIND_NOW
))
9066 htab
->tlsdesc_plt
= htab
->root
.splt
->size
;
9067 htab
->root
.splt
->size
+= htab
->tlsdesc_plt_entry_size
;
9069 htab
->dt_tlsdesc_got
= htab
->root
.sgot
->size
;
9070 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
9074 /* Init mapping symbols information to use later to distingush between
9075 code and data while scanning for errata. */
9076 if (htab
->fix_erratum_835769
|| htab
->fix_erratum_843419
)
9077 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9079 if (!is_aarch64_elf (ibfd
))
9081 bfd_elfNN_aarch64_init_maps (ibfd
);
9084 /* We now have determined the sizes of the various dynamic sections.
9085 Allocate memory for them. */
9087 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9089 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9092 if (s
== htab
->root
.splt
9093 || s
== htab
->root
.sgot
9094 || s
== htab
->root
.sgotplt
9095 || s
== htab
->root
.iplt
9096 || s
== htab
->root
.igotplt
9097 || s
== htab
->root
.sdynbss
9098 || s
== htab
->root
.sdynrelro
)
9100 /* Strip this section if we don't need it; see the
9103 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
9105 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
9108 /* We use the reloc_count field as a counter if we need
9109 to copy relocs into the output file. */
9110 if (s
!= htab
->root
.srelplt
)
9115 /* It's not one of our sections, so don't allocate space. */
9121 /* If we don't need this section, strip it from the
9122 output file. This is mostly to handle .rela.bss and
9123 .rela.plt. We must create both sections in
9124 create_dynamic_sections, because they must be created
9125 before the linker maps input sections to output
9126 sections. The linker does that before
9127 adjust_dynamic_symbol is called, and it is that
9128 function which decides whether anything needs to go
9129 into these sections. */
9130 s
->flags
|= SEC_EXCLUDE
;
9134 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9137 /* Allocate memory for the section contents. We use bfd_zalloc
9138 here in case unused entries are not reclaimed before the
9139 section's contents are written out. This should not happen,
9140 but this way if it does, we get a R_AARCH64_NONE reloc instead
9142 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
9143 if (s
->contents
== NULL
)
9147 if (htab
->root
.dynamic_sections_created
)
9149 /* Add some entries to the .dynamic section. We fill in the
9150 values later, in elfNN_aarch64_finish_dynamic_sections, but we
9151 must add the entries now so that we get the correct size for
9152 the .dynamic section. The DT_DEBUG entry is filled in by the
9153 dynamic linker and used by the debugger. */
9154 #define add_dynamic_entry(TAG, VAL) \
9155 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9157 if (bfd_link_executable (info
))
9159 if (!add_dynamic_entry (DT_DEBUG
, 0))
9163 if (htab
->root
.splt
->size
!= 0)
9165 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9166 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9167 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9168 || !add_dynamic_entry (DT_JMPREL
, 0))
9171 if (htab
->variant_pcs
9172 && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS
, 0))
9175 if (htab
->tlsdesc_plt
9176 && !(info
->flags
& DF_BIND_NOW
)
9177 && (!add_dynamic_entry (DT_TLSDESC_PLT
, 0)
9178 || !add_dynamic_entry (DT_TLSDESC_GOT
, 0)))
9181 if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_BTI_PAC
)
9182 && (!add_dynamic_entry (DT_AARCH64_BTI_PLT
, 0)
9183 || !add_dynamic_entry (DT_AARCH64_PAC_PLT
, 0)))
9186 else if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_BTI
)
9187 && !add_dynamic_entry (DT_AARCH64_BTI_PLT
, 0))
9190 else if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_PAC
)
9191 && !add_dynamic_entry (DT_AARCH64_PAC_PLT
, 0))
9197 if (!add_dynamic_entry (DT_RELA
, 0)
9198 || !add_dynamic_entry (DT_RELASZ
, 0)
9199 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
9202 /* If any dynamic relocs apply to a read-only section,
9203 then we need a DT_TEXTREL entry. */
9204 if ((info
->flags
& DF_TEXTREL
) == 0)
9205 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
9207 if ((info
->flags
& DF_TEXTREL
) != 0)
9209 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9214 #undef add_dynamic_entry
9220 elf_aarch64_update_plt_entry (bfd
*output_bfd
,
9221 bfd_reloc_code_real_type r_type
,
9222 bfd_byte
*plt_entry
, bfd_vma value
)
9224 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (r_type
);
9226 /* FIXME: We should check the return value from this function call. */
9227 (void) _bfd_aarch64_elf_put_addend (output_bfd
, plt_entry
, r_type
, howto
, value
);
9231 elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry
*h
,
9232 struct elf_aarch64_link_hash_table
9233 *htab
, bfd
*output_bfd
,
9234 struct bfd_link_info
*info
)
9236 bfd_byte
*plt_entry
;
9239 bfd_vma gotplt_entry_address
;
9240 bfd_vma plt_entry_address
;
9241 Elf_Internal_Rela rela
;
9243 asection
*plt
, *gotplt
, *relplt
;
9245 /* When building a static executable, use .iplt, .igot.plt and
9246 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9247 if (htab
->root
.splt
!= NULL
)
9249 plt
= htab
->root
.splt
;
9250 gotplt
= htab
->root
.sgotplt
;
9251 relplt
= htab
->root
.srelplt
;
9255 plt
= htab
->root
.iplt
;
9256 gotplt
= htab
->root
.igotplt
;
9257 relplt
= htab
->root
.irelplt
;
9260 /* Get the index in the procedure linkage table which
9261 corresponds to this symbol. This is the index of this symbol
9262 in all the symbols for which we are making plt entries. The
9263 first entry in the procedure linkage table is reserved.
9265 Get the offset into the .got table of the entry that
9266 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
9267 bytes. The first three are reserved for the dynamic linker.
9269 For static executables, we don't reserve anything. */
9271 if (plt
== htab
->root
.splt
)
9273 plt_index
= (h
->plt
.offset
- htab
->plt_header_size
) / htab
->plt_entry_size
;
9274 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
9278 plt_index
= h
->plt
.offset
/ htab
->plt_entry_size
;
9279 got_offset
= plt_index
* GOT_ENTRY_SIZE
;
9282 plt_entry
= plt
->contents
+ h
->plt
.offset
;
9283 plt_entry_address
= plt
->output_section
->vma
9284 + plt
->output_offset
+ h
->plt
.offset
;
9285 gotplt_entry_address
= gotplt
->output_section
->vma
+
9286 gotplt
->output_offset
+ got_offset
;
9288 /* Copy in the boiler-plate for the PLTn entry. */
9289 memcpy (plt_entry
, htab
->plt_entry
, htab
->plt_entry_size
);
9291 /* First instruction in BTI enabled PLT stub is a BTI
9292 instruction so skip it. */
9293 if (elf_aarch64_tdata (output_bfd
)->plt_type
& PLT_BTI
9294 && elf_elfheader (output_bfd
)->e_type
== ET_EXEC
)
9295 plt_entry
= plt_entry
+ 4;
9297 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9298 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9299 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9301 PG (gotplt_entry_address
) -
9302 PG (plt_entry_address
));
9304 /* Fill in the lo12 bits for the load from the pltgot. */
9305 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
9307 PG_OFFSET (gotplt_entry_address
));
9309 /* Fill in the lo12 bits for the add from the pltgot entry. */
9310 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
9312 PG_OFFSET (gotplt_entry_address
));
9314 /* All the GOTPLT Entries are essentially initialized to PLT0. */
9315 bfd_put_NN (output_bfd
,
9316 plt
->output_section
->vma
+ plt
->output_offset
,
9317 gotplt
->contents
+ got_offset
);
9319 rela
.r_offset
= gotplt_entry_address
;
9321 if (h
->dynindx
== -1
9322 || ((bfd_link_executable (info
)
9323 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9325 && h
->type
== STT_GNU_IFUNC
))
9327 /* If an STT_GNU_IFUNC symbol is locally defined, generate
9328 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
9329 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
9330 rela
.r_addend
= (h
->root
.u
.def
.value
9331 + h
->root
.u
.def
.section
->output_section
->vma
9332 + h
->root
.u
.def
.section
->output_offset
);
9336 /* Fill in the entry in the .rela.plt section. */
9337 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (JUMP_SLOT
));
9341 /* Compute the relocation entry to used based on PLT index and do
9342 not adjust reloc_count. The reloc_count has already been adjusted
9343 to account for this entry. */
9344 loc
= relplt
->contents
+ plt_index
* RELOC_SIZE (htab
);
9345 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9348 /* Size sections even though they're not dynamic. We use it to setup
9349 _TLS_MODULE_BASE_, if needed. */
9352 elfNN_aarch64_always_size_sections (bfd
*output_bfd
,
9353 struct bfd_link_info
*info
)
9357 if (bfd_link_relocatable (info
))
9360 tls_sec
= elf_hash_table (info
)->tls_sec
;
9364 struct elf_link_hash_entry
*tlsbase
;
9366 tlsbase
= elf_link_hash_lookup (elf_hash_table (info
),
9367 "_TLS_MODULE_BASE_", TRUE
, TRUE
, FALSE
);
9371 struct bfd_link_hash_entry
*h
= NULL
;
9372 const struct elf_backend_data
*bed
=
9373 get_elf_backend_data (output_bfd
);
9375 if (!(_bfd_generic_link_add_one_symbol
9376 (info
, output_bfd
, "_TLS_MODULE_BASE_", BSF_LOCAL
,
9377 tls_sec
, 0, NULL
, FALSE
, bed
->collect
, &h
)))
9380 tlsbase
->type
= STT_TLS
;
9381 tlsbase
= (struct elf_link_hash_entry
*) h
;
9382 tlsbase
->def_regular
= 1;
9383 tlsbase
->other
= STV_HIDDEN
;
9384 (*bed
->elf_backend_hide_symbol
) (info
, tlsbase
, TRUE
);
9391 /* Finish up dynamic symbol handling. We set the contents of various
9392 dynamic sections here. */
9395 elfNN_aarch64_finish_dynamic_symbol (bfd
*output_bfd
,
9396 struct bfd_link_info
*info
,
9397 struct elf_link_hash_entry
*h
,
9398 Elf_Internal_Sym
*sym
)
9400 struct elf_aarch64_link_hash_table
*htab
;
9401 htab
= elf_aarch64_hash_table (info
);
9403 if (h
->plt
.offset
!= (bfd_vma
) - 1)
9405 asection
*plt
, *gotplt
, *relplt
;
9407 /* This symbol has an entry in the procedure linkage table. Set
9410 /* When building a static executable, use .iplt, .igot.plt and
9411 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9412 if (htab
->root
.splt
!= NULL
)
9414 plt
= htab
->root
.splt
;
9415 gotplt
= htab
->root
.sgotplt
;
9416 relplt
= htab
->root
.srelplt
;
9420 plt
= htab
->root
.iplt
;
9421 gotplt
= htab
->root
.igotplt
;
9422 relplt
= htab
->root
.irelplt
;
9425 /* This symbol has an entry in the procedure linkage table. Set
9427 if ((h
->dynindx
== -1
9428 && !((h
->forced_local
|| bfd_link_executable (info
))
9430 && h
->type
== STT_GNU_IFUNC
))
9436 elfNN_aarch64_create_small_pltn_entry (h
, htab
, output_bfd
, info
);
9437 if (!h
->def_regular
)
9439 /* Mark the symbol as undefined, rather than as defined in
9440 the .plt section. */
9441 sym
->st_shndx
= SHN_UNDEF
;
9442 /* If the symbol is weak we need to clear the value.
9443 Otherwise, the PLT entry would provide a definition for
9444 the symbol even if the symbol wasn't defined anywhere,
9445 and so the symbol would never be NULL. Leave the value if
9446 there were any relocations where pointer equality matters
9447 (this is a clue for the dynamic linker, to make function
9448 pointer comparisons work between an application and shared
9450 if (!h
->ref_regular_nonweak
|| !h
->pointer_equality_needed
)
9455 if (h
->got
.offset
!= (bfd_vma
) - 1
9456 && elf_aarch64_hash_entry (h
)->got_type
== GOT_NORMAL
9457 /* Undefined weak symbol in static PIE resolves to 0 without
9458 any dynamic relocations. */
9459 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9461 Elf_Internal_Rela rela
;
9464 /* This symbol has an entry in the global offset table. Set it
9466 if (htab
->root
.sgot
== NULL
|| htab
->root
.srelgot
== NULL
)
9469 rela
.r_offset
= (htab
->root
.sgot
->output_section
->vma
9470 + htab
->root
.sgot
->output_offset
9471 + (h
->got
.offset
& ~(bfd_vma
) 1));
9474 && h
->type
== STT_GNU_IFUNC
)
9476 if (bfd_link_pic (info
))
9478 /* Generate R_AARCH64_GLOB_DAT. */
9485 if (!h
->pointer_equality_needed
)
9488 /* For non-shared object, we can't use .got.plt, which
9489 contains the real function address if we need pointer
9490 equality. We load the GOT entry with the PLT entry. */
9491 plt
= htab
->root
.splt
? htab
->root
.splt
: htab
->root
.iplt
;
9492 bfd_put_NN (output_bfd
, (plt
->output_section
->vma
9493 + plt
->output_offset
9495 htab
->root
.sgot
->contents
9496 + (h
->got
.offset
& ~(bfd_vma
) 1));
9500 else if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
9502 if (!(h
->def_regular
|| ELF_COMMON_DEF_P (h
)))
9505 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
9506 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
9507 rela
.r_addend
= (h
->root
.u
.def
.value
9508 + h
->root
.u
.def
.section
->output_section
->vma
9509 + h
->root
.u
.def
.section
->output_offset
);
9514 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
9515 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
9516 htab
->root
.sgot
->contents
+ h
->got
.offset
);
9517 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (GLOB_DAT
));
9521 loc
= htab
->root
.srelgot
->contents
;
9522 loc
+= htab
->root
.srelgot
->reloc_count
++ * RELOC_SIZE (htab
);
9523 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9528 Elf_Internal_Rela rela
;
9532 /* This symbol needs a copy reloc. Set it up. */
9533 if (h
->dynindx
== -1
9534 || (h
->root
.type
!= bfd_link_hash_defined
9535 && h
->root
.type
!= bfd_link_hash_defweak
)
9536 || htab
->root
.srelbss
== NULL
)
9539 rela
.r_offset
= (h
->root
.u
.def
.value
9540 + h
->root
.u
.def
.section
->output_section
->vma
9541 + h
->root
.u
.def
.section
->output_offset
);
9542 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (COPY
));
9544 if (h
->root
.u
.def
.section
== htab
->root
.sdynrelro
)
9545 s
= htab
->root
.sreldynrelro
;
9547 s
= htab
->root
.srelbss
;
9548 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
9549 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9552 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9553 be NULL for local symbols. */
9555 && (h
== elf_hash_table (info
)->hdynamic
9556 || h
== elf_hash_table (info
)->hgot
))
9557 sym
->st_shndx
= SHN_ABS
;
9562 /* Finish up local dynamic symbol handling. We set the contents of
9563 various dynamic sections here. */
9566 elfNN_aarch64_finish_local_dynamic_symbol (void **slot
, void *inf
)
9568 struct elf_link_hash_entry
*h
9569 = (struct elf_link_hash_entry
*) *slot
;
9570 struct bfd_link_info
*info
9571 = (struct bfd_link_info
*) inf
;
9573 return elfNN_aarch64_finish_dynamic_symbol (info
->output_bfd
,
9578 elfNN_aarch64_init_small_plt0_entry (bfd
*output_bfd ATTRIBUTE_UNUSED
,
9579 struct elf_aarch64_link_hash_table
9582 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9583 small and large plts and at the minute just generates
9586 /* PLT0 of the small PLT looks like this in ELF64 -
9587 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9588 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9589 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9591 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9592 // GOTPLT entry for this.
9594 PLT0 will be slightly different in ELF32 due to different got entry
9596 bfd_vma plt_got_2nd_ent
; /* Address of GOT[2]. */
9600 memcpy (htab
->root
.splt
->contents
, htab
->plt0_entry
,
9601 htab
->plt_header_size
);
9602 elf_section_data (htab
->root
.splt
->output_section
)->this_hdr
.sh_entsize
=
9603 htab
->plt_header_size
;
9605 plt_got_2nd_ent
= (htab
->root
.sgotplt
->output_section
->vma
9606 + htab
->root
.sgotplt
->output_offset
9607 + GOT_ENTRY_SIZE
* 2);
9609 plt_base
= htab
->root
.splt
->output_section
->vma
+
9610 htab
->root
.splt
->output_offset
;
9612 /* First instruction in BTI enabled PLT stub is a BTI
9613 instruction so skip it. */
9614 bfd_byte
*plt0_entry
= htab
->root
.splt
->contents
;
9615 if (elf_aarch64_tdata (output_bfd
)->plt_type
& PLT_BTI
)
9616 plt0_entry
= plt0_entry
+ 4;
9618 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9619 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9620 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9622 PG (plt_got_2nd_ent
) - PG (plt_base
+ 4));
9624 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
9626 PG_OFFSET (plt_got_2nd_ent
));
9628 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
9630 PG_OFFSET (plt_got_2nd_ent
));
9634 elfNN_aarch64_finish_dynamic_sections (bfd
*output_bfd
,
9635 struct bfd_link_info
*info
)
9637 struct elf_aarch64_link_hash_table
*htab
;
9641 htab
= elf_aarch64_hash_table (info
);
9642 dynobj
= htab
->root
.dynobj
;
9643 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
9645 if (htab
->root
.dynamic_sections_created
)
9647 ElfNN_External_Dyn
*dyncon
, *dynconend
;
9649 if (sdyn
== NULL
|| htab
->root
.sgot
== NULL
)
9652 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
9653 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9654 for (; dyncon
< dynconend
; dyncon
++)
9656 Elf_Internal_Dyn dyn
;
9659 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9667 s
= htab
->root
.sgotplt
;
9668 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9672 s
= htab
->root
.srelplt
;
9673 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9677 s
= htab
->root
.srelplt
;
9678 dyn
.d_un
.d_val
= s
->size
;
9681 case DT_TLSDESC_PLT
:
9682 s
= htab
->root
.splt
;
9683 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9684 + htab
->tlsdesc_plt
;
9687 case DT_TLSDESC_GOT
:
9688 s
= htab
->root
.sgot
;
9689 BFD_ASSERT (htab
->dt_tlsdesc_got
!= (bfd_vma
)-1);
9690 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9691 + htab
->dt_tlsdesc_got
;
9695 bfd_elfNN_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9700 /* Fill in the special first entry in the procedure linkage table. */
9701 if (htab
->root
.splt
&& htab
->root
.splt
->size
> 0)
9703 elfNN_aarch64_init_small_plt0_entry (output_bfd
, htab
);
9705 elf_section_data (htab
->root
.splt
->output_section
)->
9706 this_hdr
.sh_entsize
= htab
->plt_entry_size
;
9709 if (htab
->tlsdesc_plt
&& !(info
->flags
& DF_BIND_NOW
))
9711 BFD_ASSERT (htab
->dt_tlsdesc_got
!= (bfd_vma
)-1);
9712 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
9713 htab
->root
.sgot
->contents
+ htab
->dt_tlsdesc_got
);
9715 const bfd_byte
*entry
= elfNN_aarch64_tlsdesc_small_plt_entry
;
9716 htab
->tlsdesc_plt_entry_size
= PLT_TLSDESC_ENTRY_SIZE
;
9718 aarch64_plt_type type
= elf_aarch64_tdata (output_bfd
)->plt_type
;
9719 if (type
== PLT_BTI
|| type
== PLT_BTI_PAC
)
9721 entry
= elfNN_aarch64_tlsdesc_small_plt_bti_entry
;
9724 memcpy (htab
->root
.splt
->contents
+ htab
->tlsdesc_plt
,
9725 entry
, htab
->tlsdesc_plt_entry_size
);
9728 bfd_vma adrp1_addr
=
9729 htab
->root
.splt
->output_section
->vma
9730 + htab
->root
.splt
->output_offset
+ htab
->tlsdesc_plt
+ 4;
9732 bfd_vma adrp2_addr
= adrp1_addr
+ 4;
9735 htab
->root
.sgot
->output_section
->vma
9736 + htab
->root
.sgot
->output_offset
;
9738 bfd_vma pltgot_addr
=
9739 htab
->root
.sgotplt
->output_section
->vma
9740 + htab
->root
.sgotplt
->output_offset
;
9742 bfd_vma dt_tlsdesc_got
= got_addr
+ htab
->dt_tlsdesc_got
;
9744 bfd_byte
*plt_entry
=
9745 htab
->root
.splt
->contents
+ htab
->tlsdesc_plt
;
9747 /* First instruction in BTI enabled PLT stub is a BTI
9748 instruction so skip it. */
9751 plt_entry
= plt_entry
+ 4;
9752 adrp1_addr
= adrp1_addr
+ 4;
9753 adrp2_addr
= adrp2_addr
+ 4;
9756 /* adrp x2, DT_TLSDESC_GOT */
9757 elf_aarch64_update_plt_entry (output_bfd
,
9758 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9760 (PG (dt_tlsdesc_got
)
9761 - PG (adrp1_addr
)));
9764 elf_aarch64_update_plt_entry (output_bfd
,
9765 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9768 - PG (adrp2_addr
)));
9770 /* ldr x2, [x2, #0] */
9771 elf_aarch64_update_plt_entry (output_bfd
,
9772 BFD_RELOC_AARCH64_LDSTNN_LO12
,
9774 PG_OFFSET (dt_tlsdesc_got
));
9777 elf_aarch64_update_plt_entry (output_bfd
,
9778 BFD_RELOC_AARCH64_ADD_LO12
,
9780 PG_OFFSET (pltgot_addr
));
9785 if (htab
->root
.sgotplt
)
9787 if (bfd_is_abs_section (htab
->root
.sgotplt
->output_section
))
9790 (_("discarded output section: `%pA'"), htab
->root
.sgotplt
);
9794 /* Fill in the first three entries in the global offset table. */
9795 if (htab
->root
.sgotplt
->size
> 0)
9797 bfd_put_NN (output_bfd
, (bfd_vma
) 0, htab
->root
.sgotplt
->contents
);
9799 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
9800 bfd_put_NN (output_bfd
,
9802 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
);
9803 bfd_put_NN (output_bfd
,
9805 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
* 2);
9808 if (htab
->root
.sgot
)
9810 if (htab
->root
.sgot
->size
> 0)
9813 sdyn
? sdyn
->output_section
->vma
+ sdyn
->output_offset
: 0;
9814 bfd_put_NN (output_bfd
, addr
, htab
->root
.sgot
->contents
);
9818 elf_section_data (htab
->root
.sgotplt
->output_section
)->
9819 this_hdr
.sh_entsize
= GOT_ENTRY_SIZE
;
9822 if (htab
->root
.sgot
&& htab
->root
.sgot
->size
> 0)
9823 elf_section_data (htab
->root
.sgot
->output_section
)->this_hdr
.sh_entsize
9826 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9827 htab_traverse (htab
->loc_hash_table
,
9828 elfNN_aarch64_finish_local_dynamic_symbol
,
9834 /* Check if BTI enabled PLTs are needed. Returns the type needed. */
9835 static aarch64_plt_type
9836 get_plt_type (bfd
*abfd
)
9838 aarch64_plt_type ret
= PLT_NORMAL
;
9839 bfd_byte
*contents
, *extdyn
, *extdynend
;
9840 asection
*sec
= bfd_get_section_by_name (abfd
, ".dynamic");
9841 if (!sec
|| !bfd_malloc_and_get_section (abfd
, sec
, &contents
))
9844 extdynend
= contents
+ sec
->size
;
9845 for (; extdyn
< extdynend
; extdyn
+= sizeof (ElfNN_External_Dyn
))
9847 Elf_Internal_Dyn dyn
;
9848 bfd_elfNN_swap_dyn_in (abfd
, extdyn
, &dyn
);
9850 /* Let's check the processor specific dynamic array tags. */
9851 bfd_vma tag
= dyn
.d_tag
;
9852 if (tag
< DT_LOPROC
|| tag
> DT_HIPROC
)
9857 case DT_AARCH64_BTI_PLT
:
9861 case DT_AARCH64_PAC_PLT
:
9873 elfNN_aarch64_get_synthetic_symtab (bfd
*abfd
,
9880 elf_aarch64_tdata (abfd
)->plt_type
= get_plt_type (abfd
);
9881 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
9882 dynsymcount
, dynsyms
, ret
);
9885 /* Return address for Ith PLT stub in section PLT, for relocation REL
9886 or (bfd_vma) -1 if it should not be included. */
9889 elfNN_aarch64_plt_sym_val (bfd_vma i
, const asection
*plt
,
9890 const arelent
*rel ATTRIBUTE_UNUSED
)
9892 size_t plt0_size
= PLT_ENTRY_SIZE
;
9893 size_t pltn_size
= PLT_SMALL_ENTRY_SIZE
;
9895 if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_BTI_PAC
)
9897 if (elf_elfheader (plt
->owner
)->e_type
== ET_EXEC
)
9898 pltn_size
= PLT_BTI_PAC_SMALL_ENTRY_SIZE
;
9900 pltn_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
9902 else if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_BTI
)
9904 if (elf_elfheader (plt
->owner
)->e_type
== ET_EXEC
)
9905 pltn_size
= PLT_BTI_SMALL_ENTRY_SIZE
;
9907 else if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_PAC
)
9909 pltn_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
9912 return plt
->vma
+ plt0_size
+ i
* pltn_size
;
9915 /* Returns TRUE if NAME is an AArch64 mapping symbol.
9916 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9917 It also allows a period initiated suffix to be added to the symbol, ie:
9918 "$[adtx]\.[:sym_char]+". */
9921 is_aarch64_mapping_symbol (const char * name
)
9923 return name
!= NULL
/* Paranoia. */
9924 && name
[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9925 the mapping symbols could have acquired a prefix.
9926 We do not support this here, since such symbols no
9927 longer conform to the ARM ELF ABI. */
9928 && (name
[1] == 'd' || name
[1] == 'x')
9929 && (name
[2] == 0 || name
[2] == '.');
9930 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9931 any characters that follow the period are legal characters for the body
9932 of a symbol's name. For now we just assume that this is the case. */
9935 /* Make sure that mapping symbols in object files are not removed via the
9936 "strip --strip-unneeded" tool. These symbols might needed in order to
9937 correctly generate linked files. Once an object file has been linked,
9938 it should be safe to remove them. */
9941 elfNN_aarch64_backend_symbol_processing (bfd
*abfd
, asymbol
*sym
)
9943 if (((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0)
9944 && sym
->section
!= bfd_abs_section_ptr
9945 && is_aarch64_mapping_symbol (sym
->name
))
9946 sym
->flags
|= BSF_KEEP
;
9949 /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a
9950 wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account
9951 for the effect of GNU properties of the output_bfd. */
9953 elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info
*info
)
9955 uint32_t prop
= elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
;
9956 bfd
*pbfd
= _bfd_aarch64_elf_link_setup_gnu_properties (info
, &prop
);
9957 elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
= prop
;
9958 elf_aarch64_tdata (info
->output_bfd
)->plt_type
9959 |= (prop
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
) ? PLT_BTI
: 0;
9960 setup_plt_values (info
, elf_aarch64_tdata (info
->output_bfd
)->plt_type
);
9964 /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a
9965 wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account
9966 for the effect of GNU properties of the output_bfd. */
9968 elfNN_aarch64_merge_gnu_properties (struct bfd_link_info
*info
,
9969 bfd
*abfd
, bfd
*bbfd
,
9970 elf_property
*aprop
,
9971 elf_property
*bprop
)
9974 = elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
;
9976 /* If output has been marked with BTI using command line argument, give out
9977 warning if necessary. */
9978 /* Properties are merged per type, hence only check for warnings when merging
9979 GNU_PROPERTY_AARCH64_FEATURE_1_AND. */
9980 if (((aprop
&& aprop
->pr_type
== GNU_PROPERTY_AARCH64_FEATURE_1_AND
)
9981 || (bprop
&& bprop
->pr_type
== GNU_PROPERTY_AARCH64_FEATURE_1_AND
))
9982 && (prop
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
)
9983 && (!elf_aarch64_tdata (info
->output_bfd
)->no_bti_warn
))
9985 if ((aprop
&& !(aprop
->u
.number
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
))
9988 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
9989 "all inputs do not have BTI in NOTE section."),
9992 if ((bprop
&& !(bprop
->u
.number
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
))
9995 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
9996 "all inputs do not have BTI in NOTE section."),
10001 return _bfd_aarch64_elf_merge_gnu_properties (info
, abfd
, aprop
,
10005 /* We use this so we can override certain functions
10006 (though currently we don't). */
10008 const struct elf_size_info elfNN_aarch64_size_info
=
10010 sizeof (ElfNN_External_Ehdr
),
10011 sizeof (ElfNN_External_Phdr
),
10012 sizeof (ElfNN_External_Shdr
),
10013 sizeof (ElfNN_External_Rel
),
10014 sizeof (ElfNN_External_Rela
),
10015 sizeof (ElfNN_External_Sym
),
10016 sizeof (ElfNN_External_Dyn
),
10017 sizeof (Elf_External_Note
),
10018 4, /* Hash table entry size. */
10019 1, /* Internal relocs per external relocs. */
10020 ARCH_SIZE
, /* Arch size. */
10021 LOG_FILE_ALIGN
, /* Log_file_align. */
10022 ELFCLASSNN
, EV_CURRENT
,
10023 bfd_elfNN_write_out_phdrs
,
10024 bfd_elfNN_write_shdrs_and_ehdr
,
10025 bfd_elfNN_checksum_contents
,
10026 bfd_elfNN_write_relocs
,
10027 bfd_elfNN_swap_symbol_in
,
10028 bfd_elfNN_swap_symbol_out
,
10029 bfd_elfNN_slurp_reloc_table
,
10030 bfd_elfNN_slurp_symbol_table
,
10031 bfd_elfNN_swap_dyn_in
,
10032 bfd_elfNN_swap_dyn_out
,
10033 bfd_elfNN_swap_reloc_in
,
10034 bfd_elfNN_swap_reloc_out
,
10035 bfd_elfNN_swap_reloca_in
,
10036 bfd_elfNN_swap_reloca_out
10039 #define ELF_ARCH bfd_arch_aarch64
10040 #define ELF_MACHINE_CODE EM_AARCH64
10041 #define ELF_MAXPAGESIZE 0x10000
10042 #define ELF_MINPAGESIZE 0x1000
10043 #define ELF_COMMONPAGESIZE 0x1000
10045 #define bfd_elfNN_close_and_cleanup \
10046 elfNN_aarch64_close_and_cleanup
10048 #define bfd_elfNN_bfd_free_cached_info \
10049 elfNN_aarch64_bfd_free_cached_info
10051 #define bfd_elfNN_bfd_is_target_special_symbol \
10052 elfNN_aarch64_is_target_special_symbol
10054 #define bfd_elfNN_bfd_link_hash_table_create \
10055 elfNN_aarch64_link_hash_table_create
10057 #define bfd_elfNN_bfd_merge_private_bfd_data \
10058 elfNN_aarch64_merge_private_bfd_data
10060 #define bfd_elfNN_bfd_print_private_bfd_data \
10061 elfNN_aarch64_print_private_bfd_data
10063 #define bfd_elfNN_bfd_reloc_type_lookup \
10064 elfNN_aarch64_reloc_type_lookup
10066 #define bfd_elfNN_bfd_reloc_name_lookup \
10067 elfNN_aarch64_reloc_name_lookup
10069 #define bfd_elfNN_bfd_set_private_flags \
10070 elfNN_aarch64_set_private_flags
10072 #define bfd_elfNN_find_inliner_info \
10073 elfNN_aarch64_find_inliner_info
10075 #define bfd_elfNN_get_synthetic_symtab \
10076 elfNN_aarch64_get_synthetic_symtab
10078 #define bfd_elfNN_mkobject \
10079 elfNN_aarch64_mkobject
10081 #define bfd_elfNN_new_section_hook \
10082 elfNN_aarch64_new_section_hook
10084 #define elf_backend_adjust_dynamic_symbol \
10085 elfNN_aarch64_adjust_dynamic_symbol
10087 #define elf_backend_always_size_sections \
10088 elfNN_aarch64_always_size_sections
10090 #define elf_backend_check_relocs \
10091 elfNN_aarch64_check_relocs
10093 #define elf_backend_copy_indirect_symbol \
10094 elfNN_aarch64_copy_indirect_symbol
10096 #define elf_backend_merge_symbol_attribute \
10097 elfNN_aarch64_merge_symbol_attribute
10099 /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
10100 to them in our hash. */
10101 #define elf_backend_create_dynamic_sections \
10102 elfNN_aarch64_create_dynamic_sections
10104 #define elf_backend_init_index_section \
10105 _bfd_elf_init_2_index_sections
10107 #define elf_backend_finish_dynamic_sections \
10108 elfNN_aarch64_finish_dynamic_sections
10110 #define elf_backend_finish_dynamic_symbol \
10111 elfNN_aarch64_finish_dynamic_symbol
10113 #define elf_backend_object_p \
10114 elfNN_aarch64_object_p
10116 #define elf_backend_output_arch_local_syms \
10117 elfNN_aarch64_output_arch_local_syms
10119 #define elf_backend_maybe_function_sym \
10120 elfNN_aarch64_maybe_function_sym
10122 #define elf_backend_plt_sym_val \
10123 elfNN_aarch64_plt_sym_val
10125 #define elf_backend_init_file_header \
10126 elfNN_aarch64_init_file_header
10128 #define elf_backend_relocate_section \
10129 elfNN_aarch64_relocate_section
10131 #define elf_backend_reloc_type_class \
10132 elfNN_aarch64_reloc_type_class
10134 #define elf_backend_section_from_shdr \
10135 elfNN_aarch64_section_from_shdr
10137 #define elf_backend_size_dynamic_sections \
10138 elfNN_aarch64_size_dynamic_sections
10140 #define elf_backend_size_info \
10141 elfNN_aarch64_size_info
10143 #define elf_backend_write_section \
10144 elfNN_aarch64_write_section
10146 #define elf_backend_symbol_processing \
10147 elfNN_aarch64_backend_symbol_processing
10149 #define elf_backend_setup_gnu_properties \
10150 elfNN_aarch64_link_setup_gnu_properties
10152 #define elf_backend_merge_gnu_properties \
10153 elfNN_aarch64_merge_gnu_properties
10155 #define elf_backend_can_refcount 1
10156 #define elf_backend_can_gc_sections 1
10157 #define elf_backend_plt_readonly 1
10158 #define elf_backend_want_got_plt 1
10159 #define elf_backend_want_plt_sym 0
10160 #define elf_backend_want_dynrelro 1
10161 #define elf_backend_may_use_rel_p 0
10162 #define elf_backend_may_use_rela_p 1
10163 #define elf_backend_default_use_rela_p 1
10164 #define elf_backend_rela_normal 1
10165 #define elf_backend_dtrel_excludes_plt 1
10166 #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
10167 #define elf_backend_default_execstack 0
10168 #define elf_backend_extern_protected_data 1
10169 #define elf_backend_hash_symbol elf_aarch64_hash_symbol
10171 #undef elf_backend_obj_attrs_section
10172 #define elf_backend_obj_attrs_section ".ARM.attributes"
10174 #include "elfNN-target.h"
10176 /* CloudABI support. */
10178 #undef TARGET_LITTLE_SYM
10179 #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
10180 #undef TARGET_LITTLE_NAME
10181 #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
10182 #undef TARGET_BIG_SYM
10183 #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
10184 #undef TARGET_BIG_NAME
10185 #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
10188 #define ELF_OSABI ELFOSABI_CLOUDABI
10191 #define elfNN_bed elfNN_aarch64_cloudabi_bed
10193 #include "elfNN-target.h"