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 /* Since PLT entries have variable size, we need to record the
2574 index into .got.plt instead of recomputing it from the PLT
2576 bfd_signed_vma plt_got_offset
;
2578 /* Bit mask representing the type of GOT entry(s) if any required by
2580 unsigned int got_type
;
2582 /* A pointer to the most recently used stub hash entry against this
2584 struct elf_aarch64_stub_hash_entry
*stub_cache
;
2586 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2587 is from the end of the jump table and reserved entries within the PLTGOT.
2589 The magic value (bfd_vma) -1 indicates that an offset has not
2591 bfd_vma tlsdesc_got_jump_table_offset
;
2595 elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry
*h
,
2597 unsigned long r_symndx
)
2600 return elf_aarch64_hash_entry (h
)->got_type
;
2602 if (! elf_aarch64_locals (abfd
))
2605 return elf_aarch64_locals (abfd
)[r_symndx
].got_type
;
2608 /* Get the AArch64 elf linker hash table from a link_info structure. */
2609 #define elf_aarch64_hash_table(info) \
2610 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
2612 #define aarch64_stub_hash_lookup(table, string, create, copy) \
2613 ((struct elf_aarch64_stub_hash_entry *) \
2614 bfd_hash_lookup ((table), (string), (create), (copy)))
2616 /* AArch64 ELF linker hash table. */
2617 struct elf_aarch64_link_hash_table
2619 /* The main hash table. */
2620 struct elf_link_hash_table root
;
2622 /* Nonzero to force PIC branch veneers. */
2625 /* Fix erratum 835769. */
2626 int fix_erratum_835769
;
2628 /* Fix erratum 843419. */
2629 erratum_84319_opts fix_erratum_843419
;
2631 /* Don't apply link-time values for dynamic relocations. */
2632 int no_apply_dynamic_relocs
;
2634 /* The number of bytes in the initial entry in the PLT. */
2635 bfd_size_type plt_header_size
;
2637 /* The bytes of the initial PLT entry. */
2638 const bfd_byte
*plt0_entry
;
2640 /* The number of bytes in the subsequent PLT entries. */
2641 bfd_size_type plt_entry_size
;
2643 /* The bytes of the subsequent PLT entry. */
2644 const bfd_byte
*plt_entry
;
2646 /* For convenience in allocate_dynrelocs. */
2649 /* The amount of space used by the reserved portion of the sgotplt
2650 section, plus whatever space is used by the jump slots. */
2651 bfd_vma sgotplt_jump_table_size
;
2653 /* The stub hash table. */
2654 struct bfd_hash_table stub_hash_table
;
2656 /* Linker stub bfd. */
2659 /* Linker call-backs. */
2660 asection
*(*add_stub_section
) (const char *, asection
*);
2661 void (*layout_sections_again
) (void);
2663 /* Array to keep track of which stub sections have been created, and
2664 information on stub grouping. */
2667 /* This is the section to which stubs in the group will be
2670 /* The stub section. */
2674 /* Assorted information used by elfNN_aarch64_size_stubs. */
2675 unsigned int bfd_count
;
2676 unsigned int top_index
;
2677 asection
**input_list
;
2679 /* JUMP_SLOT relocs for variant PCS symbols may be present. */
2682 /* The number of bytes in the PLT enty for the TLS descriptor. */
2683 bfd_size_type tlsdesc_plt_entry_size
;
2685 /* Used by local STT_GNU_IFUNC symbols. */
2686 htab_t loc_hash_table
;
2687 void * loc_hash_memory
;
2690 /* Create an entry in an AArch64 ELF linker hash table. */
2692 static struct bfd_hash_entry
*
2693 elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2694 struct bfd_hash_table
*table
,
2697 struct elf_aarch64_link_hash_entry
*ret
=
2698 (struct elf_aarch64_link_hash_entry
*) entry
;
2700 /* Allocate the structure if it has not already been allocated by a
2703 ret
= bfd_hash_allocate (table
,
2704 sizeof (struct elf_aarch64_link_hash_entry
));
2706 return (struct bfd_hash_entry
*) ret
;
2708 /* Call the allocation method of the superclass. */
2709 ret
= ((struct elf_aarch64_link_hash_entry
*)
2710 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2714 ret
->got_type
= GOT_UNKNOWN
;
2715 ret
->plt_got_offset
= (bfd_vma
) - 1;
2716 ret
->stub_cache
= NULL
;
2717 ret
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
2720 return (struct bfd_hash_entry
*) ret
;
2723 /* Initialize an entry in the stub hash table. */
2725 static struct bfd_hash_entry
*
2726 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2727 struct bfd_hash_table
*table
, const char *string
)
2729 /* Allocate the structure if it has not already been allocated by a
2733 entry
= bfd_hash_allocate (table
,
2735 elf_aarch64_stub_hash_entry
));
2740 /* Call the allocation method of the superclass. */
2741 entry
= bfd_hash_newfunc (entry
, table
, string
);
2744 struct elf_aarch64_stub_hash_entry
*eh
;
2746 /* Initialize the local fields. */
2747 eh
= (struct elf_aarch64_stub_hash_entry
*) entry
;
2748 eh
->adrp_offset
= 0;
2749 eh
->stub_sec
= NULL
;
2750 eh
->stub_offset
= 0;
2751 eh
->target_value
= 0;
2752 eh
->target_section
= NULL
;
2753 eh
->stub_type
= aarch64_stub_none
;
2761 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
2762 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2763 as global symbol. We reuse indx and dynstr_index for local symbol
2764 hash since they aren't used by global symbols in this backend. */
2767 elfNN_aarch64_local_htab_hash (const void *ptr
)
2769 struct elf_link_hash_entry
*h
2770 = (struct elf_link_hash_entry
*) ptr
;
2771 return ELF_LOCAL_SYMBOL_HASH (h
->indx
, h
->dynstr_index
);
2774 /* Compare local hash entries. */
2777 elfNN_aarch64_local_htab_eq (const void *ptr1
, const void *ptr2
)
2779 struct elf_link_hash_entry
*h1
2780 = (struct elf_link_hash_entry
*) ptr1
;
2781 struct elf_link_hash_entry
*h2
2782 = (struct elf_link_hash_entry
*) ptr2
;
2784 return h1
->indx
== h2
->indx
&& h1
->dynstr_index
== h2
->dynstr_index
;
2787 /* Find and/or create a hash entry for local symbol. */
2789 static struct elf_link_hash_entry
*
2790 elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table
*htab
,
2791 bfd
*abfd
, const Elf_Internal_Rela
*rel
,
2794 struct elf_aarch64_link_hash_entry e
, *ret
;
2795 asection
*sec
= abfd
->sections
;
2796 hashval_t h
= ELF_LOCAL_SYMBOL_HASH (sec
->id
,
2797 ELFNN_R_SYM (rel
->r_info
));
2800 e
.root
.indx
= sec
->id
;
2801 e
.root
.dynstr_index
= ELFNN_R_SYM (rel
->r_info
);
2802 slot
= htab_find_slot_with_hash (htab
->loc_hash_table
, &e
, h
,
2803 create
? INSERT
: NO_INSERT
);
2810 ret
= (struct elf_aarch64_link_hash_entry
*) *slot
;
2814 ret
= (struct elf_aarch64_link_hash_entry
*)
2815 objalloc_alloc ((struct objalloc
*) htab
->loc_hash_memory
,
2816 sizeof (struct elf_aarch64_link_hash_entry
));
2819 memset (ret
, 0, sizeof (*ret
));
2820 ret
->root
.indx
= sec
->id
;
2821 ret
->root
.dynstr_index
= ELFNN_R_SYM (rel
->r_info
);
2822 ret
->root
.dynindx
= -1;
2828 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2831 elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info
*info
,
2832 struct elf_link_hash_entry
*dir
,
2833 struct elf_link_hash_entry
*ind
)
2835 struct elf_aarch64_link_hash_entry
*edir
, *eind
;
2837 edir
= (struct elf_aarch64_link_hash_entry
*) dir
;
2838 eind
= (struct elf_aarch64_link_hash_entry
*) ind
;
2840 if (ind
->root
.type
== bfd_link_hash_indirect
)
2842 /* Copy over PLT info. */
2843 if (dir
->got
.refcount
<= 0)
2845 edir
->got_type
= eind
->got_type
;
2846 eind
->got_type
= GOT_UNKNOWN
;
2850 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2853 /* Merge non-visibility st_other attributes. */
2856 elfNN_aarch64_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
2857 const Elf_Internal_Sym
*isym
,
2858 bfd_boolean definition ATTRIBUTE_UNUSED
,
2859 bfd_boolean dynamic ATTRIBUTE_UNUSED
)
2861 unsigned int isym_sto
= isym
->st_other
& ~ELF_ST_VISIBILITY (-1);
2862 unsigned int h_sto
= h
->other
& ~ELF_ST_VISIBILITY (-1);
2864 if (isym_sto
== h_sto
)
2867 if (isym_sto
& ~STO_AARCH64_VARIANT_PCS
)
2868 /* Not fatal, this callback cannot fail. */
2869 _bfd_error_handler (_("unknown attribute for symbol `%s': 0x%02x"),
2870 h
->root
.root
.string
, isym_sto
);
2872 /* Note: Ideally we would warn about any attribute mismatch, but
2873 this api does not allow that without substantial changes. */
2874 if (isym_sto
& STO_AARCH64_VARIANT_PCS
)
2875 h
->other
|= STO_AARCH64_VARIANT_PCS
;
2878 /* Destroy an AArch64 elf linker hash table. */
2881 elfNN_aarch64_link_hash_table_free (bfd
*obfd
)
2883 struct elf_aarch64_link_hash_table
*ret
2884 = (struct elf_aarch64_link_hash_table
*) obfd
->link
.hash
;
2886 if (ret
->loc_hash_table
)
2887 htab_delete (ret
->loc_hash_table
);
2888 if (ret
->loc_hash_memory
)
2889 objalloc_free ((struct objalloc
*) ret
->loc_hash_memory
);
2891 bfd_hash_table_free (&ret
->stub_hash_table
);
2892 _bfd_elf_link_hash_table_free (obfd
);
2895 /* Create an AArch64 elf linker hash table. */
2897 static struct bfd_link_hash_table
*
2898 elfNN_aarch64_link_hash_table_create (bfd
*abfd
)
2900 struct elf_aarch64_link_hash_table
*ret
;
2901 size_t amt
= sizeof (struct elf_aarch64_link_hash_table
);
2903 ret
= bfd_zmalloc (amt
);
2907 if (!_bfd_elf_link_hash_table_init
2908 (&ret
->root
, abfd
, elfNN_aarch64_link_hash_newfunc
,
2909 sizeof (struct elf_aarch64_link_hash_entry
), AARCH64_ELF_DATA
))
2915 ret
->plt_header_size
= PLT_ENTRY_SIZE
;
2916 ret
->plt0_entry
= elfNN_aarch64_small_plt0_entry
;
2917 ret
->plt_entry_size
= PLT_SMALL_ENTRY_SIZE
;
2918 ret
->plt_entry
= elfNN_aarch64_small_plt_entry
;
2919 ret
->tlsdesc_plt_entry_size
= PLT_TLSDESC_ENTRY_SIZE
;
2921 ret
->root
.tlsdesc_got
= (bfd_vma
) - 1;
2923 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
,
2924 sizeof (struct elf_aarch64_stub_hash_entry
)))
2926 _bfd_elf_link_hash_table_free (abfd
);
2930 ret
->loc_hash_table
= htab_try_create (1024,
2931 elfNN_aarch64_local_htab_hash
,
2932 elfNN_aarch64_local_htab_eq
,
2934 ret
->loc_hash_memory
= objalloc_create ();
2935 if (!ret
->loc_hash_table
|| !ret
->loc_hash_memory
)
2937 elfNN_aarch64_link_hash_table_free (abfd
);
2940 ret
->root
.root
.hash_table_free
= elfNN_aarch64_link_hash_table_free
;
2942 return &ret
->root
.root
;
2945 /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */
2948 aarch64_relocate (unsigned int r_type
, bfd
*input_bfd
, asection
*input_section
,
2949 bfd_vma offset
, bfd_vma value
)
2951 reloc_howto_type
*howto
;
2954 howto
= elfNN_aarch64_howto_from_type (input_bfd
, r_type
);
2955 place
= (input_section
->output_section
->vma
+ input_section
->output_offset
2958 r_type
= elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
2959 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, r_type
, place
,
2961 return _bfd_aarch64_elf_put_addend (input_bfd
,
2962 input_section
->contents
+ offset
, r_type
,
2963 howto
, value
) == bfd_reloc_ok
;
2966 static enum elf_aarch64_stub_type
2967 aarch64_select_branch_stub (bfd_vma value
, bfd_vma place
)
2969 if (aarch64_valid_for_adrp_p (value
, place
))
2970 return aarch64_stub_adrp_branch
;
2971 return aarch64_stub_long_branch
;
2974 /* Determine the type of stub needed, if any, for a call. */
2976 static enum elf_aarch64_stub_type
2977 aarch64_type_of_stub (asection
*input_sec
,
2978 const Elf_Internal_Rela
*rel
,
2980 unsigned char st_type
,
2981 bfd_vma destination
)
2984 bfd_signed_vma branch_offset
;
2985 unsigned int r_type
;
2986 enum elf_aarch64_stub_type stub_type
= aarch64_stub_none
;
2988 if (st_type
!= STT_FUNC
2989 && (sym_sec
== input_sec
))
2992 /* Determine where the call point is. */
2993 location
= (input_sec
->output_offset
2994 + input_sec
->output_section
->vma
+ rel
->r_offset
);
2996 branch_offset
= (bfd_signed_vma
) (destination
- location
);
2998 r_type
= ELFNN_R_TYPE (rel
->r_info
);
3000 /* We don't want to redirect any old unconditional jump in this way,
3001 only one which is being used for a sibcall, where it is
3002 acceptable for the IP0 and IP1 registers to be clobbered. */
3003 if ((r_type
== AARCH64_R (CALL26
) || r_type
== AARCH64_R (JUMP26
))
3004 && (branch_offset
> AARCH64_MAX_FWD_BRANCH_OFFSET
3005 || branch_offset
< AARCH64_MAX_BWD_BRANCH_OFFSET
))
3007 stub_type
= aarch64_stub_long_branch
;
3013 /* Build a name for an entry in the stub hash table. */
3016 elfNN_aarch64_stub_name (const asection
*input_section
,
3017 const asection
*sym_sec
,
3018 const struct elf_aarch64_link_hash_entry
*hash
,
3019 const Elf_Internal_Rela
*rel
)
3026 len
= 8 + 1 + strlen (hash
->root
.root
.root
.string
) + 1 + 16 + 1;
3027 stub_name
= bfd_malloc (len
);
3028 if (stub_name
!= NULL
)
3029 snprintf (stub_name
, len
, "%08x_%s+%" BFD_VMA_FMT
"x",
3030 (unsigned int) input_section
->id
,
3031 hash
->root
.root
.root
.string
,
3036 len
= 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
3037 stub_name
= bfd_malloc (len
);
3038 if (stub_name
!= NULL
)
3039 snprintf (stub_name
, len
, "%08x_%x:%x+%" BFD_VMA_FMT
"x",
3040 (unsigned int) input_section
->id
,
3041 (unsigned int) sym_sec
->id
,
3042 (unsigned int) ELFNN_R_SYM (rel
->r_info
),
3049 /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For
3050 executable PLT slots where the executable never takes the address of those
3051 functions, the function symbols are not added to the hash table. */
3054 elf_aarch64_hash_symbol (struct elf_link_hash_entry
*h
)
3056 if (h
->plt
.offset
!= (bfd_vma
) -1
3058 && !h
->pointer_equality_needed
)
3061 return _bfd_elf_hash_symbol (h
);
3065 /* Look up an entry in the stub hash. Stub entries are cached because
3066 creating the stub name takes a bit of time. */
3068 static struct elf_aarch64_stub_hash_entry
*
3069 elfNN_aarch64_get_stub_entry (const asection
*input_section
,
3070 const asection
*sym_sec
,
3071 struct elf_link_hash_entry
*hash
,
3072 const Elf_Internal_Rela
*rel
,
3073 struct elf_aarch64_link_hash_table
*htab
)
3075 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3076 struct elf_aarch64_link_hash_entry
*h
=
3077 (struct elf_aarch64_link_hash_entry
*) hash
;
3078 const asection
*id_sec
;
3080 if ((input_section
->flags
& SEC_CODE
) == 0)
3083 /* If this input section is part of a group of sections sharing one
3084 stub section, then use the id of the first section in the group.
3085 Stub names need to include a section id, as there may well be
3086 more than one stub used to reach say, printf, and we need to
3087 distinguish between them. */
3088 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3090 if (h
!= NULL
&& h
->stub_cache
!= NULL
3091 && h
->stub_cache
->h
== h
&& h
->stub_cache
->id_sec
== id_sec
)
3093 stub_entry
= h
->stub_cache
;
3099 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, h
, rel
);
3100 if (stub_name
== NULL
)
3103 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
3104 stub_name
, FALSE
, FALSE
);
3106 h
->stub_cache
= stub_entry
;
3115 /* Create a stub section. */
3118 _bfd_aarch64_create_stub_section (asection
*section
,
3119 struct elf_aarch64_link_hash_table
*htab
)
3125 namelen
= strlen (section
->name
);
3126 len
= namelen
+ sizeof (STUB_SUFFIX
);
3127 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3131 memcpy (s_name
, section
->name
, namelen
);
3132 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3133 return (*htab
->add_stub_section
) (s_name
, section
);
3137 /* Find or create a stub section for a link section.
3139 Fix or create the stub section used to collect stubs attached to
3140 the specified link section. */
3143 _bfd_aarch64_get_stub_for_link_section (asection
*link_section
,
3144 struct elf_aarch64_link_hash_table
*htab
)
3146 if (htab
->stub_group
[link_section
->id
].stub_sec
== NULL
)
3147 htab
->stub_group
[link_section
->id
].stub_sec
3148 = _bfd_aarch64_create_stub_section (link_section
, htab
);
3149 return htab
->stub_group
[link_section
->id
].stub_sec
;
3153 /* Find or create a stub section in the stub group for an input
3157 _bfd_aarch64_create_or_find_stub_sec (asection
*section
,
3158 struct elf_aarch64_link_hash_table
*htab
)
3160 asection
*link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3161 return _bfd_aarch64_get_stub_for_link_section (link_sec
, htab
);
3165 /* Add a new stub entry in the stub group associated with an input
3166 section to the stub hash. Not all fields of the new stub entry are
3169 static struct elf_aarch64_stub_hash_entry
*
3170 _bfd_aarch64_add_stub_entry_in_group (const char *stub_name
,
3172 struct elf_aarch64_link_hash_table
*htab
)
3176 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3178 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3179 stub_sec
= _bfd_aarch64_create_or_find_stub_sec (section
, htab
);
3181 /* Enter this entry into the linker stub hash table. */
3182 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3184 if (stub_entry
== NULL
)
3186 /* xgettext:c-format */
3187 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
3188 section
->owner
, stub_name
);
3192 stub_entry
->stub_sec
= stub_sec
;
3193 stub_entry
->stub_offset
= 0;
3194 stub_entry
->id_sec
= link_sec
;
3199 /* Add a new stub entry in the final stub section to the stub hash.
3200 Not all fields of the new stub entry are initialised. */
3202 static struct elf_aarch64_stub_hash_entry
*
3203 _bfd_aarch64_add_stub_entry_after (const char *stub_name
,
3204 asection
*link_section
,
3205 struct elf_aarch64_link_hash_table
*htab
)
3208 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3211 /* Only create the actual stub if we will end up needing it. */
3212 if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
3213 stub_sec
= _bfd_aarch64_get_stub_for_link_section (link_section
, htab
);
3214 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3216 if (stub_entry
== NULL
)
3218 _bfd_error_handler (_("cannot create stub entry %s"), stub_name
);
3222 stub_entry
->stub_sec
= stub_sec
;
3223 stub_entry
->stub_offset
= 0;
3224 stub_entry
->id_sec
= link_section
;
3231 aarch64_build_one_stub (struct bfd_hash_entry
*gen_entry
,
3234 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3239 bfd_vma veneered_insn_loc
;
3240 bfd_vma veneer_entry_loc
;
3241 bfd_signed_vma branch_offset
= 0;
3242 unsigned int template_size
;
3243 const uint32_t *template;
3245 struct bfd_link_info
*info
;
3247 /* Massage our args to the form they really have. */
3248 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
3250 info
= (struct bfd_link_info
*) in_arg
;
3252 /* Fail if the target section could not be assigned to an output
3253 section. The user should fix his linker script. */
3254 if (stub_entry
->target_section
->output_section
== NULL
3255 && info
->non_contiguous_regions
)
3256 info
->callbacks
->einfo (_("%F%P: Could not assign '%pA' to an output section. "
3258 "--enable-non-contiguous-regions.\n"),
3259 stub_entry
->target_section
);
3261 stub_sec
= stub_entry
->stub_sec
;
3263 /* Make a note of the offset within the stubs for this entry. */
3264 stub_entry
->stub_offset
= stub_sec
->size
;
3265 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
3267 stub_bfd
= stub_sec
->owner
;
3269 /* This is the address of the stub destination. */
3270 sym_value
= (stub_entry
->target_value
3271 + stub_entry
->target_section
->output_offset
3272 + stub_entry
->target_section
->output_section
->vma
);
3274 if (stub_entry
->stub_type
== aarch64_stub_long_branch
)
3276 bfd_vma place
= (stub_entry
->stub_offset
+ stub_sec
->output_section
->vma
3277 + stub_sec
->output_offset
);
3279 /* See if we can relax the stub. */
3280 if (aarch64_valid_for_adrp_p (sym_value
, place
))
3281 stub_entry
->stub_type
= aarch64_select_branch_stub (sym_value
, place
);
3284 switch (stub_entry
->stub_type
)
3286 case aarch64_stub_adrp_branch
:
3287 template = aarch64_adrp_branch_stub
;
3288 template_size
= sizeof (aarch64_adrp_branch_stub
);
3290 case aarch64_stub_long_branch
:
3291 template = aarch64_long_branch_stub
;
3292 template_size
= sizeof (aarch64_long_branch_stub
);
3294 case aarch64_stub_erratum_835769_veneer
:
3295 template = aarch64_erratum_835769_stub
;
3296 template_size
= sizeof (aarch64_erratum_835769_stub
);
3298 case aarch64_stub_erratum_843419_veneer
:
3299 template = aarch64_erratum_843419_stub
;
3300 template_size
= sizeof (aarch64_erratum_843419_stub
);
3306 for (i
= 0; i
< (template_size
/ sizeof template[0]); i
++)
3308 bfd_putl32 (template[i
], loc
);
3312 template_size
= (template_size
+ 7) & ~7;
3313 stub_sec
->size
+= template_size
;
3315 switch (stub_entry
->stub_type
)
3317 case aarch64_stub_adrp_branch
:
3318 if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21
), stub_bfd
, stub_sec
,
3319 stub_entry
->stub_offset
, sym_value
))
3320 /* The stub would not have been relaxed if the offset was out
3324 if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC
), stub_bfd
, stub_sec
,
3325 stub_entry
->stub_offset
+ 4, sym_value
))
3329 case aarch64_stub_long_branch
:
3330 /* We want the value relative to the address 12 bytes back from the
3332 if (!aarch64_relocate (AARCH64_R (PRELNN
), stub_bfd
, stub_sec
,
3333 stub_entry
->stub_offset
+ 16, sym_value
+ 12))
3337 case aarch64_stub_erratum_835769_veneer
:
3338 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
3339 + stub_entry
->target_section
->output_offset
3340 + stub_entry
->target_value
;
3341 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
3342 + stub_entry
->stub_sec
->output_offset
3343 + stub_entry
->stub_offset
;
3344 branch_offset
= veneered_insn_loc
- veneer_entry_loc
;
3345 branch_offset
>>= 2;
3346 branch_offset
&= 0x3ffffff;
3347 bfd_putl32 (stub_entry
->veneered_insn
,
3348 stub_sec
->contents
+ stub_entry
->stub_offset
);
3349 bfd_putl32 (template[1] | branch_offset
,
3350 stub_sec
->contents
+ stub_entry
->stub_offset
+ 4);
3353 case aarch64_stub_erratum_843419_veneer
:
3354 if (!aarch64_relocate (AARCH64_R (JUMP26
), stub_bfd
, stub_sec
,
3355 stub_entry
->stub_offset
+ 4, sym_value
+ 4))
3366 /* As above, but don't actually build the stub. Just bump offset so
3367 we know stub section sizes. */
3370 aarch64_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
3372 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3373 struct elf_aarch64_link_hash_table
*htab
;
3376 /* Massage our args to the form they really have. */
3377 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
3378 htab
= (struct elf_aarch64_link_hash_table
*) in_arg
;
3380 switch (stub_entry
->stub_type
)
3382 case aarch64_stub_adrp_branch
:
3383 size
= sizeof (aarch64_adrp_branch_stub
);
3385 case aarch64_stub_long_branch
:
3386 size
= sizeof (aarch64_long_branch_stub
);
3388 case aarch64_stub_erratum_835769_veneer
:
3389 size
= sizeof (aarch64_erratum_835769_stub
);
3391 case aarch64_stub_erratum_843419_veneer
:
3393 if (htab
->fix_erratum_843419
== ERRAT_ADR
)
3395 size
= sizeof (aarch64_erratum_843419_stub
);
3402 size
= (size
+ 7) & ~7;
3403 stub_entry
->stub_sec
->size
+= size
;
3407 /* External entry points for sizing and building linker stubs. */
3409 /* Set up various things so that we can make a list of input sections
3410 for each output section included in the link. Returns -1 on error,
3411 0 when no stubs will be needed, and 1 on success. */
3414 elfNN_aarch64_setup_section_lists (bfd
*output_bfd
,
3415 struct bfd_link_info
*info
)
3418 unsigned int bfd_count
;
3419 unsigned int top_id
, top_index
;
3421 asection
**input_list
, **list
;
3423 struct elf_aarch64_link_hash_table
*htab
=
3424 elf_aarch64_hash_table (info
);
3426 if (!is_elf_hash_table (htab
))
3429 /* Count the number of input BFDs and find the top input section id. */
3430 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3431 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
3434 for (section
= input_bfd
->sections
;
3435 section
!= NULL
; section
= section
->next
)
3437 if (top_id
< section
->id
)
3438 top_id
= section
->id
;
3441 htab
->bfd_count
= bfd_count
;
3443 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3444 htab
->stub_group
= bfd_zmalloc (amt
);
3445 if (htab
->stub_group
== NULL
)
3448 /* We can't use output_bfd->section_count here to find the top output
3449 section index as some sections may have been removed, and
3450 _bfd_strip_section_from_output doesn't renumber the indices. */
3451 for (section
= output_bfd
->sections
, top_index
= 0;
3452 section
!= NULL
; section
= section
->next
)
3454 if (top_index
< section
->index
)
3455 top_index
= section
->index
;
3458 htab
->top_index
= top_index
;
3459 amt
= sizeof (asection
*) * (top_index
+ 1);
3460 input_list
= bfd_malloc (amt
);
3461 htab
->input_list
= input_list
;
3462 if (input_list
== NULL
)
3465 /* For sections we aren't interested in, mark their entries with a
3466 value we can check later. */
3467 list
= input_list
+ top_index
;
3469 *list
= bfd_abs_section_ptr
;
3470 while (list
-- != input_list
);
3472 for (section
= output_bfd
->sections
;
3473 section
!= NULL
; section
= section
->next
)
3475 if ((section
->flags
& SEC_CODE
) != 0)
3476 input_list
[section
->index
] = NULL
;
3482 /* Used by elfNN_aarch64_next_input_section and group_sections. */
3483 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3485 /* The linker repeatedly calls this function for each input section,
3486 in the order that input sections are linked into output sections.
3487 Build lists of input sections to determine groupings between which
3488 we may insert linker stubs. */
3491 elfNN_aarch64_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
3493 struct elf_aarch64_link_hash_table
*htab
=
3494 elf_aarch64_hash_table (info
);
3496 if (isec
->output_section
->index
<= htab
->top_index
)
3498 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
3500 if (*list
!= bfd_abs_section_ptr
&& (isec
->flags
& SEC_CODE
) != 0)
3502 /* Steal the link_sec pointer for our list. */
3503 /* This happens to make the list in reverse order,
3504 which is what we want. */
3505 PREV_SEC (isec
) = *list
;
3511 /* See whether we can group stub sections together. Grouping stub
3512 sections may result in fewer stubs. More importantly, we need to
3513 put all .init* and .fini* stubs at the beginning of the .init or
3514 .fini output sections respectively, because glibc splits the
3515 _init and _fini functions into multiple parts. Putting a stub in
3516 the middle of a function is not a good idea. */
3519 group_sections (struct elf_aarch64_link_hash_table
*htab
,
3520 bfd_size_type stub_group_size
,
3521 bfd_boolean stubs_always_after_branch
)
3523 asection
**list
= htab
->input_list
;
3527 asection
*tail
= *list
;
3530 if (tail
== bfd_abs_section_ptr
)
3533 /* Reverse the list: we must avoid placing stubs at the
3534 beginning of the section because the beginning of the text
3535 section may be required for an interrupt vector in bare metal
3537 #define NEXT_SEC PREV_SEC
3539 while (tail
!= NULL
)
3541 /* Pop from tail. */
3542 asection
*item
= tail
;
3543 tail
= PREV_SEC (item
);
3546 NEXT_SEC (item
) = head
;
3550 while (head
!= NULL
)
3554 bfd_vma stub_group_start
= head
->output_offset
;
3555 bfd_vma end_of_next
;
3558 while (NEXT_SEC (curr
) != NULL
)
3560 next
= NEXT_SEC (curr
);
3561 end_of_next
= next
->output_offset
+ next
->size
;
3562 if (end_of_next
- stub_group_start
>= stub_group_size
)
3563 /* End of NEXT is too far from start, so stop. */
3565 /* Add NEXT to the group. */
3569 /* OK, the size from the start to the start of CURR is less
3570 than stub_group_size and thus can be handled by one stub
3571 section. (Or the head section is itself larger than
3572 stub_group_size, in which case we may be toast.)
3573 We should really be keeping track of the total size of
3574 stubs added here, as stubs contribute to the final output
3578 next
= NEXT_SEC (head
);
3579 /* Set up this stub group. */
3580 htab
->stub_group
[head
->id
].link_sec
= curr
;
3582 while (head
!= curr
&& (head
= next
) != NULL
);
3584 /* But wait, there's more! Input sections up to stub_group_size
3585 bytes after the stub section can be handled by it too. */
3586 if (!stubs_always_after_branch
)
3588 stub_group_start
= curr
->output_offset
+ curr
->size
;
3590 while (next
!= NULL
)
3592 end_of_next
= next
->output_offset
+ next
->size
;
3593 if (end_of_next
- stub_group_start
>= stub_group_size
)
3594 /* End of NEXT is too far from stubs, so stop. */
3596 /* Add NEXT to the stub group. */
3598 next
= NEXT_SEC (head
);
3599 htab
->stub_group
[head
->id
].link_sec
= curr
;
3605 while (list
++ != htab
->input_list
+ htab
->top_index
);
3607 free (htab
->input_list
);
3613 #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3615 #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3616 #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3617 #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3618 #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3619 #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3620 #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3622 #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3623 #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3624 #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3625 #define AARCH64_ZR 0x1f
3627 /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3628 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3630 #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3631 #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3632 #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3633 #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3634 #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3635 #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3636 #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3637 #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3638 #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3639 #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3640 #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3641 #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3642 #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3643 #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3644 #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3645 #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3646 #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3647 #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3649 /* Classify an INSN if it is indeed a load/store.
3651 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3653 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3656 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
3659 aarch64_mem_op_p (uint32_t insn
, unsigned int *rt
, unsigned int *rt2
,
3660 bfd_boolean
*pair
, bfd_boolean
*load
)
3668 /* Bail out quickly if INSN doesn't fall into the load-store
3670 if (!AARCH64_LDST (insn
))
3675 if (AARCH64_LDST_EX (insn
))
3677 *rt
= AARCH64_RT (insn
);
3679 if (AARCH64_BIT (insn
, 21) == 1)
3682 *rt2
= AARCH64_RT2 (insn
);
3684 *load
= AARCH64_LD (insn
);
3687 else if (AARCH64_LDST_NAP (insn
)
3688 || AARCH64_LDSTP_PI (insn
)
3689 || AARCH64_LDSTP_O (insn
)
3690 || AARCH64_LDSTP_PRE (insn
))
3693 *rt
= AARCH64_RT (insn
);
3694 *rt2
= AARCH64_RT2 (insn
);
3695 *load
= AARCH64_LD (insn
);
3698 else if (AARCH64_LDST_PCREL (insn
)
3699 || AARCH64_LDST_UI (insn
)
3700 || AARCH64_LDST_PIIMM (insn
)
3701 || AARCH64_LDST_U (insn
)
3702 || AARCH64_LDST_PREIMM (insn
)
3703 || AARCH64_LDST_RO (insn
)
3704 || AARCH64_LDST_UIMM (insn
))
3706 *rt
= AARCH64_RT (insn
);
3708 if (AARCH64_LDST_PCREL (insn
))
3710 opc
= AARCH64_BITS (insn
, 22, 2);
3711 v
= AARCH64_BIT (insn
, 26);
3712 opc_v
= opc
| (v
<< 2);
3713 *load
= (opc_v
== 1 || opc_v
== 2 || opc_v
== 3
3714 || opc_v
== 5 || opc_v
== 7);
3717 else if (AARCH64_LDST_SIMD_M (insn
)
3718 || AARCH64_LDST_SIMD_M_PI (insn
))
3720 *rt
= AARCH64_RT (insn
);
3721 *load
= AARCH64_BIT (insn
, 22);
3722 opcode
= (insn
>> 12) & 0xf;
3749 else if (AARCH64_LDST_SIMD_S (insn
)
3750 || AARCH64_LDST_SIMD_S_PI (insn
))
3752 *rt
= AARCH64_RT (insn
);
3753 r
= (insn
>> 21) & 1;
3754 *load
= AARCH64_BIT (insn
, 22);
3755 opcode
= (insn
>> 13) & 0x7;
3767 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3775 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3787 /* Return TRUE if INSN is multiply-accumulate. */
3790 aarch64_mlxl_p (uint32_t insn
)
3792 uint32_t op31
= AARCH64_OP31 (insn
);
3794 if (AARCH64_MAC (insn
)
3795 && (op31
== 0 || op31
== 1 || op31
== 5)
3796 /* Exclude MUL instructions which are encoded as a multiple accumulate
3798 && AARCH64_RA (insn
) != AARCH64_ZR
)
3804 /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3805 it is possible for a 64-bit multiply-accumulate instruction to generate an
3806 incorrect result. The details are quite complex and hard to
3807 determine statically, since branches in the code may exist in some
3808 circumstances, but all cases end with a memory (load, store, or
3809 prefetch) instruction followed immediately by the multiply-accumulate
3810 operation. We employ a linker patching technique, by moving the potentially
3811 affected multiply-accumulate instruction into a patch region and replacing
3812 the original instruction with a branch to the patch. This function checks
3813 if INSN_1 is the memory operation followed by a multiply-accumulate
3814 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3815 if INSN_1 and INSN_2 are safe. */
3818 aarch64_erratum_sequence (uint32_t insn_1
, uint32_t insn_2
)
3828 if (aarch64_mlxl_p (insn_2
)
3829 && aarch64_mem_op_p (insn_1
, &rt
, &rt2
, &pair
, &load
))
3831 /* Any SIMD memory op is independent of the subsequent MLA
3832 by definition of the erratum. */
3833 if (AARCH64_BIT (insn_1
, 26))
3836 /* If not SIMD, check for integer memory ops and MLA relationship. */
3837 rn
= AARCH64_RN (insn_2
);
3838 ra
= AARCH64_RA (insn_2
);
3839 rm
= AARCH64_RM (insn_2
);
3841 /* If this is a load and there's a true(RAW) dependency, we are safe
3842 and this is not an erratum sequence. */
3844 (rt
== rn
|| rt
== rm
|| rt
== ra
3845 || (pair
&& (rt2
== rn
|| rt2
== rm
|| rt2
== ra
))))
3848 /* We conservatively put out stubs for all other cases (including
3856 /* Used to order a list of mapping symbols by address. */
3859 elf_aarch64_compare_mapping (const void *a
, const void *b
)
3861 const elf_aarch64_section_map
*amap
= (const elf_aarch64_section_map
*) a
;
3862 const elf_aarch64_section_map
*bmap
= (const elf_aarch64_section_map
*) b
;
3864 if (amap
->vma
> bmap
->vma
)
3866 else if (amap
->vma
< bmap
->vma
)
3868 else if (amap
->type
> bmap
->type
)
3869 /* Ensure results do not depend on the host qsort for objects with
3870 multiple mapping symbols at the same address by sorting on type
3873 else if (amap
->type
< bmap
->type
)
3881 _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes
)
3883 char *stub_name
= (char *) bfd_malloc
3884 (strlen ("__erratum_835769_veneer_") + 16);
3885 if (stub_name
!= NULL
)
3886 sprintf (stub_name
,"__erratum_835769_veneer_%d", num_fixes
);
3890 /* Scan for Cortex-A53 erratum 835769 sequence.
3892 Return TRUE else FALSE on abnormal termination. */
3895 _bfd_aarch64_erratum_835769_scan (bfd
*input_bfd
,
3896 struct bfd_link_info
*info
,
3897 unsigned int *num_fixes_p
)
3900 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3901 unsigned int num_fixes
= *num_fixes_p
;
3906 for (section
= input_bfd
->sections
;
3908 section
= section
->next
)
3910 bfd_byte
*contents
= NULL
;
3911 struct _aarch64_elf_section_data
*sec_data
;
3914 if (elf_section_type (section
) != SHT_PROGBITS
3915 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
3916 || (section
->flags
& SEC_EXCLUDE
) != 0
3917 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
3918 || (section
->output_section
== bfd_abs_section_ptr
))
3921 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
3922 contents
= elf_section_data (section
)->this_hdr
.contents
;
3923 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
3926 sec_data
= elf_aarch64_section_data (section
);
3928 qsort (sec_data
->map
, sec_data
->mapcount
,
3929 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
3931 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3933 unsigned int span_start
= sec_data
->map
[span
].vma
;
3934 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
3935 ? sec_data
->map
[0].vma
+ section
->size
3936 : sec_data
->map
[span
+ 1].vma
);
3938 char span_type
= sec_data
->map
[span
].type
;
3940 if (span_type
== 'd')
3943 for (i
= span_start
; i
+ 4 < span_end
; i
+= 4)
3945 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
3946 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
3948 if (aarch64_erratum_sequence (insn_1
, insn_2
))
3950 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3951 char *stub_name
= _bfd_aarch64_erratum_835769_stub_name (num_fixes
);
3955 stub_entry
= _bfd_aarch64_add_stub_entry_in_group (stub_name
,
3961 stub_entry
->stub_type
= aarch64_stub_erratum_835769_veneer
;
3962 stub_entry
->target_section
= section
;
3963 stub_entry
->target_value
= i
+ 4;
3964 stub_entry
->veneered_insn
= insn_2
;
3965 stub_entry
->output_name
= stub_name
;
3970 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
3974 *num_fixes_p
= num_fixes
;
3980 /* Test if instruction INSN is ADRP. */
3983 _bfd_aarch64_adrp_p (uint32_t insn
)
3985 return ((insn
& AARCH64_ADRP_OP_MASK
) == AARCH64_ADRP_OP
);
3989 /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
3992 _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1
, uint32_t insn_2
,
4000 return (aarch64_mem_op_p (insn_2
, &rt
, &rt2
, &pair
, &load
)
4003 && AARCH64_LDST_UIMM (insn_3
)
4004 && AARCH64_RN (insn_3
) == AARCH64_RD (insn_1
));
4008 /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
4010 Return TRUE if section CONTENTS at offset I contains one of the
4011 erratum 843419 sequences, otherwise return FALSE. If a sequence is
4012 seen set P_VENEER_I to the offset of the final LOAD/STORE
4013 instruction in the sequence.
4017 _bfd_aarch64_erratum_843419_p (bfd_byte
*contents
, bfd_vma vma
,
4018 bfd_vma i
, bfd_vma span_end
,
4019 bfd_vma
*p_veneer_i
)
4021 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
4023 if (!_bfd_aarch64_adrp_p (insn_1
))
4026 if (span_end
< i
+ 12)
4029 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
4030 uint32_t insn_3
= bfd_getl32 (contents
+ i
+ 8);
4032 if ((vma
& 0xfff) != 0xff8 && (vma
& 0xfff) != 0xffc)
4035 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_3
))
4037 *p_veneer_i
= i
+ 8;
4041 if (span_end
< i
+ 16)
4044 uint32_t insn_4
= bfd_getl32 (contents
+ i
+ 12);
4046 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_4
))
4048 *p_veneer_i
= i
+ 12;
4056 /* Resize all stub sections. */
4059 _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table
*htab
)
4063 /* OK, we've added some stubs. Find out the new size of the
4065 for (section
= htab
->stub_bfd
->sections
;
4066 section
!= NULL
; section
= section
->next
)
4068 /* Ignore non-stub sections. */
4069 if (!strstr (section
->name
, STUB_SUFFIX
))
4074 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_size_one_stub
, htab
);
4076 for (section
= htab
->stub_bfd
->sections
;
4077 section
!= NULL
; section
= section
->next
)
4079 if (!strstr (section
->name
, STUB_SUFFIX
))
4082 /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
4083 as long branch stubs contain a 64-bit address. */
4087 /* Ensure all stub sections have a size which is a multiple of
4088 4096. This is important in order to ensure that the insertion
4089 of stub sections does not in itself move existing code around
4090 in such a way that new errata sequences are created. We only do this
4091 when the ADRP workaround is enabled. If only the ADR workaround is
4092 enabled then the stubs workaround won't ever be used. */
4093 if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
4095 section
->size
= BFD_ALIGN (section
->size
, 0x1000);
4099 /* Construct an erratum 843419 workaround stub name. */
4102 _bfd_aarch64_erratum_843419_stub_name (asection
*input_section
,
4105 const bfd_size_type len
= 8 + 4 + 1 + 8 + 1 + 16 + 1;
4106 char *stub_name
= bfd_malloc (len
);
4108 if (stub_name
!= NULL
)
4109 snprintf (stub_name
, len
, "e843419@%04x_%08x_%" BFD_VMA_FMT
"x",
4110 input_section
->owner
->id
,
4116 /* Build a stub_entry structure describing an 843419 fixup.
4118 The stub_entry constructed is populated with the bit pattern INSN
4119 of the instruction located at OFFSET within input SECTION.
4121 Returns TRUE on success. */
4124 _bfd_aarch64_erratum_843419_fixup (uint32_t insn
,
4125 bfd_vma adrp_offset
,
4126 bfd_vma ldst_offset
,
4128 struct bfd_link_info
*info
)
4130 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4132 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4134 stub_name
= _bfd_aarch64_erratum_843419_stub_name (section
, ldst_offset
);
4135 if (stub_name
== NULL
)
4137 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4145 /* We always place an 843419 workaround veneer in the stub section
4146 attached to the input section in which an erratum sequence has
4147 been found. This ensures that later in the link process (in
4148 elfNN_aarch64_write_section) when we copy the veneered
4149 instruction from the input section into the stub section the
4150 copied instruction will have had any relocations applied to it.
4151 If we placed workaround veneers in any other stub section then we
4152 could not assume that all relocations have been processed on the
4153 corresponding input section at the point we output the stub
4156 stub_entry
= _bfd_aarch64_add_stub_entry_after (stub_name
, section
, htab
);
4157 if (stub_entry
== NULL
)
4163 stub_entry
->adrp_offset
= adrp_offset
;
4164 stub_entry
->target_value
= ldst_offset
;
4165 stub_entry
->target_section
= section
;
4166 stub_entry
->stub_type
= aarch64_stub_erratum_843419_veneer
;
4167 stub_entry
->veneered_insn
= insn
;
4168 stub_entry
->output_name
= stub_name
;
4174 /* Scan an input section looking for the signature of erratum 843419.
4176 Scans input SECTION in INPUT_BFD looking for erratum 843419
4177 signatures, for each signature found a stub_entry is created
4178 describing the location of the erratum for subsequent fixup.
4180 Return TRUE on successful scan, FALSE on failure to scan.
4184 _bfd_aarch64_erratum_843419_scan (bfd
*input_bfd
, asection
*section
,
4185 struct bfd_link_info
*info
)
4187 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4192 if (elf_section_type (section
) != SHT_PROGBITS
4193 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
4194 || (section
->flags
& SEC_EXCLUDE
) != 0
4195 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
4196 || (section
->output_section
== bfd_abs_section_ptr
))
4201 bfd_byte
*contents
= NULL
;
4202 struct _aarch64_elf_section_data
*sec_data
;
4205 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
4206 contents
= elf_section_data (section
)->this_hdr
.contents
;
4207 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
4210 sec_data
= elf_aarch64_section_data (section
);
4212 qsort (sec_data
->map
, sec_data
->mapcount
,
4213 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
4215 for (span
= 0; span
< sec_data
->mapcount
; span
++)
4217 unsigned int span_start
= sec_data
->map
[span
].vma
;
4218 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
4219 ? sec_data
->map
[0].vma
+ section
->size
4220 : sec_data
->map
[span
+ 1].vma
);
4222 char span_type
= sec_data
->map
[span
].type
;
4224 if (span_type
== 'd')
4227 for (i
= span_start
; i
+ 8 < span_end
; i
+= 4)
4229 bfd_vma vma
= (section
->output_section
->vma
4230 + section
->output_offset
4234 if (_bfd_aarch64_erratum_843419_p
4235 (contents
, vma
, i
, span_end
, &veneer_i
))
4237 uint32_t insn
= bfd_getl32 (contents
+ veneer_i
);
4239 if (!_bfd_aarch64_erratum_843419_fixup (insn
, i
, veneer_i
,
4246 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
4255 /* Determine and set the size of the stub section for a final link.
4257 The basic idea here is to examine all the relocations looking for
4258 PC-relative calls to a target that is unreachable with a "bl"
4262 elfNN_aarch64_size_stubs (bfd
*output_bfd
,
4264 struct bfd_link_info
*info
,
4265 bfd_signed_vma group_size
,
4266 asection
* (*add_stub_section
) (const char *,
4268 void (*layout_sections_again
) (void))
4270 bfd_size_type stub_group_size
;
4271 bfd_boolean stubs_always_before_branch
;
4272 bfd_boolean stub_changed
= FALSE
;
4273 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4274 unsigned int num_erratum_835769_fixes
= 0;
4276 /* Propagate mach to stub bfd, because it may not have been
4277 finalized when we created stub_bfd. */
4278 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
4279 bfd_get_mach (output_bfd
));
4281 /* Stash our params away. */
4282 htab
->stub_bfd
= stub_bfd
;
4283 htab
->add_stub_section
= add_stub_section
;
4284 htab
->layout_sections_again
= layout_sections_again
;
4285 stubs_always_before_branch
= group_size
< 0;
4287 stub_group_size
= -group_size
;
4289 stub_group_size
= group_size
;
4291 if (stub_group_size
== 1)
4293 /* Default values. */
4294 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
4295 stub_group_size
= 127 * 1024 * 1024;
4298 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
4300 (*htab
->layout_sections_again
) ();
4302 if (htab
->fix_erratum_835769
)
4306 for (input_bfd
= info
->input_bfds
;
4307 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
4309 if (!is_aarch64_elf (input_bfd
)
4310 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4313 if (!_bfd_aarch64_erratum_835769_scan (input_bfd
, info
,
4314 &num_erratum_835769_fixes
))
4318 _bfd_aarch64_resize_stubs (htab
);
4319 (*htab
->layout_sections_again
) ();
4322 if (htab
->fix_erratum_843419
!= ERRAT_NONE
)
4326 for (input_bfd
= info
->input_bfds
;
4328 input_bfd
= input_bfd
->link
.next
)
4332 if (!is_aarch64_elf (input_bfd
)
4333 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4336 for (section
= input_bfd
->sections
;
4338 section
= section
->next
)
4339 if (!_bfd_aarch64_erratum_843419_scan (input_bfd
, section
, info
))
4343 _bfd_aarch64_resize_stubs (htab
);
4344 (*htab
->layout_sections_again
) ();
4351 for (input_bfd
= info
->input_bfds
;
4352 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
4354 Elf_Internal_Shdr
*symtab_hdr
;
4356 Elf_Internal_Sym
*local_syms
= NULL
;
4358 if (!is_aarch64_elf (input_bfd
)
4359 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4362 /* We'll need the symbol table in a second. */
4363 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
4364 if (symtab_hdr
->sh_info
== 0)
4367 /* Walk over each section attached to the input bfd. */
4368 for (section
= input_bfd
->sections
;
4369 section
!= NULL
; section
= section
->next
)
4371 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
4373 /* If there aren't any relocs, then there's nothing more
4375 if ((section
->flags
& SEC_RELOC
) == 0
4376 || section
->reloc_count
== 0
4377 || (section
->flags
& SEC_CODE
) == 0)
4380 /* If this section is a link-once section that will be
4381 discarded, then don't create any stubs. */
4382 if (section
->output_section
== NULL
4383 || section
->output_section
->owner
!= output_bfd
)
4386 /* Get the relocs. */
4388 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
4389 NULL
, info
->keep_memory
);
4390 if (internal_relocs
== NULL
)
4391 goto error_ret_free_local
;
4393 /* Now examine each relocation. */
4394 irela
= internal_relocs
;
4395 irelaend
= irela
+ section
->reloc_count
;
4396 for (; irela
< irelaend
; irela
++)
4398 unsigned int r_type
, r_indx
;
4399 enum elf_aarch64_stub_type stub_type
;
4400 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4403 bfd_vma destination
;
4404 struct elf_aarch64_link_hash_entry
*hash
;
4405 const char *sym_name
;
4407 const asection
*id_sec
;
4408 unsigned char st_type
;
4411 r_type
= ELFNN_R_TYPE (irela
->r_info
);
4412 r_indx
= ELFNN_R_SYM (irela
->r_info
);
4414 if (r_type
>= (unsigned int) R_AARCH64_end
)
4416 bfd_set_error (bfd_error_bad_value
);
4417 error_ret_free_internal
:
4418 if (elf_section_data (section
)->relocs
== NULL
)
4419 free (internal_relocs
);
4420 goto error_ret_free_local
;
4423 /* Only look for stubs on unconditional branch and
4424 branch and link instructions. */
4425 if (r_type
!= (unsigned int) AARCH64_R (CALL26
)
4426 && r_type
!= (unsigned int) AARCH64_R (JUMP26
))
4429 /* Now determine the call target, its name, value,
4436 if (r_indx
< symtab_hdr
->sh_info
)
4438 /* It's a local symbol. */
4439 Elf_Internal_Sym
*sym
;
4440 Elf_Internal_Shdr
*hdr
;
4442 if (local_syms
== NULL
)
4445 = (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4446 if (local_syms
== NULL
)
4448 = bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
4449 symtab_hdr
->sh_info
, 0,
4451 if (local_syms
== NULL
)
4452 goto error_ret_free_internal
;
4455 sym
= local_syms
+ r_indx
;
4456 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
4457 sym_sec
= hdr
->bfd_section
;
4459 /* This is an undefined symbol. It can never
4463 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
4464 sym_value
= sym
->st_value
;
4465 destination
= (sym_value
+ irela
->r_addend
4466 + sym_sec
->output_offset
4467 + sym_sec
->output_section
->vma
);
4468 st_type
= ELF_ST_TYPE (sym
->st_info
);
4470 = bfd_elf_string_from_elf_section (input_bfd
,
4471 symtab_hdr
->sh_link
,
4478 e_indx
= r_indx
- symtab_hdr
->sh_info
;
4479 hash
= ((struct elf_aarch64_link_hash_entry
*)
4480 elf_sym_hashes (input_bfd
)[e_indx
]);
4482 while (hash
->root
.root
.type
== bfd_link_hash_indirect
4483 || hash
->root
.root
.type
== bfd_link_hash_warning
)
4484 hash
= ((struct elf_aarch64_link_hash_entry
*)
4485 hash
->root
.root
.u
.i
.link
);
4487 if (hash
->root
.root
.type
== bfd_link_hash_defined
4488 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
4490 struct elf_aarch64_link_hash_table
*globals
=
4491 elf_aarch64_hash_table (info
);
4492 sym_sec
= hash
->root
.root
.u
.def
.section
;
4493 sym_value
= hash
->root
.root
.u
.def
.value
;
4494 /* For a destination in a shared library,
4495 use the PLT stub as target address to
4496 decide whether a branch stub is
4498 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4499 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4501 sym_sec
= globals
->root
.splt
;
4502 sym_value
= hash
->root
.plt
.offset
;
4503 if (sym_sec
->output_section
!= NULL
)
4504 destination
= (sym_value
4505 + sym_sec
->output_offset
4507 sym_sec
->output_section
->vma
);
4509 else if (sym_sec
->output_section
!= NULL
)
4510 destination
= (sym_value
+ irela
->r_addend
4511 + sym_sec
->output_offset
4512 + sym_sec
->output_section
->vma
);
4514 else if (hash
->root
.root
.type
== bfd_link_hash_undefined
4515 || (hash
->root
.root
.type
4516 == bfd_link_hash_undefweak
))
4518 /* For a shared library, use the PLT stub as
4519 target address to decide whether a long
4520 branch stub is needed.
4521 For absolute code, they cannot be handled. */
4522 struct elf_aarch64_link_hash_table
*globals
=
4523 elf_aarch64_hash_table (info
);
4525 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4526 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4528 sym_sec
= globals
->root
.splt
;
4529 sym_value
= hash
->root
.plt
.offset
;
4530 if (sym_sec
->output_section
!= NULL
)
4531 destination
= (sym_value
4532 + sym_sec
->output_offset
4534 sym_sec
->output_section
->vma
);
4541 bfd_set_error (bfd_error_bad_value
);
4542 goto error_ret_free_internal
;
4544 st_type
= ELF_ST_TYPE (hash
->root
.type
);
4545 sym_name
= hash
->root
.root
.root
.string
;
4548 /* Determine what (if any) linker stub is needed. */
4549 stub_type
= aarch64_type_of_stub (section
, irela
, sym_sec
,
4550 st_type
, destination
);
4551 if (stub_type
== aarch64_stub_none
)
4554 /* Support for grouping stub sections. */
4555 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
4557 /* Get the name of this stub. */
4558 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, hash
,
4561 goto error_ret_free_internal
;
4564 aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
4565 stub_name
, FALSE
, FALSE
);
4566 if (stub_entry
!= NULL
)
4568 /* The proper stub has already been created. */
4570 /* Always update this stub's target since it may have
4571 changed after layout. */
4572 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
4576 stub_entry
= _bfd_aarch64_add_stub_entry_in_group
4577 (stub_name
, section
, htab
);
4578 if (stub_entry
== NULL
)
4581 goto error_ret_free_internal
;
4584 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
4585 stub_entry
->target_section
= sym_sec
;
4586 stub_entry
->stub_type
= stub_type
;
4587 stub_entry
->h
= hash
;
4588 stub_entry
->st_type
= st_type
;
4590 if (sym_name
== NULL
)
4591 sym_name
= "unnamed";
4592 len
= sizeof (STUB_ENTRY_NAME
) + strlen (sym_name
);
4593 stub_entry
->output_name
= bfd_alloc (htab
->stub_bfd
, len
);
4594 if (stub_entry
->output_name
== NULL
)
4597 goto error_ret_free_internal
;
4600 snprintf (stub_entry
->output_name
, len
, STUB_ENTRY_NAME
,
4603 stub_changed
= TRUE
;
4606 /* We're done with the internal relocs, free them. */
4607 if (elf_section_data (section
)->relocs
== NULL
)
4608 free (internal_relocs
);
4615 _bfd_aarch64_resize_stubs (htab
);
4617 /* Ask the linker to do its stuff. */
4618 (*htab
->layout_sections_again
) ();
4619 stub_changed
= FALSE
;
4624 error_ret_free_local
:
4628 /* Build all the stubs associated with the current output file. The
4629 stubs are kept in a hash table attached to the main linker hash
4630 table. We also set up the .plt entries for statically linked PIC
4631 functions here. This function is called via aarch64_elf_finish in the
4635 elfNN_aarch64_build_stubs (struct bfd_link_info
*info
)
4638 struct bfd_hash_table
*table
;
4639 struct elf_aarch64_link_hash_table
*htab
;
4641 htab
= elf_aarch64_hash_table (info
);
4643 for (stub_sec
= htab
->stub_bfd
->sections
;
4644 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
4648 /* Ignore non-stub sections. */
4649 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
4652 /* Allocate memory to hold the linker stubs. */
4653 size
= stub_sec
->size
;
4654 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
4655 if (stub_sec
->contents
== NULL
&& size
!= 0)
4659 /* Add a branch around the stub section, and a nop, to keep it 8 byte
4660 aligned, as long branch stubs contain a 64-bit address. */
4661 bfd_putl32 (0x14000000 | (size
>> 2), stub_sec
->contents
);
4662 bfd_putl32 (INSN_NOP
, stub_sec
->contents
+ 4);
4663 stub_sec
->size
+= 8;
4666 /* Build the stubs as directed by the stub hash table. */
4667 table
= &htab
->stub_hash_table
;
4668 bfd_hash_traverse (table
, aarch64_build_one_stub
, info
);
4674 /* Add an entry to the code/data map for section SEC. */
4677 elfNN_aarch64_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
4679 struct _aarch64_elf_section_data
*sec_data
=
4680 elf_aarch64_section_data (sec
);
4681 unsigned int newidx
;
4683 if (sec_data
->map
== NULL
)
4685 sec_data
->map
= bfd_malloc (sizeof (elf_aarch64_section_map
));
4686 sec_data
->mapcount
= 0;
4687 sec_data
->mapsize
= 1;
4690 newidx
= sec_data
->mapcount
++;
4692 if (sec_data
->mapcount
> sec_data
->mapsize
)
4694 sec_data
->mapsize
*= 2;
4695 sec_data
->map
= bfd_realloc_or_free
4696 (sec_data
->map
, sec_data
->mapsize
* sizeof (elf_aarch64_section_map
));
4701 sec_data
->map
[newidx
].vma
= vma
;
4702 sec_data
->map
[newidx
].type
= type
;
4707 /* Initialise maps of insn/data for input BFDs. */
4709 bfd_elfNN_aarch64_init_maps (bfd
*abfd
)
4711 Elf_Internal_Sym
*isymbuf
;
4712 Elf_Internal_Shdr
*hdr
;
4713 unsigned int i
, localsyms
;
4715 /* Make sure that we are dealing with an AArch64 elf binary. */
4716 if (!is_aarch64_elf (abfd
))
4719 if ((abfd
->flags
& DYNAMIC
) != 0)
4722 hdr
= &elf_symtab_hdr (abfd
);
4723 localsyms
= hdr
->sh_info
;
4725 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4726 should contain the number of local symbols, which should come before any
4727 global symbols. Mapping symbols are always local. */
4728 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
, NULL
);
4730 /* No internal symbols read? Skip this BFD. */
4731 if (isymbuf
== NULL
)
4734 for (i
= 0; i
< localsyms
; i
++)
4736 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
4737 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4740 if (sec
!= NULL
&& ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
4742 name
= bfd_elf_string_from_elf_section (abfd
,
4746 if (bfd_is_aarch64_special_symbol_name
4747 (name
, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP
))
4748 elfNN_aarch64_section_map_add (sec
, name
[1], isym
->st_value
);
4754 setup_plt_values (struct bfd_link_info
*link_info
,
4755 aarch64_plt_type plt_type
)
4757 struct elf_aarch64_link_hash_table
*globals
;
4758 globals
= elf_aarch64_hash_table (link_info
);
4760 if (plt_type
== PLT_BTI_PAC
)
4762 globals
->plt0_entry
= elfNN_aarch64_small_plt0_bti_entry
;
4764 /* Only in ET_EXEC we need PLTn with BTI. */
4765 if (bfd_link_pde (link_info
))
4767 globals
->plt_entry_size
= PLT_BTI_PAC_SMALL_ENTRY_SIZE
;
4768 globals
->plt_entry
= elfNN_aarch64_small_plt_bti_pac_entry
;
4772 globals
->plt_entry_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
4773 globals
->plt_entry
= elfNN_aarch64_small_plt_pac_entry
;
4776 else if (plt_type
== PLT_BTI
)
4778 globals
->plt0_entry
= elfNN_aarch64_small_plt0_bti_entry
;
4780 /* Only in ET_EXEC we need PLTn with BTI. */
4781 if (bfd_link_pde (link_info
))
4783 globals
->plt_entry_size
= PLT_BTI_SMALL_ENTRY_SIZE
;
4784 globals
->plt_entry
= elfNN_aarch64_small_plt_bti_entry
;
4787 else if (plt_type
== PLT_PAC
)
4789 globals
->plt_entry_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
4790 globals
->plt_entry
= elfNN_aarch64_small_plt_pac_entry
;
4794 /* Set option values needed during linking. */
4796 bfd_elfNN_aarch64_set_options (struct bfd
*output_bfd
,
4797 struct bfd_link_info
*link_info
,
4799 int no_wchar_warn
, int pic_veneer
,
4800 int fix_erratum_835769
,
4801 erratum_84319_opts fix_erratum_843419
,
4802 int no_apply_dynamic_relocs
,
4803 aarch64_bti_pac_info bp_info
)
4805 struct elf_aarch64_link_hash_table
*globals
;
4807 globals
= elf_aarch64_hash_table (link_info
);
4808 globals
->pic_veneer
= pic_veneer
;
4809 globals
->fix_erratum_835769
= fix_erratum_835769
;
4810 /* If the default options are used, then ERRAT_ADR will be set by default
4811 which will enable the ADRP->ADR workaround for the erratum 843419
4813 globals
->fix_erratum_843419
= fix_erratum_843419
;
4814 globals
->no_apply_dynamic_relocs
= no_apply_dynamic_relocs
;
4816 BFD_ASSERT (is_aarch64_elf (output_bfd
));
4817 elf_aarch64_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
4818 elf_aarch64_tdata (output_bfd
)->no_wchar_size_warning
= no_wchar_warn
;
4820 switch (bp_info
.bti_type
)
4823 elf_aarch64_tdata (output_bfd
)->no_bti_warn
= 0;
4824 elf_aarch64_tdata (output_bfd
)->gnu_and_prop
4825 |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI
;
4831 elf_aarch64_tdata (output_bfd
)->plt_type
= bp_info
.plt_type
;
4832 setup_plt_values (link_info
, bp_info
.plt_type
);
4836 aarch64_calculate_got_entry_vma (struct elf_link_hash_entry
*h
,
4837 struct elf_aarch64_link_hash_table
4838 *globals
, struct bfd_link_info
*info
,
4839 bfd_vma value
, bfd
*output_bfd
,
4840 bfd_boolean
*unresolved_reloc_p
)
4842 bfd_vma off
= (bfd_vma
) - 1;
4843 asection
*basegot
= globals
->root
.sgot
;
4844 bfd_boolean dyn
= globals
->root
.dynamic_sections_created
;
4848 BFD_ASSERT (basegot
!= NULL
);
4849 off
= h
->got
.offset
;
4850 BFD_ASSERT (off
!= (bfd_vma
) - 1);
4851 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
4852 || (bfd_link_pic (info
)
4853 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4854 || (ELF_ST_VISIBILITY (h
->other
)
4855 && h
->root
.type
== bfd_link_hash_undefweak
))
4857 /* This is actually a static link, or it is a -Bsymbolic link
4858 and the symbol is defined locally. We must initialize this
4859 entry in the global offset table. Since the offset must
4860 always be a multiple of 8 (4 in the case of ILP32), we use
4861 the least significant bit to record whether we have
4862 initialized it already.
4863 When doing a dynamic link, we create a .rel(a).got relocation
4864 entry to initialize the value. This is done in the
4865 finish_dynamic_symbol routine. */
4870 bfd_put_NN (output_bfd
, value
, basegot
->contents
+ off
);
4875 *unresolved_reloc_p
= FALSE
;
4877 off
= off
+ basegot
->output_section
->vma
+ basegot
->output_offset
;
4883 /* Change R_TYPE to a more efficient access model where possible,
4884 return the new reloc type. */
4886 static bfd_reloc_code_real_type
4887 aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type
,
4888 struct elf_link_hash_entry
*h
)
4890 bfd_boolean is_local
= h
== NULL
;
4894 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
4895 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
4897 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4898 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
);
4900 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
4902 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4905 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
4907 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4908 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4910 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
4912 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4913 : BFD_RELOC_AARCH64_NONE
);
4915 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
4917 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4918 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
);
4920 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
4922 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4923 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
);
4925 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
4926 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
4928 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4929 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
);
4931 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
4932 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
: r_type
;
4934 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
4935 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
: r_type
;
4937 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
4940 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
4942 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4943 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4945 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
4946 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
4947 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
4948 /* Instructions with these relocations will become NOPs. */
4949 return BFD_RELOC_AARCH64_NONE
;
4951 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
4952 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
4953 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
4954 return is_local
? BFD_RELOC_AARCH64_NONE
: r_type
;
4957 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
4959 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4960 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
;
4962 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
4964 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4965 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
;
4976 aarch64_reloc_got_type (bfd_reloc_code_real_type r_type
)
4980 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
4981 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
4982 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
4983 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
4984 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
4985 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
4986 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
4987 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
4988 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
4991 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
4992 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
4993 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
4994 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
4995 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
4996 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
4997 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
4998 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5001 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5002 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
5003 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
5004 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
5005 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5006 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
5007 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
5008 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
5009 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5010 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
5011 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
5012 return GOT_TLSDESC_GD
;
5014 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
5015 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
5016 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
5017 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
5018 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
5019 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
5029 aarch64_can_relax_tls (bfd
*input_bfd
,
5030 struct bfd_link_info
*info
,
5031 bfd_reloc_code_real_type r_type
,
5032 struct elf_link_hash_entry
*h
,
5033 unsigned long r_symndx
)
5035 unsigned int symbol_got_type
;
5036 unsigned int reloc_got_type
;
5038 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type
))
5041 symbol_got_type
= elfNN_aarch64_symbol_got_type (h
, input_bfd
, r_symndx
);
5042 reloc_got_type
= aarch64_reloc_got_type (r_type
);
5044 if (symbol_got_type
== GOT_TLS_IE
&& GOT_TLS_GD_ANY_P (reloc_got_type
))
5047 if (!bfd_link_executable (info
))
5050 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
5056 /* Given the relocation code R_TYPE, return the relaxed bfd reloc
5059 static bfd_reloc_code_real_type
5060 aarch64_tls_transition (bfd
*input_bfd
,
5061 struct bfd_link_info
*info
,
5062 unsigned int r_type
,
5063 struct elf_link_hash_entry
*h
,
5064 unsigned long r_symndx
)
5066 bfd_reloc_code_real_type bfd_r_type
5067 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
5069 if (! aarch64_can_relax_tls (input_bfd
, info
, bfd_r_type
, h
, r_symndx
))
5072 return aarch64_tls_transition_without_check (bfd_r_type
, h
);
5075 /* Return the base VMA address which should be subtracted from real addresses
5076 when resolving R_AARCH64_TLS_DTPREL relocation. */
5079 dtpoff_base (struct bfd_link_info
*info
)
5081 /* If tls_sec is NULL, we should have signalled an error already. */
5082 BFD_ASSERT (elf_hash_table (info
)->tls_sec
!= NULL
);
5083 return elf_hash_table (info
)->tls_sec
->vma
;
5086 /* Return the base VMA address which should be subtracted from real addresses
5087 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
5090 tpoff_base (struct bfd_link_info
*info
)
5092 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5094 /* If tls_sec is NULL, we should have signalled an error already. */
5095 BFD_ASSERT (htab
->tls_sec
!= NULL
);
5097 bfd_vma base
= align_power ((bfd_vma
) TCB_SIZE
,
5098 htab
->tls_sec
->alignment_power
);
5099 return htab
->tls_sec
->vma
- base
;
5103 symbol_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5104 unsigned long r_symndx
)
5106 /* Calculate the address of the GOT entry for symbol
5107 referred to in h. */
5109 return &h
->got
.offset
;
5113 struct elf_aarch64_local_symbol
*l
;
5115 l
= elf_aarch64_locals (input_bfd
);
5116 return &l
[r_symndx
].got_offset
;
5121 symbol_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5122 unsigned long r_symndx
)
5125 p
= symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5130 symbol_got_offset_mark_p (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5131 unsigned long r_symndx
)
5134 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5139 symbol_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5140 unsigned long r_symndx
)
5143 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5149 symbol_tlsdesc_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5150 unsigned long r_symndx
)
5152 /* Calculate the address of the GOT entry for symbol
5153 referred to in h. */
5156 struct elf_aarch64_link_hash_entry
*eh
;
5157 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
5158 return &eh
->tlsdesc_got_jump_table_offset
;
5163 struct elf_aarch64_local_symbol
*l
;
5165 l
= elf_aarch64_locals (input_bfd
);
5166 return &l
[r_symndx
].tlsdesc_got_jump_table_offset
;
5171 symbol_tlsdesc_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5172 unsigned long r_symndx
)
5175 p
= symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5180 symbol_tlsdesc_got_offset_mark_p (bfd
*input_bfd
,
5181 struct elf_link_hash_entry
*h
,
5182 unsigned long r_symndx
)
5185 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5190 symbol_tlsdesc_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5191 unsigned long r_symndx
)
5194 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5199 /* Data for make_branch_to_erratum_835769_stub(). */
5201 struct erratum_835769_branch_to_stub_data
5203 struct bfd_link_info
*info
;
5204 asection
*output_section
;
5208 /* Helper to insert branches to erratum 835769 stubs in the right
5209 places for a particular section. */
5212 make_branch_to_erratum_835769_stub (struct bfd_hash_entry
*gen_entry
,
5215 struct elf_aarch64_stub_hash_entry
*stub_entry
;
5216 struct erratum_835769_branch_to_stub_data
*data
;
5218 unsigned long branch_insn
= 0;
5219 bfd_vma veneered_insn_loc
, veneer_entry_loc
;
5220 bfd_signed_vma branch_offset
;
5221 unsigned int target
;
5224 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
5225 data
= (struct erratum_835769_branch_to_stub_data
*) in_arg
;
5227 if (stub_entry
->target_section
!= data
->output_section
5228 || stub_entry
->stub_type
!= aarch64_stub_erratum_835769_veneer
)
5231 contents
= data
->contents
;
5232 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
5233 + stub_entry
->target_section
->output_offset
5234 + stub_entry
->target_value
;
5235 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
5236 + stub_entry
->stub_sec
->output_offset
5237 + stub_entry
->stub_offset
;
5238 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
5240 abfd
= stub_entry
->target_section
->owner
;
5241 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
5243 (_("%pB: error: erratum 835769 stub out "
5244 "of range (input file too large)"), abfd
);
5246 target
= stub_entry
->target_value
;
5247 branch_insn
= 0x14000000;
5248 branch_offset
>>= 2;
5249 branch_offset
&= 0x3ffffff;
5250 branch_insn
|= branch_offset
;
5251 bfd_putl32 (branch_insn
, &contents
[target
]);
5258 _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry
*gen_entry
,
5261 struct elf_aarch64_stub_hash_entry
*stub_entry
5262 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
5263 struct erratum_835769_branch_to_stub_data
*data
5264 = (struct erratum_835769_branch_to_stub_data
*) in_arg
;
5265 struct bfd_link_info
*info
;
5266 struct elf_aarch64_link_hash_table
*htab
;
5274 contents
= data
->contents
;
5275 section
= data
->output_section
;
5277 htab
= elf_aarch64_hash_table (info
);
5279 if (stub_entry
->target_section
!= section
5280 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
)
5283 BFD_ASSERT (((htab
->fix_erratum_843419
& ERRAT_ADRP
) && stub_entry
->stub_sec
)
5284 || (htab
->fix_erratum_843419
& ERRAT_ADR
));
5286 /* Only update the stub section if we have one. We should always have one if
5287 we're allowed to use the ADRP errata workaround, otherwise it is not
5289 if (stub_entry
->stub_sec
)
5291 insn
= bfd_getl32 (contents
+ stub_entry
->target_value
);
5293 stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
);
5296 place
= (section
->output_section
->vma
+ section
->output_offset
5297 + stub_entry
->adrp_offset
);
5298 insn
= bfd_getl32 (contents
+ stub_entry
->adrp_offset
);
5300 if (!_bfd_aarch64_adrp_p (insn
))
5303 bfd_signed_vma imm
=
5304 (_bfd_aarch64_sign_extend
5305 ((bfd_vma
) _bfd_aarch64_decode_adrp_imm (insn
) << 12, 33)
5308 if ((htab
->fix_erratum_843419
& ERRAT_ADR
)
5309 && (imm
>= AARCH64_MIN_ADRP_IMM
&& imm
<= AARCH64_MAX_ADRP_IMM
))
5311 insn
= (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP
, imm
)
5312 | AARCH64_RT (insn
));
5313 bfd_putl32 (insn
, contents
+ stub_entry
->adrp_offset
);
5314 /* Stub is not needed, don't map it out. */
5315 stub_entry
->stub_type
= aarch64_stub_none
;
5317 else if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
5319 bfd_vma veneered_insn_loc
;
5320 bfd_vma veneer_entry_loc
;
5321 bfd_signed_vma branch_offset
;
5322 uint32_t branch_insn
;
5324 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
5325 + stub_entry
->target_section
->output_offset
5326 + stub_entry
->target_value
;
5327 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
5328 + stub_entry
->stub_sec
->output_offset
5329 + stub_entry
->stub_offset
;
5330 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
5332 abfd
= stub_entry
->target_section
->owner
;
5333 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
5335 (_("%pB: error: erratum 843419 stub out "
5336 "of range (input file too large)"), abfd
);
5338 branch_insn
= 0x14000000;
5339 branch_offset
>>= 2;
5340 branch_offset
&= 0x3ffffff;
5341 branch_insn
|= branch_offset
;
5342 bfd_putl32 (branch_insn
, contents
+ stub_entry
->target_value
);
5346 abfd
= stub_entry
->target_section
->owner
;
5348 (_("%pB: error: erratum 843419 immediate 0x%" BFD_VMA_FMT
"x "
5349 "out of range for ADR (input file too large) and "
5350 "--fix-cortex-a53-843419=adr used. Run the linker with "
5351 "--fix-cortex-a53-843419=full instead"), abfd
, imm
);
5352 bfd_set_error (bfd_error_bad_value
);
5353 /* This function is called inside a hashtable traversal and the error
5354 handlers called above turn into non-fatal errors. Which means this
5355 case ld returns an exit code 0 and also produces a broken object file.
5356 To prevent this, issue a hard abort. */
5364 elfNN_aarch64_write_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
5365 struct bfd_link_info
*link_info
,
5370 struct elf_aarch64_link_hash_table
*globals
=
5371 elf_aarch64_hash_table (link_info
);
5373 if (globals
== NULL
)
5376 /* Fix code to point to erratum 835769 stubs. */
5377 if (globals
->fix_erratum_835769
)
5379 struct erratum_835769_branch_to_stub_data data
;
5381 data
.info
= link_info
;
5382 data
.output_section
= sec
;
5383 data
.contents
= contents
;
5384 bfd_hash_traverse (&globals
->stub_hash_table
,
5385 make_branch_to_erratum_835769_stub
, &data
);
5388 if (globals
->fix_erratum_843419
)
5390 struct erratum_835769_branch_to_stub_data data
;
5392 data
.info
= link_info
;
5393 data
.output_section
= sec
;
5394 data
.contents
= contents
;
5395 bfd_hash_traverse (&globals
->stub_hash_table
,
5396 _bfd_aarch64_erratum_843419_branch_to_stub
, &data
);
5402 /* Return TRUE if RELOC is a relocation against the base of GOT table. */
5405 aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc
)
5407 return (reloc
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
5408 || reloc
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5409 || reloc
== BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
5410 || reloc
== BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
5411 || reloc
== BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
);
5414 /* Perform a relocation as part of a final link. The input relocation type
5415 should be TLS relaxed. */
5417 static bfd_reloc_status_type
5418 elfNN_aarch64_final_link_relocate (reloc_howto_type
*howto
,
5421 asection
*input_section
,
5423 Elf_Internal_Rela
*rel
,
5425 struct bfd_link_info
*info
,
5427 struct elf_link_hash_entry
*h
,
5428 bfd_boolean
*unresolved_reloc_p
,
5429 bfd_boolean save_addend
,
5430 bfd_vma
*saved_addend
,
5431 Elf_Internal_Sym
*sym
)
5433 Elf_Internal_Shdr
*symtab_hdr
;
5434 unsigned int r_type
= howto
->type
;
5435 bfd_reloc_code_real_type bfd_r_type
5436 = elfNN_aarch64_bfd_reloc_from_howto (howto
);
5437 unsigned long r_symndx
;
5438 bfd_byte
*hit_data
= contents
+ rel
->r_offset
;
5439 bfd_vma place
, off
, got_entry_addr
= 0;
5440 bfd_signed_vma signed_addend
;
5441 struct elf_aarch64_link_hash_table
*globals
;
5442 bfd_boolean weak_undef_p
;
5443 bfd_boolean relative_reloc
;
5445 bfd_vma orig_value
= value
;
5446 bfd_boolean resolved_to_zero
;
5447 bfd_boolean abs_symbol_p
;
5448 bfd_boolean via_plt_p
;
5450 globals
= elf_aarch64_hash_table (info
);
5452 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
5454 BFD_ASSERT (is_aarch64_elf (input_bfd
));
5456 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
5458 place
= input_section
->output_section
->vma
5459 + input_section
->output_offset
+ rel
->r_offset
;
5461 /* Get addend, accumulating the addend for consecutive relocs
5462 which refer to the same offset. */
5463 signed_addend
= saved_addend
? *saved_addend
: 0;
5464 signed_addend
+= rel
->r_addend
;
5466 weak_undef_p
= (h
? h
->root
.type
== bfd_link_hash_undefweak
5467 : bfd_is_und_section (sym_sec
));
5468 abs_symbol_p
= h
!= NULL
&& bfd_is_abs_symbol (&h
->root
);
5470 via_plt_p
= (globals
->root
.splt
!= NULL
&& h
!= NULL
5471 && h
->plt
.offset
!= (bfd_vma
) - 1);
5473 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
5474 it here if it is defined in a non-shared object. */
5476 && h
->type
== STT_GNU_IFUNC
5483 if ((input_section
->flags
& SEC_ALLOC
) == 0)
5485 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
5486 STT_GNU_IFUNC symbol as STT_FUNC. */
5487 if (elf_section_type (input_section
) == SHT_NOTE
)
5490 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5491 sections because such sections are not SEC_ALLOC and
5492 thus ld.so will not process them. */
5493 if ((input_section
->flags
& SEC_DEBUGGING
) != 0)
5494 return bfd_reloc_ok
;
5496 if (h
->root
.root
.string
)
5497 name
= h
->root
.root
.string
;
5499 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, NULL
);
5501 /* xgettext:c-format */
5502 (_("%pB(%pA+%#" PRIx64
"): "
5503 "unresolvable %s relocation against symbol `%s'"),
5504 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
5506 bfd_set_error (bfd_error_bad_value
);
5507 return bfd_reloc_notsupported
;
5509 else if (h
->plt
.offset
== (bfd_vma
) -1)
5510 goto bad_ifunc_reloc
;
5512 /* STT_GNU_IFUNC symbol must go through PLT. */
5513 plt
= globals
->root
.splt
? globals
->root
.splt
: globals
->root
.iplt
;
5514 value
= (plt
->output_section
->vma
+ plt
->output_offset
+ h
->plt
.offset
);
5520 if (h
->root
.root
.string
)
5521 name
= h
->root
.root
.string
;
5523 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
5526 /* xgettext:c-format */
5527 (_("%pB: relocation %s against STT_GNU_IFUNC "
5528 "symbol `%s' isn't handled by %s"), input_bfd
,
5529 howto
->name
, name
, __FUNCTION__
);
5530 bfd_set_error (bfd_error_bad_value
);
5531 return bfd_reloc_notsupported
;
5533 case BFD_RELOC_AARCH64_NN
:
5534 if (rel
->r_addend
!= 0)
5536 if (h
->root
.root
.string
)
5537 name
= h
->root
.root
.string
;
5539 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
,
5542 /* xgettext:c-format */
5543 (_("%pB: relocation %s against STT_GNU_IFUNC "
5544 "symbol `%s' has non-zero addend: %" PRId64
),
5545 input_bfd
, howto
->name
, name
, (int64_t) rel
->r_addend
);
5546 bfd_set_error (bfd_error_bad_value
);
5547 return bfd_reloc_notsupported
;
5550 /* Generate dynamic relocation only when there is a
5551 non-GOT reference in a shared object. */
5552 if (bfd_link_pic (info
) && h
->non_got_ref
)
5554 Elf_Internal_Rela outrel
;
5557 /* Need a dynamic relocation to get the real function
5559 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
5563 if (outrel
.r_offset
== (bfd_vma
) -1
5564 || outrel
.r_offset
== (bfd_vma
) -2)
5567 outrel
.r_offset
+= (input_section
->output_section
->vma
5568 + input_section
->output_offset
);
5570 if (h
->dynindx
== -1
5572 || bfd_link_executable (info
))
5574 /* This symbol is resolved locally. */
5575 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
5576 outrel
.r_addend
= (h
->root
.u
.def
.value
5577 + h
->root
.u
.def
.section
->output_section
->vma
5578 + h
->root
.u
.def
.section
->output_offset
);
5582 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5583 outrel
.r_addend
= 0;
5586 sreloc
= globals
->root
.irelifunc
;
5587 elf_append_rela (output_bfd
, sreloc
, &outrel
);
5589 /* If this reloc is against an external symbol, we
5590 do not want to fiddle with the addend. Otherwise,
5591 we need to include the symbol value so that it
5592 becomes an addend for the dynamic reloc. For an
5593 internal symbol, we have updated addend. */
5594 return bfd_reloc_ok
;
5597 case BFD_RELOC_AARCH64_CALL26
:
5598 case BFD_RELOC_AARCH64_JUMP26
:
5599 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5603 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
5605 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5606 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5607 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5608 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5609 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5610 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5611 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5612 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5613 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5614 base_got
= globals
->root
.sgot
;
5615 off
= h
->got
.offset
;
5617 if (base_got
== NULL
)
5620 if (off
== (bfd_vma
) -1)
5624 /* We can't use h->got.offset here to save state, or
5625 even just remember the offset, as finish_dynamic_symbol
5626 would use that as offset into .got. */
5628 if (globals
->root
.splt
!= NULL
)
5630 plt_index
= ((h
->plt
.offset
- globals
->plt_header_size
) /
5631 globals
->plt_entry_size
);
5632 off
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
5633 base_got
= globals
->root
.sgotplt
;
5637 plt_index
= h
->plt
.offset
/ globals
->plt_entry_size
;
5638 off
= plt_index
* GOT_ENTRY_SIZE
;
5639 base_got
= globals
->root
.igotplt
;
5642 if (h
->dynindx
== -1
5646 /* This references the local definition. We must
5647 initialize this entry in the global offset table.
5648 Since the offset must always be a multiple of 8,
5649 we use the least significant bit to record
5650 whether we have initialized it already.
5652 When doing a dynamic link, we create a .rela.got
5653 relocation entry to initialize the value. This
5654 is done in the finish_dynamic_symbol routine. */
5659 bfd_put_NN (output_bfd
, value
,
5660 base_got
->contents
+ off
);
5661 /* Note that this is harmless as -1 | 1 still is -1. */
5665 value
= (base_got
->output_section
->vma
5666 + base_got
->output_offset
+ off
);
5669 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
,
5671 unresolved_reloc_p
);
5673 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
5674 addend
= (globals
->root
.sgot
->output_section
->vma
5675 + globals
->root
.sgot
->output_offset
);
5677 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5679 addend
, weak_undef_p
);
5680 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
, howto
, value
);
5681 case BFD_RELOC_AARCH64_ADD_LO12
:
5682 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5688 resolved_to_zero
= (h
!= NULL
5689 && UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
5693 case BFD_RELOC_AARCH64_NONE
:
5694 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5695 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5696 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5697 *unresolved_reloc_p
= FALSE
;
5698 return bfd_reloc_ok
;
5700 case BFD_RELOC_AARCH64_NN
:
5702 /* When generating a shared object or relocatable executable, these
5703 relocations are copied into the output file to be resolved at
5705 if (((bfd_link_pic (info
)
5706 || globals
->root
.is_relocatable_executable
)
5707 && (input_section
->flags
& SEC_ALLOC
)
5709 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5710 && !resolved_to_zero
)
5711 || h
->root
.type
!= bfd_link_hash_undefweak
))
5712 /* Or we are creating an executable, we may need to keep relocations
5713 for symbols satisfied by a dynamic library if we manage to avoid
5714 copy relocs for the symbol. */
5715 || (ELIMINATE_COPY_RELOCS
5716 && !bfd_link_pic (info
)
5718 && (input_section
->flags
& SEC_ALLOC
)
5723 || h
->root
.type
== bfd_link_hash_undefweak
5724 || h
->root
.type
== bfd_link_hash_undefined
)))
5726 Elf_Internal_Rela outrel
;
5728 bfd_boolean skip
, relocate
;
5731 *unresolved_reloc_p
= FALSE
;
5736 outrel
.r_addend
= signed_addend
;
5738 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
5740 if (outrel
.r_offset
== (bfd_vma
) - 1)
5742 else if (outrel
.r_offset
== (bfd_vma
) - 2)
5747 else if (abs_symbol_p
)
5749 /* Local absolute symbol. */
5750 skip
= (h
->forced_local
|| (h
->dynindx
== -1));
5754 outrel
.r_offset
+= (input_section
->output_section
->vma
5755 + input_section
->output_offset
);
5758 memset (&outrel
, 0, sizeof outrel
);
5761 && (!bfd_link_pic (info
)
5762 || !(bfd_link_pie (info
) || SYMBOLIC_BIND (info
, h
))
5763 || !h
->def_regular
))
5764 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5769 /* On SVR4-ish systems, the dynamic loader cannot
5770 relocate the text and data segments independently,
5771 so the symbol does not matter. */
5773 relocate
= globals
->no_apply_dynamic_relocs
? FALSE
: TRUE
;
5774 outrel
.r_info
= ELFNN_R_INFO (symbol
, AARCH64_R (RELATIVE
));
5775 outrel
.r_addend
+= value
;
5778 sreloc
= elf_section_data (input_section
)->sreloc
;
5779 if (sreloc
== NULL
|| sreloc
->contents
== NULL
)
5780 return bfd_reloc_notsupported
;
5782 loc
= sreloc
->contents
+ sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
5783 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
5785 if (sreloc
->reloc_count
* RELOC_SIZE (globals
) > sreloc
->size
)
5787 /* Sanity to check that we have previously allocated
5788 sufficient space in the relocation section for the
5789 number of relocations we actually want to emit. */
5793 /* If this reloc is against an external symbol, we do not want to
5794 fiddle with the addend. Otherwise, we need to include the symbol
5795 value so that it becomes an addend for the dynamic reloc. */
5797 return bfd_reloc_ok
;
5799 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5800 contents
, rel
->r_offset
, value
,
5804 value
+= signed_addend
;
5807 case BFD_RELOC_AARCH64_BRANCH19
:
5808 case BFD_RELOC_AARCH64_TSTBR14
:
5809 /* A conditional branch to an undefined weak symbol is converted to a
5810 branch to itself. */
5811 if (weak_undef_p
&& !via_plt_p
)
5813 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5820 case BFD_RELOC_AARCH64_CALL26
:
5821 case BFD_RELOC_AARCH64_JUMP26
:
5823 asection
*splt
= globals
->root
.splt
;
5825 /* A call to an undefined weak symbol is converted to a jump to
5826 the next instruction unless a PLT entry will be created.
5827 The jump to the next instruction is optimized as a NOP.
5828 Do the same for local undefined symbols. */
5829 if (weak_undef_p
&& ! via_plt_p
)
5831 bfd_putl32 (INSN_NOP
, hit_data
);
5832 return bfd_reloc_ok
;
5835 /* If the call goes through a PLT entry, make sure to
5836 check distance to the right destination address. */
5838 value
= (splt
->output_section
->vma
5839 + splt
->output_offset
+ h
->plt
.offset
);
5841 /* Check if a stub has to be inserted because the destination
5843 struct elf_aarch64_stub_hash_entry
*stub_entry
= NULL
;
5845 /* If the branch destination is directed to plt stub, "value" will be
5846 the final destination, otherwise we should plus signed_addend, it may
5847 contain non-zero value, for example call to local function symbol
5848 which are turned into "sec_sym + sec_off", and sec_off is kept in
5850 if (! aarch64_valid_branch_p (via_plt_p
? value
: value
+ signed_addend
,
5852 /* The target is out of reach, so redirect the branch to
5853 the local stub for this function. */
5854 stub_entry
= elfNN_aarch64_get_stub_entry (input_section
, sym_sec
, h
,
5856 if (stub_entry
!= NULL
)
5858 value
= (stub_entry
->stub_offset
5859 + stub_entry
->stub_sec
->output_offset
5860 + stub_entry
->stub_sec
->output_section
->vma
);
5862 /* We have redirected the destination to stub entry address,
5863 so ignore any addend record in the original rela entry. */
5867 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5869 signed_addend
, weak_undef_p
);
5870 *unresolved_reloc_p
= FALSE
;
5873 case BFD_RELOC_AARCH64_16_PCREL
:
5874 case BFD_RELOC_AARCH64_32_PCREL
:
5875 case BFD_RELOC_AARCH64_64_PCREL
:
5876 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
5877 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5878 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
5879 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
5880 case BFD_RELOC_AARCH64_MOVW_PREL_G0
:
5881 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC
:
5882 case BFD_RELOC_AARCH64_MOVW_PREL_G1
:
5883 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC
:
5884 case BFD_RELOC_AARCH64_MOVW_PREL_G2
:
5885 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC
:
5886 case BFD_RELOC_AARCH64_MOVW_PREL_G3
:
5887 if (bfd_link_pic (info
)
5888 && (input_section
->flags
& SEC_ALLOC
) != 0
5889 && (input_section
->flags
& SEC_READONLY
) != 0
5890 && !SYMBOL_REFERENCES_LOCAL (info
, h
))
5892 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5895 /* xgettext:c-format */
5896 (_("%pB: relocation %s against symbol `%s' which may bind "
5897 "externally can not be used when making a shared object; "
5898 "recompile with -fPIC"),
5899 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
5900 h
->root
.root
.string
);
5901 bfd_set_error (bfd_error_bad_value
);
5902 return bfd_reloc_notsupported
;
5906 case BFD_RELOC_AARCH64_16
:
5908 case BFD_RELOC_AARCH64_32
:
5910 case BFD_RELOC_AARCH64_ADD_LO12
:
5911 case BFD_RELOC_AARCH64_LDST128_LO12
:
5912 case BFD_RELOC_AARCH64_LDST16_LO12
:
5913 case BFD_RELOC_AARCH64_LDST32_LO12
:
5914 case BFD_RELOC_AARCH64_LDST64_LO12
:
5915 case BFD_RELOC_AARCH64_LDST8_LO12
:
5916 case BFD_RELOC_AARCH64_MOVW_G0
:
5917 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
5918 case BFD_RELOC_AARCH64_MOVW_G0_S
:
5919 case BFD_RELOC_AARCH64_MOVW_G1
:
5920 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
5921 case BFD_RELOC_AARCH64_MOVW_G1_S
:
5922 case BFD_RELOC_AARCH64_MOVW_G2
:
5923 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
5924 case BFD_RELOC_AARCH64_MOVW_G2_S
:
5925 case BFD_RELOC_AARCH64_MOVW_G3
:
5926 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5928 signed_addend
, weak_undef_p
);
5931 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5932 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5933 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5934 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5935 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5936 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5937 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5938 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5939 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5940 if (globals
->root
.sgot
== NULL
)
5941 BFD_ASSERT (h
!= NULL
);
5943 relative_reloc
= FALSE
;
5948 /* If a symbol is not dynamic and is not undefined weak, bind it
5949 locally and generate a RELATIVE relocation under PIC mode.
5951 NOTE: one symbol may be referenced by several relocations, we
5952 should only generate one RELATIVE relocation for that symbol.
5953 Therefore, check GOT offset mark first. */
5954 if (h
->dynindx
== -1
5956 && h
->root
.type
!= bfd_link_hash_undefweak
5957 && bfd_link_pic (info
)
5958 && !symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
5959 relative_reloc
= TRUE
;
5961 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
, value
,
5963 unresolved_reloc_p
);
5964 /* Record the GOT entry address which will be used when generating
5965 RELATIVE relocation. */
5967 got_entry_addr
= value
;
5969 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
5970 addend
= (globals
->root
.sgot
->output_section
->vma
5971 + globals
->root
.sgot
->output_offset
);
5972 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5974 addend
, weak_undef_p
);
5979 struct elf_aarch64_local_symbol
*locals
5980 = elf_aarch64_locals (input_bfd
);
5984 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5986 /* xgettext:c-format */
5987 (_("%pB: local symbol descriptor table be NULL when applying "
5988 "relocation %s against local symbol"),
5989 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
5993 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
5994 base_got
= globals
->root
.sgot
;
5995 got_entry_addr
= (base_got
->output_section
->vma
5996 + base_got
->output_offset
+ off
);
5998 if (!symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6000 bfd_put_64 (output_bfd
, value
, base_got
->contents
+ off
);
6002 /* For local symbol, we have done absolute relocation in static
6003 linking stage. While for shared library, we need to update the
6004 content of GOT entry according to the shared object's runtime
6005 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
6006 for dynamic linker. */
6007 if (bfd_link_pic (info
))
6008 relative_reloc
= TRUE
;
6010 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6013 /* Update the relocation value to GOT entry addr as we have transformed
6014 the direct data access into indirect data access through GOT. */
6015 value
= got_entry_addr
;
6017 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
6018 addend
= base_got
->output_section
->vma
+ base_got
->output_offset
;
6020 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6022 addend
, weak_undef_p
);
6028 Elf_Internal_Rela outrel
;
6030 s
= globals
->root
.srelgot
;
6034 outrel
.r_offset
= got_entry_addr
;
6035 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
6036 outrel
.r_addend
= orig_value
;
6037 elf_append_rela (output_bfd
, s
, &outrel
);
6041 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6042 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6043 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6044 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6045 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
6046 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
6047 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6048 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6049 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6050 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6051 if (globals
->root
.sgot
== NULL
)
6052 return bfd_reloc_notsupported
;
6054 value
= (symbol_got_offset (input_bfd
, h
, r_symndx
)
6055 + globals
->root
.sgot
->output_section
->vma
6056 + globals
->root
.sgot
->output_offset
);
6058 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6061 *unresolved_reloc_p
= FALSE
;
6064 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6065 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6066 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6067 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6068 if (globals
->root
.sgot
== NULL
)
6069 return bfd_reloc_notsupported
;
6071 value
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6072 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6075 *unresolved_reloc_p
= FALSE
;
6078 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12
:
6079 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12
:
6080 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC
:
6081 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12
:
6082 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC
:
6083 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12
:
6084 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC
:
6085 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12
:
6086 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC
:
6087 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12
:
6088 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC
:
6089 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0
:
6090 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC
:
6091 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1
:
6092 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC
:
6093 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2
:
6095 if (!(weak_undef_p
|| elf_hash_table (info
)->tls_sec
))
6097 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6099 /* xgettext:c-format */
6100 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6101 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
6102 h
->root
.root
.string
);
6103 bfd_set_error (bfd_error_bad_value
);
6104 return bfd_reloc_notsupported
;
6108 = weak_undef_p
? 0 : signed_addend
- dtpoff_base (info
);
6109 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6111 def_value
, weak_undef_p
);
6115 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
:
6116 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12
:
6117 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC
:
6118 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12
:
6119 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC
:
6120 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12
:
6121 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC
:
6122 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12
:
6123 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC
:
6124 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12
:
6125 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC
:
6126 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0
:
6127 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
:
6128 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
:
6129 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
:
6130 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
:
6132 if (!(weak_undef_p
|| elf_hash_table (info
)->tls_sec
))
6134 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6136 /* xgettext:c-format */
6137 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6138 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
6139 h
->root
.root
.string
);
6140 bfd_set_error (bfd_error_bad_value
);
6141 return bfd_reloc_notsupported
;
6145 = weak_undef_p
? 0 : signed_addend
- tpoff_base (info
);
6146 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6148 def_value
, weak_undef_p
);
6149 *unresolved_reloc_p
= FALSE
;
6153 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
6154 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6155 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6156 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
6157 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
6158 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6159 if (globals
->root
.sgot
== NULL
)
6160 return bfd_reloc_notsupported
;
6161 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
6162 + globals
->root
.sgotplt
->output_section
->vma
6163 + globals
->root
.sgotplt
->output_offset
6164 + globals
->sgotplt_jump_table_size
);
6166 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6169 *unresolved_reloc_p
= FALSE
;
6172 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6173 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6174 if (globals
->root
.sgot
== NULL
)
6175 return bfd_reloc_notsupported
;
6177 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
6178 + globals
->root
.sgotplt
->output_section
->vma
6179 + globals
->root
.sgotplt
->output_offset
6180 + globals
->sgotplt_jump_table_size
);
6182 value
-= (globals
->root
.sgot
->output_section
->vma
6183 + globals
->root
.sgot
->output_offset
);
6185 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6188 *unresolved_reloc_p
= FALSE
;
6192 return bfd_reloc_notsupported
;
6196 *saved_addend
= value
;
6198 /* Only apply the final relocation in a sequence. */
6200 return bfd_reloc_continue
;
6202 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
6206 /* LP64 and ILP32 operates on x- and w-registers respectively.
6207 Next definitions take into account the difference between
6208 corresponding machine codes. R means x-register if the target
6209 arch is LP64, and w-register if the target is ILP32. */
6212 # define add_R0_R0 (0x91000000)
6213 # define add_R0_R0_R1 (0x8b000020)
6214 # define add_R0_R1 (0x91400020)
6215 # define ldr_R0 (0x58000000)
6216 # define ldr_R0_mask(i) (i & 0xffffffe0)
6217 # define ldr_R0_x0 (0xf9400000)
6218 # define ldr_hw_R0 (0xf2a00000)
6219 # define movk_R0 (0xf2800000)
6220 # define movz_R0 (0xd2a00000)
6221 # define movz_hw_R0 (0xd2c00000)
6222 #else /*ARCH_SIZE == 32 */
6223 # define add_R0_R0 (0x11000000)
6224 # define add_R0_R0_R1 (0x0b000020)
6225 # define add_R0_R1 (0x11400020)
6226 # define ldr_R0 (0x18000000)
6227 # define ldr_R0_mask(i) (i & 0xbfffffe0)
6228 # define ldr_R0_x0 (0xb9400000)
6229 # define ldr_hw_R0 (0x72a00000)
6230 # define movk_R0 (0x72800000)
6231 # define movz_R0 (0x52a00000)
6232 # define movz_hw_R0 (0x52c00000)
6235 /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub,
6236 it is used to identify the stub information to reset. */
6238 struct erratum_843419_branch_to_stub_clear_data
6240 bfd_vma adrp_offset
;
6241 asection
*output_section
;
6244 /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and
6245 section inside IN_ARG matches. The clearing is done by setting the
6246 stub_type to none. */
6249 _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry
*gen_entry
,
6252 struct elf_aarch64_stub_hash_entry
*stub_entry
6253 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
6254 struct erratum_843419_branch_to_stub_clear_data
*data
6255 = (struct erratum_843419_branch_to_stub_clear_data
*) in_arg
;
6257 if (stub_entry
->target_section
!= data
->output_section
6258 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
6259 || stub_entry
->adrp_offset
!= data
->adrp_offset
)
6262 /* Change the stub type instead of removing the entry, removing from the hash
6263 table would be slower and we have already reserved the memory for the entry
6264 so there wouldn't be much gain. Changing the stub also keeps around a
6265 record of what was there before. */
6266 stub_entry
->stub_type
= aarch64_stub_none
;
6268 /* We're done and there could have been only one matching stub at that
6269 particular offset, so abort further traversal. */
6273 /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419
6274 sequence. In this case the erratum no longer applies and we need to remove
6275 the entry from the pending stub generation. This clears matching adrp insn
6276 at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */
6279 clear_erratum_843419_entry (struct elf_aarch64_link_hash_table
*globals
,
6280 bfd_vma adrp_offset
, asection
*input_section
)
6282 if (globals
->fix_erratum_843419
& ERRAT_ADRP
)
6284 struct erratum_843419_branch_to_stub_clear_data data
;
6285 data
.adrp_offset
= adrp_offset
;
6286 data
.output_section
= input_section
;
6288 bfd_hash_traverse (&globals
->stub_hash_table
,
6289 _bfd_aarch64_erratum_843419_clear_stub
, &data
);
6293 /* Handle TLS relaxations. Relaxing is possible for symbols that use
6294 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
6297 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
6298 is to then call final_link_relocate. Return other values in the
6301 static bfd_reloc_status_type
6302 elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table
*globals
,
6303 bfd
*input_bfd
, asection
*input_section
,
6304 bfd_byte
*contents
, Elf_Internal_Rela
*rel
,
6305 struct elf_link_hash_entry
*h
)
6307 bfd_boolean is_local
= h
== NULL
;
6308 unsigned int r_type
= ELFNN_R_TYPE (rel
->r_info
);
6311 BFD_ASSERT (globals
&& input_bfd
&& contents
&& rel
);
6313 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
))
6315 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6316 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6319 /* GD->LE relaxation:
6320 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
6322 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
6324 Where R is x for LP64, and w for ILP32. */
6325 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
6326 /* We have relaxed the adrp into a mov, we may have to clear any
6327 pending erratum fixes. */
6328 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
6329 return bfd_reloc_continue
;
6333 /* GD->IE relaxation:
6334 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
6336 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
6338 return bfd_reloc_continue
;
6341 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6345 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6348 /* Tiny TLSDESC->LE relaxation:
6349 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
6350 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
6354 Where R is x for LP64, and w for ILP32. */
6355 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
6356 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
6358 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6359 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
6360 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6362 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
6363 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
+ 4);
6364 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
6365 return bfd_reloc_continue
;
6369 /* Tiny TLSDESC->IE relaxation:
6370 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
6371 adr x0, :tlsdesc:var => nop
6375 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
6376 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
6378 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6379 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6381 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
);
6382 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
6383 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
6384 return bfd_reloc_continue
;
6387 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6390 /* Tiny GD->LE relaxation:
6391 adr x0, :tlsgd:var => mrs x1, tpidr_el0
6392 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
6393 nop => add R0, R0, #:tprel_lo12_nc:x
6395 Where R is x for LP64, and x for Ilp32. */
6397 /* First kill the tls_get_addr reloc on the bl instruction. */
6398 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6400 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 0);
6401 bfd_putl32 (add_R0_R1
, contents
+ rel
->r_offset
+ 4);
6402 bfd_putl32 (add_R0_R0
, contents
+ rel
->r_offset
+ 8);
6404 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6405 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
));
6406 rel
[1].r_offset
= rel
->r_offset
+ 8;
6408 /* Move the current relocation to the second instruction in
6411 rel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6412 AARCH64_R (TLSLE_ADD_TPREL_HI12
));
6413 return bfd_reloc_continue
;
6417 /* Tiny GD->IE relaxation:
6418 adr x0, :tlsgd:var => ldr R0, :gottprel:var
6419 bl __tls_get_addr => mrs x1, tpidr_el0
6420 nop => add R0, R0, R1
6422 Where R is x for LP64, and w for Ilp32. */
6424 /* First kill the tls_get_addr reloc on the bl instruction. */
6425 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6426 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6428 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
);
6429 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
6430 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 8);
6431 return bfd_reloc_continue
;
6435 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6436 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSGD_MOVW_G0_NC
));
6437 BFD_ASSERT (rel
->r_offset
+ 12 == rel
[2].r_offset
);
6438 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (CALL26
));
6442 /* Large GD->LE relaxation:
6443 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
6444 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
6445 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
6446 bl __tls_get_addr => mrs x1, tpidr_el0
6447 nop => add x0, x0, x1
6449 rel
[2].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6450 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
6451 rel
[2].r_offset
= rel
->r_offset
+ 8;
6453 bfd_putl32 (movz_hw_R0
, contents
+ rel
->r_offset
+ 0);
6454 bfd_putl32 (ldr_hw_R0
, contents
+ rel
->r_offset
+ 4);
6455 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
+ 8);
6456 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
6457 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 16);
6461 /* Large GD->IE relaxation:
6462 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
6463 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
6464 add x0, gp, x0 => ldr x0, [gp, x0]
6465 bl __tls_get_addr => mrs x1, tpidr_el0
6466 nop => add x0, x0, x1
6468 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6469 bfd_putl32 (0xd2a80000, contents
+ rel
->r_offset
+ 0);
6470 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
+ 8);
6471 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
6472 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 16);
6474 return bfd_reloc_continue
;
6476 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6477 return bfd_reloc_continue
;
6480 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6481 return bfd_reloc_continue
;
6483 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
6486 /* GD->LE relaxation:
6487 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
6489 Where R is x for lp64 mode, and w for ILP32 mode. */
6490 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6491 return bfd_reloc_continue
;
6495 /* GD->IE relaxation:
6496 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
6498 Where R is x for lp64 mode, and w for ILP32 mode. */
6499 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6500 bfd_putl32 (ldr_R0_mask (insn
), contents
+ rel
->r_offset
);
6501 return bfd_reloc_continue
;
6504 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6507 /* GD->LE relaxation
6508 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
6509 bl __tls_get_addr => mrs x1, tpidr_el0
6510 nop => add R0, R1, R0
6512 Where R is x for lp64 mode, and w for ILP32 mode. */
6514 /* First kill the tls_get_addr reloc on the bl instruction. */
6515 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6516 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6518 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6519 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
6520 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 8);
6521 return bfd_reloc_continue
;
6525 /* GD->IE relaxation
6526 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6527 BL __tls_get_addr => mrs x1, tpidr_el0
6529 NOP => add R0, R1, R0
6531 Where R is x for lp64 mode, and w for ilp32 mode. */
6533 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6535 /* Remove the relocation on the BL instruction. */
6536 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6538 /* We choose to fixup the BL and NOP instructions using the
6539 offset from the second relocation to allow flexibility in
6540 scheduling instructions between the ADD and BL. */
6541 bfd_putl32 (ldr_R0_x0
, contents
+ rel
->r_offset
);
6542 bfd_putl32 (0xd53bd041, contents
+ rel
[1].r_offset
);
6543 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
[1].r_offset
+ 4);
6544 return bfd_reloc_continue
;
6547 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
6548 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
6549 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
6550 /* GD->IE/LE relaxation:
6551 add x0, x0, #:tlsdesc_lo12:var => nop
6554 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
);
6555 return bfd_reloc_ok
;
6557 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
6560 /* GD->LE relaxation:
6561 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6563 Where R is x for lp64 mode, and w for ILP32 mode. */
6564 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6565 return bfd_reloc_continue
;
6569 /* GD->IE relaxation:
6570 ldr xd, [gp, xn] => ldr R0, [gp, xn]
6572 Where R is x for lp64 mode, and w for ILP32 mode. */
6573 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6574 bfd_putl32 (ldr_R0_mask (insn
), contents
+ rel
->r_offset
);
6575 return bfd_reloc_ok
;
6578 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6579 /* GD->LE relaxation:
6580 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
6582 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6584 Where R is x for lp64 mode, and w for ILP32 mode. */
6586 bfd_putl32 (ldr_hw_R0
, contents
+ rel
->r_offset
);
6587 return bfd_reloc_continue
;
6589 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6592 /* GD->LE relaxation:
6593 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6595 Where R is x for lp64 mode, and w for ILP32 mode. */
6596 bfd_putl32 (movz_hw_R0
, contents
+ rel
->r_offset
);
6597 return bfd_reloc_continue
;
6601 /* GD->IE relaxation:
6602 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6604 Where R is x for lp64 mode, and w for ILP32 mode. */
6605 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6606 bfd_putl32 (movz_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6607 return bfd_reloc_continue
;
6610 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6611 /* IE->LE relaxation:
6612 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
6614 Where R is x for lp64 mode, and w for ILP32 mode. */
6617 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6618 bfd_putl32 (movz_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6619 /* We have relaxed the adrp into a mov, we may have to clear any
6620 pending erratum fixes. */
6621 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
6623 return bfd_reloc_continue
;
6625 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
6626 /* IE->LE relaxation:
6627 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
6629 Where R is x for lp64 mode, and w for ILP32 mode. */
6632 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6633 bfd_putl32 (movk_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6635 return bfd_reloc_continue
;
6637 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6638 /* LD->LE relaxation (tiny):
6639 adr x0, :tlsldm:x => mrs x0, tpidr_el0
6640 bl __tls_get_addr => add R0, R0, TCB_SIZE
6642 Where R is x for lp64 mode, and w for ilp32 mode. */
6645 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6646 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6647 /* No need of CALL26 relocation for tls_get_addr. */
6648 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6649 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
+ 0);
6650 bfd_putl32 (add_R0_R0
| (TCB_SIZE
<< 10),
6651 contents
+ rel
->r_offset
+ 4);
6652 return bfd_reloc_ok
;
6654 return bfd_reloc_continue
;
6656 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6657 /* LD->LE relaxation (small):
6658 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6662 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
);
6663 return bfd_reloc_ok
;
6665 return bfd_reloc_continue
;
6667 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6668 /* LD->LE relaxation (small):
6669 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
6670 bl __tls_get_addr => nop
6672 Where R is x for lp64 mode, and w for ilp32 mode. */
6675 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6676 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6677 /* No need of CALL26 relocation for tls_get_addr. */
6678 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6679 bfd_putl32 (add_R0_R0
| (TCB_SIZE
<< 10),
6680 contents
+ rel
->r_offset
+ 0);
6681 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
6682 return bfd_reloc_ok
;
6684 return bfd_reloc_continue
;
6687 return bfd_reloc_continue
;
6690 return bfd_reloc_ok
;
6693 /* Relocate an AArch64 ELF section. */
6696 elfNN_aarch64_relocate_section (bfd
*output_bfd
,
6697 struct bfd_link_info
*info
,
6699 asection
*input_section
,
6701 Elf_Internal_Rela
*relocs
,
6702 Elf_Internal_Sym
*local_syms
,
6703 asection
**local_sections
)
6705 Elf_Internal_Shdr
*symtab_hdr
;
6706 struct elf_link_hash_entry
**sym_hashes
;
6707 Elf_Internal_Rela
*rel
;
6708 Elf_Internal_Rela
*relend
;
6710 struct elf_aarch64_link_hash_table
*globals
;
6711 bfd_boolean save_addend
= FALSE
;
6714 globals
= elf_aarch64_hash_table (info
);
6716 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
6717 sym_hashes
= elf_sym_hashes (input_bfd
);
6720 relend
= relocs
+ input_section
->reloc_count
;
6721 for (; rel
< relend
; rel
++)
6723 unsigned int r_type
;
6724 bfd_reloc_code_real_type bfd_r_type
;
6725 bfd_reloc_code_real_type relaxed_bfd_r_type
;
6726 reloc_howto_type
*howto
;
6727 unsigned long r_symndx
;
6728 Elf_Internal_Sym
*sym
;
6730 struct elf_link_hash_entry
*h
;
6732 bfd_reloc_status_type r
;
6735 bfd_boolean unresolved_reloc
= FALSE
;
6736 char *error_message
= NULL
;
6738 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
6739 r_type
= ELFNN_R_TYPE (rel
->r_info
);
6741 bfd_reloc
.howto
= elfNN_aarch64_howto_from_type (input_bfd
, r_type
);
6742 howto
= bfd_reloc
.howto
;
6745 return _bfd_unrecognized_reloc (input_bfd
, input_section
, r_type
);
6747 bfd_r_type
= elfNN_aarch64_bfd_reloc_from_howto (howto
);
6753 if (r_symndx
< symtab_hdr
->sh_info
)
6755 sym
= local_syms
+ r_symndx
;
6756 sym_type
= ELFNN_ST_TYPE (sym
->st_info
);
6757 sec
= local_sections
[r_symndx
];
6759 /* An object file might have a reference to a local
6760 undefined symbol. This is a daft object file, but we
6761 should at least do something about it. */
6762 if (r_type
!= R_AARCH64_NONE
&& r_type
!= R_AARCH64_NULL
6763 && bfd_is_und_section (sec
)
6764 && ELF_ST_BIND (sym
->st_info
) != STB_WEAK
)
6765 (*info
->callbacks
->undefined_symbol
)
6766 (info
, bfd_elf_string_from_elf_section
6767 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
),
6768 input_bfd
, input_section
, rel
->r_offset
, TRUE
);
6770 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6772 /* Relocate against local STT_GNU_IFUNC symbol. */
6773 if (!bfd_link_relocatable (info
)
6774 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
6776 h
= elfNN_aarch64_get_local_sym_hash (globals
, input_bfd
,
6781 /* Set STT_GNU_IFUNC symbol value. */
6782 h
->root
.u
.def
.value
= sym
->st_value
;
6783 h
->root
.u
.def
.section
= sec
;
6788 bfd_boolean warned
, ignored
;
6790 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6791 r_symndx
, symtab_hdr
, sym_hashes
,
6793 unresolved_reloc
, warned
, ignored
);
6798 if (sec
!= NULL
&& discarded_section (sec
))
6799 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
6800 rel
, 1, relend
, howto
, 0, contents
);
6802 if (bfd_link_relocatable (info
))
6806 name
= h
->root
.root
.string
;
6809 name
= (bfd_elf_string_from_elf_section
6810 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
6811 if (name
== NULL
|| *name
== '\0')
6812 name
= bfd_section_name (sec
);
6816 && r_type
!= R_AARCH64_NONE
6817 && r_type
!= R_AARCH64_NULL
6819 || h
->root
.type
== bfd_link_hash_defined
6820 || h
->root
.type
== bfd_link_hash_defweak
)
6821 && IS_AARCH64_TLS_RELOC (bfd_r_type
) != (sym_type
== STT_TLS
))
6824 ((sym_type
== STT_TLS
6825 /* xgettext:c-format */
6826 ? _("%pB(%pA+%#" PRIx64
"): %s used with TLS symbol %s")
6827 /* xgettext:c-format */
6828 : _("%pB(%pA+%#" PRIx64
"): %s used with non-TLS symbol %s")),
6830 input_section
, (uint64_t) rel
->r_offset
, howto
->name
, name
);
6833 /* We relax only if we can see that there can be a valid transition
6834 from a reloc type to another.
6835 We call elfNN_aarch64_final_link_relocate unless we're completely
6836 done, i.e., the relaxation produced the final output we want. */
6838 relaxed_bfd_r_type
= aarch64_tls_transition (input_bfd
, info
, r_type
,
6840 if (relaxed_bfd_r_type
!= bfd_r_type
)
6842 bfd_r_type
= relaxed_bfd_r_type
;
6843 howto
= elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type
);
6844 BFD_ASSERT (howto
!= NULL
);
6845 r_type
= howto
->type
;
6846 r
= elfNN_aarch64_tls_relax (globals
, input_bfd
, input_section
,
6848 unresolved_reloc
= 0;
6851 r
= bfd_reloc_continue
;
6853 /* There may be multiple consecutive relocations for the
6854 same offset. In that case we are supposed to treat the
6855 output of each relocation as the addend for the next. */
6856 if (rel
+ 1 < relend
6857 && rel
->r_offset
== rel
[1].r_offset
6858 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NONE
6859 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NULL
)
6862 save_addend
= FALSE
;
6864 if (r
== bfd_reloc_continue
)
6865 r
= elfNN_aarch64_final_link_relocate (howto
, input_bfd
, output_bfd
,
6866 input_section
, contents
, rel
,
6867 relocation
, info
, sec
,
6868 h
, &unresolved_reloc
,
6869 save_addend
, &addend
, sym
);
6871 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
))
6873 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6874 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6875 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6876 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6877 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6878 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6879 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6880 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6881 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6883 bfd_boolean need_relocs
= FALSE
;
6888 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6889 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6892 (!bfd_link_executable (info
) || indx
!= 0) &&
6894 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6895 || h
->root
.type
!= bfd_link_hash_undefweak
);
6897 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6901 Elf_Internal_Rela rela
;
6902 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPMOD
));
6904 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
6905 globals
->root
.sgot
->output_offset
+ off
;
6908 loc
= globals
->root
.srelgot
->contents
;
6909 loc
+= globals
->root
.srelgot
->reloc_count
++
6910 * RELOC_SIZE (htab
);
6911 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6913 bfd_reloc_code_real_type real_type
=
6914 elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
6916 if (real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
6917 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6918 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
)
6920 /* For local dynamic, don't generate DTPREL in any case.
6921 Initialize the DTPREL slot into zero, so we get module
6922 base address when invoke runtime TLS resolver. */
6923 bfd_put_NN (output_bfd
, 0,
6924 globals
->root
.sgot
->contents
+ off
6929 bfd_put_NN (output_bfd
,
6930 relocation
- dtpoff_base (info
),
6931 globals
->root
.sgot
->contents
+ off
6936 /* This TLS symbol is global. We emit a
6937 relocation to fixup the tls offset at load
6940 ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPREL
));
6943 (globals
->root
.sgot
->output_section
->vma
6944 + globals
->root
.sgot
->output_offset
+ off
6947 loc
= globals
->root
.srelgot
->contents
;
6948 loc
+= globals
->root
.srelgot
->reloc_count
++
6949 * RELOC_SIZE (globals
);
6950 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6951 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
6952 globals
->root
.sgot
->contents
+ off
6958 bfd_put_NN (output_bfd
, (bfd_vma
) 1,
6959 globals
->root
.sgot
->contents
+ off
);
6960 bfd_put_NN (output_bfd
,
6961 relocation
- dtpoff_base (info
),
6962 globals
->root
.sgot
->contents
+ off
6966 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6970 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6971 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
6972 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6973 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6974 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6975 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6977 bfd_boolean need_relocs
= FALSE
;
6982 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6984 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6987 (!bfd_link_executable (info
) || indx
!= 0) &&
6989 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6990 || h
->root
.type
!= bfd_link_hash_undefweak
);
6992 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6996 Elf_Internal_Rela rela
;
6999 rela
.r_addend
= relocation
- dtpoff_base (info
);
7003 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_TPREL
));
7004 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
7005 globals
->root
.sgot
->output_offset
+ off
;
7007 loc
= globals
->root
.srelgot
->contents
;
7008 loc
+= globals
->root
.srelgot
->reloc_count
++
7009 * RELOC_SIZE (htab
);
7011 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
7013 bfd_put_NN (output_bfd
, rela
.r_addend
,
7014 globals
->root
.sgot
->contents
+ off
);
7017 bfd_put_NN (output_bfd
, relocation
- tpoff_base (info
),
7018 globals
->root
.sgot
->contents
+ off
);
7020 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
7024 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
7025 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7026 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7027 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
7028 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7029 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7030 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7031 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd
, h
, r_symndx
))
7033 bfd_boolean need_relocs
= FALSE
;
7034 int indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
7035 bfd_vma off
= symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
);
7037 need_relocs
= (h
== NULL
7038 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7039 || h
->root
.type
!= bfd_link_hash_undefweak
);
7041 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
7042 BFD_ASSERT (globals
->root
.sgot
!= NULL
);
7047 Elf_Internal_Rela rela
;
7048 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLSDESC
));
7051 rela
.r_offset
= (globals
->root
.sgotplt
->output_section
->vma
7052 + globals
->root
.sgotplt
->output_offset
7053 + off
+ globals
->sgotplt_jump_table_size
);
7056 rela
.r_addend
= relocation
- dtpoff_base (info
);
7058 /* Allocate the next available slot in the PLT reloc
7059 section to hold our R_AARCH64_TLSDESC, the next
7060 available slot is determined from reloc_count,
7061 which we step. But note, reloc_count was
7062 artifically moved down while allocating slots for
7063 real PLT relocs such that all of the PLT relocs
7064 will fit above the initial reloc_count and the
7065 extra stuff will fit below. */
7066 loc
= globals
->root
.srelplt
->contents
;
7067 loc
+= globals
->root
.srelplt
->reloc_count
++
7068 * RELOC_SIZE (globals
);
7070 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
7072 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
7073 globals
->root
.sgotplt
->contents
+ off
+
7074 globals
->sgotplt_jump_table_size
);
7075 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
7076 globals
->root
.sgotplt
->contents
+ off
+
7077 globals
->sgotplt_jump_table_size
+
7081 symbol_tlsdesc_got_offset_mark (input_bfd
, h
, r_symndx
);
7088 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7089 because such sections are not SEC_ALLOC and thus ld.so will
7090 not process them. */
7091 if (unresolved_reloc
7092 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
7094 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
7095 +rel
->r_offset
) != (bfd_vma
) - 1)
7098 /* xgettext:c-format */
7099 (_("%pB(%pA+%#" PRIx64
"): "
7100 "unresolvable %s relocation against symbol `%s'"),
7101 input_bfd
, input_section
, (uint64_t) rel
->r_offset
, howto
->name
,
7102 h
->root
.root
.string
);
7106 if (r
!= bfd_reloc_ok
&& r
!= bfd_reloc_continue
)
7108 bfd_reloc_code_real_type real_r_type
7109 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
7113 case bfd_reloc_overflow
:
7114 (*info
->callbacks
->reloc_overflow
)
7115 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
, (bfd_vma
) 0,
7116 input_bfd
, input_section
, rel
->r_offset
);
7117 if (real_r_type
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
7118 || real_r_type
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
)
7120 (*info
->callbacks
->warning
)
7122 _("too many GOT entries for -fpic, "
7123 "please recompile with -fPIC"),
7124 name
, input_bfd
, input_section
, rel
->r_offset
);
7127 /* Overflow can occur when a variable is referenced with a type
7128 that has a larger alignment than the type with which it was
7130 file1.c: extern int foo; int a (void) { return foo; }
7131 file2.c: char bar, foo, baz;
7132 If the variable is placed into a data section at an offset
7133 that is incompatible with the larger alignment requirement
7134 overflow will occur. (Strictly speaking this is not overflow
7135 but rather an alignment problem, but the bfd_reloc_ error
7136 enum does not have a value to cover that situation).
7138 Try to catch this situation here and provide a more helpful
7139 error message to the user. */
7140 if (addend
& ((1 << howto
->rightshift
) - 1)
7141 /* FIXME: Are we testing all of the appropriate reloc
7143 && (real_r_type
== BFD_RELOC_AARCH64_LD_LO19_PCREL
7144 || real_r_type
== BFD_RELOC_AARCH64_LDST16_LO12
7145 || real_r_type
== BFD_RELOC_AARCH64_LDST32_LO12
7146 || real_r_type
== BFD_RELOC_AARCH64_LDST64_LO12
7147 || real_r_type
== BFD_RELOC_AARCH64_LDST128_LO12
))
7149 info
->callbacks
->warning
7150 (info
, _("one possible cause of this error is that the \
7151 symbol is being referenced in the indicated code as if it had a larger \
7152 alignment than was declared where it was defined"),
7153 name
, input_bfd
, input_section
, rel
->r_offset
);
7157 case bfd_reloc_undefined
:
7158 (*info
->callbacks
->undefined_symbol
)
7159 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
7162 case bfd_reloc_outofrange
:
7163 error_message
= _("out of range");
7166 case bfd_reloc_notsupported
:
7167 error_message
= _("unsupported relocation");
7170 case bfd_reloc_dangerous
:
7171 /* error_message should already be set. */
7175 error_message
= _("unknown error");
7179 BFD_ASSERT (error_message
!= NULL
);
7180 (*info
->callbacks
->reloc_dangerous
)
7181 (info
, error_message
, input_bfd
, input_section
, rel
->r_offset
);
7193 /* Set the right machine number. */
7196 elfNN_aarch64_object_p (bfd
*abfd
)
7199 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64_ilp32
);
7201 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64
);
7206 /* Function to keep AArch64 specific flags in the ELF header. */
7209 elfNN_aarch64_set_private_flags (bfd
*abfd
, flagword flags
)
7211 if (elf_flags_init (abfd
) && elf_elfheader (abfd
)->e_flags
!= flags
)
7216 elf_elfheader (abfd
)->e_flags
= flags
;
7217 elf_flags_init (abfd
) = TRUE
;
7223 /* Merge backend specific data from an object file to the output
7224 object file when linking. */
7227 elfNN_aarch64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
7229 bfd
*obfd
= info
->output_bfd
;
7232 bfd_boolean flags_compatible
= TRUE
;
7235 /* Check if we have the same endianess. */
7236 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
7239 if (!is_aarch64_elf (ibfd
) || !is_aarch64_elf (obfd
))
7242 /* The input BFD must have had its flags initialised. */
7243 /* The following seems bogus to me -- The flags are initialized in
7244 the assembler but I don't think an elf_flags_init field is
7245 written into the object. */
7246 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7248 in_flags
= elf_elfheader (ibfd
)->e_flags
;
7249 out_flags
= elf_elfheader (obfd
)->e_flags
;
7251 if (!elf_flags_init (obfd
))
7253 /* If the input is the default architecture and had the default
7254 flags then do not bother setting the flags for the output
7255 architecture, instead allow future merges to do this. If no
7256 future merges ever set these flags then they will retain their
7257 uninitialised values, which surprise surprise, correspond
7258 to the default values. */
7259 if (bfd_get_arch_info (ibfd
)->the_default
7260 && elf_elfheader (ibfd
)->e_flags
== 0)
7263 elf_flags_init (obfd
) = TRUE
;
7264 elf_elfheader (obfd
)->e_flags
= in_flags
;
7266 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
7267 && bfd_get_arch_info (obfd
)->the_default
)
7268 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
7269 bfd_get_mach (ibfd
));
7274 /* Identical flags must be compatible. */
7275 if (in_flags
== out_flags
)
7278 /* Check to see if the input BFD actually contains any sections. If
7279 not, its flags may not have been initialised either, but it
7280 cannot actually cause any incompatiblity. Do not short-circuit
7281 dynamic objects; their section list may be emptied by
7282 elf_link_add_object_symbols.
7284 Also check to see if there are no code sections in the input.
7285 In this case there is no need to check for code specific flags.
7286 XXX - do we need to worry about floating-point format compatability
7287 in data sections ? */
7288 if (!(ibfd
->flags
& DYNAMIC
))
7290 bfd_boolean null_input_bfd
= TRUE
;
7291 bfd_boolean only_data_sections
= TRUE
;
7293 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7295 if ((bfd_section_flags (sec
)
7296 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7297 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7298 only_data_sections
= FALSE
;
7300 null_input_bfd
= FALSE
;
7304 if (null_input_bfd
|| only_data_sections
)
7308 return flags_compatible
;
7311 /* Display the flags field. */
7314 elfNN_aarch64_print_private_bfd_data (bfd
*abfd
, void *ptr
)
7316 FILE *file
= (FILE *) ptr
;
7317 unsigned long flags
;
7319 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
7321 /* Print normal ELF private data. */
7322 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
7324 flags
= elf_elfheader (abfd
)->e_flags
;
7325 /* Ignore init flag - it may not be set, despite the flags field
7326 containing valid data. */
7328 /* xgettext:c-format */
7329 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
7332 fprintf (file
, _("<Unrecognised flag bits set>"));
7339 /* Return true if we need copy relocation against EH. */
7342 need_copy_relocation_p (struct elf_aarch64_link_hash_entry
*eh
)
7344 struct elf_dyn_relocs
*p
;
7347 for (p
= eh
->root
.dyn_relocs
; p
!= NULL
; p
= p
->next
)
7349 /* If there is any pc-relative reference, we need to keep copy relocation
7350 to avoid propagating the relocation into runtime that current glibc
7351 does not support. */
7355 s
= p
->sec
->output_section
;
7356 /* Need copy relocation if it's against read-only section. */
7357 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7364 /* Adjust a symbol defined by a dynamic object and referenced by a
7365 regular object. The current definition is in some section of the
7366 dynamic object, but we're not including those sections. We have to
7367 change the definition to something the rest of the link can
7371 elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7372 struct elf_link_hash_entry
*h
)
7374 struct elf_aarch64_link_hash_table
*htab
;
7377 /* If this is a function, put it in the procedure linkage table. We
7378 will fill in the contents of the procedure linkage table later,
7379 when we know the address of the .got section. */
7380 if (h
->type
== STT_FUNC
|| h
->type
== STT_GNU_IFUNC
|| h
->needs_plt
)
7382 if (h
->plt
.refcount
<= 0
7383 || (h
->type
!= STT_GNU_IFUNC
7384 && (SYMBOL_CALLS_LOCAL (info
, h
)
7385 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7386 && h
->root
.type
== bfd_link_hash_undefweak
))))
7388 /* This case can occur if we saw a CALL26 reloc in
7389 an input file, but the symbol wasn't referred to
7390 by a dynamic object or all references were
7391 garbage collected. In which case we can end up
7393 h
->plt
.offset
= (bfd_vma
) - 1;
7400 /* Otherwise, reset to -1. */
7401 h
->plt
.offset
= (bfd_vma
) - 1;
7404 /* If this is a weak symbol, and there is a real definition, the
7405 processor independent code will have arranged for us to see the
7406 real definition first, and we can just use the same value. */
7407 if (h
->is_weakalias
)
7409 struct elf_link_hash_entry
*def
= weakdef (h
);
7410 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
7411 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
7412 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
7413 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
7414 h
->non_got_ref
= def
->non_got_ref
;
7418 /* If we are creating a shared library, we must presume that the
7419 only references to the symbol are via the global offset table.
7420 For such cases we need not do anything here; the relocations will
7421 be handled correctly by relocate_section. */
7422 if (bfd_link_pic (info
))
7425 /* If there are no references to this symbol that do not use the
7426 GOT, we don't need to generate a copy reloc. */
7427 if (!h
->non_got_ref
)
7430 /* If -z nocopyreloc was given, we won't generate them either. */
7431 if (info
->nocopyreloc
)
7437 if (ELIMINATE_COPY_RELOCS
)
7439 struct elf_aarch64_link_hash_entry
*eh
;
7440 /* If we don't find any dynamic relocs in read-only sections, then
7441 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7442 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
7443 if (!need_copy_relocation_p (eh
))
7450 /* We must allocate the symbol in our .dynbss section, which will
7451 become part of the .bss section of the executable. There will be
7452 an entry for this symbol in the .dynsym section. The dynamic
7453 object will contain position independent code, so all references
7454 from the dynamic object to this symbol will go through the global
7455 offset table. The dynamic linker will use the .dynsym entry to
7456 determine the address it must put in the global offset table, so
7457 both the dynamic object and the regular object will refer to the
7458 same memory location for the variable. */
7460 htab
= elf_aarch64_hash_table (info
);
7462 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
7463 to copy the initial value out of the dynamic object and into the
7464 runtime process image. */
7465 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7467 s
= htab
->root
.sdynrelro
;
7468 srel
= htab
->root
.sreldynrelro
;
7472 s
= htab
->root
.sdynbss
;
7473 srel
= htab
->root
.srelbss
;
7475 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7477 srel
->size
+= RELOC_SIZE (htab
);
7481 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7486 elfNN_aarch64_allocate_local_symbols (bfd
*abfd
, unsigned number
)
7488 struct elf_aarch64_local_symbol
*locals
;
7489 locals
= elf_aarch64_locals (abfd
);
7492 locals
= (struct elf_aarch64_local_symbol
*)
7493 bfd_zalloc (abfd
, number
* sizeof (struct elf_aarch64_local_symbol
));
7496 elf_aarch64_locals (abfd
) = locals
;
7501 /* Create the .got section to hold the global offset table. */
7504 aarch64_elf_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
7506 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
7509 struct elf_link_hash_entry
*h
;
7510 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7512 /* This function may be called more than once. */
7513 if (htab
->sgot
!= NULL
)
7516 flags
= bed
->dynamic_sec_flags
;
7518 s
= bfd_make_section_anyway_with_flags (abfd
,
7519 (bed
->rela_plts_and_copies_p
7520 ? ".rela.got" : ".rel.got"),
7521 (bed
->dynamic_sec_flags
7524 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7528 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
7530 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7533 htab
->sgot
->size
+= GOT_ENTRY_SIZE
;
7535 if (bed
->want_got_sym
)
7537 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7538 (or .got.plt) section. We don't do this in the linker script
7539 because we don't want to define the symbol if we are not creating
7540 a global offset table. */
7541 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
,
7542 "_GLOBAL_OFFSET_TABLE_");
7543 elf_hash_table (info
)->hgot
= h
;
7548 if (bed
->want_got_plt
)
7550 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
7552 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7557 /* The first bit of the global offset table is the header. */
7558 s
->size
+= bed
->got_header_size
;
7563 /* Look through the relocs for a section during the first phase. */
7566 elfNN_aarch64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
7567 asection
*sec
, const Elf_Internal_Rela
*relocs
)
7569 Elf_Internal_Shdr
*symtab_hdr
;
7570 struct elf_link_hash_entry
**sym_hashes
;
7571 const Elf_Internal_Rela
*rel
;
7572 const Elf_Internal_Rela
*rel_end
;
7575 struct elf_aarch64_link_hash_table
*htab
;
7577 if (bfd_link_relocatable (info
))
7580 BFD_ASSERT (is_aarch64_elf (abfd
));
7582 htab
= elf_aarch64_hash_table (info
);
7585 symtab_hdr
= &elf_symtab_hdr (abfd
);
7586 sym_hashes
= elf_sym_hashes (abfd
);
7588 rel_end
= relocs
+ sec
->reloc_count
;
7589 for (rel
= relocs
; rel
< rel_end
; rel
++)
7591 struct elf_link_hash_entry
*h
;
7592 unsigned int r_symndx
;
7593 unsigned int r_type
;
7594 bfd_reloc_code_real_type bfd_r_type
;
7595 Elf_Internal_Sym
*isym
;
7597 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
7598 r_type
= ELFNN_R_TYPE (rel
->r_info
);
7600 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7602 /* xgettext:c-format */
7603 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd
, r_symndx
);
7607 if (r_symndx
< symtab_hdr
->sh_info
)
7609 /* A local symbol. */
7610 isym
= bfd_sym_from_r_symndx (&htab
->root
.sym_cache
,
7615 /* Check relocation against local STT_GNU_IFUNC symbol. */
7616 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
7618 h
= elfNN_aarch64_get_local_sym_hash (htab
, abfd
, rel
,
7623 /* Fake a STT_GNU_IFUNC symbol. */
7624 h
->type
= STT_GNU_IFUNC
;
7627 h
->forced_local
= 1;
7628 h
->root
.type
= bfd_link_hash_defined
;
7635 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7636 while (h
->root
.type
== bfd_link_hash_indirect
7637 || h
->root
.type
== bfd_link_hash_warning
)
7638 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7641 /* Could be done earlier, if h were already available. */
7642 bfd_r_type
= aarch64_tls_transition (abfd
, info
, r_type
, h
, r_symndx
);
7646 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7647 This shows up in particular in an R_AARCH64_PREL64 in large model
7648 when calculating the pc-relative address to .got section which is
7649 used to initialize the gp register. */
7650 if (h
->root
.root
.string
7651 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
7653 if (htab
->root
.dynobj
== NULL
)
7654 htab
->root
.dynobj
= abfd
;
7656 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
7659 BFD_ASSERT (h
== htab
->root
.hgot
);
7662 /* Create the ifunc sections for static executables. If we
7663 never see an indirect function symbol nor we are building
7664 a static executable, those sections will be empty and
7665 won't appear in output. */
7671 case BFD_RELOC_AARCH64_ADD_LO12
:
7672 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7673 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7674 case BFD_RELOC_AARCH64_CALL26
:
7675 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7676 case BFD_RELOC_AARCH64_JUMP26
:
7677 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7678 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7679 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7680 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7681 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7682 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7683 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7684 case BFD_RELOC_AARCH64_NN
:
7685 if (htab
->root
.dynobj
== NULL
)
7686 htab
->root
.dynobj
= abfd
;
7687 if (!_bfd_elf_create_ifunc_sections (htab
->root
.dynobj
, info
))
7692 /* It is referenced by a non-shared object. */
7698 case BFD_RELOC_AARCH64_16
:
7700 case BFD_RELOC_AARCH64_32
:
7702 if (bfd_link_pic (info
) && (sec
->flags
& SEC_ALLOC
) != 0)
7705 /* This is an absolute symbol. It represents a value instead
7707 && (bfd_is_abs_symbol (&h
->root
)
7708 /* This is an undefined symbol. */
7709 || h
->root
.type
== bfd_link_hash_undefined
))
7712 /* For local symbols, defined global symbols in a non-ABS section,
7713 it is assumed that the value is an address. */
7714 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7716 /* xgettext:c-format */
7717 (_("%pB: relocation %s against `%s' can not be used when making "
7719 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7720 (h
) ? h
->root
.root
.string
: "a local symbol");
7721 bfd_set_error (bfd_error_bad_value
);
7727 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
7728 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
7729 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
7730 case BFD_RELOC_AARCH64_MOVW_G3
:
7731 if (bfd_link_pic (info
))
7733 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7735 /* xgettext:c-format */
7736 (_("%pB: relocation %s against `%s' can not be used when making "
7737 "a shared object; recompile with -fPIC"),
7738 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7739 (h
) ? h
->root
.root
.string
: "a local symbol");
7740 bfd_set_error (bfd_error_bad_value
);
7745 case BFD_RELOC_AARCH64_16_PCREL
:
7746 case BFD_RELOC_AARCH64_32_PCREL
:
7747 case BFD_RELOC_AARCH64_64_PCREL
:
7748 case BFD_RELOC_AARCH64_ADD_LO12
:
7749 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
7750 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7751 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
7752 case BFD_RELOC_AARCH64_LDST128_LO12
:
7753 case BFD_RELOC_AARCH64_LDST16_LO12
:
7754 case BFD_RELOC_AARCH64_LDST32_LO12
:
7755 case BFD_RELOC_AARCH64_LDST64_LO12
:
7756 case BFD_RELOC_AARCH64_LDST8_LO12
:
7757 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
7758 if (h
== NULL
|| bfd_link_pic (info
))
7762 case BFD_RELOC_AARCH64_NN
:
7764 /* We don't need to handle relocs into sections not going into
7765 the "real" output. */
7766 if ((sec
->flags
& SEC_ALLOC
) == 0)
7771 if (!bfd_link_pic (info
))
7774 h
->plt
.refcount
+= 1;
7775 h
->pointer_equality_needed
= 1;
7778 /* No need to do anything if we're not creating a shared
7780 if (!(bfd_link_pic (info
)
7781 /* If on the other hand, we are creating an executable, we
7782 may need to keep relocations for symbols satisfied by a
7783 dynamic library if we manage to avoid copy relocs for the
7786 NOTE: Currently, there is no support of copy relocs
7787 elimination on pc-relative relocation types, because there is
7788 no dynamic relocation support for them in glibc. We still
7789 record the dynamic symbol reference for them. This is
7790 because one symbol may be referenced by both absolute
7791 relocation (for example, BFD_RELOC_AARCH64_NN) and
7792 pc-relative relocation. We need full symbol reference
7793 information to make correct decision later in
7794 elfNN_aarch64_adjust_dynamic_symbol. */
7795 || (ELIMINATE_COPY_RELOCS
7796 && !bfd_link_pic (info
)
7798 && (h
->root
.type
== bfd_link_hash_defweak
7799 || !h
->def_regular
))))
7803 struct elf_dyn_relocs
*p
;
7804 struct elf_dyn_relocs
**head
;
7805 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7807 /* We must copy these reloc types into the output file.
7808 Create a reloc section in dynobj and make room for
7812 if (htab
->root
.dynobj
== NULL
)
7813 htab
->root
.dynobj
= abfd
;
7815 sreloc
= _bfd_elf_make_dynamic_reloc_section
7816 (sec
, htab
->root
.dynobj
, LOG_FILE_ALIGN
, abfd
, /*rela? */ TRUE
);
7822 /* If this is a global symbol, we count the number of
7823 relocations we need for this symbol. */
7826 head
= &h
->dyn_relocs
;
7830 /* Track dynamic relocs needed for local syms too.
7831 We really need local syms available to do this
7837 isym
= bfd_sym_from_r_symndx (&htab
->root
.sym_cache
,
7842 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
7846 /* Beware of type punned pointers vs strict aliasing
7848 vpp
= &(elf_section_data (s
)->local_dynrel
);
7849 head
= (struct elf_dyn_relocs
**) vpp
;
7853 if (p
== NULL
|| p
->sec
!= sec
)
7855 size_t amt
= sizeof *p
;
7856 p
= ((struct elf_dyn_relocs
*)
7857 bfd_zalloc (htab
->root
.dynobj
, amt
));
7867 if (elfNN_aarch64_howto_table
[howto_index
].pc_relative
)
7872 /* RR: We probably want to keep a consistency check that
7873 there are no dangling GOT_PAGE relocs. */
7874 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7875 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7876 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7877 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7878 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7879 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7880 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7881 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7882 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7883 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
7884 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7885 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7886 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
7887 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
7888 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7889 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7890 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7891 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
7892 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
7893 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
7894 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
7895 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
7896 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
7897 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
7898 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
7899 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
7900 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
7901 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
7902 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
7903 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
7904 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
7907 unsigned old_got_type
;
7909 got_type
= aarch64_reloc_got_type (bfd_r_type
);
7913 h
->got
.refcount
+= 1;
7914 old_got_type
= elf_aarch64_hash_entry (h
)->got_type
;
7918 struct elf_aarch64_local_symbol
*locals
;
7920 if (!elfNN_aarch64_allocate_local_symbols
7921 (abfd
, symtab_hdr
->sh_info
))
7924 locals
= elf_aarch64_locals (abfd
);
7925 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7926 locals
[r_symndx
].got_refcount
+= 1;
7927 old_got_type
= locals
[r_symndx
].got_type
;
7930 /* If a variable is accessed with both general dynamic TLS
7931 methods, two slots may be created. */
7932 if (GOT_TLS_GD_ANY_P (old_got_type
) && GOT_TLS_GD_ANY_P (got_type
))
7933 got_type
|= old_got_type
;
7935 /* We will already have issued an error message if there
7936 is a TLS/non-TLS mismatch, based on the symbol type.
7937 So just combine any TLS types needed. */
7938 if (old_got_type
!= GOT_UNKNOWN
&& old_got_type
!= GOT_NORMAL
7939 && got_type
!= GOT_NORMAL
)
7940 got_type
|= old_got_type
;
7942 /* If the symbol is accessed by both IE and GD methods, we
7943 are able to relax. Turn off the GD flag, without
7944 messing up with any other kind of TLS types that may be
7946 if ((got_type
& GOT_TLS_IE
) && GOT_TLS_GD_ANY_P (got_type
))
7947 got_type
&= ~ (GOT_TLSDESC_GD
| GOT_TLS_GD
);
7949 if (old_got_type
!= got_type
)
7952 elf_aarch64_hash_entry (h
)->got_type
= got_type
;
7955 struct elf_aarch64_local_symbol
*locals
;
7956 locals
= elf_aarch64_locals (abfd
);
7957 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7958 locals
[r_symndx
].got_type
= got_type
;
7962 if (htab
->root
.dynobj
== NULL
)
7963 htab
->root
.dynobj
= abfd
;
7964 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
7969 case BFD_RELOC_AARCH64_BRANCH19
:
7970 case BFD_RELOC_AARCH64_TSTBR14
:
7971 case BFD_RELOC_AARCH64_CALL26
:
7972 case BFD_RELOC_AARCH64_JUMP26
:
7973 /* If this is a local symbol then we resolve it
7974 directly without creating a PLT entry. */
7979 if (h
->plt
.refcount
<= 0)
7980 h
->plt
.refcount
= 1;
7982 h
->plt
.refcount
+= 1;
7993 /* Treat mapping symbols as special target symbols. */
7996 elfNN_aarch64_is_target_special_symbol (bfd
*abfd ATTRIBUTE_UNUSED
,
7999 return bfd_is_aarch64_special_symbol_name (sym
->name
,
8000 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
);
8003 /* If the ELF symbol SYM might be a function in SEC, return the
8004 function size and set *CODE_OFF to the function's entry point,
8005 otherwise return zero. */
8007 static bfd_size_type
8008 elfNN_aarch64_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
8013 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
8014 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0
8015 || sym
->section
!= sec
)
8018 if (!(sym
->flags
& BSF_SYNTHETIC
))
8019 switch (ELF_ST_TYPE (((elf_symbol_type
*) sym
)->internal_elf_sym
.st_info
))
8028 if ((sym
->flags
& BSF_LOCAL
)
8029 && bfd_is_aarch64_special_symbol_name (sym
->name
,
8030 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
))
8033 *code_off
= sym
->value
;
8035 if (!(sym
->flags
& BSF_SYNTHETIC
))
8036 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
8043 elfNN_aarch64_find_inliner_info (bfd
*abfd
,
8044 const char **filename_ptr
,
8045 const char **functionname_ptr
,
8046 unsigned int *line_ptr
)
8049 found
= _bfd_dwarf2_find_inliner_info
8050 (abfd
, filename_ptr
,
8051 functionname_ptr
, line_ptr
, &elf_tdata (abfd
)->dwarf2_find_line_info
);
8057 elfNN_aarch64_init_file_header (bfd
*abfd
, struct bfd_link_info
*link_info
)
8059 Elf_Internal_Ehdr
*i_ehdrp
; /* ELF file header, internal form. */
8061 if (!_bfd_elf_init_file_header (abfd
, link_info
))
8064 i_ehdrp
= elf_elfheader (abfd
);
8065 i_ehdrp
->e_ident
[EI_ABIVERSION
] = AARCH64_ELF_ABI_VERSION
;
8069 static enum elf_reloc_type_class
8070 elfNN_aarch64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
8071 const asection
*rel_sec ATTRIBUTE_UNUSED
,
8072 const Elf_Internal_Rela
*rela
)
8074 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
8076 if (htab
->root
.dynsym
!= NULL
8077 && htab
->root
.dynsym
->contents
!= NULL
)
8079 /* Check relocation against STT_GNU_IFUNC symbol if there are
8081 bfd
*abfd
= info
->output_bfd
;
8082 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
8083 unsigned long r_symndx
= ELFNN_R_SYM (rela
->r_info
);
8084 if (r_symndx
!= STN_UNDEF
)
8086 Elf_Internal_Sym sym
;
8087 if (!bed
->s
->swap_symbol_in (abfd
,
8088 (htab
->root
.dynsym
->contents
8089 + r_symndx
* bed
->s
->sizeof_sym
),
8092 /* xgettext:c-format */
8093 _bfd_error_handler (_("%pB symbol number %lu references"
8094 " nonexistent SHT_SYMTAB_SHNDX section"),
8096 /* Ideally an error class should be returned here. */
8098 else if (ELF_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
8099 return reloc_class_ifunc
;
8103 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
8105 case AARCH64_R (IRELATIVE
):
8106 return reloc_class_ifunc
;
8107 case AARCH64_R (RELATIVE
):
8108 return reloc_class_relative
;
8109 case AARCH64_R (JUMP_SLOT
):
8110 return reloc_class_plt
;
8111 case AARCH64_R (COPY
):
8112 return reloc_class_copy
;
8114 return reloc_class_normal
;
8118 /* Handle an AArch64 specific section when reading an object file. This is
8119 called when bfd_section_from_shdr finds a section with an unknown
8123 elfNN_aarch64_section_from_shdr (bfd
*abfd
,
8124 Elf_Internal_Shdr
*hdr
,
8125 const char *name
, int shindex
)
8127 /* There ought to be a place to keep ELF backend specific flags, but
8128 at the moment there isn't one. We just keep track of the
8129 sections by their name, instead. Fortunately, the ABI gives
8130 names for all the AArch64 specific sections, so we will probably get
8132 switch (hdr
->sh_type
)
8134 case SHT_AARCH64_ATTRIBUTES
:
8141 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
8147 /* A structure used to record a list of sections, independently
8148 of the next and prev fields in the asection structure. */
8149 typedef struct section_list
8152 struct section_list
*next
;
8153 struct section_list
*prev
;
8157 /* Unfortunately we need to keep a list of sections for which
8158 an _aarch64_elf_section_data structure has been allocated. This
8159 is because it is possible for functions like elfNN_aarch64_write_section
8160 to be called on a section which has had an elf_data_structure
8161 allocated for it (and so the used_by_bfd field is valid) but
8162 for which the AArch64 extended version of this structure - the
8163 _aarch64_elf_section_data structure - has not been allocated. */
8164 static section_list
*sections_with_aarch64_elf_section_data
= NULL
;
8167 record_section_with_aarch64_elf_section_data (asection
*sec
)
8169 struct section_list
*entry
;
8171 entry
= bfd_malloc (sizeof (*entry
));
8175 entry
->next
= sections_with_aarch64_elf_section_data
;
8177 if (entry
->next
!= NULL
)
8178 entry
->next
->prev
= entry
;
8179 sections_with_aarch64_elf_section_data
= entry
;
8182 static struct section_list
*
8183 find_aarch64_elf_section_entry (asection
*sec
)
8185 struct section_list
*entry
;
8186 static struct section_list
*last_entry
= NULL
;
8188 /* This is a short cut for the typical case where the sections are added
8189 to the sections_with_aarch64_elf_section_data list in forward order and
8190 then looked up here in backwards order. This makes a real difference
8191 to the ld-srec/sec64k.exp linker test. */
8192 entry
= sections_with_aarch64_elf_section_data
;
8193 if (last_entry
!= NULL
)
8195 if (last_entry
->sec
== sec
)
8197 else if (last_entry
->next
!= NULL
&& last_entry
->next
->sec
== sec
)
8198 entry
= last_entry
->next
;
8201 for (; entry
; entry
= entry
->next
)
8202 if (entry
->sec
== sec
)
8206 /* Record the entry prior to this one - it is the entry we are
8207 most likely to want to locate next time. Also this way if we
8208 have been called from
8209 unrecord_section_with_aarch64_elf_section_data () we will not
8210 be caching a pointer that is about to be freed. */
8211 last_entry
= entry
->prev
;
8217 unrecord_section_with_aarch64_elf_section_data (asection
*sec
)
8219 struct section_list
*entry
;
8221 entry
= find_aarch64_elf_section_entry (sec
);
8225 if (entry
->prev
!= NULL
)
8226 entry
->prev
->next
= entry
->next
;
8227 if (entry
->next
!= NULL
)
8228 entry
->next
->prev
= entry
->prev
;
8229 if (entry
== sections_with_aarch64_elf_section_data
)
8230 sections_with_aarch64_elf_section_data
= entry
->next
;
8239 struct bfd_link_info
*info
;
8242 int (*func
) (void *, const char *, Elf_Internal_Sym
*,
8243 asection
*, struct elf_link_hash_entry
*);
8244 } output_arch_syminfo
;
8246 enum map_symbol_type
8253 /* Output a single mapping symbol. */
8256 elfNN_aarch64_output_map_sym (output_arch_syminfo
*osi
,
8257 enum map_symbol_type type
, bfd_vma offset
)
8259 static const char *names
[2] = { "$x", "$d" };
8260 Elf_Internal_Sym sym
;
8262 sym
.st_value
= (osi
->sec
->output_section
->vma
8263 + osi
->sec
->output_offset
+ offset
);
8266 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
8267 sym
.st_shndx
= osi
->sec_shndx
;
8268 return osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
) == 1;
8271 /* Output a single local symbol for a generated stub. */
8274 elfNN_aarch64_output_stub_sym (output_arch_syminfo
*osi
, const char *name
,
8275 bfd_vma offset
, bfd_vma size
)
8277 Elf_Internal_Sym sym
;
8279 sym
.st_value
= (osi
->sec
->output_section
->vma
8280 + osi
->sec
->output_offset
+ offset
);
8283 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
8284 sym
.st_shndx
= osi
->sec_shndx
;
8285 return osi
->func (osi
->finfo
, name
, &sym
, osi
->sec
, NULL
) == 1;
8289 aarch64_map_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8291 struct elf_aarch64_stub_hash_entry
*stub_entry
;
8295 output_arch_syminfo
*osi
;
8297 /* Massage our args to the form they really have. */
8298 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
8299 osi
= (output_arch_syminfo
*) in_arg
;
8301 stub_sec
= stub_entry
->stub_sec
;
8303 /* Ensure this stub is attached to the current section being
8305 if (stub_sec
!= osi
->sec
)
8308 addr
= (bfd_vma
) stub_entry
->stub_offset
;
8310 stub_name
= stub_entry
->output_name
;
8312 switch (stub_entry
->stub_type
)
8314 case aarch64_stub_adrp_branch
:
8315 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8316 sizeof (aarch64_adrp_branch_stub
)))
8318 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8321 case aarch64_stub_long_branch
:
8322 if (!elfNN_aarch64_output_stub_sym
8323 (osi
, stub_name
, addr
, sizeof (aarch64_long_branch_stub
)))
8325 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8327 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_DATA
, addr
+ 16))
8330 case aarch64_stub_erratum_835769_veneer
:
8331 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8332 sizeof (aarch64_erratum_835769_stub
)))
8334 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8337 case aarch64_stub_erratum_843419_veneer
:
8338 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8339 sizeof (aarch64_erratum_843419_stub
)))
8341 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8344 case aarch64_stub_none
:
8354 /* Output mapping symbols for linker generated sections. */
8357 elfNN_aarch64_output_arch_local_syms (bfd
*output_bfd
,
8358 struct bfd_link_info
*info
,
8360 int (*func
) (void *, const char *,
8363 struct elf_link_hash_entry
8366 output_arch_syminfo osi
;
8367 struct elf_aarch64_link_hash_table
*htab
;
8369 htab
= elf_aarch64_hash_table (info
);
8375 /* Long calls stubs. */
8376 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
)
8380 for (stub_sec
= htab
->stub_bfd
->sections
;
8381 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
8383 /* Ignore non-stub sections. */
8384 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
8389 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
8390 (output_bfd
, osi
.sec
->output_section
);
8392 /* The first instruction in a stub is always a branch. */
8393 if (!elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0))
8396 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_map_one_stub
,
8401 /* Finally, output mapping symbols for the PLT. */
8402 if (!htab
->root
.splt
|| htab
->root
.splt
->size
== 0)
8405 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
8406 (output_bfd
, htab
->root
.splt
->output_section
);
8407 osi
.sec
= htab
->root
.splt
;
8409 elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0);
8415 /* Allocate target specific section data. */
8418 elfNN_aarch64_new_section_hook (bfd
*abfd
, asection
*sec
)
8420 if (!sec
->used_by_bfd
)
8422 _aarch64_elf_section_data
*sdata
;
8423 size_t amt
= sizeof (*sdata
);
8425 sdata
= bfd_zalloc (abfd
, amt
);
8428 sec
->used_by_bfd
= sdata
;
8431 record_section_with_aarch64_elf_section_data (sec
);
8433 return _bfd_elf_new_section_hook (abfd
, sec
);
8438 unrecord_section_via_map_over_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
8440 void *ignore ATTRIBUTE_UNUSED
)
8442 unrecord_section_with_aarch64_elf_section_data (sec
);
8446 elfNN_aarch64_close_and_cleanup (bfd
*abfd
)
8449 bfd_map_over_sections (abfd
,
8450 unrecord_section_via_map_over_sections
, NULL
);
8452 return _bfd_elf_close_and_cleanup (abfd
);
8456 elfNN_aarch64_bfd_free_cached_info (bfd
*abfd
)
8459 bfd_map_over_sections (abfd
,
8460 unrecord_section_via_map_over_sections
, NULL
);
8462 return _bfd_free_cached_info (abfd
);
8465 /* Create dynamic sections. This is different from the ARM backend in that
8466 the got, plt, gotplt and their relocation sections are all created in the
8467 standard part of the bfd elf backend. */
8470 elfNN_aarch64_create_dynamic_sections (bfd
*dynobj
,
8471 struct bfd_link_info
*info
)
8473 /* We need to create .got section. */
8474 if (!aarch64_elf_create_got_section (dynobj
, info
))
8477 return _bfd_elf_create_dynamic_sections (dynobj
, info
);
8481 /* Allocate space in .plt, .got and associated reloc sections for
8485 elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8487 struct bfd_link_info
*info
;
8488 struct elf_aarch64_link_hash_table
*htab
;
8489 struct elf_aarch64_link_hash_entry
*eh
;
8490 struct elf_dyn_relocs
*p
;
8492 /* An example of a bfd_link_hash_indirect symbol is versioned
8493 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8494 -> __gxx_personality_v0(bfd_link_hash_defined)
8496 There is no need to process bfd_link_hash_indirect symbols here
8497 because we will also be presented with the concrete instance of
8498 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8499 called to copy all relevant data from the generic to the concrete
8501 if (h
->root
.type
== bfd_link_hash_indirect
)
8504 if (h
->root
.type
== bfd_link_hash_warning
)
8505 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8507 info
= (struct bfd_link_info
*) inf
;
8508 htab
= elf_aarch64_hash_table (info
);
8510 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8511 here if it is defined and referenced in a non-shared object. */
8512 if (h
->type
== STT_GNU_IFUNC
8515 else if (htab
->root
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
8517 /* Make sure this symbol is output as a dynamic symbol.
8518 Undefined weak syms won't yet be marked as dynamic. */
8519 if (h
->dynindx
== -1 && !h
->forced_local
8520 && h
->root
.type
== bfd_link_hash_undefweak
)
8522 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
8526 if (bfd_link_pic (info
) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
8528 asection
*s
= htab
->root
.splt
;
8530 /* If this is the first .plt entry, make room for the special
8533 s
->size
+= htab
->plt_header_size
;
8535 h
->plt
.offset
= s
->size
;
8537 /* If this symbol is not defined in a regular file, and we are
8538 not generating a shared library, then set the symbol to this
8539 location in the .plt. This is required to make function
8540 pointers compare as equal between the normal executable and
8541 the shared library. */
8542 if (!bfd_link_pic (info
) && !h
->def_regular
)
8544 h
->root
.u
.def
.section
= s
;
8545 h
->root
.u
.def
.value
= h
->plt
.offset
;
8548 /* Make room for this entry. For now we only create the
8549 small model PLT entries. We later need to find a way
8550 of relaxing into these from the large model PLT entries. */
8551 s
->size
+= htab
->plt_entry_size
;
8553 /* We also need to make an entry in the .got.plt section, which
8554 will be placed in the .got section by the linker script. */
8555 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
;
8557 /* We also need to make an entry in the .rela.plt section. */
8558 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8560 /* We need to ensure that all GOT entries that serve the PLT
8561 are consecutive with the special GOT slots [0] [1] and
8562 [2]. Any addtional relocations, such as
8563 R_AARCH64_TLSDESC, must be placed after the PLT related
8564 entries. We abuse the reloc_count such that during
8565 sizing we adjust reloc_count to indicate the number of
8566 PLT related reserved entries. In subsequent phases when
8567 filling in the contents of the reloc entries, PLT related
8568 entries are placed by computing their PLT index (0
8569 .. reloc_count). While other none PLT relocs are placed
8570 at the slot indicated by reloc_count and reloc_count is
8573 htab
->root
.srelplt
->reloc_count
++;
8575 /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against
8576 variant PCS symbols are present. */
8577 if (h
->other
& STO_AARCH64_VARIANT_PCS
)
8578 htab
->variant_pcs
= 1;
8583 h
->plt
.offset
= (bfd_vma
) - 1;
8589 h
->plt
.offset
= (bfd_vma
) - 1;
8593 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8594 eh
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8596 if (h
->got
.refcount
> 0)
8599 unsigned got_type
= elf_aarch64_hash_entry (h
)->got_type
;
8601 h
->got
.offset
= (bfd_vma
) - 1;
8603 dyn
= htab
->root
.dynamic_sections_created
;
8605 /* Make sure this symbol is output as a dynamic symbol.
8606 Undefined weak syms won't yet be marked as dynamic. */
8607 if (dyn
&& h
->dynindx
== -1 && !h
->forced_local
8608 && h
->root
.type
== bfd_link_hash_undefweak
)
8610 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
8614 if (got_type
== GOT_UNKNOWN
)
8617 else if (got_type
== GOT_NORMAL
)
8619 h
->got
.offset
= htab
->root
.sgot
->size
;
8620 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8621 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8622 || h
->root
.type
!= bfd_link_hash_undefweak
)
8623 && (bfd_link_pic (info
)
8624 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8625 /* Undefined weak symbol in static PIE resolves to 0 without
8626 any dynamic relocations. */
8627 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8629 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8635 if (got_type
& GOT_TLSDESC_GD
)
8637 eh
->tlsdesc_got_jump_table_offset
=
8638 (htab
->root
.sgotplt
->size
8639 - aarch64_compute_jump_table_size (htab
));
8640 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8641 h
->got
.offset
= (bfd_vma
) - 2;
8644 if (got_type
& GOT_TLS_GD
)
8646 h
->got
.offset
= htab
->root
.sgot
->size
;
8647 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8650 if (got_type
& GOT_TLS_IE
)
8652 h
->got
.offset
= htab
->root
.sgot
->size
;
8653 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8656 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
8657 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8658 || h
->root
.type
!= bfd_link_hash_undefweak
)
8659 && (!bfd_link_executable (info
)
8661 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8663 if (got_type
& GOT_TLSDESC_GD
)
8665 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8666 /* Note reloc_count not incremented here! We have
8667 already adjusted reloc_count for this relocation
8670 /* TLSDESC PLT is now needed, but not yet determined. */
8671 htab
->root
.tlsdesc_plt
= (bfd_vma
) - 1;
8674 if (got_type
& GOT_TLS_GD
)
8675 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
8677 if (got_type
& GOT_TLS_IE
)
8678 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8684 h
->got
.offset
= (bfd_vma
) - 1;
8687 if (h
->dyn_relocs
== NULL
)
8690 /* In the shared -Bsymbolic case, discard space allocated for
8691 dynamic pc-relative relocs against symbols which turn out to be
8692 defined in regular objects. For the normal shared case, discard
8693 space for pc-relative relocs that have become local due to symbol
8694 visibility changes. */
8696 if (bfd_link_pic (info
))
8698 /* Relocs that use pc_count are those that appear on a call
8699 insn, or certain REL relocs that can generated via assembly.
8700 We want calls to protected symbols to resolve directly to the
8701 function rather than going via the plt. If people want
8702 function pointer comparisons to work as expected then they
8703 should avoid writing weird assembly. */
8704 if (SYMBOL_CALLS_LOCAL (info
, h
))
8706 struct elf_dyn_relocs
**pp
;
8708 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
;)
8710 p
->count
-= p
->pc_count
;
8719 /* Also discard relocs on undefined weak syms with non-default
8721 if (h
->dyn_relocs
!= NULL
&& h
->root
.type
== bfd_link_hash_undefweak
)
8723 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
8724 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8725 h
->dyn_relocs
= NULL
;
8727 /* Make sure undefined weak symbols are output as a dynamic
8729 else if (h
->dynindx
== -1
8731 && h
->root
.type
== bfd_link_hash_undefweak
8732 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8737 else if (ELIMINATE_COPY_RELOCS
)
8739 /* For the non-shared case, discard space for relocs against
8740 symbols which turn out to need copy relocs or are not
8746 || (htab
->root
.dynamic_sections_created
8747 && (h
->root
.type
== bfd_link_hash_undefweak
8748 || h
->root
.type
== bfd_link_hash_undefined
))))
8750 /* Make sure this symbol is output as a dynamic symbol.
8751 Undefined weak syms won't yet be marked as dynamic. */
8752 if (h
->dynindx
== -1
8754 && h
->root
.type
== bfd_link_hash_undefweak
8755 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8758 /* If that succeeded, we know we'll be keeping all the
8760 if (h
->dynindx
!= -1)
8764 h
->dyn_relocs
= NULL
;
8769 /* Finally, allocate space. */
8770 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8774 sreloc
= elf_section_data (p
->sec
)->sreloc
;
8776 BFD_ASSERT (sreloc
!= NULL
);
8778 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
8784 /* Allocate space in .plt, .got and associated reloc sections for
8785 ifunc dynamic relocs. */
8788 elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry
*h
,
8791 struct bfd_link_info
*info
;
8792 struct elf_aarch64_link_hash_table
*htab
;
8794 /* An example of a bfd_link_hash_indirect symbol is versioned
8795 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8796 -> __gxx_personality_v0(bfd_link_hash_defined)
8798 There is no need to process bfd_link_hash_indirect symbols here
8799 because we will also be presented with the concrete instance of
8800 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8801 called to copy all relevant data from the generic to the concrete
8803 if (h
->root
.type
== bfd_link_hash_indirect
)
8806 if (h
->root
.type
== bfd_link_hash_warning
)
8807 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8809 info
= (struct bfd_link_info
*) inf
;
8810 htab
= elf_aarch64_hash_table (info
);
8812 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8813 here if it is defined and referenced in a non-shared object. */
8814 if (h
->type
== STT_GNU_IFUNC
8816 return _bfd_elf_allocate_ifunc_dyn_relocs (info
, h
,
8818 htab
->plt_entry_size
,
8819 htab
->plt_header_size
,
8825 /* Allocate space in .plt, .got and associated reloc sections for
8826 local ifunc dynamic relocs. */
8829 elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot
, void *inf
)
8831 struct elf_link_hash_entry
*h
8832 = (struct elf_link_hash_entry
*) *slot
;
8834 if (h
->type
!= STT_GNU_IFUNC
8838 || h
->root
.type
!= bfd_link_hash_defined
)
8841 return elfNN_aarch64_allocate_ifunc_dynrelocs (h
, inf
);
8844 /* This is the most important function of all . Innocuosly named
8848 elfNN_aarch64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8849 struct bfd_link_info
*info
)
8851 struct elf_aarch64_link_hash_table
*htab
;
8857 htab
= elf_aarch64_hash_table ((info
));
8858 dynobj
= htab
->root
.dynobj
;
8860 BFD_ASSERT (dynobj
!= NULL
);
8862 if (htab
->root
.dynamic_sections_created
)
8864 if (bfd_link_executable (info
) && !info
->nointerp
)
8866 s
= bfd_get_linker_section (dynobj
, ".interp");
8869 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8870 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8874 /* Set up .got offsets for local syms, and space for local dynamic
8876 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8878 struct elf_aarch64_local_symbol
*locals
= NULL
;
8879 Elf_Internal_Shdr
*symtab_hdr
;
8883 if (!is_aarch64_elf (ibfd
))
8886 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8888 struct elf_dyn_relocs
*p
;
8890 for (p
= (struct elf_dyn_relocs
*)
8891 (elf_section_data (s
)->local_dynrel
); p
!= NULL
; p
= p
->next
)
8893 if (!bfd_is_abs_section (p
->sec
)
8894 && bfd_is_abs_section (p
->sec
->output_section
))
8896 /* Input section has been discarded, either because
8897 it is a copy of a linkonce section or due to
8898 linker script /DISCARD/, so we'll be discarding
8901 else if (p
->count
!= 0)
8903 srel
= elf_section_data (p
->sec
)->sreloc
;
8904 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
8905 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8906 info
->flags
|= DF_TEXTREL
;
8911 locals
= elf_aarch64_locals (ibfd
);
8915 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8916 srel
= htab
->root
.srelgot
;
8917 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
8919 locals
[i
].got_offset
= (bfd_vma
) - 1;
8920 locals
[i
].tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8921 if (locals
[i
].got_refcount
> 0)
8923 unsigned got_type
= locals
[i
].got_type
;
8924 if (got_type
& GOT_TLSDESC_GD
)
8926 locals
[i
].tlsdesc_got_jump_table_offset
=
8927 (htab
->root
.sgotplt
->size
8928 - aarch64_compute_jump_table_size (htab
));
8929 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8930 locals
[i
].got_offset
= (bfd_vma
) - 2;
8933 if (got_type
& GOT_TLS_GD
)
8935 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
8936 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8939 if (got_type
& GOT_TLS_IE
8940 || got_type
& GOT_NORMAL
)
8942 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
8943 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8946 if (got_type
== GOT_UNKNOWN
)
8950 if (bfd_link_pic (info
))
8952 if (got_type
& GOT_TLSDESC_GD
)
8954 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8955 /* Note RELOC_COUNT not incremented here! */
8956 htab
->root
.tlsdesc_plt
= (bfd_vma
) - 1;
8959 if (got_type
& GOT_TLS_GD
)
8960 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
8962 if (got_type
& GOT_TLS_IE
8963 || got_type
& GOT_NORMAL
)
8964 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8969 locals
[i
].got_refcount
= (bfd_vma
) - 1;
8975 /* Allocate global sym .plt and .got entries, and space for global
8976 sym dynamic relocs. */
8977 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_dynrelocs
,
8980 /* Allocate global ifunc sym .plt and .got entries, and space for global
8981 ifunc sym dynamic relocs. */
8982 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_ifunc_dynrelocs
,
8985 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8986 htab_traverse (htab
->loc_hash_table
,
8987 elfNN_aarch64_allocate_local_ifunc_dynrelocs
,
8990 /* For every jump slot reserved in the sgotplt, reloc_count is
8991 incremented. However, when we reserve space for TLS descriptors,
8992 it's not incremented, so in order to compute the space reserved
8993 for them, it suffices to multiply the reloc count by the jump
8996 if (htab
->root
.srelplt
)
8997 htab
->sgotplt_jump_table_size
= aarch64_compute_jump_table_size (htab
);
8999 if (htab
->root
.tlsdesc_plt
)
9001 if (htab
->root
.splt
->size
== 0)
9002 htab
->root
.splt
->size
+= htab
->plt_header_size
;
9004 /* If we're not using lazy TLS relocations, don't generate the
9005 GOT and PLT entry required. */
9006 if ((info
->flags
& DF_BIND_NOW
))
9007 htab
->root
.tlsdesc_plt
= 0;
9010 htab
->root
.tlsdesc_plt
= htab
->root
.splt
->size
;
9011 htab
->root
.splt
->size
+= htab
->tlsdesc_plt_entry_size
;
9013 htab
->root
.tlsdesc_got
= htab
->root
.sgot
->size
;
9014 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
9018 /* Init mapping symbols information to use later to distingush between
9019 code and data while scanning for errata. */
9020 if (htab
->fix_erratum_835769
|| htab
->fix_erratum_843419
)
9021 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9023 if (!is_aarch64_elf (ibfd
))
9025 bfd_elfNN_aarch64_init_maps (ibfd
);
9028 /* We now have determined the sizes of the various dynamic sections.
9029 Allocate memory for them. */
9031 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9033 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9036 if (s
== htab
->root
.splt
9037 || s
== htab
->root
.sgot
9038 || s
== htab
->root
.sgotplt
9039 || s
== htab
->root
.iplt
9040 || s
== htab
->root
.igotplt
9041 || s
== htab
->root
.sdynbss
9042 || s
== htab
->root
.sdynrelro
)
9044 /* Strip this section if we don't need it; see the
9047 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
9049 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
9052 /* We use the reloc_count field as a counter if we need
9053 to copy relocs into the output file. */
9054 if (s
!= htab
->root
.srelplt
)
9059 /* It's not one of our sections, so don't allocate space. */
9065 /* If we don't need this section, strip it from the
9066 output file. This is mostly to handle .rela.bss and
9067 .rela.plt. We must create both sections in
9068 create_dynamic_sections, because they must be created
9069 before the linker maps input sections to output
9070 sections. The linker does that before
9071 adjust_dynamic_symbol is called, and it is that
9072 function which decides whether anything needs to go
9073 into these sections. */
9074 s
->flags
|= SEC_EXCLUDE
;
9078 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9081 /* Allocate memory for the section contents. We use bfd_zalloc
9082 here in case unused entries are not reclaimed before the
9083 section's contents are written out. This should not happen,
9084 but this way if it does, we get a R_AARCH64_NONE reloc instead
9086 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
9087 if (s
->contents
== NULL
)
9091 if (htab
->root
.dynamic_sections_created
)
9093 /* Add some entries to the .dynamic section. We fill in the
9094 values later, in elfNN_aarch64_finish_dynamic_sections, but we
9095 must add the entries now so that we get the correct size for
9096 the .dynamic section. The DT_DEBUG entry is filled in by the
9097 dynamic linker and used by the debugger. */
9098 #define add_dynamic_entry(TAG, VAL) \
9099 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9101 if (!_bfd_elf_add_dynamic_tags (output_bfd
, info
, relocs
))
9104 if (htab
->root
.splt
->size
!= 0)
9106 if (htab
->variant_pcs
9107 && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS
, 0))
9110 if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_BTI_PAC
)
9111 && (!add_dynamic_entry (DT_AARCH64_BTI_PLT
, 0)
9112 || !add_dynamic_entry (DT_AARCH64_PAC_PLT
, 0)))
9115 else if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_BTI
)
9116 && !add_dynamic_entry (DT_AARCH64_BTI_PLT
, 0))
9119 else if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_PAC
)
9120 && !add_dynamic_entry (DT_AARCH64_PAC_PLT
, 0))
9124 #undef add_dynamic_entry
9130 elf_aarch64_update_plt_entry (bfd
*output_bfd
,
9131 bfd_reloc_code_real_type r_type
,
9132 bfd_byte
*plt_entry
, bfd_vma value
)
9134 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (r_type
);
9136 /* FIXME: We should check the return value from this function call. */
9137 (void) _bfd_aarch64_elf_put_addend (output_bfd
, plt_entry
, r_type
, howto
, value
);
9141 elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry
*h
,
9142 struct elf_aarch64_link_hash_table
9143 *htab
, bfd
*output_bfd
,
9144 struct bfd_link_info
*info
)
9146 bfd_byte
*plt_entry
;
9149 bfd_vma gotplt_entry_address
;
9150 bfd_vma plt_entry_address
;
9151 Elf_Internal_Rela rela
;
9153 asection
*plt
, *gotplt
, *relplt
;
9155 /* When building a static executable, use .iplt, .igot.plt and
9156 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9157 if (htab
->root
.splt
!= NULL
)
9159 plt
= htab
->root
.splt
;
9160 gotplt
= htab
->root
.sgotplt
;
9161 relplt
= htab
->root
.srelplt
;
9165 plt
= htab
->root
.iplt
;
9166 gotplt
= htab
->root
.igotplt
;
9167 relplt
= htab
->root
.irelplt
;
9170 /* Get the index in the procedure linkage table which
9171 corresponds to this symbol. This is the index of this symbol
9172 in all the symbols for which we are making plt entries. The
9173 first entry in the procedure linkage table is reserved.
9175 Get the offset into the .got table of the entry that
9176 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
9177 bytes. The first three are reserved for the dynamic linker.
9179 For static executables, we don't reserve anything. */
9181 if (plt
== htab
->root
.splt
)
9183 plt_index
= (h
->plt
.offset
- htab
->plt_header_size
) / htab
->plt_entry_size
;
9184 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
9188 plt_index
= h
->plt
.offset
/ htab
->plt_entry_size
;
9189 got_offset
= plt_index
* GOT_ENTRY_SIZE
;
9192 plt_entry
= plt
->contents
+ h
->plt
.offset
;
9193 plt_entry_address
= plt
->output_section
->vma
9194 + plt
->output_offset
+ h
->plt
.offset
;
9195 gotplt_entry_address
= gotplt
->output_section
->vma
+
9196 gotplt
->output_offset
+ got_offset
;
9198 /* Copy in the boiler-plate for the PLTn entry. */
9199 memcpy (plt_entry
, htab
->plt_entry
, htab
->plt_entry_size
);
9201 /* First instruction in BTI enabled PLT stub is a BTI
9202 instruction so skip it. */
9203 if (elf_aarch64_tdata (output_bfd
)->plt_type
& PLT_BTI
9204 && elf_elfheader (output_bfd
)->e_type
== ET_EXEC
)
9205 plt_entry
= plt_entry
+ 4;
9207 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9208 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9209 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9211 PG (gotplt_entry_address
) -
9212 PG (plt_entry_address
));
9214 /* Fill in the lo12 bits for the load from the pltgot. */
9215 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
9217 PG_OFFSET (gotplt_entry_address
));
9219 /* Fill in the lo12 bits for the add from the pltgot entry. */
9220 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
9222 PG_OFFSET (gotplt_entry_address
));
9224 /* All the GOTPLT Entries are essentially initialized to PLT0. */
9225 bfd_put_NN (output_bfd
,
9226 plt
->output_section
->vma
+ plt
->output_offset
,
9227 gotplt
->contents
+ got_offset
);
9229 rela
.r_offset
= gotplt_entry_address
;
9231 if (h
->dynindx
== -1
9232 || ((bfd_link_executable (info
)
9233 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9235 && h
->type
== STT_GNU_IFUNC
))
9237 /* If an STT_GNU_IFUNC symbol is locally defined, generate
9238 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
9239 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
9240 rela
.r_addend
= (h
->root
.u
.def
.value
9241 + h
->root
.u
.def
.section
->output_section
->vma
9242 + h
->root
.u
.def
.section
->output_offset
);
9246 /* Fill in the entry in the .rela.plt section. */
9247 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (JUMP_SLOT
));
9251 /* Compute the relocation entry to used based on PLT index and do
9252 not adjust reloc_count. The reloc_count has already been adjusted
9253 to account for this entry. */
9254 loc
= relplt
->contents
+ plt_index
* RELOC_SIZE (htab
);
9255 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9258 /* Size sections even though they're not dynamic. We use it to setup
9259 _TLS_MODULE_BASE_, if needed. */
9262 elfNN_aarch64_always_size_sections (bfd
*output_bfd
,
9263 struct bfd_link_info
*info
)
9267 if (bfd_link_relocatable (info
))
9270 tls_sec
= elf_hash_table (info
)->tls_sec
;
9274 struct elf_link_hash_entry
*tlsbase
;
9276 tlsbase
= elf_link_hash_lookup (elf_hash_table (info
),
9277 "_TLS_MODULE_BASE_", TRUE
, TRUE
, FALSE
);
9281 struct bfd_link_hash_entry
*h
= NULL
;
9282 const struct elf_backend_data
*bed
=
9283 get_elf_backend_data (output_bfd
);
9285 if (!(_bfd_generic_link_add_one_symbol
9286 (info
, output_bfd
, "_TLS_MODULE_BASE_", BSF_LOCAL
,
9287 tls_sec
, 0, NULL
, FALSE
, bed
->collect
, &h
)))
9290 tlsbase
->type
= STT_TLS
;
9291 tlsbase
= (struct elf_link_hash_entry
*) h
;
9292 tlsbase
->def_regular
= 1;
9293 tlsbase
->other
= STV_HIDDEN
;
9294 (*bed
->elf_backend_hide_symbol
) (info
, tlsbase
, TRUE
);
9301 /* Finish up dynamic symbol handling. We set the contents of various
9302 dynamic sections here. */
9305 elfNN_aarch64_finish_dynamic_symbol (bfd
*output_bfd
,
9306 struct bfd_link_info
*info
,
9307 struct elf_link_hash_entry
*h
,
9308 Elf_Internal_Sym
*sym
)
9310 struct elf_aarch64_link_hash_table
*htab
;
9311 htab
= elf_aarch64_hash_table (info
);
9313 if (h
->plt
.offset
!= (bfd_vma
) - 1)
9315 asection
*plt
, *gotplt
, *relplt
;
9317 /* This symbol has an entry in the procedure linkage table. Set
9320 /* When building a static executable, use .iplt, .igot.plt and
9321 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9322 if (htab
->root
.splt
!= NULL
)
9324 plt
= htab
->root
.splt
;
9325 gotplt
= htab
->root
.sgotplt
;
9326 relplt
= htab
->root
.srelplt
;
9330 plt
= htab
->root
.iplt
;
9331 gotplt
= htab
->root
.igotplt
;
9332 relplt
= htab
->root
.irelplt
;
9335 /* This symbol has an entry in the procedure linkage table. Set
9337 if ((h
->dynindx
== -1
9338 && !((h
->forced_local
|| bfd_link_executable (info
))
9340 && h
->type
== STT_GNU_IFUNC
))
9346 elfNN_aarch64_create_small_pltn_entry (h
, htab
, output_bfd
, info
);
9347 if (!h
->def_regular
)
9349 /* Mark the symbol as undefined, rather than as defined in
9350 the .plt section. */
9351 sym
->st_shndx
= SHN_UNDEF
;
9352 /* If the symbol is weak we need to clear the value.
9353 Otherwise, the PLT entry would provide a definition for
9354 the symbol even if the symbol wasn't defined anywhere,
9355 and so the symbol would never be NULL. Leave the value if
9356 there were any relocations where pointer equality matters
9357 (this is a clue for the dynamic linker, to make function
9358 pointer comparisons work between an application and shared
9360 if (!h
->ref_regular_nonweak
|| !h
->pointer_equality_needed
)
9365 if (h
->got
.offset
!= (bfd_vma
) - 1
9366 && elf_aarch64_hash_entry (h
)->got_type
== GOT_NORMAL
9367 /* Undefined weak symbol in static PIE resolves to 0 without
9368 any dynamic relocations. */
9369 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9371 Elf_Internal_Rela rela
;
9374 /* This symbol has an entry in the global offset table. Set it
9376 if (htab
->root
.sgot
== NULL
|| htab
->root
.srelgot
== NULL
)
9379 rela
.r_offset
= (htab
->root
.sgot
->output_section
->vma
9380 + htab
->root
.sgot
->output_offset
9381 + (h
->got
.offset
& ~(bfd_vma
) 1));
9384 && h
->type
== STT_GNU_IFUNC
)
9386 if (bfd_link_pic (info
))
9388 /* Generate R_AARCH64_GLOB_DAT. */
9395 if (!h
->pointer_equality_needed
)
9398 /* For non-shared object, we can't use .got.plt, which
9399 contains the real function address if we need pointer
9400 equality. We load the GOT entry with the PLT entry. */
9401 plt
= htab
->root
.splt
? htab
->root
.splt
: htab
->root
.iplt
;
9402 bfd_put_NN (output_bfd
, (plt
->output_section
->vma
9403 + plt
->output_offset
9405 htab
->root
.sgot
->contents
9406 + (h
->got
.offset
& ~(bfd_vma
) 1));
9410 else if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
9412 if (!(h
->def_regular
|| ELF_COMMON_DEF_P (h
)))
9415 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
9416 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
9417 rela
.r_addend
= (h
->root
.u
.def
.value
9418 + h
->root
.u
.def
.section
->output_section
->vma
9419 + h
->root
.u
.def
.section
->output_offset
);
9424 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
9425 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
9426 htab
->root
.sgot
->contents
+ h
->got
.offset
);
9427 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (GLOB_DAT
));
9431 loc
= htab
->root
.srelgot
->contents
;
9432 loc
+= htab
->root
.srelgot
->reloc_count
++ * RELOC_SIZE (htab
);
9433 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9438 Elf_Internal_Rela rela
;
9442 /* This symbol needs a copy reloc. Set it up. */
9443 if (h
->dynindx
== -1
9444 || (h
->root
.type
!= bfd_link_hash_defined
9445 && h
->root
.type
!= bfd_link_hash_defweak
)
9446 || htab
->root
.srelbss
== NULL
)
9449 rela
.r_offset
= (h
->root
.u
.def
.value
9450 + h
->root
.u
.def
.section
->output_section
->vma
9451 + h
->root
.u
.def
.section
->output_offset
);
9452 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (COPY
));
9454 if (h
->root
.u
.def
.section
== htab
->root
.sdynrelro
)
9455 s
= htab
->root
.sreldynrelro
;
9457 s
= htab
->root
.srelbss
;
9458 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
9459 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9462 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9463 be NULL for local symbols. */
9465 && (h
== elf_hash_table (info
)->hdynamic
9466 || h
== elf_hash_table (info
)->hgot
))
9467 sym
->st_shndx
= SHN_ABS
;
9472 /* Finish up local dynamic symbol handling. We set the contents of
9473 various dynamic sections here. */
9476 elfNN_aarch64_finish_local_dynamic_symbol (void **slot
, void *inf
)
9478 struct elf_link_hash_entry
*h
9479 = (struct elf_link_hash_entry
*) *slot
;
9480 struct bfd_link_info
*info
9481 = (struct bfd_link_info
*) inf
;
9483 return elfNN_aarch64_finish_dynamic_symbol (info
->output_bfd
,
9488 elfNN_aarch64_init_small_plt0_entry (bfd
*output_bfd ATTRIBUTE_UNUSED
,
9489 struct elf_aarch64_link_hash_table
9492 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9493 small and large plts and at the minute just generates
9496 /* PLT0 of the small PLT looks like this in ELF64 -
9497 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9498 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9499 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9501 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9502 // GOTPLT entry for this.
9504 PLT0 will be slightly different in ELF32 due to different got entry
9506 bfd_vma plt_got_2nd_ent
; /* Address of GOT[2]. */
9510 memcpy (htab
->root
.splt
->contents
, htab
->plt0_entry
,
9511 htab
->plt_header_size
);
9513 /* PR 26312: Explicitly set the sh_entsize to 0 so that
9514 consumers do not think that the section contains fixed
9516 elf_section_data (htab
->root
.splt
->output_section
)->this_hdr
.sh_entsize
= 0;
9518 plt_got_2nd_ent
= (htab
->root
.sgotplt
->output_section
->vma
9519 + htab
->root
.sgotplt
->output_offset
9520 + GOT_ENTRY_SIZE
* 2);
9522 plt_base
= htab
->root
.splt
->output_section
->vma
+
9523 htab
->root
.splt
->output_offset
;
9525 /* First instruction in BTI enabled PLT stub is a BTI
9526 instruction so skip it. */
9527 bfd_byte
*plt0_entry
= htab
->root
.splt
->contents
;
9528 if (elf_aarch64_tdata (output_bfd
)->plt_type
& PLT_BTI
)
9529 plt0_entry
= plt0_entry
+ 4;
9531 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9532 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9533 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9535 PG (plt_got_2nd_ent
) - PG (plt_base
+ 4));
9537 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
9539 PG_OFFSET (plt_got_2nd_ent
));
9541 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
9543 PG_OFFSET (plt_got_2nd_ent
));
9547 elfNN_aarch64_finish_dynamic_sections (bfd
*output_bfd
,
9548 struct bfd_link_info
*info
)
9550 struct elf_aarch64_link_hash_table
*htab
;
9554 htab
= elf_aarch64_hash_table (info
);
9555 dynobj
= htab
->root
.dynobj
;
9556 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
9558 if (htab
->root
.dynamic_sections_created
)
9560 ElfNN_External_Dyn
*dyncon
, *dynconend
;
9562 if (sdyn
== NULL
|| htab
->root
.sgot
== NULL
)
9565 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
9566 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9567 for (; dyncon
< dynconend
; dyncon
++)
9569 Elf_Internal_Dyn dyn
;
9572 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9580 s
= htab
->root
.sgotplt
;
9581 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9585 s
= htab
->root
.srelplt
;
9586 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9590 s
= htab
->root
.srelplt
;
9591 dyn
.d_un
.d_val
= s
->size
;
9594 case DT_TLSDESC_PLT
:
9595 s
= htab
->root
.splt
;
9596 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9597 + htab
->root
.tlsdesc_plt
;
9600 case DT_TLSDESC_GOT
:
9601 s
= htab
->root
.sgot
;
9602 BFD_ASSERT (htab
->root
.tlsdesc_got
!= (bfd_vma
)-1);
9603 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9604 + htab
->root
.tlsdesc_got
;
9608 bfd_elfNN_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9613 /* Fill in the special first entry in the procedure linkage table. */
9614 if (htab
->root
.splt
&& htab
->root
.splt
->size
> 0)
9616 elfNN_aarch64_init_small_plt0_entry (output_bfd
, htab
);
9618 if (htab
->root
.tlsdesc_plt
&& !(info
->flags
& DF_BIND_NOW
))
9620 BFD_ASSERT (htab
->root
.tlsdesc_got
!= (bfd_vma
)-1);
9621 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
9622 htab
->root
.sgot
->contents
+ htab
->root
.tlsdesc_got
);
9624 const bfd_byte
*entry
= elfNN_aarch64_tlsdesc_small_plt_entry
;
9625 htab
->tlsdesc_plt_entry_size
= PLT_TLSDESC_ENTRY_SIZE
;
9627 aarch64_plt_type type
= elf_aarch64_tdata (output_bfd
)->plt_type
;
9628 if (type
== PLT_BTI
|| type
== PLT_BTI_PAC
)
9630 entry
= elfNN_aarch64_tlsdesc_small_plt_bti_entry
;
9633 memcpy (htab
->root
.splt
->contents
+ htab
->root
.tlsdesc_plt
,
9634 entry
, htab
->tlsdesc_plt_entry_size
);
9637 bfd_vma adrp1_addr
=
9638 htab
->root
.splt
->output_section
->vma
9639 + htab
->root
.splt
->output_offset
9640 + htab
->root
.tlsdesc_plt
+ 4;
9642 bfd_vma adrp2_addr
= adrp1_addr
+ 4;
9645 htab
->root
.sgot
->output_section
->vma
9646 + htab
->root
.sgot
->output_offset
;
9648 bfd_vma pltgot_addr
=
9649 htab
->root
.sgotplt
->output_section
->vma
9650 + htab
->root
.sgotplt
->output_offset
;
9652 bfd_vma dt_tlsdesc_got
= got_addr
+ htab
->root
.tlsdesc_got
;
9654 bfd_byte
*plt_entry
=
9655 htab
->root
.splt
->contents
+ htab
->root
.tlsdesc_plt
;
9657 /* First instruction in BTI enabled PLT stub is a BTI
9658 instruction so skip it. */
9661 plt_entry
= plt_entry
+ 4;
9662 adrp1_addr
= adrp1_addr
+ 4;
9663 adrp2_addr
= adrp2_addr
+ 4;
9666 /* adrp x2, DT_TLSDESC_GOT */
9667 elf_aarch64_update_plt_entry (output_bfd
,
9668 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9670 (PG (dt_tlsdesc_got
)
9671 - PG (adrp1_addr
)));
9674 elf_aarch64_update_plt_entry (output_bfd
,
9675 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9678 - PG (adrp2_addr
)));
9680 /* ldr x2, [x2, #0] */
9681 elf_aarch64_update_plt_entry (output_bfd
,
9682 BFD_RELOC_AARCH64_LDSTNN_LO12
,
9684 PG_OFFSET (dt_tlsdesc_got
));
9687 elf_aarch64_update_plt_entry (output_bfd
,
9688 BFD_RELOC_AARCH64_ADD_LO12
,
9690 PG_OFFSET (pltgot_addr
));
9695 if (htab
->root
.sgotplt
)
9697 if (bfd_is_abs_section (htab
->root
.sgotplt
->output_section
))
9700 (_("discarded output section: `%pA'"), htab
->root
.sgotplt
);
9704 /* Fill in the first three entries in the global offset table. */
9705 if (htab
->root
.sgotplt
->size
> 0)
9707 bfd_put_NN (output_bfd
, (bfd_vma
) 0, htab
->root
.sgotplt
->contents
);
9709 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
9710 bfd_put_NN (output_bfd
,
9712 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
);
9713 bfd_put_NN (output_bfd
,
9715 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
* 2);
9718 if (htab
->root
.sgot
)
9720 if (htab
->root
.sgot
->size
> 0)
9723 sdyn
? sdyn
->output_section
->vma
+ sdyn
->output_offset
: 0;
9724 bfd_put_NN (output_bfd
, addr
, htab
->root
.sgot
->contents
);
9728 elf_section_data (htab
->root
.sgotplt
->output_section
)->
9729 this_hdr
.sh_entsize
= GOT_ENTRY_SIZE
;
9732 if (htab
->root
.sgot
&& htab
->root
.sgot
->size
> 0)
9733 elf_section_data (htab
->root
.sgot
->output_section
)->this_hdr
.sh_entsize
9736 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9737 htab_traverse (htab
->loc_hash_table
,
9738 elfNN_aarch64_finish_local_dynamic_symbol
,
9744 /* Check if BTI enabled PLTs are needed. Returns the type needed. */
9745 static aarch64_plt_type
9746 get_plt_type (bfd
*abfd
)
9748 aarch64_plt_type ret
= PLT_NORMAL
;
9749 bfd_byte
*contents
, *extdyn
, *extdynend
;
9750 asection
*sec
= bfd_get_section_by_name (abfd
, ".dynamic");
9751 if (!sec
|| !bfd_malloc_and_get_section (abfd
, sec
, &contents
))
9754 extdynend
= contents
+ sec
->size
;
9755 for (; extdyn
< extdynend
; extdyn
+= sizeof (ElfNN_External_Dyn
))
9757 Elf_Internal_Dyn dyn
;
9758 bfd_elfNN_swap_dyn_in (abfd
, extdyn
, &dyn
);
9760 /* Let's check the processor specific dynamic array tags. */
9761 bfd_vma tag
= dyn
.d_tag
;
9762 if (tag
< DT_LOPROC
|| tag
> DT_HIPROC
)
9767 case DT_AARCH64_BTI_PLT
:
9771 case DT_AARCH64_PAC_PLT
:
9783 elfNN_aarch64_get_synthetic_symtab (bfd
*abfd
,
9790 elf_aarch64_tdata (abfd
)->plt_type
= get_plt_type (abfd
);
9791 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
9792 dynsymcount
, dynsyms
, ret
);
9795 /* Return address for Ith PLT stub in section PLT, for relocation REL
9796 or (bfd_vma) -1 if it should not be included. */
9799 elfNN_aarch64_plt_sym_val (bfd_vma i
, const asection
*plt
,
9800 const arelent
*rel ATTRIBUTE_UNUSED
)
9802 size_t plt0_size
= PLT_ENTRY_SIZE
;
9803 size_t pltn_size
= PLT_SMALL_ENTRY_SIZE
;
9805 if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_BTI_PAC
)
9807 if (elf_elfheader (plt
->owner
)->e_type
== ET_EXEC
)
9808 pltn_size
= PLT_BTI_PAC_SMALL_ENTRY_SIZE
;
9810 pltn_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
9812 else if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_BTI
)
9814 if (elf_elfheader (plt
->owner
)->e_type
== ET_EXEC
)
9815 pltn_size
= PLT_BTI_SMALL_ENTRY_SIZE
;
9817 else if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_PAC
)
9819 pltn_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
9822 return plt
->vma
+ plt0_size
+ i
* pltn_size
;
9825 /* Returns TRUE if NAME is an AArch64 mapping symbol.
9826 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9827 It also allows a period initiated suffix to be added to the symbol, ie:
9828 "$[adtx]\.[:sym_char]+". */
9831 is_aarch64_mapping_symbol (const char * name
)
9833 return name
!= NULL
/* Paranoia. */
9834 && name
[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9835 the mapping symbols could have acquired a prefix.
9836 We do not support this here, since such symbols no
9837 longer conform to the ARM ELF ABI. */
9838 && (name
[1] == 'd' || name
[1] == 'x')
9839 && (name
[2] == 0 || name
[2] == '.');
9840 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9841 any characters that follow the period are legal characters for the body
9842 of a symbol's name. For now we just assume that this is the case. */
9845 /* Make sure that mapping symbols in object files are not removed via the
9846 "strip --strip-unneeded" tool. These symbols might needed in order to
9847 correctly generate linked files. Once an object file has been linked,
9848 it should be safe to remove them. */
9851 elfNN_aarch64_backend_symbol_processing (bfd
*abfd
, asymbol
*sym
)
9853 if (((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0)
9854 && sym
->section
!= bfd_abs_section_ptr
9855 && is_aarch64_mapping_symbol (sym
->name
))
9856 sym
->flags
|= BSF_KEEP
;
9859 /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a
9860 wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account
9861 for the effect of GNU properties of the output_bfd. */
9863 elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info
*info
)
9865 uint32_t prop
= elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
;
9866 bfd
*pbfd
= _bfd_aarch64_elf_link_setup_gnu_properties (info
, &prop
);
9867 elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
= prop
;
9868 elf_aarch64_tdata (info
->output_bfd
)->plt_type
9869 |= (prop
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
) ? PLT_BTI
: 0;
9870 setup_plt_values (info
, elf_aarch64_tdata (info
->output_bfd
)->plt_type
);
9874 /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a
9875 wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account
9876 for the effect of GNU properties of the output_bfd. */
9878 elfNN_aarch64_merge_gnu_properties (struct bfd_link_info
*info
,
9879 bfd
*abfd
, bfd
*bbfd
,
9880 elf_property
*aprop
,
9881 elf_property
*bprop
)
9884 = elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
;
9886 /* If output has been marked with BTI using command line argument, give out
9887 warning if necessary. */
9888 /* Properties are merged per type, hence only check for warnings when merging
9889 GNU_PROPERTY_AARCH64_FEATURE_1_AND. */
9890 if (((aprop
&& aprop
->pr_type
== GNU_PROPERTY_AARCH64_FEATURE_1_AND
)
9891 || (bprop
&& bprop
->pr_type
== GNU_PROPERTY_AARCH64_FEATURE_1_AND
))
9892 && (prop
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
)
9893 && (!elf_aarch64_tdata (info
->output_bfd
)->no_bti_warn
))
9895 if ((aprop
&& !(aprop
->u
.number
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
))
9898 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
9899 "all inputs do not have BTI in NOTE section."),
9902 if ((bprop
&& !(bprop
->u
.number
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
))
9905 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
9906 "all inputs do not have BTI in NOTE section."),
9911 return _bfd_aarch64_elf_merge_gnu_properties (info
, abfd
, aprop
,
9915 /* We use this so we can override certain functions
9916 (though currently we don't). */
9918 const struct elf_size_info elfNN_aarch64_size_info
=
9920 sizeof (ElfNN_External_Ehdr
),
9921 sizeof (ElfNN_External_Phdr
),
9922 sizeof (ElfNN_External_Shdr
),
9923 sizeof (ElfNN_External_Rel
),
9924 sizeof (ElfNN_External_Rela
),
9925 sizeof (ElfNN_External_Sym
),
9926 sizeof (ElfNN_External_Dyn
),
9927 sizeof (Elf_External_Note
),
9928 4, /* Hash table entry size. */
9929 1, /* Internal relocs per external relocs. */
9930 ARCH_SIZE
, /* Arch size. */
9931 LOG_FILE_ALIGN
, /* Log_file_align. */
9932 ELFCLASSNN
, EV_CURRENT
,
9933 bfd_elfNN_write_out_phdrs
,
9934 bfd_elfNN_write_shdrs_and_ehdr
,
9935 bfd_elfNN_checksum_contents
,
9936 bfd_elfNN_write_relocs
,
9937 bfd_elfNN_swap_symbol_in
,
9938 bfd_elfNN_swap_symbol_out
,
9939 bfd_elfNN_slurp_reloc_table
,
9940 bfd_elfNN_slurp_symbol_table
,
9941 bfd_elfNN_swap_dyn_in
,
9942 bfd_elfNN_swap_dyn_out
,
9943 bfd_elfNN_swap_reloc_in
,
9944 bfd_elfNN_swap_reloc_out
,
9945 bfd_elfNN_swap_reloca_in
,
9946 bfd_elfNN_swap_reloca_out
9949 #define ELF_ARCH bfd_arch_aarch64
9950 #define ELF_MACHINE_CODE EM_AARCH64
9951 #define ELF_MAXPAGESIZE 0x10000
9952 #define ELF_MINPAGESIZE 0x1000
9953 #define ELF_COMMONPAGESIZE 0x1000
9955 #define bfd_elfNN_close_and_cleanup \
9956 elfNN_aarch64_close_and_cleanup
9958 #define bfd_elfNN_bfd_free_cached_info \
9959 elfNN_aarch64_bfd_free_cached_info
9961 #define bfd_elfNN_bfd_is_target_special_symbol \
9962 elfNN_aarch64_is_target_special_symbol
9964 #define bfd_elfNN_bfd_link_hash_table_create \
9965 elfNN_aarch64_link_hash_table_create
9967 #define bfd_elfNN_bfd_merge_private_bfd_data \
9968 elfNN_aarch64_merge_private_bfd_data
9970 #define bfd_elfNN_bfd_print_private_bfd_data \
9971 elfNN_aarch64_print_private_bfd_data
9973 #define bfd_elfNN_bfd_reloc_type_lookup \
9974 elfNN_aarch64_reloc_type_lookup
9976 #define bfd_elfNN_bfd_reloc_name_lookup \
9977 elfNN_aarch64_reloc_name_lookup
9979 #define bfd_elfNN_bfd_set_private_flags \
9980 elfNN_aarch64_set_private_flags
9982 #define bfd_elfNN_find_inliner_info \
9983 elfNN_aarch64_find_inliner_info
9985 #define bfd_elfNN_get_synthetic_symtab \
9986 elfNN_aarch64_get_synthetic_symtab
9988 #define bfd_elfNN_mkobject \
9989 elfNN_aarch64_mkobject
9991 #define bfd_elfNN_new_section_hook \
9992 elfNN_aarch64_new_section_hook
9994 #define elf_backend_adjust_dynamic_symbol \
9995 elfNN_aarch64_adjust_dynamic_symbol
9997 #define elf_backend_always_size_sections \
9998 elfNN_aarch64_always_size_sections
10000 #define elf_backend_check_relocs \
10001 elfNN_aarch64_check_relocs
10003 #define elf_backend_copy_indirect_symbol \
10004 elfNN_aarch64_copy_indirect_symbol
10006 #define elf_backend_merge_symbol_attribute \
10007 elfNN_aarch64_merge_symbol_attribute
10009 /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
10010 to them in our hash. */
10011 #define elf_backend_create_dynamic_sections \
10012 elfNN_aarch64_create_dynamic_sections
10014 #define elf_backend_init_index_section \
10015 _bfd_elf_init_2_index_sections
10017 #define elf_backend_finish_dynamic_sections \
10018 elfNN_aarch64_finish_dynamic_sections
10020 #define elf_backend_finish_dynamic_symbol \
10021 elfNN_aarch64_finish_dynamic_symbol
10023 #define elf_backend_object_p \
10024 elfNN_aarch64_object_p
10026 #define elf_backend_output_arch_local_syms \
10027 elfNN_aarch64_output_arch_local_syms
10029 #define elf_backend_maybe_function_sym \
10030 elfNN_aarch64_maybe_function_sym
10032 #define elf_backend_plt_sym_val \
10033 elfNN_aarch64_plt_sym_val
10035 #define elf_backend_init_file_header \
10036 elfNN_aarch64_init_file_header
10038 #define elf_backend_relocate_section \
10039 elfNN_aarch64_relocate_section
10041 #define elf_backend_reloc_type_class \
10042 elfNN_aarch64_reloc_type_class
10044 #define elf_backend_section_from_shdr \
10045 elfNN_aarch64_section_from_shdr
10047 #define elf_backend_size_dynamic_sections \
10048 elfNN_aarch64_size_dynamic_sections
10050 #define elf_backend_size_info \
10051 elfNN_aarch64_size_info
10053 #define elf_backend_write_section \
10054 elfNN_aarch64_write_section
10056 #define elf_backend_symbol_processing \
10057 elfNN_aarch64_backend_symbol_processing
10059 #define elf_backend_setup_gnu_properties \
10060 elfNN_aarch64_link_setup_gnu_properties
10062 #define elf_backend_merge_gnu_properties \
10063 elfNN_aarch64_merge_gnu_properties
10065 #define elf_backend_can_refcount 1
10066 #define elf_backend_can_gc_sections 1
10067 #define elf_backend_plt_readonly 1
10068 #define elf_backend_want_got_plt 1
10069 #define elf_backend_want_plt_sym 0
10070 #define elf_backend_want_dynrelro 1
10071 #define elf_backend_may_use_rel_p 0
10072 #define elf_backend_may_use_rela_p 1
10073 #define elf_backend_default_use_rela_p 1
10074 #define elf_backend_rela_normal 1
10075 #define elf_backend_dtrel_excludes_plt 1
10076 #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
10077 #define elf_backend_default_execstack 0
10078 #define elf_backend_extern_protected_data 1
10079 #define elf_backend_hash_symbol elf_aarch64_hash_symbol
10081 #undef elf_backend_obj_attrs_section
10082 #define elf_backend_obj_attrs_section ".ARM.attributes"
10084 #include "elfNN-target.h"
10086 /* CloudABI support. */
10088 #undef TARGET_LITTLE_SYM
10089 #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
10090 #undef TARGET_LITTLE_NAME
10091 #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
10092 #undef TARGET_BIG_SYM
10093 #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
10094 #undef TARGET_BIG_NAME
10095 #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
10098 #define ELF_OSABI ELFOSABI_CLOUDABI
10101 #define elfNN_bed elfNN_aarch64_cloudabi_bed
10103 #include "elfNN-target.h"