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
160 #define MORELLO_R(NAME) R_MORELLO_ ## NAME
161 #define MORELLO_R_STR(NAME) "R_MORELLO_" #NAME
164 #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME
165 #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME
166 #define HOWTO64(...) EMPTY_HOWTO (0)
167 #define HOWTO32(...) HOWTO (__VA_ARGS__)
168 #define LOG_FILE_ALIGN 2
169 #define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
170 #define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC
173 #define IS_AARCH64_TLS_RELOC(R_TYPE) \
174 ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
175 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
176 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
177 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
178 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
179 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
180 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
181 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
182 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
183 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
184 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
185 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
186 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
187 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
188 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
189 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
190 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
191 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \
192 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \
193 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \
194 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \
195 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \
196 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \
197 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \
198 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \
199 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \
200 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \
201 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \
202 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \
203 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \
204 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
205 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
206 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
207 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12 \
208 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC \
209 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12 \
210 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC \
211 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12 \
212 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC \
213 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12 \
214 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC \
215 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \
216 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \
217 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \
218 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \
219 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \
220 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \
221 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \
222 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \
223 || IS_AARCH64_TLSDESC_RELOC ((R_TYPE)))
225 #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
226 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
227 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
228 || (R_TYPE) == BFD_RELOC_MORELLO_TLSDESC_ADR_PAGE20 \
229 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
230 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
231 || (R_TYPE) == BFD_RELOC_MORELLO_TLSDESC_CALL \
232 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
233 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
234 || (R_TYPE) == BFD_RELOC_MORELLO_TLSDESC_LD128_LO12 \
235 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \
236 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
237 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
238 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
239 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
240 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
241 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
242 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
243 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
244 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
245 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
246 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
247 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \
248 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
249 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
250 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21)
252 #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
253 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \
254 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
255 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
256 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
257 || (R_TYPE) == BFD_RELOC_MORELLO_TLSDESC_ADR_PAGE20 \
258 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
259 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
260 || (R_TYPE) == BFD_RELOC_MORELLO_TLSDESC_CALL \
261 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
262 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \
263 || (R_TYPE) == BFD_RELOC_MORELLO_TLSDESC_LD128_LO12 \
264 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
265 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
266 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
267 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1)
269 #define ELIMINATE_COPY_RELOCS 1
271 /* Return size of a relocation entry. HTAB is the bfd's
272 elf_aarch64_link_hash_entry. */
273 #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela))
275 /* GOT Entry size - 16 bytes in C64, 8 bytes in ELF64 and 4 bytes in ELF32. */
276 #define GOT_ENTRY_SIZE(htab) (ARCH_SIZE >> (3 - htab->c64_rel))
277 #define GOT_RESERVED_HEADER_SLOTS (3)
278 #define PLT_ENTRY_SIZE (32)
279 #define PLT_SMALL_ENTRY_SIZE (16)
280 #define PLT_TLSDESC_ENTRY_SIZE (32)
281 /* PLT sizes with BTI insn. */
282 #define PLT_BTI_SMALL_ENTRY_SIZE (24)
283 /* PLT sizes with PAC insn. */
284 #define PLT_PAC_SMALL_ENTRY_SIZE (24)
285 /* PLT sizes with BTI and PAC insn. */
286 #define PLT_BTI_PAC_SMALL_ENTRY_SIZE (24)
288 /* Encoding of the nop instruction. */
289 #define INSN_NOP 0xd503201f
291 #define aarch64_compute_jump_table_size(htab) \
292 (((htab)->root.srelplt == NULL) ? 0 \
293 : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE (htab))
295 /* The first entry in a procedure linkage table looks like this
296 if the distance between the PLTGOT and the PLT is < 4GB use
297 these PLT entries. Note that the dynamic linker gets &PLTGOT[2]
298 in x16 and needs to work out PLTGOT[1] by using an address of
299 [x16,#-GOT_ENTRY_SIZE]. */
300 static const bfd_byte elfNN_aarch64_small_plt0_entry
[PLT_ENTRY_SIZE
] =
302 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
303 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
305 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
306 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
308 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
309 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
311 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
312 0x1f, 0x20, 0x03, 0xd5, /* nop */
313 0x1f, 0x20, 0x03, 0xd5, /* nop */
314 0x1f, 0x20, 0x03, 0xd5, /* nop */
317 static const bfd_byte elfNN_aarch64_small_plt0_bti_entry
[PLT_ENTRY_SIZE
] =
319 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
320 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
321 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
323 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
324 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
326 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
327 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
329 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
330 0x1f, 0x20, 0x03, 0xd5, /* nop */
331 0x1f, 0x20, 0x03, 0xd5, /* nop */
335 static const bfd_byte elfNN_c64_small_plt0_entry
[PLT_ENTRY_SIZE
] =
337 0xf0, 0x7b, 0xbf, 0x62, /* stp c16, c30, [csp, #-32]! */
338 0x10, 0x00, 0x80, 0x90, /* adrp c16, (GOT+16) */
339 0x11, 0x0a, 0x40, 0xc2, /* ldr c17, [c16, #PLT_GOT+0x10] */
340 0x10, 0x02, 0x00, 0x02, /* add c16, c16,#PLT_GOT+0x10 */
341 0x20, 0x12, 0xc2, 0xc2, /* br c17 */
342 0x1f, 0x20, 0x03, 0xd5, /* nop */
343 0x1f, 0x20, 0x03, 0xd5, /* nop */
344 0x1f, 0x20, 0x03, 0xd5, /* nop */
347 /* Per function entry in a procedure linkage table looks like this
348 if the distance between the PLTGOT and the PLT is < 4GB use
349 these PLT entries. Use BTI versions of the PLTs when enabled. */
350 static const bfd_byte elfNN_aarch64_small_plt_entry
[PLT_SMALL_ENTRY_SIZE
] =
352 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
354 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
355 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
357 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
358 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
360 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
364 static const bfd_byte elfNN_c64_small_plt_entry
[PLT_SMALL_ENTRY_SIZE
] =
366 0x10, 0x00, 0x80, 0x90, /* adrp c16, PLTGOT + offset */
367 0x11, 0x02, 0x40, 0xc2, /* ldr c17, [c16, PLTGOT + offset] */
368 0x10, 0x02, 0x00, 0x02, /* add c16, c16, :lo12:PLTGOT + offset */
369 0x20, 0x12, 0xc2, 0xc2, /* br c17. */
372 static const bfd_byte
373 elfNN_aarch64_small_plt_bti_entry
[PLT_BTI_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 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
385 0x1f, 0x20, 0x03, 0xd5, /* nop */
388 static const bfd_byte
389 elfNN_aarch64_small_plt_pac_entry
[PLT_PAC_SMALL_ENTRY_SIZE
] =
391 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
393 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
394 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
396 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
397 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
399 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */
400 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
401 0x1f, 0x20, 0x03, 0xd5, /* nop */
404 static const bfd_byte
405 elfNN_aarch64_small_plt_bti_pac_entry
[PLT_BTI_PAC_SMALL_ENTRY_SIZE
] =
407 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
408 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
410 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
411 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
413 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
414 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
416 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */
417 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
420 static const bfd_byte
421 elfNN_aarch64_tlsdesc_small_plt_entry
[PLT_TLSDESC_ENTRY_SIZE
] =
423 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
424 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
425 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
427 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
428 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
430 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
431 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
433 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
434 0x1f, 0x20, 0x03, 0xd5, /* nop */
435 0x1f, 0x20, 0x03, 0xd5, /* nop */
438 static const bfd_byte
439 elfNN_aarch64_tlsdesc_small_plt_bti_entry
[PLT_TLSDESC_ENTRY_SIZE
] =
441 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
442 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
443 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
444 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
446 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
447 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
449 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
450 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
452 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
453 0x1f, 0x20, 0x03, 0xd5, /* nop */
456 static const bfd_byte
457 elfNN_aarch64_tlsdesc_small_plt_c64_entry
[PLT_TLSDESC_ENTRY_SIZE
] =
459 0xe2, 0x8f, 0xbf, 0x62, /* stp c2, c3, [sp, #-16]! */
460 0x02, 0x00, 0x80, 0x90, /* adrp c2, 0 */
461 0x03, 0x00, 0x80, 0x90, /* adrp c3, 0 */
462 0x42, 0x00, 0x40, 0xc2, /* ldr c2, [c2, #0] */
463 0x63, 0x00, 0x00, 0x02, /* add c3, c3, 0 */
464 0x40, 0x10, 0xc2, 0xc2, /* br c2 */
465 0x1f, 0x20, 0x03, 0xd5, /* nop */
466 0x1f, 0x20, 0x03, 0xd5, /* nop */
469 #define elf_info_to_howto elfNN_aarch64_info_to_howto
470 #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto
472 #define AARCH64_ELF_ABI_VERSION 0
474 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
475 #define ALL_ONES (~ (bfd_vma) 0)
477 /* Indexed by the bfd interal reloc enumerators.
478 Therefore, the table needs to be synced with BFD_RELOC_AARCH64_*
481 static reloc_howto_type elfNN_aarch64_howto_table
[] =
485 /* Basic data relocations. */
487 /* Deprecated, but retained for backwards compatibility. */
488 HOWTO64 (R_AARCH64_NULL
, /* type */
490 3, /* size (0 = byte, 1 = short, 2 = long) */
492 FALSE
, /* pc_relative */
494 complain_overflow_dont
, /* complain_on_overflow */
495 bfd_elf_generic_reloc
, /* special_function */
496 "R_AARCH64_NULL", /* name */
497 FALSE
, /* partial_inplace */
500 FALSE
), /* pcrel_offset */
501 HOWTO (R_AARCH64_NONE
, /* type */
503 3, /* size (0 = byte, 1 = short, 2 = long) */
505 FALSE
, /* pc_relative */
507 complain_overflow_dont
, /* complain_on_overflow */
508 bfd_elf_generic_reloc
, /* special_function */
509 "R_AARCH64_NONE", /* name */
510 FALSE
, /* partial_inplace */
513 FALSE
), /* pcrel_offset */
516 HOWTO64 (AARCH64_R (ABS64
), /* type */
518 4, /* size (4 = long long) */
520 FALSE
, /* pc_relative */
522 complain_overflow_unsigned
, /* complain_on_overflow */
523 bfd_elf_generic_reloc
, /* special_function */
524 AARCH64_R_STR (ABS64
), /* name */
525 FALSE
, /* partial_inplace */
526 ALL_ONES
, /* src_mask */
527 ALL_ONES
, /* dst_mask */
528 FALSE
), /* pcrel_offset */
531 HOWTO (AARCH64_R (ABS32
), /* type */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
535 FALSE
, /* pc_relative */
537 complain_overflow_unsigned
, /* complain_on_overflow */
538 bfd_elf_generic_reloc
, /* special_function */
539 AARCH64_R_STR (ABS32
), /* name */
540 FALSE
, /* partial_inplace */
541 0xffffffff, /* src_mask */
542 0xffffffff, /* dst_mask */
543 FALSE
), /* pcrel_offset */
546 HOWTO (AARCH64_R (ABS16
), /* type */
548 1, /* size (0 = byte, 1 = short, 2 = long) */
550 FALSE
, /* pc_relative */
552 complain_overflow_unsigned
, /* complain_on_overflow */
553 bfd_elf_generic_reloc
, /* special_function */
554 AARCH64_R_STR (ABS16
), /* name */
555 FALSE
, /* partial_inplace */
556 0xffff, /* src_mask */
557 0xffff, /* dst_mask */
558 FALSE
), /* pcrel_offset */
560 /* .xword: (S+A-P) */
561 HOWTO64 (AARCH64_R (PREL64
), /* type */
563 4, /* size (4 = long long) */
565 TRUE
, /* pc_relative */
567 complain_overflow_signed
, /* complain_on_overflow */
568 bfd_elf_generic_reloc
, /* special_function */
569 AARCH64_R_STR (PREL64
), /* name */
570 FALSE
, /* partial_inplace */
571 ALL_ONES
, /* src_mask */
572 ALL_ONES
, /* dst_mask */
573 TRUE
), /* pcrel_offset */
576 HOWTO (AARCH64_R (PREL32
), /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 TRUE
, /* pc_relative */
582 complain_overflow_signed
, /* complain_on_overflow */
583 bfd_elf_generic_reloc
, /* special_function */
584 AARCH64_R_STR (PREL32
), /* name */
585 FALSE
, /* partial_inplace */
586 0xffffffff, /* src_mask */
587 0xffffffff, /* dst_mask */
588 TRUE
), /* pcrel_offset */
591 HOWTO (AARCH64_R (PREL16
), /* type */
593 1, /* size (0 = byte, 1 = short, 2 = long) */
595 TRUE
, /* pc_relative */
597 complain_overflow_signed
, /* complain_on_overflow */
598 bfd_elf_generic_reloc
, /* special_function */
599 AARCH64_R_STR (PREL16
), /* name */
600 FALSE
, /* partial_inplace */
601 0xffff, /* src_mask */
602 0xffff, /* dst_mask */
603 TRUE
), /* pcrel_offset */
605 /* Group relocations to create a 16, 32, 48 or 64 bit
606 unsigned data or abs address inline. */
608 /* MOVZ: ((S+A) >> 0) & 0xffff */
609 HOWTO (AARCH64_R (MOVW_UABS_G0
), /* type */
611 2, /* size (0 = byte, 1 = short, 2 = long) */
613 FALSE
, /* pc_relative */
615 complain_overflow_unsigned
, /* complain_on_overflow */
616 bfd_elf_generic_reloc
, /* special_function */
617 AARCH64_R_STR (MOVW_UABS_G0
), /* name */
618 FALSE
, /* partial_inplace */
619 0xffff, /* src_mask */
620 0xffff, /* dst_mask */
621 FALSE
), /* pcrel_offset */
623 /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
624 HOWTO (AARCH64_R (MOVW_UABS_G0_NC
), /* type */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
628 FALSE
, /* pc_relative */
630 complain_overflow_dont
, /* complain_on_overflow */
631 bfd_elf_generic_reloc
, /* special_function */
632 AARCH64_R_STR (MOVW_UABS_G0_NC
), /* name */
633 FALSE
, /* partial_inplace */
634 0xffff, /* src_mask */
635 0xffff, /* dst_mask */
636 FALSE
), /* pcrel_offset */
638 /* MOVZ: ((S+A) >> 16) & 0xffff */
639 HOWTO (AARCH64_R (MOVW_UABS_G1
), /* type */
641 2, /* size (0 = byte, 1 = short, 2 = long) */
643 FALSE
, /* pc_relative */
645 complain_overflow_unsigned
, /* complain_on_overflow */
646 bfd_elf_generic_reloc
, /* special_function */
647 AARCH64_R_STR (MOVW_UABS_G1
), /* name */
648 FALSE
, /* partial_inplace */
649 0xffff, /* src_mask */
650 0xffff, /* dst_mask */
651 FALSE
), /* pcrel_offset */
653 /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
654 HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC
), /* type */
656 2, /* size (0 = byte, 1 = short, 2 = long) */
658 FALSE
, /* pc_relative */
660 complain_overflow_dont
, /* complain_on_overflow */
661 bfd_elf_generic_reloc
, /* special_function */
662 AARCH64_R_STR (MOVW_UABS_G1_NC
), /* name */
663 FALSE
, /* partial_inplace */
664 0xffff, /* src_mask */
665 0xffff, /* dst_mask */
666 FALSE
), /* pcrel_offset */
668 /* MOVZ: ((S+A) >> 32) & 0xffff */
669 HOWTO64 (AARCH64_R (MOVW_UABS_G2
), /* type */
671 2, /* size (0 = byte, 1 = short, 2 = long) */
673 FALSE
, /* pc_relative */
675 complain_overflow_unsigned
, /* complain_on_overflow */
676 bfd_elf_generic_reloc
, /* special_function */
677 AARCH64_R_STR (MOVW_UABS_G2
), /* name */
678 FALSE
, /* partial_inplace */
679 0xffff, /* src_mask */
680 0xffff, /* dst_mask */
681 FALSE
), /* pcrel_offset */
683 /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
684 HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC
), /* type */
686 2, /* size (0 = byte, 1 = short, 2 = long) */
688 FALSE
, /* pc_relative */
690 complain_overflow_dont
, /* complain_on_overflow */
691 bfd_elf_generic_reloc
, /* special_function */
692 AARCH64_R_STR (MOVW_UABS_G2_NC
), /* name */
693 FALSE
, /* partial_inplace */
694 0xffff, /* src_mask */
695 0xffff, /* dst_mask */
696 FALSE
), /* pcrel_offset */
698 /* MOVZ: ((S+A) >> 48) & 0xffff */
699 HOWTO64 (AARCH64_R (MOVW_UABS_G3
), /* type */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_unsigned
, /* complain_on_overflow */
706 bfd_elf_generic_reloc
, /* special_function */
707 AARCH64_R_STR (MOVW_UABS_G3
), /* name */
708 FALSE
, /* partial_inplace */
709 0xffff, /* src_mask */
710 0xffff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 /* Group relocations to create high part of a 16, 32, 48 or 64 bit
714 signed data or abs address inline. Will change instruction
715 to MOVN or MOVZ depending on sign of calculated value. */
717 /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
718 HOWTO (AARCH64_R (MOVW_SABS_G0
), /* type */
720 2, /* size (0 = byte, 1 = short, 2 = long) */
722 FALSE
, /* pc_relative */
724 complain_overflow_signed
, /* complain_on_overflow */
725 bfd_elf_generic_reloc
, /* special_function */
726 AARCH64_R_STR (MOVW_SABS_G0
), /* name */
727 FALSE
, /* partial_inplace */
728 0xffff, /* src_mask */
729 0xffff, /* dst_mask */
730 FALSE
), /* pcrel_offset */
732 /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
733 HOWTO64 (AARCH64_R (MOVW_SABS_G1
), /* type */
735 2, /* size (0 = byte, 1 = short, 2 = long) */
737 FALSE
, /* pc_relative */
739 complain_overflow_signed
, /* complain_on_overflow */
740 bfd_elf_generic_reloc
, /* special_function */
741 AARCH64_R_STR (MOVW_SABS_G1
), /* name */
742 FALSE
, /* partial_inplace */
743 0xffff, /* src_mask */
744 0xffff, /* dst_mask */
745 FALSE
), /* pcrel_offset */
747 /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
748 HOWTO64 (AARCH64_R (MOVW_SABS_G2
), /* type */
750 2, /* size (0 = byte, 1 = short, 2 = long) */
752 FALSE
, /* pc_relative */
754 complain_overflow_signed
, /* complain_on_overflow */
755 bfd_elf_generic_reloc
, /* special_function */
756 AARCH64_R_STR (MOVW_SABS_G2
), /* name */
757 FALSE
, /* partial_inplace */
758 0xffff, /* src_mask */
759 0xffff, /* dst_mask */
760 FALSE
), /* pcrel_offset */
762 /* Group relocations to create a 16, 32, 48 or 64 bit
763 PC relative address inline. */
765 /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */
766 HOWTO (AARCH64_R (MOVW_PREL_G0
), /* type */
768 2, /* size (0 = byte, 1 = short, 2 = long) */
770 TRUE
, /* pc_relative */
772 complain_overflow_signed
, /* complain_on_overflow */
773 bfd_elf_generic_reloc
, /* special_function */
774 AARCH64_R_STR (MOVW_PREL_G0
), /* name */
775 FALSE
, /* partial_inplace */
776 0xffff, /* src_mask */
777 0xffff, /* dst_mask */
778 TRUE
), /* pcrel_offset */
780 /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */
781 HOWTO (AARCH64_R (MOVW_PREL_G0_NC
), /* type */
783 2, /* size (0 = byte, 1 = short, 2 = long) */
785 TRUE
, /* pc_relative */
787 complain_overflow_dont
, /* complain_on_overflow */
788 bfd_elf_generic_reloc
, /* special_function */
789 AARCH64_R_STR (MOVW_PREL_G0_NC
), /* name */
790 FALSE
, /* partial_inplace */
791 0xffff, /* src_mask */
792 0xffff, /* dst_mask */
793 TRUE
), /* pcrel_offset */
795 /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */
796 HOWTO (AARCH64_R (MOVW_PREL_G1
), /* type */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
800 TRUE
, /* pc_relative */
802 complain_overflow_signed
, /* complain_on_overflow */
803 bfd_elf_generic_reloc
, /* special_function */
804 AARCH64_R_STR (MOVW_PREL_G1
), /* name */
805 FALSE
, /* partial_inplace */
806 0xffff, /* src_mask */
807 0xffff, /* dst_mask */
808 TRUE
), /* pcrel_offset */
810 /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */
811 HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC
), /* 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_G1_NC
), /* name */
820 FALSE
, /* partial_inplace */
821 0xffff, /* src_mask */
822 0xffff, /* dst_mask */
823 TRUE
), /* pcrel_offset */
825 /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */
826 HOWTO64 (AARCH64_R (MOVW_PREL_G2
), /* type */
828 2, /* size (0 = byte, 1 = short, 2 = long) */
830 TRUE
, /* pc_relative */
832 complain_overflow_signed
, /* complain_on_overflow */
833 bfd_elf_generic_reloc
, /* special_function */
834 AARCH64_R_STR (MOVW_PREL_G2
), /* name */
835 FALSE
, /* partial_inplace */
836 0xffff, /* src_mask */
837 0xffff, /* dst_mask */
838 TRUE
), /* pcrel_offset */
840 /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */
841 HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC
), /* type */
843 2, /* size (0 = byte, 1 = short, 2 = long) */
845 TRUE
, /* pc_relative */
847 complain_overflow_dont
, /* complain_on_overflow */
848 bfd_elf_generic_reloc
, /* special_function */
849 AARCH64_R_STR (MOVW_PREL_G2_NC
), /* name */
850 FALSE
, /* partial_inplace */
851 0xffff, /* src_mask */
852 0xffff, /* dst_mask */
853 TRUE
), /* pcrel_offset */
855 /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */
856 HOWTO64 (AARCH64_R (MOVW_PREL_G3
), /* type */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
860 TRUE
, /* pc_relative */
862 complain_overflow_dont
, /* complain_on_overflow */
863 bfd_elf_generic_reloc
, /* special_function */
864 AARCH64_R_STR (MOVW_PREL_G3
), /* name */
865 FALSE
, /* partial_inplace */
866 0xffff, /* src_mask */
867 0xffff, /* dst_mask */
868 TRUE
), /* pcrel_offset */
870 /* Relocations to generate 19, 21 and 33 bit PC-relative load/store
871 addresses: PG(x) is (x & ~0xfff). */
873 /* LD-lit: ((S+A-P) >> 4) & 0x1ffff */
874 HOWTO64 (MORELLO_R (LD_PREL_LO17
), /* type */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
878 TRUE
, /* pc_relative */
880 complain_overflow_signed
, /* complain_on_overflow */
881 bfd_elf_generic_reloc
, /* special_function */
882 MORELLO_R_STR (LD_PREL_LO17
), /* name */
883 FALSE
, /* partial_inplace */
884 0x1ffff, /* src_mask */
885 0x1ffff, /* dst_mask */
886 TRUE
), /* pcrel_offset */
888 /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
889 HOWTO (AARCH64_R (LD_PREL_LO19
), /* type */
891 2, /* size (0 = byte, 1 = short, 2 = long) */
893 TRUE
, /* pc_relative */
895 complain_overflow_signed
, /* complain_on_overflow */
896 bfd_elf_generic_reloc
, /* special_function */
897 AARCH64_R_STR (LD_PREL_LO19
), /* name */
898 FALSE
, /* partial_inplace */
899 0x7ffff, /* src_mask */
900 0x7ffff, /* dst_mask */
901 TRUE
), /* pcrel_offset */
903 /* C64 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0xfffff */
904 HOWTO64 (MORELLO_R (ADR_PREL_PG_HI20
), /* type */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
908 TRUE
, /* pc_relative */
910 complain_overflow_signed
, /* complain_on_overflow */
911 bfd_elf_generic_reloc
, /* special_function */
912 MORELLO_R_STR (ADR_PREL_PG_HI20
), /* name */
913 FALSE
, /* partial_inplace */
914 0xfffff, /* src_mask */
915 0xfffff, /* dst_mask */
916 TRUE
), /* pcrel_offset */
918 /* C64 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0xfffff [no overflow check] */
919 HOWTO64 (MORELLO_R (ADR_PREL_PG_HI20_NC
), /* type */
921 2, /* size (0 = byte, 1 = short, 2 = long) */
923 TRUE
, /* pc_relative */
925 complain_overflow_dont
, /* complain_on_overflow */
926 bfd_elf_generic_reloc
, /* special_function */
927 MORELLO_R_STR (ADR_PREL_PG_HI20_NC
), /* name */
928 FALSE
, /* partial_inplace */
929 0xfffff, /* src_mask */
930 0xfffff, /* dst_mask */
931 TRUE
), /* pcrel_offset */
933 /* ADR: (S+A-P) & 0x1fffff */
934 HOWTO (AARCH64_R (ADR_PREL_LO21
), /* type */
936 2, /* size (0 = byte, 1 = short, 2 = long) */
938 TRUE
, /* pc_relative */
940 complain_overflow_signed
, /* complain_on_overflow */
941 bfd_elf_generic_reloc
, /* special_function */
942 AARCH64_R_STR (ADR_PREL_LO21
), /* name */
943 FALSE
, /* partial_inplace */
944 0x1fffff, /* src_mask */
945 0x1fffff, /* dst_mask */
946 TRUE
), /* pcrel_offset */
948 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
949 HOWTO (AARCH64_R (ADR_PREL_PG_HI21
), /* type */
951 2, /* size (0 = byte, 1 = short, 2 = long) */
953 TRUE
, /* pc_relative */
955 complain_overflow_signed
, /* complain_on_overflow */
956 bfd_elf_generic_reloc
, /* special_function */
957 AARCH64_R_STR (ADR_PREL_PG_HI21
), /* name */
958 FALSE
, /* partial_inplace */
959 0x1fffff, /* src_mask */
960 0x1fffff, /* dst_mask */
961 TRUE
), /* pcrel_offset */
963 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
964 HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC
), /* type */
966 2, /* size (0 = byte, 1 = short, 2 = long) */
968 TRUE
, /* pc_relative */
970 complain_overflow_dont
, /* complain_on_overflow */
971 bfd_elf_generic_reloc
, /* special_function */
972 AARCH64_R_STR (ADR_PREL_PG_HI21_NC
), /* name */
973 FALSE
, /* partial_inplace */
974 0x1fffff, /* src_mask */
975 0x1fffff, /* dst_mask */
976 TRUE
), /* pcrel_offset */
978 /* ADD: (S+A) & 0xfff [no overflow check] */
979 HOWTO (AARCH64_R (ADD_ABS_LO12_NC
), /* type */
981 2, /* size (0 = byte, 1 = short, 2 = long) */
983 FALSE
, /* pc_relative */
985 complain_overflow_dont
, /* complain_on_overflow */
986 bfd_elf_generic_reloc
, /* special_function */
987 AARCH64_R_STR (ADD_ABS_LO12_NC
), /* name */
988 FALSE
, /* partial_inplace */
989 0x3ffc00, /* src_mask */
990 0x3ffc00, /* dst_mask */
991 FALSE
), /* pcrel_offset */
993 /* LD/ST8: (S+A) & 0xfff */
994 HOWTO (AARCH64_R (LDST8_ABS_LO12_NC
), /* type */
996 2, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE
, /* pc_relative */
1000 complain_overflow_dont
, /* complain_on_overflow */
1001 bfd_elf_generic_reloc
, /* special_function */
1002 AARCH64_R_STR (LDST8_ABS_LO12_NC
), /* name */
1003 FALSE
, /* partial_inplace */
1004 0xfff, /* src_mask */
1005 0xfff, /* dst_mask */
1006 FALSE
), /* pcrel_offset */
1008 /* Relocations for control-flow instructions. */
1010 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
1011 HOWTO (AARCH64_R (TSTBR14
), /* type */
1013 2, /* size (0 = byte, 1 = short, 2 = long) */
1015 TRUE
, /* pc_relative */
1017 complain_overflow_signed
, /* complain_on_overflow */
1018 bfd_elf_generic_reloc
, /* special_function */
1019 AARCH64_R_STR (TSTBR14
), /* name */
1020 FALSE
, /* partial_inplace */
1021 0x3fff, /* src_mask */
1022 0x3fff, /* dst_mask */
1023 TRUE
), /* pcrel_offset */
1025 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
1026 HOWTO (AARCH64_R (CONDBR19
), /* type */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1030 TRUE
, /* pc_relative */
1032 complain_overflow_signed
, /* complain_on_overflow */
1033 bfd_elf_generic_reloc
, /* special_function */
1034 AARCH64_R_STR (CONDBR19
), /* name */
1035 FALSE
, /* partial_inplace */
1036 0x7ffff, /* src_mask */
1037 0x7ffff, /* dst_mask */
1038 TRUE
), /* pcrel_offset */
1040 /* B: ((S+A-P) >> 2) & 0x3ffffff */
1041 HOWTO (AARCH64_R (JUMP26
), /* type */
1043 2, /* size (0 = byte, 1 = short, 2 = long) */
1045 TRUE
, /* pc_relative */
1047 complain_overflow_signed
, /* complain_on_overflow */
1048 bfd_elf_generic_reloc
, /* special_function */
1049 AARCH64_R_STR (JUMP26
), /* name */
1050 FALSE
, /* partial_inplace */
1051 0x3ffffff, /* src_mask */
1052 0x3ffffff, /* dst_mask */
1053 TRUE
), /* pcrel_offset */
1055 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
1056 HOWTO (AARCH64_R (CALL26
), /* type */
1058 2, /* size (0 = byte, 1 = short, 2 = long) */
1060 TRUE
, /* pc_relative */
1062 complain_overflow_signed
, /* complain_on_overflow */
1063 bfd_elf_generic_reloc
, /* special_function */
1064 AARCH64_R_STR (CALL26
), /* name */
1065 FALSE
, /* partial_inplace */
1066 0x3ffffff, /* src_mask */
1067 0x3ffffff, /* dst_mask */
1068 TRUE
), /* pcrel_offset */
1070 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
1071 HOWTO64 (MORELLO_R (TSTBR14
), /* type */
1073 2, /* size (0 = byte, 1 = short, 2 = long) */
1075 TRUE
, /* pc_relative */
1077 complain_overflow_signed
, /* complain_on_overflow */
1078 bfd_elf_generic_reloc
, /* special_function */
1079 MORELLO_R_STR (TSTBR14
), /* name */
1080 FALSE
, /* partial_inplace */
1081 0x3fff, /* src_mask */
1082 0x3fff, /* dst_mask */
1083 TRUE
), /* pcrel_offset */
1085 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
1086 HOWTO64 (MORELLO_R (CONDBR19
), /* type */
1088 2, /* size (0 = byte, 1 = short, 2 = long) */
1090 TRUE
, /* pc_relative */
1092 complain_overflow_signed
, /* complain_on_overflow */
1093 bfd_elf_generic_reloc
, /* special_function */
1094 MORELLO_R_STR (CONDBR19
), /* name */
1095 FALSE
, /* partial_inplace */
1096 0x7ffff, /* src_mask */
1097 0x7ffff, /* dst_mask */
1098 TRUE
), /* pcrel_offset */
1100 /* B: ((S+A-P) >> 2) & 0x3ffffff */
1101 HOWTO64 (MORELLO_R (JUMP26
), /* type */
1103 2, /* size (0 = byte, 1 = short, 2 = long) */
1105 TRUE
, /* pc_relative */
1107 complain_overflow_signed
, /* complain_on_overflow */
1108 bfd_elf_generic_reloc
, /* special_function */
1109 MORELLO_R_STR (JUMP26
), /* name */
1110 FALSE
, /* partial_inplace */
1111 0x3ffffff, /* src_mask */
1112 0x3ffffff, /* dst_mask */
1113 TRUE
), /* pcrel_offset */
1115 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
1116 HOWTO64 (MORELLO_R (CALL26
), /* type */
1118 2, /* size (0 = byte, 1 = short, 2 = long) */
1120 TRUE
, /* pc_relative */
1122 complain_overflow_signed
, /* complain_on_overflow */
1123 bfd_elf_generic_reloc
, /* special_function */
1124 MORELLO_R_STR (CALL26
), /* name */
1125 FALSE
, /* partial_inplace */
1126 0x3ffffff, /* src_mask */
1127 0x3ffffff, /* dst_mask */
1128 TRUE
), /* pcrel_offset */
1130 /* LD/ST16: (S+A) & 0xffe */
1131 HOWTO (AARCH64_R (LDST16_ABS_LO12_NC
), /* type */
1133 2, /* size (0 = byte, 1 = short, 2 = long) */
1135 FALSE
, /* pc_relative */
1137 complain_overflow_dont
, /* complain_on_overflow */
1138 bfd_elf_generic_reloc
, /* special_function */
1139 AARCH64_R_STR (LDST16_ABS_LO12_NC
), /* name */
1140 FALSE
, /* partial_inplace */
1141 0xffe, /* src_mask */
1142 0xffe, /* dst_mask */
1143 FALSE
), /* pcrel_offset */
1145 /* LD/ST32: (S+A) & 0xffc */
1146 HOWTO (AARCH64_R (LDST32_ABS_LO12_NC
), /* type */
1148 2, /* size (0 = byte, 1 = short, 2 = long) */
1150 FALSE
, /* pc_relative */
1152 complain_overflow_dont
, /* complain_on_overflow */
1153 bfd_elf_generic_reloc
, /* special_function */
1154 AARCH64_R_STR (LDST32_ABS_LO12_NC
), /* name */
1155 FALSE
, /* partial_inplace */
1156 0xffc, /* src_mask */
1157 0xffc, /* dst_mask */
1158 FALSE
), /* pcrel_offset */
1160 /* LD/ST64: (S+A) & 0xff8 */
1161 HOWTO (AARCH64_R (LDST64_ABS_LO12_NC
), /* type */
1163 2, /* size (0 = byte, 1 = short, 2 = long) */
1165 FALSE
, /* pc_relative */
1167 complain_overflow_dont
, /* complain_on_overflow */
1168 bfd_elf_generic_reloc
, /* special_function */
1169 AARCH64_R_STR (LDST64_ABS_LO12_NC
), /* name */
1170 FALSE
, /* partial_inplace */
1171 0xff8, /* src_mask */
1172 0xff8, /* dst_mask */
1173 FALSE
), /* pcrel_offset */
1175 /* LD/ST128: (S+A) & 0xff0 */
1176 HOWTO (AARCH64_R (LDST128_ABS_LO12_NC
), /* type */
1178 2, /* size (0 = byte, 1 = short, 2 = long) */
1180 FALSE
, /* pc_relative */
1182 complain_overflow_dont
, /* complain_on_overflow */
1183 bfd_elf_generic_reloc
, /* special_function */
1184 AARCH64_R_STR (LDST128_ABS_LO12_NC
), /* name */
1185 FALSE
, /* partial_inplace */
1186 0xff0, /* src_mask */
1187 0xff0, /* dst_mask */
1188 FALSE
), /* pcrel_offset */
1190 /* Set a load-literal immediate field to bits
1191 0x1FFFFC of G(S)-P */
1192 HOWTO (AARCH64_R (GOT_LD_PREL19
), /* type */
1194 2, /* size (0 = byte,1 = short,2 = long) */
1196 TRUE
, /* pc_relative */
1198 complain_overflow_signed
, /* complain_on_overflow */
1199 bfd_elf_generic_reloc
, /* special_function */
1200 AARCH64_R_STR (GOT_LD_PREL19
), /* name */
1201 FALSE
, /* partial_inplace */
1202 0xffffe0, /* src_mask */
1203 0xffffe0, /* dst_mask */
1204 TRUE
), /* pcrel_offset */
1206 /* Get to the page for the GOT entry for the symbol
1207 (G(S) - P) using an ADRP instruction. */
1208 HOWTO (AARCH64_R (ADR_GOT_PAGE
), /* type */
1209 12, /* rightshift */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1212 TRUE
, /* pc_relative */
1214 complain_overflow_dont
, /* complain_on_overflow */
1215 bfd_elf_generic_reloc
, /* special_function */
1216 AARCH64_R_STR (ADR_GOT_PAGE
), /* name */
1217 FALSE
, /* partial_inplace */
1218 0x1fffff, /* src_mask */
1219 0x1fffff, /* dst_mask */
1220 TRUE
), /* pcrel_offset */
1222 /* Get to the page for the GOT entry for the symbol
1223 (G(S) - P) using a C64 ADRP instruction. */
1224 HOWTO64 (MORELLO_R (ADR_GOT_PAGE
), /* type */
1225 12, /* rightshift */
1226 2, /* size (0 = byte, 1 = short, 2 = long) */
1228 TRUE
, /* pc_relative */
1230 complain_overflow_dont
, /* complain_on_overflow */
1231 bfd_elf_generic_reloc
, /* special_function */
1232 MORELLO_R_STR (ADR_GOT_PAGE
), /* name */
1233 FALSE
, /* partial_inplace */
1234 0xfffff, /* src_mask */
1235 0xfffff, /* dst_mask */
1236 TRUE
), /* pcrel_offset */
1238 /* LD64: GOT offset G(S) & 0xff8 */
1239 HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC
), /* type */
1241 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 FALSE
, /* pc_relative */
1245 complain_overflow_dont
, /* complain_on_overflow */
1246 bfd_elf_generic_reloc
, /* special_function */
1247 AARCH64_R_STR (LD64_GOT_LO12_NC
), /* name */
1248 FALSE
, /* partial_inplace */
1249 0xff8, /* src_mask */
1250 0xff8, /* dst_mask */
1251 FALSE
), /* pcrel_offset */
1253 /* LD128: GOT offset G(S) & 0xff0 */
1254 HOWTO64 (MORELLO_R (LD128_GOT_LO12_NC
), /* type */
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 MORELLO_R_STR (LD128_GOT_LO12_NC
), /* name */
1263 FALSE
, /* partial_inplace */
1264 0xff0, /* src_mask */
1265 0xff0, /* dst_mask */
1266 FALSE
), /* pcrel_offset */
1268 /* LD32: GOT offset G(S) & 0xffc */
1269 HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC
), /* type */
1271 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 FALSE
, /* pc_relative */
1275 complain_overflow_dont
, /* complain_on_overflow */
1276 bfd_elf_generic_reloc
, /* special_function */
1277 AARCH64_R_STR (LD32_GOT_LO12_NC
), /* name */
1278 FALSE
, /* partial_inplace */
1279 0xffc, /* src_mask */
1280 0xffc, /* dst_mask */
1281 FALSE
), /* pcrel_offset */
1283 /* Lower 16 bits of GOT offset for the symbol. */
1284 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC
), /* type */
1286 2, /* size (0 = byte, 1 = short, 2 = long) */
1288 FALSE
, /* pc_relative */
1290 complain_overflow_dont
, /* complain_on_overflow */
1291 bfd_elf_generic_reloc
, /* special_function */
1292 AARCH64_R_STR (MOVW_GOTOFF_G0_NC
), /* name */
1293 FALSE
, /* partial_inplace */
1294 0xffff, /* src_mask */
1295 0xffff, /* dst_mask */
1296 FALSE
), /* pcrel_offset */
1298 /* Higher 16 bits of GOT offset for the symbol. */
1299 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1
), /* type */
1300 16, /* rightshift */
1301 2, /* size (0 = byte, 1 = short, 2 = long) */
1303 FALSE
, /* pc_relative */
1305 complain_overflow_unsigned
, /* complain_on_overflow */
1306 bfd_elf_generic_reloc
, /* special_function */
1307 AARCH64_R_STR (MOVW_GOTOFF_G1
), /* name */
1308 FALSE
, /* partial_inplace */
1309 0xffff, /* src_mask */
1310 0xffff, /* dst_mask */
1311 FALSE
), /* pcrel_offset */
1313 /* LD64: GOT offset for the symbol. */
1314 HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15
), /* type */
1316 2, /* size (0 = byte, 1 = short, 2 = long) */
1318 FALSE
, /* pc_relative */
1320 complain_overflow_unsigned
, /* complain_on_overflow */
1321 bfd_elf_generic_reloc
, /* special_function */
1322 AARCH64_R_STR (LD64_GOTOFF_LO15
), /* name */
1323 FALSE
, /* partial_inplace */
1324 0x7ff8, /* src_mask */
1325 0x7ff8, /* dst_mask */
1326 FALSE
), /* pcrel_offset */
1328 /* LD32: GOT offset to the page address of GOT table.
1329 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
1330 HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14
), /* type */
1332 2, /* size (0 = byte, 1 = short, 2 = long) */
1334 FALSE
, /* pc_relative */
1336 complain_overflow_unsigned
, /* complain_on_overflow */
1337 bfd_elf_generic_reloc
, /* special_function */
1338 AARCH64_R_STR (LD32_GOTPAGE_LO14
), /* name */
1339 FALSE
, /* partial_inplace */
1340 0x5ffc, /* src_mask */
1341 0x5ffc, /* dst_mask */
1342 FALSE
), /* pcrel_offset */
1344 /* LD64: GOT offset to the page address of GOT table.
1345 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
1346 HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15
), /* type */
1348 2, /* size (0 = byte, 1 = short, 2 = long) */
1350 FALSE
, /* pc_relative */
1352 complain_overflow_unsigned
, /* complain_on_overflow */
1353 bfd_elf_generic_reloc
, /* special_function */
1354 AARCH64_R_STR (LD64_GOTPAGE_LO15
), /* name */
1355 FALSE
, /* partial_inplace */
1356 0x7ff8, /* src_mask */
1357 0x7ff8, /* dst_mask */
1358 FALSE
), /* pcrel_offset */
1360 /* Get to the page for the GOT entry for the symbol
1361 (G(S) - P) using an ADRP instruction. */
1362 HOWTO (AARCH64_R (TLSGD_ADR_PAGE21
), /* type */
1363 12, /* rightshift */
1364 2, /* size (0 = byte, 1 = short, 2 = long) */
1366 TRUE
, /* pc_relative */
1368 complain_overflow_dont
, /* complain_on_overflow */
1369 bfd_elf_generic_reloc
, /* special_function */
1370 AARCH64_R_STR (TLSGD_ADR_PAGE21
), /* name */
1371 FALSE
, /* partial_inplace */
1372 0x1fffff, /* src_mask */
1373 0x1fffff, /* dst_mask */
1374 TRUE
), /* pcrel_offset */
1376 HOWTO (AARCH64_R (TLSGD_ADR_PREL21
), /* type */
1378 2, /* size (0 = byte, 1 = short, 2 = long) */
1380 TRUE
, /* pc_relative */
1382 complain_overflow_dont
, /* complain_on_overflow */
1383 bfd_elf_generic_reloc
, /* special_function */
1384 AARCH64_R_STR (TLSGD_ADR_PREL21
), /* name */
1385 FALSE
, /* partial_inplace */
1386 0x1fffff, /* src_mask */
1387 0x1fffff, /* dst_mask */
1388 TRUE
), /* pcrel_offset */
1390 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1391 HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC
), /* type */
1393 2, /* size (0 = byte, 1 = short, 2 = long) */
1395 FALSE
, /* pc_relative */
1397 complain_overflow_dont
, /* complain_on_overflow */
1398 bfd_elf_generic_reloc
, /* special_function */
1399 AARCH64_R_STR (TLSGD_ADD_LO12_NC
), /* name */
1400 FALSE
, /* partial_inplace */
1401 0xfff, /* src_mask */
1402 0xfff, /* dst_mask */
1403 FALSE
), /* pcrel_offset */
1405 /* Lower 16 bits of GOT offset to tls_index. */
1406 HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC
), /* type */
1408 2, /* size (0 = byte, 1 = short, 2 = long) */
1410 FALSE
, /* pc_relative */
1412 complain_overflow_dont
, /* complain_on_overflow */
1413 bfd_elf_generic_reloc
, /* special_function */
1414 AARCH64_R_STR (TLSGD_MOVW_G0_NC
), /* name */
1415 FALSE
, /* partial_inplace */
1416 0xffff, /* src_mask */
1417 0xffff, /* dst_mask */
1418 FALSE
), /* pcrel_offset */
1420 /* Higher 16 bits of GOT offset to tls_index. */
1421 HOWTO64 (AARCH64_R (TLSGD_MOVW_G1
), /* type */
1422 16, /* rightshift */
1423 2, /* size (0 = byte, 1 = short, 2 = long) */
1425 FALSE
, /* pc_relative */
1427 complain_overflow_unsigned
, /* complain_on_overflow */
1428 bfd_elf_generic_reloc
, /* special_function */
1429 AARCH64_R_STR (TLSGD_MOVW_G1
), /* name */
1430 FALSE
, /* partial_inplace */
1431 0xffff, /* src_mask */
1432 0xffff, /* dst_mask */
1433 FALSE
), /* pcrel_offset */
1435 HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21
), /* type */
1436 12, /* rightshift */
1437 2, /* size (0 = byte, 1 = short, 2 = long) */
1439 FALSE
, /* pc_relative */
1441 complain_overflow_dont
, /* complain_on_overflow */
1442 bfd_elf_generic_reloc
, /* special_function */
1443 AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21
), /* name */
1444 FALSE
, /* partial_inplace */
1445 0x1fffff, /* src_mask */
1446 0x1fffff, /* dst_mask */
1447 FALSE
), /* pcrel_offset */
1449 HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC
), /* type */
1451 2, /* size (0 = byte, 1 = short, 2 = long) */
1453 FALSE
, /* pc_relative */
1455 complain_overflow_dont
, /* complain_on_overflow */
1456 bfd_elf_generic_reloc
, /* special_function */
1457 AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC
), /* name */
1458 FALSE
, /* partial_inplace */
1459 0xff8, /* src_mask */
1460 0xff8, /* dst_mask */
1461 FALSE
), /* pcrel_offset */
1463 HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC
), /* type */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
1467 FALSE
, /* pc_relative */
1469 complain_overflow_dont
, /* complain_on_overflow */
1470 bfd_elf_generic_reloc
, /* special_function */
1471 AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC
), /* name */
1472 FALSE
, /* partial_inplace */
1473 0xffc, /* src_mask */
1474 0xffc, /* dst_mask */
1475 FALSE
), /* pcrel_offset */
1477 HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19
), /* type */
1479 2, /* size (0 = byte, 1 = short, 2 = long) */
1481 FALSE
, /* pc_relative */
1483 complain_overflow_dont
, /* complain_on_overflow */
1484 bfd_elf_generic_reloc
, /* special_function */
1485 AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19
), /* name */
1486 FALSE
, /* partial_inplace */
1487 0x1ffffc, /* src_mask */
1488 0x1ffffc, /* dst_mask */
1489 FALSE
), /* pcrel_offset */
1491 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC
), /* type */
1493 2, /* size (0 = byte, 1 = short, 2 = long) */
1495 FALSE
, /* pc_relative */
1497 complain_overflow_dont
, /* complain_on_overflow */
1498 bfd_elf_generic_reloc
, /* special_function */
1499 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC
), /* name */
1500 FALSE
, /* partial_inplace */
1501 0xffff, /* src_mask */
1502 0xffff, /* dst_mask */
1503 FALSE
), /* pcrel_offset */
1505 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1
), /* type */
1506 16, /* rightshift */
1507 2, /* size (0 = byte, 1 = short, 2 = long) */
1509 FALSE
, /* pc_relative */
1511 complain_overflow_unsigned
, /* complain_on_overflow */
1512 bfd_elf_generic_reloc
, /* special_function */
1513 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1
), /* name */
1514 FALSE
, /* partial_inplace */
1515 0xffff, /* src_mask */
1516 0xffff, /* dst_mask */
1517 FALSE
), /* pcrel_offset */
1519 /* ADD: bit[23:12] of byte offset to module TLS base address. */
1520 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12
), /* type */
1521 12, /* rightshift */
1522 2, /* size (0 = byte, 1 = short, 2 = long) */
1524 FALSE
, /* pc_relative */
1526 complain_overflow_unsigned
, /* complain_on_overflow */
1527 bfd_elf_generic_reloc
, /* special_function */
1528 AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12
), /* name */
1529 FALSE
, /* partial_inplace */
1530 0xfff, /* src_mask */
1531 0xfff, /* dst_mask */
1532 FALSE
), /* pcrel_offset */
1534 /* Unsigned 12 bit byte offset to module TLS base address. */
1535 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12
), /* type */
1537 2, /* size (0 = byte, 1 = short, 2 = long) */
1539 FALSE
, /* pc_relative */
1541 complain_overflow_unsigned
, /* complain_on_overflow */
1542 bfd_elf_generic_reloc
, /* special_function */
1543 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12
), /* name */
1544 FALSE
, /* partial_inplace */
1545 0xfff, /* src_mask */
1546 0xfff, /* dst_mask */
1547 FALSE
), /* pcrel_offset */
1549 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
1550 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC
), /* type */
1552 2, /* size (0 = byte, 1 = short, 2 = long) */
1554 FALSE
, /* pc_relative */
1556 complain_overflow_dont
, /* complain_on_overflow */
1557 bfd_elf_generic_reloc
, /* special_function */
1558 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC
), /* name */
1559 FALSE
, /* partial_inplace */
1560 0xfff, /* src_mask */
1561 0xfff, /* dst_mask */
1562 FALSE
), /* pcrel_offset */
1564 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1565 HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC
), /* type */
1567 2, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE
, /* pc_relative */
1571 complain_overflow_dont
, /* complain_on_overflow */
1572 bfd_elf_generic_reloc
, /* special_function */
1573 AARCH64_R_STR (TLSLD_ADD_LO12_NC
), /* name */
1574 FALSE
, /* partial_inplace */
1575 0xfff, /* src_mask */
1576 0xfff, /* dst_mask */
1577 FALSE
), /* pcrel_offset */
1579 /* Get to the page for the GOT entry for the symbol
1580 (G(S) - P) using an ADRP instruction. */
1581 HOWTO (AARCH64_R (TLSLD_ADR_PAGE21
), /* type */
1582 12, /* rightshift */
1583 2, /* size (0 = byte, 1 = short, 2 = long) */
1585 TRUE
, /* pc_relative */
1587 complain_overflow_signed
, /* complain_on_overflow */
1588 bfd_elf_generic_reloc
, /* special_function */
1589 AARCH64_R_STR (TLSLD_ADR_PAGE21
), /* name */
1590 FALSE
, /* partial_inplace */
1591 0x1fffff, /* src_mask */
1592 0x1fffff, /* dst_mask */
1593 TRUE
), /* pcrel_offset */
1595 HOWTO (AARCH64_R (TLSLD_ADR_PREL21
), /* type */
1597 2, /* size (0 = byte, 1 = short, 2 = long) */
1599 TRUE
, /* pc_relative */
1601 complain_overflow_signed
, /* complain_on_overflow */
1602 bfd_elf_generic_reloc
, /* special_function */
1603 AARCH64_R_STR (TLSLD_ADR_PREL21
), /* name */
1604 FALSE
, /* partial_inplace */
1605 0x1fffff, /* src_mask */
1606 0x1fffff, /* dst_mask */
1607 TRUE
), /* pcrel_offset */
1609 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1610 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12
), /* type */
1612 2, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE
, /* pc_relative */
1616 complain_overflow_unsigned
, /* complain_on_overflow */
1617 bfd_elf_generic_reloc
, /* special_function */
1618 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12
), /* name */
1619 FALSE
, /* partial_inplace */
1620 0x1ffc00, /* src_mask */
1621 0x1ffc00, /* dst_mask */
1622 FALSE
), /* pcrel_offset */
1624 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
1625 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC
), /* type */
1627 2, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE
, /* pc_relative */
1631 complain_overflow_dont
, /* complain_on_overflow */
1632 bfd_elf_generic_reloc
, /* special_function */
1633 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC
), /* name */
1634 FALSE
, /* partial_inplace */
1635 0x1ffc00, /* src_mask */
1636 0x1ffc00, /* dst_mask */
1637 FALSE
), /* pcrel_offset */
1639 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1640 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12
), /* type */
1642 2, /* size (0 = byte, 1 = short, 2 = long) */
1644 FALSE
, /* pc_relative */
1646 complain_overflow_unsigned
, /* complain_on_overflow */
1647 bfd_elf_generic_reloc
, /* special_function */
1648 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12
), /* name */
1649 FALSE
, /* partial_inplace */
1650 0x3ffc00, /* src_mask */
1651 0x3ffc00, /* dst_mask */
1652 FALSE
), /* pcrel_offset */
1654 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
1655 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC
), /* type */
1657 2, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE
, /* pc_relative */
1661 complain_overflow_dont
, /* complain_on_overflow */
1662 bfd_elf_generic_reloc
, /* special_function */
1663 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC
), /* name */
1664 FALSE
, /* partial_inplace */
1665 0xffc00, /* src_mask */
1666 0xffc00, /* dst_mask */
1667 FALSE
), /* pcrel_offset */
1669 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1670 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12
), /* type */
1672 2, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE
, /* pc_relative */
1676 complain_overflow_unsigned
, /* complain_on_overflow */
1677 bfd_elf_generic_reloc
, /* special_function */
1678 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12
), /* name */
1679 FALSE
, /* partial_inplace */
1680 0x3ffc00, /* src_mask */
1681 0x3ffc00, /* dst_mask */
1682 FALSE
), /* pcrel_offset */
1684 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
1685 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC
), /* type */
1687 2, /* size (0 = byte, 1 = short, 2 = long) */
1689 FALSE
, /* pc_relative */
1691 complain_overflow_dont
, /* complain_on_overflow */
1692 bfd_elf_generic_reloc
, /* special_function */
1693 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC
), /* name */
1694 FALSE
, /* partial_inplace */
1695 0x7fc00, /* src_mask */
1696 0x7fc00, /* dst_mask */
1697 FALSE
), /* pcrel_offset */
1699 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1700 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12
), /* type */
1702 2, /* size (0 = byte, 1 = short, 2 = long) */
1704 FALSE
, /* pc_relative */
1706 complain_overflow_unsigned
, /* complain_on_overflow */
1707 bfd_elf_generic_reloc
, /* special_function */
1708 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12
), /* name */
1709 FALSE
, /* partial_inplace */
1710 0x3ffc00, /* src_mask */
1711 0x3ffc00, /* dst_mask */
1712 FALSE
), /* pcrel_offset */
1714 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
1715 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC
), /* type */
1717 2, /* size (0 = byte, 1 = short, 2 = long) */
1719 FALSE
, /* pc_relative */
1721 complain_overflow_dont
, /* complain_on_overflow */
1722 bfd_elf_generic_reloc
, /* special_function */
1723 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC
), /* name */
1724 FALSE
, /* partial_inplace */
1725 0x3ffc00, /* src_mask */
1726 0x3ffc00, /* dst_mask */
1727 FALSE
), /* pcrel_offset */
1729 /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
1730 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0
), /* type */
1732 2, /* size (0 = byte, 1 = short, 2 = long) */
1734 FALSE
, /* pc_relative */
1736 complain_overflow_unsigned
, /* complain_on_overflow */
1737 bfd_elf_generic_reloc
, /* special_function */
1738 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0
), /* name */
1739 FALSE
, /* partial_inplace */
1740 0xffff, /* src_mask */
1741 0xffff, /* dst_mask */
1742 FALSE
), /* pcrel_offset */
1744 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
1745 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC
), /* type */
1747 2, /* size (0 = byte, 1 = short, 2 = long) */
1749 FALSE
, /* pc_relative */
1751 complain_overflow_dont
, /* complain_on_overflow */
1752 bfd_elf_generic_reloc
, /* special_function */
1753 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC
), /* name */
1754 FALSE
, /* partial_inplace */
1755 0xffff, /* src_mask */
1756 0xffff, /* dst_mask */
1757 FALSE
), /* pcrel_offset */
1759 /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
1760 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1
), /* type */
1761 16, /* rightshift */
1762 2, /* size (0 = byte, 1 = short, 2 = long) */
1764 FALSE
, /* pc_relative */
1766 complain_overflow_unsigned
, /* complain_on_overflow */
1767 bfd_elf_generic_reloc
, /* special_function */
1768 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1
), /* name */
1769 FALSE
, /* partial_inplace */
1770 0xffff, /* src_mask */
1771 0xffff, /* dst_mask */
1772 FALSE
), /* pcrel_offset */
1774 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
1775 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC
), /* type */
1776 16, /* rightshift */
1777 2, /* size (0 = byte, 1 = short, 2 = long) */
1779 FALSE
, /* pc_relative */
1781 complain_overflow_dont
, /* complain_on_overflow */
1782 bfd_elf_generic_reloc
, /* special_function */
1783 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC
), /* name */
1784 FALSE
, /* partial_inplace */
1785 0xffff, /* src_mask */
1786 0xffff, /* dst_mask */
1787 FALSE
), /* pcrel_offset */
1789 /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
1790 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2
), /* type */
1791 32, /* rightshift */
1792 2, /* size (0 = byte, 1 = short, 2 = long) */
1794 FALSE
, /* pc_relative */
1796 complain_overflow_unsigned
, /* complain_on_overflow */
1797 bfd_elf_generic_reloc
, /* special_function */
1798 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2
), /* name */
1799 FALSE
, /* partial_inplace */
1800 0xffff, /* src_mask */
1801 0xffff, /* dst_mask */
1802 FALSE
), /* pcrel_offset */
1804 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2
), /* type */
1805 32, /* rightshift */
1806 2, /* size (0 = byte, 1 = short, 2 = long) */
1808 FALSE
, /* pc_relative */
1810 complain_overflow_unsigned
, /* complain_on_overflow */
1811 bfd_elf_generic_reloc
, /* special_function */
1812 AARCH64_R_STR (TLSLE_MOVW_TPREL_G2
), /* name */
1813 FALSE
, /* partial_inplace */
1814 0xffff, /* src_mask */
1815 0xffff, /* dst_mask */
1816 FALSE
), /* pcrel_offset */
1818 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1
), /* type */
1819 16, /* rightshift */
1820 2, /* size (0 = byte, 1 = short, 2 = long) */
1822 FALSE
, /* pc_relative */
1824 complain_overflow_dont
, /* complain_on_overflow */
1825 bfd_elf_generic_reloc
, /* special_function */
1826 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1
), /* name */
1827 FALSE
, /* partial_inplace */
1828 0xffff, /* src_mask */
1829 0xffff, /* dst_mask */
1830 FALSE
), /* pcrel_offset */
1832 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC
), /* type */
1833 16, /* rightshift */
1834 2, /* size (0 = byte, 1 = short, 2 = long) */
1836 FALSE
, /* pc_relative */
1838 complain_overflow_dont
, /* complain_on_overflow */
1839 bfd_elf_generic_reloc
, /* special_function */
1840 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC
), /* name */
1841 FALSE
, /* partial_inplace */
1842 0xffff, /* src_mask */
1843 0xffff, /* dst_mask */
1844 FALSE
), /* pcrel_offset */
1846 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0
), /* type */
1848 2, /* size (0 = byte, 1 = short, 2 = long) */
1850 FALSE
, /* pc_relative */
1852 complain_overflow_dont
, /* complain_on_overflow */
1853 bfd_elf_generic_reloc
, /* special_function */
1854 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0
), /* name */
1855 FALSE
, /* partial_inplace */
1856 0xffff, /* src_mask */
1857 0xffff, /* dst_mask */
1858 FALSE
), /* pcrel_offset */
1860 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
), /* type */
1862 2, /* size (0 = byte, 1 = short, 2 = long) */
1864 FALSE
, /* pc_relative */
1866 complain_overflow_dont
, /* complain_on_overflow */
1867 bfd_elf_generic_reloc
, /* special_function */
1868 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC
), /* name */
1869 FALSE
, /* partial_inplace */
1870 0xffff, /* src_mask */
1871 0xffff, /* dst_mask */
1872 FALSE
), /* pcrel_offset */
1874 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12
), /* type */
1875 12, /* rightshift */
1876 2, /* size (0 = byte, 1 = short, 2 = long) */
1878 FALSE
, /* pc_relative */
1880 complain_overflow_unsigned
, /* complain_on_overflow */
1881 bfd_elf_generic_reloc
, /* special_function */
1882 AARCH64_R_STR (TLSLE_ADD_TPREL_HI12
), /* name */
1883 FALSE
, /* partial_inplace */
1884 0xfff, /* src_mask */
1885 0xfff, /* dst_mask */
1886 FALSE
), /* pcrel_offset */
1888 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12
), /* type */
1890 2, /* size (0 = byte, 1 = short, 2 = long) */
1892 FALSE
, /* pc_relative */
1894 complain_overflow_unsigned
, /* complain_on_overflow */
1895 bfd_elf_generic_reloc
, /* special_function */
1896 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12
), /* name */
1897 FALSE
, /* partial_inplace */
1898 0xfff, /* src_mask */
1899 0xfff, /* dst_mask */
1900 FALSE
), /* pcrel_offset */
1902 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
), /* type */
1904 2, /* size (0 = byte, 1 = short, 2 = long) */
1906 FALSE
, /* pc_relative */
1908 complain_overflow_dont
, /* complain_on_overflow */
1909 bfd_elf_generic_reloc
, /* special_function */
1910 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC
), /* name */
1911 FALSE
, /* partial_inplace */
1912 0xfff, /* src_mask */
1913 0xfff, /* dst_mask */
1914 FALSE
), /* pcrel_offset */
1916 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1917 HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12
), /* type */
1919 2, /* size (0 = byte, 1 = short, 2 = long) */
1921 FALSE
, /* pc_relative */
1923 complain_overflow_unsigned
, /* complain_on_overflow */
1924 bfd_elf_generic_reloc
, /* special_function */
1925 AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12
), /* name */
1926 FALSE
, /* partial_inplace */
1927 0x1ffc00, /* src_mask */
1928 0x1ffc00, /* dst_mask */
1929 FALSE
), /* pcrel_offset */
1931 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */
1932 HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC
), /* type */
1934 2, /* size (0 = byte, 1 = short, 2 = long) */
1936 FALSE
, /* pc_relative */
1938 complain_overflow_dont
, /* complain_on_overflow */
1939 bfd_elf_generic_reloc
, /* special_function */
1940 AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC
), /* name */
1941 FALSE
, /* partial_inplace */
1942 0x1ffc00, /* src_mask */
1943 0x1ffc00, /* dst_mask */
1944 FALSE
), /* pcrel_offset */
1946 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1947 HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12
), /* type */
1949 2, /* size (0 = byte, 1 = short, 2 = long) */
1951 FALSE
, /* pc_relative */
1953 complain_overflow_unsigned
, /* complain_on_overflow */
1954 bfd_elf_generic_reloc
, /* special_function */
1955 AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12
), /* name */
1956 FALSE
, /* partial_inplace */
1957 0xffc00, /* src_mask */
1958 0xffc00, /* dst_mask */
1959 FALSE
), /* pcrel_offset */
1961 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */
1962 HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC
), /* type */
1964 2, /* size (0 = byte, 1 = short, 2 = long) */
1966 FALSE
, /* pc_relative */
1968 complain_overflow_dont
, /* complain_on_overflow */
1969 bfd_elf_generic_reloc
, /* special_function */
1970 AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC
), /* name */
1971 FALSE
, /* partial_inplace */
1972 0xffc00, /* src_mask */
1973 0xffc00, /* dst_mask */
1974 FALSE
), /* pcrel_offset */
1976 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1977 HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12
), /* type */
1979 2, /* size (0 = byte, 1 = short, 2 = long) */
1981 FALSE
, /* pc_relative */
1983 complain_overflow_unsigned
, /* complain_on_overflow */
1984 bfd_elf_generic_reloc
, /* special_function */
1985 AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12
), /* name */
1986 FALSE
, /* partial_inplace */
1987 0x7fc00, /* src_mask */
1988 0x7fc00, /* dst_mask */
1989 FALSE
), /* pcrel_offset */
1991 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */
1992 HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC
), /* type */
1994 2, /* size (0 = byte, 1 = short, 2 = long) */
1996 FALSE
, /* pc_relative */
1998 complain_overflow_dont
, /* complain_on_overflow */
1999 bfd_elf_generic_reloc
, /* special_function */
2000 AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC
), /* name */
2001 FALSE
, /* partial_inplace */
2002 0x7fc00, /* src_mask */
2003 0x7fc00, /* dst_mask */
2004 FALSE
), /* pcrel_offset */
2006 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
2007 HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12
), /* type */
2009 2, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE
, /* pc_relative */
2013 complain_overflow_unsigned
, /* complain_on_overflow */
2014 bfd_elf_generic_reloc
, /* special_function */
2015 AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12
), /* name */
2016 FALSE
, /* partial_inplace */
2017 0x3ffc00, /* src_mask */
2018 0x3ffc00, /* dst_mask */
2019 FALSE
), /* pcrel_offset */
2021 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */
2022 HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC
), /* type */
2024 2, /* size (0 = byte, 1 = short, 2 = long) */
2026 FALSE
, /* pc_relative */
2028 complain_overflow_dont
, /* complain_on_overflow */
2029 bfd_elf_generic_reloc
, /* special_function */
2030 AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC
), /* name */
2031 FALSE
, /* partial_inplace */
2032 0x3ffc00, /* src_mask */
2033 0x3ffc00, /* dst_mask */
2034 FALSE
), /* pcrel_offset */
2036 HOWTO (AARCH64_R (TLSDESC_LD_PREL19
), /* type */
2038 2, /* size (0 = byte, 1 = short, 2 = long) */
2040 TRUE
, /* pc_relative */
2042 complain_overflow_dont
, /* complain_on_overflow */
2043 bfd_elf_generic_reloc
, /* special_function */
2044 AARCH64_R_STR (TLSDESC_LD_PREL19
), /* name */
2045 FALSE
, /* partial_inplace */
2046 0x0ffffe0, /* src_mask */
2047 0x0ffffe0, /* dst_mask */
2048 TRUE
), /* pcrel_offset */
2050 HOWTO (AARCH64_R (TLSDESC_ADR_PREL21
), /* type */
2052 2, /* size (0 = byte, 1 = short, 2 = long) */
2054 TRUE
, /* pc_relative */
2056 complain_overflow_dont
, /* complain_on_overflow */
2057 bfd_elf_generic_reloc
, /* special_function */
2058 AARCH64_R_STR (TLSDESC_ADR_PREL21
), /* name */
2059 FALSE
, /* partial_inplace */
2060 0x1fffff, /* src_mask */
2061 0x1fffff, /* dst_mask */
2062 TRUE
), /* pcrel_offset */
2064 /* Get to the page for the GOT entry for the symbol
2065 (G(S) - P) using an ADRP instruction. */
2066 HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21
), /* type */
2067 12, /* rightshift */
2068 2, /* size (0 = byte, 1 = short, 2 = long) */
2070 TRUE
, /* pc_relative */
2072 complain_overflow_dont
, /* complain_on_overflow */
2073 bfd_elf_generic_reloc
, /* special_function */
2074 AARCH64_R_STR (TLSDESC_ADR_PAGE21
), /* name */
2075 FALSE
, /* partial_inplace */
2076 0x1fffff, /* src_mask */
2077 0x1fffff, /* dst_mask */
2078 TRUE
), /* pcrel_offset */
2080 /* LD64: GOT offset G(S) & 0xff8. */
2081 HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12
), /* type */
2083 2, /* size (0 = byte, 1 = short, 2 = long) */
2085 FALSE
, /* pc_relative */
2087 complain_overflow_dont
, /* complain_on_overflow */
2088 bfd_elf_generic_reloc
, /* special_function */
2089 AARCH64_R_STR (TLSDESC_LD64_LO12
), /* name */
2090 FALSE
, /* partial_inplace */
2091 0xff8, /* src_mask */
2092 0xff8, /* dst_mask */
2093 FALSE
), /* pcrel_offset */
2095 /* LD32: GOT offset G(S) & 0xffc. */
2096 HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC
), /* type */
2098 2, /* size (0 = byte, 1 = short, 2 = long) */
2100 FALSE
, /* pc_relative */
2102 complain_overflow_dont
, /* complain_on_overflow */
2103 bfd_elf_generic_reloc
, /* special_function */
2104 AARCH64_R_STR (TLSDESC_LD32_LO12_NC
), /* name */
2105 FALSE
, /* partial_inplace */
2106 0xffc, /* src_mask */
2107 0xffc, /* dst_mask */
2108 FALSE
), /* pcrel_offset */
2110 /* ADD: GOT offset G(S) & 0xfff. */
2111 HOWTO (AARCH64_R (TLSDESC_ADD_LO12
), /* type */
2113 2, /* size (0 = byte, 1 = short, 2 = long) */
2115 FALSE
, /* pc_relative */
2117 complain_overflow_dont
,/* complain_on_overflow */
2118 bfd_elf_generic_reloc
, /* special_function */
2119 AARCH64_R_STR (TLSDESC_ADD_LO12
), /* name */
2120 FALSE
, /* partial_inplace */
2121 0xfff, /* src_mask */
2122 0xfff, /* dst_mask */
2123 FALSE
), /* pcrel_offset */
2125 HOWTO64 (AARCH64_R (TLSDESC_OFF_G1
), /* type */
2126 16, /* rightshift */
2127 2, /* size (0 = byte, 1 = short, 2 = long) */
2129 FALSE
, /* pc_relative */
2131 complain_overflow_unsigned
, /* complain_on_overflow */
2132 bfd_elf_generic_reloc
, /* special_function */
2133 AARCH64_R_STR (TLSDESC_OFF_G1
), /* name */
2134 FALSE
, /* partial_inplace */
2135 0xffff, /* src_mask */
2136 0xffff, /* dst_mask */
2137 FALSE
), /* pcrel_offset */
2139 HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC
), /* type */
2141 2, /* size (0 = byte, 1 = short, 2 = long) */
2143 FALSE
, /* pc_relative */
2145 complain_overflow_dont
, /* complain_on_overflow */
2146 bfd_elf_generic_reloc
, /* special_function */
2147 AARCH64_R_STR (TLSDESC_OFF_G0_NC
), /* name */
2148 FALSE
, /* partial_inplace */
2149 0xffff, /* src_mask */
2150 0xffff, /* dst_mask */
2151 FALSE
), /* pcrel_offset */
2153 HOWTO64 (AARCH64_R (TLSDESC_LDR
), /* type */
2155 2, /* size (0 = byte, 1 = short, 2 = long) */
2157 FALSE
, /* pc_relative */
2159 complain_overflow_dont
, /* complain_on_overflow */
2160 bfd_elf_generic_reloc
, /* special_function */
2161 AARCH64_R_STR (TLSDESC_LDR
), /* name */
2162 FALSE
, /* partial_inplace */
2165 FALSE
), /* pcrel_offset */
2167 HOWTO64 (AARCH64_R (TLSDESC_ADD
), /* type */
2169 2, /* size (0 = byte, 1 = short, 2 = long) */
2171 FALSE
, /* pc_relative */
2173 complain_overflow_dont
, /* complain_on_overflow */
2174 bfd_elf_generic_reloc
, /* special_function */
2175 AARCH64_R_STR (TLSDESC_ADD
), /* name */
2176 FALSE
, /* partial_inplace */
2179 FALSE
), /* pcrel_offset */
2181 HOWTO (AARCH64_R (TLSDESC_CALL
), /* type */
2183 2, /* size (0 = byte, 1 = short, 2 = long) */
2185 FALSE
, /* pc_relative */
2187 complain_overflow_dont
, /* complain_on_overflow */
2188 bfd_elf_generic_reloc
, /* special_function */
2189 AARCH64_R_STR (TLSDESC_CALL
), /* name */
2190 FALSE
, /* partial_inplace */
2193 FALSE
), /* pcrel_offset */
2195 /* Get to the page for the GOT entry for the symbol
2196 (G(S) - P) using an ADRP instruction. */
2197 HOWTO64 (MORELLO_R (TLSDESC_ADR_PAGE20
), /* type */
2198 12, /* rightshift */
2199 2, /* size (0 = byte, 1 = short, 2 = long) */
2201 TRUE
, /* pc_relative */
2203 complain_overflow_dont
, /* complain_on_overflow */
2204 bfd_elf_generic_reloc
, /* special_function */
2205 MORELLO_R_STR (TLSDESC_ADR_PAGE20
), /* name */
2206 FALSE
, /* partial_inplace */
2207 0xfffff, /* src_mask */
2208 0xfffff, /* dst_mask */
2209 TRUE
), /* pcrel_offset */
2211 /* LD128: GOT offset G(S) & 0xff0. */
2212 HOWTO64 (MORELLO_R (TLSDESC_LD128_LO12
), /* type */
2214 2, /* size (0 = byte, 1 = short, 2 = long) */
2216 FALSE
, /* pc_relative */
2218 complain_overflow_dont
, /* complain_on_overflow */
2219 bfd_elf_generic_reloc
, /* special_function */
2220 MORELLO_R_STR (TLSDESC_LD128_LO12
), /* name */
2221 FALSE
, /* partial_inplace */
2222 0xff0, /* src_mask */
2223 0xff0, /* dst_mask */
2224 FALSE
), /* pcrel_offset */
2226 HOWTO64 (MORELLO_R (TLSDESC_CALL
), /* type */
2228 2, /* size (0 = byte, 1 = short, 2 = long) */
2230 FALSE
, /* pc_relative */
2232 complain_overflow_dont
, /* complain_on_overflow */
2233 bfd_elf_generic_reloc
, /* special_function */
2234 MORELLO_R_STR (TLSDESC_CALL
), /* name */
2235 FALSE
, /* partial_inplace */
2238 FALSE
), /* pcrel_offset */
2240 HOWTO (AARCH64_R (COPY
), /* type */
2242 2, /* size (0 = byte, 1 = short, 2 = long) */
2244 FALSE
, /* pc_relative */
2246 complain_overflow_bitfield
, /* complain_on_overflow */
2247 bfd_elf_generic_reloc
, /* special_function */
2248 AARCH64_R_STR (COPY
), /* name */
2249 TRUE
, /* partial_inplace */
2250 0xffffffff, /* src_mask */
2251 0xffffffff, /* dst_mask */
2252 FALSE
), /* pcrel_offset */
2254 HOWTO (AARCH64_R (GLOB_DAT
), /* type */
2256 2, /* size (0 = byte, 1 = short, 2 = long) */
2258 FALSE
, /* pc_relative */
2260 complain_overflow_bitfield
, /* complain_on_overflow */
2261 bfd_elf_generic_reloc
, /* special_function */
2262 AARCH64_R_STR (GLOB_DAT
), /* name */
2263 TRUE
, /* partial_inplace */
2264 0xffffffff, /* src_mask */
2265 0xffffffff, /* dst_mask */
2266 FALSE
), /* pcrel_offset */
2268 HOWTO (AARCH64_R (JUMP_SLOT
), /* type */
2270 2, /* size (0 = byte, 1 = short, 2 = long) */
2272 FALSE
, /* pc_relative */
2274 complain_overflow_bitfield
, /* complain_on_overflow */
2275 bfd_elf_generic_reloc
, /* special_function */
2276 AARCH64_R_STR (JUMP_SLOT
), /* name */
2277 TRUE
, /* partial_inplace */
2278 0xffffffff, /* src_mask */
2279 0xffffffff, /* dst_mask */
2280 FALSE
), /* pcrel_offset */
2282 HOWTO (AARCH64_R (RELATIVE
), /* type */
2284 2, /* size (0 = byte, 1 = short, 2 = long) */
2286 FALSE
, /* pc_relative */
2288 complain_overflow_bitfield
, /* complain_on_overflow */
2289 bfd_elf_generic_reloc
, /* special_function */
2290 AARCH64_R_STR (RELATIVE
), /* name */
2291 TRUE
, /* partial_inplace */
2292 ALL_ONES
, /* src_mask */
2293 ALL_ONES
, /* dst_mask */
2294 FALSE
), /* pcrel_offset */
2296 HOWTO (AARCH64_R (TLS_DTPMOD
), /* type */
2298 2, /* size (0 = byte, 1 = short, 2 = long) */
2300 FALSE
, /* pc_relative */
2302 complain_overflow_dont
, /* complain_on_overflow */
2303 bfd_elf_generic_reloc
, /* special_function */
2305 AARCH64_R_STR (TLS_DTPMOD64
), /* name */
2307 AARCH64_R_STR (TLS_DTPMOD
), /* name */
2309 FALSE
, /* partial_inplace */
2311 ALL_ONES
, /* dst_mask */
2312 FALSE
), /* pc_reloffset */
2314 HOWTO (AARCH64_R (TLS_DTPREL
), /* type */
2316 2, /* size (0 = byte, 1 = short, 2 = long) */
2318 FALSE
, /* pc_relative */
2320 complain_overflow_dont
, /* complain_on_overflow */
2321 bfd_elf_generic_reloc
, /* special_function */
2323 AARCH64_R_STR (TLS_DTPREL64
), /* name */
2325 AARCH64_R_STR (TLS_DTPREL
), /* name */
2327 FALSE
, /* partial_inplace */
2329 ALL_ONES
, /* dst_mask */
2330 FALSE
), /* pcrel_offset */
2332 HOWTO (AARCH64_R (TLS_TPREL
), /* type */
2334 2, /* size (0 = byte, 1 = short, 2 = long) */
2336 FALSE
, /* pc_relative */
2338 complain_overflow_dont
, /* complain_on_overflow */
2339 bfd_elf_generic_reloc
, /* special_function */
2341 AARCH64_R_STR (TLS_TPREL64
), /* name */
2343 AARCH64_R_STR (TLS_TPREL
), /* name */
2345 FALSE
, /* partial_inplace */
2347 ALL_ONES
, /* dst_mask */
2348 FALSE
), /* pcrel_offset */
2350 HOWTO (AARCH64_R (TLSDESC
), /* type */
2352 2, /* size (0 = byte, 1 = short, 2 = long) */
2354 FALSE
, /* pc_relative */
2356 complain_overflow_dont
, /* complain_on_overflow */
2357 bfd_elf_generic_reloc
, /* special_function */
2358 AARCH64_R_STR (TLSDESC
), /* name */
2359 FALSE
, /* partial_inplace */
2361 ALL_ONES
, /* dst_mask */
2362 FALSE
), /* pcrel_offset */
2364 HOWTO (AARCH64_R (IRELATIVE
), /* type */
2366 2, /* size (0 = byte, 1 = short, 2 = long) */
2368 FALSE
, /* pc_relative */
2370 complain_overflow_bitfield
, /* complain_on_overflow */
2371 bfd_elf_generic_reloc
, /* special_function */
2372 AARCH64_R_STR (IRELATIVE
), /* name */
2373 FALSE
, /* partial_inplace */
2375 ALL_ONES
, /* dst_mask */
2376 FALSE
), /* pcrel_offset */
2378 HOWTO64 (MORELLO_R (CAPINIT
), /* type */
2380 4, /* size (0 = byte, 1 = short, 2 = long) */
2382 FALSE
, /* pc_relative */
2384 complain_overflow_dont
, /* complain_on_overflow */
2385 bfd_elf_generic_reloc
, /* special_function */
2386 MORELLO_R_STR (CAPINIT
), /* name */
2387 FALSE
, /* partial_inplace */
2388 ALL_ONES
, /* src_mask */
2389 ALL_ONES
, /* dst_mask */
2390 FALSE
), /* pcrel_offset */
2392 HOWTO64 (MORELLO_R (GLOB_DAT
),/* type */
2394 2, /* size (0 = byte, 1 = short, 2 = long) */
2396 FALSE
, /* pc_relative */
2398 complain_overflow_bitfield
, /* complain_on_overflow */
2399 bfd_elf_generic_reloc
, /* special_function */
2400 MORELLO_R_STR (GLOB_DAT
), /* name */
2401 TRUE
, /* partial_inplace */
2402 0xffffffff, /* src_mask */
2403 0xffffffff, /* dst_mask */
2404 FALSE
), /* pcrel_offset */
2406 HOWTO64 (MORELLO_R (JUMP_SLOT
), /* type */
2408 2, /* size (0 = byte, 1 = short, 2 = long) */
2410 FALSE
, /* pc_relative */
2412 complain_overflow_bitfield
, /* complain_on_overflow */
2413 bfd_elf_generic_reloc
, /* special_function */
2414 MORELLO_R_STR (JUMP_SLOT
), /* name */
2415 TRUE
, /* partial_inplace */
2416 0xffffffff, /* src_mask */
2417 0xffffffff, /* dst_mask */
2418 FALSE
), /* pcrel_offset */
2420 HOWTO64 (MORELLO_R (RELATIVE
), /* type */
2422 2, /* size (0 = byte, 1 = short, 2 = long) */
2424 FALSE
, /* pc_relative */
2426 complain_overflow_bitfield
, /* complain_on_overflow */
2427 bfd_elf_generic_reloc
, /* special_function */
2428 MORELLO_R_STR (RELATIVE
), /* name */
2429 TRUE
, /* partial_inplace */
2430 ALL_ONES
, /* src_mask */
2431 ALL_ONES
, /* dst_mask */
2432 FALSE
), /* pcrel_offset */
2434 HOWTO64 (MORELLO_R (IRELATIVE
), /* type */
2436 2, /* size (0 = byte, 1 = short, 2 = long) */
2438 FALSE
, /* pc_relative */
2440 complain_overflow_bitfield
, /* complain_on_overflow */
2441 bfd_elf_generic_reloc
, /* special_function */
2442 MORELLO_R_STR (IRELATIVE
), /* name */
2443 FALSE
, /* partial_inplace */
2445 ALL_ONES
, /* dst_mask */
2446 FALSE
), /* pcrel_offset */
2448 HOWTO64 (MORELLO_R (TLSDESC
), /* type */
2450 2, /* size (0 = byte, 1 = short, 2 = long) */
2452 FALSE
, /* pc_relative */
2454 complain_overflow_dont
, /* complain_on_overflow */
2455 bfd_elf_generic_reloc
, /* special_function */
2456 MORELLO_R_STR (TLSDESC
), /* name */
2457 FALSE
, /* partial_inplace */
2459 ALL_ONES
, /* dst_mask */
2460 FALSE
), /* pcrel_offset */
2465 static reloc_howto_type elfNN_aarch64_howto_none
=
2466 HOWTO (R_AARCH64_NONE
, /* type */
2468 3, /* size (0 = byte, 1 = short, 2 = long) */
2470 FALSE
, /* pc_relative */
2472 complain_overflow_dont
,/* complain_on_overflow */
2473 bfd_elf_generic_reloc
, /* special_function */
2474 "R_AARCH64_NONE", /* name */
2475 FALSE
, /* partial_inplace */
2478 FALSE
); /* pcrel_offset */
2480 /* Given HOWTO, return the bfd internal relocation enumerator. */
2482 static bfd_reloc_code_real_type
2483 elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type
*howto
)
2486 = (int) ARRAY_SIZE (elfNN_aarch64_howto_table
);
2487 const ptrdiff_t offset
2488 = howto
- elfNN_aarch64_howto_table
;
2490 if (offset
> 0 && offset
< size
- 1)
2491 return BFD_RELOC_AARCH64_RELOC_START
+ offset
;
2493 if (howto
== &elfNN_aarch64_howto_none
)
2494 return BFD_RELOC_AARCH64_NONE
;
2496 return BFD_RELOC_AARCH64_RELOC_START
;
2499 /* Given R_TYPE, return the bfd internal relocation enumerator. */
2501 static bfd_reloc_code_real_type
2502 elfNN_aarch64_bfd_reloc_from_type (bfd
*abfd
, unsigned int r_type
)
2504 static bfd_boolean initialized_p
= FALSE
;
2505 /* Indexed by R_TYPE, values are offsets in the howto_table. */
2506 static unsigned int offsets
[R_AARCH64_end
];
2512 for (i
= 1; i
< ARRAY_SIZE (elfNN_aarch64_howto_table
) - 1; ++i
)
2513 if (elfNN_aarch64_howto_table
[i
].type
!= 0)
2514 offsets
[elfNN_aarch64_howto_table
[i
].type
] = i
;
2516 initialized_p
= TRUE
;
2519 if (r_type
== R_AARCH64_NONE
|| r_type
== R_AARCH64_NULL
)
2520 return BFD_RELOC_AARCH64_NONE
;
2522 /* PR 17512: file: b371e70a. */
2523 if (r_type
>= R_AARCH64_end
)
2525 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2527 bfd_set_error (bfd_error_bad_value
);
2528 return BFD_RELOC_AARCH64_NONE
;
2531 return BFD_RELOC_AARCH64_RELOC_START
+ offsets
[r_type
];
2534 struct elf_aarch64_reloc_map
2536 bfd_reloc_code_real_type from
;
2537 bfd_reloc_code_real_type to
;
2540 /* Map bfd generic reloc to AArch64-specific reloc. */
2541 static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map
[] =
2543 {BFD_RELOC_NONE
, BFD_RELOC_AARCH64_NONE
},
2545 /* Basic data relocations. */
2546 {BFD_RELOC_CTOR
, BFD_RELOC_AARCH64_NN
},
2547 {BFD_RELOC_64
, BFD_RELOC_AARCH64_64
},
2548 {BFD_RELOC_32
, BFD_RELOC_AARCH64_32
},
2549 {BFD_RELOC_16
, BFD_RELOC_AARCH64_16
},
2550 {BFD_RELOC_64_PCREL
, BFD_RELOC_AARCH64_64_PCREL
},
2551 {BFD_RELOC_32_PCREL
, BFD_RELOC_AARCH64_32_PCREL
},
2552 {BFD_RELOC_16_PCREL
, BFD_RELOC_AARCH64_16_PCREL
},
2555 /* Given the bfd internal relocation enumerator in CODE, return the
2556 corresponding howto entry. */
2558 static reloc_howto_type
*
2559 elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code
)
2563 /* Convert bfd generic reloc to AArch64-specific reloc. */
2564 if (code
< BFD_RELOC_AARCH64_RELOC_START
2565 || code
> BFD_RELOC_AARCH64_RELOC_END
)
2566 for (i
= 0; i
< ARRAY_SIZE (elf_aarch64_reloc_map
); i
++)
2567 if (elf_aarch64_reloc_map
[i
].from
== code
)
2569 code
= elf_aarch64_reloc_map
[i
].to
;
2573 if (code
> BFD_RELOC_AARCH64_RELOC_START
2574 && code
< BFD_RELOC_AARCH64_RELOC_END
)
2575 if (elfNN_aarch64_howto_table
[code
- BFD_RELOC_AARCH64_RELOC_START
].type
)
2576 return &elfNN_aarch64_howto_table
[code
- BFD_RELOC_AARCH64_RELOC_START
];
2578 if (code
== BFD_RELOC_AARCH64_NONE
)
2579 return &elfNN_aarch64_howto_none
;
2584 static reloc_howto_type
*
2585 elfNN_aarch64_howto_from_type (bfd
*abfd
, unsigned int r_type
)
2587 bfd_reloc_code_real_type val
;
2588 reloc_howto_type
*howto
;
2593 bfd_set_error (bfd_error_bad_value
);
2598 if (r_type
== R_AARCH64_NONE
)
2599 return &elfNN_aarch64_howto_none
;
2601 val
= elfNN_aarch64_bfd_reloc_from_type (abfd
, r_type
);
2602 howto
= elfNN_aarch64_howto_from_bfd_reloc (val
);
2607 bfd_set_error (bfd_error_bad_value
);
2612 elfNN_aarch64_info_to_howto (bfd
*abfd
, arelent
*bfd_reloc
,
2613 Elf_Internal_Rela
*elf_reloc
)
2615 unsigned int r_type
;
2617 r_type
= ELFNN_R_TYPE (elf_reloc
->r_info
);
2618 bfd_reloc
->howto
= elfNN_aarch64_howto_from_type (abfd
, r_type
);
2620 if (bfd_reloc
->howto
== NULL
)
2622 /* xgettext:c-format */
2623 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd
, r_type
);
2629 static reloc_howto_type
*
2630 elfNN_aarch64_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2631 bfd_reloc_code_real_type code
)
2633 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (code
);
2638 bfd_set_error (bfd_error_bad_value
);
2642 static reloc_howto_type
*
2643 elfNN_aarch64_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2648 for (i
= 1; i
< ARRAY_SIZE (elfNN_aarch64_howto_table
) - 1; ++i
)
2649 if (elfNN_aarch64_howto_table
[i
].name
!= NULL
2650 && strcasecmp (elfNN_aarch64_howto_table
[i
].name
, r_name
) == 0)
2651 return &elfNN_aarch64_howto_table
[i
];
2656 #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
2657 #define TARGET_LITTLE_NAME "elfNN-littleaarch64"
2658 #define TARGET_BIG_SYM aarch64_elfNN_be_vec
2659 #define TARGET_BIG_NAME "elfNN-bigaarch64"
2661 /* The linker script knows the section names for placement.
2662 The entry_names are used to do simple name mangling on the stubs.
2663 Given a function name, and its type, the stub can be found. The
2664 name can be changed. The only requirement is the %s be present. */
2665 #define STUB_ENTRY_NAME "__%s%s_veneer"
2667 /* The name of the dynamic interpreter. This is put in the .interp
2669 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2671 #define AARCH64_MAX_FWD_BRANCH_OFFSET \
2672 (((1 << 25) - 1) << 2)
2673 #define AARCH64_MAX_BWD_BRANCH_OFFSET \
2676 #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
2677 #define AARCH64_MIN_ADRP_IMM (-(1 << 20))
2679 #define C64_MAX_ADRP_IMM ((1 << 19) - 1)
2680 #define C64_MIN_ADRP_IMM (-(1 << 19))
2683 aarch64_branch_reloc_p (unsigned int r_type
)
2687 case MORELLO_R (JUMP26
):
2688 case MORELLO_R (CALL26
):
2689 case AARCH64_R (JUMP26
):
2690 case AARCH64_R (CALL26
):
2700 aarch64_valid_for_adrp_p (bfd_vma value
, bfd_vma place
)
2702 bfd_signed_vma offset
= (bfd_signed_vma
) (PG (value
) - PG (place
)) >> 12;
2703 return offset
<= AARCH64_MAX_ADRP_IMM
&& offset
>= AARCH64_MIN_ADRP_IMM
;
2707 c64_valid_for_adrp_p (bfd_vma value
, bfd_vma place
)
2709 bfd_signed_vma offset
= (bfd_signed_vma
) (PG (value
) - PG (place
)) >> 12;
2710 return offset
<= C64_MAX_ADRP_IMM
&& offset
>= C64_MIN_ADRP_IMM
;
2714 aarch64_valid_branch_p (bfd_vma value
, bfd_vma place
)
2716 bfd_signed_vma offset
= (bfd_signed_vma
) (value
- place
);
2717 return (offset
<= AARCH64_MAX_FWD_BRANCH_OFFSET
2718 && offset
>= AARCH64_MAX_BWD_BRANCH_OFFSET
);
2721 static const uint32_t aarch64_adrp_branch_stub
[] =
2723 0x90000010, /* adrp ip0, X */
2724 /* R_AARCH64_ADR_HI21_PCREL(X) */
2725 0x91000210, /* add ip0, ip0, :lo12:X */
2726 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2727 0xd61f0200, /* br ip0 */
2730 static const uint32_t aarch64_long_branch_stub
[] =
2733 0x58000090, /* ldr ip0, 1f */
2735 0x18000090, /* ldr wip0, 1f */
2737 0x10000011, /* adr ip1, #0 */
2738 0x8b110210, /* add ip0, ip0, ip1 */
2739 0xd61f0200, /* br ip0 */
2740 0x00000000, /* 1: .xword or .word
2741 R_AARCH64_PRELNN(X) + 12
2746 static const uint32_t aarch64_erratum_835769_stub
[] =
2748 0x00000000, /* Placeholder for multiply accumulate. */
2749 0x14000000, /* b <label> */
2752 static const uint32_t aarch64_erratum_843419_stub
[] =
2754 0x00000000, /* Placeholder for LDR instruction. */
2755 0x14000000, /* b <label> */
2758 static const uint32_t aarch64_c64_branch_stub
[] =
2760 0xc2c273e0, /* bx #4 */
2761 0x90800010, /* adrp c16, X */
2762 /* R_MORELLO_ADR_HI20_PCREL(X) */
2763 0x02000210, /* add c16, c16, :lo12:X */
2764 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2765 0xc2c21200, /* br c16 */
2768 static const uint32_t c64_aarch64_branch_stub
[] =
2770 0x90800010, /* adrp c16, X */
2771 /* R_MORELLO_ADR_HI20_PCREL(X) */
2772 0x02000210, /* add c16, c16, :lo12:X */
2773 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2774 0xc2c21200, /* br c16 */
2777 /* Section name for stubs is the associated section name plus this
2779 #define STUB_SUFFIX ".stub"
2781 enum elf_aarch64_stub_type
2784 aarch64_stub_adrp_branch
,
2785 aarch64_stub_long_branch
,
2786 aarch64_stub_erratum_835769_veneer
,
2787 aarch64_stub_erratum_843419_veneer
,
2788 aarch64_stub_branch_c64
,
2789 c64_stub_branch_aarch64
,
2790 c64_stub_branch_c64
,
2793 struct elf_aarch64_stub_hash_entry
2795 /* Base hash table entry structure. */
2796 struct bfd_hash_entry root
;
2798 /* The stub section. */
2801 /* Offset within stub_sec of the beginning of this stub. */
2802 bfd_vma stub_offset
;
2804 /* Given the symbol's value and its section we can determine its final
2805 value when building the stubs (so the stub knows where to jump). */
2806 bfd_vma target_value
;
2807 asection
*target_section
;
2809 enum elf_aarch64_stub_type stub_type
;
2811 /* The symbol table entry, if any, that this was derived from. */
2812 struct elf_aarch64_link_hash_entry
*h
;
2814 /* Destination symbol type */
2815 unsigned char st_type
;
2817 /* Where this stub is being called from, or, in the case of combined
2818 stub sections, the first input section in the group. */
2821 /* The name for the local symbol at the start of this stub. The
2822 stub name in the hash table has to be unique; this does not, so
2823 it can be friendlier. */
2826 /* The instruction which caused this stub to be generated (only valid for
2827 erratum 835769 workaround stubs at present). */
2828 uint32_t veneered_insn
;
2830 /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
2831 bfd_vma adrp_offset
;
2834 /* Used to build a map of a section. This is required for mixed-endian
2837 typedef struct elf_elf_section_map
2842 elf_aarch64_section_map
;
2845 typedef struct _aarch64_elf_section_data
2847 struct bfd_elf_section_data elf
;
2848 unsigned int mapcount
;
2849 unsigned int mapsize
;
2850 elf_aarch64_section_map
*map
;
2853 _aarch64_elf_section_data
;
2855 #define elf_aarch64_section_data(sec) \
2856 ((_aarch64_elf_section_data *) elf_section_data (sec))
2858 /* Used to order a list of mapping symbols by address. */
2861 elf_aarch64_compare_mapping (const void *a
, const void *b
)
2863 const elf_aarch64_section_map
*amap
= (const elf_aarch64_section_map
*) a
;
2864 const elf_aarch64_section_map
*bmap
= (const elf_aarch64_section_map
*) b
;
2866 if (amap
->vma
> bmap
->vma
)
2868 else if (amap
->vma
< bmap
->vma
)
2870 else if (amap
->type
> bmap
->type
)
2871 /* Ensure results do not depend on the host qsort for objects with
2872 multiple mapping symbols at the same address by sorting on type
2875 else if (amap
->type
< bmap
->type
)
2881 static _aarch64_elf_section_data
*
2882 elf_aarch64_section_data_get (asection
*sec
)
2884 _aarch64_elf_section_data
*sec_data
= elf_aarch64_section_data(sec
);
2886 /* A section that does not have aarch64 section data, so it does not have any
2887 map information. Assume A64. */
2888 if (sec_data
== NULL
|| !sec_data
->elf
.is_target_section_data
)
2891 if (sec_data
->sorted
)
2894 qsort (sec_data
->map
, sec_data
->mapcount
, sizeof (elf_aarch64_section_map
),
2895 elf_aarch64_compare_mapping
);
2897 sec_data
->sorted
= TRUE
;
2903 /* Returns TRUE if the label with st_value as VALUE is within a C64 code
2907 c64_value_p (asection
*section
, unsigned int value
)
2909 struct _aarch64_elf_section_data
*sec_data
=
2910 elf_aarch64_section_data_get (section
);
2912 if (sec_data
== NULL
)
2917 for (span
= 0; span
< sec_data
->mapcount
; span
++)
2919 unsigned int span_start
= sec_data
->map
[span
].vma
;
2920 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
2921 ? sec_data
->map
[0].vma
+ section
->size
2922 : sec_data
->map
[span
+ 1].vma
);
2923 char span_type
= sec_data
->map
[span
].type
;
2925 if (span_start
<= value
&& value
< span_end
&& span_type
== 'c')
2931 /* The size of the thread control block which is defined to be two pointers. */
2932 #define TCB_SIZE (ARCH_SIZE/8)*2
2934 struct elf_aarch64_local_symbol
2936 unsigned int got_type
;
2937 bfd_signed_vma got_refcount
;
2940 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
2941 offset is from the end of the jump table and reserved entries
2944 The magic value (bfd_vma) -1 indicates that an offset has not be
2946 bfd_vma tlsdesc_got_jump_table_offset
;
2949 struct elf_aarch64_obj_tdata
2951 struct elf_obj_tdata root
;
2953 /* local symbol descriptors */
2954 struct elf_aarch64_local_symbol
*locals
;
2956 /* Zero to warn when linking objects with incompatible enum sizes. */
2957 int no_enum_size_warning
;
2959 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2960 int no_wchar_size_warning
;
2962 /* All GNU_PROPERTY_AARCH64_FEATURE_1_AND properties. */
2963 uint32_t gnu_and_prop
;
2965 /* Zero to warn when linking objects with incompatible
2966 GNU_PROPERTY_AARCH64_FEATURE_1_BTI. */
2969 /* PLT type based on security. */
2970 aarch64_plt_type plt_type
;
2972 /* Flag to check if section maps have been initialised for all sections in
2974 bfd_boolean secmaps_initialised
;
2977 #define elf_aarch64_tdata(bfd) \
2978 ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
2980 #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
2982 #define is_aarch64_elf(bfd) \
2983 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2984 && elf_tdata (bfd) != NULL \
2985 && elf_object_id (bfd) == AARCH64_ELF_DATA)
2988 elfNN_aarch64_mkobject (bfd
*abfd
)
2990 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_aarch64_obj_tdata
),
2994 #define elf_aarch64_hash_entry(ent) \
2995 ((struct elf_aarch64_link_hash_entry *)(ent))
2997 #define GOT_UNKNOWN 0
2998 #define GOT_NORMAL 1
2999 #define GOT_TLS_GD 2
3000 #define GOT_TLS_IE 4
3001 #define GOT_TLSDESC_GD 8
3004 #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
3006 /* AArch64 ELF linker hash entry. */
3007 struct elf_aarch64_link_hash_entry
3009 struct elf_link_hash_entry root
;
3011 /* Since PLT entries have variable size, we need to record the
3012 index into .got.plt instead of recomputing it from the PLT
3014 bfd_signed_vma plt_got_offset
;
3016 /* Bit mask representing the type of GOT entry(s) if any required by
3018 unsigned int got_type
;
3020 /* A pointer to the most recently used stub hash entry against this
3022 struct elf_aarch64_stub_hash_entry
*stub_cache
;
3024 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
3025 is from the end of the jump table and reserved entries within the PLTGOT.
3027 The magic value (bfd_vma) -1 indicates that an offset has not
3029 bfd_vma tlsdesc_got_jump_table_offset
;
3033 elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry
*h
,
3035 unsigned long r_symndx
)
3038 return elf_aarch64_hash_entry (h
)->got_type
;
3040 if (! elf_aarch64_locals (abfd
))
3043 return elf_aarch64_locals (abfd
)[r_symndx
].got_type
;
3046 /* Get the AArch64 elf linker hash table from a link_info structure. */
3047 #define elf_aarch64_hash_table(info) \
3048 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
3050 #define aarch64_stub_hash_lookup(table, string, create, copy) \
3051 ((struct elf_aarch64_stub_hash_entry *) \
3052 bfd_hash_lookup ((table), (string), (create), (copy)))
3054 /* AArch64 ELF linker hash table. */
3055 struct elf_aarch64_link_hash_table
3057 /* The main hash table. */
3058 struct elf_link_hash_table root
;
3060 /* Nonzero to force PIC branch veneers. */
3063 /* Fix erratum 835769. */
3064 int fix_erratum_835769
;
3066 /* Fix erratum 843419. */
3067 erratum_84319_opts fix_erratum_843419
;
3069 /* Don't apply link-time values for dynamic relocations. */
3070 int no_apply_dynamic_relocs
;
3072 /* The number of bytes in the initial entry in the PLT. */
3073 bfd_size_type plt_header_size
;
3075 /* The bytes of the initial PLT entry. */
3076 const bfd_byte
*plt0_entry
;
3078 /* The number of bytes in the subsequent PLT entries. */
3079 bfd_size_type plt_entry_size
;
3081 /* The bytes of the subsequent PLT entry. */
3082 const bfd_byte
*plt_entry
;
3084 /* For convenience in allocate_dynrelocs. */
3087 /* The amount of space used by the reserved portion of the sgotplt
3088 section, plus whatever space is used by the jump slots. */
3089 bfd_vma sgotplt_jump_table_size
;
3091 /* The stub hash table. */
3092 struct bfd_hash_table stub_hash_table
;
3094 /* Linker stub bfd. */
3097 /* Linker call-backs. */
3098 asection
*(*add_stub_section
) (const char *, asection
*);
3099 void (*layout_sections_again
) (void);
3101 /* Array to keep track of which stub sections have been created, and
3102 information on stub grouping. */
3105 /* This is the section to which stubs in the group will be
3108 /* The stub section. */
3112 /* Assorted information used by elfNN_aarch64_size_stubs. */
3113 unsigned int bfd_count
;
3114 unsigned int top_index
;
3115 asection
**input_list
;
3117 /* JUMP_SLOT relocs for variant PCS symbols may be present. */
3120 /* The number of bytes in the PLT enty for the TLS descriptor. */
3121 bfd_size_type tlsdesc_plt_entry_size
;
3123 /* Used by local STT_GNU_IFUNC symbols. */
3124 htab_t loc_hash_table
;
3125 void * loc_hash_memory
;
3127 /* Used for capability relocations. */
3130 bfd_boolean c64_output
;
3133 /* Create an entry in an AArch64 ELF linker hash table. */
3135 static struct bfd_hash_entry
*
3136 elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3137 struct bfd_hash_table
*table
,
3140 struct elf_aarch64_link_hash_entry
*ret
=
3141 (struct elf_aarch64_link_hash_entry
*) entry
;
3143 /* Allocate the structure if it has not already been allocated by a
3146 ret
= bfd_hash_allocate (table
,
3147 sizeof (struct elf_aarch64_link_hash_entry
));
3149 return (struct bfd_hash_entry
*) ret
;
3151 /* Call the allocation method of the superclass. */
3152 ret
= ((struct elf_aarch64_link_hash_entry
*)
3153 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
3157 ret
->got_type
= GOT_UNKNOWN
;
3158 ret
->plt_got_offset
= (bfd_vma
) - 1;
3159 ret
->stub_cache
= NULL
;
3160 ret
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
3163 return (struct bfd_hash_entry
*) ret
;
3166 /* Initialize an entry in the stub hash table. */
3168 static struct bfd_hash_entry
*
3169 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3170 struct bfd_hash_table
*table
, const char *string
)
3172 /* Allocate the structure if it has not already been allocated by a
3176 entry
= bfd_hash_allocate (table
,
3178 elf_aarch64_stub_hash_entry
));
3183 /* Call the allocation method of the superclass. */
3184 entry
= bfd_hash_newfunc (entry
, table
, string
);
3187 struct elf_aarch64_stub_hash_entry
*eh
;
3189 /* Initialize the local fields. */
3190 eh
= (struct elf_aarch64_stub_hash_entry
*) entry
;
3191 eh
->adrp_offset
= 0;
3192 eh
->stub_sec
= NULL
;
3193 eh
->stub_offset
= 0;
3194 eh
->target_value
= 0;
3195 eh
->target_section
= NULL
;
3196 eh
->stub_type
= aarch64_stub_none
;
3204 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
3205 for local symbol so that we can handle local STT_GNU_IFUNC symbols
3206 as global symbol. We reuse indx and dynstr_index for local symbol
3207 hash since they aren't used by global symbols in this backend. */
3210 elfNN_aarch64_local_htab_hash (const void *ptr
)
3212 struct elf_link_hash_entry
*h
3213 = (struct elf_link_hash_entry
*) ptr
;
3214 return ELF_LOCAL_SYMBOL_HASH (h
->indx
, h
->dynstr_index
);
3217 /* Compare local hash entries. */
3220 elfNN_aarch64_local_htab_eq (const void *ptr1
, const void *ptr2
)
3222 struct elf_link_hash_entry
*h1
3223 = (struct elf_link_hash_entry
*) ptr1
;
3224 struct elf_link_hash_entry
*h2
3225 = (struct elf_link_hash_entry
*) ptr2
;
3227 return h1
->indx
== h2
->indx
&& h1
->dynstr_index
== h2
->dynstr_index
;
3230 /* Find and/or create a hash entry for local symbol. */
3232 static struct elf_link_hash_entry
*
3233 elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table
*htab
,
3234 bfd
*abfd
, const Elf_Internal_Rela
*rel
,
3237 struct elf_aarch64_link_hash_entry e
, *ret
;
3238 asection
*sec
= abfd
->sections
;
3239 hashval_t h
= ELF_LOCAL_SYMBOL_HASH (sec
->id
,
3240 ELFNN_R_SYM (rel
->r_info
));
3243 e
.root
.indx
= sec
->id
;
3244 e
.root
.dynstr_index
= ELFNN_R_SYM (rel
->r_info
);
3245 slot
= htab_find_slot_with_hash (htab
->loc_hash_table
, &e
, h
,
3246 create
? INSERT
: NO_INSERT
);
3253 ret
= (struct elf_aarch64_link_hash_entry
*) *slot
;
3257 ret
= (struct elf_aarch64_link_hash_entry
*)
3258 objalloc_alloc ((struct objalloc
*) htab
->loc_hash_memory
,
3259 sizeof (struct elf_aarch64_link_hash_entry
));
3262 memset (ret
, 0, sizeof (*ret
));
3263 ret
->root
.indx
= sec
->id
;
3264 ret
->root
.dynstr_index
= ELFNN_R_SYM (rel
->r_info
);
3265 ret
->root
.dynindx
= -1;
3271 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3274 elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info
*info
,
3275 struct elf_link_hash_entry
*dir
,
3276 struct elf_link_hash_entry
*ind
)
3278 struct elf_aarch64_link_hash_entry
*edir
, *eind
;
3280 edir
= (struct elf_aarch64_link_hash_entry
*) dir
;
3281 eind
= (struct elf_aarch64_link_hash_entry
*) ind
;
3283 if (ind
->root
.type
== bfd_link_hash_indirect
)
3285 /* Copy over PLT info. */
3286 if (dir
->got
.refcount
<= 0)
3288 edir
->got_type
= eind
->got_type
;
3289 eind
->got_type
= GOT_UNKNOWN
;
3293 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
3296 /* Merge non-visibility st_other attributes. */
3299 elfNN_aarch64_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
3300 const Elf_Internal_Sym
*isym
,
3301 bfd_boolean definition ATTRIBUTE_UNUSED
,
3302 bfd_boolean dynamic ATTRIBUTE_UNUSED
)
3304 unsigned int isym_sto
= isym
->st_other
& ~ELF_ST_VISIBILITY (-1);
3305 unsigned int h_sto
= h
->other
& ~ELF_ST_VISIBILITY (-1);
3307 if (isym_sto
== h_sto
)
3310 if (isym_sto
& ~STO_AARCH64_VARIANT_PCS
)
3311 /* Not fatal, this callback cannot fail. */
3312 _bfd_error_handler (_("unknown attribute for symbol `%s': 0x%02x"),
3313 h
->root
.root
.string
, isym_sto
);
3315 /* Note: Ideally we would warn about any attribute mismatch, but
3316 this api does not allow that without substantial changes. */
3317 if (isym_sto
& STO_AARCH64_VARIANT_PCS
)
3318 h
->other
|= STO_AARCH64_VARIANT_PCS
;
3321 /* Destroy an AArch64 elf linker hash table. */
3324 elfNN_aarch64_link_hash_table_free (bfd
*obfd
)
3326 struct elf_aarch64_link_hash_table
*ret
3327 = (struct elf_aarch64_link_hash_table
*) obfd
->link
.hash
;
3329 if (ret
->loc_hash_table
)
3330 htab_delete (ret
->loc_hash_table
);
3331 if (ret
->loc_hash_memory
)
3332 objalloc_free ((struct objalloc
*) ret
->loc_hash_memory
);
3334 bfd_hash_table_free (&ret
->stub_hash_table
);
3335 _bfd_elf_link_hash_table_free (obfd
);
3338 /* Create an AArch64 elf linker hash table. */
3340 static struct bfd_link_hash_table
*
3341 elfNN_aarch64_link_hash_table_create (bfd
*abfd
)
3343 struct elf_aarch64_link_hash_table
*ret
;
3344 size_t amt
= sizeof (struct elf_aarch64_link_hash_table
);
3346 ret
= bfd_zmalloc (amt
);
3350 if (!_bfd_elf_link_hash_table_init
3351 (&ret
->root
, abfd
, elfNN_aarch64_link_hash_newfunc
,
3352 sizeof (struct elf_aarch64_link_hash_entry
), AARCH64_ELF_DATA
))
3358 ret
->plt_header_size
= PLT_ENTRY_SIZE
;
3359 ret
->plt0_entry
= elfNN_aarch64_small_plt0_entry
;
3360 ret
->plt_entry_size
= PLT_SMALL_ENTRY_SIZE
;
3361 ret
->plt_entry
= elfNN_aarch64_small_plt_entry
;
3362 ret
->tlsdesc_plt_entry_size
= PLT_TLSDESC_ENTRY_SIZE
;
3364 ret
->root
.tlsdesc_got
= (bfd_vma
) - 1;
3366 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
,
3367 sizeof (struct elf_aarch64_stub_hash_entry
)))
3369 _bfd_elf_link_hash_table_free (abfd
);
3373 ret
->loc_hash_table
= htab_try_create (1024,
3374 elfNN_aarch64_local_htab_hash
,
3375 elfNN_aarch64_local_htab_eq
,
3377 ret
->loc_hash_memory
= objalloc_create ();
3378 if (!ret
->loc_hash_table
|| !ret
->loc_hash_memory
)
3380 elfNN_aarch64_link_hash_table_free (abfd
);
3383 ret
->root
.root
.hash_table_free
= elfNN_aarch64_link_hash_table_free
;
3385 return &ret
->root
.root
;
3388 /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */
3391 aarch64_relocate (unsigned int r_type
, bfd
*input_bfd
, asection
*input_section
,
3392 bfd_vma offset
, bfd_vma value
)
3394 reloc_howto_type
*howto
;
3397 howto
= elfNN_aarch64_howto_from_type (input_bfd
, r_type
);
3398 place
= (input_section
->output_section
->vma
+ input_section
->output_offset
3401 r_type
= elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
3402 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, r_type
, place
,
3404 return _bfd_aarch64_elf_put_addend (input_bfd
,
3405 input_section
->contents
+ offset
, r_type
,
3406 howto
, value
) == bfd_reloc_ok
;
3409 /* Return interworking stub for a relocation. */
3411 static enum elf_aarch64_stub_type
3412 aarch64_interwork_stub (unsigned int r_type
,
3413 bfd_boolean branch_to_c64
)
3417 case MORELLO_R (JUMP26
):
3418 case MORELLO_R (CALL26
):
3420 return c64_stub_branch_aarch64
;
3422 case AARCH64_R (JUMP26
):
3423 case AARCH64_R (CALL26
):
3425 return aarch64_stub_branch_c64
;
3431 return aarch64_stub_none
;
3434 static enum elf_aarch64_stub_type
3435 aarch64_select_branch_stub (bfd_vma value
, bfd_vma place
)
3437 if (aarch64_valid_for_adrp_p (value
, place
))
3438 return aarch64_stub_adrp_branch
;
3439 return aarch64_stub_long_branch
;
3442 /* Determine the type of stub needed, if any, for a call. */
3444 static enum elf_aarch64_stub_type
3445 aarch64_type_of_stub (asection
*input_sec
,
3446 const Elf_Internal_Rela
*rel
,
3448 unsigned char st_type
,
3449 bfd_vma destination
)
3452 bfd_signed_vma branch_offset
;
3453 unsigned int r_type
= ELFNN_R_TYPE (rel
->r_info
);
3454 enum elf_aarch64_stub_type stub_type
= aarch64_stub_none
;
3456 if (st_type
!= STT_FUNC
3457 && (sym_sec
== input_sec
))
3460 /* Determine where the call point is. */
3461 location
= (input_sec
->output_offset
3462 + input_sec
->output_section
->vma
+ rel
->r_offset
);
3464 branch_offset
= (bfd_signed_vma
) (destination
- location
);
3466 /* For A64 <-> C64 branches we only come here for jumps to PLT. Treat them
3467 as regular branches and leave the interworking to PLT. */
3468 if (branch_offset
> AARCH64_MAX_FWD_BRANCH_OFFSET
3469 || branch_offset
< AARCH64_MAX_BWD_BRANCH_OFFSET
)
3473 /* We don't want to redirect any old unconditional jump in this way,
3474 only one which is being used for a sibcall, where it is
3475 acceptable for the IP0 and IP1 registers to be clobbered. */
3476 case AARCH64_R (CALL26
):
3477 case AARCH64_R (JUMP26
):
3478 return aarch64_stub_long_branch
;
3479 case MORELLO_R (CALL26
):
3480 case MORELLO_R (JUMP26
):
3481 return c64_stub_branch_c64
;
3487 return aarch64_stub_none
;
3490 /* Return a string to add as suffix to a veneer name. */
3493 aarch64_lookup_stub_type_suffix (enum elf_aarch64_stub_type stub_type
)
3497 case aarch64_stub_branch_c64
:
3499 case c64_stub_branch_aarch64
:
3507 /* Build a name for an entry in the stub hash table. */
3510 elfNN_aarch64_stub_name (const asection
*input_section
,
3511 const asection
*sym_sec
,
3512 const struct elf_aarch64_link_hash_entry
*hash
,
3513 const Elf_Internal_Rela
*rel
,
3514 enum elf_aarch64_stub_type stub_type
)
3518 const char *suffix
= aarch64_lookup_stub_type_suffix (stub_type
);;
3522 len
= 8 + 1 + strlen (hash
->root
.root
.root
.string
) + 1 + 16 + 1;
3523 stub_name
= bfd_malloc (len
);
3524 if (stub_name
!= NULL
)
3525 snprintf (stub_name
, len
, "%08x_%s%s+%" BFD_VMA_FMT
"x",
3526 (unsigned int) input_section
->id
,
3527 hash
->root
.root
.root
.string
,
3528 suffix
, rel
->r_addend
);
3532 len
= 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
3533 stub_name
= bfd_malloc (len
);
3534 if (stub_name
!= NULL
)
3535 snprintf (stub_name
, len
, "%08x_%x:%x%s+%" BFD_VMA_FMT
"x",
3536 (unsigned int) input_section
->id
,
3537 (unsigned int) sym_sec
->id
,
3538 (unsigned int) ELFNN_R_SYM (rel
->r_info
),
3539 suffix
, rel
->r_addend
);
3545 /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For
3546 executable PLT slots where the executable never takes the address of those
3547 functions, the function symbols are not added to the hash table. */
3550 elf_aarch64_hash_symbol (struct elf_link_hash_entry
*h
)
3552 if (h
->plt
.offset
!= (bfd_vma
) -1
3554 && !h
->pointer_equality_needed
)
3557 return _bfd_elf_hash_symbol (h
);
3560 /* Look up an entry in the stub hash. Stub entries are cached because
3561 creating the stub name takes a bit of time. */
3563 static struct elf_aarch64_stub_hash_entry
*
3564 elfNN_aarch64_get_stub_entry (const asection
*input_section
,
3565 const asection
*sym_sec
,
3566 struct elf_link_hash_entry
*hash
,
3567 const Elf_Internal_Rela
*rel
,
3568 struct elf_aarch64_link_hash_table
*htab
,
3569 enum elf_aarch64_stub_type stub_type
)
3571 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3572 struct elf_aarch64_link_hash_entry
*h
=
3573 (struct elf_aarch64_link_hash_entry
*) hash
;
3574 const asection
*id_sec
;
3576 if ((input_section
->flags
& SEC_CODE
) == 0)
3579 /* If this input section is part of a group of sections sharing one
3580 stub section, then use the id of the first section in the group.
3581 Stub names need to include a section id, as there may well be
3582 more than one stub used to reach say, printf, and we need to
3583 distinguish between them. */
3584 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3586 if (h
!= NULL
&& h
->stub_cache
!= NULL
3587 && h
->stub_cache
->h
== h
&& h
->stub_cache
->id_sec
== id_sec
)
3589 stub_entry
= h
->stub_cache
;
3595 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, h
, rel
, stub_type
);
3596 if (stub_name
== NULL
)
3599 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
3600 stub_name
, FALSE
, FALSE
);
3602 h
->stub_cache
= stub_entry
;
3611 /* Create a stub section. */
3614 _bfd_aarch64_create_stub_section (asection
*section
,
3615 struct elf_aarch64_link_hash_table
*htab
)
3621 namelen
= strlen (section
->name
);
3622 len
= namelen
+ sizeof (STUB_SUFFIX
);
3623 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3627 memcpy (s_name
, section
->name
, namelen
);
3628 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3629 return (*htab
->add_stub_section
) (s_name
, section
);
3633 /* Find or create a stub section for a link section.
3635 Fix or create the stub section used to collect stubs attached to
3636 the specified link section. */
3639 _bfd_aarch64_get_stub_for_link_section (asection
*link_section
,
3640 struct elf_aarch64_link_hash_table
*htab
)
3642 if (htab
->stub_group
[link_section
->id
].stub_sec
== NULL
)
3643 htab
->stub_group
[link_section
->id
].stub_sec
3644 = _bfd_aarch64_create_stub_section (link_section
, htab
);
3645 return htab
->stub_group
[link_section
->id
].stub_sec
;
3649 /* Find or create a stub section in the stub group for an input
3653 _bfd_aarch64_create_or_find_stub_sec (asection
*section
,
3654 struct elf_aarch64_link_hash_table
*htab
)
3656 asection
*link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3657 return _bfd_aarch64_get_stub_for_link_section (link_sec
, htab
);
3661 /* Add a new stub entry in the stub group associated with an input
3662 section to the stub hash. Not all fields of the new stub entry are
3665 static struct elf_aarch64_stub_hash_entry
*
3666 _bfd_aarch64_add_stub_entry_in_group (const char *stub_name
,
3668 struct elf_aarch64_link_hash_table
*htab
)
3672 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3674 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3675 stub_sec
= _bfd_aarch64_create_or_find_stub_sec (section
, htab
);
3677 /* Enter this entry into the linker stub hash table. */
3678 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3680 if (stub_entry
== NULL
)
3682 /* xgettext:c-format */
3683 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
3684 section
->owner
, stub_name
);
3688 stub_entry
->stub_sec
= stub_sec
;
3689 stub_entry
->stub_offset
= 0;
3690 stub_entry
->id_sec
= link_sec
;
3695 /* Add a new stub entry in the final stub section to the stub hash.
3696 Not all fields of the new stub entry are initialised. */
3698 static struct elf_aarch64_stub_hash_entry
*
3699 _bfd_aarch64_add_stub_entry_after (const char *stub_name
,
3700 asection
*link_section
,
3701 struct elf_aarch64_link_hash_table
*htab
)
3704 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3707 /* Only create the actual stub if we will end up needing it. */
3708 if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
3709 stub_sec
= _bfd_aarch64_get_stub_for_link_section (link_section
, htab
);
3710 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3712 if (stub_entry
== NULL
)
3714 _bfd_error_handler (_("cannot create stub entry %s"), stub_name
);
3718 stub_entry
->stub_sec
= stub_sec
;
3719 stub_entry
->stub_offset
= 0;
3720 stub_entry
->id_sec
= link_section
;
3727 aarch64_build_one_stub (struct bfd_hash_entry
*gen_entry
,
3730 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3735 bfd_vma veneered_insn_loc
;
3736 bfd_vma veneer_entry_loc
;
3737 bfd_signed_vma branch_offset
= 0;
3738 unsigned int template_size
;
3739 const uint32_t *template;
3741 struct bfd_link_info
*info
;
3743 /* Massage our args to the form they really have. */
3744 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
3746 info
= (struct bfd_link_info
*) in_arg
;
3748 /* Fail if the target section could not be assigned to an output
3749 section. The user should fix his linker script. */
3750 if (stub_entry
->target_section
->output_section
== NULL
3751 && info
->non_contiguous_regions
)
3752 info
->callbacks
->einfo (_("%F%P: Could not assign '%pA' to an output section. "
3754 "--enable-non-contiguous-regions.\n"),
3755 stub_entry
->target_section
);
3757 stub_sec
= stub_entry
->stub_sec
;
3759 /* Make a note of the offset within the stubs for this entry. */
3760 stub_entry
->stub_offset
= stub_sec
->size
;
3761 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
3763 stub_bfd
= stub_sec
->owner
;
3765 /* This is the address of the stub destination. */
3766 sym_value
= (stub_entry
->target_value
3767 + stub_entry
->target_section
->output_offset
3768 + stub_entry
->target_section
->output_section
->vma
);
3770 bfd_vma place
= (stub_entry
->stub_offset
+ stub_sec
->output_section
->vma
3771 + stub_sec
->output_offset
);
3773 if (stub_entry
->stub_type
== aarch64_stub_long_branch
)
3775 /* See if we can relax the stub. */
3776 if (aarch64_valid_for_adrp_p (sym_value
, place
))
3777 stub_entry
->stub_type
= aarch64_select_branch_stub (sym_value
, place
);
3780 if ((stub_entry
->stub_type
== aarch64_stub_branch_c64
3781 || stub_entry
->stub_type
== c64_stub_branch_aarch64
3782 || stub_entry
->stub_type
== c64_stub_branch_c64
)
3783 && !c64_valid_for_adrp_p (sym_value
, place
))
3786 (_("%s: stub target out of range for %s branch"),
3787 stub_entry
->output_name
,
3788 (stub_entry
->stub_type
== aarch64_stub_branch_c64
3789 ? "A64 to C64" : "C64 to A64"));
3790 bfd_set_error (bfd_error_bad_value
);
3794 switch (stub_entry
->stub_type
)
3796 case aarch64_stub_adrp_branch
:
3797 template = aarch64_adrp_branch_stub
;
3798 template_size
= sizeof (aarch64_adrp_branch_stub
);
3800 case aarch64_stub_long_branch
:
3801 template = aarch64_long_branch_stub
;
3802 template_size
= sizeof (aarch64_long_branch_stub
);
3804 case aarch64_stub_erratum_835769_veneer
:
3805 template = aarch64_erratum_835769_stub
;
3806 template_size
= sizeof (aarch64_erratum_835769_stub
);
3808 case aarch64_stub_erratum_843419_veneer
:
3809 template = aarch64_erratum_843419_stub
;
3810 template_size
= sizeof (aarch64_erratum_843419_stub
);
3812 case aarch64_stub_branch_c64
:
3813 template = aarch64_c64_branch_stub
;
3814 template_size
= sizeof (aarch64_c64_branch_stub
);
3816 case c64_stub_branch_aarch64
:
3817 case c64_stub_branch_c64
:
3818 template = c64_aarch64_branch_stub
;
3819 template_size
= sizeof (c64_aarch64_branch_stub
);
3825 for (i
= 0; i
< (template_size
/ sizeof template[0]); i
++)
3827 bfd_putl32 (template[i
], loc
);
3831 template_size
= (template_size
+ 7) & ~7;
3832 stub_sec
->size
+= template_size
;
3834 bfd_vma stub_offset
= stub_entry
->stub_offset
;
3836 switch (stub_entry
->stub_type
)
3838 case aarch64_stub_adrp_branch
:
3839 if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21
), stub_bfd
, stub_sec
,
3840 stub_entry
->stub_offset
, sym_value
))
3841 /* The stub would not have been relaxed if the offset was out
3845 if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC
), stub_bfd
, stub_sec
,
3846 stub_entry
->stub_offset
+ 4, sym_value
))
3850 case aarch64_stub_long_branch
:
3851 /* We want the value relative to the address 12 bytes back from the
3853 if (!aarch64_relocate (AARCH64_R (PRELNN
), stub_bfd
, stub_sec
,
3854 stub_entry
->stub_offset
+ 16, sym_value
+ 12))
3858 case aarch64_stub_erratum_835769_veneer
:
3859 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
3860 + stub_entry
->target_section
->output_offset
3861 + stub_entry
->target_value
;
3862 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
3863 + stub_entry
->stub_sec
->output_offset
3864 + stub_entry
->stub_offset
;
3865 branch_offset
= veneered_insn_loc
- veneer_entry_loc
;
3866 branch_offset
>>= 2;
3867 branch_offset
&= 0x3ffffff;
3868 bfd_putl32 (stub_entry
->veneered_insn
,
3869 stub_sec
->contents
+ stub_entry
->stub_offset
);
3870 bfd_putl32 (template[1] | branch_offset
,
3871 stub_sec
->contents
+ stub_entry
->stub_offset
+ 4);
3874 case aarch64_stub_erratum_843419_veneer
:
3875 if (!aarch64_relocate (AARCH64_R (JUMP26
), stub_bfd
, stub_sec
,
3876 stub_entry
->stub_offset
+ 4, sym_value
+ 4))
3880 case aarch64_stub_branch_c64
:
3883 case c64_stub_branch_aarch64
:
3884 case c64_stub_branch_c64
:
3885 if (!aarch64_relocate (R_MORELLO_ADR_PREL_PG_HI20
, stub_bfd
, stub_sec
,
3886 stub_offset
, sym_value
))
3887 /* We fail early if offset is out of range. */
3890 if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC
), stub_bfd
, stub_sec
,
3891 stub_offset
+ 4, sym_value
))
3902 /* As above, but don't actually build the stub. Just bump offset so
3903 we know stub section sizes. */
3906 aarch64_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
3908 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3909 struct elf_aarch64_link_hash_table
*htab
;
3912 /* Massage our args to the form they really have. */
3913 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
3914 htab
= (struct elf_aarch64_link_hash_table
*) in_arg
;
3916 switch (stub_entry
->stub_type
)
3918 case aarch64_stub_adrp_branch
:
3919 size
= sizeof (aarch64_adrp_branch_stub
);
3921 case aarch64_stub_long_branch
:
3922 size
= sizeof (aarch64_long_branch_stub
);
3924 case aarch64_stub_erratum_835769_veneer
:
3925 size
= sizeof (aarch64_erratum_835769_stub
);
3927 case aarch64_stub_erratum_843419_veneer
:
3929 if (htab
->fix_erratum_843419
== ERRAT_ADR
)
3931 size
= sizeof (aarch64_erratum_843419_stub
);
3934 case aarch64_stub_branch_c64
:
3935 size
= sizeof (aarch64_c64_branch_stub
);
3937 case c64_stub_branch_aarch64
:
3938 case c64_stub_branch_c64
:
3939 size
= sizeof (c64_aarch64_branch_stub
);
3945 size
= (size
+ 7) & ~7;
3946 stub_entry
->stub_sec
->size
+= size
;
3950 /* External entry points for sizing and building linker stubs. */
3952 /* Set up various things so that we can make a list of input sections
3953 for each output section included in the link. Returns -1 on error,
3954 0 when no stubs will be needed, and 1 on success. */
3957 elfNN_aarch64_setup_section_lists (bfd
*output_bfd
,
3958 struct bfd_link_info
*info
)
3961 unsigned int bfd_count
;
3962 unsigned int top_id
, top_index
;
3964 asection
**input_list
, **list
;
3966 struct elf_aarch64_link_hash_table
*htab
=
3967 elf_aarch64_hash_table (info
);
3969 if (!is_elf_hash_table (htab
))
3972 /* Count the number of input BFDs and find the top input section id. */
3973 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3974 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
3977 for (section
= input_bfd
->sections
;
3978 section
!= NULL
; section
= section
->next
)
3980 if (top_id
< section
->id
)
3981 top_id
= section
->id
;
3984 htab
->bfd_count
= bfd_count
;
3986 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3987 htab
->stub_group
= bfd_zmalloc (amt
);
3988 if (htab
->stub_group
== NULL
)
3991 /* We can't use output_bfd->section_count here to find the top output
3992 section index as some sections may have been removed, and
3993 _bfd_strip_section_from_output doesn't renumber the indices. */
3994 for (section
= output_bfd
->sections
, top_index
= 0;
3995 section
!= NULL
; section
= section
->next
)
3997 if (top_index
< section
->index
)
3998 top_index
= section
->index
;
4001 htab
->top_index
= top_index
;
4002 amt
= sizeof (asection
*) * (top_index
+ 1);
4003 input_list
= bfd_malloc (amt
);
4004 htab
->input_list
= input_list
;
4005 if (input_list
== NULL
)
4008 /* For sections we aren't interested in, mark their entries with a
4009 value we can check later. */
4010 list
= input_list
+ top_index
;
4012 *list
= bfd_abs_section_ptr
;
4013 while (list
-- != input_list
);
4015 for (section
= output_bfd
->sections
;
4016 section
!= NULL
; section
= section
->next
)
4018 if ((section
->flags
& SEC_CODE
) != 0)
4019 input_list
[section
->index
] = NULL
;
4025 /* Used by elfNN_aarch64_next_input_section and group_sections. */
4026 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
4028 /* The linker repeatedly calls this function for each input section,
4029 in the order that input sections are linked into output sections.
4030 Build lists of input sections to determine groupings between which
4031 we may insert linker stubs. */
4034 elfNN_aarch64_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
4036 struct elf_aarch64_link_hash_table
*htab
=
4037 elf_aarch64_hash_table (info
);
4039 if (isec
->output_section
->index
<= htab
->top_index
)
4041 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
4043 if (*list
!= bfd_abs_section_ptr
&& (isec
->flags
& SEC_CODE
) != 0)
4045 /* Steal the link_sec pointer for our list. */
4046 /* This happens to make the list in reverse order,
4047 which is what we want. */
4048 PREV_SEC (isec
) = *list
;
4054 /* See whether we can group stub sections together. Grouping stub
4055 sections may result in fewer stubs. More importantly, we need to
4056 put all .init* and .fini* stubs at the beginning of the .init or
4057 .fini output sections respectively, because glibc splits the
4058 _init and _fini functions into multiple parts. Putting a stub in
4059 the middle of a function is not a good idea. */
4062 group_sections (struct elf_aarch64_link_hash_table
*htab
,
4063 bfd_size_type stub_group_size
,
4064 bfd_boolean stubs_always_after_branch
)
4066 asection
**list
= htab
->input_list
;
4070 asection
*tail
= *list
;
4073 if (tail
== bfd_abs_section_ptr
)
4076 /* Reverse the list: we must avoid placing stubs at the
4077 beginning of the section because the beginning of the text
4078 section may be required for an interrupt vector in bare metal
4080 #define NEXT_SEC PREV_SEC
4082 while (tail
!= NULL
)
4084 /* Pop from tail. */
4085 asection
*item
= tail
;
4086 tail
= PREV_SEC (item
);
4089 NEXT_SEC (item
) = head
;
4093 while (head
!= NULL
)
4097 bfd_vma stub_group_start
= head
->output_offset
;
4098 bfd_vma end_of_next
;
4101 while (NEXT_SEC (curr
) != NULL
)
4103 next
= NEXT_SEC (curr
);
4104 end_of_next
= next
->output_offset
+ next
->size
;
4105 if (end_of_next
- stub_group_start
>= stub_group_size
)
4106 /* End of NEXT is too far from start, so stop. */
4108 /* Add NEXT to the group. */
4112 /* OK, the size from the start to the start of CURR is less
4113 than stub_group_size and thus can be handled by one stub
4114 section. (Or the head section is itself larger than
4115 stub_group_size, in which case we may be toast.)
4116 We should really be keeping track of the total size of
4117 stubs added here, as stubs contribute to the final output
4121 next
= NEXT_SEC (head
);
4122 /* Set up this stub group. */
4123 htab
->stub_group
[head
->id
].link_sec
= curr
;
4125 while (head
!= curr
&& (head
= next
) != NULL
);
4127 /* But wait, there's more! Input sections up to stub_group_size
4128 bytes after the stub section can be handled by it too. */
4129 if (!stubs_always_after_branch
)
4131 stub_group_start
= curr
->output_offset
+ curr
->size
;
4133 while (next
!= NULL
)
4135 end_of_next
= next
->output_offset
+ next
->size
;
4136 if (end_of_next
- stub_group_start
>= stub_group_size
)
4137 /* End of NEXT is too far from stubs, so stop. */
4139 /* Add NEXT to the stub group. */
4141 next
= NEXT_SEC (head
);
4142 htab
->stub_group
[head
->id
].link_sec
= curr
;
4148 while (list
++ != htab
->input_list
+ htab
->top_index
);
4150 free (htab
->input_list
);
4156 #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
4158 #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
4159 #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
4160 #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
4161 #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
4162 #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
4163 #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
4165 #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
4166 #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
4167 #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
4168 #define AARCH64_ZR 0x1f
4170 /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
4171 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
4173 #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
4174 #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
4175 #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
4176 #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
4177 #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
4178 #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
4179 #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
4180 #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
4181 #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
4182 #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
4183 #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
4184 #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
4185 #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
4186 #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
4187 #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
4188 #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
4189 #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
4190 #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
4192 /* Classify an INSN if it is indeed a load/store.
4194 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
4196 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
4199 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
4202 aarch64_mem_op_p (uint32_t insn
, unsigned int *rt
, unsigned int *rt2
,
4203 bfd_boolean
*pair
, bfd_boolean
*load
)
4211 /* Bail out quickly if INSN doesn't fall into the load-store
4213 if (!AARCH64_LDST (insn
))
4218 if (AARCH64_LDST_EX (insn
))
4220 *rt
= AARCH64_RT (insn
);
4222 if (AARCH64_BIT (insn
, 21) == 1)
4225 *rt2
= AARCH64_RT2 (insn
);
4227 *load
= AARCH64_LD (insn
);
4230 else if (AARCH64_LDST_NAP (insn
)
4231 || AARCH64_LDSTP_PI (insn
)
4232 || AARCH64_LDSTP_O (insn
)
4233 || AARCH64_LDSTP_PRE (insn
))
4236 *rt
= AARCH64_RT (insn
);
4237 *rt2
= AARCH64_RT2 (insn
);
4238 *load
= AARCH64_LD (insn
);
4241 else if (AARCH64_LDST_PCREL (insn
)
4242 || AARCH64_LDST_UI (insn
)
4243 || AARCH64_LDST_PIIMM (insn
)
4244 || AARCH64_LDST_U (insn
)
4245 || AARCH64_LDST_PREIMM (insn
)
4246 || AARCH64_LDST_RO (insn
)
4247 || AARCH64_LDST_UIMM (insn
))
4249 *rt
= AARCH64_RT (insn
);
4251 if (AARCH64_LDST_PCREL (insn
))
4253 opc
= AARCH64_BITS (insn
, 22, 2);
4254 v
= AARCH64_BIT (insn
, 26);
4255 opc_v
= opc
| (v
<< 2);
4256 *load
= (opc_v
== 1 || opc_v
== 2 || opc_v
== 3
4257 || opc_v
== 5 || opc_v
== 7);
4260 else if (AARCH64_LDST_SIMD_M (insn
)
4261 || AARCH64_LDST_SIMD_M_PI (insn
))
4263 *rt
= AARCH64_RT (insn
);
4264 *load
= AARCH64_BIT (insn
, 22);
4265 opcode
= (insn
>> 12) & 0xf;
4292 else if (AARCH64_LDST_SIMD_S (insn
)
4293 || AARCH64_LDST_SIMD_S_PI (insn
))
4295 *rt
= AARCH64_RT (insn
);
4296 r
= (insn
>> 21) & 1;
4297 *load
= AARCH64_BIT (insn
, 22);
4298 opcode
= (insn
>> 13) & 0x7;
4310 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
4318 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
4330 /* Return TRUE if INSN is multiply-accumulate. */
4333 aarch64_mlxl_p (uint32_t insn
)
4335 uint32_t op31
= AARCH64_OP31 (insn
);
4337 if (AARCH64_MAC (insn
)
4338 && (op31
== 0 || op31
== 1 || op31
== 5)
4339 /* Exclude MUL instructions which are encoded as a multiple accumulate
4341 && AARCH64_RA (insn
) != AARCH64_ZR
)
4347 /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
4348 it is possible for a 64-bit multiply-accumulate instruction to generate an
4349 incorrect result. The details are quite complex and hard to
4350 determine statically, since branches in the code may exist in some
4351 circumstances, but all cases end with a memory (load, store, or
4352 prefetch) instruction followed immediately by the multiply-accumulate
4353 operation. We employ a linker patching technique, by moving the potentially
4354 affected multiply-accumulate instruction into a patch region and replacing
4355 the original instruction with a branch to the patch. This function checks
4356 if INSN_1 is the memory operation followed by a multiply-accumulate
4357 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
4358 if INSN_1 and INSN_2 are safe. */
4361 aarch64_erratum_sequence (uint32_t insn_1
, uint32_t insn_2
)
4371 if (aarch64_mlxl_p (insn_2
)
4372 && aarch64_mem_op_p (insn_1
, &rt
, &rt2
, &pair
, &load
))
4374 /* Any SIMD memory op is independent of the subsequent MLA
4375 by definition of the erratum. */
4376 if (AARCH64_BIT (insn_1
, 26))
4379 /* If not SIMD, check for integer memory ops and MLA relationship. */
4380 rn
= AARCH64_RN (insn_2
);
4381 ra
= AARCH64_RA (insn_2
);
4382 rm
= AARCH64_RM (insn_2
);
4384 /* If this is a load and there's a true(RAW) dependency, we are safe
4385 and this is not an erratum sequence. */
4387 (rt
== rn
|| rt
== rm
|| rt
== ra
4388 || (pair
&& (rt2
== rn
|| rt2
== rm
|| rt2
== ra
))))
4391 /* We conservatively put out stubs for all other cases (including
4401 _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes
)
4403 char *stub_name
= (char *) bfd_malloc
4404 (strlen ("__erratum_835769_veneer_") + 16);
4405 if (stub_name
!= NULL
)
4406 sprintf (stub_name
,"__erratum_835769_veneer_%d", num_fixes
);
4410 /* Scan for Cortex-A53 erratum 835769 sequence.
4412 Return TRUE else FALSE on abnormal termination. */
4415 _bfd_aarch64_erratum_835769_scan (bfd
*input_bfd
,
4416 struct bfd_link_info
*info
,
4417 unsigned int *num_fixes_p
)
4420 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4421 unsigned int num_fixes
= *num_fixes_p
;
4426 for (section
= input_bfd
->sections
;
4428 section
= section
->next
)
4430 bfd_byte
*contents
= NULL
;
4431 struct _aarch64_elf_section_data
*sec_data
;
4434 if (elf_section_type (section
) != SHT_PROGBITS
4435 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
4436 || (section
->flags
& SEC_EXCLUDE
) != 0
4437 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
4438 || (section
->output_section
== bfd_abs_section_ptr
))
4441 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
4442 contents
= elf_section_data (section
)->this_hdr
.contents
;
4443 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
4446 sec_data
= elf_aarch64_section_data (section
);
4448 if (sec_data
->mapcount
)
4449 qsort (sec_data
->map
, sec_data
->mapcount
,
4450 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
4452 for (span
= 0; span
< sec_data
->mapcount
; span
++)
4454 unsigned int span_start
= sec_data
->map
[span
].vma
;
4455 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
4456 ? sec_data
->map
[0].vma
+ section
->size
4457 : sec_data
->map
[span
+ 1].vma
);
4459 char span_type
= sec_data
->map
[span
].type
;
4461 if (span_type
== 'd')
4464 for (i
= span_start
; i
+ 4 < span_end
; i
+= 4)
4466 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
4467 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
4469 if (aarch64_erratum_sequence (insn_1
, insn_2
))
4471 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4472 char *stub_name
= _bfd_aarch64_erratum_835769_stub_name (num_fixes
);
4476 stub_entry
= _bfd_aarch64_add_stub_entry_in_group (stub_name
,
4482 stub_entry
->stub_type
= aarch64_stub_erratum_835769_veneer
;
4483 stub_entry
->target_section
= section
;
4484 stub_entry
->target_value
= i
+ 4;
4485 stub_entry
->veneered_insn
= insn_2
;
4486 stub_entry
->output_name
= stub_name
;
4491 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
4495 *num_fixes_p
= num_fixes
;
4501 /* Test if instruction INSN is ADRP. */
4504 _bfd_aarch64_adrp_p (uint32_t insn
)
4506 return ((insn
& AARCH64_ADRP_OP_MASK
) == AARCH64_ADRP_OP
);
4510 /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
4513 _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1
, uint32_t insn_2
,
4521 return (aarch64_mem_op_p (insn_2
, &rt
, &rt2
, &pair
, &load
)
4524 && AARCH64_LDST_UIMM (insn_3
)
4525 && AARCH64_RN (insn_3
) == AARCH64_RD (insn_1
));
4529 /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
4531 Return TRUE if section CONTENTS at offset I contains one of the
4532 erratum 843419 sequences, otherwise return FALSE. If a sequence is
4533 seen set P_VENEER_I to the offset of the final LOAD/STORE
4534 instruction in the sequence.
4538 _bfd_aarch64_erratum_843419_p (bfd_byte
*contents
, bfd_vma vma
,
4539 bfd_vma i
, bfd_vma span_end
,
4540 bfd_vma
*p_veneer_i
)
4542 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
4544 if (!_bfd_aarch64_adrp_p (insn_1
))
4547 if (span_end
< i
+ 12)
4550 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
4551 uint32_t insn_3
= bfd_getl32 (contents
+ i
+ 8);
4553 if ((vma
& 0xfff) != 0xff8 && (vma
& 0xfff) != 0xffc)
4556 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_3
))
4558 *p_veneer_i
= i
+ 8;
4562 if (span_end
< i
+ 16)
4565 uint32_t insn_4
= bfd_getl32 (contents
+ i
+ 12);
4567 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_4
))
4569 *p_veneer_i
= i
+ 12;
4577 /* Resize all stub sections. */
4580 _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table
*htab
)
4584 /* OK, we've added some stubs. Find out the new size of the
4586 for (section
= htab
->stub_bfd
->sections
;
4587 section
!= NULL
; section
= section
->next
)
4589 /* Ignore non-stub sections. */
4590 if (!strstr (section
->name
, STUB_SUFFIX
))
4595 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_size_one_stub
, htab
);
4597 for (section
= htab
->stub_bfd
->sections
;
4598 section
!= NULL
; section
= section
->next
)
4600 if (!strstr (section
->name
, STUB_SUFFIX
))
4603 /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
4604 as long branch stubs contain a 64-bit address. */
4608 /* Ensure all stub sections have a size which is a multiple of
4609 4096. This is important in order to ensure that the insertion
4610 of stub sections does not in itself move existing code around
4611 in such a way that new errata sequences are created. We only do this
4612 when the ADRP workaround is enabled. If only the ADR workaround is
4613 enabled then the stubs workaround won't ever be used. */
4614 if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
4616 section
->size
= BFD_ALIGN (section
->size
, 0x1000);
4620 /* Construct an erratum 843419 workaround stub name. */
4623 _bfd_aarch64_erratum_843419_stub_name (asection
*input_section
,
4626 const bfd_size_type len
= 8 + 4 + 1 + 8 + 1 + 16 + 1;
4627 char *stub_name
= bfd_malloc (len
);
4629 if (stub_name
!= NULL
)
4630 snprintf (stub_name
, len
, "e843419@%04x_%08x_%" BFD_VMA_FMT
"x",
4631 input_section
->owner
->id
,
4637 /* Build a stub_entry structure describing an 843419 fixup.
4639 The stub_entry constructed is populated with the bit pattern INSN
4640 of the instruction located at OFFSET within input SECTION.
4642 Returns TRUE on success. */
4645 _bfd_aarch64_erratum_843419_fixup (uint32_t insn
,
4646 bfd_vma adrp_offset
,
4647 bfd_vma ldst_offset
,
4649 struct bfd_link_info
*info
)
4651 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4653 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4655 stub_name
= _bfd_aarch64_erratum_843419_stub_name (section
, ldst_offset
);
4656 if (stub_name
== NULL
)
4658 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4666 /* We always place an 843419 workaround veneer in the stub section
4667 attached to the input section in which an erratum sequence has
4668 been found. This ensures that later in the link process (in
4669 elfNN_aarch64_write_section) when we copy the veneered
4670 instruction from the input section into the stub section the
4671 copied instruction will have had any relocations applied to it.
4672 If we placed workaround veneers in any other stub section then we
4673 could not assume that all relocations have been processed on the
4674 corresponding input section at the point we output the stub
4677 stub_entry
= _bfd_aarch64_add_stub_entry_after (stub_name
, section
, htab
);
4678 if (stub_entry
== NULL
)
4684 stub_entry
->adrp_offset
= adrp_offset
;
4685 stub_entry
->target_value
= ldst_offset
;
4686 stub_entry
->target_section
= section
;
4687 stub_entry
->stub_type
= aarch64_stub_erratum_843419_veneer
;
4688 stub_entry
->veneered_insn
= insn
;
4689 stub_entry
->output_name
= stub_name
;
4695 /* Scan an input section looking for the signature of erratum 843419.
4697 Scans input SECTION in INPUT_BFD looking for erratum 843419
4698 signatures, for each signature found a stub_entry is created
4699 describing the location of the erratum for subsequent fixup.
4701 Return TRUE on successful scan, FALSE on failure to scan.
4705 _bfd_aarch64_erratum_843419_scan (bfd
*input_bfd
, asection
*section
,
4706 struct bfd_link_info
*info
)
4708 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4713 if (elf_section_type (section
) != SHT_PROGBITS
4714 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
4715 || (section
->flags
& SEC_EXCLUDE
) != 0
4716 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
4717 || (section
->output_section
== bfd_abs_section_ptr
))
4722 bfd_byte
*contents
= NULL
;
4723 struct _aarch64_elf_section_data
*sec_data
;
4726 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
4727 contents
= elf_section_data (section
)->this_hdr
.contents
;
4728 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
4731 sec_data
= elf_aarch64_section_data (section
);
4733 if (sec_data
->mapcount
)
4734 qsort (sec_data
->map
, sec_data
->mapcount
,
4735 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
4737 for (span
= 0; span
< sec_data
->mapcount
; span
++)
4739 unsigned int span_start
= sec_data
->map
[span
].vma
;
4740 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
4741 ? sec_data
->map
[0].vma
+ section
->size
4742 : sec_data
->map
[span
+ 1].vma
);
4744 char span_type
= sec_data
->map
[span
].type
;
4746 if (span_type
== 'd')
4749 for (i
= span_start
; i
+ 8 < span_end
; i
+= 4)
4751 bfd_vma vma
= (section
->output_section
->vma
4752 + section
->output_offset
4756 if (_bfd_aarch64_erratum_843419_p
4757 (contents
, vma
, i
, span_end
, &veneer_i
))
4759 uint32_t insn
= bfd_getl32 (contents
+ veneer_i
);
4761 if (!_bfd_aarch64_erratum_843419_fixup (insn
, i
, veneer_i
,
4768 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
4777 section_start_symbol (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
,
4780 return section
->vma
== *(bfd_vma
*)valp
;
4783 /* Capability format functions. */
4786 exponent (uint64_t len
)
4788 #define CAP_MAX_EXPONENT 50
4789 /* Size is a 65 bit value, so there's an implicit 0 MSB. */
4790 unsigned zeroes
= __builtin_clzl (len
) + 1;
4792 /* All bits up to and including CAP_MW - 2 are zero. */
4793 if (CAP_MAX_EXPONENT
< zeroes
)
4794 return (unsigned) -1;
4796 return CAP_MAX_EXPONENT
- zeroes
;
4797 #undef CAP_MAX_EXPONENT
4800 #define ONES(x) ((1ULL << (x)) - 1)
4801 #define ALIGN_UP(x, a) (((x) + ONES (a)) & (~ONES (a)))
4804 c64_valid_cap_range (bfd_vma
*basep
, bfd_vma
*limitp
)
4806 bfd_vma base
= *basep
, size
= *limitp
- *basep
;
4810 if ((e
= exponent (size
)) == (unsigned) -1)
4813 size
= ALIGN_UP (size
, e
+ 3);
4815 e
= exponent (size
);
4817 size
= ALIGN_UP (size
, e
+ 3);
4819 base
= ALIGN_UP (base
, e
+ 3);
4821 if (base
== *basep
&& *limitp
== base
+ size
)
4825 *limitp
= base
+ size
;
4829 struct sec_change_queue
4832 struct sec_change_queue
*next
;
4835 /* Queue up the change, sorted in order of the output section vma. */
4838 queue_section_padding (struct sec_change_queue
**queue
, asection
*sec
)
4840 struct sec_change_queue
*q
= *queue
, *last_q
= NULL
, *n
;
4844 if (q
->sec
->vma
> sec
->vma
)
4850 n
= bfd_zmalloc (sizeof (struct sec_change_queue
));
4863 /* Check if the bounds covering all sections between LOW_SEC and HIGH_SEC will
4864 get rounded off in the Morello capability format and if it does, queue up a
4865 change to fix up the section layout. */
4867 record_section_change (asection
*sec
, struct sec_change_queue
**queue
)
4869 bfd_vma low
= sec
->vma
;
4870 bfd_vma high
= sec
->vma
+ sec
->size
;
4872 if (!c64_valid_cap_range (&low
, &high
))
4873 queue_section_padding (queue
, sec
);
4876 /* Make sure that all capabilities that refer to sections have bounds that
4877 won't overlap with neighbouring sections. This is needed in two specific
4878 cases. The first case is that of PCC, which needs to span across all
4879 executable sections as well as the GOT and PLT sections in the output
4880 binary. The second case is that of linker and ldscript defined symbols that
4881 indicate start and/or end of sections.
4883 In both cases, overlap of capability bounds are avoided by aligning the base
4884 of the section and if necessary, adding a pad at the end of the section so
4885 that the section following it starts only after the pad. */
4888 elfNN_c64_resize_sections (bfd
*output_bfd
, struct bfd_link_info
*info
,
4889 void (*c64_pad_section
) (asection
*, bfd_vma
),
4890 void (*layout_sections_again
) (void))
4892 asection
*sec
, *pcc_low_sec
= NULL
, *pcc_high_sec
= NULL
;
4893 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4894 bfd_vma low
= (bfd_vma
) -1, high
= 0;
4897 htab
->layout_sections_again
= layout_sections_again
;
4899 if (!htab
->c64_output
)
4902 struct sec_change_queue
*queue
= NULL
;
4904 /* First, walk through all the relocations to find those referring to linker
4905 defined and ldscript defined symbols since we set their range to their
4907 for (input_bfd
= info
->input_bfds
;
4908 htab
->c64_rel
&& input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
4910 Elf_Internal_Shdr
*symtab_hdr
;
4912 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
4913 if (symtab_hdr
->sh_info
== 0)
4916 for (sec
= input_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4918 Elf_Internal_Rela
*irelaend
, *irela
;
4920 /* If there aren't any relocs, then there's nothing more to do. */
4921 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
4924 irela
= _bfd_elf_link_read_relocs (input_bfd
, sec
, NULL
, NULL
,
4929 /* Now examine each relocation. */
4930 irelaend
= irela
+ sec
->reloc_count
;
4931 for (; irela
< irelaend
; irela
++)
4933 unsigned int r_indx
;
4934 struct elf_link_hash_entry
*h
;
4938 r_indx
= ELFNN_R_SYM (irela
->r_info
);
4940 /* Linker defined or linker script defined symbols are always in
4942 if (r_indx
< symtab_hdr
->sh_info
)
4945 e_indx
= r_indx
- symtab_hdr
->sh_info
;
4946 h
= elf_sym_hashes (input_bfd
)[e_indx
];
4948 /* XXX Does this ever happen? */
4952 os
= h
->root
.u
.def
.section
->output_section
;
4954 if (h
->root
.linker_def
)
4955 record_section_change (os
, &queue
);
4956 else if (h
->root
.ldscript_def
)
4958 const char *name
= h
->root
.root
.string
;
4959 size_t len
= strlen (name
);
4961 if (len
> 8 && name
[0] == '_' && name
[1] == '_'
4962 && (!strncmp (name
+ 2, "start_", 6)
4963 || !strcmp (name
+ len
- 6, "_start")))
4966 bfd_vma value
= os
->vma
+ os
->size
;
4968 os
= bfd_sections_find_if (info
->output_bfd
,
4969 section_start_symbol
, &value
);
4972 record_section_change (os
, &queue
);
4974 /* XXX We're overfitting here because the offset of H within
4975 the output section is not yet resolved and ldscript
4976 defined symbols do not have input section information. */
4978 record_section_change (os
, &queue
);
4984 /* Next, walk through output sections to find the PCC span and add a padding
4985 at the end to ensure that PCC bounds don't bleed into neighbouring
4986 sections. For now PCC needs to encompass all code sections, .got, .plt
4988 for (sec
= output_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4990 /* XXX This is a good place to figure out if there are any readable or
4991 writable sections in the PCC range that are not in the list of
4992 sections we want the PCC to span and then warn the user of it. */
4994 #define NOT_OP_SECTION(s) ((s) == NULL || (s)->output_section != sec)
4996 if ((sec
->flags
& SEC_CODE
) == 0
4997 && NOT_OP_SECTION (htab
->root
.sgotplt
)
4998 && NOT_OP_SECTION (htab
->root
.igotplt
)
4999 && NOT_OP_SECTION (htab
->root
.sgot
)
5000 && NOT_OP_SECTION (htab
->root
.splt
)
5001 && NOT_OP_SECTION (htab
->root
.iplt
))
5009 if (sec
->vma
+ sec
->size
> high
)
5011 high
= sec
->vma
+ sec
->size
;
5015 #undef NOT_OP_SECTION
5018 /* Sequentially add alignment and padding as required. We also need to
5019 account for the PCC-related alignment and padding here since its
5020 requirements could change based on the range of sections it encompasses
5021 and whether they need to be padded or aligned. */
5025 bfd_vma padding
= 0;
5027 low
= queue
->sec
->vma
;
5028 high
= queue
->sec
->vma
+ queue
->sec
->size
;
5030 if (!c64_valid_cap_range (&low
, &high
))
5032 align
= __builtin_ctzl (low
);
5034 if (queue
->sec
->alignment_power
< align
)
5035 queue
->sec
->alignment_power
= align
;
5037 padding
= high
- queue
->sec
->vma
- queue
->sec
->size
;
5039 if (queue
->sec
!= pcc_high_sec
)
5041 c64_pad_section (queue
->sec
, padding
);
5046 /* If we have crossed all sections within the PCC range, set up alignment
5047 and padding for the PCC range. */
5048 if (pcc_high_sec
!= NULL
&& pcc_low_sec
!= NULL
5049 && (queue
->next
== NULL
5050 || queue
->next
->sec
->vma
> pcc_high_sec
->vma
))
5052 /* Layout sections since it affects the final range of PCC. */
5053 (*htab
->layout_sections_again
) ();
5055 bfd_vma pcc_low
= pcc_low_sec
->vma
;
5056 bfd_vma pcc_high
= pcc_high_sec
->vma
+ pcc_high_sec
->size
+ padding
;
5058 if (!c64_valid_cap_range (&pcc_low
, &pcc_high
))
5060 align
= __builtin_ctzl (pcc_low
);
5061 if (pcc_low_sec
->alignment_power
< align
)
5062 pcc_low_sec
->alignment_power
= align
;
5064 padding
= pcc_high
- pcc_high_sec
->vma
- pcc_high_sec
->size
;
5065 c64_pad_section (pcc_high_sec
, padding
);
5069 (*htab
->layout_sections_again
) ();
5071 struct sec_change_queue
*queue_free
= queue
;
5073 queue
= queue
->next
;
5078 /* Determine and set the size of the stub section for a final link.
5080 The basic idea here is to examine all the relocations looking for
5081 PC-relative calls to a target that either needs a PE state change (A64 to
5082 C64 or vice versa) or in case of unconditional branches (B/BL), is
5086 elfNN_aarch64_size_stubs (bfd
*output_bfd
,
5088 struct bfd_link_info
*info
,
5089 bfd_signed_vma group_size
,
5090 asection
* (*add_stub_section
) (const char *,
5092 void (*layout_sections_again
) (void))
5094 bfd_size_type stub_group_size
;
5095 bfd_boolean stubs_always_before_branch
;
5096 bfd_boolean stub_changed
= FALSE
;
5097 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
5098 unsigned int num_erratum_835769_fixes
= 0;
5100 /* Propagate mach to stub bfd, because it may not have been
5101 finalized when we created stub_bfd. */
5102 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
5103 bfd_get_mach (output_bfd
));
5105 /* Stash our params away. */
5106 htab
->stub_bfd
= stub_bfd
;
5107 htab
->add_stub_section
= add_stub_section
;
5108 htab
->layout_sections_again
= layout_sections_again
;
5109 stubs_always_before_branch
= group_size
< 0;
5111 stub_group_size
= -group_size
;
5113 stub_group_size
= group_size
;
5115 if (stub_group_size
== 1)
5117 /* Default values. */
5118 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
5119 stub_group_size
= 127 * 1024 * 1024;
5122 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
5124 (*htab
->layout_sections_again
) ();
5126 if (htab
->fix_erratum_835769
)
5130 for (input_bfd
= info
->input_bfds
;
5131 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
5133 if (!is_aarch64_elf (input_bfd
)
5134 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
5137 if (!_bfd_aarch64_erratum_835769_scan (input_bfd
, info
,
5138 &num_erratum_835769_fixes
))
5142 _bfd_aarch64_resize_stubs (htab
);
5143 (*htab
->layout_sections_again
) ();
5146 if (htab
->fix_erratum_843419
!= ERRAT_NONE
)
5150 for (input_bfd
= info
->input_bfds
;
5152 input_bfd
= input_bfd
->link
.next
)
5156 if (!is_aarch64_elf (input_bfd
)
5157 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
5160 for (section
= input_bfd
->sections
;
5162 section
= section
->next
)
5163 if (!_bfd_aarch64_erratum_843419_scan (input_bfd
, section
, info
))
5167 _bfd_aarch64_resize_stubs (htab
);
5168 (*htab
->layout_sections_again
) ();
5175 for (input_bfd
= info
->input_bfds
;
5176 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
5178 Elf_Internal_Shdr
*symtab_hdr
;
5181 if (!is_aarch64_elf (input_bfd
)
5182 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
5185 /* We'll need the symbol table in a second. */
5186 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
5187 if (symtab_hdr
->sh_info
== 0)
5190 /* Walk over each section attached to the input bfd. */
5191 for (section
= input_bfd
->sections
;
5192 section
!= NULL
; section
= section
->next
)
5194 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
5196 /* If there aren't any relocs, then there's nothing more
5198 if ((section
->flags
& SEC_RELOC
) == 0
5199 || section
->reloc_count
== 0
5200 || (section
->flags
& SEC_CODE
) == 0)
5203 /* If this section is a link-once section that will be
5204 discarded, then don't create any stubs. */
5205 if (section
->output_section
== NULL
5206 || section
->output_section
->owner
!= output_bfd
)
5209 /* Get the relocs. */
5211 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
5212 NULL
, info
->keep_memory
);
5213 if (internal_relocs
== NULL
)
5214 goto error_ret_free_local
;
5216 /* Now examine each relocation. */
5217 irela
= internal_relocs
;
5218 irelaend
= irela
+ section
->reloc_count
;
5219 for (; irela
< irelaend
; irela
++)
5221 unsigned int r_type
, r_indx
;
5222 enum elf_aarch64_stub_type stub_type
= aarch64_stub_none
;
5223 struct elf_aarch64_stub_hash_entry
*stub_entry
;
5226 bfd_vma destination
;
5227 struct elf_aarch64_link_hash_entry
*hash
;
5228 const char *sym_name
;
5230 const asection
*id_sec
;
5231 unsigned char st_type
;
5233 unsigned branch_to_c64
= FALSE
;
5236 r_type
= ELFNN_R_TYPE (irela
->r_info
);
5237 r_indx
= ELFNN_R_SYM (irela
->r_info
);
5239 if (r_type
>= (unsigned int) R_AARCH64_end
)
5241 bfd_set_error (bfd_error_bad_value
);
5242 error_ret_free_internal
:
5243 if (elf_section_data (section
)->relocs
== NULL
)
5244 free (internal_relocs
);
5245 goto error_ret_free_local
;
5248 /* Only look for stubs on unconditional branch and
5249 branch and link instructions. */
5250 if (!aarch64_branch_reloc_p (r_type
))
5253 /* Now determine the call target, its name, value,
5260 if (r_indx
< symtab_hdr
->sh_info
)
5262 /* It's a local symbol. */
5263 Elf_Internal_Sym
*sym
=
5264 bfd_sym_from_r_symndx (&htab
->root
.sym_cache
,
5267 goto error_ret_free_internal
;
5269 branch_to_c64
|= (sym
->st_target_internal
5270 & ST_BRANCH_TO_C64
);
5272 Elf_Internal_Shdr
*hdr
=
5273 elf_elfsections (input_bfd
)[sym
->st_shndx
];
5275 sym_sec
= hdr
->bfd_section
;
5277 /* This is an undefined symbol. It can never
5281 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
5282 sym_value
= sym
->st_value
;
5283 destination
= (sym_value
+ irela
->r_addend
5284 + sym_sec
->output_offset
5285 + sym_sec
->output_section
->vma
);
5286 st_type
= ELF_ST_TYPE (sym
->st_info
);
5288 = bfd_elf_string_from_elf_section (input_bfd
,
5289 symtab_hdr
->sh_link
,
5292 /* Get the interworking stub if needed. */
5293 stub_type
= aarch64_interwork_stub (r_type
,
5299 struct elf_aarch64_link_hash_table
*globals
=
5300 elf_aarch64_hash_table (info
);
5302 e_indx
= r_indx
- symtab_hdr
->sh_info
;
5303 hash
= ((struct elf_aarch64_link_hash_entry
*)
5304 elf_sym_hashes (input_bfd
)[e_indx
]);
5306 while (hash
->root
.root
.type
== bfd_link_hash_indirect
5307 || hash
->root
.root
.type
== bfd_link_hash_warning
)
5308 hash
= ((struct elf_aarch64_link_hash_entry
*)
5309 hash
->root
.root
.u
.i
.link
);
5311 /* Static executable. */
5312 if (globals
->root
.splt
== NULL
|| hash
== NULL
5313 || hash
->root
.plt
.offset
== (bfd_vma
) - 1)
5315 branch_to_c64
|= (hash
->root
.target_internal
5316 & ST_BRANCH_TO_C64
);
5317 stub_type
= aarch64_interwork_stub (r_type
,
5321 if (hash
->root
.root
.type
== bfd_link_hash_defined
5322 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
5324 sym_sec
= hash
->root
.root
.u
.def
.section
;
5325 sym_value
= hash
->root
.root
.u
.def
.value
;
5326 /* For a destination in a shared library,
5327 use the PLT stub as target address to
5328 decide whether a branch stub is
5330 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
5331 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
5333 sym_sec
= globals
->root
.splt
;
5334 sym_value
= hash
->root
.plt
.offset
;
5335 if (sym_sec
->output_section
!= NULL
)
5336 destination
= (sym_value
5337 + sym_sec
->output_offset
5339 sym_sec
->output_section
->vma
);
5341 else if (sym_sec
->output_section
!= NULL
)
5342 destination
= (sym_value
+ irela
->r_addend
5343 + sym_sec
->output_offset
5344 + sym_sec
->output_section
->vma
);
5346 else if (hash
->root
.root
.type
== bfd_link_hash_undefined
5347 || (hash
->root
.root
.type
5348 == bfd_link_hash_undefweak
))
5350 /* For a shared library, use the PLT stub as
5351 target address to decide whether a long
5352 branch stub is needed.
5353 For absolute code, they cannot be handled. */
5355 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
5356 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
5358 sym_sec
= globals
->root
.splt
;
5359 sym_value
= hash
->root
.plt
.offset
;
5360 if (sym_sec
->output_section
!= NULL
)
5361 destination
= (sym_value
5362 + sym_sec
->output_offset
5364 sym_sec
->output_section
->vma
);
5371 bfd_set_error (bfd_error_bad_value
);
5372 goto error_ret_free_internal
;
5374 st_type
= ELF_ST_TYPE (hash
->root
.type
);
5375 sym_name
= hash
->root
.root
.root
.string
;
5378 /* Determine what (if any) linker stub is needed. */
5379 if (stub_type
== aarch64_stub_none
)
5380 stub_type
= aarch64_type_of_stub (section
, irela
, sym_sec
,
5381 st_type
, destination
);
5383 if (stub_type
== aarch64_stub_none
)
5386 /* Support for grouping stub sections. */
5387 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
5389 /* Get the name of this stub. */
5390 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, hash
,
5393 goto error_ret_free_internal
;
5396 aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
5397 stub_name
, FALSE
, FALSE
);
5398 if (stub_entry
!= NULL
)
5400 /* The proper stub has already been created. */
5402 /* Always update this stub's target since it may have
5403 changed after layout. */
5404 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
5406 /* Set LSB for A64 to C64 branch. */
5408 stub_entry
->target_value
|= 1;
5413 stub_entry
= _bfd_aarch64_add_stub_entry_in_group
5414 (stub_name
, section
, htab
);
5415 if (stub_entry
== NULL
)
5418 goto error_ret_free_internal
;
5421 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
5422 /* Set LSB for A64 to C64 branch. */
5424 stub_entry
->target_value
|= 1;
5426 stub_entry
->target_section
= sym_sec
;
5427 stub_entry
->stub_type
= stub_type
;
5428 stub_entry
->h
= hash
;
5429 stub_entry
->st_type
= st_type
;
5431 suffix
= aarch64_lookup_stub_type_suffix (stub_type
);
5433 if (sym_name
== NULL
)
5434 sym_name
= "unnamed";
5435 len
= (sizeof (STUB_ENTRY_NAME
) + strlen (sym_name
)
5437 stub_entry
->output_name
= bfd_alloc (htab
->stub_bfd
, len
);
5438 if (stub_entry
->output_name
== NULL
)
5441 goto error_ret_free_internal
;
5444 snprintf (stub_entry
->output_name
, len
, STUB_ENTRY_NAME
,
5447 stub_changed
= TRUE
;
5450 /* We're done with the internal relocs, free them. */
5451 if (elf_section_data (section
)->relocs
== NULL
)
5452 free (internal_relocs
);
5459 _bfd_aarch64_resize_stubs (htab
);
5461 /* Ask the linker to do its stuff. */
5462 (*htab
->layout_sections_again
) ();
5463 stub_changed
= FALSE
;
5468 error_ret_free_local
:
5472 /* Build all the stubs associated with the current output file. The
5473 stubs are kept in a hash table attached to the main linker hash
5474 table. We also set up the .plt entries for statically linked PIC
5475 functions here. This function is called via aarch64_elf_finish in the
5479 elfNN_aarch64_build_stubs (struct bfd_link_info
*info
)
5482 struct bfd_hash_table
*table
;
5483 struct elf_aarch64_link_hash_table
*htab
;
5485 htab
= elf_aarch64_hash_table (info
);
5487 for (stub_sec
= htab
->stub_bfd
->sections
;
5488 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
5492 /* Ignore non-stub sections. */
5493 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
5496 /* Allocate memory to hold the linker stubs. */
5497 size
= stub_sec
->size
;
5498 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
5499 if (stub_sec
->contents
== NULL
&& size
!= 0)
5503 /* Add a branch around the stub section, and a nop, to keep it 8 byte
5504 aligned, as long branch stubs contain a 64-bit address. */
5505 bfd_putl32 (0x14000000 | (size
>> 2), stub_sec
->contents
);
5506 bfd_putl32 (INSN_NOP
, stub_sec
->contents
+ 4);
5507 stub_sec
->size
+= 8;
5510 /* Build the stubs as directed by the stub hash table. */
5511 table
= &htab
->stub_hash_table
;
5513 bfd_error_type save_error
= bfd_get_error ();
5514 bfd_set_error (bfd_error_no_error
);
5515 bfd_hash_traverse (table
, aarch64_build_one_stub
, info
);
5517 if (bfd_get_error () != bfd_error_no_error
)
5520 bfd_set_error (save_error
);
5526 /* Add an entry to the code/data map for section SEC. */
5529 elfNN_aarch64_section_map_add (bfd
*abfd
, asection
*sec
, char type
,
5532 struct _aarch64_elf_section_data
*sec_data
=
5533 elf_aarch64_section_data (sec
);
5534 unsigned int newidx
;
5536 /* The aarch64 section hook was not called for this section. */
5537 if (!sec_data
->elf
.is_target_section_data
)
5539 struct _aarch64_elf_section_data
*newdata
=
5540 bfd_zalloc (abfd
, sizeof (*newdata
));
5542 if (newdata
== NULL
)
5545 newdata
->elf
= sec_data
->elf
;
5546 newdata
->elf
.is_target_section_data
= TRUE
;
5548 sec
->used_by_bfd
= sec_data
= newdata
;
5551 if (sec_data
->map
== NULL
)
5553 sec_data
->map
= bfd_malloc (sizeof (elf_aarch64_section_map
));
5554 sec_data
->mapcount
= 0;
5555 sec_data
->mapsize
= 1;
5558 newidx
= sec_data
->mapcount
++;
5560 if (sec_data
->mapcount
> sec_data
->mapsize
)
5562 sec_data
->mapsize
*= 2;
5563 sec_data
->map
= bfd_realloc_or_free
5564 (sec_data
->map
, sec_data
->mapsize
* sizeof (elf_aarch64_section_map
));
5569 sec_data
->map
[newidx
].vma
= vma
;
5570 sec_data
->map
[newidx
].type
= type
;
5575 /* Initialise maps of insn/data for input BFDs. */
5577 bfd_elfNN_aarch64_init_maps (bfd
*abfd
, struct bfd_link_info
*info
)
5579 Elf_Internal_Sym
*isymbuf
;
5580 Elf_Internal_Shdr
*hdr
;
5581 unsigned int i
, localsyms
;
5583 /* Make sure that we are dealing with an AArch64 elf binary. */
5584 if (!is_aarch64_elf (abfd
))
5587 if (elf_aarch64_tdata (abfd
)->secmaps_initialised
)
5590 if ((abfd
->flags
& DYNAMIC
) != 0)
5593 hdr
= &elf_symtab_hdr (abfd
);
5594 localsyms
= hdr
->sh_info
;
5596 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
5597 should contain the number of local symbols, which should come before any
5598 global symbols. Mapping symbols are always local. */
5599 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
, NULL
);
5601 /* No internal symbols read? Skip this BFD. */
5602 if (isymbuf
== NULL
)
5605 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table ((info
));
5607 for (i
= 0; i
< localsyms
; i
++)
5609 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
5610 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5613 if (sec
!= NULL
&& ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
5615 name
= bfd_elf_string_from_elf_section (abfd
,
5619 if (bfd_is_aarch64_special_symbol_name
5620 (name
, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP
))
5622 elfNN_aarch64_section_map_add (abfd
, sec
, name
[1],
5624 if (!htab
->c64_output
&& name
[1] == 'c')
5625 htab
->c64_output
= TRUE
;
5629 elf_aarch64_tdata (abfd
)->secmaps_initialised
= TRUE
;
5633 setup_plt_values (struct bfd_link_info
*link_info
,
5634 aarch64_plt_type plt_type
)
5636 struct elf_aarch64_link_hash_table
*globals
;
5637 globals
= elf_aarch64_hash_table (link_info
);
5639 /* Set up plt stubs in case we need C64 PLT. Override BTI/PAC since they're
5640 not compatible. PLT stub sizes are the same as the default ones. */
5641 if (globals
->c64_rel
)
5643 if (plt_type
!= PLT_NORMAL
)
5645 (_("ignoring C64-incompatible extensions: %s"),
5646 (plt_type
== PLT_BTI_PAC
? "BTI, PAC"
5647 : plt_type
== PLT_BTI
? "BTI" : "PAC"));
5649 globals
->plt0_entry
= elfNN_c64_small_plt0_entry
;
5650 globals
->plt_entry
= elfNN_c64_small_plt_entry
;
5654 if (plt_type
== PLT_BTI_PAC
)
5656 globals
->plt0_entry
= elfNN_aarch64_small_plt0_bti_entry
;
5658 /* Only in ET_EXEC we need PLTn with BTI. */
5659 if (bfd_link_pde (link_info
))
5661 globals
->plt_entry_size
= PLT_BTI_PAC_SMALL_ENTRY_SIZE
;
5662 globals
->plt_entry
= elfNN_aarch64_small_plt_bti_pac_entry
;
5666 globals
->plt_entry_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
5667 globals
->plt_entry
= elfNN_aarch64_small_plt_pac_entry
;
5670 else if (plt_type
== PLT_BTI
)
5672 globals
->plt0_entry
= elfNN_aarch64_small_plt0_bti_entry
;
5674 /* Only in ET_EXEC we need PLTn with BTI. */
5675 if (bfd_link_pde (link_info
))
5677 globals
->plt_entry_size
= PLT_BTI_SMALL_ENTRY_SIZE
;
5678 globals
->plt_entry
= elfNN_aarch64_small_plt_bti_entry
;
5681 else if (plt_type
== PLT_PAC
)
5683 globals
->plt_entry_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
5684 globals
->plt_entry
= elfNN_aarch64_small_plt_pac_entry
;
5688 /* Set option values needed during linking. */
5690 bfd_elfNN_aarch64_set_options (struct bfd
*output_bfd
,
5691 struct bfd_link_info
*link_info
,
5693 int no_wchar_warn
, int pic_veneer
,
5694 int fix_erratum_835769
,
5695 erratum_84319_opts fix_erratum_843419
,
5696 int no_apply_dynamic_relocs
,
5697 aarch64_bti_pac_info bp_info
)
5699 struct elf_aarch64_link_hash_table
*globals
;
5701 globals
= elf_aarch64_hash_table (link_info
);
5702 globals
->pic_veneer
= pic_veneer
;
5703 globals
->fix_erratum_835769
= fix_erratum_835769
;
5704 /* If the default options are used, then ERRAT_ADR will be set by default
5705 which will enable the ADRP->ADR workaround for the erratum 843419
5707 globals
->fix_erratum_843419
= fix_erratum_843419
;
5708 globals
->no_apply_dynamic_relocs
= no_apply_dynamic_relocs
;
5709 globals
->c64_rel
= 0;
5711 BFD_ASSERT (is_aarch64_elf (output_bfd
));
5712 elf_aarch64_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
5713 elf_aarch64_tdata (output_bfd
)->no_wchar_size_warning
= no_wchar_warn
;
5715 switch (bp_info
.bti_type
)
5718 elf_aarch64_tdata (output_bfd
)->no_bti_warn
= 0;
5719 elf_aarch64_tdata (output_bfd
)->gnu_and_prop
5720 |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI
;
5726 elf_aarch64_tdata (output_bfd
)->plt_type
= bp_info
.plt_type
;
5727 elf_aarch64_tdata (output_bfd
)->secmaps_initialised
= FALSE
;
5731 aarch64_calculate_got_entry_vma (struct elf_link_hash_entry
*h
,
5732 struct elf_aarch64_link_hash_table
5733 *globals
, struct bfd_link_info
*info
,
5734 bfd_vma value
, bfd
*output_bfd
,
5735 bfd_boolean
*unresolved_reloc_p
)
5737 bfd_vma off
= (bfd_vma
) - 1;
5738 asection
*basegot
= globals
->root
.sgot
;
5739 bfd_boolean dyn
= globals
->root
.dynamic_sections_created
;
5743 BFD_ASSERT (basegot
!= NULL
);
5744 off
= h
->got
.offset
;
5745 BFD_ASSERT (off
!= (bfd_vma
) - 1);
5746 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
5747 || (bfd_link_pic (info
)
5748 && SYMBOL_REFERENCES_LOCAL (info
, h
))
5749 || (ELF_ST_VISIBILITY (h
->other
)
5750 && h
->root
.type
== bfd_link_hash_undefweak
))
5752 /* This is actually a static link, or it is a -Bsymbolic link
5753 and the symbol is defined locally. We must initialize this
5754 entry in the global offset table. Since the offset must
5755 always be a multiple of 8 (4 in the case of ILP32), we use
5756 the least significant bit to record whether we have
5757 initialized it already.
5758 When doing a dynamic link, we create a .rel(a).got relocation
5759 entry to initialize the value. This is done in the
5760 finish_dynamic_symbol routine. */
5765 bfd_put_NN (output_bfd
, value
, basegot
->contents
+ off
);
5770 *unresolved_reloc_p
= FALSE
;
5772 off
= off
+ basegot
->output_section
->vma
+ basegot
->output_offset
;
5778 /* Change R_TYPE to a more efficient access model where possible,
5779 return the new reloc type. */
5781 static bfd_reloc_code_real_type
5782 aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type
,
5783 struct bfd_link_info
*info
,
5784 struct elf_link_hash_entry
*h
,
5785 bfd_boolean morello_reloc
)
5787 bfd_boolean is_local
= h
== NULL
;
5791 case BFD_RELOC_MORELLO_TLSDESC_ADR_PAGE20
:
5792 return (is_local
|| !bfd_link_pic (info
)
5793 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
5796 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
5797 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
5799 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
5800 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
);
5802 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
5804 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
5807 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
5809 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
5810 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
5812 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5814 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
5815 : BFD_RELOC_AARCH64_NONE
);
5817 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
5819 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
5820 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
);
5822 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
5824 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
5825 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
);
5827 case BFD_RELOC_MORELLO_TLSDESC_LD128_LO12
:
5828 return ((is_local
|| !bfd_link_pie (info
)
5829 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
: r_type
));
5831 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
5832 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
5834 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
5835 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
);
5837 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
5838 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
: r_type
;
5840 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
5841 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
: r_type
;
5843 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
5846 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
5848 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
5849 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
5851 case BFD_RELOC_MORELLO_TLSDESC_CALL
:
5852 return ((is_local
|| !bfd_link_pie (info
))
5853 ? BFD_RELOC_AARCH64_NONE
: r_type
);
5855 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
5856 if (morello_reloc
&& !is_local
&& bfd_link_pie (info
))
5859 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5860 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5861 /* Instructions with these relocations will be fully resolved during the
5862 transition into either a NOP in the A64 case or movk and add in
5864 return BFD_RELOC_AARCH64_NONE
;
5866 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
5867 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
5868 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5869 return is_local
? BFD_RELOC_AARCH64_NONE
: r_type
;
5872 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
5874 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
5875 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
;
5877 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
5879 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
5880 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
;
5891 aarch64_reloc_got_type (bfd_reloc_code_real_type r_type
)
5895 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5896 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5897 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5898 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5899 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5900 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5901 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5902 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5903 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5906 case BFD_RELOC_MORELLO_ADR_GOT_PAGE
:
5907 case BFD_RELOC_MORELLO_LD128_GOT_LO12_NC
:
5910 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
5911 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
5912 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
5913 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
5914 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
5915 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
5916 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
5917 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5920 case BFD_RELOC_MORELLO_TLSDESC_ADR_PAGE20
:
5921 case BFD_RELOC_MORELLO_TLSDESC_CALL
:
5922 case BFD_RELOC_MORELLO_TLSDESC_LD128_LO12
:
5923 return GOT_TLSDESC_GD
| GOT_CAP
;
5925 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5926 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
5927 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
5928 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
5929 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5930 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
5931 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
5932 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
5933 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5934 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
5935 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
5936 return GOT_TLSDESC_GD
;
5938 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
5939 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
5940 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
5941 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
5942 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
5943 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
5953 aarch64_can_relax_tls (bfd
*input_bfd
,
5954 struct bfd_link_info
*info
,
5955 const Elf_Internal_Rela
*rel
,
5956 struct elf_link_hash_entry
*h
,
5957 unsigned long r_symndx
)
5959 unsigned int symbol_got_type
;
5960 unsigned int reloc_got_type
;
5962 bfd_reloc_code_real_type bfd_r_type
5963 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
,
5964 ELFNN_R_TYPE (rel
->r_info
));
5966 if (! IS_AARCH64_TLS_RELAX_RELOC (bfd_r_type
))
5969 symbol_got_type
= elfNN_aarch64_symbol_got_type (h
, input_bfd
, r_symndx
);
5970 reloc_got_type
= aarch64_reloc_got_type (bfd_r_type
);
5972 if (symbol_got_type
== GOT_TLS_IE
&& GOT_TLS_GD_ANY_P (reloc_got_type
))
5975 if (!bfd_link_executable (info
))
5978 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
5984 /* Given the relocation code R_TYPE, return the relaxed bfd reloc
5987 static bfd_reloc_code_real_type
5988 aarch64_tls_transition (bfd
*input_bfd
,
5989 struct bfd_link_info
*info
,
5990 const Elf_Internal_Rela
*rel
,
5991 struct elf_link_hash_entry
*h
,
5992 unsigned long r_symndx
)
5994 bfd_reloc_code_real_type bfd_r_type
5995 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
,
5996 ELFNN_R_TYPE (rel
->r_info
));
5998 if (! aarch64_can_relax_tls (input_bfd
, info
, rel
, h
, r_symndx
))
6001 bfd_boolean morello_reloc
= (bfd_r_type
== BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
6002 && (ELFNN_R_TYPE (rel
[1].r_info
)
6003 == MORELLO_R (TLSDESC_CALL
)));
6005 /* GD -> IE is not supported for Morello TLSDESC yet. We do however allow
6006 lowering of GD -> LE for static non-pie executables. XXX It ought to be
6007 safe to do this for A64 as well but it is not implemented yet. */
6008 if (h
!= NULL
&& morello_reloc
&& bfd_link_pie (info
))
6011 return aarch64_tls_transition_without_check (bfd_r_type
, info
, h
,
6015 /* Return the base VMA address which should be subtracted from real addresses
6016 when resolving R_AARCH64_TLS_DTPREL relocation. */
6019 dtpoff_base (struct bfd_link_info
*info
)
6021 /* If tls_sec is NULL, we should have signalled an error already. */
6022 BFD_ASSERT (elf_hash_table (info
)->tls_sec
!= NULL
);
6023 return elf_hash_table (info
)->tls_sec
->vma
;
6026 /* Return the base VMA address which should be subtracted from real addresses
6027 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
6030 tpoff_base (struct bfd_link_info
*info
)
6032 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
6034 /* If tls_sec is NULL, we should have signalled an error already. */
6035 BFD_ASSERT (htab
->tls_sec
!= NULL
);
6037 bfd_vma base
= align_power ((bfd_vma
) TCB_SIZE
,
6038 htab
->tls_sec
->alignment_power
);
6039 return htab
->tls_sec
->vma
- base
;
6043 symbol_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
6044 unsigned long r_symndx
)
6046 /* Calculate the address of the GOT entry for symbol
6047 referred to in h. */
6049 return &h
->got
.offset
;
6053 struct elf_aarch64_local_symbol
*l
;
6055 l
= elf_aarch64_locals (input_bfd
);
6056 return &l
[r_symndx
].got_offset
;
6061 symbol_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
6062 unsigned long r_symndx
)
6065 p
= symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
6070 symbol_got_offset_mark_p (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
6071 unsigned long r_symndx
)
6074 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
6079 symbol_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
6080 unsigned long r_symndx
)
6083 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
6089 symbol_tlsdesc_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
6090 unsigned long r_symndx
)
6092 /* Calculate the address of the GOT entry for symbol
6093 referred to in h. */
6096 struct elf_aarch64_link_hash_entry
*eh
;
6097 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
6098 return &eh
->tlsdesc_got_jump_table_offset
;
6103 struct elf_aarch64_local_symbol
*l
;
6105 l
= elf_aarch64_locals (input_bfd
);
6106 return &l
[r_symndx
].tlsdesc_got_jump_table_offset
;
6111 symbol_tlsdesc_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
6112 unsigned long r_symndx
)
6115 p
= symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
6120 symbol_tlsdesc_got_offset_mark_p (bfd
*input_bfd
,
6121 struct elf_link_hash_entry
*h
,
6122 unsigned long r_symndx
)
6125 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
6130 symbol_tlsdesc_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
6131 unsigned long r_symndx
)
6134 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
6139 /* Data for make_branch_to_erratum_835769_stub(). */
6141 struct erratum_835769_branch_to_stub_data
6143 struct bfd_link_info
*info
;
6144 asection
*output_section
;
6148 /* Helper to insert branches to erratum 835769 stubs in the right
6149 places for a particular section. */
6152 make_branch_to_erratum_835769_stub (struct bfd_hash_entry
*gen_entry
,
6155 struct elf_aarch64_stub_hash_entry
*stub_entry
;
6156 struct erratum_835769_branch_to_stub_data
*data
;
6158 unsigned long branch_insn
= 0;
6159 bfd_vma veneered_insn_loc
, veneer_entry_loc
;
6160 bfd_signed_vma branch_offset
;
6161 unsigned int target
;
6164 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
6165 data
= (struct erratum_835769_branch_to_stub_data
*) in_arg
;
6167 if (stub_entry
->target_section
!= data
->output_section
6168 || stub_entry
->stub_type
!= aarch64_stub_erratum_835769_veneer
)
6171 contents
= data
->contents
;
6172 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
6173 + stub_entry
->target_section
->output_offset
6174 + stub_entry
->target_value
;
6175 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
6176 + stub_entry
->stub_sec
->output_offset
6177 + stub_entry
->stub_offset
;
6178 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
6180 abfd
= stub_entry
->target_section
->owner
;
6181 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
6183 (_("%pB: error: erratum 835769 stub out "
6184 "of range (input file too large)"), abfd
);
6186 target
= stub_entry
->target_value
;
6187 branch_insn
= 0x14000000;
6188 branch_offset
>>= 2;
6189 branch_offset
&= 0x3ffffff;
6190 branch_insn
|= branch_offset
;
6191 bfd_putl32 (branch_insn
, &contents
[target
]);
6198 _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry
*gen_entry
,
6201 struct elf_aarch64_stub_hash_entry
*stub_entry
6202 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
6203 struct erratum_835769_branch_to_stub_data
*data
6204 = (struct erratum_835769_branch_to_stub_data
*) in_arg
;
6205 struct bfd_link_info
*info
;
6206 struct elf_aarch64_link_hash_table
*htab
;
6214 contents
= data
->contents
;
6215 section
= data
->output_section
;
6217 htab
= elf_aarch64_hash_table (info
);
6219 if (stub_entry
->target_section
!= section
6220 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
)
6223 BFD_ASSERT (((htab
->fix_erratum_843419
& ERRAT_ADRP
) && stub_entry
->stub_sec
)
6224 || (htab
->fix_erratum_843419
& ERRAT_ADR
));
6226 /* Only update the stub section if we have one. We should always have one if
6227 we're allowed to use the ADRP errata workaround, otherwise it is not
6229 if (stub_entry
->stub_sec
)
6231 insn
= bfd_getl32 (contents
+ stub_entry
->target_value
);
6233 stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
);
6236 place
= (section
->output_section
->vma
+ section
->output_offset
6237 + stub_entry
->adrp_offset
);
6238 insn
= bfd_getl32 (contents
+ stub_entry
->adrp_offset
);
6240 if (!_bfd_aarch64_adrp_p (insn
))
6243 bfd_signed_vma imm
=
6244 (_bfd_aarch64_sign_extend
6245 ((bfd_vma
) _bfd_aarch64_decode_adrp_imm (insn
) << 12, 33)
6248 if ((htab
->fix_erratum_843419
& ERRAT_ADR
)
6249 && (imm
>= AARCH64_MIN_ADRP_IMM
&& imm
<= AARCH64_MAX_ADRP_IMM
))
6251 insn
= (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP
, imm
, 0)
6252 | AARCH64_RT (insn
));
6253 bfd_putl32 (insn
, contents
+ stub_entry
->adrp_offset
);
6254 /* Stub is not needed, don't map it out. */
6255 stub_entry
->stub_type
= aarch64_stub_none
;
6257 else if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
6259 bfd_vma veneered_insn_loc
;
6260 bfd_vma veneer_entry_loc
;
6261 bfd_signed_vma branch_offset
;
6262 uint32_t branch_insn
;
6264 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
6265 + stub_entry
->target_section
->output_offset
6266 + stub_entry
->target_value
;
6267 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
6268 + stub_entry
->stub_sec
->output_offset
6269 + stub_entry
->stub_offset
;
6270 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
6272 abfd
= stub_entry
->target_section
->owner
;
6273 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
6275 (_("%pB: error: erratum 843419 stub out "
6276 "of range (input file too large)"), abfd
);
6278 branch_insn
= 0x14000000;
6279 branch_offset
>>= 2;
6280 branch_offset
&= 0x3ffffff;
6281 branch_insn
|= branch_offset
;
6282 bfd_putl32 (branch_insn
, contents
+ stub_entry
->target_value
);
6286 abfd
= stub_entry
->target_section
->owner
;
6288 (_("%pB: error: erratum 843419 immediate 0x%" BFD_VMA_FMT
"x "
6289 "out of range for ADR (input file too large) and "
6290 "--fix-cortex-a53-843419=adr used. Run the linker with "
6291 "--fix-cortex-a53-843419=full instead"), abfd
, imm
);
6292 bfd_set_error (bfd_error_bad_value
);
6293 /* This function is called inside a hashtable traversal and the error
6294 handlers called above turn into non-fatal errors. Which means this
6295 case ld returns an exit code 0 and also produces a broken object file.
6296 To prevent this, issue a hard abort. */
6304 elfNN_aarch64_write_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
6305 struct bfd_link_info
*link_info
,
6310 struct elf_aarch64_link_hash_table
*globals
=
6311 elf_aarch64_hash_table (link_info
);
6313 if (globals
== NULL
)
6316 /* Fix code to point to erratum 835769 stubs. */
6317 if (globals
->fix_erratum_835769
)
6319 struct erratum_835769_branch_to_stub_data data
;
6321 data
.info
= link_info
;
6322 data
.output_section
= sec
;
6323 data
.contents
= contents
;
6324 bfd_hash_traverse (&globals
->stub_hash_table
,
6325 make_branch_to_erratum_835769_stub
, &data
);
6328 if (globals
->fix_erratum_843419
)
6330 struct erratum_835769_branch_to_stub_data data
;
6332 data
.info
= link_info
;
6333 data
.output_section
= sec
;
6334 data
.contents
= contents
;
6335 bfd_hash_traverse (&globals
->stub_hash_table
,
6336 _bfd_aarch64_erratum_843419_branch_to_stub
, &data
);
6342 /* Return TRUE if RELOC is a relocation against the base of GOT table. */
6345 aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc
)
6347 return (reloc
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
6348 || reloc
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
6349 || reloc
== BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
6350 || reloc
== BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
6351 || reloc
== BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
);
6354 /* Build capability meta data, i.e. size and permissions for a capability. */
6357 cap_meta (size_t size
, const asection
*sec
)
6360 if (size
>= (1ULL << 56))
6361 return (bfd_vma
) -1;
6364 if (sec
->flags
& SEC_READONLY
6365 || sec
->flags
& SEC_ROM
)
6367 if (sec
->flags
& SEC_CODE
)
6369 if (sec
->flags
& SEC_ALLOC
)
6372 /* We should always be able to derive a valid set of permissions
6373 from the section flags. */
6377 static bfd_reloc_status_type
6378 c64_fixup_frag (bfd
*input_bfd
, struct bfd_link_info
*info
,
6379 bfd_reloc_code_real_type bfd_r_type
, Elf_Internal_Sym
*sym
,
6380 struct elf_link_hash_entry
*h
, asection
*sym_sec
,
6381 bfd_byte
*frag_loc
, bfd_vma value
, bfd_signed_vma addend
)
6384 asection
*perm_sec
= sym_sec
;
6385 bfd_boolean bounds_ok
= FALSE
;
6389 size
= sym
->st_size
;
6397 if (size
== 0 && sym_sec
!= NULL
)
6399 /* Linker defined symbols are always at the start of the section they
6401 if (h
->root
.linker_def
)
6403 size
= sym_sec
->output_section
->size
;
6406 else if (h
->root
.ldscript_def
)
6408 const char *name
= h
->root
.root
.string
;
6409 size_t len
= strlen (name
);
6411 /* In the general case, the symbol should be able to access the
6412 entire output section following it. */
6413 size
= sym_sec
->size
- (value
- sym_sec
->vma
);
6415 /* The special case: the symbol is at the end of the section.
6416 This could either mean that it is an end symbol or it is the
6417 start of the output section following the symbol. We try to
6418 guess if it is a start of the next section by reading its
6419 name. This is a compatibility hack, ideally linker scripts
6420 should be written such that start symbols are defined within
6421 the output section it intends to track. */
6423 && (len
> 8 && name
[0] == '_' && name
[1] == '_'
6424 && (!strncmp (name
+ 2, "start_", 6)
6425 || !strcmp (name
+ len
- 6, "_start"))))
6427 asection
*s
= bfd_sections_find_if (info
->output_bfd
,
6428 section_start_symbol
,
6438 else if (size
== 0 && bfd_link_pic (info
)
6439 && SYMBOL_REFERENCES_LOCAL (info
, h
))
6444 /* Negative addends are not allowed for capability symbols. */
6445 if (addend
< 0 || (bfd_vma
) addend
> size
)
6446 return bfd_reloc_outofrange
;
6448 bfd_vma base
= value
+ addend
, limit
= value
+ addend
+ size
;
6450 if (!bounds_ok
&& !c64_valid_cap_range (&base
, &limit
))
6452 /* xgettext:c-format */
6453 _bfd_error_handler (_("%pB: capability range may exceed object bounds"),
6455 bfd_set_error (bfd_error_bad_value
);
6456 return bfd_reloc_notsupported
;
6459 if (perm_sec
!= NULL
)
6461 bfd_vma frag
= cap_meta (size
, perm_sec
);
6463 if (frag
== (bfd_vma
) -1)
6464 return bfd_reloc_outofrange
;
6466 bfd_put_64 (input_bfd
, frag
, frag_loc
);
6469 return bfd_reloc_continue
;
6473 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6475 /* xgettext:c-format */
6476 (_("%pB: relocation %s against local symbol without size info"),
6477 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
6478 bfd_set_error (bfd_error_bad_value
);
6479 return bfd_reloc_notsupported
;
6483 /* Perform a relocation as part of a final link. The input relocation type
6484 should be TLS relaxed. */
6486 static bfd_reloc_status_type
6487 elfNN_aarch64_final_link_relocate (reloc_howto_type
*howto
,
6490 asection
*input_section
,
6492 Elf_Internal_Rela
*rel
,
6494 struct bfd_link_info
*info
,
6496 struct elf_link_hash_entry
*h
,
6497 bfd_boolean
*unresolved_reloc_p
,
6498 bfd_boolean save_addend
,
6499 bfd_vma
*saved_addend
,
6500 Elf_Internal_Sym
*sym
)
6502 Elf_Internal_Shdr
*symtab_hdr
;
6503 unsigned int r_type
= howto
->type
;
6504 bfd_reloc_code_real_type bfd_r_type
6505 = elfNN_aarch64_bfd_reloc_from_howto (howto
);
6506 unsigned long r_symndx
;
6507 bfd_byte
*hit_data
= contents
+ rel
->r_offset
;
6508 bfd_vma place
, off
, got_entry_addr
= 0;
6509 bfd_signed_vma signed_addend
;
6510 struct elf_aarch64_link_hash_table
*globals
;
6511 bfd_boolean weak_undef_p
;
6512 bfd_boolean relative_reloc
;
6514 bfd_vma orig_value
= value
;
6515 bfd_boolean resolved_to_zero
;
6516 bfd_boolean abs_symbol_p
;
6517 Elf_Internal_Sym
*isym
= NULL
;
6518 bfd_boolean c64_rtype
= FALSE
;
6519 bfd_boolean to_c64
= FALSE
;
6521 globals
= elf_aarch64_hash_table (info
);
6523 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
6525 BFD_ASSERT (is_aarch64_elf (input_bfd
));
6527 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
6529 place
= input_section
->output_section
->vma
6530 + input_section
->output_offset
+ rel
->r_offset
;
6532 /* Get addend, accumulating the addend for consecutive relocs
6533 which refer to the same offset. */
6534 signed_addend
= saved_addend
? *saved_addend
: 0;
6535 signed_addend
+= rel
->r_addend
;
6537 weak_undef_p
= (h
? h
->root
.type
== bfd_link_hash_undefweak
6538 : bfd_is_und_section (sym_sec
));
6539 abs_symbol_p
= h
!= NULL
&& bfd_is_abs_symbol (&h
->root
);
6543 isym
= bfd_sym_from_r_symndx (&globals
->root
.sym_cache
, input_bfd
,
6545 BFD_ASSERT (isym
!= NULL
);
6546 to_c64
= (isym
->st_target_internal
& ST_BRANCH_TO_C64
) != 0;
6549 to_c64
= (h
->target_internal
& ST_BRANCH_TO_C64
) != 0;
6552 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
6553 it here if it is defined in a non-shared object. */
6555 && h
->type
== STT_GNU_IFUNC
6562 if ((input_section
->flags
& SEC_ALLOC
) == 0)
6564 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
6565 STT_GNU_IFUNC symbol as STT_FUNC. */
6566 if (elf_section_type (input_section
) == SHT_NOTE
)
6569 /* Dynamic relocs are not propagated for SEC_DEBUGGING
6570 sections because such sections are not SEC_ALLOC and
6571 thus ld.so will not process them. */
6572 if ((input_section
->flags
& SEC_DEBUGGING
) != 0)
6573 return bfd_reloc_ok
;
6575 if (h
->root
.root
.string
)
6576 name
= h
->root
.root
.string
;
6578 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, NULL
);
6580 /* xgettext:c-format */
6581 (_("%pB(%pA+%#" PRIx64
"): "
6582 "unresolvable %s relocation against symbol `%s'"),
6583 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
6585 bfd_set_error (bfd_error_bad_value
);
6586 return bfd_reloc_notsupported
;
6588 else if (h
->plt
.offset
== (bfd_vma
) -1)
6589 goto bad_ifunc_reloc
;
6591 /* STT_GNU_IFUNC symbol must go through PLT. */
6592 plt
= globals
->root
.splt
? globals
->root
.splt
: globals
->root
.iplt
;
6593 value
= (plt
->output_section
->vma
+ plt
->output_offset
+ h
->plt
.offset
);
6599 if (h
->root
.root
.string
)
6600 name
= h
->root
.root
.string
;
6602 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
6605 /* xgettext:c-format */
6606 (_("%pB: relocation %s against STT_GNU_IFUNC "
6607 "symbol `%s' isn't handled by %s"), input_bfd
,
6608 howto
->name
, name
, __FUNCTION__
);
6609 bfd_set_error (bfd_error_bad_value
);
6610 return bfd_reloc_notsupported
;
6612 case BFD_RELOC_AARCH64_NN
:
6613 if (rel
->r_addend
!= 0)
6615 if (h
->root
.root
.string
)
6616 name
= h
->root
.root
.string
;
6618 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
,
6621 /* xgettext:c-format */
6622 (_("%pB: relocation %s against STT_GNU_IFUNC "
6623 "symbol `%s' has non-zero addend: %" PRId64
),
6624 input_bfd
, howto
->name
, name
, (int64_t) rel
->r_addend
);
6625 bfd_set_error (bfd_error_bad_value
);
6626 return bfd_reloc_notsupported
;
6629 /* Generate dynamic relocation only when there is a
6630 non-GOT reference in a shared object. */
6631 if (bfd_link_pic (info
) && h
->non_got_ref
)
6633 Elf_Internal_Rela outrel
;
6636 /* Need a dynamic relocation to get the real function
6638 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
6642 if (outrel
.r_offset
== (bfd_vma
) -1
6643 || outrel
.r_offset
== (bfd_vma
) -2)
6646 outrel
.r_offset
+= (input_section
->output_section
->vma
6647 + input_section
->output_offset
);
6649 if (h
->dynindx
== -1
6651 || bfd_link_executable (info
))
6653 /* This symbol is resolved locally. */
6654 outrel
.r_info
= (elf_aarch64_hash_entry (h
)->got_type
6656 ? ELFNN_R_INFO (0, MORELLO_R (IRELATIVE
))
6657 : ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
)));
6658 outrel
.r_addend
= (h
->root
.u
.def
.value
6659 + h
->root
.u
.def
.section
->output_section
->vma
6660 + h
->root
.u
.def
.section
->output_offset
);
6664 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
6665 outrel
.r_addend
= 0;
6668 sreloc
= globals
->root
.irelifunc
;
6669 elf_append_rela (output_bfd
, sreloc
, &outrel
);
6671 /* If this reloc is against an external symbol, we
6672 do not want to fiddle with the addend. Otherwise,
6673 we need to include the symbol value so that it
6674 becomes an addend for the dynamic reloc. For an
6675 internal symbol, we have updated addend. */
6676 return bfd_reloc_ok
;
6679 case BFD_RELOC_MORELLO_CALL26
:
6680 case BFD_RELOC_MORELLO_JUMP26
:
6681 case BFD_RELOC_AARCH64_CALL26
:
6682 case BFD_RELOC_AARCH64_JUMP26
:
6683 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6687 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
6689 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
6690 case BFD_RELOC_MORELLO_ADR_GOT_PAGE
:
6691 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
6692 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
6693 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
6694 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
6695 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
6696 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
6697 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
6698 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
6699 case BFD_RELOC_MORELLO_LD128_GOT_LO12_NC
:
6700 base_got
= globals
->root
.sgot
;
6701 off
= h
->got
.offset
;
6703 if (base_got
== NULL
)
6706 if (off
== (bfd_vma
) -1)
6710 /* We can't use h->got.offset here to save state, or
6711 even just remember the offset, as finish_dynamic_symbol
6712 would use that as offset into .got. */
6714 if (globals
->root
.splt
!= NULL
)
6716 plt_index
= ((h
->plt
.offset
- globals
->plt_header_size
) /
6717 globals
->plt_entry_size
);
6718 off
= (plt_index
+ 3) * GOT_ENTRY_SIZE (globals
);
6719 base_got
= globals
->root
.sgotplt
;
6723 plt_index
= h
->plt
.offset
/ globals
->plt_entry_size
;
6724 off
= plt_index
* GOT_ENTRY_SIZE (globals
);
6725 base_got
= globals
->root
.igotplt
;
6728 if (h
->dynindx
== -1
6732 /* This references the local definition. We must
6733 initialize this entry in the global offset table.
6734 Since the offset must always be a multiple of 8,
6735 we use the least significant bit to record
6736 whether we have initialized it already.
6738 When doing a dynamic link, we create a .rela.got
6739 relocation entry to initialize the value. This
6740 is done in the finish_dynamic_symbol routine. */
6745 bfd_put_NN (output_bfd
, value
,
6746 base_got
->contents
+ off
);
6747 /* Note that this is harmless as -1 | 1 still is -1. */
6751 value
= (base_got
->output_section
->vma
6752 + base_got
->output_offset
+ off
);
6755 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
,
6757 unresolved_reloc_p
);
6759 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
6760 addend
= (globals
->root
.sgot
->output_section
->vma
6761 + globals
->root
.sgot
->output_offset
);
6763 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6765 addend
, weak_undef_p
);
6766 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
, howto
, value
);
6767 case BFD_RELOC_AARCH64_ADD_LO12
:
6768 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
6769 case BFD_RELOC_MORELLO_ADR_HI20_PCREL
:
6775 resolved_to_zero
= (h
!= NULL
6776 && UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
6780 case BFD_RELOC_AARCH64_NONE
:
6781 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
6782 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
6783 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
6784 case BFD_RELOC_MORELLO_TLSDESC_CALL
:
6785 *unresolved_reloc_p
= FALSE
;
6786 return bfd_reloc_ok
;
6788 case BFD_RELOC_AARCH64_NN
:
6790 /* When generating a shared object or relocatable executable, these
6791 relocations are copied into the output file to be resolved at
6793 if (((bfd_link_pic (info
)
6794 || globals
->root
.is_relocatable_executable
)
6795 && (input_section
->flags
& SEC_ALLOC
)
6797 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6798 && !resolved_to_zero
)
6799 || h
->root
.type
!= bfd_link_hash_undefweak
))
6800 /* Or we are creating an executable, we may need to keep relocations
6801 for symbols satisfied by a dynamic library if we manage to avoid
6802 copy relocs for the symbol. */
6803 || (ELIMINATE_COPY_RELOCS
6804 && !bfd_link_pic (info
)
6806 && (input_section
->flags
& SEC_ALLOC
)
6811 || h
->root
.type
== bfd_link_hash_undefweak
6812 || h
->root
.type
== bfd_link_hash_undefined
)))
6814 Elf_Internal_Rela outrel
;
6816 bfd_boolean skip
, relocate
;
6819 *unresolved_reloc_p
= FALSE
;
6824 outrel
.r_addend
= signed_addend
;
6826 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
6828 if (outrel
.r_offset
== (bfd_vma
) - 1)
6830 else if (outrel
.r_offset
== (bfd_vma
) - 2)
6835 else if (abs_symbol_p
)
6837 /* Local absolute symbol. */
6838 skip
= (h
->forced_local
|| (h
->dynindx
== -1));
6842 outrel
.r_offset
+= (input_section
->output_section
->vma
6843 + input_section
->output_offset
);
6846 memset (&outrel
, 0, sizeof outrel
);
6849 && (!bfd_link_pic (info
)
6850 || !(bfd_link_pie (info
) || SYMBOLIC_BIND (info
, h
))
6851 || !h
->def_regular
))
6852 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
6857 /* On SVR4-ish systems, the dynamic loader cannot
6858 relocate the text and data segments independently,
6859 so the symbol does not matter. */
6861 relocate
= globals
->no_apply_dynamic_relocs
? FALSE
: TRUE
;
6862 outrel
.r_info
= ELFNN_R_INFO (symbol
, AARCH64_R (RELATIVE
));
6863 outrel
.r_addend
+= value
;
6866 sreloc
= elf_section_data (input_section
)->sreloc
;
6867 if (sreloc
== NULL
|| sreloc
->contents
== NULL
)
6868 return bfd_reloc_notsupported
;
6870 loc
= sreloc
->contents
+ sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
6871 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
6873 if (sreloc
->reloc_count
* RELOC_SIZE (globals
) > sreloc
->size
)
6875 /* Sanity to check that we have previously allocated
6876 sufficient space in the relocation section for the
6877 number of relocations we actually want to emit. */
6881 /* If this reloc is against an external symbol, we do not want to
6882 fiddle with the addend. Otherwise, we need to include the symbol
6883 value so that it becomes an addend for the dynamic reloc. */
6885 return bfd_reloc_ok
;
6887 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6888 contents
, rel
->r_offset
, value
,
6892 value
+= signed_addend
;
6895 case BFD_RELOC_MORELLO_CALL26
:
6896 case BFD_RELOC_MORELLO_JUMP26
:
6897 case BFD_RELOC_AARCH64_CALL26
:
6898 case BFD_RELOC_AARCH64_JUMP26
:
6900 asection
*splt
= globals
->root
.splt
;
6901 bfd_boolean via_plt_p
=
6902 splt
!= NULL
&& h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) - 1;
6904 /* A call to an undefined weak symbol is converted to a jump to
6905 the next instruction unless a PLT entry will be created.
6906 The jump to the next instruction is optimized as a NOP.
6907 Do the same for local undefined symbols. */
6908 if (weak_undef_p
&& ! via_plt_p
)
6910 bfd_putl32 (INSN_NOP
, hit_data
);
6911 return bfd_reloc_ok
;
6914 /* If the call goes through a PLT entry, make sure to
6915 check distance to the right destination address. */
6917 value
= (splt
->output_section
->vma
6918 + splt
->output_offset
+ h
->plt
.offset
);
6920 /* Check if a stub has to be inserted because the destination
6922 struct elf_aarch64_stub_hash_entry
*stub_entry
= NULL
;
6924 enum elf_aarch64_stub_type c64_stub
= aarch64_stub_none
;
6926 /* Figure out if we need an interworking stub and if yes, what
6929 c64_stub
= aarch64_interwork_stub (r_type
, to_c64
);
6931 /* If the branch destination is directed to plt stub, "value" will be
6932 the final destination, otherwise we should plus signed_addend, it may
6933 contain non-zero value, for example call to local function symbol
6934 which are turned into "sec_sym + sec_off", and sec_off is kept in
6936 if (c64_stub
!= aarch64_stub_none
6937 || (aarch64_branch_reloc_p (r_type
)
6938 && !aarch64_valid_branch_p ((via_plt_p
? value
6939 : value
+ signed_addend
), place
)))
6941 /* The target is out of reach, so redirect the branch to
6942 the local stub for this function. */
6943 stub_entry
= elfNN_aarch64_get_stub_entry (input_section
, sym_sec
,
6948 if (stub_entry
!= NULL
)
6950 value
= (stub_entry
->stub_offset
6951 + stub_entry
->stub_sec
->output_offset
6952 + stub_entry
->stub_sec
->output_section
->vma
);
6954 /* We have redirected the destination to stub entry address,
6955 so ignore any addend record in the original rela entry. */
6959 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6961 signed_addend
, weak_undef_p
);
6962 *unresolved_reloc_p
= FALSE
;
6965 case BFD_RELOC_AARCH64_16_PCREL
:
6966 case BFD_RELOC_AARCH64_32_PCREL
:
6967 case BFD_RELOC_AARCH64_64_PCREL
:
6968 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
6969 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
6970 case BFD_RELOC_MORELLO_ADR_HI20_NC_PCREL
:
6971 case BFD_RELOC_MORELLO_ADR_HI20_PCREL
:
6972 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
6973 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
6974 case BFD_RELOC_MORELLO_LD_LO17_PCREL
:
6975 case BFD_RELOC_AARCH64_MOVW_PREL_G0
:
6976 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC
:
6977 case BFD_RELOC_AARCH64_MOVW_PREL_G1
:
6978 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC
:
6979 case BFD_RELOC_AARCH64_MOVW_PREL_G2
:
6980 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC
:
6981 case BFD_RELOC_AARCH64_MOVW_PREL_G3
:
6982 if (bfd_link_pic (info
)
6983 && (input_section
->flags
& SEC_ALLOC
) != 0
6984 && (input_section
->flags
& SEC_READONLY
) != 0
6985 && !SYMBOL_REFERENCES_LOCAL (info
, h
))
6987 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6990 /* xgettext:c-format */
6991 (_("%pB: relocation %s against symbol `%s' which may bind "
6992 "externally can not be used when making a shared object; "
6993 "recompile with -fPIC"),
6994 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
6995 h
->root
.root
.string
);
6996 bfd_set_error (bfd_error_bad_value
);
6997 return bfd_reloc_notsupported
;
6999 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
7004 if (bfd_r_type
== BFD_RELOC_AARCH64_ADR_LO21_PCREL
&& isym
!= NULL
7005 && isym
->st_target_internal
& ST_BRANCH_TO_C64
)
7009 case BFD_RELOC_MORELLO_BRANCH19
:
7010 case BFD_RELOC_MORELLO_TSTBR14
:
7013 case BFD_RELOC_AARCH64_BRANCH19
:
7014 case BFD_RELOC_AARCH64_TSTBR14
:
7015 if (h
&& h
->root
.type
== bfd_link_hash_undefined
)
7018 /* xgettext:c-format */
7019 (_("%pB: conditional branch to undefined symbol `%s' "
7020 "not allowed"), input_bfd
, h
->root
.root
.string
);
7021 bfd_set_error (bfd_error_bad_value
);
7022 return bfd_reloc_notsupported
;
7025 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7027 if ((c64_rtype
&& !to_c64
) || (!c64_rtype
&& to_c64
))
7030 /* xgettext:c-format */
7031 (_("%pB: interworking not supported on relocation %s"),
7032 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
7033 return bfd_reloc_notsupported
;
7038 case BFD_RELOC_AARCH64_16
:
7040 case BFD_RELOC_AARCH64_32
:
7042 case BFD_RELOC_AARCH64_ADD_LO12
:
7043 case BFD_RELOC_AARCH64_LDST128_LO12
:
7044 case BFD_RELOC_AARCH64_LDST16_LO12
:
7045 case BFD_RELOC_AARCH64_LDST32_LO12
:
7046 case BFD_RELOC_AARCH64_LDST64_LO12
:
7047 case BFD_RELOC_AARCH64_LDST8_LO12
:
7048 case BFD_RELOC_AARCH64_MOVW_G0
:
7049 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
7050 case BFD_RELOC_AARCH64_MOVW_G0_S
:
7051 case BFD_RELOC_AARCH64_MOVW_G1
:
7052 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
7053 case BFD_RELOC_AARCH64_MOVW_G1_S
:
7054 case BFD_RELOC_AARCH64_MOVW_G2
:
7055 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
7056 case BFD_RELOC_AARCH64_MOVW_G2_S
:
7057 case BFD_RELOC_AARCH64_MOVW_G3
:
7058 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
7060 signed_addend
, weak_undef_p
);
7061 if (bfd_r_type
== BFD_RELOC_AARCH64_ADD_LO12
&& isym
!= NULL
7062 && isym
->st_target_internal
& ST_BRANCH_TO_C64
)
7067 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7068 case BFD_RELOC_MORELLO_ADR_GOT_PAGE
:
7069 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7070 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7071 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7072 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7073 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7074 case BFD_RELOC_MORELLO_LD128_GOT_LO12_NC
:
7075 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7076 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7077 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7078 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
7079 base_got
= globals
->root
.sgot
;
7081 if (base_got
== NULL
)
7082 BFD_ASSERT (h
!= NULL
);
7084 relative_reloc
= FALSE
;
7088 bfd_boolean c64_reloc
=
7089 (bfd_r_type
== BFD_RELOC_MORELLO_LD128_GOT_LO12_NC
7090 || bfd_r_type
== BFD_RELOC_MORELLO_ADR_GOT_PAGE
);
7092 /* If a symbol is not dynamic and is not undefined weak, bind it
7093 locally and generate a RELATIVE relocation under PIC mode.
7095 NOTE: one symbol may be referenced by several relocations, we
7096 should only generate one RELATIVE relocation for that symbol.
7097 Therefore, check GOT offset mark first.
7099 NOTE2: Symbol references via GOT in C64 static binaries without
7100 PIC should always have relative relocations, so we do that here
7102 if (((h
->dynindx
== -1
7104 && h
->root
.type
!= bfd_link_hash_undefweak
7105 && bfd_link_pic (info
))
7106 || (!bfd_link_pic (info
) && bfd_link_executable (info
)
7108 && !symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
7109 relative_reloc
= TRUE
;
7111 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
, value
,
7113 unresolved_reloc_p
);
7114 /* Record the GOT entry address which will be used when generating
7115 RELATIVE relocation. */
7117 got_entry_addr
= value
;
7119 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
7120 addend
= (globals
->root
.sgot
->output_section
->vma
7121 + globals
->root
.sgot
->output_offset
);
7122 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
7124 addend
, weak_undef_p
);
7125 value
|= h
->target_internal
;
7130 struct elf_aarch64_local_symbol
*locals
7131 = elf_aarch64_locals (input_bfd
);
7135 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7137 /* xgettext:c-format */
7138 (_("%pB: local symbol descriptor table be NULL when applying "
7139 "relocation %s against local symbol"),
7140 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
7144 got_entry_addr
= (base_got
->output_section
->vma
7145 + base_got
->output_offset
+ off
);
7147 if (!symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
7149 bfd_put_64 (output_bfd
, value
, base_got
->contents
+ off
);
7151 /* For local symbol, we have done absolute relocation in static
7152 linking stage. While for shared library, we need to update the
7153 content of GOT entry according to the shared object's runtime
7154 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
7155 for dynamic linker. */
7156 if (bfd_link_pic (info
))
7157 relative_reloc
= TRUE
;
7159 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
7162 /* Update the relocation value to GOT entry addr as we have transformed
7163 the direct data access into indirect data access through GOT. */
7164 value
= got_entry_addr
;
7166 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
7167 addend
= base_got
->output_section
->vma
+ base_got
->output_offset
;
7169 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
7171 addend
, weak_undef_p
);
7173 value
|= sym
->st_target_internal
;
7179 Elf_Internal_Rela outrel
;
7181 enum elf_aarch64_reloc_type rtype
= AARCH64_R (RELATIVE
);
7183 s
= globals
->root
.srelgot
;
7185 /* For a C64 relative relocation, also add size and permissions into
7187 if (bfd_r_type
== BFD_RELOC_MORELLO_LD128_GOT_LO12_NC
7188 || bfd_r_type
== BFD_RELOC_MORELLO_ADR_GOT_PAGE
)
7190 bfd_reloc_status_type ret
;
7192 ret
= c64_fixup_frag (input_bfd
, info
, bfd_r_type
, sym
, h
,
7193 sym_sec
, base_got
->contents
+ off
+ 8,
7196 if (ret
!= bfd_reloc_continue
)
7199 rtype
= MORELLO_R (RELATIVE
);
7201 if (bfd_link_executable (info
) && !bfd_link_pic (info
))
7202 s
= globals
->srelcaps
;
7204 outrel
.r_addend
= 0;
7207 outrel
.r_addend
= orig_value
;
7212 outrel
.r_offset
= got_entry_addr
;
7213 outrel
.r_info
= ELFNN_R_INFO (0, rtype
);
7214 elf_append_rela (output_bfd
, s
, &outrel
);
7218 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
7219 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
7220 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
7221 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
7222 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
7223 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
7224 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
7225 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
7226 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
7227 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
7228 if (globals
->root
.sgot
== NULL
)
7229 return bfd_reloc_notsupported
;
7231 value
= (symbol_got_offset (input_bfd
, h
, r_symndx
)
7232 + globals
->root
.sgot
->output_section
->vma
7233 + globals
->root
.sgot
->output_offset
);
7235 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
7238 *unresolved_reloc_p
= FALSE
;
7241 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
7242 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
7243 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
7244 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
7245 if (globals
->root
.sgot
== NULL
)
7246 return bfd_reloc_notsupported
;
7248 value
= symbol_got_offset (input_bfd
, h
, r_symndx
);
7249 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
7252 *unresolved_reloc_p
= FALSE
;
7255 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12
:
7256 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12
:
7257 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC
:
7258 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12
:
7259 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC
:
7260 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12
:
7261 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC
:
7262 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12
:
7263 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC
:
7264 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12
:
7265 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC
:
7266 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0
:
7267 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC
:
7268 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1
:
7269 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC
:
7270 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2
:
7272 if (!(weak_undef_p
|| elf_hash_table (info
)->tls_sec
))
7274 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7276 /* xgettext:c-format */
7277 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
7278 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7279 h
->root
.root
.string
);
7280 bfd_set_error (bfd_error_bad_value
);
7281 return bfd_reloc_notsupported
;
7285 = weak_undef_p
? 0 : signed_addend
- dtpoff_base (info
);
7286 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
7288 def_value
, weak_undef_p
);
7292 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
:
7293 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12
:
7294 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC
:
7295 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12
:
7296 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC
:
7297 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12
:
7298 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC
:
7299 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12
:
7300 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC
:
7301 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12
:
7302 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC
:
7303 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0
:
7304 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
:
7305 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
:
7306 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
:
7307 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
:
7309 if (!(weak_undef_p
|| elf_hash_table (info
)->tls_sec
))
7311 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7313 /* xgettext:c-format */
7314 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
7315 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7316 h
->root
.root
.string
);
7317 bfd_set_error (bfd_error_bad_value
);
7318 return bfd_reloc_notsupported
;
7322 = weak_undef_p
? 0 : signed_addend
- tpoff_base (info
);
7323 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
7325 def_value
, weak_undef_p
);
7326 *unresolved_reloc_p
= FALSE
;
7330 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
7331 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7332 case BFD_RELOC_MORELLO_TLSDESC_ADR_PAGE20
:
7333 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7334 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
7335 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
7336 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7337 case BFD_RELOC_MORELLO_TLSDESC_LD128_LO12
:
7338 if (globals
->root
.sgot
== NULL
)
7339 return bfd_reloc_notsupported
;
7340 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
7341 + globals
->root
.sgotplt
->output_section
->vma
7342 + globals
->root
.sgotplt
->output_offset
7343 + globals
->sgotplt_jump_table_size
);
7345 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
7348 *unresolved_reloc_p
= FALSE
;
7351 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7352 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7353 if (globals
->root
.sgot
== NULL
)
7354 return bfd_reloc_notsupported
;
7356 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
7357 + globals
->root
.sgotplt
->output_section
->vma
7358 + globals
->root
.sgotplt
->output_offset
7359 + globals
->sgotplt_jump_table_size
);
7361 value
-= (globals
->root
.sgot
->output_section
->vma
7362 + globals
->root
.sgot
->output_offset
);
7364 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
7367 *unresolved_reloc_p
= FALSE
;
7370 case BFD_RELOC_MORELLO_CAPINIT
:
7372 Elf_Internal_Rela outrel
;
7374 if (input_section
->flags
& SEC_READONLY
)
7377 /* xgettext:c-format */
7378 (_("%pB: capability relocation section must be writable"),
7380 bfd_set_error (bfd_error_bad_value
);
7381 return bfd_reloc_notsupported
;
7384 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
, info
,
7388 outrel
.r_offset
+= (input_section
->output_section
->vma
7389 + input_section
->output_offset
);
7391 /* Capability-aligned. */
7392 if (outrel
.r_offset
& 0xf)
7393 return bfd_reloc_overflow
;
7395 bfd_reloc_status_type ret
;
7397 ret
= c64_fixup_frag (input_bfd
, info
, bfd_r_type
, sym
, h
, sym_sec
,
7398 hit_data
+ 8, value
, signed_addend
);
7400 if (ret
!= bfd_reloc_continue
)
7403 outrel
.r_addend
= signed_addend
;
7405 /* Emit a dynamic relocation if we are building PIC. */
7408 && bfd_link_pic (info
)
7409 && !SYMBOL_REFERENCES_LOCAL (info
, h
))
7410 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
7412 outrel
.r_info
= ELFNN_R_INFO (0, MORELLO_R (RELATIVE
));
7414 value
|= (h
!= NULL
? h
->target_internal
: sym
->st_target_internal
);
7416 asection
*s
= globals
->srelcaps
;
7418 elf_append_rela (output_bfd
, s
, &outrel
);
7419 *unresolved_reloc_p
= FALSE
;
7424 return bfd_reloc_notsupported
;
7428 *saved_addend
= value
;
7430 /* Only apply the final relocation in a sequence. */
7432 return bfd_reloc_continue
;
7434 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
7438 /* LP64 and ILP32 operates on x- and w-registers respectively.
7439 Next definitions take into account the difference between
7440 corresponding machine codes. R means x-register if the target
7441 arch is LP64, and w-register if the target is ILP32. */
7444 # define add_R0_R0 (0x91000000)
7445 # define add_R0_R0_R1 (0x8b000020)
7446 # define add_R0_R1 (0x91400020)
7447 # define ldr_R0 (0x58000000)
7448 # define ldr_R0_mask(i) (i & 0xffffffe0)
7449 # define ldr_R0_x0 (0xf9400000)
7450 # define ldr_hw_R0 (0xf2a00000)
7451 # define movk_R0 (0xf2800000)
7452 # define movz_R0 (0xd2a00000)
7453 # define movz_hw_R0 (0xd2c00000)
7454 #else /*ARCH_SIZE == 32 */
7455 # define add_R0_R0 (0x11000000)
7456 # define add_R0_R0_R1 (0x0b000020)
7457 # define add_R0_R1 (0x11400020)
7458 # define ldr_R0 (0x18000000)
7459 # define ldr_R0_mask(i) (i & 0xbfffffe0)
7460 # define ldr_R0_x0 (0xb9400000)
7461 # define ldr_hw_R0 (0x72a00000)
7462 # define movk_R0 (0x72800000)
7463 # define movz_R0 (0x52a00000)
7464 # define movz_hw_R0 (0x52c00000)
7467 /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub,
7468 it is used to identify the stub information to reset. */
7470 struct erratum_843419_branch_to_stub_clear_data
7472 bfd_vma adrp_offset
;
7473 asection
*output_section
;
7476 /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and
7477 section inside IN_ARG matches. The clearing is done by setting the
7478 stub_type to none. */
7481 _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry
*gen_entry
,
7484 struct elf_aarch64_stub_hash_entry
*stub_entry
7485 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
7486 struct erratum_843419_branch_to_stub_clear_data
*data
7487 = (struct erratum_843419_branch_to_stub_clear_data
*) in_arg
;
7489 if (stub_entry
->target_section
!= data
->output_section
7490 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
7491 || stub_entry
->adrp_offset
!= data
->adrp_offset
)
7494 /* Change the stub type instead of removing the entry, removing from the hash
7495 table would be slower and we have already reserved the memory for the entry
7496 so there wouldn't be much gain. Changing the stub also keeps around a
7497 record of what was there before. */
7498 stub_entry
->stub_type
= aarch64_stub_none
;
7500 /* We're done and there could have been only one matching stub at that
7501 particular offset, so abort further traversal. */
7505 /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419
7506 sequence. In this case the erratum no longer applies and we need to remove
7507 the entry from the pending stub generation. This clears matching adrp insn
7508 at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */
7511 clear_erratum_843419_entry (struct elf_aarch64_link_hash_table
*globals
,
7512 bfd_vma adrp_offset
, asection
*input_section
)
7514 if (globals
->fix_erratum_843419
& ERRAT_ADRP
)
7516 struct erratum_843419_branch_to_stub_clear_data data
;
7517 data
.adrp_offset
= adrp_offset
;
7518 data
.output_section
= input_section
;
7520 bfd_hash_traverse (&globals
->stub_hash_table
,
7521 _bfd_aarch64_erratum_843419_clear_stub
, &data
);
7525 #define BUILD_MOVZ(_reg, _imm) (movz_R0 \
7526 | ((((_imm) >> 16) & 0xffff) << 5) \
7528 #define BUILD_MOVK(_reg, _imm) (movk_R0 | (((_imm) & 0xffff) << 5) | (_reg))
7530 /* Handle TLS relaxations. Relaxing is possible for symbols that use
7531 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
7534 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
7535 is to then call final_link_relocate. Return other values in the
7538 static bfd_reloc_status_type
7539 elfNN_aarch64_tls_relax (bfd
*input_bfd
, struct bfd_link_info
*info
,
7540 asection
*input_section
,
7541 bfd_byte
*contents
, Elf_Internal_Rela
*rel
,
7542 struct elf_link_hash_entry
*h
, unsigned long r_symndx
)
7544 bfd_boolean is_local
= h
== NULL
;
7546 unsigned int r_type
= ELFNN_R_TYPE (rel
->r_info
);
7548 bfd_vma sym_size
= 0;
7549 struct elf_aarch64_link_hash_table
*globals
= elf_aarch64_hash_table (info
);
7551 BFD_ASSERT (globals
&& input_bfd
&& contents
&& rel
);
7559 Elf_Internal_Sym
*sym
;
7561 sym
= bfd_sym_from_r_symndx (&globals
->root
.sym_cache
, input_bfd
,
7563 BFD_ASSERT (sym
!= NULL
);
7564 sym_size
= sym
->st_size
;
7568 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
))
7570 case BFD_RELOC_MORELLO_TLSDESC_ADR_PAGE20
:
7571 if (is_local
|| !bfd_link_pic (info
))
7573 /* GD->LE relaxation:
7574 nop => movz x1, objsize_hi16
7575 adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var */
7576 bfd_putl32 (BUILD_MOVZ(1, sym_size
), contents
+ rel
->r_offset
- 4);
7577 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
7579 /* We have relaxed the adrp into a mov, we may have to clear any
7580 pending erratum fixes. */
7581 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
7582 return bfd_reloc_continue
;
7586 /* GD->IE relaxation: Not implemented. */
7587 return bfd_reloc_continue
;
7589 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7590 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
7593 /* GD->LE relaxation:
7594 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
7596 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
7598 Where R is x for LP64, and w for ILP32. */
7599 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
7600 /* We have relaxed the adrp into a mov, we may have to clear any
7601 pending erratum fixes. */
7602 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
7603 return bfd_reloc_continue
;
7607 /* GD->IE relaxation:
7608 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
7610 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
7612 return bfd_reloc_continue
;
7615 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7619 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7622 /* Tiny TLSDESC->LE relaxation:
7623 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
7624 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
7628 Where R is x for LP64, and w for ILP32. */
7629 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
7630 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
7632 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
7633 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
7634 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
7636 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
7637 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
+ 4);
7638 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
7639 return bfd_reloc_continue
;
7643 /* Tiny TLSDESC->IE relaxation:
7644 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
7645 adr x0, :tlsdesc:var => nop
7649 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
7650 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
7652 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
7653 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
7655 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
);
7656 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
7657 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
7658 return bfd_reloc_continue
;
7661 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
7664 /* Tiny GD->LE relaxation:
7665 adr x0, :tlsgd:var => mrs x1, tpidr_el0
7666 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
7667 nop => add R0, R0, #:tprel_lo12_nc:x
7669 Where R is x for LP64, and x for Ilp32. */
7671 /* First kill the tls_get_addr reloc on the bl instruction. */
7672 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
7674 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 0);
7675 bfd_putl32 (add_R0_R1
, contents
+ rel
->r_offset
+ 4);
7676 bfd_putl32 (add_R0_R0
, contents
+ rel
->r_offset
+ 8);
7678 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
7679 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
));
7680 rel
[1].r_offset
= rel
->r_offset
+ 8;
7682 /* Move the current relocation to the second instruction in
7685 rel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
7686 AARCH64_R (TLSLE_ADD_TPREL_HI12
));
7687 return bfd_reloc_continue
;
7691 /* Tiny GD->IE relaxation:
7692 adr x0, :tlsgd:var => ldr R0, :gottprel:var
7693 bl __tls_get_addr => mrs x1, tpidr_el0
7694 nop => add R0, R0, R1
7696 Where R is x for LP64, and w for Ilp32. */
7698 /* First kill the tls_get_addr reloc on the bl instruction. */
7699 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
7700 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
7702 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
);
7703 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
7704 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 8);
7705 return bfd_reloc_continue
;
7709 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
7710 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSGD_MOVW_G0_NC
));
7711 BFD_ASSERT (rel
->r_offset
+ 12 == rel
[2].r_offset
);
7712 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (CALL26
));
7716 /* Large GD->LE relaxation:
7717 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
7718 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
7719 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
7720 bl __tls_get_addr => mrs x1, tpidr_el0
7721 nop => add x0, x0, x1
7723 rel
[2].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
7724 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
7725 rel
[2].r_offset
= rel
->r_offset
+ 8;
7727 bfd_putl32 (movz_hw_R0
, contents
+ rel
->r_offset
+ 0);
7728 bfd_putl32 (ldr_hw_R0
, contents
+ rel
->r_offset
+ 4);
7729 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
+ 8);
7730 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
7731 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 16);
7735 /* Large GD->IE relaxation:
7736 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
7737 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
7738 add x0, gp, x0 => ldr x0, [gp, x0]
7739 bl __tls_get_addr => mrs x1, tpidr_el0
7740 nop => add x0, x0, x1
7742 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
7743 bfd_putl32 (0xd2a80000, contents
+ rel
->r_offset
+ 0);
7744 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
+ 8);
7745 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
7746 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 16);
7748 return bfd_reloc_continue
;
7750 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
7751 return bfd_reloc_continue
;
7754 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
7755 return bfd_reloc_continue
;
7757 case BFD_RELOC_MORELLO_TLSDESC_LD128_LO12
:
7758 if (is_local
|| !bfd_link_pic (info
))
7760 /* GD->LE relaxation:
7761 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var */
7762 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
7763 return bfd_reloc_continue
;
7767 /* GD->IE relaxation: not implemented. */
7768 return bfd_reloc_continue
;
7770 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
7773 /* GD->LE relaxation:
7774 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
7776 Where R is x for lp64 mode, and w for ILP32 mode. */
7777 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
7778 return bfd_reloc_continue
;
7782 /* GD->IE relaxation:
7783 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
7785 Where R is x for lp64 mode, and w for ILP32 mode. */
7786 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
7787 bfd_putl32 (ldr_R0_mask (insn
), contents
+ rel
->r_offset
);
7788 return bfd_reloc_continue
;
7791 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
7794 /* GD->LE relaxation
7795 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
7796 bl __tls_get_addr => mrs x1, tpidr_el0
7797 nop => add R0, R1, R0
7799 Where R is x for lp64 mode, and w for ILP32 mode. */
7801 /* First kill the tls_get_addr reloc on the bl instruction. */
7802 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
7803 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
7805 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
7806 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
7807 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 8);
7808 return bfd_reloc_continue
;
7812 /* GD->IE relaxation
7813 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
7814 BL __tls_get_addr => mrs x1, tpidr_el0
7816 NOP => add R0, R1, R0
7818 Where R is x for lp64 mode, and w for ilp32 mode. */
7820 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
7822 /* Remove the relocation on the BL instruction. */
7823 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
7825 /* We choose to fixup the BL and NOP instructions using the
7826 offset from the second relocation to allow flexibility in
7827 scheduling instructions between the ADD and BL. */
7828 bfd_putl32 (ldr_R0_x0
, contents
+ rel
->r_offset
);
7829 bfd_putl32 (0xd53bd041, contents
+ rel
[1].r_offset
);
7830 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
[1].r_offset
+ 4);
7831 return bfd_reloc_continue
;
7834 case BFD_RELOC_MORELLO_TLSDESC_CALL
:
7835 /* GD->LE relaxation:
7836 blr cd => add c0, c2, x0 */
7837 if (is_local
|| !bfd_link_pic (info
))
7839 bfd_putl32 (0xc2a06040, contents
+ rel
->r_offset
);
7840 return bfd_reloc_ok
;
7845 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
7846 /* GD->LE relaxation:
7847 ldr cd, [c0, #:tlsdesc_lo12:var] => movk x1, objsize_lo16 */
7848 if ((is_local
|| !bfd_link_pic (info
))
7849 && ELFNN_R_TYPE (rel
[1].r_info
) == MORELLO_R (TLSDESC_CALL
))
7851 bfd_putl32 (BUILD_MOVK(1, sym_size
), contents
+ rel
->r_offset
);
7852 return bfd_reloc_continue
;
7856 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
7857 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
7858 /* GD->IE/LE relaxation:
7859 add x0, x0, #:tlsdesc_lo12:var => nop
7863 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
);
7864 return bfd_reloc_ok
;
7866 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
7869 /* GD->LE relaxation:
7870 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
7872 Where R is x for lp64 mode, and w for ILP32 mode. */
7873 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
7874 return bfd_reloc_continue
;
7878 /* GD->IE relaxation:
7879 ldr xd, [gp, xn] => ldr R0, [gp, xn]
7881 Where R is x for lp64 mode, and w for ILP32 mode. */
7882 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
7883 bfd_putl32 (ldr_R0_mask (insn
), contents
+ rel
->r_offset
);
7884 return bfd_reloc_ok
;
7887 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7888 /* GD->LE relaxation:
7889 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
7891 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
7893 Where R is x for lp64 mode, and w for ILP32 mode. */
7895 bfd_putl32 (ldr_hw_R0
, contents
+ rel
->r_offset
);
7896 return bfd_reloc_continue
;
7898 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7901 /* GD->LE relaxation:
7902 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
7904 Where R is x for lp64 mode, and w for ILP32 mode. */
7905 bfd_putl32 (movz_hw_R0
, contents
+ rel
->r_offset
);
7906 return bfd_reloc_continue
;
7910 /* GD->IE relaxation:
7911 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
7913 Where R is x for lp64 mode, and w for ILP32 mode. */
7914 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
7915 bfd_putl32 (movz_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
7916 return bfd_reloc_continue
;
7919 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
7920 /* IE->LE relaxation:
7921 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
7923 Where R is x for lp64 mode, and w for ILP32 mode. */
7926 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
7927 bfd_putl32 (movz_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
7928 /* We have relaxed the adrp into a mov, we may have to clear any
7929 pending erratum fixes. */
7930 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
7932 return bfd_reloc_continue
;
7934 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
7935 /* IE->LE relaxation:
7936 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
7938 Where R is x for lp64 mode, and w for ILP32 mode. */
7941 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
7942 bfd_putl32 (movk_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
7944 return bfd_reloc_continue
;
7946 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
7947 /* LD->LE relaxation (tiny):
7948 adr x0, :tlsldm:x => mrs x0, tpidr_el0
7949 bl __tls_get_addr => add R0, R0, TCB_SIZE
7951 Where R is x for lp64 mode, and w for ilp32 mode. */
7954 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
7955 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
7956 /* No need of CALL26 relocation for tls_get_addr. */
7957 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
7958 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
+ 0);
7959 bfd_putl32 (add_R0_R0
| (TCB_SIZE
<< 10),
7960 contents
+ rel
->r_offset
+ 4);
7961 return bfd_reloc_ok
;
7963 return bfd_reloc_continue
;
7965 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
7966 /* LD->LE relaxation (small):
7967 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
7971 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
);
7972 return bfd_reloc_ok
;
7974 return bfd_reloc_continue
;
7976 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
7977 /* LD->LE relaxation (small):
7978 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
7979 bl __tls_get_addr => nop
7981 Where R is x for lp64 mode, and w for ilp32 mode. */
7984 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
7985 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
7986 /* No need of CALL26 relocation for tls_get_addr. */
7987 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
7988 bfd_putl32 (add_R0_R0
| (TCB_SIZE
<< 10),
7989 contents
+ rel
->r_offset
+ 0);
7990 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
7991 return bfd_reloc_ok
;
7993 return bfd_reloc_continue
;
7996 return bfd_reloc_continue
;
7999 return bfd_reloc_ok
;
8002 /* Relocate an AArch64 ELF section. */
8005 elfNN_aarch64_relocate_section (bfd
*output_bfd
,
8006 struct bfd_link_info
*info
,
8008 asection
*input_section
,
8010 Elf_Internal_Rela
*relocs
,
8011 Elf_Internal_Sym
*local_syms
,
8012 asection
**local_sections
)
8014 Elf_Internal_Shdr
*symtab_hdr
;
8015 struct elf_link_hash_entry
**sym_hashes
;
8016 Elf_Internal_Rela
*rel
;
8017 Elf_Internal_Rela
*relend
;
8019 struct elf_aarch64_link_hash_table
*globals
;
8020 bfd_boolean save_addend
= FALSE
;
8023 globals
= elf_aarch64_hash_table (info
);
8025 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
8026 sym_hashes
= elf_sym_hashes (input_bfd
);
8029 relend
= relocs
+ input_section
->reloc_count
;
8030 for (; rel
< relend
; rel
++)
8032 unsigned int r_type
;
8033 bfd_reloc_code_real_type bfd_r_type
;
8034 bfd_reloc_code_real_type relaxed_bfd_r_type
;
8035 reloc_howto_type
*howto
;
8036 unsigned long r_symndx
;
8037 Elf_Internal_Sym
*sym
;
8039 struct elf_link_hash_entry
*h
;
8041 bfd_reloc_status_type r
;
8044 bfd_boolean unresolved_reloc
= FALSE
;
8045 char *error_message
= NULL
;
8047 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
8048 r_type
= ELFNN_R_TYPE (rel
->r_info
);
8050 bfd_reloc
.howto
= elfNN_aarch64_howto_from_type (input_bfd
, r_type
);
8051 howto
= bfd_reloc
.howto
;
8054 return _bfd_unrecognized_reloc (input_bfd
, input_section
, r_type
);
8056 bfd_r_type
= elfNN_aarch64_bfd_reloc_from_howto (howto
);
8062 if (r_symndx
< symtab_hdr
->sh_info
)
8064 sym
= local_syms
+ r_symndx
;
8065 sym_type
= ELFNN_ST_TYPE (sym
->st_info
);
8066 sec
= local_sections
[r_symndx
];
8068 /* An object file might have a reference to a local
8069 undefined symbol. This is a daft object file, but we
8070 should at least do something about it. */
8071 if (r_type
!= R_AARCH64_NONE
&& r_type
!= R_AARCH64_NULL
8072 && bfd_is_und_section (sec
)
8073 && ELF_ST_BIND (sym
->st_info
) != STB_WEAK
)
8074 (*info
->callbacks
->undefined_symbol
)
8075 (info
, bfd_elf_string_from_elf_section
8076 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
),
8077 input_bfd
, input_section
, rel
->r_offset
, TRUE
);
8079 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
8081 /* Relocate against local STT_GNU_IFUNC symbol. */
8082 if (!bfd_link_relocatable (info
)
8083 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8085 h
= elfNN_aarch64_get_local_sym_hash (globals
, input_bfd
,
8090 /* Set STT_GNU_IFUNC symbol value. */
8091 h
->root
.u
.def
.value
= sym
->st_value
;
8092 h
->root
.u
.def
.section
= sec
;
8097 bfd_boolean warned
, ignored
;
8099 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
8100 r_symndx
, symtab_hdr
, sym_hashes
,
8102 unresolved_reloc
, warned
, ignored
);
8107 if (sec
!= NULL
&& discarded_section (sec
))
8108 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
8109 rel
, 1, relend
, howto
, 0, contents
);
8111 if (bfd_link_relocatable (info
))
8115 name
= h
->root
.root
.string
;
8118 name
= (bfd_elf_string_from_elf_section
8119 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
8120 if (name
== NULL
|| *name
== '\0')
8121 name
= bfd_section_name (sec
);
8125 && r_type
!= R_AARCH64_NONE
8126 && r_type
!= R_AARCH64_NULL
8128 || h
->root
.type
== bfd_link_hash_defined
8129 || h
->root
.type
== bfd_link_hash_defweak
)
8130 && IS_AARCH64_TLS_RELOC (bfd_r_type
) != (sym_type
== STT_TLS
))
8133 ((sym_type
== STT_TLS
8134 /* xgettext:c-format */
8135 ? _("%pB(%pA+%#" PRIx64
"): %s used with TLS symbol %s")
8136 /* xgettext:c-format */
8137 : _("%pB(%pA+%#" PRIx64
"): %s used with non-TLS symbol %s")),
8139 input_section
, (uint64_t) rel
->r_offset
, howto
->name
, name
);
8144 && IS_AARCH64_TLS_RELOC (bfd_r_type
)
8145 && h
->root
.type
== bfd_link_hash_undefweak
)
8146 /* We have already warned about these in aarch64_check_relocs,
8147 so just skip over them. */
8150 /* We relax only if we can see that there can be a valid transition
8151 from a reloc type to another.
8152 We call elfNN_aarch64_final_link_relocate unless we're completely
8153 done, i.e., the relaxation produced the final output we want. */
8155 relaxed_bfd_r_type
= aarch64_tls_transition (input_bfd
, info
, rel
,
8157 if (relaxed_bfd_r_type
!= bfd_r_type
)
8159 bfd_r_type
= relaxed_bfd_r_type
;
8160 howto
= elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type
);
8161 BFD_ASSERT (howto
!= NULL
);
8162 r_type
= howto
->type
;
8163 r
= elfNN_aarch64_tls_relax (input_bfd
, info
, input_section
,
8164 contents
, rel
, h
, r_symndx
);
8165 unresolved_reloc
= 0;
8168 r
= bfd_reloc_continue
;
8170 /* There may be multiple consecutive relocations for the
8171 same offset. In that case we are supposed to treat the
8172 output of each relocation as the addend for the next. */
8173 if (rel
+ 1 < relend
8174 && rel
->r_offset
== rel
[1].r_offset
8175 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NONE
8176 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NULL
)
8179 save_addend
= FALSE
;
8181 if (r
== bfd_reloc_continue
)
8182 r
= elfNN_aarch64_final_link_relocate (howto
, input_bfd
, output_bfd
,
8183 input_section
, contents
, rel
,
8184 relocation
, info
, sec
,
8185 h
, &unresolved_reloc
,
8186 save_addend
, &addend
, sym
);
8188 bfd_boolean c64_rtype
= FALSE
;
8190 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
))
8192 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
8193 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
8194 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
8195 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
8196 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
8197 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
8198 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
8199 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
8200 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
8202 bfd_boolean need_relocs
= FALSE
;
8207 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
8208 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
8211 (!bfd_link_executable (info
) || indx
!= 0) &&
8213 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8214 || h
->root
.type
!= bfd_link_hash_undefweak
);
8216 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
8220 Elf_Internal_Rela rela
;
8221 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPMOD
));
8223 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
8224 globals
->root
.sgot
->output_offset
+ off
;
8227 loc
= globals
->root
.srelgot
->contents
;
8228 loc
+= globals
->root
.srelgot
->reloc_count
++
8229 * RELOC_SIZE (htab
);
8230 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
8232 bfd_reloc_code_real_type real_type
=
8233 elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
8235 if (real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
8236 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
8237 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
)
8239 /* For local dynamic, don't generate DTPREL in any case.
8240 Initialize the DTPREL slot into zero, so we get module
8241 base address when invoke runtime TLS resolver. */
8242 bfd_put_NN (output_bfd
, 0,
8243 globals
->root
.sgot
->contents
+ off
8244 + GOT_ENTRY_SIZE (globals
));
8248 bfd_put_NN (output_bfd
,
8249 relocation
- dtpoff_base (info
),
8250 globals
->root
.sgot
->contents
+ off
8251 + GOT_ENTRY_SIZE (globals
));
8255 /* This TLS symbol is global. We emit a
8256 relocation to fixup the tls offset at load
8259 ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPREL
));
8262 (globals
->root
.sgot
->output_section
->vma
8263 + globals
->root
.sgot
->output_offset
+ off
8264 + GOT_ENTRY_SIZE (globals
));
8266 loc
= globals
->root
.srelgot
->contents
;
8267 loc
+= globals
->root
.srelgot
->reloc_count
++
8268 * RELOC_SIZE (globals
);
8269 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
8270 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
8271 globals
->root
.sgot
->contents
+ off
8272 + GOT_ENTRY_SIZE (globals
));
8277 bfd_put_NN (output_bfd
, (bfd_vma
) 1,
8278 globals
->root
.sgot
->contents
+ off
);
8279 bfd_put_NN (output_bfd
,
8280 relocation
- dtpoff_base (info
),
8281 globals
->root
.sgot
->contents
+ off
8282 + GOT_ENTRY_SIZE (globals
));
8285 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
8289 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
8290 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
8291 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
8292 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
8293 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
8294 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
8296 bfd_boolean need_relocs
= FALSE
;
8301 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
8303 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
8306 (!bfd_link_executable (info
) || indx
!= 0) &&
8308 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8309 || h
->root
.type
!= bfd_link_hash_undefweak
);
8311 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
8315 Elf_Internal_Rela rela
;
8318 rela
.r_addend
= relocation
- dtpoff_base (info
);
8322 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_TPREL
));
8323 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
8324 globals
->root
.sgot
->output_offset
+ off
;
8326 loc
= globals
->root
.srelgot
->contents
;
8327 loc
+= globals
->root
.srelgot
->reloc_count
++
8328 * RELOC_SIZE (htab
);
8330 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
8332 bfd_put_NN (output_bfd
, rela
.r_addend
,
8333 globals
->root
.sgot
->contents
+ off
);
8336 bfd_put_NN (output_bfd
, relocation
- tpoff_base (info
),
8337 globals
->root
.sgot
->contents
+ off
);
8339 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
8343 case BFD_RELOC_MORELLO_TLSDESC_ADR_PAGE20
:
8344 case BFD_RELOC_MORELLO_TLSDESC_LD128_LO12
:
8348 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
8349 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
8350 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
8351 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
8352 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
8353 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
8354 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
8355 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd
, h
, r_symndx
))
8357 bfd_boolean need_relocs
= FALSE
;
8358 int indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
8359 bfd_vma off
= symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
);
8361 need_relocs
= (h
== NULL
8362 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8363 || h
->root
.type
!= bfd_link_hash_undefweak
);
8365 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
8366 BFD_ASSERT (globals
->root
.sgot
!= NULL
);
8371 Elf_Internal_Rela rela
;
8373 rela
.r_info
= ELFNN_R_INFO (indx
,
8374 (c64_rtype
? MORELLO_R (TLSDESC
)
8375 : AARCH64_R (TLSDESC
)));
8378 rela
.r_offset
= (globals
->root
.sgotplt
->output_section
->vma
8379 + globals
->root
.sgotplt
->output_offset
8380 + off
+ globals
->sgotplt_jump_table_size
);
8383 rela
.r_addend
= relocation
- dtpoff_base (info
);
8385 /* Allocate the next available slot in the PLT reloc
8386 section to hold our R_AARCH64_TLSDESC, the next
8387 available slot is determined from reloc_count,
8388 which we step. But note, reloc_count was
8389 artifically moved down while allocating slots for
8390 real PLT relocs such that all of the PLT relocs
8391 will fit above the initial reloc_count and the
8392 extra stuff will fit below. */
8393 loc
= globals
->root
.srelplt
->contents
;
8394 loc
+= globals
->root
.srelplt
->reloc_count
++
8395 * RELOC_SIZE (globals
);
8397 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
8399 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
8400 globals
->root
.sgotplt
->contents
+ off
+
8401 globals
->sgotplt_jump_table_size
);
8402 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
8403 globals
->root
.sgotplt
->contents
+ off
+
8404 globals
->sgotplt_jump_table_size
+
8405 GOT_ENTRY_SIZE (globals
));
8408 symbol_tlsdesc_got_offset_mark (input_bfd
, h
, r_symndx
);
8415 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8416 because such sections are not SEC_ALLOC and thus ld.so will
8417 not process them. */
8418 if (unresolved_reloc
8419 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
8421 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
8422 +rel
->r_offset
) != (bfd_vma
) - 1)
8425 /* xgettext:c-format */
8426 (_("%pB(%pA+%#" PRIx64
"): "
8427 "unresolvable %s relocation against symbol `%s'"),
8428 input_bfd
, input_section
, (uint64_t) rel
->r_offset
, howto
->name
,
8429 h
->root
.root
.string
);
8433 if (r
!= bfd_reloc_ok
&& r
!= bfd_reloc_continue
)
8435 bfd_reloc_code_real_type real_r_type
8436 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
8440 case bfd_reloc_overflow
:
8441 (*info
->callbacks
->reloc_overflow
)
8442 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
, (bfd_vma
) 0,
8443 input_bfd
, input_section
, rel
->r_offset
);
8444 if (real_r_type
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
8445 || real_r_type
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
)
8447 (*info
->callbacks
->warning
)
8449 _("too many GOT entries for -fpic, "
8450 "please recompile with -fPIC"),
8451 name
, input_bfd
, input_section
, rel
->r_offset
);
8454 /* Overflow can occur when a variable is referenced with a type
8455 that has a larger alignment than the type with which it was
8457 file1.c: extern int foo; int a (void) { return foo; }
8458 file2.c: char bar, foo, baz;
8459 If the variable is placed into a data section at an offset
8460 that is incompatible with the larger alignment requirement
8461 overflow will occur. (Strictly speaking this is not overflow
8462 but rather an alignment problem, but the bfd_reloc_ error
8463 enum does not have a value to cover that situation).
8465 Try to catch this situation here and provide a more helpful
8466 error message to the user. */
8467 if (addend
& (((bfd_vma
) 1 << howto
->rightshift
) - 1)
8468 /* FIXME: Are we testing all of the appropriate reloc
8470 && (real_r_type
== BFD_RELOC_AARCH64_LD_LO19_PCREL
8471 || real_r_type
== BFD_RELOC_AARCH64_LDST16_LO12
8472 || real_r_type
== BFD_RELOC_AARCH64_LDST32_LO12
8473 || real_r_type
== BFD_RELOC_AARCH64_LDST64_LO12
8474 || real_r_type
== BFD_RELOC_AARCH64_LDST128_LO12
))
8476 info
->callbacks
->warning
8477 (info
, _("one possible cause of this error is that the \
8478 symbol is being referenced in the indicated code as if it had a larger \
8479 alignment than was declared where it was defined"),
8480 name
, input_bfd
, input_section
, rel
->r_offset
);
8483 if (real_r_type
== BFD_RELOC_MORELLO_CAPINIT
)
8484 info
->callbacks
->warning
8485 (info
, _("relocation offset must be capability aligned"),
8486 name
, input_bfd
, input_section
, rel
->r_offset
);
8489 case bfd_reloc_undefined
:
8490 (*info
->callbacks
->undefined_symbol
)
8491 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
8494 case bfd_reloc_outofrange
:
8495 error_message
= _("out of range");
8498 case bfd_reloc_notsupported
:
8499 error_message
= _("unsupported relocation");
8502 case bfd_reloc_dangerous
:
8503 /* error_message should already be set. */
8507 error_message
= _("unknown error");
8511 BFD_ASSERT (error_message
!= NULL
);
8512 (*info
->callbacks
->reloc_dangerous
)
8513 (info
, error_message
, input_bfd
, input_section
, rel
->r_offset
);
8525 /* Set the right machine number. */
8528 elfNN_aarch64_object_p (bfd
*abfd
)
8531 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64_ilp32
);
8533 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64
);
8538 /* Function to keep AArch64 specific flags in the ELF header. */
8541 elfNN_aarch64_set_private_flags (bfd
*abfd
, flagword flags
)
8543 if (elf_flags_init (abfd
) && elf_elfheader (abfd
)->e_flags
!= flags
)
8548 elf_elfheader (abfd
)->e_flags
= flags
;
8549 elf_flags_init (abfd
) = TRUE
;
8555 /* Merge backend specific data from an object file to the output
8556 object file when linking. */
8559 elfNN_aarch64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
8561 bfd
*obfd
= info
->output_bfd
;
8564 bfd_boolean flags_compatible
= TRUE
;
8567 /* Check if we have the same endianess. */
8568 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
8571 if (!is_aarch64_elf (ibfd
) || !is_aarch64_elf (obfd
))
8574 /* The input BFD must have had its flags initialised. */
8575 /* The following seems bogus to me -- The flags are initialized in
8576 the assembler but I don't think an elf_flags_init field is
8577 written into the object. */
8578 /* BFD_ASSERT (elf_flags_init (ibfd)); */
8580 in_flags
= elf_elfheader (ibfd
)->e_flags
;
8581 out_flags
= elf_elfheader (obfd
)->e_flags
;
8583 if (!elf_flags_init (obfd
))
8585 /* If the input is the default architecture and had the default
8586 flags then do not bother setting the flags for the output
8587 architecture, instead allow future merges to do this. If no
8588 future merges ever set these flags then they will retain their
8589 uninitialised values, which surprise surprise, correspond
8590 to the default values. */
8591 if (bfd_get_arch_info (ibfd
)->the_default
8592 && elf_elfheader (ibfd
)->e_flags
== 0)
8595 elf_flags_init (obfd
) = TRUE
;
8596 elf_elfheader (obfd
)->e_flags
= in_flags
;
8598 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
8599 && bfd_get_arch_info (obfd
)->the_default
)
8600 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
8601 bfd_get_mach (ibfd
));
8606 /* Identical flags must be compatible. */
8607 if (in_flags
== out_flags
)
8610 /* Check to see if the input BFD actually contains any sections. If
8611 not, its flags may not have been initialised either, but it
8612 cannot actually cause any incompatiblity. Do not short-circuit
8613 dynamic objects; their section list may be emptied by
8614 elf_link_add_object_symbols.
8616 Also check to see if there are no code sections in the input.
8617 In this case there is no need to check for code specific flags.
8618 XXX - do we need to worry about floating-point format compatability
8619 in data sections ? */
8620 if (!(ibfd
->flags
& DYNAMIC
))
8622 bfd_boolean null_input_bfd
= TRUE
;
8623 bfd_boolean only_data_sections
= TRUE
;
8625 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8627 if ((bfd_section_flags (sec
)
8628 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
8629 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
8630 only_data_sections
= FALSE
;
8632 null_input_bfd
= FALSE
;
8636 if (null_input_bfd
|| only_data_sections
)
8640 return flags_compatible
;
8643 /* Display the flags field. */
8646 elfNN_aarch64_print_private_bfd_data (bfd
*abfd
, void *ptr
)
8648 FILE *file
= (FILE *) ptr
;
8649 unsigned long flags
;
8651 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
8653 /* Print normal ELF private data. */
8654 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
8656 flags
= elf_elfheader (abfd
)->e_flags
;
8657 /* Ignore init flag - it may not be set, despite the flags field
8658 containing valid data. */
8660 /* xgettext:c-format */
8661 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
8664 fprintf (file
, _("<Unrecognised flag bits set>"));
8671 /* Return true if we need copy relocation against EH. */
8674 need_copy_relocation_p (struct elf_aarch64_link_hash_entry
*eh
)
8676 struct elf_dyn_relocs
*p
;
8679 for (p
= eh
->root
.dyn_relocs
; p
!= NULL
; p
= p
->next
)
8681 /* If there is any pc-relative reference, we need to keep copy relocation
8682 to avoid propagating the relocation into runtime that current glibc
8683 does not support. */
8687 s
= p
->sec
->output_section
;
8688 /* Need copy relocation if it's against read-only section. */
8689 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8696 /* Adjust a symbol defined by a dynamic object and referenced by a
8697 regular object. The current definition is in some section of the
8698 dynamic object, but we're not including those sections. We have to
8699 change the definition to something the rest of the link can
8703 elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info
*info
,
8704 struct elf_link_hash_entry
*h
)
8706 struct elf_aarch64_link_hash_table
*htab
;
8709 /* If this is a function, put it in the procedure linkage table. We
8710 will fill in the contents of the procedure linkage table later,
8711 when we know the address of the .got section. */
8712 if (h
->type
== STT_FUNC
|| h
->type
== STT_GNU_IFUNC
|| h
->needs_plt
)
8714 if (h
->plt
.refcount
<= 0
8715 || (h
->type
!= STT_GNU_IFUNC
8716 && (SYMBOL_CALLS_LOCAL (info
, h
)
8717 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
8718 && h
->root
.type
== bfd_link_hash_undefweak
))))
8720 /* This case can occur if we saw a CALL26 reloc in
8721 an input file, but the symbol wasn't referred to
8722 by a dynamic object or all references were
8723 garbage collected. In which case we can end up
8725 h
->plt
.offset
= (bfd_vma
) - 1;
8732 /* Otherwise, reset to -1. */
8733 h
->plt
.offset
= (bfd_vma
) - 1;
8736 /* If this is a weak symbol, and there is a real definition, the
8737 processor independent code will have arranged for us to see the
8738 real definition first, and we can just use the same value. */
8739 if (h
->is_weakalias
)
8741 struct elf_link_hash_entry
*def
= weakdef (h
);
8742 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
8743 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
8744 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
8745 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
8746 h
->non_got_ref
= def
->non_got_ref
;
8750 /* If we are creating a shared library, we must presume that the
8751 only references to the symbol are via the global offset table.
8752 For such cases we need not do anything here; the relocations will
8753 be handled correctly by relocate_section. */
8754 if (bfd_link_pic (info
))
8757 /* If there are no references to this symbol that do not use the
8758 GOT, we don't need to generate a copy reloc. */
8759 if (!h
->non_got_ref
)
8762 /* If -z nocopyreloc was given, we won't generate them either. */
8763 if (info
->nocopyreloc
)
8769 if (ELIMINATE_COPY_RELOCS
)
8771 struct elf_aarch64_link_hash_entry
*eh
;
8772 /* If we don't find any dynamic relocs in read-only sections, then
8773 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
8774 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8775 if (!need_copy_relocation_p (eh
))
8782 /* We must allocate the symbol in our .dynbss section, which will
8783 become part of the .bss section of the executable. There will be
8784 an entry for this symbol in the .dynsym section. The dynamic
8785 object will contain position independent code, so all references
8786 from the dynamic object to this symbol will go through the global
8787 offset table. The dynamic linker will use the .dynsym entry to
8788 determine the address it must put in the global offset table, so
8789 both the dynamic object and the regular object will refer to the
8790 same memory location for the variable. */
8792 htab
= elf_aarch64_hash_table (info
);
8794 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
8795 to copy the initial value out of the dynamic object and into the
8796 runtime process image. */
8797 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
8799 s
= htab
->root
.sdynrelro
;
8800 srel
= htab
->root
.sreldynrelro
;
8804 s
= htab
->root
.sdynbss
;
8805 srel
= htab
->root
.srelbss
;
8807 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
8809 srel
->size
+= RELOC_SIZE (htab
);
8813 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
8818 elfNN_aarch64_allocate_local_symbols (bfd
*abfd
, unsigned number
)
8820 struct elf_aarch64_local_symbol
*locals
;
8821 locals
= elf_aarch64_locals (abfd
);
8824 locals
= (struct elf_aarch64_local_symbol
*)
8825 bfd_zalloc (abfd
, number
* sizeof (struct elf_aarch64_local_symbol
));
8828 elf_aarch64_locals (abfd
) = locals
;
8833 /* Initialise the .got section to hold the global offset table. */
8836 aarch64_elf_init_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
8838 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
8840 struct elf_aarch64_link_hash_table
*globals
= elf_aarch64_hash_table (info
);
8841 unsigned int align
= bed
->s
->log_file_align
+ globals
->c64_rel
;
8843 if (globals
->root
.sgot
!= NULL
)
8845 bfd_set_section_alignment (globals
->root
.srelgot
,
8846 bed
->s
->log_file_align
);
8847 bfd_set_section_alignment (globals
->root
.sgot
, align
);
8848 globals
->root
.sgot
->size
+= GOT_ENTRY_SIZE (globals
);
8851 /* Track capability initialisation for static non-PIE binaries. */
8852 if (bfd_link_executable (info
) && !bfd_link_pic (info
)
8853 && globals
->srelcaps
== NULL
)
8854 globals
->srelcaps
= globals
->root
.srelgot
;
8856 if (globals
->root
.igotplt
!= NULL
)
8857 bfd_set_section_alignment (globals
->root
.igotplt
, align
);
8859 s
= globals
->root
.sgot
;
8861 if (globals
->root
.sgotplt
!= NULL
)
8863 bfd_set_section_alignment (globals
->root
.sgotplt
, align
);
8864 s
= globals
->root
.sgotplt
;
8867 /* The first bit of the global offset table is the header. */
8869 s
->size
+= bed
->got_header_size (info
);
8872 /* Create the .got section to hold the global offset table. */
8875 aarch64_elf_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
8877 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
8880 struct elf_link_hash_entry
*h
;
8881 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
8883 /* This function may be called more than once. */
8884 if (htab
->sgot
!= NULL
)
8887 flags
= bed
->dynamic_sec_flags
;
8889 s
= bfd_make_section_anyway_with_flags (abfd
,
8890 (bed
->rela_plts_and_copies_p
8891 ? ".rela.got" : ".rel.got"),
8892 (bed
->dynamic_sec_flags
8898 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
8903 if (bed
->want_got_sym
)
8905 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
8906 (or .got.plt) section. We don't do this in the linker script
8907 because we don't want to define the symbol if we are not creating
8908 a global offset table. */
8909 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
,
8910 "_GLOBAL_OFFSET_TABLE_");
8911 elf_hash_table (info
)->hgot
= h
;
8916 if (bed
->want_got_plt
)
8918 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
8927 /* Look through the relocs for a section during the first phase. */
8930 elfNN_aarch64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
8931 asection
*sec
, const Elf_Internal_Rela
*relocs
)
8933 Elf_Internal_Shdr
*symtab_hdr
;
8934 struct elf_link_hash_entry
**sym_hashes
;
8935 const Elf_Internal_Rela
*rel
;
8936 const Elf_Internal_Rela
*rel_end
;
8939 struct elf_aarch64_link_hash_table
*htab
;
8941 if (bfd_link_relocatable (info
))
8944 BFD_ASSERT (is_aarch64_elf (abfd
));
8946 htab
= elf_aarch64_hash_table (info
);
8949 symtab_hdr
= &elf_symtab_hdr (abfd
);
8950 sym_hashes
= elf_sym_hashes (abfd
);
8952 bfd_elfNN_aarch64_init_maps (abfd
, info
);
8954 rel_end
= relocs
+ sec
->reloc_count
;
8955 for (rel
= relocs
; rel
< rel_end
; rel
++)
8957 struct elf_link_hash_entry
*h
;
8958 unsigned int r_symndx
, r_type
;
8959 bfd_reloc_code_real_type bfd_r_type
;
8960 Elf_Internal_Sym
*isym
;
8962 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
8963 r_type
= ELFNN_R_TYPE (rel
->r_info
);
8964 bfd_r_type
= elfNN_aarch64_bfd_reloc_from_type (abfd
, r_type
);
8966 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
8968 /* xgettext:c-format */
8969 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd
, r_symndx
);
8973 if (r_symndx
< symtab_hdr
->sh_info
)
8975 /* A local symbol. */
8976 isym
= bfd_sym_from_r_symndx (&htab
->root
.sym_cache
,
8981 /* Check relocation against local STT_GNU_IFUNC symbol. */
8982 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
8984 h
= elfNN_aarch64_get_local_sym_hash (htab
, abfd
, rel
,
8989 /* Fake a STT_GNU_IFUNC symbol. */
8990 h
->type
= STT_GNU_IFUNC
;
8993 h
->forced_local
= 1;
8994 h
->root
.type
= bfd_link_hash_defined
;
9001 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
9002 while (h
->root
.type
== bfd_link_hash_indirect
9003 || h
->root
.type
== bfd_link_hash_warning
)
9004 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9007 /* Ignore TLS relocations against weak undef symbols and warn about them.
9008 The behaviour of weak TLS variables is not well defined. Since making
9009 these well behaved is not a priority for Morello, we simply ignore
9010 TLS relocations against such symbols here to avoid the linker crashing
9011 on these and to enable making progress in other areas. */
9014 && IS_AARCH64_TLS_RELOC (bfd_r_type
)
9015 && h
->root
.type
== bfd_link_hash_undefweak
)
9017 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
9018 _bfd_error_handler (_("%pB(%pA+%#" PRIx64
"): ignoring TLS relocation "
9019 "%s against undef weak symbol %s"),
9021 (uint64_t) rel
->r_offset
,
9022 elfNN_aarch64_howto_table
[howto_index
].name
,
9023 h
->root
.root
.string
);
9027 /* Could be done earlier, if h were already available. */
9028 bfd_r_type
= aarch64_tls_transition (abfd
, info
, rel
, h
, r_symndx
);
9032 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
9033 This shows up in particular in an R_AARCH64_PREL64 in large model
9034 when calculating the pc-relative address to .got section which is
9035 used to initialize the gp register. */
9036 if (h
->root
.root
.string
9037 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
9039 if (htab
->root
.dynobj
== NULL
)
9040 htab
->root
.dynobj
= abfd
;
9042 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
9045 BFD_ASSERT (h
== htab
->root
.hgot
);
9048 /* Create the ifunc sections for static executables. If we
9049 never see an indirect function symbol nor we are building
9050 a static executable, those sections will be empty and
9051 won't appear in output. */
9057 case BFD_RELOC_MORELLO_CALL26
:
9058 case BFD_RELOC_MORELLO_JUMP26
:
9059 /* For dynamic symbols record caller information so that we can
9060 decide what kind of PLT stubs to emit. */
9062 elf_aarch64_hash_entry (h
)->got_type
= GOT_CAP
;
9065 case BFD_RELOC_AARCH64_ADD_LO12
:
9066 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
9067 case BFD_RELOC_MORELLO_ADR_GOT_PAGE
:
9068 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
9069 case BFD_RELOC_MORELLO_ADR_HI20_PCREL
:
9070 case BFD_RELOC_AARCH64_CALL26
:
9071 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
9072 case BFD_RELOC_AARCH64_JUMP26
:
9073 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
9074 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
9075 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
9076 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
9077 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
9078 case BFD_RELOC_MORELLO_LD128_GOT_LO12_NC
:
9079 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
9080 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
9081 case BFD_RELOC_AARCH64_NN
:
9082 if (htab
->root
.dynobj
== NULL
)
9083 htab
->root
.dynobj
= abfd
;
9084 if (!_bfd_elf_create_ifunc_sections (htab
->root
.dynobj
, info
))
9089 /* It is referenced by a non-shared object. */
9095 case BFD_RELOC_AARCH64_16
:
9097 case BFD_RELOC_AARCH64_32
:
9099 if (bfd_link_pic (info
) && (sec
->flags
& SEC_ALLOC
) != 0)
9102 /* This is an absolute symbol. It represents a value instead
9104 && (bfd_is_abs_symbol (&h
->root
)
9105 /* This is an undefined symbol. */
9106 || h
->root
.type
== bfd_link_hash_undefined
))
9109 /* For local symbols, defined global symbols in a non-ABS section,
9110 it is assumed that the value is an address. */
9111 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
9113 /* xgettext:c-format */
9114 (_("%pB: relocation %s against `%s' can not be used when making "
9116 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
9117 (h
) ? h
->root
.root
.string
: "a local symbol");
9118 bfd_set_error (bfd_error_bad_value
);
9124 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
9125 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
9126 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
9127 case BFD_RELOC_AARCH64_MOVW_G3
:
9128 if (bfd_link_pic (info
))
9130 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
9132 /* xgettext:c-format */
9133 (_("%pB: relocation %s against `%s' can not be used when making "
9134 "a shared object; recompile with -fPIC"),
9135 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
9136 (h
) ? h
->root
.root
.string
: "a local symbol");
9137 bfd_set_error (bfd_error_bad_value
);
9142 case BFD_RELOC_AARCH64_16_PCREL
:
9143 case BFD_RELOC_AARCH64_32_PCREL
:
9144 case BFD_RELOC_AARCH64_64_PCREL
:
9145 case BFD_RELOC_AARCH64_ADD_LO12
:
9146 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
9147 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
9148 case BFD_RELOC_MORELLO_ADR_HI20_NC_PCREL
:
9149 case BFD_RELOC_MORELLO_ADR_HI20_PCREL
:
9150 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
9151 case BFD_RELOC_AARCH64_LDST128_LO12
:
9152 case BFD_RELOC_AARCH64_LDST16_LO12
:
9153 case BFD_RELOC_AARCH64_LDST32_LO12
:
9154 case BFD_RELOC_AARCH64_LDST64_LO12
:
9155 case BFD_RELOC_AARCH64_LDST8_LO12
:
9156 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
9157 case BFD_RELOC_MORELLO_LD_LO17_PCREL
:
9158 if (h
== NULL
|| bfd_link_pic (info
))
9162 case BFD_RELOC_AARCH64_NN
:
9164 /* We don't need to handle relocs into sections not going into
9165 the "real" output. */
9166 if ((sec
->flags
& SEC_ALLOC
) == 0)
9171 if (!bfd_link_pic (info
))
9174 h
->plt
.refcount
+= 1;
9175 h
->pointer_equality_needed
= 1;
9178 /* No need to do anything if we're not creating a shared
9180 if (!(bfd_link_pic (info
)
9181 /* If on the other hand, we are creating an executable, we
9182 may need to keep relocations for symbols satisfied by a
9183 dynamic library if we manage to avoid copy relocs for the
9186 NOTE: Currently, there is no support of copy relocs
9187 elimination on pc-relative relocation types, because there is
9188 no dynamic relocation support for them in glibc. We still
9189 record the dynamic symbol reference for them. This is
9190 because one symbol may be referenced by both absolute
9191 relocation (for example, BFD_RELOC_AARCH64_NN) and
9192 pc-relative relocation. We need full symbol reference
9193 information to make correct decision later in
9194 elfNN_aarch64_adjust_dynamic_symbol. */
9195 || (ELIMINATE_COPY_RELOCS
9196 && !bfd_link_pic (info
)
9198 && (h
->root
.type
== bfd_link_hash_defweak
9199 || !h
->def_regular
))))
9203 struct elf_dyn_relocs
*p
;
9204 struct elf_dyn_relocs
**head
;
9205 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
9207 /* We must copy these reloc types into the output file.
9208 Create a reloc section in dynobj and make room for
9212 if (htab
->root
.dynobj
== NULL
)
9213 htab
->root
.dynobj
= abfd
;
9215 sreloc
= _bfd_elf_make_dynamic_reloc_section
9216 (sec
, htab
->root
.dynobj
, LOG_FILE_ALIGN
, abfd
, /*rela? */ TRUE
);
9222 /* If this is a global symbol, we count the number of
9223 relocations we need for this symbol. */
9226 head
= &h
->dyn_relocs
;
9230 /* Track dynamic relocs needed for local syms too.
9231 We really need local syms available to do this
9237 isym
= bfd_sym_from_r_symndx (&htab
->root
.sym_cache
,
9242 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
9246 /* Beware of type punned pointers vs strict aliasing
9248 vpp
= &(elf_section_data (s
)->local_dynrel
);
9249 head
= (struct elf_dyn_relocs
**) vpp
;
9253 if (p
== NULL
|| p
->sec
!= sec
)
9255 size_t amt
= sizeof *p
;
9256 p
= ((struct elf_dyn_relocs
*)
9257 bfd_zalloc (htab
->root
.dynobj
, amt
));
9267 if (elfNN_aarch64_howto_table
[howto_index
].pc_relative
)
9272 /* RR: We probably want to keep a consistency check that
9273 there are no dangling GOT_PAGE relocs. */
9274 case BFD_RELOC_MORELLO_ADR_GOT_PAGE
:
9275 case BFD_RELOC_MORELLO_LD128_GOT_LO12_NC
:
9276 case BFD_RELOC_MORELLO_TLSDESC_ADR_PAGE20
:
9277 case BFD_RELOC_MORELLO_TLSDESC_LD128_LO12
:
9281 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
9282 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
9283 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
9284 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
9285 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
9286 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
9287 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
9288 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
9289 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
9290 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
9291 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
9292 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
9293 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
9294 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
9295 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
9296 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
9297 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
9298 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
9299 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
9300 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
9301 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
9302 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
9303 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
9304 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
9305 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
9306 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
9307 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
9308 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
9309 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
9310 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
9311 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
9314 unsigned old_got_type
;
9316 got_type
= aarch64_reloc_got_type (bfd_r_type
);
9320 h
->got
.refcount
+= 1;
9321 old_got_type
= elf_aarch64_hash_entry (h
)->got_type
;
9325 struct elf_aarch64_local_symbol
*locals
;
9327 if (!elfNN_aarch64_allocate_local_symbols
9328 (abfd
, symtab_hdr
->sh_info
))
9331 locals
= elf_aarch64_locals (abfd
);
9332 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
9333 locals
[r_symndx
].got_refcount
+= 1;
9334 old_got_type
= locals
[r_symndx
].got_type
;
9337 /* If a variable is accessed with both general dynamic TLS
9338 methods, two slots may be created. */
9339 if (GOT_TLS_GD_ANY_P (old_got_type
) && GOT_TLS_GD_ANY_P (got_type
))
9340 got_type
|= old_got_type
;
9342 /* We will already have issued an error message if there
9343 is a TLS/non-TLS mismatch, based on the symbol type.
9344 So just combine any TLS types needed. */
9345 if (old_got_type
!= GOT_UNKNOWN
&& old_got_type
!= GOT_NORMAL
9346 && got_type
!= GOT_NORMAL
&& old_got_type
!= GOT_CAP
9347 && got_type
!= GOT_CAP
)
9348 got_type
|= old_got_type
;
9350 /* If the symbol is accessed by both IE and GD methods, we
9351 are able to relax. Turn off the GD flag, without
9352 messing up with any other kind of TLS types that may be
9354 if ((got_type
& GOT_TLS_IE
) && GOT_TLS_GD_ANY_P (got_type
))
9355 got_type
&= ~ (GOT_TLSDESC_GD
| GOT_TLS_GD
);
9357 /* Prefer the capability reference. */
9358 if ((old_got_type
& GOT_CAP
) && (got_type
& GOT_NORMAL
))
9360 got_type
&= ~GOT_NORMAL
;
9361 got_type
|= GOT_CAP
;
9364 if (old_got_type
!= got_type
)
9367 elf_aarch64_hash_entry (h
)->got_type
= got_type
;
9370 struct elf_aarch64_local_symbol
*locals
;
9371 locals
= elf_aarch64_locals (abfd
);
9372 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
9373 locals
[r_symndx
].got_type
= got_type
;
9377 if (htab
->root
.dynobj
== NULL
)
9378 htab
->root
.dynobj
= abfd
;
9379 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
9384 case BFD_RELOC_MORELLO_CALL26
:
9385 case BFD_RELOC_MORELLO_JUMP26
:
9388 elf_aarch64_hash_entry (h
)->got_type
= GOT_CAP
;
9391 case BFD_RELOC_AARCH64_CALL26
:
9392 case BFD_RELOC_AARCH64_JUMP26
:
9395 isym
= bfd_sym_from_r_symndx (&htab
->root
.sym_cache
, abfd
,
9400 asection
*s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
9405 if (c64_value_p (s
, isym
->st_value
))
9406 isym
->st_target_internal
|= ST_BRANCH_TO_C64
;
9408 /* If this is a local symbol then we resolve it
9409 directly without creating a PLT entry. */
9413 if (h
->root
.type
== bfd_link_hash_defined
9414 || h
->root
.type
== bfd_link_hash_defweak
)
9416 asection
*sym_sec
= h
->root
.u
.def
.section
;
9417 bfd_vma sym_value
= h
->root
.u
.def
.value
;
9419 if (sym_sec
!= NULL
&& c64_value_p (sym_sec
, sym_value
))
9420 h
->target_internal
|= ST_BRANCH_TO_C64
;
9424 if (h
->plt
.refcount
<= 0)
9425 h
->plt
.refcount
= 1;
9427 h
->plt
.refcount
+= 1;
9430 case BFD_RELOC_MORELLO_CAPINIT
:
9431 if (htab
->srelcaps
== NULL
)
9433 if (htab
->root
.dynobj
== NULL
)
9434 htab
->root
.dynobj
= abfd
;
9436 sreloc
= _bfd_elf_make_dynamic_reloc_section
9437 (sec
, htab
->root
.dynobj
, LOG_FILE_ALIGN
,
9438 abfd
, /*rela? */ TRUE
);
9443 htab
->srelcaps
= sreloc
;
9445 htab
->srelcaps
->size
+= RELOC_SIZE (htab
);
9457 /* Treat mapping symbols as special target symbols. */
9460 elfNN_aarch64_is_target_special_symbol (bfd
*abfd ATTRIBUTE_UNUSED
,
9463 return bfd_is_aarch64_special_symbol_name (sym
->name
,
9464 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
);
9467 /* If the ELF symbol SYM might be a function in SEC, return the
9468 function size and set *CODE_OFF to the function's entry point,
9469 otherwise return zero. */
9471 static bfd_size_type
9472 elfNN_aarch64_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
9477 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
9478 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0
9479 || sym
->section
!= sec
)
9482 if (!(sym
->flags
& BSF_SYNTHETIC
))
9483 switch (ELF_ST_TYPE (((elf_symbol_type
*) sym
)->internal_elf_sym
.st_info
))
9492 if ((sym
->flags
& BSF_LOCAL
)
9493 && bfd_is_aarch64_special_symbol_name (sym
->name
,
9494 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
))
9497 *code_off
= sym
->value
;
9499 if (!(sym
->flags
& BSF_SYNTHETIC
))
9500 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
9507 elfNN_aarch64_find_inliner_info (bfd
*abfd
,
9508 const char **filename_ptr
,
9509 const char **functionname_ptr
,
9510 unsigned int *line_ptr
)
9513 found
= _bfd_dwarf2_find_inliner_info
9514 (abfd
, filename_ptr
,
9515 functionname_ptr
, line_ptr
, &elf_tdata (abfd
)->dwarf2_find_line_info
);
9521 elfNN_aarch64_init_file_header (bfd
*abfd
, struct bfd_link_info
*link_info
)
9523 Elf_Internal_Ehdr
*i_ehdrp
; /* ELF file header, internal form. */
9525 if (!_bfd_elf_init_file_header (abfd
, link_info
))
9528 i_ehdrp
= elf_elfheader (abfd
);
9529 i_ehdrp
->e_ident
[EI_ABIVERSION
] = AARCH64_ELF_ABI_VERSION
;
9533 static enum elf_reloc_type_class
9534 elfNN_aarch64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
9535 const asection
*rel_sec ATTRIBUTE_UNUSED
,
9536 const Elf_Internal_Rela
*rela
)
9538 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
9540 if (htab
->root
.dynsym
!= NULL
9541 && htab
->root
.dynsym
->contents
!= NULL
)
9543 /* Check relocation against STT_GNU_IFUNC symbol if there are
9545 bfd
*abfd
= info
->output_bfd
;
9546 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
9547 unsigned long r_symndx
= ELFNN_R_SYM (rela
->r_info
);
9548 if (r_symndx
!= STN_UNDEF
)
9550 Elf_Internal_Sym sym
;
9551 if (!bed
->s
->swap_symbol_in (abfd
,
9552 (htab
->root
.dynsym
->contents
9553 + r_symndx
* bed
->s
->sizeof_sym
),
9556 /* xgettext:c-format */
9557 _bfd_error_handler (_("%pB symbol number %lu references"
9558 " nonexistent SHT_SYMTAB_SHNDX section"),
9560 /* Ideally an error class should be returned here. */
9562 else if (ELF_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
9563 return reloc_class_ifunc
;
9567 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
9569 case AARCH64_R (IRELATIVE
):
9570 case MORELLO_R (IRELATIVE
):
9571 return reloc_class_ifunc
;
9572 case AARCH64_R (RELATIVE
):
9573 case MORELLO_R (RELATIVE
):
9574 return reloc_class_relative
;
9575 case AARCH64_R (JUMP_SLOT
):
9576 case MORELLO_R (JUMP_SLOT
):
9577 return reloc_class_plt
;
9578 case AARCH64_R (COPY
):
9579 return reloc_class_copy
;
9581 return reloc_class_normal
;
9585 /* Handle an AArch64 specific section when reading an object file. This is
9586 called when bfd_section_from_shdr finds a section with an unknown
9590 elfNN_aarch64_section_from_shdr (bfd
*abfd
,
9591 Elf_Internal_Shdr
*hdr
,
9592 const char *name
, int shindex
)
9594 /* There ought to be a place to keep ELF backend specific flags, but
9595 at the moment there isn't one. We just keep track of the
9596 sections by their name, instead. Fortunately, the ABI gives
9597 names for all the AArch64 specific sections, so we will probably get
9599 switch (hdr
->sh_type
)
9601 case SHT_AARCH64_ATTRIBUTES
:
9608 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
9617 struct bfd_link_info
*info
;
9620 int (*func
) (void *, const char *, Elf_Internal_Sym
*,
9621 asection
*, struct elf_link_hash_entry
*);
9622 } output_arch_syminfo
;
9624 enum map_symbol_type
9632 /* Output a single mapping symbol. */
9635 elfNN_aarch64_output_map_sym (output_arch_syminfo
*osi
,
9636 enum map_symbol_type type
, bfd_vma offset
)
9638 static const char *names
[3] = { "$x", "$d", "$c" };
9639 Elf_Internal_Sym sym
;
9641 sym
.st_value
= (osi
->sec
->output_section
->vma
9642 + osi
->sec
->output_offset
+ offset
);
9645 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
9646 sym
.st_shndx
= osi
->sec_shndx
;
9647 sym
.st_target_internal
= 0;
9648 return osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
) == 1;
9651 /* Output a single local symbol for a generated stub. */
9654 elfNN_aarch64_output_stub_sym (output_arch_syminfo
*osi
, const char *name
,
9655 bfd_vma offset
, bfd_vma size
)
9657 Elf_Internal_Sym sym
;
9659 sym
.st_value
= (osi
->sec
->output_section
->vma
9660 + osi
->sec
->output_offset
+ offset
);
9663 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
9664 sym
.st_shndx
= osi
->sec_shndx
;
9665 sym
.st_target_internal
= 0;
9666 return osi
->func (osi
->finfo
, name
, &sym
, osi
->sec
, NULL
) == 1;
9670 aarch64_map_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9672 struct elf_aarch64_stub_hash_entry
*stub_entry
;
9676 output_arch_syminfo
*osi
;
9678 /* Massage our args to the form they really have. */
9679 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
9680 osi
= (output_arch_syminfo
*) in_arg
;
9682 stub_sec
= stub_entry
->stub_sec
;
9684 /* Ensure this stub is attached to the current section being
9686 if (stub_sec
!= osi
->sec
)
9689 addr
= (bfd_vma
) stub_entry
->stub_offset
;
9691 stub_name
= stub_entry
->output_name
;
9693 switch (stub_entry
->stub_type
)
9695 case aarch64_stub_adrp_branch
:
9696 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
9697 sizeof (aarch64_adrp_branch_stub
)))
9699 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
9702 case aarch64_stub_long_branch
:
9703 if (!elfNN_aarch64_output_stub_sym
9704 (osi
, stub_name
, addr
, sizeof (aarch64_long_branch_stub
)))
9706 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
9708 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_DATA
, addr
+ 16))
9711 case aarch64_stub_erratum_835769_veneer
:
9712 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
9713 sizeof (aarch64_erratum_835769_stub
)))
9715 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
9718 case aarch64_stub_erratum_843419_veneer
:
9719 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
9720 sizeof (aarch64_erratum_843419_stub
)))
9722 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
9725 case aarch64_stub_branch_c64
:
9726 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
9727 sizeof (aarch64_c64_branch_stub
)))
9729 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_C64
, addr
))
9732 case c64_stub_branch_aarch64
:
9733 case c64_stub_branch_c64
:
9734 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
9735 sizeof (c64_aarch64_branch_stub
)))
9737 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_C64
, addr
))
9740 case aarch64_stub_none
:
9750 /* Output mapping symbols for linker generated sections. */
9753 elfNN_aarch64_output_arch_local_syms (bfd
*output_bfd
,
9754 struct bfd_link_info
*info
,
9756 int (*func
) (void *, const char *,
9759 struct elf_link_hash_entry
9762 output_arch_syminfo osi
;
9763 struct elf_aarch64_link_hash_table
*htab
;
9765 htab
= elf_aarch64_hash_table (info
);
9771 /* Long calls stubs. */
9772 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
)
9776 for (stub_sec
= htab
->stub_bfd
->sections
;
9777 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
9779 /* Ignore non-stub sections. */
9780 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
9785 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
9786 (output_bfd
, osi
.sec
->output_section
);
9788 /* The first instruction in a stub is always a branch. */
9789 if (!elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0))
9792 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_map_one_stub
,
9797 /* Finally, output mapping symbols for the PLT. */
9798 if (!htab
->root
.splt
|| htab
->root
.splt
->size
== 0)
9801 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
9802 (output_bfd
, htab
->root
.splt
->output_section
);
9803 osi
.sec
= htab
->root
.splt
;
9805 elfNN_aarch64_output_map_sym (&osi
, (htab
->c64_rel
? AARCH64_MAP_C64
9806 : AARCH64_MAP_INSN
), 0);
9812 /* Allocate target specific section data. */
9815 elfNN_aarch64_new_section_hook (bfd
*abfd
, asection
*sec
)
9817 if (!sec
->used_by_bfd
)
9819 _aarch64_elf_section_data
*sdata
;
9820 size_t amt
= sizeof (*sdata
);
9822 sdata
= bfd_zalloc (abfd
, amt
);
9825 sdata
->elf
.is_target_section_data
= TRUE
;
9826 sec
->used_by_bfd
= sdata
;
9829 return _bfd_elf_new_section_hook (abfd
, sec
);
9833 /* Create dynamic sections. This is different from the ARM backend in that
9834 the got, plt, gotplt and their relocation sections are all created in the
9835 standard part of the bfd elf backend. */
9838 elfNN_aarch64_create_dynamic_sections (bfd
*dynobj
,
9839 struct bfd_link_info
*info
)
9841 /* We need to create .got section. */
9842 if (!aarch64_elf_create_got_section (dynobj
, info
))
9845 return _bfd_elf_create_dynamic_sections (dynobj
, info
);
9849 /* Allocate space in .plt, .got and associated reloc sections for
9853 elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
9855 struct bfd_link_info
*info
;
9856 struct elf_aarch64_link_hash_table
*htab
;
9857 struct elf_aarch64_link_hash_entry
*eh
;
9858 struct elf_dyn_relocs
*p
;
9860 /* An example of a bfd_link_hash_indirect symbol is versioned
9861 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
9862 -> __gxx_personality_v0(bfd_link_hash_defined)
9864 There is no need to process bfd_link_hash_indirect symbols here
9865 because we will also be presented with the concrete instance of
9866 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
9867 called to copy all relevant data from the generic to the concrete
9869 if (h
->root
.type
== bfd_link_hash_indirect
)
9872 if (h
->root
.type
== bfd_link_hash_warning
)
9873 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9875 info
= (struct bfd_link_info
*) inf
;
9876 htab
= elf_aarch64_hash_table (info
);
9878 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
9879 here if it is defined and referenced in a non-shared object. */
9880 if (h
->type
== STT_GNU_IFUNC
9883 else if (htab
->root
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
9885 /* Make sure this symbol is output as a dynamic symbol.
9886 Undefined weak syms won't yet be marked as dynamic. */
9887 if (h
->dynindx
== -1 && !h
->forced_local
9888 && h
->root
.type
== bfd_link_hash_undefweak
)
9890 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
9894 if (bfd_link_pic (info
) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
9896 asection
*s
= htab
->root
.splt
;
9898 /* If this is the first .plt entry, make room for the special
9901 s
->size
+= htab
->plt_header_size
;
9903 h
->plt
.offset
= s
->size
;
9905 /* If this symbol is not defined in a regular file, and we are
9906 not generating a shared library, then set the symbol to this
9907 location in the .plt. This is required to make function
9908 pointers compare as equal between the normal executable and
9909 the shared library. */
9910 if (!bfd_link_pic (info
) && !h
->def_regular
)
9912 h
->root
.u
.def
.section
= s
;
9913 h
->root
.u
.def
.value
= h
->plt
.offset
;
9916 /* Make room for this entry. For now we only create the
9917 small model PLT entries. We later need to find a way
9918 of relaxing into these from the large model PLT entries. */
9919 s
->size
+= htab
->plt_entry_size
;
9921 /* We also need to make an entry in the .got.plt section, which
9922 will be placed in the .got section by the linker script. */
9923 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE (htab
);
9925 /* We also need to make an entry in the .rela.plt section. */
9926 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
9928 /* We need to ensure that all GOT entries that serve the PLT
9929 are consecutive with the special GOT slots [0] [1] and
9930 [2]. Any addtional relocations, such as
9931 R_AARCH64_TLSDESC, must be placed after the PLT related
9932 entries. We abuse the reloc_count such that during
9933 sizing we adjust reloc_count to indicate the number of
9934 PLT related reserved entries. In subsequent phases when
9935 filling in the contents of the reloc entries, PLT related
9936 entries are placed by computing their PLT index (0
9937 .. reloc_count). While other none PLT relocs are placed
9938 at the slot indicated by reloc_count and reloc_count is
9941 htab
->root
.srelplt
->reloc_count
++;
9943 /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against
9944 variant PCS symbols are present. */
9945 if (h
->other
& STO_AARCH64_VARIANT_PCS
)
9946 htab
->variant_pcs
= 1;
9951 h
->plt
.offset
= (bfd_vma
) - 1;
9957 h
->plt
.offset
= (bfd_vma
) - 1;
9961 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
9962 eh
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
9964 if (h
->got
.refcount
> 0)
9967 unsigned got_type
= elf_aarch64_hash_entry (h
)->got_type
;
9969 h
->got
.offset
= (bfd_vma
) - 1;
9971 dyn
= htab
->root
.dynamic_sections_created
;
9973 /* Make sure this symbol is output as a dynamic symbol.
9974 Undefined weak syms won't yet be marked as dynamic. */
9975 if (dyn
&& h
->dynindx
== -1 && !h
->forced_local
9976 && h
->root
.type
== bfd_link_hash_undefweak
)
9978 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
9982 if (got_type
== GOT_UNKNOWN
)
9985 else if (got_type
== GOT_NORMAL
9986 || got_type
== GOT_CAP
)
9988 h
->got
.offset
= htab
->root
.sgot
->size
;
9989 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE (htab
);
9990 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9991 || h
->root
.type
!= bfd_link_hash_undefweak
)
9992 && (bfd_link_pic (info
)
9993 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
9994 /* Undefined weak symbol in static PIE resolves to 0 without
9995 any dynamic relocations. */
9996 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9998 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
10000 else if (bfd_link_executable (info
) && !bfd_link_pic (info
))
10001 htab
->srelcaps
->size
+= RELOC_SIZE (htab
);
10006 if (got_type
& GOT_TLSDESC_GD
)
10008 eh
->tlsdesc_got_jump_table_offset
=
10009 (htab
->root
.sgotplt
->size
10010 - aarch64_compute_jump_table_size (htab
));
10011 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE (htab
) * 2;
10012 h
->got
.offset
= (bfd_vma
) - 2;
10015 if (got_type
& GOT_TLS_GD
)
10017 h
->got
.offset
= htab
->root
.sgot
->size
;
10018 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE (htab
) * 2;
10021 if (got_type
& GOT_TLS_IE
)
10023 h
->got
.offset
= htab
->root
.sgot
->size
;
10024 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE (htab
);
10027 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
10028 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
10029 || h
->root
.type
!= bfd_link_hash_undefweak
)
10030 && (!bfd_link_executable (info
)
10032 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)
10033 /* On Morello support only TLSDESC_GD to TLSLE relaxation;
10034 for everything else we must emit a dynamic relocation. */
10035 || got_type
& GOT_CAP
))
10037 if (got_type
& GOT_TLSDESC_GD
)
10039 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
10040 /* Note reloc_count not incremented here! We have
10041 already adjusted reloc_count for this relocation
10044 /* TLSDESC PLT is now needed, but not yet determined. */
10045 htab
->root
.tlsdesc_plt
= (bfd_vma
) - 1;
10048 if (got_type
& GOT_TLS_GD
)
10049 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
10051 if (got_type
& GOT_TLS_IE
)
10052 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
10058 h
->got
.offset
= (bfd_vma
) - 1;
10061 if (h
->dyn_relocs
== NULL
)
10064 /* In the shared -Bsymbolic case, discard space allocated for
10065 dynamic pc-relative relocs against symbols which turn out to be
10066 defined in regular objects. For the normal shared case, discard
10067 space for pc-relative relocs that have become local due to symbol
10068 visibility changes. */
10070 if (bfd_link_pic (info
))
10072 /* Relocs that use pc_count are those that appear on a call
10073 insn, or certain REL relocs that can generated via assembly.
10074 We want calls to protected symbols to resolve directly to the
10075 function rather than going via the plt. If people want
10076 function pointer comparisons to work as expected then they
10077 should avoid writing weird assembly. */
10078 if (SYMBOL_CALLS_LOCAL (info
, h
))
10080 struct elf_dyn_relocs
**pp
;
10082 for (pp
= &h
->dyn_relocs
; (p
= *pp
) != NULL
;)
10084 p
->count
-= p
->pc_count
;
10093 /* Also discard relocs on undefined weak syms with non-default
10095 if (h
->dyn_relocs
!= NULL
&& h
->root
.type
== bfd_link_hash_undefweak
)
10097 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
10098 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
10099 h
->dyn_relocs
= NULL
;
10101 /* Make sure undefined weak symbols are output as a dynamic
10103 else if (h
->dynindx
== -1
10104 && !h
->forced_local
10105 && h
->root
.type
== bfd_link_hash_undefweak
10106 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
10111 else if (ELIMINATE_COPY_RELOCS
)
10113 /* For the non-shared case, discard space for relocs against
10114 symbols which turn out to need copy relocs or are not
10117 if (!h
->non_got_ref
10118 && ((h
->def_dynamic
10119 && !h
->def_regular
)
10120 || (htab
->root
.dynamic_sections_created
10121 && (h
->root
.type
== bfd_link_hash_undefweak
10122 || h
->root
.type
== bfd_link_hash_undefined
))))
10124 /* Make sure this symbol is output as a dynamic symbol.
10125 Undefined weak syms won't yet be marked as dynamic. */
10126 if (h
->dynindx
== -1
10127 && !h
->forced_local
10128 && h
->root
.type
== bfd_link_hash_undefweak
10129 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
10132 /* If that succeeded, we know we'll be keeping all the
10134 if (h
->dynindx
!= -1)
10138 h
->dyn_relocs
= NULL
;
10143 /* Finally, allocate space. */
10144 for (p
= h
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
10148 sreloc
= elf_section_data (p
->sec
)->sreloc
;
10150 BFD_ASSERT (sreloc
!= NULL
);
10152 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
10158 /* Allocate space in .plt, .got and associated reloc sections for
10159 ifunc dynamic relocs. */
10162 elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry
*h
,
10165 struct bfd_link_info
*info
;
10166 struct elf_aarch64_link_hash_table
*htab
;
10168 /* An example of a bfd_link_hash_indirect symbol is versioned
10169 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
10170 -> __gxx_personality_v0(bfd_link_hash_defined)
10172 There is no need to process bfd_link_hash_indirect symbols here
10173 because we will also be presented with the concrete instance of
10174 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
10175 called to copy all relevant data from the generic to the concrete
10176 symbol instance. */
10177 if (h
->root
.type
== bfd_link_hash_indirect
)
10180 if (h
->root
.type
== bfd_link_hash_warning
)
10181 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10183 info
= (struct bfd_link_info
*) inf
;
10184 htab
= elf_aarch64_hash_table (info
);
10186 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
10187 here if it is defined and referenced in a non-shared object. */
10188 if (h
->type
== STT_GNU_IFUNC
10190 return _bfd_elf_allocate_ifunc_dyn_relocs (info
, h
,
10192 htab
->plt_entry_size
,
10193 htab
->plt_header_size
,
10194 GOT_ENTRY_SIZE (htab
),
10199 /* Allocate space in .plt, .got and associated reloc sections for
10200 local ifunc dynamic relocs. */
10203 elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot
, void *inf
)
10205 struct elf_link_hash_entry
*h
10206 = (struct elf_link_hash_entry
*) *slot
;
10208 if (h
->type
!= STT_GNU_IFUNC
10211 || !h
->forced_local
10212 || h
->root
.type
!= bfd_link_hash_defined
)
10215 return elfNN_aarch64_allocate_ifunc_dynrelocs (h
, inf
);
10218 /* This is the most important function of all . Innocuosly named
10222 elfNN_aarch64_size_dynamic_sections (bfd
*output_bfd
,
10223 struct bfd_link_info
*info
)
10225 struct elf_aarch64_link_hash_table
*htab
;
10228 bfd_boolean relocs
;
10231 htab
= elf_aarch64_hash_table ((info
));
10232 dynobj
= htab
->root
.dynobj
;
10234 BFD_ASSERT (dynobj
!= NULL
);
10236 if (htab
->root
.dynamic_sections_created
)
10238 if (bfd_link_executable (info
) && !info
->nointerp
)
10240 s
= bfd_get_linker_section (dynobj
, ".interp");
10243 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
10244 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10248 aarch64_elf_init_got_section (output_bfd
, info
);
10250 setup_plt_values (info
, elf_aarch64_tdata (output_bfd
)->plt_type
);
10252 /* Set up .got offsets for local syms, and space for local dynamic
10254 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10256 struct elf_aarch64_local_symbol
*locals
= NULL
;
10257 Elf_Internal_Shdr
*symtab_hdr
;
10261 if (!is_aarch64_elf (ibfd
))
10264 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10266 struct elf_dyn_relocs
*p
;
10268 for (p
= (struct elf_dyn_relocs
*)
10269 (elf_section_data (s
)->local_dynrel
); p
!= NULL
; p
= p
->next
)
10271 if (!bfd_is_abs_section (p
->sec
)
10272 && bfd_is_abs_section (p
->sec
->output_section
))
10274 /* Input section has been discarded, either because
10275 it is a copy of a linkonce section or due to
10276 linker script /DISCARD/, so we'll be discarding
10279 else if (p
->count
!= 0)
10281 srel
= elf_section_data (p
->sec
)->sreloc
;
10282 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
10283 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
10284 info
->flags
|= DF_TEXTREL
;
10289 locals
= elf_aarch64_locals (ibfd
);
10293 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10294 srel
= htab
->root
.srelgot
;
10295 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
10297 locals
[i
].got_offset
= (bfd_vma
) - 1;
10298 locals
[i
].tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
10299 if (locals
[i
].got_refcount
> 0)
10301 unsigned got_type
= locals
[i
].got_type
;
10302 if (got_type
& GOT_TLSDESC_GD
)
10304 locals
[i
].tlsdesc_got_jump_table_offset
=
10305 (htab
->root
.sgotplt
->size
10306 - aarch64_compute_jump_table_size (htab
));
10307 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE (htab
) * 2;
10308 locals
[i
].got_offset
= (bfd_vma
) - 2;
10311 if (got_type
& GOT_TLS_GD
)
10313 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
10314 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE (htab
) * 2;
10317 if (got_type
& GOT_TLS_IE
10318 || got_type
& GOT_NORMAL
10319 || got_type
& GOT_CAP
)
10321 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
10322 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE (htab
);
10325 if (got_type
== GOT_UNKNOWN
)
10329 if (bfd_link_pic (info
))
10331 if (got_type
& GOT_TLSDESC_GD
)
10333 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
10334 /* Note RELOC_COUNT not incremented here! */
10335 htab
->root
.tlsdesc_plt
= (bfd_vma
) - 1;
10338 if (got_type
& GOT_TLS_GD
)
10339 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
10341 if (got_type
& GOT_TLS_IE
10342 || got_type
& GOT_NORMAL
10343 || got_type
& GOT_CAP
)
10344 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
10346 /* Static binary; put relocs into srelcaps. */
10347 else if (bfd_link_executable (info
) && (got_type
& GOT_CAP
))
10348 htab
->srelcaps
->size
+= RELOC_SIZE (htab
);
10352 locals
[i
].got_refcount
= (bfd_vma
) - 1;
10358 /* Allocate global sym .plt and .got entries, and space for global
10359 sym dynamic relocs. */
10360 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_dynrelocs
,
10363 /* Allocate global ifunc sym .plt and .got entries, and space for global
10364 ifunc sym dynamic relocs. */
10365 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_ifunc_dynrelocs
,
10368 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
10369 htab_traverse (htab
->loc_hash_table
,
10370 elfNN_aarch64_allocate_local_ifunc_dynrelocs
,
10373 if (bfd_link_executable (info
)
10374 && !bfd_link_pic (info
)
10376 && htab
->srelcaps
->size
> 0)
10378 struct elf_link_hash_entry
*h
;
10380 h
= _bfd_elf_define_linkage_sym (output_bfd
, info
,
10382 "__rela_dyn_start");
10383 h
= _bfd_elf_define_linkage_sym (output_bfd
, info
,
10387 h
->root
.u
.def
.value
= htab
->srelcaps
->vma
+ htab
->srelcaps
->size
;
10390 /* For every jump slot reserved in the sgotplt, reloc_count is
10391 incremented. However, when we reserve space for TLS descriptors,
10392 it's not incremented, so in order to compute the space reserved
10393 for them, it suffices to multiply the reloc count by the jump
10396 if (htab
->root
.srelplt
)
10397 htab
->sgotplt_jump_table_size
= aarch64_compute_jump_table_size (htab
);
10399 if (htab
->root
.tlsdesc_plt
)
10401 if (htab
->root
.splt
->size
== 0)
10402 htab
->root
.splt
->size
+= htab
->plt_header_size
;
10404 /* If we're not using lazy TLS relocations, don't generate the
10405 GOT and PLT entry required. */
10406 if ((info
->flags
& DF_BIND_NOW
))
10407 htab
->root
.tlsdesc_plt
= 0;
10410 htab
->root
.tlsdesc_plt
= htab
->root
.splt
->size
;
10411 htab
->root
.splt
->size
+= htab
->tlsdesc_plt_entry_size
;
10413 htab
->root
.tlsdesc_got
= htab
->root
.sgot
->size
;
10414 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE (htab
);
10418 /* Init mapping symbols information to use later to distingush between
10419 code and data while scanning for errata. */
10420 if (htab
->fix_erratum_835769
|| htab
->fix_erratum_843419
)
10421 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
10423 if (!is_aarch64_elf (ibfd
))
10425 bfd_elfNN_aarch64_init_maps (ibfd
, info
);
10428 /* We now have determined the sizes of the various dynamic sections.
10429 Allocate memory for them. */
10431 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10433 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10436 if (s
== htab
->root
.splt
10437 || s
== htab
->root
.sgot
10438 || s
== htab
->root
.sgotplt
10439 || s
== htab
->root
.iplt
10440 || s
== htab
->root
.igotplt
10441 || s
== htab
->root
.sdynbss
10442 || s
== htab
->root
.sdynrelro
)
10444 /* Strip this section if we don't need it; see the
10447 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
10449 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
10452 /* We use the reloc_count field as a counter if we need
10453 to copy relocs into the output file. */
10454 if (s
!= htab
->root
.srelplt
)
10455 s
->reloc_count
= 0;
10459 /* It's not one of our sections, so don't allocate space. */
10465 /* If we don't need this section, strip it from the
10466 output file. This is mostly to handle .rela.bss and
10467 .rela.plt. We must create both sections in
10468 create_dynamic_sections, because they must be created
10469 before the linker maps input sections to output
10470 sections. The linker does that before
10471 adjust_dynamic_symbol is called, and it is that
10472 function which decides whether anything needs to go
10473 into these sections. */
10474 s
->flags
|= SEC_EXCLUDE
;
10478 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10481 /* Allocate memory for the section contents. We use bfd_zalloc
10482 here in case unused entries are not reclaimed before the
10483 section's contents are written out. This should not happen,
10484 but this way if it does, we get a R_AARCH64_NONE reloc instead
10486 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
10487 if (s
->contents
== NULL
)
10491 if (htab
->root
.dynamic_sections_created
)
10493 /* Add some entries to the .dynamic section. We fill in the
10494 values later, in elfNN_aarch64_finish_dynamic_sections, but we
10495 must add the entries now so that we get the correct size for
10496 the .dynamic section. The DT_DEBUG entry is filled in by the
10497 dynamic linker and used by the debugger. */
10498 #define add_dynamic_entry(TAG, VAL) \
10499 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10501 if (!_bfd_elf_add_dynamic_tags (output_bfd
, info
, relocs
))
10504 if (htab
->root
.splt
->size
!= 0)
10506 if (htab
->variant_pcs
10507 && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS
, 0))
10510 if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_BTI_PAC
)
10511 && (!add_dynamic_entry (DT_AARCH64_BTI_PLT
, 0)
10512 || !add_dynamic_entry (DT_AARCH64_PAC_PLT
, 0)))
10515 else if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_BTI
)
10516 && !add_dynamic_entry (DT_AARCH64_BTI_PLT
, 0))
10519 else if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_PAC
)
10520 && !add_dynamic_entry (DT_AARCH64_PAC_PLT
, 0))
10524 #undef add_dynamic_entry
10530 elf_aarch64_update_plt_entry (bfd
*output_bfd
,
10531 bfd_reloc_code_real_type r_type
,
10532 bfd_byte
*plt_entry
, bfd_vma value
)
10534 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (r_type
);
10536 /* FIXME: We should check the return value from this function call. */
10537 (void) _bfd_aarch64_elf_put_addend (output_bfd
, plt_entry
, r_type
, howto
, value
);
10541 aarch64_update_c64_plt_entry (bfd
*output_bfd
, bfd_byte
*plt_entry
,
10542 bfd_vma plt_base
, bfd_vma plt_got_ent
)
10544 /* Fill in the top 20 bits for this: ADRP c16, PLT_GOT + n * 16.
10545 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0xfffff */
10546 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_MORELLO_ADR_HI20_PCREL
,
10548 PG (plt_got_ent
) - PG (plt_base
));
10550 elf_aarch64_update_plt_entry (output_bfd
,
10551 BFD_RELOC_AARCH64_LDST128_LO12
,
10553 PG_OFFSET (plt_got_ent
));
10555 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
10557 PG_OFFSET (plt_got_ent
));
10561 elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry
*h
,
10562 struct elf_aarch64_link_hash_table
10563 *htab
, bfd
*output_bfd
,
10564 struct bfd_link_info
*info
)
10566 bfd_byte
*plt_entry
;
10568 bfd_vma got_offset
;
10569 bfd_vma gotplt_entry_address
;
10570 bfd_vma plt_entry_address
;
10571 Elf_Internal_Rela rela
;
10573 asection
*plt
, *gotplt
, *relplt
;
10575 /* When building a static executable, use .iplt, .igot.plt and
10576 .rela.iplt sections for STT_GNU_IFUNC symbols. */
10577 if (htab
->root
.splt
!= NULL
)
10579 plt
= htab
->root
.splt
;
10580 gotplt
= htab
->root
.sgotplt
;
10581 relplt
= htab
->root
.srelplt
;
10585 plt
= htab
->root
.iplt
;
10586 gotplt
= htab
->root
.igotplt
;
10587 relplt
= htab
->root
.irelplt
;
10590 /* Get the index in the procedure linkage table which
10591 corresponds to this symbol. This is the index of this symbol
10592 in all the symbols for which we are making plt entries. The
10593 first entry in the procedure linkage table is reserved.
10595 Get the offset into the .got table of the entry that
10596 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
10597 bytes. The first three are reserved for the dynamic linker.
10599 For static executables, we don't reserve anything. */
10601 if (plt
== htab
->root
.splt
)
10603 plt_index
= (h
->plt
.offset
- htab
->plt_header_size
) / htab
->plt_entry_size
;
10604 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE (htab
);
10608 plt_index
= h
->plt
.offset
/ htab
->plt_entry_size
;
10609 got_offset
= plt_index
* GOT_ENTRY_SIZE (htab
);
10612 plt_entry
= plt
->contents
+ h
->plt
.offset
;
10613 plt_entry_address
= plt
->output_section
->vma
10614 + plt
->output_offset
+ h
->plt
.offset
;
10615 gotplt_entry_address
= gotplt
->output_section
->vma
+
10616 gotplt
->output_offset
+ got_offset
;
10618 /* Copy in the boiler-plate for the PLTn entry. */
10619 memcpy (plt_entry
, htab
->plt_entry
, htab
->plt_entry_size
);
10622 aarch64_update_c64_plt_entry (output_bfd
, plt_entry
, plt_entry_address
,
10623 gotplt_entry_address
);
10627 /* First instruction in BTI enabled PLT stub is a BTI
10628 instruction so skip it. */
10629 if (elf_aarch64_tdata (output_bfd
)->plt_type
& PLT_BTI
10630 && elf_elfheader (output_bfd
)->e_type
== ET_EXEC
)
10631 plt_entry
= plt_entry
+ 4;
10633 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
10634 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
10635 elf_aarch64_update_plt_entry (output_bfd
,
10636 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
10638 PG (gotplt_entry_address
) -
10639 PG (plt_entry_address
));
10641 /* Fill in the lo12 bits for the load from the pltgot. */
10642 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
10644 PG_OFFSET (gotplt_entry_address
));
10646 /* Fill in the lo12 bits for the add from the pltgot entry. */
10647 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
10649 PG_OFFSET (gotplt_entry_address
));
10652 /* All the GOTPLT Entries are essentially initialized to PLT0. Set LSB if
10654 bfd_vma plt0
= ((plt
->output_section
->vma
+ plt
->output_offset
)
10656 bfd_put_NN (output_bfd
, plt0
, gotplt
->contents
+ got_offset
);
10658 rela
.r_offset
= gotplt_entry_address
;
10660 if (h
->dynindx
== -1
10661 || ((bfd_link_executable (info
)
10662 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
10664 && h
->type
== STT_GNU_IFUNC
))
10666 /* If an STT_GNU_IFUNC symbol is locally defined, generate
10667 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
10668 rela
.r_info
= (elf_aarch64_hash_entry (h
)->got_type
== GOT_CAP
10669 ? ELFNN_R_INFO (0, MORELLO_R (IRELATIVE
))
10670 : ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
)));
10671 rela
.r_addend
= (h
->root
.u
.def
.value
10672 + h
->root
.u
.def
.section
->output_section
->vma
10673 + h
->root
.u
.def
.section
->output_offset
);
10677 /* Fill in the entry in the .rela.plt section. */
10678 rela
.r_info
= (elf_aarch64_hash_entry (h
)->got_type
== GOT_CAP
10679 ? ELFNN_R_INFO (h
->dynindx
, MORELLO_R (JUMP_SLOT
))
10680 : ELFNN_R_INFO (h
->dynindx
, AARCH64_R (JUMP_SLOT
)));
10684 /* Compute the relocation entry to used based on PLT index and do
10685 not adjust reloc_count. The reloc_count has already been adjusted
10686 to account for this entry. */
10687 loc
= relplt
->contents
+ plt_index
* RELOC_SIZE (htab
);
10688 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
10691 /* Size sections even though they're not dynamic. We use it to setup
10692 _TLS_MODULE_BASE_, if needed. */
10695 elfNN_aarch64_always_size_sections (bfd
*output_bfd
,
10696 struct bfd_link_info
*info
)
10700 if (bfd_link_relocatable (info
))
10703 tls_sec
= elf_hash_table (info
)->tls_sec
;
10707 struct elf_link_hash_entry
*tlsbase
;
10709 tlsbase
= elf_link_hash_lookup (elf_hash_table (info
),
10710 "_TLS_MODULE_BASE_", TRUE
, TRUE
, FALSE
);
10714 struct bfd_link_hash_entry
*h
= NULL
;
10715 const struct elf_backend_data
*bed
=
10716 get_elf_backend_data (output_bfd
);
10718 if (!(_bfd_generic_link_add_one_symbol
10719 (info
, output_bfd
, "_TLS_MODULE_BASE_", BSF_LOCAL
,
10720 tls_sec
, 0, NULL
, FALSE
, bed
->collect
, &h
)))
10723 tlsbase
->type
= STT_TLS
;
10724 tlsbase
= (struct elf_link_hash_entry
*) h
;
10725 tlsbase
->def_regular
= 1;
10726 tlsbase
->other
= STV_HIDDEN
;
10727 (*bed
->elf_backend_hide_symbol
) (info
, tlsbase
, TRUE
);
10734 /* Finish up dynamic symbol handling. We set the contents of various
10735 dynamic sections here. */
10738 elfNN_aarch64_finish_dynamic_symbol (bfd
*output_bfd
,
10739 struct bfd_link_info
*info
,
10740 struct elf_link_hash_entry
*h
,
10741 Elf_Internal_Sym
*sym
)
10743 struct elf_aarch64_link_hash_table
*htab
;
10744 htab
= elf_aarch64_hash_table (info
);
10746 if (h
->plt
.offset
!= (bfd_vma
) - 1)
10748 asection
*plt
, *gotplt
, *relplt
;
10750 /* This symbol has an entry in the procedure linkage table. Set
10753 /* When building a static executable, use .iplt, .igot.plt and
10754 .rela.iplt sections for STT_GNU_IFUNC symbols. */
10755 if (htab
->root
.splt
!= NULL
)
10757 plt
= htab
->root
.splt
;
10758 gotplt
= htab
->root
.sgotplt
;
10759 relplt
= htab
->root
.srelplt
;
10763 plt
= htab
->root
.iplt
;
10764 gotplt
= htab
->root
.igotplt
;
10765 relplt
= htab
->root
.irelplt
;
10768 /* This symbol has an entry in the procedure linkage table. Set
10770 if ((h
->dynindx
== -1
10771 && !((h
->forced_local
|| bfd_link_executable (info
))
10773 && h
->type
== STT_GNU_IFUNC
))
10779 elfNN_aarch64_create_small_pltn_entry (h
, htab
, output_bfd
, info
);
10780 if (!h
->def_regular
)
10782 /* Mark the symbol as undefined, rather than as defined in
10783 the .plt section. */
10784 sym
->st_shndx
= SHN_UNDEF
;
10785 /* If the symbol is weak we need to clear the value.
10786 Otherwise, the PLT entry would provide a definition for
10787 the symbol even if the symbol wasn't defined anywhere,
10788 and so the symbol would never be NULL. Leave the value if
10789 there were any relocations where pointer equality matters
10790 (this is a clue for the dynamic linker, to make function
10791 pointer comparisons work between an application and shared
10793 if (!h
->ref_regular_nonweak
|| !h
->pointer_equality_needed
)
10798 bfd_boolean is_c64
= elf_aarch64_hash_entry (h
)->got_type
== GOT_CAP
;
10800 if (h
->got
.offset
!= (bfd_vma
) - 1
10801 && (elf_aarch64_hash_entry (h
)->got_type
== GOT_NORMAL
10802 || elf_aarch64_hash_entry (h
)->got_type
== GOT_CAP
)
10803 /* Undefined weak symbol in static PIE resolves to 0 without
10804 any dynamic relocations. */
10805 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
10807 Elf_Internal_Rela rela
;
10810 /* This symbol has an entry in the global offset table. Set it
10812 if (htab
->root
.sgot
== NULL
|| htab
->root
.srelgot
== NULL
)
10815 rela
.r_offset
= (htab
->root
.sgot
->output_section
->vma
10816 + htab
->root
.sgot
->output_offset
10817 + (h
->got
.offset
& ~(bfd_vma
) 1));
10820 && h
->type
== STT_GNU_IFUNC
)
10822 if (bfd_link_pic (info
))
10824 /* Generate R_AARCH64_GLOB_DAT. */
10831 if (!h
->pointer_equality_needed
)
10834 /* For non-shared object, we can't use .got.plt, which
10835 contains the real function address if we need pointer
10836 equality. We load the GOT entry with the PLT entry. */
10837 plt
= htab
->root
.splt
? htab
->root
.splt
: htab
->root
.iplt
;
10838 bfd_put_NN (output_bfd
, (plt
->output_section
->vma
10839 + plt
->output_offset
10841 htab
->root
.sgot
->contents
10842 + (h
->got
.offset
& ~(bfd_vma
) 1));
10846 else if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
10848 if (!(h
->def_regular
|| ELF_COMMON_DEF_P (h
)))
10851 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
10854 rela
.r_info
= ELFNN_R_INFO (0, MORELLO_R (RELATIVE
));
10859 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
10860 rela
.r_addend
= (h
->root
.u
.def
.value
10861 + h
->root
.u
.def
.section
->output_section
->vma
10862 + h
->root
.u
.def
.section
->output_offset
);
10868 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
10869 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
10870 htab
->root
.sgot
->contents
+ h
->got
.offset
);
10871 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
,
10872 (is_c64
? MORELLO_R (GLOB_DAT
)
10873 : AARCH64_R (GLOB_DAT
)));
10877 loc
= htab
->root
.srelgot
->contents
;
10878 loc
+= htab
->root
.srelgot
->reloc_count
++ * RELOC_SIZE (htab
);
10879 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
10884 Elf_Internal_Rela rela
;
10888 /* This symbol needs a copy reloc. Set it up. */
10889 if (h
->dynindx
== -1
10890 || (h
->root
.type
!= bfd_link_hash_defined
10891 && h
->root
.type
!= bfd_link_hash_defweak
)
10892 || htab
->root
.srelbss
== NULL
)
10895 rela
.r_offset
= (h
->root
.u
.def
.value
10896 + h
->root
.u
.def
.section
->output_section
->vma
10897 + h
->root
.u
.def
.section
->output_offset
);
10898 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (COPY
));
10900 if (h
->root
.u
.def
.section
== htab
->root
.sdynrelro
)
10901 s
= htab
->root
.sreldynrelro
;
10903 s
= htab
->root
.srelbss
;
10904 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
10905 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
10908 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
10909 be NULL for local symbols. */
10911 && (h
== elf_hash_table (info
)->hdynamic
10912 || h
== elf_hash_table (info
)->hgot
))
10913 sym
->st_shndx
= SHN_ABS
;
10918 /* Finish up local dynamic symbol handling. We set the contents of
10919 various dynamic sections here. */
10922 elfNN_aarch64_finish_local_dynamic_symbol (void **slot
, void *inf
)
10924 struct elf_link_hash_entry
*h
10925 = (struct elf_link_hash_entry
*) *slot
;
10926 struct bfd_link_info
*info
10927 = (struct bfd_link_info
*) inf
;
10929 return elfNN_aarch64_finish_dynamic_symbol (info
->output_bfd
,
10934 elfNN_aarch64_init_small_plt0_entry (bfd
*output_bfd ATTRIBUTE_UNUSED
,
10935 struct elf_aarch64_link_hash_table
10938 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
10939 small and large plts and at the minute just generates
10942 /* PLT0 of the small PLT looks like this in ELF64 -
10943 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
10944 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
10945 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
10947 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
10948 // GOTPLT entry for this.
10950 PLT0 will be slightly different in ELF32 due to different got entry
10952 bfd_vma plt_got_2nd_ent
; /* Address of GOT[2]. */
10956 memcpy (htab
->root
.splt
->contents
, htab
->plt0_entry
,
10957 htab
->plt_header_size
);
10959 /* PR 26312: Explicitly set the sh_entsize to 0 so that
10960 consumers do not think that the section contains fixed
10962 elf_section_data (htab
->root
.splt
->output_section
)->this_hdr
.sh_entsize
= 0;
10964 plt_got_2nd_ent
= (htab
->root
.sgotplt
->output_section
->vma
10965 + htab
->root
.sgotplt
->output_offset
10966 + GOT_ENTRY_SIZE (htab
) * 2);
10968 plt_base
= htab
->root
.splt
->output_section
->vma
+
10969 htab
->root
.splt
->output_offset
;
10971 bfd_byte
*plt0_entry
= htab
->root
.splt
->contents
;
10975 aarch64_update_c64_plt_entry (output_bfd
, plt0_entry
+ 4,
10976 plt_base
+ 4, plt_got_2nd_ent
);
10980 /* First instruction in BTI enabled PLT stub is a BTI
10981 instruction so skip it. */
10982 if (elf_aarch64_tdata (output_bfd
)->plt_type
& PLT_BTI
)
10983 plt0_entry
= plt0_entry
+ 4;
10985 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
10986 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
10987 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
10989 PG (plt_got_2nd_ent
) - PG (plt_base
+ 4));
10991 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
10993 PG_OFFSET (plt_got_2nd_ent
));
10995 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
10997 PG_OFFSET (plt_got_2nd_ent
));
11001 elfNN_aarch64_finish_dynamic_sections (bfd
*output_bfd
,
11002 struct bfd_link_info
*info
)
11004 struct elf_aarch64_link_hash_table
*htab
;
11008 htab
= elf_aarch64_hash_table (info
);
11009 dynobj
= htab
->root
.dynobj
;
11010 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
11012 if (htab
->root
.dynamic_sections_created
)
11014 ElfNN_External_Dyn
*dyncon
, *dynconend
;
11016 if (sdyn
== NULL
|| htab
->root
.sgot
== NULL
)
11019 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
11020 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
11021 for (; dyncon
< dynconend
; dyncon
++)
11023 Elf_Internal_Dyn dyn
;
11026 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
11034 s
= htab
->root
.sgotplt
;
11035 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11039 s
= htab
->root
.srelplt
;
11040 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11044 s
= htab
->root
.srelplt
;
11045 dyn
.d_un
.d_val
= s
->size
;
11048 case DT_TLSDESC_PLT
:
11049 s
= htab
->root
.splt
;
11050 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
11051 + htab
->root
.tlsdesc_plt
;
11054 case DT_TLSDESC_GOT
:
11055 s
= htab
->root
.sgot
;
11056 BFD_ASSERT (htab
->root
.tlsdesc_got
!= (bfd_vma
)-1);
11057 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
11058 + htab
->root
.tlsdesc_got
;
11062 bfd_elfNN_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11067 /* Fill in the special first entry in the procedure linkage table. */
11068 if (htab
->root
.splt
&& htab
->root
.splt
->size
> 0)
11070 elfNN_aarch64_init_small_plt0_entry (output_bfd
, htab
);
11072 if (htab
->root
.tlsdesc_plt
&& !(info
->flags
& DF_BIND_NOW
))
11074 BFD_ASSERT (htab
->root
.tlsdesc_got
!= (bfd_vma
)-1);
11075 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
11076 htab
->root
.sgot
->contents
+ htab
->root
.tlsdesc_got
);
11078 const bfd_byte
*entry
= elfNN_aarch64_tlsdesc_small_plt_entry
;
11079 htab
->tlsdesc_plt_entry_size
= PLT_TLSDESC_ENTRY_SIZE
;
11081 unsigned adrp_rtype
= BFD_RELOC_AARCH64_ADR_HI21_PCREL
;
11082 unsigned ldr_rtype
= BFD_RELOC_AARCH64_LDSTNN_LO12
;
11084 aarch64_plt_type type
= elf_aarch64_tdata (output_bfd
)->plt_type
;
11087 entry
= elfNN_aarch64_tlsdesc_small_plt_c64_entry
;
11088 adrp_rtype
= BFD_RELOC_MORELLO_ADR_HI20_PCREL
;
11089 ldr_rtype
= BFD_RELOC_AARCH64_LDST128_LO12
;
11091 else if (type
== PLT_BTI
|| type
== PLT_BTI_PAC
)
11093 entry
= elfNN_aarch64_tlsdesc_small_plt_bti_entry
;
11096 memcpy (htab
->root
.splt
->contents
+ htab
->root
.tlsdesc_plt
,
11097 entry
, htab
->tlsdesc_plt_entry_size
);
11100 bfd_vma adrp1_addr
=
11101 htab
->root
.splt
->output_section
->vma
11102 + htab
->root
.splt
->output_offset
11103 + htab
->root
.tlsdesc_plt
+ 4;
11105 bfd_vma adrp2_addr
= adrp1_addr
+ 4;
11108 htab
->root
.sgot
->output_section
->vma
11109 + htab
->root
.sgot
->output_offset
;
11111 bfd_vma pltgot_addr
=
11112 htab
->root
.sgotplt
->output_section
->vma
11113 + htab
->root
.sgotplt
->output_offset
;
11115 bfd_vma dt_tlsdesc_got
= got_addr
+ htab
->root
.tlsdesc_got
;
11117 bfd_byte
*plt_entry
=
11118 htab
->root
.splt
->contents
+ htab
->root
.tlsdesc_plt
;
11120 /* First instruction in BTI enabled PLT stub is a BTI
11121 instruction so skip it. */
11122 if (type
& PLT_BTI
)
11124 plt_entry
= plt_entry
+ 4;
11125 adrp1_addr
= adrp1_addr
+ 4;
11126 adrp2_addr
= adrp2_addr
+ 4;
11129 /* adrp x2, DT_TLSDESC_GOT */
11130 elf_aarch64_update_plt_entry (output_bfd
,
11133 (PG (dt_tlsdesc_got
)
11134 - PG (adrp1_addr
)));
11137 elf_aarch64_update_plt_entry (output_bfd
,
11141 - PG (adrp2_addr
)));
11143 /* ldr x2, [x2, #0] */
11144 elf_aarch64_update_plt_entry (output_bfd
,
11147 PG_OFFSET (dt_tlsdesc_got
));
11149 /* add x3, x3, 0 */
11150 elf_aarch64_update_plt_entry (output_bfd
,
11151 BFD_RELOC_AARCH64_ADD_LO12
,
11153 PG_OFFSET (pltgot_addr
));
11158 if (htab
->root
.sgotplt
)
11160 if (bfd_is_abs_section (htab
->root
.sgotplt
->output_section
))
11163 (_("discarded output section: `%pA'"), htab
->root
.sgotplt
);
11167 /* Fill in the first three entries in the global offset table. */
11168 if (htab
->root
.sgotplt
->size
> 0)
11170 bfd_put_NN (output_bfd
, (bfd_vma
) 0, htab
->root
.sgotplt
->contents
);
11172 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
11173 bfd_put_NN (output_bfd
,
11175 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE (htab
));
11176 bfd_put_NN (output_bfd
,
11178 (htab
->root
.sgotplt
->contents
11179 + GOT_ENTRY_SIZE (htab
) * 2));
11182 if (htab
->root
.sgot
)
11184 if (htab
->root
.sgot
->size
> 0)
11187 sdyn
? sdyn
->output_section
->vma
+ sdyn
->output_offset
: 0;
11188 bfd_put_NN (output_bfd
, addr
, htab
->root
.sgot
->contents
);
11192 elf_section_data (htab
->root
.sgotplt
->output_section
)->
11193 this_hdr
.sh_entsize
= GOT_ENTRY_SIZE (htab
);
11196 if (htab
->root
.sgot
&& htab
->root
.sgot
->size
> 0)
11197 elf_section_data (htab
->root
.sgot
->output_section
)->this_hdr
.sh_entsize
11198 = GOT_ENTRY_SIZE (htab
);
11200 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
11201 htab_traverse (htab
->loc_hash_table
,
11202 elfNN_aarch64_finish_local_dynamic_symbol
,
11208 /* Check if BTI enabled PLTs are needed. Returns the type needed. */
11209 static aarch64_plt_type
11210 get_plt_type (bfd
*abfd
)
11212 aarch64_plt_type ret
= PLT_NORMAL
;
11213 bfd_byte
*contents
, *extdyn
, *extdynend
;
11214 asection
*sec
= bfd_get_section_by_name (abfd
, ".dynamic");
11215 if (!sec
|| !bfd_malloc_and_get_section (abfd
, sec
, &contents
))
11218 extdynend
= contents
+ sec
->size
;
11219 for (; extdyn
< extdynend
; extdyn
+= sizeof (ElfNN_External_Dyn
))
11221 Elf_Internal_Dyn dyn
;
11222 bfd_elfNN_swap_dyn_in (abfd
, extdyn
, &dyn
);
11224 /* Let's check the processor specific dynamic array tags. */
11225 bfd_vma tag
= dyn
.d_tag
;
11226 if (tag
< DT_LOPROC
|| tag
> DT_HIPROC
)
11231 case DT_AARCH64_BTI_PLT
:
11235 case DT_AARCH64_PAC_PLT
:
11247 elfNN_aarch64_get_synthetic_symtab (bfd
*abfd
,
11254 elf_aarch64_tdata (abfd
)->plt_type
= get_plt_type (abfd
);
11255 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
11256 dynsymcount
, dynsyms
, ret
);
11259 /* Return address for Ith PLT stub in section PLT, for relocation REL
11260 or (bfd_vma) -1 if it should not be included. */
11263 elfNN_aarch64_plt_sym_val (bfd_vma i
, const asection
*plt
,
11264 const arelent
*rel ATTRIBUTE_UNUSED
)
11266 size_t plt0_size
= PLT_ENTRY_SIZE
;
11267 size_t pltn_size
= PLT_SMALL_ENTRY_SIZE
;
11269 if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_BTI_PAC
)
11271 if (elf_elfheader (plt
->owner
)->e_type
== ET_EXEC
)
11272 pltn_size
= PLT_BTI_PAC_SMALL_ENTRY_SIZE
;
11274 pltn_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
11276 else if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_BTI
)
11278 if (elf_elfheader (plt
->owner
)->e_type
== ET_EXEC
)
11279 pltn_size
= PLT_BTI_SMALL_ENTRY_SIZE
;
11281 else if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_PAC
)
11283 pltn_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
11286 return plt
->vma
+ plt0_size
+ i
* pltn_size
;
11289 /* Returns TRUE if NAME is an AArch64 mapping symbol.
11290 The ARM ELF standard defines $x (for A64 code) and $d (for data).
11291 It also allows a period initiated suffix to be added to the symbol, ie:
11292 "$[adtx]\.[:sym_char]+". */
11295 is_aarch64_mapping_symbol (const char * name
)
11297 return name
!= NULL
/* Paranoia. */
11298 && name
[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
11299 the mapping symbols could have acquired a prefix.
11300 We do not support this here, since such symbols no
11301 longer conform to the ARM ELF ABI. */
11302 && (name
[1] == 'd' || name
[1] == 'x' || name
[1] == 'c')
11303 && (name
[2] == 0 || name
[2] == '.');
11304 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
11305 any characters that follow the period are legal characters for the body
11306 of a symbol's name. For now we just assume that this is the case. */
11309 /* Make sure that mapping symbols in object files are not removed via the
11310 "strip --strip-unneeded" tool. These symbols might needed in order to
11311 correctly generate linked files. Once an object file has been linked,
11312 it should be safe to remove them. */
11315 elfNN_aarch64_backend_symbol_processing (bfd
*abfd
, asymbol
*sym
)
11317 if (((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0)
11318 && sym
->section
!= bfd_abs_section_ptr
11319 && is_aarch64_mapping_symbol (sym
->name
))
11320 sym
->flags
|= BSF_KEEP
;
11323 /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a
11324 wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account
11325 for the effect of GNU properties of the output_bfd. */
11327 elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info
*info
)
11329 uint32_t prop
= elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
;
11330 bfd
*pbfd
= _bfd_aarch64_elf_link_setup_gnu_properties (info
, &prop
);
11331 elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
= prop
;
11332 elf_aarch64_tdata (info
->output_bfd
)->plt_type
11333 |= (prop
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
) ? PLT_BTI
: 0;
11337 /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a
11338 wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account
11339 for the effect of GNU properties of the output_bfd. */
11341 elfNN_aarch64_merge_gnu_properties (struct bfd_link_info
*info
,
11342 bfd
*abfd
, bfd
*bbfd
,
11343 elf_property
*aprop
,
11344 elf_property
*bprop
)
11347 = elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
;
11349 /* If output has been marked with BTI using command line argument, give out
11350 warning if necessary. */
11351 /* Properties are merged per type, hence only check for warnings when merging
11352 GNU_PROPERTY_AARCH64_FEATURE_1_AND. */
11353 if (((aprop
&& aprop
->pr_type
== GNU_PROPERTY_AARCH64_FEATURE_1_AND
)
11354 || (bprop
&& bprop
->pr_type
== GNU_PROPERTY_AARCH64_FEATURE_1_AND
))
11355 && (prop
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
)
11356 && (!elf_aarch64_tdata (info
->output_bfd
)->no_bti_warn
))
11358 if ((aprop
&& !(aprop
->u
.number
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
))
11361 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
11362 "all inputs do not have BTI in NOTE section."),
11365 if ((bprop
&& !(bprop
->u
.number
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
))
11368 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
11369 "all inputs do not have BTI in NOTE section."),
11374 return _bfd_aarch64_elf_merge_gnu_properties (info
, abfd
, aprop
,
11378 /* Demangle c64 function symbols as we read them in. */
11381 aarch64_elfNN_swap_symbol_in (bfd
* abfd
,
11384 Elf_Internal_Sym
*dst
)
11386 if (!bfd_elfNN_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
11389 dst
->st_target_internal
= 0;
11391 if (ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
11392 || ELF_ST_TYPE (dst
->st_info
) == STT_GNU_IFUNC
)
11394 dst
->st_target_internal
= dst
->st_value
& ST_BRANCH_TO_C64
;
11395 dst
->st_value
&= ~(bfd_vma
) ST_BRANCH_TO_C64
;
11402 /* Mangle c64 function symbols as we write them out. */
11405 aarch64_elfNN_swap_symbol_out (bfd
*abfd
,
11406 const Elf_Internal_Sym
*src
,
11410 Elf_Internal_Sym newsym
= *src
;
11412 if ((ELF_ST_TYPE (newsym
.st_info
) == STT_FUNC
11413 || ELF_ST_TYPE (newsym
.st_info
) == STT_GNU_IFUNC
)
11414 && newsym
.st_shndx
!= SHN_UNDEF
)
11415 newsym
.st_value
|= newsym
.st_target_internal
;
11417 bfd_elfNN_swap_symbol_out (abfd
, &newsym
, cdst
, shndx
);
11420 /* Define the size of a GOT element for the generic mid-end. */
11423 elfNN_aarch64_got_elt_size (bfd
*abfd ATTRIBUTE_UNUSED
,
11424 struct bfd_link_info
*info
,
11425 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
,
11426 bfd
*ibfd ATTRIBUTE_UNUSED
,
11427 unsigned long symndx ATTRIBUTE_UNUSED
)
11429 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
11431 return GOT_ENTRY_SIZE (htab
);
11434 /* Define the size of a GOT header, which is the minimum size of the GOT section
11435 when one is needed. */
11438 elfNN_aarch64_got_header_size (struct bfd_link_info
*info
)
11440 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
11442 return GOT_ENTRY_SIZE (htab
) * GOT_RESERVED_HEADER_SLOTS
;
11445 /* Identify the 'C' in the CIE augmentation string. */
11448 elf64_aarch64_eh_frame_augmentation_char (const char aug
)
11453 /* We use this so we can override certain functions
11454 (though currently we don't). */
11456 const struct elf_size_info elfNN_aarch64_size_info
=
11458 sizeof (ElfNN_External_Ehdr
),
11459 sizeof (ElfNN_External_Phdr
),
11460 sizeof (ElfNN_External_Shdr
),
11461 sizeof (ElfNN_External_Rel
),
11462 sizeof (ElfNN_External_Rela
),
11463 sizeof (ElfNN_External_Sym
),
11464 sizeof (ElfNN_External_Dyn
),
11465 sizeof (Elf_External_Note
),
11466 4, /* Hash table entry size. */
11467 1, /* Internal relocs per external relocs. */
11468 ARCH_SIZE
, /* Arch size. */
11469 LOG_FILE_ALIGN
, /* Log_file_align. */
11470 ELFCLASSNN
, EV_CURRENT
,
11471 bfd_elfNN_write_out_phdrs
,
11472 bfd_elfNN_write_shdrs_and_ehdr
,
11473 bfd_elfNN_checksum_contents
,
11474 bfd_elfNN_write_relocs
,
11475 aarch64_elfNN_swap_symbol_in
,
11476 aarch64_elfNN_swap_symbol_out
,
11477 bfd_elfNN_slurp_reloc_table
,
11478 bfd_elfNN_slurp_symbol_table
,
11479 bfd_elfNN_swap_dyn_in
,
11480 bfd_elfNN_swap_dyn_out
,
11481 bfd_elfNN_swap_reloc_in
,
11482 bfd_elfNN_swap_reloc_out
,
11483 bfd_elfNN_swap_reloca_in
,
11484 bfd_elfNN_swap_reloca_out
11487 #define ELF_ARCH bfd_arch_aarch64
11488 #define ELF_MACHINE_CODE EM_AARCH64
11489 #define ELF_MAXPAGESIZE 0x10000
11490 #define ELF_MINPAGESIZE 0x1000
11491 #define ELF_COMMONPAGESIZE 0x1000
11493 #define bfd_elfNN_bfd_is_target_special_symbol \
11494 elfNN_aarch64_is_target_special_symbol
11496 #define bfd_elfNN_bfd_link_hash_table_create \
11497 elfNN_aarch64_link_hash_table_create
11499 #define bfd_elfNN_bfd_merge_private_bfd_data \
11500 elfNN_aarch64_merge_private_bfd_data
11502 #define bfd_elfNN_bfd_print_private_bfd_data \
11503 elfNN_aarch64_print_private_bfd_data
11505 #define bfd_elfNN_bfd_reloc_type_lookup \
11506 elfNN_aarch64_reloc_type_lookup
11508 #define bfd_elfNN_bfd_reloc_name_lookup \
11509 elfNN_aarch64_reloc_name_lookup
11511 #define bfd_elfNN_bfd_set_private_flags \
11512 elfNN_aarch64_set_private_flags
11514 #define bfd_elfNN_find_inliner_info \
11515 elfNN_aarch64_find_inliner_info
11517 #define bfd_elfNN_get_synthetic_symtab \
11518 elfNN_aarch64_get_synthetic_symtab
11520 #define bfd_elfNN_mkobject \
11521 elfNN_aarch64_mkobject
11523 #define bfd_elfNN_new_section_hook \
11524 elfNN_aarch64_new_section_hook
11526 #define elf_backend_adjust_dynamic_symbol \
11527 elfNN_aarch64_adjust_dynamic_symbol
11529 #define elf_backend_always_size_sections \
11530 elfNN_aarch64_always_size_sections
11532 #define elf_backend_check_relocs \
11533 elfNN_aarch64_check_relocs
11535 #define elf_backend_copy_indirect_symbol \
11536 elfNN_aarch64_copy_indirect_symbol
11538 #define elf_backend_merge_symbol_attribute \
11539 elfNN_aarch64_merge_symbol_attribute
11541 /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
11542 to them in our hash. */
11543 #define elf_backend_create_dynamic_sections \
11544 elfNN_aarch64_create_dynamic_sections
11546 #define elf_backend_init_index_section \
11547 _bfd_elf_init_2_index_sections
11549 #define elf_backend_finish_dynamic_sections \
11550 elfNN_aarch64_finish_dynamic_sections
11552 #define elf_backend_finish_dynamic_symbol \
11553 elfNN_aarch64_finish_dynamic_symbol
11555 #define elf_backend_object_p \
11556 elfNN_aarch64_object_p
11558 #define elf_backend_output_arch_local_syms \
11559 elfNN_aarch64_output_arch_local_syms
11561 #define elf_backend_maybe_function_sym \
11562 elfNN_aarch64_maybe_function_sym
11564 #define elf_backend_plt_sym_val \
11565 elfNN_aarch64_plt_sym_val
11567 #define elf_backend_init_file_header \
11568 elfNN_aarch64_init_file_header
11570 #define elf_backend_relocate_section \
11571 elfNN_aarch64_relocate_section
11573 #define elf_backend_reloc_type_class \
11574 elfNN_aarch64_reloc_type_class
11576 #define elf_backend_section_from_shdr \
11577 elfNN_aarch64_section_from_shdr
11579 #define elf_backend_size_dynamic_sections \
11580 elfNN_aarch64_size_dynamic_sections
11582 #define elf_backend_size_info \
11583 elfNN_aarch64_size_info
11585 #define elf_backend_write_section \
11586 elfNN_aarch64_write_section
11588 #define elf_backend_symbol_processing \
11589 elfNN_aarch64_backend_symbol_processing
11591 #define elf_backend_setup_gnu_properties \
11592 elfNN_aarch64_link_setup_gnu_properties
11594 #define elf_backend_merge_gnu_properties \
11595 elfNN_aarch64_merge_gnu_properties
11597 #define elf_backend_got_header_size \
11598 elfNN_aarch64_got_header_size
11600 #define elf_backend_got_elt_size \
11601 elfNN_aarch64_got_elt_size
11603 #define elf_backend_eh_frame_augmentation_char \
11604 elf64_aarch64_eh_frame_augmentation_char
11606 #define elf_backend_can_refcount 1
11607 #define elf_backend_can_gc_sections 1
11608 #define elf_backend_plt_readonly 1
11609 #define elf_backend_want_got_plt 1
11610 #define elf_backend_want_plt_sym 0
11611 #define elf_backend_want_dynrelro 1
11612 #define elf_backend_may_use_rel_p 0
11613 #define elf_backend_may_use_rela_p 1
11614 #define elf_backend_default_use_rela_p 1
11615 #define elf_backend_rela_normal 1
11616 #define elf_backend_dtrel_excludes_plt 1
11617 #define elf_backend_default_execstack 0
11618 #define elf_backend_extern_protected_data 1
11619 #define elf_backend_hash_symbol elf_aarch64_hash_symbol
11621 #undef elf_backend_obj_attrs_section
11622 #define elf_backend_obj_attrs_section ".ARM.attributes"
11624 #include "elfNN-target.h"
11626 /* CloudABI support. */
11628 #undef TARGET_LITTLE_SYM
11629 #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
11630 #undef TARGET_LITTLE_NAME
11631 #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
11632 #undef TARGET_BIG_SYM
11633 #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
11634 #undef TARGET_BIG_NAME
11635 #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
11638 #define ELF_OSABI ELFOSABI_CLOUDABI
11641 #define elfNN_bed elfNN_aarch64_cloudabi_bed
11643 #include "elfNN-target.h"