1 /* AArch64-specific support for NN-bit ELF.
2 Copyright (C) 2009-2018 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"
142 #include "bfd_stdint.h"
145 #include "objalloc.h"
146 #include "elf/aarch64.h"
147 #include "elfxx-aarch64.h"
152 #define AARCH64_R(NAME) R_AARCH64_ ## NAME
153 #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME
154 #define HOWTO64(...) HOWTO (__VA_ARGS__)
155 #define HOWTO32(...) EMPTY_HOWTO (0)
156 #define LOG_FILE_ALIGN 3
157 #define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
161 #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME
162 #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME
163 #define HOWTO64(...) EMPTY_HOWTO (0)
164 #define HOWTO32(...) HOWTO (__VA_ARGS__)
165 #define LOG_FILE_ALIGN 2
166 #define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
167 #define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC
170 #define IS_AARCH64_TLS_RELOC(R_TYPE) \
171 ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
172 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
173 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
174 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
175 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
176 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
177 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
178 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
179 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
180 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
181 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
182 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
183 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
184 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
185 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
186 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
187 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
188 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \
189 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \
190 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \
191 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \
192 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \
193 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \
194 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \
195 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \
196 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \
197 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \
198 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \
199 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \
200 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \
201 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
202 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
203 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
204 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \
205 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \
206 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \
207 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \
208 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \
209 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \
210 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \
211 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \
212 || IS_AARCH64_TLSDESC_RELOC ((R_TYPE)))
214 #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
215 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
216 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
217 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
218 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
219 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
220 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
221 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \
222 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
223 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
224 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
225 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
226 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
227 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
228 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
229 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
230 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
231 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
232 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
233 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \
234 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
235 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
236 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21)
238 #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
239 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \
240 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
241 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
242 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
243 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
244 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
245 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
246 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \
247 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
248 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
249 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
250 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1)
252 #define ELIMINATE_COPY_RELOCS 1
254 /* Return size of a relocation entry. HTAB is the bfd's
255 elf_aarch64_link_hash_entry. */
256 #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela))
258 /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */
259 #define GOT_ENTRY_SIZE (ARCH_SIZE / 8)
260 #define PLT_ENTRY_SIZE (32)
261 #define PLT_SMALL_ENTRY_SIZE (16)
262 #define PLT_TLSDESC_ENTRY_SIZE (32)
264 /* Encoding of the nop instruction. */
265 #define INSN_NOP 0xd503201f
267 #define aarch64_compute_jump_table_size(htab) \
268 (((htab)->root.srelplt == NULL) ? 0 \
269 : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE)
271 /* The first entry in a procedure linkage table looks like this
272 if the distance between the PLTGOT and the PLT is < 4GB use
273 these PLT entries. Note that the dynamic linker gets &PLTGOT[2]
274 in x16 and needs to work out PLTGOT[1] by using an address of
275 [x16,#-GOT_ENTRY_SIZE]. */
276 static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] =
278 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
279 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
281 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
282 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
284 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
285 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
287 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
288 0x1f, 0x20, 0x03, 0xd5, /* nop */
289 0x1f, 0x20, 0x03, 0xd5, /* nop */
290 0x1f, 0x20, 0x03, 0xd5, /* nop */
293 /* Per function entry in a procedure linkage table looks like this
294 if the distance between the PLTGOT and the PLT is < 4GB use
295 these PLT entries. */
296 static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] =
298 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
300 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
301 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
303 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
304 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
306 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
309 static const bfd_byte
310 elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] =
312 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
313 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
314 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
316 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
317 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
319 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
320 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
322 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
323 0x1f, 0x20, 0x03, 0xd5, /* nop */
324 0x1f, 0x20, 0x03, 0xd5, /* nop */
327 #define elf_info_to_howto elfNN_aarch64_info_to_howto
328 #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto
330 #define AARCH64_ELF_ABI_VERSION 0
332 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
333 #define ALL_ONES (~ (bfd_vma) 0)
335 /* Indexed by the bfd interal reloc enumerators.
336 Therefore, the table needs to be synced with BFD_RELOC_AARCH64_*
339 static reloc_howto_type elfNN_aarch64_howto_table[] =
343 /* Basic data relocations. */
345 /* Deprecated, but retained for backwards compatibility. */
346 HOWTO64 (R_AARCH64_NULL, /* type */
348 3, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE, /* pc_relative */
352 complain_overflow_dont, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
354 "R_AARCH64_NULL", /* name */
355 FALSE, /* partial_inplace */
358 FALSE), /* pcrel_offset */
359 HOWTO (R_AARCH64_NONE, /* type */
361 3, /* size (0 = byte, 1 = short, 2 = long) */
363 FALSE, /* pc_relative */
365 complain_overflow_dont, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_AARCH64_NONE", /* name */
368 FALSE, /* partial_inplace */
371 FALSE), /* pcrel_offset */
374 HOWTO64 (AARCH64_R (ABS64), /* type */
376 4, /* size (4 = long long) */
378 FALSE, /* pc_relative */
380 complain_overflow_unsigned, /* complain_on_overflow */
381 bfd_elf_generic_reloc, /* special_function */
382 AARCH64_R_STR (ABS64), /* name */
383 FALSE, /* partial_inplace */
384 ALL_ONES, /* src_mask */
385 ALL_ONES, /* dst_mask */
386 FALSE), /* pcrel_offset */
389 HOWTO (AARCH64_R (ABS32), /* type */
391 2, /* size (0 = byte, 1 = short, 2 = long) */
393 FALSE, /* pc_relative */
395 complain_overflow_unsigned, /* complain_on_overflow */
396 bfd_elf_generic_reloc, /* special_function */
397 AARCH64_R_STR (ABS32), /* name */
398 FALSE, /* partial_inplace */
399 0xffffffff, /* src_mask */
400 0xffffffff, /* dst_mask */
401 FALSE), /* pcrel_offset */
404 HOWTO (AARCH64_R (ABS16), /* type */
406 1, /* size (0 = byte, 1 = short, 2 = long) */
408 FALSE, /* pc_relative */
410 complain_overflow_unsigned, /* complain_on_overflow */
411 bfd_elf_generic_reloc, /* special_function */
412 AARCH64_R_STR (ABS16), /* name */
413 FALSE, /* partial_inplace */
414 0xffff, /* src_mask */
415 0xffff, /* dst_mask */
416 FALSE), /* pcrel_offset */
418 /* .xword: (S+A-P) */
419 HOWTO64 (AARCH64_R (PREL64), /* type */
421 4, /* size (4 = long long) */
423 TRUE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 AARCH64_R_STR (PREL64), /* name */
428 FALSE, /* partial_inplace */
429 ALL_ONES, /* src_mask */
430 ALL_ONES, /* dst_mask */
431 TRUE), /* pcrel_offset */
434 HOWTO (AARCH64_R (PREL32), /* type */
436 2, /* size (0 = byte, 1 = short, 2 = long) */
438 TRUE, /* pc_relative */
440 complain_overflow_signed, /* complain_on_overflow */
441 bfd_elf_generic_reloc, /* special_function */
442 AARCH64_R_STR (PREL32), /* name */
443 FALSE, /* partial_inplace */
444 0xffffffff, /* src_mask */
445 0xffffffff, /* dst_mask */
446 TRUE), /* pcrel_offset */
449 HOWTO (AARCH64_R (PREL16), /* type */
451 1, /* size (0 = byte, 1 = short, 2 = long) */
453 TRUE, /* pc_relative */
455 complain_overflow_signed, /* complain_on_overflow */
456 bfd_elf_generic_reloc, /* special_function */
457 AARCH64_R_STR (PREL16), /* name */
458 FALSE, /* partial_inplace */
459 0xffff, /* src_mask */
460 0xffff, /* dst_mask */
461 TRUE), /* pcrel_offset */
463 /* Group relocations to create a 16, 32, 48 or 64 bit
464 unsigned data or abs address inline. */
466 /* MOVZ: ((S+A) >> 0) & 0xffff */
467 HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */
469 2, /* size (0 = byte, 1 = short, 2 = long) */
471 FALSE, /* pc_relative */
473 complain_overflow_unsigned, /* complain_on_overflow */
474 bfd_elf_generic_reloc, /* special_function */
475 AARCH64_R_STR (MOVW_UABS_G0), /* name */
476 FALSE, /* partial_inplace */
477 0xffff, /* src_mask */
478 0xffff, /* dst_mask */
479 FALSE), /* pcrel_offset */
481 /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
482 HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */
484 2, /* size (0 = byte, 1 = short, 2 = long) */
486 FALSE, /* pc_relative */
488 complain_overflow_dont, /* complain_on_overflow */
489 bfd_elf_generic_reloc, /* special_function */
490 AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */
491 FALSE, /* partial_inplace */
492 0xffff, /* src_mask */
493 0xffff, /* dst_mask */
494 FALSE), /* pcrel_offset */
496 /* MOVZ: ((S+A) >> 16) & 0xffff */
497 HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */
499 2, /* size (0 = byte, 1 = short, 2 = long) */
501 FALSE, /* pc_relative */
503 complain_overflow_unsigned, /* complain_on_overflow */
504 bfd_elf_generic_reloc, /* special_function */
505 AARCH64_R_STR (MOVW_UABS_G1), /* name */
506 FALSE, /* partial_inplace */
507 0xffff, /* src_mask */
508 0xffff, /* dst_mask */
509 FALSE), /* pcrel_offset */
511 /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
512 HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */
514 2, /* size (0 = byte, 1 = short, 2 = long) */
516 FALSE, /* pc_relative */
518 complain_overflow_dont, /* complain_on_overflow */
519 bfd_elf_generic_reloc, /* special_function */
520 AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */
521 FALSE, /* partial_inplace */
522 0xffff, /* src_mask */
523 0xffff, /* dst_mask */
524 FALSE), /* pcrel_offset */
526 /* MOVZ: ((S+A) >> 32) & 0xffff */
527 HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */
529 2, /* size (0 = byte, 1 = short, 2 = long) */
531 FALSE, /* pc_relative */
533 complain_overflow_unsigned, /* complain_on_overflow */
534 bfd_elf_generic_reloc, /* special_function */
535 AARCH64_R_STR (MOVW_UABS_G2), /* name */
536 FALSE, /* partial_inplace */
537 0xffff, /* src_mask */
538 0xffff, /* dst_mask */
539 FALSE), /* pcrel_offset */
541 /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
542 HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */
544 2, /* size (0 = byte, 1 = short, 2 = long) */
546 FALSE, /* pc_relative */
548 complain_overflow_dont, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */
551 FALSE, /* partial_inplace */
552 0xffff, /* src_mask */
553 0xffff, /* dst_mask */
554 FALSE), /* pcrel_offset */
556 /* MOVZ: ((S+A) >> 48) & 0xffff */
557 HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
561 FALSE, /* pc_relative */
563 complain_overflow_unsigned, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 AARCH64_R_STR (MOVW_UABS_G3), /* name */
566 FALSE, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 FALSE), /* pcrel_offset */
571 /* Group relocations to create high part of a 16, 32, 48 or 64 bit
572 signed data or abs address inline. Will change instruction
573 to MOVN or MOVZ depending on sign of calculated value. */
575 /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
576 HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 FALSE, /* pc_relative */
582 complain_overflow_signed, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 AARCH64_R_STR (MOVW_SABS_G0), /* name */
585 FALSE, /* partial_inplace */
586 0xffff, /* src_mask */
587 0xffff, /* dst_mask */
588 FALSE), /* pcrel_offset */
590 /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
591 HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
595 FALSE, /* pc_relative */
597 complain_overflow_signed, /* complain_on_overflow */
598 bfd_elf_generic_reloc, /* special_function */
599 AARCH64_R_STR (MOVW_SABS_G1), /* name */
600 FALSE, /* partial_inplace */
601 0xffff, /* src_mask */
602 0xffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
605 /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
606 HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
610 FALSE, /* pc_relative */
612 complain_overflow_signed, /* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
614 AARCH64_R_STR (MOVW_SABS_G2), /* name */
615 FALSE, /* partial_inplace */
616 0xffff, /* src_mask */
617 0xffff, /* dst_mask */
618 FALSE), /* pcrel_offset */
620 /* Group relocations to create a 16, 32, 48 or 64 bit
621 PC relative address inline. */
623 /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */
624 HOWTO64 (AARCH64_R (MOVW_PREL_G0), /* type */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
628 TRUE, /* pc_relative */
630 complain_overflow_signed, /* complain_on_overflow */
631 bfd_elf_generic_reloc, /* special_function */
632 AARCH64_R_STR (MOVW_PREL_G0), /* name */
633 FALSE, /* partial_inplace */
634 0xffff, /* src_mask */
635 0xffff, /* dst_mask */
636 TRUE), /* pcrel_offset */
638 /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */
639 HOWTO64 (AARCH64_R (MOVW_PREL_G0_NC), /* type */
641 2, /* size (0 = byte, 1 = short, 2 = long) */
643 TRUE, /* pc_relative */
645 complain_overflow_dont, /* complain_on_overflow */
646 bfd_elf_generic_reloc, /* special_function */
647 AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */
648 FALSE, /* partial_inplace */
649 0xffff, /* src_mask */
650 0xffff, /* dst_mask */
651 TRUE), /* pcrel_offset */
653 /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */
654 HOWTO64 (AARCH64_R (MOVW_PREL_G1), /* type */
656 2, /* size (0 = byte, 1 = short, 2 = long) */
658 TRUE, /* pc_relative */
660 complain_overflow_signed, /* complain_on_overflow */
661 bfd_elf_generic_reloc, /* special_function */
662 AARCH64_R_STR (MOVW_PREL_G1), /* name */
663 FALSE, /* partial_inplace */
664 0xffff, /* src_mask */
665 0xffff, /* dst_mask */
666 TRUE), /* pcrel_offset */
668 /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */
669 HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */
671 2, /* size (0 = byte, 1 = short, 2 = long) */
673 TRUE, /* pc_relative */
675 complain_overflow_dont, /* complain_on_overflow */
676 bfd_elf_generic_reloc, /* special_function */
677 AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */
678 FALSE, /* partial_inplace */
679 0xffff, /* src_mask */
680 0xffff, /* dst_mask */
681 TRUE), /* pcrel_offset */
683 /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */
684 HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */
686 2, /* size (0 = byte, 1 = short, 2 = long) */
688 TRUE, /* pc_relative */
690 complain_overflow_signed, /* complain_on_overflow */
691 bfd_elf_generic_reloc, /* special_function */
692 AARCH64_R_STR (MOVW_PREL_G2), /* name */
693 FALSE, /* partial_inplace */
694 0xffff, /* src_mask */
695 0xffff, /* dst_mask */
696 TRUE), /* pcrel_offset */
698 /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */
699 HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
703 TRUE, /* pc_relative */
705 complain_overflow_dont, /* complain_on_overflow */
706 bfd_elf_generic_reloc, /* special_function */
707 AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */
708 FALSE, /* partial_inplace */
709 0xffff, /* src_mask */
710 0xffff, /* dst_mask */
711 TRUE), /* pcrel_offset */
713 /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */
714 HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */
716 2, /* size (0 = byte, 1 = short, 2 = long) */
718 TRUE, /* pc_relative */
720 complain_overflow_dont, /* complain_on_overflow */
721 bfd_elf_generic_reloc, /* special_function */
722 AARCH64_R_STR (MOVW_PREL_G3), /* name */
723 FALSE, /* partial_inplace */
724 0xffff, /* src_mask */
725 0xffff, /* dst_mask */
726 TRUE), /* pcrel_offset */
728 /* Relocations to generate 19, 21 and 33 bit PC-relative load/store
729 addresses: PG(x) is (x & ~0xfff). */
731 /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
732 HOWTO (AARCH64_R (LD_PREL_LO19), /* type */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
736 TRUE, /* pc_relative */
738 complain_overflow_signed, /* complain_on_overflow */
739 bfd_elf_generic_reloc, /* special_function */
740 AARCH64_R_STR (LD_PREL_LO19), /* name */
741 FALSE, /* partial_inplace */
742 0x7ffff, /* src_mask */
743 0x7ffff, /* dst_mask */
744 TRUE), /* pcrel_offset */
746 /* ADR: (S+A-P) & 0x1fffff */
747 HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */
749 2, /* size (0 = byte, 1 = short, 2 = long) */
751 TRUE, /* pc_relative */
753 complain_overflow_signed, /* complain_on_overflow */
754 bfd_elf_generic_reloc, /* special_function */
755 AARCH64_R_STR (ADR_PREL_LO21), /* name */
756 FALSE, /* partial_inplace */
757 0x1fffff, /* src_mask */
758 0x1fffff, /* dst_mask */
759 TRUE), /* pcrel_offset */
761 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
762 HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */
764 2, /* size (0 = byte, 1 = short, 2 = long) */
766 TRUE, /* pc_relative */
768 complain_overflow_signed, /* complain_on_overflow */
769 bfd_elf_generic_reloc, /* special_function */
770 AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */
771 FALSE, /* partial_inplace */
772 0x1fffff, /* src_mask */
773 0x1fffff, /* dst_mask */
774 TRUE), /* pcrel_offset */
776 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
777 HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */
779 2, /* size (0 = byte, 1 = short, 2 = long) */
781 TRUE, /* pc_relative */
783 complain_overflow_dont, /* complain_on_overflow */
784 bfd_elf_generic_reloc, /* special_function */
785 AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */
786 FALSE, /* partial_inplace */
787 0x1fffff, /* src_mask */
788 0x1fffff, /* dst_mask */
789 TRUE), /* pcrel_offset */
791 /* ADD: (S+A) & 0xfff [no overflow check] */
792 HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */
794 2, /* size (0 = byte, 1 = short, 2 = long) */
796 FALSE, /* pc_relative */
798 complain_overflow_dont, /* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
800 AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */
801 FALSE, /* partial_inplace */
802 0x3ffc00, /* src_mask */
803 0x3ffc00, /* dst_mask */
804 FALSE), /* pcrel_offset */
806 /* LD/ST8: (S+A) & 0xfff */
807 HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE, /* pc_relative */
813 complain_overflow_dont, /* complain_on_overflow */
814 bfd_elf_generic_reloc, /* special_function */
815 AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */
816 FALSE, /* partial_inplace */
817 0xfff, /* src_mask */
818 0xfff, /* dst_mask */
819 FALSE), /* pcrel_offset */
821 /* Relocations for control-flow instructions. */
823 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
824 HOWTO (AARCH64_R (TSTBR14), /* type */
826 2, /* size (0 = byte, 1 = short, 2 = long) */
828 TRUE, /* pc_relative */
830 complain_overflow_signed, /* complain_on_overflow */
831 bfd_elf_generic_reloc, /* special_function */
832 AARCH64_R_STR (TSTBR14), /* name */
833 FALSE, /* partial_inplace */
834 0x3fff, /* src_mask */
835 0x3fff, /* dst_mask */
836 TRUE), /* pcrel_offset */
838 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
839 HOWTO (AARCH64_R (CONDBR19), /* type */
841 2, /* size (0 = byte, 1 = short, 2 = long) */
843 TRUE, /* pc_relative */
845 complain_overflow_signed, /* complain_on_overflow */
846 bfd_elf_generic_reloc, /* special_function */
847 AARCH64_R_STR (CONDBR19), /* name */
848 FALSE, /* partial_inplace */
849 0x7ffff, /* src_mask */
850 0x7ffff, /* dst_mask */
851 TRUE), /* pcrel_offset */
853 /* B: ((S+A-P) >> 2) & 0x3ffffff */
854 HOWTO (AARCH64_R (JUMP26), /* type */
856 2, /* size (0 = byte, 1 = short, 2 = long) */
858 TRUE, /* pc_relative */
860 complain_overflow_signed, /* complain_on_overflow */
861 bfd_elf_generic_reloc, /* special_function */
862 AARCH64_R_STR (JUMP26), /* name */
863 FALSE, /* partial_inplace */
864 0x3ffffff, /* src_mask */
865 0x3ffffff, /* dst_mask */
866 TRUE), /* pcrel_offset */
868 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
869 HOWTO (AARCH64_R (CALL26), /* type */
871 2, /* size (0 = byte, 1 = short, 2 = long) */
873 TRUE, /* pc_relative */
875 complain_overflow_signed, /* complain_on_overflow */
876 bfd_elf_generic_reloc, /* special_function */
877 AARCH64_R_STR (CALL26), /* name */
878 FALSE, /* partial_inplace */
879 0x3ffffff, /* src_mask */
880 0x3ffffff, /* dst_mask */
881 TRUE), /* pcrel_offset */
883 /* LD/ST16: (S+A) & 0xffe */
884 HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */
886 2, /* size (0 = byte, 1 = short, 2 = long) */
888 FALSE, /* pc_relative */
890 complain_overflow_dont, /* complain_on_overflow */
891 bfd_elf_generic_reloc, /* special_function */
892 AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */
893 FALSE, /* partial_inplace */
894 0xffe, /* src_mask */
895 0xffe, /* dst_mask */
896 FALSE), /* pcrel_offset */
898 /* LD/ST32: (S+A) & 0xffc */
899 HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */
901 2, /* size (0 = byte, 1 = short, 2 = long) */
903 FALSE, /* pc_relative */
905 complain_overflow_dont, /* complain_on_overflow */
906 bfd_elf_generic_reloc, /* special_function */
907 AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */
908 FALSE, /* partial_inplace */
909 0xffc, /* src_mask */
910 0xffc, /* dst_mask */
911 FALSE), /* pcrel_offset */
913 /* LD/ST64: (S+A) & 0xff8 */
914 HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
918 FALSE, /* pc_relative */
920 complain_overflow_dont, /* complain_on_overflow */
921 bfd_elf_generic_reloc, /* special_function */
922 AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */
923 FALSE, /* partial_inplace */
924 0xff8, /* src_mask */
925 0xff8, /* dst_mask */
926 FALSE), /* pcrel_offset */
928 /* LD/ST128: (S+A) & 0xff0 */
929 HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */
931 2, /* size (0 = byte, 1 = short, 2 = long) */
933 FALSE, /* pc_relative */
935 complain_overflow_dont, /* complain_on_overflow */
936 bfd_elf_generic_reloc, /* special_function */
937 AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */
938 FALSE, /* partial_inplace */
939 0xff0, /* src_mask */
940 0xff0, /* dst_mask */
941 FALSE), /* pcrel_offset */
943 /* Set a load-literal immediate field to bits
944 0x1FFFFC of G(S)-P */
945 HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */
947 2, /* size (0 = byte,1 = short,2 = long) */
949 TRUE, /* pc_relative */
951 complain_overflow_signed, /* complain_on_overflow */
952 bfd_elf_generic_reloc, /* special_function */
953 AARCH64_R_STR (GOT_LD_PREL19), /* name */
954 FALSE, /* partial_inplace */
955 0xffffe0, /* src_mask */
956 0xffffe0, /* dst_mask */
957 TRUE), /* pcrel_offset */
959 /* Get to the page for the GOT entry for the symbol
960 (G(S) - P) using an ADRP instruction. */
961 HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */
963 2, /* size (0 = byte, 1 = short, 2 = long) */
965 TRUE, /* pc_relative */
967 complain_overflow_dont, /* complain_on_overflow */
968 bfd_elf_generic_reloc, /* special_function */
969 AARCH64_R_STR (ADR_GOT_PAGE), /* name */
970 FALSE, /* partial_inplace */
971 0x1fffff, /* src_mask */
972 0x1fffff, /* dst_mask */
973 TRUE), /* pcrel_offset */
975 /* LD64: GOT offset G(S) & 0xff8 */
976 HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */
978 2, /* size (0 = byte, 1 = short, 2 = long) */
980 FALSE, /* pc_relative */
982 complain_overflow_dont, /* complain_on_overflow */
983 bfd_elf_generic_reloc, /* special_function */
984 AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */
985 FALSE, /* partial_inplace */
986 0xff8, /* src_mask */
987 0xff8, /* dst_mask */
988 FALSE), /* pcrel_offset */
990 /* LD32: GOT offset G(S) & 0xffc */
991 HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */
993 2, /* size (0 = byte, 1 = short, 2 = long) */
995 FALSE, /* pc_relative */
997 complain_overflow_dont, /* complain_on_overflow */
998 bfd_elf_generic_reloc, /* special_function */
999 AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */
1000 FALSE, /* partial_inplace */
1001 0xffc, /* src_mask */
1002 0xffc, /* dst_mask */
1003 FALSE), /* pcrel_offset */
1005 /* Lower 16 bits of GOT offset for the symbol. */
1006 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */
1008 2, /* size (0 = byte, 1 = short, 2 = long) */
1010 FALSE, /* pc_relative */
1012 complain_overflow_dont, /* complain_on_overflow */
1013 bfd_elf_generic_reloc, /* special_function */
1014 AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */
1015 FALSE, /* partial_inplace */
1016 0xffff, /* src_mask */
1017 0xffff, /* dst_mask */
1018 FALSE), /* pcrel_offset */
1020 /* Higher 16 bits of GOT offset for the symbol. */
1021 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */
1022 16, /* rightshift */
1023 2, /* size (0 = byte, 1 = short, 2 = long) */
1025 FALSE, /* pc_relative */
1027 complain_overflow_unsigned, /* complain_on_overflow */
1028 bfd_elf_generic_reloc, /* special_function */
1029 AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */
1030 FALSE, /* partial_inplace */
1031 0xffff, /* src_mask */
1032 0xffff, /* dst_mask */
1033 FALSE), /* pcrel_offset */
1035 /* LD64: GOT offset for the symbol. */
1036 HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */
1038 2, /* size (0 = byte, 1 = short, 2 = long) */
1040 FALSE, /* pc_relative */
1042 complain_overflow_unsigned, /* complain_on_overflow */
1043 bfd_elf_generic_reloc, /* special_function */
1044 AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */
1045 FALSE, /* partial_inplace */
1046 0x7ff8, /* src_mask */
1047 0x7ff8, /* dst_mask */
1048 FALSE), /* pcrel_offset */
1050 /* LD32: GOT offset to the page address of GOT table.
1051 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
1052 HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */
1054 2, /* size (0 = byte, 1 = short, 2 = long) */
1056 FALSE, /* pc_relative */
1058 complain_overflow_unsigned, /* complain_on_overflow */
1059 bfd_elf_generic_reloc, /* special_function */
1060 AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */
1061 FALSE, /* partial_inplace */
1062 0x5ffc, /* src_mask */
1063 0x5ffc, /* dst_mask */
1064 FALSE), /* pcrel_offset */
1066 /* LD64: GOT offset to the page address of GOT table.
1067 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
1068 HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */
1070 2, /* size (0 = byte, 1 = short, 2 = long) */
1072 FALSE, /* pc_relative */
1074 complain_overflow_unsigned, /* complain_on_overflow */
1075 bfd_elf_generic_reloc, /* special_function */
1076 AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */
1077 FALSE, /* partial_inplace */
1078 0x7ff8, /* src_mask */
1079 0x7ff8, /* dst_mask */
1080 FALSE), /* pcrel_offset */
1082 /* Get to the page for the GOT entry for the symbol
1083 (G(S) - P) using an ADRP instruction. */
1084 HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */
1085 12, /* rightshift */
1086 2, /* size (0 = byte, 1 = short, 2 = long) */
1088 TRUE, /* pc_relative */
1090 complain_overflow_dont, /* complain_on_overflow */
1091 bfd_elf_generic_reloc, /* special_function */
1092 AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */
1093 FALSE, /* partial_inplace */
1094 0x1fffff, /* src_mask */
1095 0x1fffff, /* dst_mask */
1096 TRUE), /* pcrel_offset */
1098 HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */
1100 2, /* size (0 = byte, 1 = short, 2 = long) */
1102 TRUE, /* pc_relative */
1104 complain_overflow_dont, /* complain_on_overflow */
1105 bfd_elf_generic_reloc, /* special_function */
1106 AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */
1107 FALSE, /* partial_inplace */
1108 0x1fffff, /* src_mask */
1109 0x1fffff, /* dst_mask */
1110 TRUE), /* pcrel_offset */
1112 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1113 HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1117 FALSE, /* pc_relative */
1119 complain_overflow_dont, /* complain_on_overflow */
1120 bfd_elf_generic_reloc, /* special_function */
1121 AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */
1122 FALSE, /* partial_inplace */
1123 0xfff, /* src_mask */
1124 0xfff, /* dst_mask */
1125 FALSE), /* pcrel_offset */
1127 /* Lower 16 bits of GOT offset to tls_index. */
1128 HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */
1130 2, /* size (0 = byte, 1 = short, 2 = long) */
1132 FALSE, /* pc_relative */
1134 complain_overflow_dont, /* complain_on_overflow */
1135 bfd_elf_generic_reloc, /* special_function */
1136 AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */
1137 FALSE, /* partial_inplace */
1138 0xffff, /* src_mask */
1139 0xffff, /* dst_mask */
1140 FALSE), /* pcrel_offset */
1142 /* Higher 16 bits of GOT offset to tls_index. */
1143 HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */
1144 16, /* rightshift */
1145 2, /* size (0 = byte, 1 = short, 2 = long) */
1147 FALSE, /* pc_relative */
1149 complain_overflow_unsigned, /* complain_on_overflow */
1150 bfd_elf_generic_reloc, /* special_function */
1151 AARCH64_R_STR (TLSGD_MOVW_G1), /* name */
1152 FALSE, /* partial_inplace */
1153 0xffff, /* src_mask */
1154 0xffff, /* dst_mask */
1155 FALSE), /* pcrel_offset */
1157 HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */
1158 12, /* rightshift */
1159 2, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE, /* pc_relative */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 bfd_elf_generic_reloc, /* special_function */
1165 AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */
1166 FALSE, /* partial_inplace */
1167 0x1fffff, /* src_mask */
1168 0x1fffff, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1171 HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */
1173 2, /* size (0 = byte, 1 = short, 2 = long) */
1175 FALSE, /* pc_relative */
1177 complain_overflow_dont, /* complain_on_overflow */
1178 bfd_elf_generic_reloc, /* special_function */
1179 AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */
1180 FALSE, /* partial_inplace */
1181 0xff8, /* src_mask */
1182 0xff8, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1185 HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */
1187 2, /* size (0 = byte, 1 = short, 2 = long) */
1189 FALSE, /* pc_relative */
1191 complain_overflow_dont, /* complain_on_overflow */
1192 bfd_elf_generic_reloc, /* special_function */
1193 AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */
1194 FALSE, /* partial_inplace */
1195 0xffc, /* src_mask */
1196 0xffc, /* dst_mask */
1197 FALSE), /* pcrel_offset */
1199 HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */
1201 2, /* size (0 = byte, 1 = short, 2 = long) */
1203 FALSE, /* pc_relative */
1205 complain_overflow_dont, /* complain_on_overflow */
1206 bfd_elf_generic_reloc, /* special_function */
1207 AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */
1208 FALSE, /* partial_inplace */
1209 0x1ffffc, /* src_mask */
1210 0x1ffffc, /* dst_mask */
1211 FALSE), /* pcrel_offset */
1213 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */
1215 2, /* size (0 = byte, 1 = short, 2 = long) */
1217 FALSE, /* pc_relative */
1219 complain_overflow_dont, /* complain_on_overflow */
1220 bfd_elf_generic_reloc, /* special_function */
1221 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */
1222 FALSE, /* partial_inplace */
1223 0xffff, /* src_mask */
1224 0xffff, /* dst_mask */
1225 FALSE), /* pcrel_offset */
1227 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */
1228 16, /* rightshift */
1229 2, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE, /* pc_relative */
1233 complain_overflow_unsigned, /* complain_on_overflow */
1234 bfd_elf_generic_reloc, /* special_function */
1235 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */
1236 FALSE, /* partial_inplace */
1237 0xffff, /* src_mask */
1238 0xffff, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1241 /* ADD: bit[23:12] of byte offset to module TLS base address. */
1242 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */
1243 12, /* rightshift */
1244 2, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE, /* pc_relative */
1248 complain_overflow_unsigned, /* complain_on_overflow */
1249 bfd_elf_generic_reloc, /* special_function */
1250 AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */
1251 FALSE, /* partial_inplace */
1252 0xfff, /* src_mask */
1253 0xfff, /* dst_mask */
1254 FALSE), /* pcrel_offset */
1256 /* Unsigned 12 bit byte offset to module TLS base address. */
1257 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */
1259 2, /* size (0 = byte, 1 = short, 2 = long) */
1261 FALSE, /* pc_relative */
1263 complain_overflow_unsigned, /* complain_on_overflow */
1264 bfd_elf_generic_reloc, /* special_function */
1265 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */
1266 FALSE, /* partial_inplace */
1267 0xfff, /* src_mask */
1268 0xfff, /* dst_mask */
1269 FALSE), /* pcrel_offset */
1271 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
1272 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */
1274 2, /* size (0 = byte, 1 = short, 2 = long) */
1276 FALSE, /* pc_relative */
1278 complain_overflow_dont, /* complain_on_overflow */
1279 bfd_elf_generic_reloc, /* special_function */
1280 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */
1281 FALSE, /* partial_inplace */
1282 0xfff, /* src_mask */
1283 0xfff, /* dst_mask */
1284 FALSE), /* pcrel_offset */
1286 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1287 HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */
1289 2, /* size (0 = byte, 1 = short, 2 = long) */
1291 FALSE, /* pc_relative */
1293 complain_overflow_dont, /* complain_on_overflow */
1294 bfd_elf_generic_reloc, /* special_function */
1295 AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */
1296 FALSE, /* partial_inplace */
1297 0xfff, /* src_mask */
1298 0xfff, /* dst_mask */
1299 FALSE), /* pcrel_offset */
1301 /* Get to the page for the GOT entry for the symbol
1302 (G(S) - P) using an ADRP instruction. */
1303 HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */
1304 12, /* rightshift */
1305 2, /* size (0 = byte, 1 = short, 2 = long) */
1307 TRUE, /* pc_relative */
1309 complain_overflow_signed, /* complain_on_overflow */
1310 bfd_elf_generic_reloc, /* special_function */
1311 AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */
1312 FALSE, /* partial_inplace */
1313 0x1fffff, /* src_mask */
1314 0x1fffff, /* dst_mask */
1315 TRUE), /* pcrel_offset */
1317 HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */
1319 2, /* size (0 = byte, 1 = short, 2 = long) */
1321 TRUE, /* pc_relative */
1323 complain_overflow_signed, /* complain_on_overflow */
1324 bfd_elf_generic_reloc, /* special_function */
1325 AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */
1326 FALSE, /* partial_inplace */
1327 0x1fffff, /* src_mask */
1328 0x1fffff, /* dst_mask */
1329 TRUE), /* pcrel_offset */
1331 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1332 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */
1334 2, /* size (0 = byte, 1 = short, 2 = long) */
1336 FALSE, /* pc_relative */
1338 complain_overflow_unsigned, /* complain_on_overflow */
1339 bfd_elf_generic_reloc, /* special_function */
1340 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */
1341 FALSE, /* partial_inplace */
1342 0x1ffc00, /* src_mask */
1343 0x1ffc00, /* dst_mask */
1344 FALSE), /* pcrel_offset */
1346 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
1347 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */
1349 2, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE, /* pc_relative */
1353 complain_overflow_dont, /* complain_on_overflow */
1354 bfd_elf_generic_reloc, /* special_function */
1355 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */
1356 FALSE, /* partial_inplace */
1357 0x1ffc00, /* src_mask */
1358 0x1ffc00, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1361 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1362 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */
1364 2, /* size (0 = byte, 1 = short, 2 = long) */
1366 FALSE, /* pc_relative */
1368 complain_overflow_unsigned, /* complain_on_overflow */
1369 bfd_elf_generic_reloc, /* special_function */
1370 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */
1371 FALSE, /* partial_inplace */
1372 0x3ffc00, /* src_mask */
1373 0x3ffc00, /* dst_mask */
1374 FALSE), /* pcrel_offset */
1376 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
1377 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */
1379 2, /* size (0 = byte, 1 = short, 2 = long) */
1381 FALSE, /* pc_relative */
1383 complain_overflow_dont, /* complain_on_overflow */
1384 bfd_elf_generic_reloc, /* special_function */
1385 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */
1386 FALSE, /* partial_inplace */
1387 0xffc00, /* src_mask */
1388 0xffc00, /* dst_mask */
1389 FALSE), /* pcrel_offset */
1391 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1392 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */
1394 2, /* size (0 = byte, 1 = short, 2 = long) */
1396 FALSE, /* pc_relative */
1398 complain_overflow_unsigned, /* complain_on_overflow */
1399 bfd_elf_generic_reloc, /* special_function */
1400 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */
1401 FALSE, /* partial_inplace */
1402 0x3ffc00, /* src_mask */
1403 0x3ffc00, /* dst_mask */
1404 FALSE), /* pcrel_offset */
1406 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
1407 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */
1409 2, /* size (0 = byte, 1 = short, 2 = long) */
1411 FALSE, /* pc_relative */
1413 complain_overflow_dont, /* complain_on_overflow */
1414 bfd_elf_generic_reloc, /* special_function */
1415 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */
1416 FALSE, /* partial_inplace */
1417 0x7fc00, /* src_mask */
1418 0x7fc00, /* dst_mask */
1419 FALSE), /* pcrel_offset */
1421 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1422 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */
1424 2, /* size (0 = byte, 1 = short, 2 = long) */
1426 FALSE, /* pc_relative */
1428 complain_overflow_unsigned, /* complain_on_overflow */
1429 bfd_elf_generic_reloc, /* special_function */
1430 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */
1431 FALSE, /* partial_inplace */
1432 0x3ffc00, /* src_mask */
1433 0x3ffc00, /* dst_mask */
1434 FALSE), /* pcrel_offset */
1436 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
1437 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */
1439 2, /* size (0 = byte, 1 = short, 2 = long) */
1441 FALSE, /* pc_relative */
1443 complain_overflow_dont, /* complain_on_overflow */
1444 bfd_elf_generic_reloc, /* special_function */
1445 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */
1446 FALSE, /* partial_inplace */
1447 0x3ffc00, /* src_mask */
1448 0x3ffc00, /* dst_mask */
1449 FALSE), /* pcrel_offset */
1451 /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
1452 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */
1454 2, /* size (0 = byte, 1 = short, 2 = long) */
1456 FALSE, /* pc_relative */
1458 complain_overflow_unsigned, /* complain_on_overflow */
1459 bfd_elf_generic_reloc, /* special_function */
1460 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */
1461 FALSE, /* partial_inplace */
1462 0xffff, /* src_mask */
1463 0xffff, /* dst_mask */
1464 FALSE), /* pcrel_offset */
1466 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
1467 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */
1469 2, /* size (0 = byte, 1 = short, 2 = long) */
1471 FALSE, /* pc_relative */
1473 complain_overflow_dont, /* complain_on_overflow */
1474 bfd_elf_generic_reloc, /* special_function */
1475 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */
1476 FALSE, /* partial_inplace */
1477 0xffff, /* src_mask */
1478 0xffff, /* dst_mask */
1479 FALSE), /* pcrel_offset */
1481 /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
1482 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */
1483 16, /* rightshift */
1484 2, /* size (0 = byte, 1 = short, 2 = long) */
1486 FALSE, /* pc_relative */
1488 complain_overflow_unsigned, /* complain_on_overflow */
1489 bfd_elf_generic_reloc, /* special_function */
1490 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */
1491 FALSE, /* partial_inplace */
1492 0xffff, /* src_mask */
1493 0xffff, /* dst_mask */
1494 FALSE), /* pcrel_offset */
1496 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
1497 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */
1498 16, /* rightshift */
1499 2, /* size (0 = byte, 1 = short, 2 = long) */
1501 FALSE, /* pc_relative */
1503 complain_overflow_dont, /* complain_on_overflow */
1504 bfd_elf_generic_reloc, /* special_function */
1505 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */
1506 FALSE, /* partial_inplace */
1507 0xffff, /* src_mask */
1508 0xffff, /* dst_mask */
1509 FALSE), /* pcrel_offset */
1511 /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
1512 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */
1513 32, /* rightshift */
1514 2, /* size (0 = byte, 1 = short, 2 = long) */
1516 FALSE, /* pc_relative */
1518 complain_overflow_unsigned, /* complain_on_overflow */
1519 bfd_elf_generic_reloc, /* special_function */
1520 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */
1521 FALSE, /* partial_inplace */
1522 0xffff, /* src_mask */
1523 0xffff, /* dst_mask */
1524 FALSE), /* pcrel_offset */
1526 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */
1527 32, /* rightshift */
1528 2, /* size (0 = byte, 1 = short, 2 = long) */
1530 FALSE, /* pc_relative */
1532 complain_overflow_unsigned, /* complain_on_overflow */
1533 bfd_elf_generic_reloc, /* special_function */
1534 AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */
1535 FALSE, /* partial_inplace */
1536 0xffff, /* src_mask */
1537 0xffff, /* dst_mask */
1538 FALSE), /* pcrel_offset */
1540 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */
1541 16, /* rightshift */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1544 FALSE, /* pc_relative */
1546 complain_overflow_dont, /* complain_on_overflow */
1547 bfd_elf_generic_reloc, /* special_function */
1548 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */
1549 FALSE, /* partial_inplace */
1550 0xffff, /* src_mask */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1554 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */
1555 16, /* rightshift */
1556 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 FALSE, /* pc_relative */
1560 complain_overflow_dont, /* complain_on_overflow */
1561 bfd_elf_generic_reloc, /* special_function */
1562 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */
1563 FALSE, /* partial_inplace */
1564 0xffff, /* src_mask */
1565 0xffff, /* dst_mask */
1566 FALSE), /* pcrel_offset */
1568 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */
1570 2, /* size (0 = byte, 1 = short, 2 = long) */
1572 FALSE, /* pc_relative */
1574 complain_overflow_dont, /* complain_on_overflow */
1575 bfd_elf_generic_reloc, /* special_function */
1576 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */
1577 FALSE, /* partial_inplace */
1578 0xffff, /* src_mask */
1579 0xffff, /* dst_mask */
1580 FALSE), /* pcrel_offset */
1582 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */
1584 2, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE, /* pc_relative */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 bfd_elf_generic_reloc, /* special_function */
1590 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */
1591 FALSE, /* partial_inplace */
1592 0xffff, /* src_mask */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1596 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */
1597 12, /* rightshift */
1598 2, /* size (0 = byte, 1 = short, 2 = long) */
1600 FALSE, /* pc_relative */
1602 complain_overflow_unsigned, /* complain_on_overflow */
1603 bfd_elf_generic_reloc, /* special_function */
1604 AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */
1605 FALSE, /* partial_inplace */
1606 0xfff, /* src_mask */
1607 0xfff, /* dst_mask */
1608 FALSE), /* pcrel_offset */
1610 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_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 (TLSLE_ADD_TPREL_LO12), /* name */
1619 FALSE, /* partial_inplace */
1620 0xfff, /* src_mask */
1621 0xfff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1624 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */
1626 2, /* size (0 = byte, 1 = short, 2 = long) */
1628 FALSE, /* pc_relative */
1630 complain_overflow_dont, /* complain_on_overflow */
1631 bfd_elf_generic_reloc, /* special_function */
1632 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */
1633 FALSE, /* partial_inplace */
1634 0xfff, /* src_mask */
1635 0xfff, /* dst_mask */
1636 FALSE), /* pcrel_offset */
1638 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1639 HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12), /* type */
1641 2, /* size (0 = byte, 1 = short, 2 = long) */
1643 FALSE, /* pc_relative */
1645 complain_overflow_unsigned, /* complain_on_overflow */
1646 bfd_elf_generic_reloc, /* special_function */
1647 AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12), /* name */
1648 FALSE, /* partial_inplace */
1649 0x1ffc00, /* src_mask */
1650 0x1ffc00, /* dst_mask */
1651 FALSE), /* pcrel_offset */
1653 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */
1654 HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC), /* type */
1656 2, /* size (0 = byte, 1 = short, 2 = long) */
1658 FALSE, /* pc_relative */
1660 complain_overflow_dont, /* complain_on_overflow */
1661 bfd_elf_generic_reloc, /* special_function */
1662 AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC), /* name */
1663 FALSE, /* partial_inplace */
1664 0x1ffc00, /* src_mask */
1665 0x1ffc00, /* dst_mask */
1666 FALSE), /* pcrel_offset */
1668 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1669 HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12), /* type */
1671 2, /* size (0 = byte, 1 = short, 2 = long) */
1673 FALSE, /* pc_relative */
1675 complain_overflow_unsigned, /* complain_on_overflow */
1676 bfd_elf_generic_reloc, /* special_function */
1677 AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12), /* name */
1678 FALSE, /* partial_inplace */
1679 0xffc00, /* src_mask */
1680 0xffc00, /* dst_mask */
1681 FALSE), /* pcrel_offset */
1683 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */
1684 HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC), /* type */
1686 2, /* size (0 = byte, 1 = short, 2 = long) */
1688 FALSE, /* pc_relative */
1690 complain_overflow_dont, /* complain_on_overflow */
1691 bfd_elf_generic_reloc, /* special_function */
1692 AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC), /* name */
1693 FALSE, /* partial_inplace */
1694 0xffc00, /* src_mask */
1695 0xffc00, /* dst_mask */
1696 FALSE), /* pcrel_offset */
1698 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1699 HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12), /* type */
1701 2, /* size (0 = byte, 1 = short, 2 = long) */
1703 FALSE, /* pc_relative */
1705 complain_overflow_unsigned, /* complain_on_overflow */
1706 bfd_elf_generic_reloc, /* special_function */
1707 AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12), /* name */
1708 FALSE, /* partial_inplace */
1709 0x7fc00, /* src_mask */
1710 0x7fc00, /* dst_mask */
1711 FALSE), /* pcrel_offset */
1713 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */
1714 HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC), /* type */
1716 2, /* size (0 = byte, 1 = short, 2 = long) */
1718 FALSE, /* pc_relative */
1720 complain_overflow_dont, /* complain_on_overflow */
1721 bfd_elf_generic_reloc, /* special_function */
1722 AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC), /* name */
1723 FALSE, /* partial_inplace */
1724 0x7fc00, /* src_mask */
1725 0x7fc00, /* dst_mask */
1726 FALSE), /* pcrel_offset */
1728 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1729 HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12), /* type */
1731 2, /* size (0 = byte, 1 = short, 2 = long) */
1733 FALSE, /* pc_relative */
1735 complain_overflow_unsigned, /* complain_on_overflow */
1736 bfd_elf_generic_reloc, /* special_function */
1737 AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12), /* name */
1738 FALSE, /* partial_inplace */
1739 0x3ffc00, /* src_mask */
1740 0x3ffc00, /* dst_mask */
1741 FALSE), /* pcrel_offset */
1743 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */
1744 HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC), /* type */
1746 2, /* size (0 = byte, 1 = short, 2 = long) */
1748 FALSE, /* pc_relative */
1750 complain_overflow_dont, /* complain_on_overflow */
1751 bfd_elf_generic_reloc, /* special_function */
1752 AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC), /* name */
1753 FALSE, /* partial_inplace */
1754 0x3ffc00, /* src_mask */
1755 0x3ffc00, /* dst_mask */
1756 FALSE), /* pcrel_offset */
1758 HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */
1760 2, /* size (0 = byte, 1 = short, 2 = long) */
1762 TRUE, /* pc_relative */
1764 complain_overflow_dont, /* complain_on_overflow */
1765 bfd_elf_generic_reloc, /* special_function */
1766 AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */
1767 FALSE, /* partial_inplace */
1768 0x0ffffe0, /* src_mask */
1769 0x0ffffe0, /* dst_mask */
1770 TRUE), /* pcrel_offset */
1772 HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */
1774 2, /* size (0 = byte, 1 = short, 2 = long) */
1776 TRUE, /* pc_relative */
1778 complain_overflow_dont, /* complain_on_overflow */
1779 bfd_elf_generic_reloc, /* special_function */
1780 AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */
1781 FALSE, /* partial_inplace */
1782 0x1fffff, /* src_mask */
1783 0x1fffff, /* dst_mask */
1784 TRUE), /* pcrel_offset */
1786 /* Get to the page for the GOT entry for the symbol
1787 (G(S) - P) using an ADRP instruction. */
1788 HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */
1789 12, /* rightshift */
1790 2, /* size (0 = byte, 1 = short, 2 = long) */
1792 TRUE, /* pc_relative */
1794 complain_overflow_dont, /* complain_on_overflow */
1795 bfd_elf_generic_reloc, /* special_function */
1796 AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */
1797 FALSE, /* partial_inplace */
1798 0x1fffff, /* src_mask */
1799 0x1fffff, /* dst_mask */
1800 TRUE), /* pcrel_offset */
1802 /* LD64: GOT offset G(S) & 0xff8. */
1803 HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */
1805 2, /* size (0 = byte, 1 = short, 2 = long) */
1807 FALSE, /* pc_relative */
1809 complain_overflow_dont, /* complain_on_overflow */
1810 bfd_elf_generic_reloc, /* special_function */
1811 AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */
1812 FALSE, /* partial_inplace */
1813 0xff8, /* src_mask */
1814 0xff8, /* dst_mask */
1815 FALSE), /* pcrel_offset */
1817 /* LD32: GOT offset G(S) & 0xffc. */
1818 HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */
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 (TLSDESC_LD32_LO12_NC), /* name */
1827 FALSE, /* partial_inplace */
1828 0xffc, /* src_mask */
1829 0xffc, /* dst_mask */
1830 FALSE), /* pcrel_offset */
1832 /* ADD: GOT offset G(S) & 0xfff. */
1833 HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */
1835 2, /* size (0 = byte, 1 = short, 2 = long) */
1837 FALSE, /* pc_relative */
1839 complain_overflow_dont,/* complain_on_overflow */
1840 bfd_elf_generic_reloc, /* special_function */
1841 AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */
1842 FALSE, /* partial_inplace */
1843 0xfff, /* src_mask */
1844 0xfff, /* dst_mask */
1845 FALSE), /* pcrel_offset */
1847 HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */
1848 16, /* rightshift */
1849 2, /* size (0 = byte, 1 = short, 2 = long) */
1851 FALSE, /* pc_relative */
1853 complain_overflow_unsigned, /* complain_on_overflow */
1854 bfd_elf_generic_reloc, /* special_function */
1855 AARCH64_R_STR (TLSDESC_OFF_G1), /* name */
1856 FALSE, /* partial_inplace */
1857 0xffff, /* src_mask */
1858 0xffff, /* dst_mask */
1859 FALSE), /* pcrel_offset */
1861 HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */
1863 2, /* size (0 = byte, 1 = short, 2 = long) */
1865 FALSE, /* pc_relative */
1867 complain_overflow_dont, /* complain_on_overflow */
1868 bfd_elf_generic_reloc, /* special_function */
1869 AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */
1870 FALSE, /* partial_inplace */
1871 0xffff, /* src_mask */
1872 0xffff, /* dst_mask */
1873 FALSE), /* pcrel_offset */
1875 HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */
1877 2, /* size (0 = byte, 1 = short, 2 = long) */
1879 FALSE, /* pc_relative */
1881 complain_overflow_dont, /* complain_on_overflow */
1882 bfd_elf_generic_reloc, /* special_function */
1883 AARCH64_R_STR (TLSDESC_LDR), /* name */
1884 FALSE, /* partial_inplace */
1887 FALSE), /* pcrel_offset */
1889 HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */
1891 2, /* size (0 = byte, 1 = short, 2 = long) */
1893 FALSE, /* pc_relative */
1895 complain_overflow_dont, /* complain_on_overflow */
1896 bfd_elf_generic_reloc, /* special_function */
1897 AARCH64_R_STR (TLSDESC_ADD), /* name */
1898 FALSE, /* partial_inplace */
1901 FALSE), /* pcrel_offset */
1903 HOWTO (AARCH64_R (TLSDESC_CALL), /* type */
1905 2, /* size (0 = byte, 1 = short, 2 = long) */
1907 FALSE, /* pc_relative */
1909 complain_overflow_dont, /* complain_on_overflow */
1910 bfd_elf_generic_reloc, /* special_function */
1911 AARCH64_R_STR (TLSDESC_CALL), /* name */
1912 FALSE, /* partial_inplace */
1915 FALSE), /* pcrel_offset */
1917 HOWTO (AARCH64_R (COPY), /* type */
1919 2, /* size (0 = byte, 1 = short, 2 = long) */
1921 FALSE, /* pc_relative */
1923 complain_overflow_bitfield, /* complain_on_overflow */
1924 bfd_elf_generic_reloc, /* special_function */
1925 AARCH64_R_STR (COPY), /* name */
1926 TRUE, /* partial_inplace */
1927 0xffffffff, /* src_mask */
1928 0xffffffff, /* dst_mask */
1929 FALSE), /* pcrel_offset */
1931 HOWTO (AARCH64_R (GLOB_DAT), /* type */
1933 2, /* size (0 = byte, 1 = short, 2 = long) */
1935 FALSE, /* pc_relative */
1937 complain_overflow_bitfield, /* complain_on_overflow */
1938 bfd_elf_generic_reloc, /* special_function */
1939 AARCH64_R_STR (GLOB_DAT), /* name */
1940 TRUE, /* partial_inplace */
1941 0xffffffff, /* src_mask */
1942 0xffffffff, /* dst_mask */
1943 FALSE), /* pcrel_offset */
1945 HOWTO (AARCH64_R (JUMP_SLOT), /* type */
1947 2, /* size (0 = byte, 1 = short, 2 = long) */
1949 FALSE, /* pc_relative */
1951 complain_overflow_bitfield, /* complain_on_overflow */
1952 bfd_elf_generic_reloc, /* special_function */
1953 AARCH64_R_STR (JUMP_SLOT), /* name */
1954 TRUE, /* partial_inplace */
1955 0xffffffff, /* src_mask */
1956 0xffffffff, /* dst_mask */
1957 FALSE), /* pcrel_offset */
1959 HOWTO (AARCH64_R (RELATIVE), /* type */
1961 2, /* size (0 = byte, 1 = short, 2 = long) */
1963 FALSE, /* pc_relative */
1965 complain_overflow_bitfield, /* complain_on_overflow */
1966 bfd_elf_generic_reloc, /* special_function */
1967 AARCH64_R_STR (RELATIVE), /* name */
1968 TRUE, /* partial_inplace */
1969 ALL_ONES, /* src_mask */
1970 ALL_ONES, /* dst_mask */
1971 FALSE), /* pcrel_offset */
1973 HOWTO (AARCH64_R (TLS_DTPMOD), /* type */
1975 2, /* size (0 = byte, 1 = short, 2 = long) */
1977 FALSE, /* pc_relative */
1979 complain_overflow_dont, /* complain_on_overflow */
1980 bfd_elf_generic_reloc, /* special_function */
1982 AARCH64_R_STR (TLS_DTPMOD64), /* name */
1984 AARCH64_R_STR (TLS_DTPMOD), /* name */
1986 FALSE, /* partial_inplace */
1988 ALL_ONES, /* dst_mask */
1989 FALSE), /* pc_reloffset */
1991 HOWTO (AARCH64_R (TLS_DTPREL), /* type */
1993 2, /* size (0 = byte, 1 = short, 2 = long) */
1995 FALSE, /* pc_relative */
1997 complain_overflow_dont, /* complain_on_overflow */
1998 bfd_elf_generic_reloc, /* special_function */
2000 AARCH64_R_STR (TLS_DTPREL64), /* name */
2002 AARCH64_R_STR (TLS_DTPREL), /* name */
2004 FALSE, /* partial_inplace */
2006 ALL_ONES, /* dst_mask */
2007 FALSE), /* pcrel_offset */
2009 HOWTO (AARCH64_R (TLS_TPREL), /* type */
2011 2, /* size (0 = byte, 1 = short, 2 = long) */
2013 FALSE, /* pc_relative */
2015 complain_overflow_dont, /* complain_on_overflow */
2016 bfd_elf_generic_reloc, /* special_function */
2018 AARCH64_R_STR (TLS_TPREL64), /* name */
2020 AARCH64_R_STR (TLS_TPREL), /* name */
2022 FALSE, /* partial_inplace */
2024 ALL_ONES, /* dst_mask */
2025 FALSE), /* pcrel_offset */
2027 HOWTO (AARCH64_R (TLSDESC), /* type */
2029 2, /* size (0 = byte, 1 = short, 2 = long) */
2031 FALSE, /* pc_relative */
2033 complain_overflow_dont, /* complain_on_overflow */
2034 bfd_elf_generic_reloc, /* special_function */
2035 AARCH64_R_STR (TLSDESC), /* name */
2036 FALSE, /* partial_inplace */
2038 ALL_ONES, /* dst_mask */
2039 FALSE), /* pcrel_offset */
2041 HOWTO (AARCH64_R (IRELATIVE), /* type */
2043 2, /* size (0 = byte, 1 = short, 2 = long) */
2045 FALSE, /* pc_relative */
2047 complain_overflow_bitfield, /* complain_on_overflow */
2048 bfd_elf_generic_reloc, /* special_function */
2049 AARCH64_R_STR (IRELATIVE), /* name */
2050 FALSE, /* partial_inplace */
2052 ALL_ONES, /* dst_mask */
2053 FALSE), /* pcrel_offset */
2058 static reloc_howto_type elfNN_aarch64_howto_none =
2059 HOWTO (R_AARCH64_NONE, /* type */
2061 3, /* size (0 = byte, 1 = short, 2 = long) */
2063 FALSE, /* pc_relative */
2065 complain_overflow_dont,/* complain_on_overflow */
2066 bfd_elf_generic_reloc, /* special_function */
2067 "R_AARCH64_NONE", /* name */
2068 FALSE, /* partial_inplace */
2071 FALSE); /* pcrel_offset */
2073 /* Given HOWTO, return the bfd internal relocation enumerator. */
2075 static bfd_reloc_code_real_type
2076 elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto)
2079 = (int) ARRAY_SIZE (elfNN_aarch64_howto_table);
2080 const ptrdiff_t offset
2081 = howto - elfNN_aarch64_howto_table;
2083 if (offset > 0 && offset < size - 1)
2084 return BFD_RELOC_AARCH64_RELOC_START + offset;
2086 if (howto == &elfNN_aarch64_howto_none)
2087 return BFD_RELOC_AARCH64_NONE;
2089 return BFD_RELOC_AARCH64_RELOC_START;
2092 /* Given R_TYPE, return the bfd internal relocation enumerator. */
2094 static bfd_reloc_code_real_type
2095 elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type)
2097 static bfd_boolean initialized_p = FALSE;
2098 /* Indexed by R_TYPE, values are offsets in the howto_table. */
2099 static unsigned int offsets[R_AARCH64_end];
2105 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
2106 if (elfNN_aarch64_howto_table[i].type != 0)
2107 offsets[elfNN_aarch64_howto_table[i].type] = i;
2109 initialized_p = TRUE;
2112 if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL)
2113 return BFD_RELOC_AARCH64_NONE;
2115 /* PR 17512: file: b371e70a. */
2116 if (r_type >= R_AARCH64_end)
2118 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2120 bfd_set_error (bfd_error_bad_value);
2121 return BFD_RELOC_AARCH64_NONE;
2124 return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type];
2127 struct elf_aarch64_reloc_map
2129 bfd_reloc_code_real_type from;
2130 bfd_reloc_code_real_type to;
2133 /* Map bfd generic reloc to AArch64-specific reloc. */
2134 static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] =
2136 {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE},
2138 /* Basic data relocations. */
2139 {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN},
2140 {BFD_RELOC_64, BFD_RELOC_AARCH64_64},
2141 {BFD_RELOC_32, BFD_RELOC_AARCH64_32},
2142 {BFD_RELOC_16, BFD_RELOC_AARCH64_16},
2143 {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL},
2144 {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL},
2145 {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL},
2148 /* Given the bfd internal relocation enumerator in CODE, return the
2149 corresponding howto entry. */
2151 static reloc_howto_type *
2152 elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code)
2156 /* Convert bfd generic reloc to AArch64-specific reloc. */
2157 if (code < BFD_RELOC_AARCH64_RELOC_START
2158 || code > BFD_RELOC_AARCH64_RELOC_END)
2159 for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++)
2160 if (elf_aarch64_reloc_map[i].from == code)
2162 code = elf_aarch64_reloc_map[i].to;
2166 if (code > BFD_RELOC_AARCH64_RELOC_START
2167 && code < BFD_RELOC_AARCH64_RELOC_END)
2168 if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type)
2169 return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START];
2171 if (code == BFD_RELOC_AARCH64_NONE)
2172 return &elfNN_aarch64_howto_none;
2177 static reloc_howto_type *
2178 elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type)
2180 bfd_reloc_code_real_type val;
2181 reloc_howto_type *howto;
2186 bfd_set_error (bfd_error_bad_value);
2191 if (r_type == R_AARCH64_NONE)
2192 return &elfNN_aarch64_howto_none;
2194 val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type);
2195 howto = elfNN_aarch64_howto_from_bfd_reloc (val);
2200 bfd_set_error (bfd_error_bad_value);
2205 elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc,
2206 Elf_Internal_Rela *elf_reloc)
2208 unsigned int r_type;
2210 r_type = ELFNN_R_TYPE (elf_reloc->r_info);
2211 bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type);
2213 if (bfd_reloc->howto == NULL)
2215 /* xgettext:c-format */
2216 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type);
2222 static reloc_howto_type *
2223 elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2224 bfd_reloc_code_real_type code)
2226 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code);
2231 bfd_set_error (bfd_error_bad_value);
2235 static reloc_howto_type *
2236 elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2241 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
2242 if (elfNN_aarch64_howto_table[i].name != NULL
2243 && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0)
2244 return &elfNN_aarch64_howto_table[i];
2249 #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
2250 #define TARGET_LITTLE_NAME "elfNN-littleaarch64"
2251 #define TARGET_BIG_SYM aarch64_elfNN_be_vec
2252 #define TARGET_BIG_NAME "elfNN-bigaarch64"
2254 /* The linker script knows the section names for placement.
2255 The entry_names are used to do simple name mangling on the stubs.
2256 Given a function name, and its type, the stub can be found. The
2257 name can be changed. The only requirement is the %s be present. */
2258 #define STUB_ENTRY_NAME "__%s_veneer"
2260 /* The name of the dynamic interpreter. This is put in the .interp
2262 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2264 #define AARCH64_MAX_FWD_BRANCH_OFFSET \
2265 (((1 << 25) - 1) << 2)
2266 #define AARCH64_MAX_BWD_BRANCH_OFFSET \
2269 #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
2270 #define AARCH64_MIN_ADRP_IMM (-(1 << 20))
2273 aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place)
2275 bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12;
2276 return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM;
2280 aarch64_valid_branch_p (bfd_vma value, bfd_vma place)
2282 bfd_signed_vma offset = (bfd_signed_vma) (value - place);
2283 return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET
2284 && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET);
2287 static const uint32_t aarch64_adrp_branch_stub [] =
2289 0x90000010, /* adrp ip0, X */
2290 /* R_AARCH64_ADR_HI21_PCREL(X) */
2291 0x91000210, /* add ip0, ip0, :lo12:X */
2292 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2293 0xd61f0200, /* br ip0 */
2296 static const uint32_t aarch64_long_branch_stub[] =
2299 0x58000090, /* ldr ip0, 1f */
2301 0x18000090, /* ldr wip0, 1f */
2303 0x10000011, /* adr ip1, #0 */
2304 0x8b110210, /* add ip0, ip0, ip1 */
2305 0xd61f0200, /* br ip0 */
2306 0x00000000, /* 1: .xword or .word
2307 R_AARCH64_PRELNN(X) + 12
2312 static const uint32_t aarch64_erratum_835769_stub[] =
2314 0x00000000, /* Placeholder for multiply accumulate. */
2315 0x14000000, /* b <label> */
2318 static const uint32_t aarch64_erratum_843419_stub[] =
2320 0x00000000, /* Placeholder for LDR instruction. */
2321 0x14000000, /* b <label> */
2324 /* Section name for stubs is the associated section name plus this
2326 #define STUB_SUFFIX ".stub"
2328 enum elf_aarch64_stub_type
2331 aarch64_stub_adrp_branch,
2332 aarch64_stub_long_branch,
2333 aarch64_stub_erratum_835769_veneer,
2334 aarch64_stub_erratum_843419_veneer,
2337 struct elf_aarch64_stub_hash_entry
2339 /* Base hash table entry structure. */
2340 struct bfd_hash_entry root;
2342 /* The stub section. */
2345 /* Offset within stub_sec of the beginning of this stub. */
2346 bfd_vma stub_offset;
2348 /* Given the symbol's value and its section we can determine its final
2349 value when building the stubs (so the stub knows where to jump). */
2350 bfd_vma target_value;
2351 asection *target_section;
2353 enum elf_aarch64_stub_type stub_type;
2355 /* The symbol table entry, if any, that this was derived from. */
2356 struct elf_aarch64_link_hash_entry *h;
2358 /* Destination symbol type */
2359 unsigned char st_type;
2361 /* Where this stub is being called from, or, in the case of combined
2362 stub sections, the first input section in the group. */
2365 /* The name for the local symbol at the start of this stub. The
2366 stub name in the hash table has to be unique; this does not, so
2367 it can be friendlier. */
2370 /* The instruction which caused this stub to be generated (only valid for
2371 erratum 835769 workaround stubs at present). */
2372 uint32_t veneered_insn;
2374 /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
2375 bfd_vma adrp_offset;
2378 /* Used to build a map of a section. This is required for mixed-endian
2381 typedef struct elf_elf_section_map
2386 elf_aarch64_section_map;
2389 typedef struct _aarch64_elf_section_data
2391 struct bfd_elf_section_data elf;
2392 unsigned int mapcount;
2393 unsigned int mapsize;
2394 elf_aarch64_section_map *map;
2396 _aarch64_elf_section_data;
2398 #define elf_aarch64_section_data(sec) \
2399 ((_aarch64_elf_section_data *) elf_section_data (sec))
2401 /* The size of the thread control block which is defined to be two pointers. */
2402 #define TCB_SIZE (ARCH_SIZE/8)*2
2404 struct elf_aarch64_local_symbol
2406 unsigned int got_type;
2407 bfd_signed_vma got_refcount;
2410 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
2411 offset is from the end of the jump table and reserved entries
2414 The magic value (bfd_vma) -1 indicates that an offset has not be
2416 bfd_vma tlsdesc_got_jump_table_offset;
2419 struct elf_aarch64_obj_tdata
2421 struct elf_obj_tdata root;
2423 /* local symbol descriptors */
2424 struct elf_aarch64_local_symbol *locals;
2426 /* Zero to warn when linking objects with incompatible enum sizes. */
2427 int no_enum_size_warning;
2429 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2430 int no_wchar_size_warning;
2433 #define elf_aarch64_tdata(bfd) \
2434 ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
2436 #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
2438 #define is_aarch64_elf(bfd) \
2439 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2440 && elf_tdata (bfd) != NULL \
2441 && elf_object_id (bfd) == AARCH64_ELF_DATA)
2444 elfNN_aarch64_mkobject (bfd *abfd)
2446 return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata),
2450 #define elf_aarch64_hash_entry(ent) \
2451 ((struct elf_aarch64_link_hash_entry *)(ent))
2453 #define GOT_UNKNOWN 0
2454 #define GOT_NORMAL 1
2455 #define GOT_TLS_GD 2
2456 #define GOT_TLS_IE 4
2457 #define GOT_TLSDESC_GD 8
2459 #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
2461 /* AArch64 ELF linker hash entry. */
2462 struct elf_aarch64_link_hash_entry
2464 struct elf_link_hash_entry root;
2466 /* Track dynamic relocs copied for this symbol. */
2467 struct elf_dyn_relocs *dyn_relocs;
2469 /* Since PLT entries have variable size, we need to record the
2470 index into .got.plt instead of recomputing it from the PLT
2472 bfd_signed_vma plt_got_offset;
2474 /* Bit mask representing the type of GOT entry(s) if any required by
2476 unsigned int got_type;
2478 /* A pointer to the most recently used stub hash entry against this
2480 struct elf_aarch64_stub_hash_entry *stub_cache;
2482 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2483 is from the end of the jump table and reserved entries within the PLTGOT.
2485 The magic value (bfd_vma) -1 indicates that an offset has not
2487 bfd_vma tlsdesc_got_jump_table_offset;
2491 elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
2493 unsigned long r_symndx)
2496 return elf_aarch64_hash_entry (h)->got_type;
2498 if (! elf_aarch64_locals (abfd))
2501 return elf_aarch64_locals (abfd)[r_symndx].got_type;
2504 /* Get the AArch64 elf linker hash table from a link_info structure. */
2505 #define elf_aarch64_hash_table(info) \
2506 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
2508 #define aarch64_stub_hash_lookup(table, string, create, copy) \
2509 ((struct elf_aarch64_stub_hash_entry *) \
2510 bfd_hash_lookup ((table), (string), (create), (copy)))
2512 /* AArch64 ELF linker hash table. */
2513 struct elf_aarch64_link_hash_table
2515 /* The main hash table. */
2516 struct elf_link_hash_table root;
2518 /* Nonzero to force PIC branch veneers. */
2521 /* Fix erratum 835769. */
2522 int fix_erratum_835769;
2524 /* Fix erratum 843419. */
2525 int fix_erratum_843419;
2527 /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */
2528 int fix_erratum_843419_adr;
2530 /* Don't apply link-time values for dynamic relocations. */
2531 int no_apply_dynamic_relocs;
2533 /* The number of bytes in the initial entry in the PLT. */
2534 bfd_size_type plt_header_size;
2536 /* The number of bytes in the subsequent PLT etries. */
2537 bfd_size_type plt_entry_size;
2539 /* Small local sym cache. */
2540 struct sym_cache sym_cache;
2542 /* For convenience in allocate_dynrelocs. */
2545 /* The amount of space used by the reserved portion of the sgotplt
2546 section, plus whatever space is used by the jump slots. */
2547 bfd_vma sgotplt_jump_table_size;
2549 /* The stub hash table. */
2550 struct bfd_hash_table stub_hash_table;
2552 /* Linker stub bfd. */
2555 /* Linker call-backs. */
2556 asection *(*add_stub_section) (const char *, asection *);
2557 void (*layout_sections_again) (void);
2559 /* Array to keep track of which stub sections have been created, and
2560 information on stub grouping. */
2563 /* This is the section to which stubs in the group will be
2566 /* The stub section. */
2570 /* Assorted information used by elfNN_aarch64_size_stubs. */
2571 unsigned int bfd_count;
2572 unsigned int top_index;
2573 asection **input_list;
2575 /* The offset into splt of the PLT entry for the TLS descriptor
2576 resolver. Special values are 0, if not necessary (or not found
2577 to be necessary yet), and -1 if needed but not determined
2579 bfd_vma tlsdesc_plt;
2581 /* The GOT offset for the lazy trampoline. Communicated to the
2582 loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
2583 indicates an offset is not allocated. */
2584 bfd_vma dt_tlsdesc_got;
2586 /* Used by local STT_GNU_IFUNC symbols. */
2587 htab_t loc_hash_table;
2588 void * loc_hash_memory;
2591 /* Create an entry in an AArch64 ELF linker hash table. */
2593 static struct bfd_hash_entry *
2594 elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
2595 struct bfd_hash_table *table,
2598 struct elf_aarch64_link_hash_entry *ret =
2599 (struct elf_aarch64_link_hash_entry *) entry;
2601 /* Allocate the structure if it has not already been allocated by a
2604 ret = bfd_hash_allocate (table,
2605 sizeof (struct elf_aarch64_link_hash_entry));
2607 return (struct bfd_hash_entry *) ret;
2609 /* Call the allocation method of the superclass. */
2610 ret = ((struct elf_aarch64_link_hash_entry *)
2611 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2615 ret->dyn_relocs = NULL;
2616 ret->got_type = GOT_UNKNOWN;
2617 ret->plt_got_offset = (bfd_vma) - 1;
2618 ret->stub_cache = NULL;
2619 ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
2622 return (struct bfd_hash_entry *) ret;
2625 /* Initialize an entry in the stub hash table. */
2627 static struct bfd_hash_entry *
2628 stub_hash_newfunc (struct bfd_hash_entry *entry,
2629 struct bfd_hash_table *table, const char *string)
2631 /* Allocate the structure if it has not already been allocated by a
2635 entry = bfd_hash_allocate (table,
2637 elf_aarch64_stub_hash_entry));
2642 /* Call the allocation method of the superclass. */
2643 entry = bfd_hash_newfunc (entry, table, string);
2646 struct elf_aarch64_stub_hash_entry *eh;
2648 /* Initialize the local fields. */
2649 eh = (struct elf_aarch64_stub_hash_entry *) entry;
2650 eh->adrp_offset = 0;
2651 eh->stub_sec = NULL;
2652 eh->stub_offset = 0;
2653 eh->target_value = 0;
2654 eh->target_section = NULL;
2655 eh->stub_type = aarch64_stub_none;
2663 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
2664 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2665 as global symbol. We reuse indx and dynstr_index for local symbol
2666 hash since they aren't used by global symbols in this backend. */
2669 elfNN_aarch64_local_htab_hash (const void *ptr)
2671 struct elf_link_hash_entry *h
2672 = (struct elf_link_hash_entry *) ptr;
2673 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
2676 /* Compare local hash entries. */
2679 elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2)
2681 struct elf_link_hash_entry *h1
2682 = (struct elf_link_hash_entry *) ptr1;
2683 struct elf_link_hash_entry *h2
2684 = (struct elf_link_hash_entry *) ptr2;
2686 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
2689 /* Find and/or create a hash entry for local symbol. */
2691 static struct elf_link_hash_entry *
2692 elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab,
2693 bfd *abfd, const Elf_Internal_Rela *rel,
2696 struct elf_aarch64_link_hash_entry e, *ret;
2697 asection *sec = abfd->sections;
2698 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
2699 ELFNN_R_SYM (rel->r_info));
2702 e.root.indx = sec->id;
2703 e.root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2704 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
2705 create ? INSERT : NO_INSERT);
2712 ret = (struct elf_aarch64_link_hash_entry *) *slot;
2716 ret = (struct elf_aarch64_link_hash_entry *)
2717 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
2718 sizeof (struct elf_aarch64_link_hash_entry));
2721 memset (ret, 0, sizeof (*ret));
2722 ret->root.indx = sec->id;
2723 ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2724 ret->root.dynindx = -1;
2730 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2733 elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info,
2734 struct elf_link_hash_entry *dir,
2735 struct elf_link_hash_entry *ind)
2737 struct elf_aarch64_link_hash_entry *edir, *eind;
2739 edir = (struct elf_aarch64_link_hash_entry *) dir;
2740 eind = (struct elf_aarch64_link_hash_entry *) ind;
2742 if (eind->dyn_relocs != NULL)
2744 if (edir->dyn_relocs != NULL)
2746 struct elf_dyn_relocs **pp;
2747 struct elf_dyn_relocs *p;
2749 /* Add reloc counts against the indirect sym to the direct sym
2750 list. Merge any entries against the same section. */
2751 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2753 struct elf_dyn_relocs *q;
2755 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2756 if (q->sec == p->sec)
2758 q->pc_count += p->pc_count;
2759 q->count += p->count;
2766 *pp = edir->dyn_relocs;
2769 edir->dyn_relocs = eind->dyn_relocs;
2770 eind->dyn_relocs = NULL;
2773 if (ind->root.type == bfd_link_hash_indirect)
2775 /* Copy over PLT info. */
2776 if (dir->got.refcount <= 0)
2778 edir->got_type = eind->got_type;
2779 eind->got_type = GOT_UNKNOWN;
2783 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2786 /* Destroy an AArch64 elf linker hash table. */
2789 elfNN_aarch64_link_hash_table_free (bfd *obfd)
2791 struct elf_aarch64_link_hash_table *ret
2792 = (struct elf_aarch64_link_hash_table *) obfd->link.hash;
2794 if (ret->loc_hash_table)
2795 htab_delete (ret->loc_hash_table);
2796 if (ret->loc_hash_memory)
2797 objalloc_free ((struct objalloc *) ret->loc_hash_memory);
2799 bfd_hash_table_free (&ret->stub_hash_table);
2800 _bfd_elf_link_hash_table_free (obfd);
2803 /* Create an AArch64 elf linker hash table. */
2805 static struct bfd_link_hash_table *
2806 elfNN_aarch64_link_hash_table_create (bfd *abfd)
2808 struct elf_aarch64_link_hash_table *ret;
2809 bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table);
2811 ret = bfd_zmalloc (amt);
2815 if (!_bfd_elf_link_hash_table_init
2816 (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc,
2817 sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA))
2823 ret->plt_header_size = PLT_ENTRY_SIZE;
2824 ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE;
2826 ret->dt_tlsdesc_got = (bfd_vma) - 1;
2828 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
2829 sizeof (struct elf_aarch64_stub_hash_entry)))
2831 _bfd_elf_link_hash_table_free (abfd);
2835 ret->loc_hash_table = htab_try_create (1024,
2836 elfNN_aarch64_local_htab_hash,
2837 elfNN_aarch64_local_htab_eq,
2839 ret->loc_hash_memory = objalloc_create ();
2840 if (!ret->loc_hash_table || !ret->loc_hash_memory)
2842 elfNN_aarch64_link_hash_table_free (abfd);
2845 ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free;
2847 return &ret->root.root;
2850 /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */
2853 aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
2854 bfd_vma offset, bfd_vma value)
2856 reloc_howto_type *howto;
2859 howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
2860 place = (input_section->output_section->vma + input_section->output_offset
2863 r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
2864 value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE);
2865 return _bfd_aarch64_elf_put_addend (input_bfd,
2866 input_section->contents + offset, r_type,
2867 howto, value) == bfd_reloc_ok;
2870 static enum elf_aarch64_stub_type
2871 aarch64_select_branch_stub (bfd_vma value, bfd_vma place)
2873 if (aarch64_valid_for_adrp_p (value, place))
2874 return aarch64_stub_adrp_branch;
2875 return aarch64_stub_long_branch;
2878 /* Determine the type of stub needed, if any, for a call. */
2880 static enum elf_aarch64_stub_type
2881 aarch64_type_of_stub (asection *input_sec,
2882 const Elf_Internal_Rela *rel,
2884 unsigned char st_type,
2885 bfd_vma destination)
2888 bfd_signed_vma branch_offset;
2889 unsigned int r_type;
2890 enum elf_aarch64_stub_type stub_type = aarch64_stub_none;
2892 if (st_type != STT_FUNC
2893 && (sym_sec == input_sec))
2896 /* Determine where the call point is. */
2897 location = (input_sec->output_offset
2898 + input_sec->output_section->vma + rel->r_offset);
2900 branch_offset = (bfd_signed_vma) (destination - location);
2902 r_type = ELFNN_R_TYPE (rel->r_info);
2904 /* We don't want to redirect any old unconditional jump in this way,
2905 only one which is being used for a sibcall, where it is
2906 acceptable for the IP0 and IP1 registers to be clobbered. */
2907 if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26))
2908 && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET
2909 || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET))
2911 stub_type = aarch64_stub_long_branch;
2917 /* Build a name for an entry in the stub hash table. */
2920 elfNN_aarch64_stub_name (const asection *input_section,
2921 const asection *sym_sec,
2922 const struct elf_aarch64_link_hash_entry *hash,
2923 const Elf_Internal_Rela *rel)
2930 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1;
2931 stub_name = bfd_malloc (len);
2932 if (stub_name != NULL)
2933 snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x",
2934 (unsigned int) input_section->id,
2935 hash->root.root.root.string,
2940 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2941 stub_name = bfd_malloc (len);
2942 if (stub_name != NULL)
2943 snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x",
2944 (unsigned int) input_section->id,
2945 (unsigned int) sym_sec->id,
2946 (unsigned int) ELFNN_R_SYM (rel->r_info),
2953 /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For
2954 executable PLT slots where the executable never takes the address of those
2955 functions, the function symbols are not added to the hash table. */
2958 elf_aarch64_hash_symbol (struct elf_link_hash_entry *h)
2960 if (h->plt.offset != (bfd_vma) -1
2962 && !h->pointer_equality_needed)
2965 return _bfd_elf_hash_symbol (h);
2969 /* Look up an entry in the stub hash. Stub entries are cached because
2970 creating the stub name takes a bit of time. */
2972 static struct elf_aarch64_stub_hash_entry *
2973 elfNN_aarch64_get_stub_entry (const asection *input_section,
2974 const asection *sym_sec,
2975 struct elf_link_hash_entry *hash,
2976 const Elf_Internal_Rela *rel,
2977 struct elf_aarch64_link_hash_table *htab)
2979 struct elf_aarch64_stub_hash_entry *stub_entry;
2980 struct elf_aarch64_link_hash_entry *h =
2981 (struct elf_aarch64_link_hash_entry *) hash;
2982 const asection *id_sec;
2984 if ((input_section->flags & SEC_CODE) == 0)
2987 /* If this input section is part of a group of sections sharing one
2988 stub section, then use the id of the first section in the group.
2989 Stub names need to include a section id, as there may well be
2990 more than one stub used to reach say, printf, and we need to
2991 distinguish between them. */
2992 id_sec = htab->stub_group[input_section->id].link_sec;
2994 if (h != NULL && h->stub_cache != NULL
2995 && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
2997 stub_entry = h->stub_cache;
3003 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
3004 if (stub_name == NULL)
3007 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
3008 stub_name, FALSE, FALSE);
3010 h->stub_cache = stub_entry;
3019 /* Create a stub section. */
3022 _bfd_aarch64_create_stub_section (asection *section,
3023 struct elf_aarch64_link_hash_table *htab)
3029 namelen = strlen (section->name);
3030 len = namelen + sizeof (STUB_SUFFIX);
3031 s_name = bfd_alloc (htab->stub_bfd, len);
3035 memcpy (s_name, section->name, namelen);
3036 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3037 return (*htab->add_stub_section) (s_name, section);
3041 /* Find or create a stub section for a link section.
3043 Fix or create the stub section used to collect stubs attached to
3044 the specified link section. */
3047 _bfd_aarch64_get_stub_for_link_section (asection *link_section,
3048 struct elf_aarch64_link_hash_table *htab)
3050 if (htab->stub_group[link_section->id].stub_sec == NULL)
3051 htab->stub_group[link_section->id].stub_sec
3052 = _bfd_aarch64_create_stub_section (link_section, htab);
3053 return htab->stub_group[link_section->id].stub_sec;
3057 /* Find or create a stub section in the stub group for an input
3061 _bfd_aarch64_create_or_find_stub_sec (asection *section,
3062 struct elf_aarch64_link_hash_table *htab)
3064 asection *link_sec = htab->stub_group[section->id].link_sec;
3065 return _bfd_aarch64_get_stub_for_link_section (link_sec, htab);
3069 /* Add a new stub entry in the stub group associated with an input
3070 section to the stub hash. Not all fields of the new stub entry are
3073 static struct elf_aarch64_stub_hash_entry *
3074 _bfd_aarch64_add_stub_entry_in_group (const char *stub_name,
3076 struct elf_aarch64_link_hash_table *htab)
3080 struct elf_aarch64_stub_hash_entry *stub_entry;
3082 link_sec = htab->stub_group[section->id].link_sec;
3083 stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab);
3085 /* Enter this entry into the linker stub hash table. */
3086 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3088 if (stub_entry == NULL)
3090 /* xgettext:c-format */
3091 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
3092 section->owner, stub_name);
3096 stub_entry->stub_sec = stub_sec;
3097 stub_entry->stub_offset = 0;
3098 stub_entry->id_sec = link_sec;
3103 /* Add a new stub entry in the final stub section to the stub hash.
3104 Not all fields of the new stub entry are initialised. */
3106 static struct elf_aarch64_stub_hash_entry *
3107 _bfd_aarch64_add_stub_entry_after (const char *stub_name,
3108 asection *link_section,
3109 struct elf_aarch64_link_hash_table *htab)
3112 struct elf_aarch64_stub_hash_entry *stub_entry;
3114 stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab);
3115 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3117 if (stub_entry == NULL)
3119 _bfd_error_handler (_("cannot create stub entry %s"), stub_name);
3123 stub_entry->stub_sec = stub_sec;
3124 stub_entry->stub_offset = 0;
3125 stub_entry->id_sec = link_section;
3132 aarch64_build_one_stub (struct bfd_hash_entry *gen_entry,
3133 void *in_arg ATTRIBUTE_UNUSED)
3135 struct elf_aarch64_stub_hash_entry *stub_entry;
3140 bfd_vma veneered_insn_loc;
3141 bfd_vma veneer_entry_loc;
3142 bfd_signed_vma branch_offset = 0;
3143 unsigned int template_size;
3144 const uint32_t *template;
3147 /* Massage our args to the form they really have. */
3148 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
3150 stub_sec = stub_entry->stub_sec;
3152 /* Make a note of the offset within the stubs for this entry. */
3153 stub_entry->stub_offset = stub_sec->size;
3154 loc = stub_sec->contents + stub_entry->stub_offset;
3156 stub_bfd = stub_sec->owner;
3158 /* This is the address of the stub destination. */
3159 sym_value = (stub_entry->target_value
3160 + stub_entry->target_section->output_offset
3161 + stub_entry->target_section->output_section->vma);
3163 if (stub_entry->stub_type == aarch64_stub_long_branch)
3165 bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma
3166 + stub_sec->output_offset);
3168 /* See if we can relax the stub. */
3169 if (aarch64_valid_for_adrp_p (sym_value, place))
3170 stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place);
3173 switch (stub_entry->stub_type)
3175 case aarch64_stub_adrp_branch:
3176 template = aarch64_adrp_branch_stub;
3177 template_size = sizeof (aarch64_adrp_branch_stub);
3179 case aarch64_stub_long_branch:
3180 template = aarch64_long_branch_stub;
3181 template_size = sizeof (aarch64_long_branch_stub);
3183 case aarch64_stub_erratum_835769_veneer:
3184 template = aarch64_erratum_835769_stub;
3185 template_size = sizeof (aarch64_erratum_835769_stub);
3187 case aarch64_stub_erratum_843419_veneer:
3188 template = aarch64_erratum_843419_stub;
3189 template_size = sizeof (aarch64_erratum_843419_stub);
3195 for (i = 0; i < (template_size / sizeof template[0]); i++)
3197 bfd_putl32 (template[i], loc);
3201 template_size = (template_size + 7) & ~7;
3202 stub_sec->size += template_size;
3204 switch (stub_entry->stub_type)
3206 case aarch64_stub_adrp_branch:
3207 if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec,
3208 stub_entry->stub_offset, sym_value))
3209 /* The stub would not have been relaxed if the offset was out
3213 if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec,
3214 stub_entry->stub_offset + 4, sym_value))
3218 case aarch64_stub_long_branch:
3219 /* We want the value relative to the address 12 bytes back from the
3221 if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec,
3222 stub_entry->stub_offset + 16, sym_value + 12))
3226 case aarch64_stub_erratum_835769_veneer:
3227 veneered_insn_loc = stub_entry->target_section->output_section->vma
3228 + stub_entry->target_section->output_offset
3229 + stub_entry->target_value;
3230 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
3231 + stub_entry->stub_sec->output_offset
3232 + stub_entry->stub_offset;
3233 branch_offset = veneered_insn_loc - veneer_entry_loc;
3234 branch_offset >>= 2;
3235 branch_offset &= 0x3ffffff;
3236 bfd_putl32 (stub_entry->veneered_insn,
3237 stub_sec->contents + stub_entry->stub_offset);
3238 bfd_putl32 (template[1] | branch_offset,
3239 stub_sec->contents + stub_entry->stub_offset + 4);
3242 case aarch64_stub_erratum_843419_veneer:
3243 if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec,
3244 stub_entry->stub_offset + 4, sym_value + 4))
3255 /* As above, but don't actually build the stub. Just bump offset so
3256 we know stub section sizes. */
3259 aarch64_size_one_stub (struct bfd_hash_entry *gen_entry,
3260 void *in_arg ATTRIBUTE_UNUSED)
3262 struct elf_aarch64_stub_hash_entry *stub_entry;
3265 /* Massage our args to the form they really have. */
3266 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
3268 switch (stub_entry->stub_type)
3270 case aarch64_stub_adrp_branch:
3271 size = sizeof (aarch64_adrp_branch_stub);
3273 case aarch64_stub_long_branch:
3274 size = sizeof (aarch64_long_branch_stub);
3276 case aarch64_stub_erratum_835769_veneer:
3277 size = sizeof (aarch64_erratum_835769_stub);
3279 case aarch64_stub_erratum_843419_veneer:
3280 size = sizeof (aarch64_erratum_843419_stub);
3286 size = (size + 7) & ~7;
3287 stub_entry->stub_sec->size += size;
3291 /* External entry points for sizing and building linker stubs. */
3293 /* Set up various things so that we can make a list of input sections
3294 for each output section included in the link. Returns -1 on error,
3295 0 when no stubs will be needed, and 1 on success. */
3298 elfNN_aarch64_setup_section_lists (bfd *output_bfd,
3299 struct bfd_link_info *info)
3302 unsigned int bfd_count;
3303 unsigned int top_id, top_index;
3305 asection **input_list, **list;
3307 struct elf_aarch64_link_hash_table *htab =
3308 elf_aarch64_hash_table (info);
3310 if (!is_elf_hash_table (htab))
3313 /* Count the number of input BFDs and find the top input section id. */
3314 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3315 input_bfd != NULL; input_bfd = input_bfd->link.next)
3318 for (section = input_bfd->sections;
3319 section != NULL; section = section->next)
3321 if (top_id < section->id)
3322 top_id = section->id;
3325 htab->bfd_count = bfd_count;
3327 amt = sizeof (struct map_stub) * (top_id + 1);
3328 htab->stub_group = bfd_zmalloc (amt);
3329 if (htab->stub_group == NULL)
3332 /* We can't use output_bfd->section_count here to find the top output
3333 section index as some sections may have been removed, and
3334 _bfd_strip_section_from_output doesn't renumber the indices. */
3335 for (section = output_bfd->sections, top_index = 0;
3336 section != NULL; section = section->next)
3338 if (top_index < section->index)
3339 top_index = section->index;
3342 htab->top_index = top_index;
3343 amt = sizeof (asection *) * (top_index + 1);
3344 input_list = bfd_malloc (amt);
3345 htab->input_list = input_list;
3346 if (input_list == NULL)
3349 /* For sections we aren't interested in, mark their entries with a
3350 value we can check later. */
3351 list = input_list + top_index;
3353 *list = bfd_abs_section_ptr;
3354 while (list-- != input_list);
3356 for (section = output_bfd->sections;
3357 section != NULL; section = section->next)
3359 if ((section->flags & SEC_CODE) != 0)
3360 input_list[section->index] = NULL;
3366 /* Used by elfNN_aarch64_next_input_section and group_sections. */
3367 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3369 /* The linker repeatedly calls this function for each input section,
3370 in the order that input sections are linked into output sections.
3371 Build lists of input sections to determine groupings between which
3372 we may insert linker stubs. */
3375 elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec)
3377 struct elf_aarch64_link_hash_table *htab =
3378 elf_aarch64_hash_table (info);
3380 if (isec->output_section->index <= htab->top_index)
3382 asection **list = htab->input_list + isec->output_section->index;
3384 if (*list != bfd_abs_section_ptr)
3386 /* Steal the link_sec pointer for our list. */
3387 /* This happens to make the list in reverse order,
3388 which is what we want. */
3389 PREV_SEC (isec) = *list;
3395 /* See whether we can group stub sections together. Grouping stub
3396 sections may result in fewer stubs. More importantly, we need to
3397 put all .init* and .fini* stubs at the beginning of the .init or
3398 .fini output sections respectively, because glibc splits the
3399 _init and _fini functions into multiple parts. Putting a stub in
3400 the middle of a function is not a good idea. */
3403 group_sections (struct elf_aarch64_link_hash_table *htab,
3404 bfd_size_type stub_group_size,
3405 bfd_boolean stubs_always_before_branch)
3407 asection **list = htab->input_list + htab->top_index;
3411 asection *tail = *list;
3413 if (tail == bfd_abs_section_ptr)
3416 while (tail != NULL)
3420 bfd_size_type total;
3424 while ((prev = PREV_SEC (curr)) != NULL
3425 && ((total += curr->output_offset - prev->output_offset)
3429 /* OK, the size from the start of CURR to the end is less
3430 than stub_group_size and thus can be handled by one stub
3431 section. (Or the tail section is itself larger than
3432 stub_group_size, in which case we may be toast.)
3433 We should really be keeping track of the total size of
3434 stubs added here, as stubs contribute to the final output
3438 prev = PREV_SEC (tail);
3439 /* Set up this stub group. */
3440 htab->stub_group[tail->id].link_sec = curr;
3442 while (tail != curr && (tail = prev) != NULL);
3444 /* But wait, there's more! Input sections up to stub_group_size
3445 bytes before the stub section can be handled by it too. */
3446 if (!stubs_always_before_branch)
3450 && ((total += tail->output_offset - prev->output_offset)
3454 prev = PREV_SEC (tail);
3455 htab->stub_group[tail->id].link_sec = curr;
3461 while (list-- != htab->input_list);
3463 free (htab->input_list);
3468 #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3470 #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3471 #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3472 #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3473 #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3474 #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3475 #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3477 #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3478 #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3479 #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3480 #define AARCH64_ZR 0x1f
3482 /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3483 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3485 #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3486 #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3487 #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3488 #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3489 #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3490 #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3491 #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3492 #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3493 #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3494 #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3495 #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3496 #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3497 #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3498 #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3499 #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3500 #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3501 #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3502 #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3504 /* Classify an INSN if it is indeed a load/store.
3506 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3508 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3511 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
3514 aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2,
3515 bfd_boolean *pair, bfd_boolean *load)
3523 /* Bail out quickly if INSN doesn't fall into the load-store
3525 if (!AARCH64_LDST (insn))
3530 if (AARCH64_LDST_EX (insn))
3532 *rt = AARCH64_RT (insn);
3534 if (AARCH64_BIT (insn, 21) == 1)
3537 *rt2 = AARCH64_RT2 (insn);
3539 *load = AARCH64_LD (insn);
3542 else if (AARCH64_LDST_NAP (insn)
3543 || AARCH64_LDSTP_PI (insn)
3544 || AARCH64_LDSTP_O (insn)
3545 || AARCH64_LDSTP_PRE (insn))
3548 *rt = AARCH64_RT (insn);
3549 *rt2 = AARCH64_RT2 (insn);
3550 *load = AARCH64_LD (insn);
3553 else if (AARCH64_LDST_PCREL (insn)
3554 || AARCH64_LDST_UI (insn)
3555 || AARCH64_LDST_PIIMM (insn)
3556 || AARCH64_LDST_U (insn)
3557 || AARCH64_LDST_PREIMM (insn)
3558 || AARCH64_LDST_RO (insn)
3559 || AARCH64_LDST_UIMM (insn))
3561 *rt = AARCH64_RT (insn);
3563 if (AARCH64_LDST_PCREL (insn))
3565 opc = AARCH64_BITS (insn, 22, 2);
3566 v = AARCH64_BIT (insn, 26);
3567 opc_v = opc | (v << 2);
3568 *load = (opc_v == 1 || opc_v == 2 || opc_v == 3
3569 || opc_v == 5 || opc_v == 7);
3572 else if (AARCH64_LDST_SIMD_M (insn)
3573 || AARCH64_LDST_SIMD_M_PI (insn))
3575 *rt = AARCH64_RT (insn);
3576 *load = AARCH64_BIT (insn, 22);
3577 opcode = (insn >> 12) & 0xf;
3604 else if (AARCH64_LDST_SIMD_S (insn)
3605 || AARCH64_LDST_SIMD_S_PI (insn))
3607 *rt = AARCH64_RT (insn);
3608 r = (insn >> 21) & 1;
3609 *load = AARCH64_BIT (insn, 22);
3610 opcode = (insn >> 13) & 0x7;
3622 *rt2 = *rt + (r == 0 ? 2 : 3);
3630 *rt2 = *rt + (r == 0 ? 2 : 3);
3642 /* Return TRUE if INSN is multiply-accumulate. */
3645 aarch64_mlxl_p (uint32_t insn)
3647 uint32_t op31 = AARCH64_OP31 (insn);
3649 if (AARCH64_MAC (insn)
3650 && (op31 == 0 || op31 == 1 || op31 == 5)
3651 /* Exclude MUL instructions which are encoded as a multiple accumulate
3653 && AARCH64_RA (insn) != AARCH64_ZR)
3659 /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3660 it is possible for a 64-bit multiply-accumulate instruction to generate an
3661 incorrect result. The details are quite complex and hard to
3662 determine statically, since branches in the code may exist in some
3663 circumstances, but all cases end with a memory (load, store, or
3664 prefetch) instruction followed immediately by the multiply-accumulate
3665 operation. We employ a linker patching technique, by moving the potentially
3666 affected multiply-accumulate instruction into a patch region and replacing
3667 the original instruction with a branch to the patch. This function checks
3668 if INSN_1 is the memory operation followed by a multiply-accumulate
3669 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3670 if INSN_1 and INSN_2 are safe. */
3673 aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2)
3683 if (aarch64_mlxl_p (insn_2)
3684 && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load))
3686 /* Any SIMD memory op is independent of the subsequent MLA
3687 by definition of the erratum. */
3688 if (AARCH64_BIT (insn_1, 26))
3691 /* If not SIMD, check for integer memory ops and MLA relationship. */
3692 rn = AARCH64_RN (insn_2);
3693 ra = AARCH64_RA (insn_2);
3694 rm = AARCH64_RM (insn_2);
3696 /* If this is a load and there's a true(RAW) dependency, we are safe
3697 and this is not an erratum sequence. */
3699 (rt == rn || rt == rm || rt == ra
3700 || (pair && (rt2 == rn || rt2 == rm || rt2 == ra))))
3703 /* We conservatively put out stubs for all other cases (including
3711 /* Used to order a list of mapping symbols by address. */
3714 elf_aarch64_compare_mapping (const void *a, const void *b)
3716 const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a;
3717 const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b;
3719 if (amap->vma > bmap->vma)
3721 else if (amap->vma < bmap->vma)
3723 else if (amap->type > bmap->type)
3724 /* Ensure results do not depend on the host qsort for objects with
3725 multiple mapping symbols at the same address by sorting on type
3728 else if (amap->type < bmap->type)
3736 _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes)
3738 char *stub_name = (char *) bfd_malloc
3739 (strlen ("__erratum_835769_veneer_") + 16);
3740 sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes);
3744 /* Scan for Cortex-A53 erratum 835769 sequence.
3746 Return TRUE else FALSE on abnormal termination. */
3749 _bfd_aarch64_erratum_835769_scan (bfd *input_bfd,
3750 struct bfd_link_info *info,
3751 unsigned int *num_fixes_p)
3754 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3755 unsigned int num_fixes = *num_fixes_p;
3760 for (section = input_bfd->sections;
3762 section = section->next)
3764 bfd_byte *contents = NULL;
3765 struct _aarch64_elf_section_data *sec_data;
3768 if (elf_section_type (section) != SHT_PROGBITS
3769 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
3770 || (section->flags & SEC_EXCLUDE) != 0
3771 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
3772 || (section->output_section == bfd_abs_section_ptr))
3775 if (elf_section_data (section)->this_hdr.contents != NULL)
3776 contents = elf_section_data (section)->this_hdr.contents;
3777 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
3780 sec_data = elf_aarch64_section_data (section);
3782 qsort (sec_data->map, sec_data->mapcount,
3783 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
3785 for (span = 0; span < sec_data->mapcount; span++)
3787 unsigned int span_start = sec_data->map[span].vma;
3788 unsigned int span_end = ((span == sec_data->mapcount - 1)
3789 ? sec_data->map[0].vma + section->size
3790 : sec_data->map[span + 1].vma);
3792 char span_type = sec_data->map[span].type;
3794 if (span_type == 'd')
3797 for (i = span_start; i + 4 < span_end; i += 4)
3799 uint32_t insn_1 = bfd_getl32 (contents + i);
3800 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3802 if (aarch64_erratum_sequence (insn_1, insn_2))
3804 struct elf_aarch64_stub_hash_entry *stub_entry;
3805 char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes);
3809 stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name,
3815 stub_entry->stub_type = aarch64_stub_erratum_835769_veneer;
3816 stub_entry->target_section = section;
3817 stub_entry->target_value = i + 4;
3818 stub_entry->veneered_insn = insn_2;
3819 stub_entry->output_name = stub_name;
3824 if (elf_section_data (section)->this_hdr.contents == NULL)
3828 *num_fixes_p = num_fixes;
3834 /* Test if instruction INSN is ADRP. */
3837 _bfd_aarch64_adrp_p (uint32_t insn)
3839 return ((insn & 0x9f000000) == 0x90000000);
3843 /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
3846 _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2,
3854 return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load)
3857 && AARCH64_LDST_UIMM (insn_3)
3858 && AARCH64_RN (insn_3) == AARCH64_RD (insn_1));
3862 /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
3864 Return TRUE if section CONTENTS at offset I contains one of the
3865 erratum 843419 sequences, otherwise return FALSE. If a sequence is
3866 seen set P_VENEER_I to the offset of the final LOAD/STORE
3867 instruction in the sequence.
3871 _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma,
3872 bfd_vma i, bfd_vma span_end,
3873 bfd_vma *p_veneer_i)
3875 uint32_t insn_1 = bfd_getl32 (contents + i);
3877 if (!_bfd_aarch64_adrp_p (insn_1))
3880 if (span_end < i + 12)
3883 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3884 uint32_t insn_3 = bfd_getl32 (contents + i + 8);
3886 if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc)
3889 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3))
3891 *p_veneer_i = i + 8;
3895 if (span_end < i + 16)
3898 uint32_t insn_4 = bfd_getl32 (contents + i + 12);
3900 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4))
3902 *p_veneer_i = i + 12;
3910 /* Resize all stub sections. */
3913 _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab)
3917 /* OK, we've added some stubs. Find out the new size of the
3919 for (section = htab->stub_bfd->sections;
3920 section != NULL; section = section->next)
3922 /* Ignore non-stub sections. */
3923 if (!strstr (section->name, STUB_SUFFIX))
3928 bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab);
3930 for (section = htab->stub_bfd->sections;
3931 section != NULL; section = section->next)
3933 if (!strstr (section->name, STUB_SUFFIX))
3936 /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
3937 as long branch stubs contain a 64-bit address. */
3941 /* Ensure all stub sections have a size which is a multiple of
3942 4096. This is important in order to ensure that the insertion
3943 of stub sections does not in itself move existing code around
3944 in such a way that new errata sequences are created. */
3945 if (htab->fix_erratum_843419)
3947 section->size = BFD_ALIGN (section->size, 0x1000);
3951 /* Construct an erratum 843419 workaround stub name. */
3954 _bfd_aarch64_erratum_843419_stub_name (asection *input_section,
3957 const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1;
3958 char *stub_name = bfd_malloc (len);
3960 if (stub_name != NULL)
3961 snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x",
3962 input_section->owner->id,
3968 /* Build a stub_entry structure describing an 843419 fixup.
3970 The stub_entry constructed is populated with the bit pattern INSN
3971 of the instruction located at OFFSET within input SECTION.
3973 Returns TRUE on success. */
3976 _bfd_aarch64_erratum_843419_fixup (uint32_t insn,
3977 bfd_vma adrp_offset,
3978 bfd_vma ldst_offset,
3980 struct bfd_link_info *info)
3982 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3984 struct elf_aarch64_stub_hash_entry *stub_entry;
3986 stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset);
3987 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3995 /* We always place an 843419 workaround veneer in the stub section
3996 attached to the input section in which an erratum sequence has
3997 been found. This ensures that later in the link process (in
3998 elfNN_aarch64_write_section) when we copy the veneered
3999 instruction from the input section into the stub section the
4000 copied instruction will have had any relocations applied to it.
4001 If we placed workaround veneers in any other stub section then we
4002 could not assume that all relocations have been processed on the
4003 corresponding input section at the point we output the stub
4007 stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab);
4008 if (stub_entry == NULL)
4014 stub_entry->adrp_offset = adrp_offset;
4015 stub_entry->target_value = ldst_offset;
4016 stub_entry->target_section = section;
4017 stub_entry->stub_type = aarch64_stub_erratum_843419_veneer;
4018 stub_entry->veneered_insn = insn;
4019 stub_entry->output_name = stub_name;
4025 /* Scan an input section looking for the signature of erratum 843419.
4027 Scans input SECTION in INPUT_BFD looking for erratum 843419
4028 signatures, for each signature found a stub_entry is created
4029 describing the location of the erratum for subsequent fixup.
4031 Return TRUE on successful scan, FALSE on failure to scan.
4035 _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section,
4036 struct bfd_link_info *info)
4038 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
4043 if (elf_section_type (section) != SHT_PROGBITS
4044 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
4045 || (section->flags & SEC_EXCLUDE) != 0
4046 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4047 || (section->output_section == bfd_abs_section_ptr))
4052 bfd_byte *contents = NULL;
4053 struct _aarch64_elf_section_data *sec_data;
4056 if (elf_section_data (section)->this_hdr.contents != NULL)
4057 contents = elf_section_data (section)->this_hdr.contents;
4058 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
4061 sec_data = elf_aarch64_section_data (section);
4063 qsort (sec_data->map, sec_data->mapcount,
4064 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
4066 for (span = 0; span < sec_data->mapcount; span++)
4068 unsigned int span_start = sec_data->map[span].vma;
4069 unsigned int span_end = ((span == sec_data->mapcount - 1)
4070 ? sec_data->map[0].vma + section->size
4071 : sec_data->map[span + 1].vma);
4073 char span_type = sec_data->map[span].type;
4075 if (span_type == 'd')
4078 for (i = span_start; i + 8 < span_end; i += 4)
4080 bfd_vma vma = (section->output_section->vma
4081 + section->output_offset
4085 if (_bfd_aarch64_erratum_843419_p
4086 (contents, vma, i, span_end, &veneer_i))
4088 uint32_t insn = bfd_getl32 (contents + veneer_i);
4090 if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i,
4097 if (elf_section_data (section)->this_hdr.contents == NULL)
4106 /* Determine and set the size of the stub section for a final link.
4108 The basic idea here is to examine all the relocations looking for
4109 PC-relative calls to a target that is unreachable with a "bl"
4113 elfNN_aarch64_size_stubs (bfd *output_bfd,
4115 struct bfd_link_info *info,
4116 bfd_signed_vma group_size,
4117 asection * (*add_stub_section) (const char *,
4119 void (*layout_sections_again) (void))
4121 bfd_size_type stub_group_size;
4122 bfd_boolean stubs_always_before_branch;
4123 bfd_boolean stub_changed = FALSE;
4124 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
4125 unsigned int num_erratum_835769_fixes = 0;
4127 /* Propagate mach to stub bfd, because it may not have been
4128 finalized when we created stub_bfd. */
4129 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
4130 bfd_get_mach (output_bfd));
4132 /* Stash our params away. */
4133 htab->stub_bfd = stub_bfd;
4134 htab->add_stub_section = add_stub_section;
4135 htab->layout_sections_again = layout_sections_again;
4136 stubs_always_before_branch = group_size < 0;
4138 stub_group_size = -group_size;
4140 stub_group_size = group_size;
4142 if (stub_group_size == 1)
4144 /* Default values. */
4145 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
4146 stub_group_size = 127 * 1024 * 1024;
4149 group_sections (htab, stub_group_size, stubs_always_before_branch);
4151 (*htab->layout_sections_again) ();
4153 if (htab->fix_erratum_835769)
4157 for (input_bfd = info->input_bfds;
4158 input_bfd != NULL; input_bfd = input_bfd->link.next)
4159 if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info,
4160 &num_erratum_835769_fixes))
4163 _bfd_aarch64_resize_stubs (htab);
4164 (*htab->layout_sections_again) ();
4167 if (htab->fix_erratum_843419)
4171 for (input_bfd = info->input_bfds;
4173 input_bfd = input_bfd->link.next)
4177 for (section = input_bfd->sections;
4179 section = section->next)
4180 if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info))
4184 _bfd_aarch64_resize_stubs (htab);
4185 (*htab->layout_sections_again) ();
4192 for (input_bfd = info->input_bfds;
4193 input_bfd != NULL; input_bfd = input_bfd->link.next)
4195 Elf_Internal_Shdr *symtab_hdr;
4197 Elf_Internal_Sym *local_syms = NULL;
4199 /* We'll need the symbol table in a second. */
4200 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4201 if (symtab_hdr->sh_info == 0)
4204 /* Walk over each section attached to the input bfd. */
4205 for (section = input_bfd->sections;
4206 section != NULL; section = section->next)
4208 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4210 /* If there aren't any relocs, then there's nothing more
4212 if ((section->flags & SEC_RELOC) == 0
4213 || section->reloc_count == 0
4214 || (section->flags & SEC_CODE) == 0)
4217 /* If this section is a link-once section that will be
4218 discarded, then don't create any stubs. */
4219 if (section->output_section == NULL
4220 || section->output_section->owner != output_bfd)
4223 /* Get the relocs. */
4225 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
4226 NULL, info->keep_memory);
4227 if (internal_relocs == NULL)
4228 goto error_ret_free_local;
4230 /* Now examine each relocation. */
4231 irela = internal_relocs;
4232 irelaend = irela + section->reloc_count;
4233 for (; irela < irelaend; irela++)
4235 unsigned int r_type, r_indx;
4236 enum elf_aarch64_stub_type stub_type;
4237 struct elf_aarch64_stub_hash_entry *stub_entry;
4240 bfd_vma destination;
4241 struct elf_aarch64_link_hash_entry *hash;
4242 const char *sym_name;
4244 const asection *id_sec;
4245 unsigned char st_type;
4248 r_type = ELFNN_R_TYPE (irela->r_info);
4249 r_indx = ELFNN_R_SYM (irela->r_info);
4251 if (r_type >= (unsigned int) R_AARCH64_end)
4253 bfd_set_error (bfd_error_bad_value);
4254 error_ret_free_internal:
4255 if (elf_section_data (section)->relocs == NULL)
4256 free (internal_relocs);
4257 goto error_ret_free_local;
4260 /* Only look for stubs on unconditional branch and
4261 branch and link instructions. */
4262 if (r_type != (unsigned int) AARCH64_R (CALL26)
4263 && r_type != (unsigned int) AARCH64_R (JUMP26))
4266 /* Now determine the call target, its name, value,
4273 if (r_indx < symtab_hdr->sh_info)
4275 /* It's a local symbol. */
4276 Elf_Internal_Sym *sym;
4277 Elf_Internal_Shdr *hdr;
4279 if (local_syms == NULL)
4282 = (Elf_Internal_Sym *) symtab_hdr->contents;
4283 if (local_syms == NULL)
4285 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4286 symtab_hdr->sh_info, 0,
4288 if (local_syms == NULL)
4289 goto error_ret_free_internal;
4292 sym = local_syms + r_indx;
4293 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4294 sym_sec = hdr->bfd_section;
4296 /* This is an undefined symbol. It can never
4300 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4301 sym_value = sym->st_value;
4302 destination = (sym_value + irela->r_addend
4303 + sym_sec->output_offset
4304 + sym_sec->output_section->vma);
4305 st_type = ELF_ST_TYPE (sym->st_info);
4307 = bfd_elf_string_from_elf_section (input_bfd,
4308 symtab_hdr->sh_link,
4315 e_indx = r_indx - symtab_hdr->sh_info;
4316 hash = ((struct elf_aarch64_link_hash_entry *)
4317 elf_sym_hashes (input_bfd)[e_indx]);
4319 while (hash->root.root.type == bfd_link_hash_indirect
4320 || hash->root.root.type == bfd_link_hash_warning)
4321 hash = ((struct elf_aarch64_link_hash_entry *)
4322 hash->root.root.u.i.link);
4324 if (hash->root.root.type == bfd_link_hash_defined
4325 || hash->root.root.type == bfd_link_hash_defweak)
4327 struct elf_aarch64_link_hash_table *globals =
4328 elf_aarch64_hash_table (info);
4329 sym_sec = hash->root.root.u.def.section;
4330 sym_value = hash->root.root.u.def.value;
4331 /* For a destination in a shared library,
4332 use the PLT stub as target address to
4333 decide whether a branch stub is
4335 if (globals->root.splt != NULL && hash != NULL
4336 && hash->root.plt.offset != (bfd_vma) - 1)
4338 sym_sec = globals->root.splt;
4339 sym_value = hash->root.plt.offset;
4340 if (sym_sec->output_section != NULL)
4341 destination = (sym_value
4342 + sym_sec->output_offset
4344 sym_sec->output_section->vma);
4346 else if (sym_sec->output_section != NULL)
4347 destination = (sym_value + irela->r_addend
4348 + sym_sec->output_offset
4349 + sym_sec->output_section->vma);
4351 else if (hash->root.root.type == bfd_link_hash_undefined
4352 || (hash->root.root.type
4353 == bfd_link_hash_undefweak))
4355 /* For a shared library, use the PLT stub as
4356 target address to decide whether a long
4357 branch stub is needed.
4358 For absolute code, they cannot be handled. */
4359 struct elf_aarch64_link_hash_table *globals =
4360 elf_aarch64_hash_table (info);
4362 if (globals->root.splt != NULL && hash != NULL
4363 && hash->root.plt.offset != (bfd_vma) - 1)
4365 sym_sec = globals->root.splt;
4366 sym_value = hash->root.plt.offset;
4367 if (sym_sec->output_section != NULL)
4368 destination = (sym_value
4369 + sym_sec->output_offset
4371 sym_sec->output_section->vma);
4378 bfd_set_error (bfd_error_bad_value);
4379 goto error_ret_free_internal;
4381 st_type = ELF_ST_TYPE (hash->root.type);
4382 sym_name = hash->root.root.root.string;
4385 /* Determine what (if any) linker stub is needed. */
4386 stub_type = aarch64_type_of_stub (section, irela, sym_sec,
4387 st_type, destination);
4388 if (stub_type == aarch64_stub_none)
4391 /* Support for grouping stub sections. */
4392 id_sec = htab->stub_group[section->id].link_sec;
4394 /* Get the name of this stub. */
4395 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash,
4398 goto error_ret_free_internal;
4401 aarch64_stub_hash_lookup (&htab->stub_hash_table,
4402 stub_name, FALSE, FALSE);
4403 if (stub_entry != NULL)
4405 /* The proper stub has already been created. */
4410 stub_entry = _bfd_aarch64_add_stub_entry_in_group
4411 (stub_name, section, htab);
4412 if (stub_entry == NULL)
4415 goto error_ret_free_internal;
4418 stub_entry->target_value = sym_value + irela->r_addend;
4419 stub_entry->target_section = sym_sec;
4420 stub_entry->stub_type = stub_type;
4421 stub_entry->h = hash;
4422 stub_entry->st_type = st_type;
4424 if (sym_name == NULL)
4425 sym_name = "unnamed";
4426 len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name);
4427 stub_entry->output_name = bfd_alloc (htab->stub_bfd, len);
4428 if (stub_entry->output_name == NULL)
4431 goto error_ret_free_internal;
4434 snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME,
4437 stub_changed = TRUE;
4440 /* We're done with the internal relocs, free them. */
4441 if (elf_section_data (section)->relocs == NULL)
4442 free (internal_relocs);
4449 _bfd_aarch64_resize_stubs (htab);
4451 /* Ask the linker to do its stuff. */
4452 (*htab->layout_sections_again) ();
4453 stub_changed = FALSE;
4458 error_ret_free_local:
4462 /* Build all the stubs associated with the current output file. The
4463 stubs are kept in a hash table attached to the main linker hash
4464 table. We also set up the .plt entries for statically linked PIC
4465 functions here. This function is called via aarch64_elf_finish in the
4469 elfNN_aarch64_build_stubs (struct bfd_link_info *info)
4472 struct bfd_hash_table *table;
4473 struct elf_aarch64_link_hash_table *htab;
4475 htab = elf_aarch64_hash_table (info);
4477 for (stub_sec = htab->stub_bfd->sections;
4478 stub_sec != NULL; stub_sec = stub_sec->next)
4482 /* Ignore non-stub sections. */
4483 if (!strstr (stub_sec->name, STUB_SUFFIX))
4486 /* Allocate memory to hold the linker stubs. */
4487 size = stub_sec->size;
4488 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4489 if (stub_sec->contents == NULL && size != 0)
4493 /* Add a branch around the stub section, and a nop, to keep it 8 byte
4494 aligned, as long branch stubs contain a 64-bit address. */
4495 bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents);
4496 bfd_putl32 (INSN_NOP, stub_sec->contents + 4);
4497 stub_sec->size += 8;
4500 /* Build the stubs as directed by the stub hash table. */
4501 table = &htab->stub_hash_table;
4502 bfd_hash_traverse (table, aarch64_build_one_stub, info);
4508 /* Add an entry to the code/data map for section SEC. */
4511 elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma)
4513 struct _aarch64_elf_section_data *sec_data =
4514 elf_aarch64_section_data (sec);
4515 unsigned int newidx;
4517 if (sec_data->map == NULL)
4519 sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map));
4520 sec_data->mapcount = 0;
4521 sec_data->mapsize = 1;
4524 newidx = sec_data->mapcount++;
4526 if (sec_data->mapcount > sec_data->mapsize)
4528 sec_data->mapsize *= 2;
4529 sec_data->map = bfd_realloc_or_free
4530 (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map));
4535 sec_data->map[newidx].vma = vma;
4536 sec_data->map[newidx].type = type;
4541 /* Initialise maps of insn/data for input BFDs. */
4543 bfd_elfNN_aarch64_init_maps (bfd *abfd)
4545 Elf_Internal_Sym *isymbuf;
4546 Elf_Internal_Shdr *hdr;
4547 unsigned int i, localsyms;
4549 /* Make sure that we are dealing with an AArch64 elf binary. */
4550 if (!is_aarch64_elf (abfd))
4553 if ((abfd->flags & DYNAMIC) != 0)
4556 hdr = &elf_symtab_hdr (abfd);
4557 localsyms = hdr->sh_info;
4559 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4560 should contain the number of local symbols, which should come before any
4561 global symbols. Mapping symbols are always local. */
4562 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL);
4564 /* No internal symbols read? Skip this BFD. */
4565 if (isymbuf == NULL)
4568 for (i = 0; i < localsyms; i++)
4570 Elf_Internal_Sym *isym = &isymbuf[i];
4571 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4574 if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4576 name = bfd_elf_string_from_elf_section (abfd,
4580 if (bfd_is_aarch64_special_symbol_name
4581 (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP))
4582 elfNN_aarch64_section_map_add (sec, name[1], isym->st_value);
4587 /* Set option values needed during linking. */
4589 bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
4590 struct bfd_link_info *link_info,
4592 int no_wchar_warn, int pic_veneer,
4593 int fix_erratum_835769,
4594 int fix_erratum_843419,
4595 int no_apply_dynamic_relocs)
4597 struct elf_aarch64_link_hash_table *globals;
4599 globals = elf_aarch64_hash_table (link_info);
4600 globals->pic_veneer = pic_veneer;
4601 globals->fix_erratum_835769 = fix_erratum_835769;
4602 globals->fix_erratum_843419 = fix_erratum_843419;
4603 globals->fix_erratum_843419_adr = TRUE;
4604 globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs;
4606 BFD_ASSERT (is_aarch64_elf (output_bfd));
4607 elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
4608 elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
4612 aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h,
4613 struct elf_aarch64_link_hash_table
4614 *globals, struct bfd_link_info *info,
4615 bfd_vma value, bfd *output_bfd,
4616 bfd_boolean *unresolved_reloc_p)
4618 bfd_vma off = (bfd_vma) - 1;
4619 asection *basegot = globals->root.sgot;
4620 bfd_boolean dyn = globals->root.dynamic_sections_created;
4624 BFD_ASSERT (basegot != NULL);
4625 off = h->got.offset;
4626 BFD_ASSERT (off != (bfd_vma) - 1);
4627 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4628 || (bfd_link_pic (info)
4629 && SYMBOL_REFERENCES_LOCAL (info, h))
4630 || (ELF_ST_VISIBILITY (h->other)
4631 && h->root.type == bfd_link_hash_undefweak))
4633 /* This is actually a static link, or it is a -Bsymbolic link
4634 and the symbol is defined locally. We must initialize this
4635 entry in the global offset table. Since the offset must
4636 always be a multiple of 8 (4 in the case of ILP32), we use
4637 the least significant bit to record whether we have
4638 initialized it already.
4639 When doing a dynamic link, we create a .rel(a).got relocation
4640 entry to initialize the value. This is done in the
4641 finish_dynamic_symbol routine. */
4646 bfd_put_NN (output_bfd, value, basegot->contents + off);
4651 *unresolved_reloc_p = FALSE;
4653 off = off + basegot->output_section->vma + basegot->output_offset;
4659 /* Change R_TYPE to a more efficient access model where possible,
4660 return the new reloc type. */
4662 static bfd_reloc_code_real_type
4663 aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type,
4664 struct elf_link_hash_entry *h)
4666 bfd_boolean is_local = h == NULL;
4670 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
4671 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
4673 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4674 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
4676 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
4678 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4681 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
4683 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4684 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4686 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4688 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4689 : BFD_RELOC_AARCH64_NONE);
4691 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4693 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4694 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
4696 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
4698 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4699 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
4701 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
4702 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
4704 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4705 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC);
4707 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
4708 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type;
4710 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
4711 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type;
4713 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
4716 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
4718 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4719 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4721 case BFD_RELOC_AARCH64_TLSDESC_ADD:
4722 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
4723 case BFD_RELOC_AARCH64_TLSDESC_CALL:
4724 /* Instructions with these relocations will become NOPs. */
4725 return BFD_RELOC_AARCH64_NONE;
4727 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
4728 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
4729 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
4730 return is_local ? BFD_RELOC_AARCH64_NONE : r_type;
4733 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
4735 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4736 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
4738 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
4740 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4741 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
4752 aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
4756 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
4757 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
4758 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
4759 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
4760 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
4761 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
4762 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
4763 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
4764 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
4767 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
4768 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
4769 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
4770 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
4771 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
4772 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
4773 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
4774 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
4777 case BFD_RELOC_AARCH64_TLSDESC_ADD:
4778 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
4779 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
4780 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
4781 case BFD_RELOC_AARCH64_TLSDESC_CALL:
4782 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
4783 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
4784 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
4785 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4786 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4787 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
4788 return GOT_TLSDESC_GD;
4790 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
4791 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
4792 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
4793 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
4794 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
4795 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
4805 aarch64_can_relax_tls (bfd *input_bfd,
4806 struct bfd_link_info *info,
4807 bfd_reloc_code_real_type r_type,
4808 struct elf_link_hash_entry *h,
4809 unsigned long r_symndx)
4811 unsigned int symbol_got_type;
4812 unsigned int reloc_got_type;
4814 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type))
4817 symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx);
4818 reloc_got_type = aarch64_reloc_got_type (r_type);
4820 if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type))
4823 if (!bfd_link_executable (info))
4826 if (h && h->root.type == bfd_link_hash_undefweak)
4832 /* Given the relocation code R_TYPE, return the relaxed bfd reloc
4835 static bfd_reloc_code_real_type
4836 aarch64_tls_transition (bfd *input_bfd,
4837 struct bfd_link_info *info,
4838 unsigned int r_type,
4839 struct elf_link_hash_entry *h,
4840 unsigned long r_symndx)
4842 bfd_reloc_code_real_type bfd_r_type
4843 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
4845 if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx))
4848 return aarch64_tls_transition_without_check (bfd_r_type, h);
4851 /* Return the base VMA address which should be subtracted from real addresses
4852 when resolving R_AARCH64_TLS_DTPREL relocation. */
4855 dtpoff_base (struct bfd_link_info *info)
4857 /* If tls_sec is NULL, we should have signalled an error already. */
4858 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
4859 return elf_hash_table (info)->tls_sec->vma;
4862 /* Return the base VMA address which should be subtracted from real addresses
4863 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
4866 tpoff_base (struct bfd_link_info *info)
4868 struct elf_link_hash_table *htab = elf_hash_table (info);
4870 /* If tls_sec is NULL, we should have signalled an error already. */
4871 BFD_ASSERT (htab->tls_sec != NULL);
4873 bfd_vma base = align_power ((bfd_vma) TCB_SIZE,
4874 htab->tls_sec->alignment_power);
4875 return htab->tls_sec->vma - base;
4879 symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4880 unsigned long r_symndx)
4882 /* Calculate the address of the GOT entry for symbol
4883 referred to in h. */
4885 return &h->got.offset;
4889 struct elf_aarch64_local_symbol *l;
4891 l = elf_aarch64_locals (input_bfd);
4892 return &l[r_symndx].got_offset;
4897 symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4898 unsigned long r_symndx)
4901 p = symbol_got_offset_ref (input_bfd, h, r_symndx);
4906 symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h,
4907 unsigned long r_symndx)
4910 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4915 symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4916 unsigned long r_symndx)
4919 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4925 symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4926 unsigned long r_symndx)
4928 /* Calculate the address of the GOT entry for symbol
4929 referred to in h. */
4932 struct elf_aarch64_link_hash_entry *eh;
4933 eh = (struct elf_aarch64_link_hash_entry *) h;
4934 return &eh->tlsdesc_got_jump_table_offset;
4939 struct elf_aarch64_local_symbol *l;
4941 l = elf_aarch64_locals (input_bfd);
4942 return &l[r_symndx].tlsdesc_got_jump_table_offset;
4947 symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4948 unsigned long r_symndx)
4951 p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4956 symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd,
4957 struct elf_link_hash_entry *h,
4958 unsigned long r_symndx)
4961 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4966 symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4967 unsigned long r_symndx)
4970 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4975 /* Data for make_branch_to_erratum_835769_stub(). */
4977 struct erratum_835769_branch_to_stub_data
4979 struct bfd_link_info *info;
4980 asection *output_section;
4984 /* Helper to insert branches to erratum 835769 stubs in the right
4985 places for a particular section. */
4988 make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry,
4991 struct elf_aarch64_stub_hash_entry *stub_entry;
4992 struct erratum_835769_branch_to_stub_data *data;
4994 unsigned long branch_insn = 0;
4995 bfd_vma veneered_insn_loc, veneer_entry_loc;
4996 bfd_signed_vma branch_offset;
4997 unsigned int target;
5000 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
5001 data = (struct erratum_835769_branch_to_stub_data *) in_arg;
5003 if (stub_entry->target_section != data->output_section
5004 || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer)
5007 contents = data->contents;
5008 veneered_insn_loc = stub_entry->target_section->output_section->vma
5009 + stub_entry->target_section->output_offset
5010 + stub_entry->target_value;
5011 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
5012 + stub_entry->stub_sec->output_offset
5013 + stub_entry->stub_offset;
5014 branch_offset = veneer_entry_loc - veneered_insn_loc;
5016 abfd = stub_entry->target_section->owner;
5017 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
5019 (_("%pB: error: erratum 835769 stub out "
5020 "of range (input file too large)"), abfd);
5022 target = stub_entry->target_value;
5023 branch_insn = 0x14000000;
5024 branch_offset >>= 2;
5025 branch_offset &= 0x3ffffff;
5026 branch_insn |= branch_offset;
5027 bfd_putl32 (branch_insn, &contents[target]);
5034 _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry,
5037 struct elf_aarch64_stub_hash_entry *stub_entry
5038 = (struct elf_aarch64_stub_hash_entry *) gen_entry;
5039 struct erratum_835769_branch_to_stub_data *data
5040 = (struct erratum_835769_branch_to_stub_data *) in_arg;
5041 struct bfd_link_info *info;
5042 struct elf_aarch64_link_hash_table *htab;
5050 contents = data->contents;
5051 section = data->output_section;
5053 htab = elf_aarch64_hash_table (info);
5055 if (stub_entry->target_section != section
5056 || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer)
5059 insn = bfd_getl32 (contents + stub_entry->target_value);
5061 stub_entry->stub_sec->contents + stub_entry->stub_offset);
5063 place = (section->output_section->vma + section->output_offset
5064 + stub_entry->adrp_offset);
5065 insn = bfd_getl32 (contents + stub_entry->adrp_offset);
5067 if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP)
5070 bfd_signed_vma imm =
5071 (_bfd_aarch64_sign_extend
5072 ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33)
5075 if (htab->fix_erratum_843419_adr
5076 && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM))
5078 insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm)
5079 | AARCH64_RT (insn));
5080 bfd_putl32 (insn, contents + stub_entry->adrp_offset);
5084 bfd_vma veneered_insn_loc;
5085 bfd_vma veneer_entry_loc;
5086 bfd_signed_vma branch_offset;
5087 uint32_t branch_insn;
5089 veneered_insn_loc = stub_entry->target_section->output_section->vma
5090 + stub_entry->target_section->output_offset
5091 + stub_entry->target_value;
5092 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
5093 + stub_entry->stub_sec->output_offset
5094 + stub_entry->stub_offset;
5095 branch_offset = veneer_entry_loc - veneered_insn_loc;
5097 abfd = stub_entry->target_section->owner;
5098 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
5100 (_("%pB: error: erratum 843419 stub out "
5101 "of range (input file too large)"), abfd);
5103 branch_insn = 0x14000000;
5104 branch_offset >>= 2;
5105 branch_offset &= 0x3ffffff;
5106 branch_insn |= branch_offset;
5107 bfd_putl32 (branch_insn, contents + stub_entry->target_value);
5114 elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED,
5115 struct bfd_link_info *link_info,
5120 struct elf_aarch64_link_hash_table *globals =
5121 elf_aarch64_hash_table (link_info);
5123 if (globals == NULL)
5126 /* Fix code to point to erratum 835769 stubs. */
5127 if (globals->fix_erratum_835769)
5129 struct erratum_835769_branch_to_stub_data data;
5131 data.info = link_info;
5132 data.output_section = sec;
5133 data.contents = contents;
5134 bfd_hash_traverse (&globals->stub_hash_table,
5135 make_branch_to_erratum_835769_stub, &data);
5138 if (globals->fix_erratum_843419)
5140 struct erratum_835769_branch_to_stub_data data;
5142 data.info = link_info;
5143 data.output_section = sec;
5144 data.contents = contents;
5145 bfd_hash_traverse (&globals->stub_hash_table,
5146 _bfd_aarch64_erratum_843419_branch_to_stub, &data);
5152 /* Return TRUE if RELOC is a relocation against the base of GOT table. */
5155 aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc)
5157 return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
5158 || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5159 || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
5160 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
5161 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1);
5164 /* Perform a relocation as part of a final link. The input relocation type
5165 should be TLS relaxed. */
5167 static bfd_reloc_status_type
5168 elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
5171 asection *input_section,
5173 Elf_Internal_Rela *rel,
5175 struct bfd_link_info *info,
5177 struct elf_link_hash_entry *h,
5178 bfd_boolean *unresolved_reloc_p,
5179 bfd_boolean save_addend,
5180 bfd_vma *saved_addend,
5181 Elf_Internal_Sym *sym)
5183 Elf_Internal_Shdr *symtab_hdr;
5184 unsigned int r_type = howto->type;
5185 bfd_reloc_code_real_type bfd_r_type
5186 = elfNN_aarch64_bfd_reloc_from_howto (howto);
5187 unsigned long r_symndx;
5188 bfd_byte *hit_data = contents + rel->r_offset;
5189 bfd_vma place, off, got_entry_addr = 0;
5190 bfd_signed_vma signed_addend;
5191 struct elf_aarch64_link_hash_table *globals;
5192 bfd_boolean weak_undef_p;
5193 bfd_boolean relative_reloc;
5195 bfd_vma orig_value = value;
5196 bfd_boolean resolved_to_zero;
5197 bfd_boolean abs_symbol_p;
5199 globals = elf_aarch64_hash_table (info);
5201 symtab_hdr = &elf_symtab_hdr (input_bfd);
5203 BFD_ASSERT (is_aarch64_elf (input_bfd));
5205 r_symndx = ELFNN_R_SYM (rel->r_info);
5207 place = input_section->output_section->vma
5208 + input_section->output_offset + rel->r_offset;
5210 /* Get addend, accumulating the addend for consecutive relocs
5211 which refer to the same offset. */
5212 signed_addend = saved_addend ? *saved_addend : 0;
5213 signed_addend += rel->r_addend;
5215 weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
5216 : bfd_is_und_section (sym_sec));
5217 abs_symbol_p = (h !=NULL && h->root.type == bfd_link_hash_defined
5218 && bfd_is_abs_section (h->root.u.def.section));
5221 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
5222 it here if it is defined in a non-shared object. */
5224 && h->type == STT_GNU_IFUNC
5231 if ((input_section->flags & SEC_ALLOC) == 0)
5233 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
5234 STT_GNU_IFUNC symbol as STT_FUNC. */
5235 if (elf_section_type (input_section) == SHT_NOTE)
5238 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5239 sections because such sections are not SEC_ALLOC and
5240 thus ld.so will not process them. */
5241 if ((input_section->flags & SEC_DEBUGGING) != 0)
5242 return bfd_reloc_ok;
5244 if (h->root.root.string)
5245 name = h->root.root.string;
5247 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL);
5249 /* xgettext:c-format */
5250 (_("%pB(%pA+%#" PRIx64 "): "
5251 "unresolvable %s relocation against symbol `%s'"),
5252 input_bfd, input_section, (uint64_t) rel->r_offset,
5254 bfd_set_error (bfd_error_bad_value);
5255 return bfd_reloc_notsupported;
5257 else if (h->plt.offset == (bfd_vma) -1)
5258 goto bad_ifunc_reloc;
5260 /* STT_GNU_IFUNC symbol must go through PLT. */
5261 plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
5262 value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
5268 if (h->root.root.string)
5269 name = h->root.root.string;
5271 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
5274 /* xgettext:c-format */
5275 (_("%pB: relocation %s against STT_GNU_IFUNC "
5276 "symbol `%s' isn't handled by %s"), input_bfd,
5277 howto->name, name, __FUNCTION__);
5278 bfd_set_error (bfd_error_bad_value);
5279 return bfd_reloc_notsupported;
5281 case BFD_RELOC_AARCH64_NN:
5282 if (rel->r_addend != 0)
5284 if (h->root.root.string)
5285 name = h->root.root.string;
5287 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
5290 /* xgettext:c-format */
5291 (_("%pB: relocation %s against STT_GNU_IFUNC "
5292 "symbol `%s' has non-zero addend: %" PRId64),
5293 input_bfd, howto->name, name, (int64_t) rel->r_addend);
5294 bfd_set_error (bfd_error_bad_value);
5295 return bfd_reloc_notsupported;
5298 /* Generate dynamic relocation only when there is a
5299 non-GOT reference in a shared object. */
5300 if (bfd_link_pic (info) && h->non_got_ref)
5302 Elf_Internal_Rela outrel;
5305 /* Need a dynamic relocation to get the real function
5307 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
5311 if (outrel.r_offset == (bfd_vma) -1
5312 || outrel.r_offset == (bfd_vma) -2)
5315 outrel.r_offset += (input_section->output_section->vma
5316 + input_section->output_offset);
5318 if (h->dynindx == -1
5320 || bfd_link_executable (info))
5322 /* This symbol is resolved locally. */
5323 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
5324 outrel.r_addend = (h->root.u.def.value
5325 + h->root.u.def.section->output_section->vma
5326 + h->root.u.def.section->output_offset);
5330 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5331 outrel.r_addend = 0;
5334 sreloc = globals->root.irelifunc;
5335 elf_append_rela (output_bfd, sreloc, &outrel);
5337 /* If this reloc is against an external symbol, we
5338 do not want to fiddle with the addend. Otherwise,
5339 we need to include the symbol value so that it
5340 becomes an addend for the dynamic reloc. For an
5341 internal symbol, we have updated addend. */
5342 return bfd_reloc_ok;
5345 case BFD_RELOC_AARCH64_CALL26:
5346 case BFD_RELOC_AARCH64_JUMP26:
5347 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5350 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5352 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5353 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
5354 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
5355 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
5356 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
5357 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5358 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
5359 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5360 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
5361 base_got = globals->root.sgot;
5362 off = h->got.offset;
5364 if (base_got == NULL)
5367 if (off == (bfd_vma) -1)
5371 /* We can't use h->got.offset here to save state, or
5372 even just remember the offset, as finish_dynamic_symbol
5373 would use that as offset into .got. */
5375 if (globals->root.splt != NULL)
5377 plt_index = ((h->plt.offset - globals->plt_header_size) /
5378 globals->plt_entry_size);
5379 off = (plt_index + 3) * GOT_ENTRY_SIZE;
5380 base_got = globals->root.sgotplt;
5384 plt_index = h->plt.offset / globals->plt_entry_size;
5385 off = plt_index * GOT_ENTRY_SIZE;
5386 base_got = globals->root.igotplt;
5389 if (h->dynindx == -1
5393 /* This references the local definition. We must
5394 initialize this entry in the global offset table.
5395 Since the offset must always be a multiple of 8,
5396 we use the least significant bit to record
5397 whether we have initialized it already.
5399 When doing a dynamic link, we create a .rela.got
5400 relocation entry to initialize the value. This
5401 is done in the finish_dynamic_symbol routine. */
5406 bfd_put_NN (output_bfd, value,
5407 base_got->contents + off);
5408 /* Note that this is harmless as -1 | 1 still is -1. */
5412 value = (base_got->output_section->vma
5413 + base_got->output_offset + off);
5416 value = aarch64_calculate_got_entry_vma (h, globals, info,
5418 unresolved_reloc_p);
5420 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
5421 addend = (globals->root.sgot->output_section->vma
5422 + globals->root.sgot->output_offset);
5424 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5425 addend, weak_undef_p);
5426 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
5427 case BFD_RELOC_AARCH64_ADD_LO12:
5428 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5434 resolved_to_zero = (h != NULL
5435 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5439 case BFD_RELOC_AARCH64_NONE:
5440 case BFD_RELOC_AARCH64_TLSDESC_ADD:
5441 case BFD_RELOC_AARCH64_TLSDESC_CALL:
5442 case BFD_RELOC_AARCH64_TLSDESC_LDR:
5443 *unresolved_reloc_p = FALSE;
5444 return bfd_reloc_ok;
5446 case BFD_RELOC_AARCH64_NN:
5448 /* When generating a shared object or relocatable executable, these
5449 relocations are copied into the output file to be resolved at
5451 if (((bfd_link_pic (info)
5452 || globals->root.is_relocatable_executable)
5453 && (input_section->flags & SEC_ALLOC)
5455 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5456 && !resolved_to_zero)
5457 || h->root.type != bfd_link_hash_undefweak))
5458 /* Or we are creating an executable, we may need to keep relocations
5459 for symbols satisfied by a dynamic library if we manage to avoid
5460 copy relocs for the symbol. */
5461 || (ELIMINATE_COPY_RELOCS
5462 && !bfd_link_pic (info)
5464 && (input_section->flags & SEC_ALLOC)
5469 || h->root.type == bfd_link_hash_undefweak
5470 || h->root.type == bfd_link_hash_undefined)))
5472 Elf_Internal_Rela outrel;
5474 bfd_boolean skip, relocate;
5477 *unresolved_reloc_p = FALSE;
5482 outrel.r_addend = signed_addend;
5484 _bfd_elf_section_offset (output_bfd, info, input_section,
5486 if (outrel.r_offset == (bfd_vma) - 1)
5488 else if (outrel.r_offset == (bfd_vma) - 2)
5493 else if (abs_symbol_p)
5495 /* Local absolute symbol. */
5496 skip = (h->forced_local || (h->dynindx == -1));
5500 outrel.r_offset += (input_section->output_section->vma
5501 + input_section->output_offset);
5504 memset (&outrel, 0, sizeof outrel);
5507 && (!bfd_link_pic (info)
5508 || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h))
5509 || !h->def_regular))
5510 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5515 /* On SVR4-ish systems, the dynamic loader cannot
5516 relocate the text and data segments independently,
5517 so the symbol does not matter. */
5519 relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE;
5520 outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE));
5521 outrel.r_addend += value;
5524 sreloc = elf_section_data (input_section)->sreloc;
5525 if (sreloc == NULL || sreloc->contents == NULL)
5526 return bfd_reloc_notsupported;
5528 loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
5529 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
5531 if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
5533 /* Sanity to check that we have previously allocated
5534 sufficient space in the relocation section for the
5535 number of relocations we actually want to emit. */
5539 /* If this reloc is against an external symbol, we do not want to
5540 fiddle with the addend. Otherwise, we need to include the symbol
5541 value so that it becomes an addend for the dynamic reloc. */
5543 return bfd_reloc_ok;
5545 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5546 contents, rel->r_offset, value,
5550 value += signed_addend;
5553 case BFD_RELOC_AARCH64_CALL26:
5554 case BFD_RELOC_AARCH64_JUMP26:
5556 asection *splt = globals->root.splt;
5557 bfd_boolean via_plt_p =
5558 splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
5560 /* A call to an undefined weak symbol is converted to a jump to
5561 the next instruction unless a PLT entry will be created.
5562 The jump to the next instruction is optimized as a NOP.
5563 Do the same for local undefined symbols. */
5564 if (weak_undef_p && ! via_plt_p)
5566 bfd_putl32 (INSN_NOP, hit_data);
5567 return bfd_reloc_ok;
5570 /* If the call goes through a PLT entry, make sure to
5571 check distance to the right destination address. */
5573 value = (splt->output_section->vma
5574 + splt->output_offset + h->plt.offset);
5576 /* Check if a stub has to be inserted because the destination
5578 struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
5580 /* If the branch destination is directed to plt stub, "value" will be
5581 the final destination, otherwise we should plus signed_addend, it may
5582 contain non-zero value, for example call to local function symbol
5583 which are turned into "sec_sym + sec_off", and sec_off is kept in
5585 if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend,
5587 /* The target is out of reach, so redirect the branch to
5588 the local stub for this function. */
5589 stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
5591 if (stub_entry != NULL)
5593 value = (stub_entry->stub_offset
5594 + stub_entry->stub_sec->output_offset
5595 + stub_entry->stub_sec->output_section->vma);
5597 /* We have redirected the destination to stub entry address,
5598 so ignore any addend record in the original rela entry. */
5602 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5603 signed_addend, weak_undef_p);
5604 *unresolved_reloc_p = FALSE;
5607 case BFD_RELOC_AARCH64_16_PCREL:
5608 case BFD_RELOC_AARCH64_32_PCREL:
5609 case BFD_RELOC_AARCH64_64_PCREL:
5610 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
5611 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5612 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
5613 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
5614 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
5615 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
5616 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
5617 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
5618 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
5619 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
5620 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
5621 if (bfd_link_pic (info)
5622 && (input_section->flags & SEC_ALLOC) != 0
5623 && (input_section->flags & SEC_READONLY) != 0
5624 && !SYMBOL_REFERENCES_LOCAL (info, h))
5626 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5629 /* xgettext:c-format */
5630 (_("%pB: relocation %s against symbol `%s' which may bind "
5631 "externally can not be used when making a shared object; "
5632 "recompile with -fPIC"),
5633 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
5634 h->root.root.string);
5635 bfd_set_error (bfd_error_bad_value);
5636 return bfd_reloc_notsupported;
5640 case BFD_RELOC_AARCH64_16:
5642 case BFD_RELOC_AARCH64_32:
5644 case BFD_RELOC_AARCH64_ADD_LO12:
5645 case BFD_RELOC_AARCH64_BRANCH19:
5646 case BFD_RELOC_AARCH64_LDST128_LO12:
5647 case BFD_RELOC_AARCH64_LDST16_LO12:
5648 case BFD_RELOC_AARCH64_LDST32_LO12:
5649 case BFD_RELOC_AARCH64_LDST64_LO12:
5650 case BFD_RELOC_AARCH64_LDST8_LO12:
5651 case BFD_RELOC_AARCH64_MOVW_G0:
5652 case BFD_RELOC_AARCH64_MOVW_G0_NC:
5653 case BFD_RELOC_AARCH64_MOVW_G0_S:
5654 case BFD_RELOC_AARCH64_MOVW_G1:
5655 case BFD_RELOC_AARCH64_MOVW_G1_NC:
5656 case BFD_RELOC_AARCH64_MOVW_G1_S:
5657 case BFD_RELOC_AARCH64_MOVW_G2:
5658 case BFD_RELOC_AARCH64_MOVW_G2_NC:
5659 case BFD_RELOC_AARCH64_MOVW_G2_S:
5660 case BFD_RELOC_AARCH64_MOVW_G3:
5661 case BFD_RELOC_AARCH64_TSTBR14:
5662 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5663 signed_addend, weak_undef_p);
5666 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5667 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
5668 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
5669 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
5670 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
5671 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
5672 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5673 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5674 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
5675 if (globals->root.sgot == NULL)
5676 BFD_ASSERT (h != NULL);
5678 relative_reloc = FALSE;
5683 /* If a symbol is not dynamic and is not undefined weak, bind it
5684 locally and generate a RELATIVE relocation under PIC mode.
5686 NOTE: one symbol may be referenced by several relocations, we
5687 should only generate one RELATIVE relocation for that symbol.
5688 Therefore, check GOT offset mark first. */
5689 if (h->dynindx == -1
5691 && h->root.type != bfd_link_hash_undefweak
5692 && bfd_link_pic (info)
5693 && !symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5694 relative_reloc = TRUE;
5696 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5698 unresolved_reloc_p);
5699 /* Record the GOT entry address which will be used when generating
5700 RELATIVE relocation. */
5702 got_entry_addr = value;
5704 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
5705 addend = (globals->root.sgot->output_section->vma
5706 + globals->root.sgot->output_offset);
5707 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5708 addend, weak_undef_p);
5713 struct elf_aarch64_local_symbol *locals
5714 = elf_aarch64_locals (input_bfd);
5718 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5720 /* xgettext:c-format */
5721 (_("%pB: local symbol descriptor table be NULL when applying "
5722 "relocation %s against local symbol"),
5723 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
5727 off = symbol_got_offset (input_bfd, h, r_symndx);
5728 base_got = globals->root.sgot;
5729 got_entry_addr = (base_got->output_section->vma
5730 + base_got->output_offset + off);
5732 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5734 bfd_put_64 (output_bfd, value, base_got->contents + off);
5736 /* For local symbol, we have done absolute relocation in static
5737 linking stage. While for shared library, we need to update the
5738 content of GOT entry according to the shared object's runtime
5739 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
5740 for dynamic linker. */
5741 if (bfd_link_pic (info))
5742 relative_reloc = TRUE;
5744 symbol_got_offset_mark (input_bfd, h, r_symndx);
5747 /* Update the relocation value to GOT entry addr as we have transformed
5748 the direct data access into indirect data access through GOT. */
5749 value = got_entry_addr;
5751 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
5752 addend = base_got->output_section->vma + base_got->output_offset;
5754 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5755 addend, weak_undef_p);
5761 Elf_Internal_Rela outrel;
5763 s = globals->root.srelgot;
5767 outrel.r_offset = got_entry_addr;
5768 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
5769 outrel.r_addend = orig_value;
5770 elf_append_rela (output_bfd, s, &outrel);
5774 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
5775 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
5776 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
5777 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
5778 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
5779 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
5780 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
5781 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
5782 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
5783 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
5784 if (globals->root.sgot == NULL)
5785 return bfd_reloc_notsupported;
5787 value = (symbol_got_offset (input_bfd, h, r_symndx)
5788 + globals->root.sgot->output_section->vma
5789 + globals->root.sgot->output_offset);
5791 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5793 *unresolved_reloc_p = FALSE;
5796 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
5797 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
5798 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
5799 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
5800 if (globals->root.sgot == NULL)
5801 return bfd_reloc_notsupported;
5803 value = symbol_got_offset (input_bfd, h, r_symndx);
5804 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5806 *unresolved_reloc_p = FALSE;
5809 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
5810 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
5811 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
5812 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
5813 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
5814 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
5815 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
5816 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
5817 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
5818 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
5819 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
5820 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
5821 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
5822 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
5823 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
5824 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
5825 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5826 signed_addend - dtpoff_base (info),
5830 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
5831 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
5832 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
5833 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
5834 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
5835 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
5836 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
5837 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
5838 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5839 signed_addend - tpoff_base (info),
5841 *unresolved_reloc_p = FALSE;
5844 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
5845 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
5846 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
5847 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
5848 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
5849 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
5850 if (globals->root.sgot == NULL)
5851 return bfd_reloc_notsupported;
5852 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5853 + globals->root.sgotplt->output_section->vma
5854 + globals->root.sgotplt->output_offset
5855 + globals->sgotplt_jump_table_size);
5857 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5859 *unresolved_reloc_p = FALSE;
5862 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5863 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
5864 if (globals->root.sgot == NULL)
5865 return bfd_reloc_notsupported;
5867 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5868 + globals->root.sgotplt->output_section->vma
5869 + globals->root.sgotplt->output_offset
5870 + globals->sgotplt_jump_table_size);
5872 value -= (globals->root.sgot->output_section->vma
5873 + globals->root.sgot->output_offset);
5875 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5877 *unresolved_reloc_p = FALSE;
5881 return bfd_reloc_notsupported;
5885 *saved_addend = value;
5887 /* Only apply the final relocation in a sequence. */
5889 return bfd_reloc_continue;
5891 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5895 /* LP64 and ILP32 operates on x- and w-registers respectively.
5896 Next definitions take into account the difference between
5897 corresponding machine codes. R means x-register if the target
5898 arch is LP64, and w-register if the target is ILP32. */
5901 # define add_R0_R0 (0x91000000)
5902 # define add_R0_R0_R1 (0x8b000020)
5903 # define add_R0_R1 (0x91400020)
5904 # define ldr_R0 (0x58000000)
5905 # define ldr_R0_mask(i) (i & 0xffffffe0)
5906 # define ldr_R0_x0 (0xf9400000)
5907 # define ldr_hw_R0 (0xf2a00000)
5908 # define movk_R0 (0xf2800000)
5909 # define movz_R0 (0xd2a00000)
5910 # define movz_hw_R0 (0xd2c00000)
5911 #else /*ARCH_SIZE == 32 */
5912 # define add_R0_R0 (0x11000000)
5913 # define add_R0_R0_R1 (0x0b000020)
5914 # define add_R0_R1 (0x11400020)
5915 # define ldr_R0 (0x18000000)
5916 # define ldr_R0_mask(i) (i & 0xbfffffe0)
5917 # define ldr_R0_x0 (0xb9400000)
5918 # define ldr_hw_R0 (0x72a00000)
5919 # define movk_R0 (0x72800000)
5920 # define movz_R0 (0x52a00000)
5921 # define movz_hw_R0 (0x52c00000)
5924 /* Handle TLS relaxations. Relaxing is possible for symbols that use
5925 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
5928 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
5929 is to then call final_link_relocate. Return other values in the
5932 static bfd_reloc_status_type
5933 elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
5934 bfd *input_bfd, bfd_byte *contents,
5935 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h)
5937 bfd_boolean is_local = h == NULL;
5938 unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
5941 BFD_ASSERT (globals && input_bfd && contents && rel);
5943 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
5945 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
5946 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
5949 /* GD->LE relaxation:
5950 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
5952 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
5954 Where R is x for LP64, and w for ILP32. */
5955 bfd_putl32 (movz_R0, contents + rel->r_offset);
5956 return bfd_reloc_continue;
5960 /* GD->IE relaxation:
5961 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
5963 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
5965 return bfd_reloc_continue;
5968 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
5972 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
5975 /* Tiny TLSDESC->LE relaxation:
5976 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
5977 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
5981 Where R is x for LP64, and w for ILP32. */
5982 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5983 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5985 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5986 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5987 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5989 bfd_putl32 (movz_R0, contents + rel->r_offset);
5990 bfd_putl32 (movk_R0, contents + rel->r_offset + 4);
5991 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5992 return bfd_reloc_continue;
5996 /* Tiny TLSDESC->IE relaxation:
5997 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
5998 adr x0, :tlsdesc:var => nop
6002 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
6003 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
6005 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6006 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6008 bfd_putl32 (ldr_R0, contents + rel->r_offset);
6009 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
6010 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
6011 return bfd_reloc_continue;
6014 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
6017 /* Tiny GD->LE relaxation:
6018 adr x0, :tlsgd:var => mrs x1, tpidr_el0
6019 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
6020 nop => add R0, R0, #:tprel_lo12_nc:x
6022 Where R is x for LP64, and x for Ilp32. */
6024 /* First kill the tls_get_addr reloc on the bl instruction. */
6025 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6027 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
6028 bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4);
6029 bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8);
6031 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6032 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
6033 rel[1].r_offset = rel->r_offset + 8;
6035 /* Move the current relocation to the second instruction in
6038 rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6039 AARCH64_R (TLSLE_ADD_TPREL_HI12));
6040 return bfd_reloc_continue;
6044 /* Tiny GD->IE relaxation:
6045 adr x0, :tlsgd:var => ldr R0, :gottprel:var
6046 bl __tls_get_addr => mrs x1, tpidr_el0
6047 nop => add R0, R0, R1
6049 Where R is x for LP64, and w for Ilp32. */
6051 /* First kill the tls_get_addr reloc on the bl instruction. */
6052 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6053 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6055 bfd_putl32 (ldr_R0, contents + rel->r_offset);
6056 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
6057 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
6058 return bfd_reloc_continue;
6062 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
6063 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
6064 BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
6065 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
6069 /* Large GD->LE relaxation:
6070 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
6071 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
6072 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
6073 bl __tls_get_addr => mrs x1, tpidr_el0
6074 nop => add x0, x0, x1
6076 rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6077 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
6078 rel[2].r_offset = rel->r_offset + 8;
6080 bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0);
6081 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4);
6082 bfd_putl32 (movk_R0, contents + rel->r_offset + 8);
6083 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
6084 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
6088 /* Large GD->IE relaxation:
6089 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
6090 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
6091 add x0, gp, x0 => ldr x0, [gp, x0]
6092 bl __tls_get_addr => mrs x1, tpidr_el0
6093 nop => add x0, x0, x1
6095 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6096 bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
6097 bfd_putl32 (ldr_R0, contents + rel->r_offset + 8);
6098 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
6099 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
6101 return bfd_reloc_continue;
6103 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
6104 return bfd_reloc_continue;
6107 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
6108 return bfd_reloc_continue;
6110 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
6113 /* GD->LE relaxation:
6114 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
6116 Where R is x for lp64 mode, and w for ILP32 mode. */
6117 bfd_putl32 (movk_R0, contents + rel->r_offset);
6118 return bfd_reloc_continue;
6122 /* GD->IE relaxation:
6123 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
6125 Where R is x for lp64 mode, and w for ILP32 mode. */
6126 insn = bfd_getl32 (contents + rel->r_offset);
6127 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
6128 return bfd_reloc_continue;
6131 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
6134 /* GD->LE relaxation
6135 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
6136 bl __tls_get_addr => mrs x1, tpidr_el0
6137 nop => add R0, R1, R0
6139 Where R is x for lp64 mode, and w for ILP32 mode. */
6141 /* First kill the tls_get_addr reloc on the bl instruction. */
6142 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6143 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6145 bfd_putl32 (movk_R0, contents + rel->r_offset);
6146 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
6147 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
6148 return bfd_reloc_continue;
6152 /* GD->IE relaxation
6153 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6154 BL __tls_get_addr => mrs x1, tpidr_el0
6156 NOP => add R0, R1, R0
6158 Where R is x for lp64 mode, and w for ilp32 mode. */
6160 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6162 /* Remove the relocation on the BL instruction. */
6163 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6165 /* We choose to fixup the BL and NOP instructions using the
6166 offset from the second relocation to allow flexibility in
6167 scheduling instructions between the ADD and BL. */
6168 bfd_putl32 (ldr_R0_x0, contents + rel->r_offset);
6169 bfd_putl32 (0xd53bd041, contents + rel[1].r_offset);
6170 bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4);
6171 return bfd_reloc_continue;
6174 case BFD_RELOC_AARCH64_TLSDESC_ADD:
6175 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
6176 case BFD_RELOC_AARCH64_TLSDESC_CALL:
6177 /* GD->IE/LE relaxation:
6178 add x0, x0, #:tlsdesc_lo12:var => nop
6181 bfd_putl32 (INSN_NOP, contents + rel->r_offset);
6182 return bfd_reloc_ok;
6184 case BFD_RELOC_AARCH64_TLSDESC_LDR:
6187 /* GD->LE relaxation:
6188 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6190 Where R is x for lp64 mode, and w for ILP32 mode. */
6191 bfd_putl32 (movk_R0, contents + rel->r_offset);
6192 return bfd_reloc_continue;
6196 /* GD->IE relaxation:
6197 ldr xd, [gp, xn] => ldr R0, [gp, xn]
6199 Where R is x for lp64 mode, and w for ILP32 mode. */
6200 insn = bfd_getl32 (contents + rel->r_offset);
6201 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
6202 return bfd_reloc_ok;
6205 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6206 /* GD->LE relaxation:
6207 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
6209 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6211 Where R is x for lp64 mode, and w for ILP32 mode. */
6213 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset);
6214 return bfd_reloc_continue;
6216 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6219 /* GD->LE relaxation:
6220 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6222 Where R is x for lp64 mode, and w for ILP32 mode. */
6223 bfd_putl32 (movz_hw_R0, contents + rel->r_offset);
6224 return bfd_reloc_continue;
6228 /* GD->IE relaxation:
6229 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6231 Where R is x for lp64 mode, and w for ILP32 mode. */
6232 insn = bfd_getl32 (contents + rel->r_offset);
6233 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
6234 return bfd_reloc_continue;
6237 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
6238 /* IE->LE relaxation:
6239 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
6241 Where R is x for lp64 mode, and w for ILP32 mode. */
6244 insn = bfd_getl32 (contents + rel->r_offset);
6245 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
6247 return bfd_reloc_continue;
6249 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
6250 /* IE->LE relaxation:
6251 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
6253 Where R is x for lp64 mode, and w for ILP32 mode. */
6256 insn = bfd_getl32 (contents + rel->r_offset);
6257 bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset);
6259 return bfd_reloc_continue;
6261 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
6262 /* LD->LE relaxation (tiny):
6263 adr x0, :tlsldm:x => mrs x0, tpidr_el0
6264 bl __tls_get_addr => add R0, R0, TCB_SIZE
6266 Where R is x for lp64 mode, and w for ilp32 mode. */
6269 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6270 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6271 /* No need of CALL26 relocation for tls_get_addr. */
6272 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6273 bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
6274 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6275 contents + rel->r_offset + 4);
6276 return bfd_reloc_ok;
6278 return bfd_reloc_continue;
6280 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
6281 /* LD->LE relaxation (small):
6282 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6286 bfd_putl32 (0xd53bd040, contents + rel->r_offset);
6287 return bfd_reloc_ok;
6289 return bfd_reloc_continue;
6291 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
6292 /* LD->LE relaxation (small):
6293 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
6294 bl __tls_get_addr => nop
6296 Where R is x for lp64 mode, and w for ilp32 mode. */
6299 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6300 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6301 /* No need of CALL26 relocation for tls_get_addr. */
6302 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6303 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6304 contents + rel->r_offset + 0);
6305 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
6306 return bfd_reloc_ok;
6308 return bfd_reloc_continue;
6311 return bfd_reloc_continue;
6314 return bfd_reloc_ok;
6317 /* Relocate an AArch64 ELF section. */
6320 elfNN_aarch64_relocate_section (bfd *output_bfd,
6321 struct bfd_link_info *info,
6323 asection *input_section,
6325 Elf_Internal_Rela *relocs,
6326 Elf_Internal_Sym *local_syms,
6327 asection **local_sections)
6329 Elf_Internal_Shdr *symtab_hdr;
6330 struct elf_link_hash_entry **sym_hashes;
6331 Elf_Internal_Rela *rel;
6332 Elf_Internal_Rela *relend;
6334 struct elf_aarch64_link_hash_table *globals;
6335 bfd_boolean save_addend = FALSE;
6338 globals = elf_aarch64_hash_table (info);
6340 symtab_hdr = &elf_symtab_hdr (input_bfd);
6341 sym_hashes = elf_sym_hashes (input_bfd);
6344 relend = relocs + input_section->reloc_count;
6345 for (; rel < relend; rel++)
6347 unsigned int r_type;
6348 bfd_reloc_code_real_type bfd_r_type;
6349 bfd_reloc_code_real_type relaxed_bfd_r_type;
6350 reloc_howto_type *howto;
6351 unsigned long r_symndx;
6352 Elf_Internal_Sym *sym;
6354 struct elf_link_hash_entry *h;
6356 bfd_reloc_status_type r;
6359 bfd_boolean unresolved_reloc = FALSE;
6360 char *error_message = NULL;
6362 r_symndx = ELFNN_R_SYM (rel->r_info);
6363 r_type = ELFNN_R_TYPE (rel->r_info);
6365 bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
6366 howto = bfd_reloc.howto;
6369 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
6371 bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto);
6377 if (r_symndx < symtab_hdr->sh_info)
6379 sym = local_syms + r_symndx;
6380 sym_type = ELFNN_ST_TYPE (sym->st_info);
6381 sec = local_sections[r_symndx];
6383 /* An object file might have a reference to a local
6384 undefined symbol. This is a daft object file, but we
6385 should at least do something about it. */
6386 if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL
6387 && bfd_is_und_section (sec)
6388 && ELF_ST_BIND (sym->st_info) != STB_WEAK)
6389 (*info->callbacks->undefined_symbol)
6390 (info, bfd_elf_string_from_elf_section
6391 (input_bfd, symtab_hdr->sh_link, sym->st_name),
6392 input_bfd, input_section, rel->r_offset, TRUE);
6394 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6396 /* Relocate against local STT_GNU_IFUNC symbol. */
6397 if (!bfd_link_relocatable (info)
6398 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6400 h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
6405 /* Set STT_GNU_IFUNC symbol value. */
6406 h->root.u.def.value = sym->st_value;
6407 h->root.u.def.section = sec;
6412 bfd_boolean warned, ignored;
6414 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6415 r_symndx, symtab_hdr, sym_hashes,
6417 unresolved_reloc, warned, ignored);
6422 if (sec != NULL && discarded_section (sec))
6423 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6424 rel, 1, relend, howto, 0, contents);
6426 if (bfd_link_relocatable (info))
6430 name = h->root.root.string;
6433 name = (bfd_elf_string_from_elf_section
6434 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6435 if (name == NULL || *name == '\0')
6436 name = bfd_section_name (input_bfd, sec);
6440 && r_type != R_AARCH64_NONE
6441 && r_type != R_AARCH64_NULL
6443 || h->root.type == bfd_link_hash_defined
6444 || h->root.type == bfd_link_hash_defweak)
6445 && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS))
6448 ((sym_type == STT_TLS
6449 /* xgettext:c-format */
6450 ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s")
6451 /* xgettext:c-format */
6452 : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")),
6454 input_section, (uint64_t) rel->r_offset, howto->name, name);
6457 /* We relax only if we can see that there can be a valid transition
6458 from a reloc type to another.
6459 We call elfNN_aarch64_final_link_relocate unless we're completely
6460 done, i.e., the relaxation produced the final output we want. */
6462 relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type,
6464 if (relaxed_bfd_r_type != bfd_r_type)
6466 bfd_r_type = relaxed_bfd_r_type;
6467 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
6468 BFD_ASSERT (howto != NULL);
6469 r_type = howto->type;
6470 r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h);
6471 unresolved_reloc = 0;
6474 r = bfd_reloc_continue;
6476 /* There may be multiple consecutive relocations for the
6477 same offset. In that case we are supposed to treat the
6478 output of each relocation as the addend for the next. */
6479 if (rel + 1 < relend
6480 && rel->r_offset == rel[1].r_offset
6481 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE
6482 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL)
6485 save_addend = FALSE;
6487 if (r == bfd_reloc_continue)
6488 r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd,
6489 input_section, contents, rel,
6490 relocation, info, sec,
6491 h, &unresolved_reloc,
6492 save_addend, &addend, sym);
6494 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
6496 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
6497 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
6498 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
6499 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
6500 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
6501 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
6502 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
6503 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
6504 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6506 bfd_boolean need_relocs = FALSE;
6511 off = symbol_got_offset (input_bfd, h, r_symndx);
6512 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6515 (!bfd_link_executable (info) || indx != 0) &&
6517 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6518 || h->root.type != bfd_link_hash_undefweak);
6520 BFD_ASSERT (globals->root.srelgot != NULL);
6524 Elf_Internal_Rela rela;
6525 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD));
6527 rela.r_offset = globals->root.sgot->output_section->vma +
6528 globals->root.sgot->output_offset + off;
6531 loc = globals->root.srelgot->contents;
6532 loc += globals->root.srelgot->reloc_count++
6533 * RELOC_SIZE (htab);
6534 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6536 bfd_reloc_code_real_type real_type =
6537 elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
6539 if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
6540 || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6541 || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
6543 /* For local dynamic, don't generate DTPREL in any case.
6544 Initialize the DTPREL slot into zero, so we get module
6545 base address when invoke runtime TLS resolver. */
6546 bfd_put_NN (output_bfd, 0,
6547 globals->root.sgot->contents + off
6552 bfd_put_NN (output_bfd,
6553 relocation - dtpoff_base (info),
6554 globals->root.sgot->contents + off
6559 /* This TLS symbol is global. We emit a
6560 relocation to fixup the tls offset at load
6563 ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL));
6566 (globals->root.sgot->output_section->vma
6567 + globals->root.sgot->output_offset + off
6570 loc = globals->root.srelgot->contents;
6571 loc += globals->root.srelgot->reloc_count++
6572 * RELOC_SIZE (globals);
6573 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6574 bfd_put_NN (output_bfd, (bfd_vma) 0,
6575 globals->root.sgot->contents + off
6581 bfd_put_NN (output_bfd, (bfd_vma) 1,
6582 globals->root.sgot->contents + off);
6583 bfd_put_NN (output_bfd,
6584 relocation - dtpoff_base (info),
6585 globals->root.sgot->contents + off
6589 symbol_got_offset_mark (input_bfd, h, r_symndx);
6593 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
6594 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
6595 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
6596 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6597 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
6598 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6600 bfd_boolean need_relocs = FALSE;
6605 off = symbol_got_offset (input_bfd, h, r_symndx);
6607 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6610 (!bfd_link_executable (info) || indx != 0) &&
6612 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6613 || h->root.type != bfd_link_hash_undefweak);
6615 BFD_ASSERT (globals->root.srelgot != NULL);
6619 Elf_Internal_Rela rela;
6622 rela.r_addend = relocation - dtpoff_base (info);
6626 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL));
6627 rela.r_offset = globals->root.sgot->output_section->vma +
6628 globals->root.sgot->output_offset + off;
6630 loc = globals->root.srelgot->contents;
6631 loc += globals->root.srelgot->reloc_count++
6632 * RELOC_SIZE (htab);
6634 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6636 bfd_put_NN (output_bfd, rela.r_addend,
6637 globals->root.sgot->contents + off);
6640 bfd_put_NN (output_bfd, relocation - tpoff_base (info),
6641 globals->root.sgot->contents + off);
6643 symbol_got_offset_mark (input_bfd, h, r_symndx);
6647 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
6648 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
6649 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
6650 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
6651 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
6652 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6653 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6654 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
6656 bfd_boolean need_relocs = FALSE;
6657 int indx = h && h->dynindx != -1 ? h->dynindx : 0;
6658 bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx);
6660 need_relocs = (h == NULL
6661 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6662 || h->root.type != bfd_link_hash_undefweak);
6664 BFD_ASSERT (globals->root.srelgot != NULL);
6665 BFD_ASSERT (globals->root.sgot != NULL);
6670 Elf_Internal_Rela rela;
6671 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC));
6674 rela.r_offset = (globals->root.sgotplt->output_section->vma
6675 + globals->root.sgotplt->output_offset
6676 + off + globals->sgotplt_jump_table_size);
6679 rela.r_addend = relocation - dtpoff_base (info);
6681 /* Allocate the next available slot in the PLT reloc
6682 section to hold our R_AARCH64_TLSDESC, the next
6683 available slot is determined from reloc_count,
6684 which we step. But note, reloc_count was
6685 artifically moved down while allocating slots for
6686 real PLT relocs such that all of the PLT relocs
6687 will fit above the initial reloc_count and the
6688 extra stuff will fit below. */
6689 loc = globals->root.srelplt->contents;
6690 loc += globals->root.srelplt->reloc_count++
6691 * RELOC_SIZE (globals);
6693 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6695 bfd_put_NN (output_bfd, (bfd_vma) 0,
6696 globals->root.sgotplt->contents + off +
6697 globals->sgotplt_jump_table_size);
6698 bfd_put_NN (output_bfd, (bfd_vma) 0,
6699 globals->root.sgotplt->contents + off +
6700 globals->sgotplt_jump_table_size +
6704 symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx);
6711 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6712 because such sections are not SEC_ALLOC and thus ld.so will
6713 not process them. */
6714 if (unresolved_reloc
6715 && !((input_section->flags & SEC_DEBUGGING) != 0
6717 && _bfd_elf_section_offset (output_bfd, info, input_section,
6718 +rel->r_offset) != (bfd_vma) - 1)
6721 /* xgettext:c-format */
6722 (_("%pB(%pA+%#" PRIx64 "): "
6723 "unresolvable %s relocation against symbol `%s'"),
6724 input_bfd, input_section, (uint64_t) rel->r_offset, howto->name,
6725 h->root.root.string);
6729 if (r != bfd_reloc_ok && r != bfd_reloc_continue)
6731 bfd_reloc_code_real_type real_r_type
6732 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
6736 case bfd_reloc_overflow:
6737 (*info->callbacks->reloc_overflow)
6738 (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
6739 input_bfd, input_section, rel->r_offset);
6740 if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
6741 || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
6743 (*info->callbacks->warning)
6745 _("too many GOT entries for -fpic, "
6746 "please recompile with -fPIC"),
6747 name, input_bfd, input_section, rel->r_offset);
6750 /* Overflow can occur when a variable is referenced with a type
6751 that has a larger alignment than the type with which it was
6753 file1.c: extern int foo; int a (void) { return foo; }
6754 file2.c: char bar, foo, baz;
6755 If the variable is placed into a data section at an offset
6756 that is incompatible with the larger alignment requirement
6757 overflow will occur. (Strictly speaking this is not overflow
6758 but rather an alignment problem, but the bfd_reloc_ error
6759 enum does not have a value to cover that situation).
6761 Try to catch this situation here and provide a more helpful
6762 error message to the user. */
6763 if (addend & ((1 << howto->rightshift) - 1)
6764 /* FIXME: Are we testing all of the appropriate reloc
6766 && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL
6767 || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12
6768 || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12
6769 || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12
6770 || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12))
6772 info->callbacks->warning
6773 (info, _("one possible cause of this error is that the \
6774 symbol is being referenced in the indicated code as if it had a larger \
6775 alignment than was declared where it was defined"),
6776 name, input_bfd, input_section, rel->r_offset);
6780 case bfd_reloc_undefined:
6781 (*info->callbacks->undefined_symbol)
6782 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
6785 case bfd_reloc_outofrange:
6786 error_message = _("out of range");
6789 case bfd_reloc_notsupported:
6790 error_message = _("unsupported relocation");
6793 case bfd_reloc_dangerous:
6794 /* error_message should already be set. */
6798 error_message = _("unknown error");
6802 BFD_ASSERT (error_message != NULL);
6803 (*info->callbacks->reloc_dangerous)
6804 (info, error_message, input_bfd, input_section, rel->r_offset);
6816 /* Set the right machine number. */
6819 elfNN_aarch64_object_p (bfd *abfd)
6822 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32);
6824 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64);
6829 /* Function to keep AArch64 specific flags in the ELF header. */
6832 elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags)
6834 if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags)
6839 elf_elfheader (abfd)->e_flags = flags;
6840 elf_flags_init (abfd) = TRUE;
6846 /* Merge backend specific data from an object file to the output
6847 object file when linking. */
6850 elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
6852 bfd *obfd = info->output_bfd;
6855 bfd_boolean flags_compatible = TRUE;
6858 /* Check if we have the same endianess. */
6859 if (!_bfd_generic_verify_endian_match (ibfd, info))
6862 if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
6865 /* The input BFD must have had its flags initialised. */
6866 /* The following seems bogus to me -- The flags are initialized in
6867 the assembler but I don't think an elf_flags_init field is
6868 written into the object. */
6869 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6871 in_flags = elf_elfheader (ibfd)->e_flags;
6872 out_flags = elf_elfheader (obfd)->e_flags;
6874 if (!elf_flags_init (obfd))
6876 /* If the input is the default architecture and had the default
6877 flags then do not bother setting the flags for the output
6878 architecture, instead allow future merges to do this. If no
6879 future merges ever set these flags then they will retain their
6880 uninitialised values, which surprise surprise, correspond
6881 to the default values. */
6882 if (bfd_get_arch_info (ibfd)->the_default
6883 && elf_elfheader (ibfd)->e_flags == 0)
6886 elf_flags_init (obfd) = TRUE;
6887 elf_elfheader (obfd)->e_flags = in_flags;
6889 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6890 && bfd_get_arch_info (obfd)->the_default)
6891 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
6892 bfd_get_mach (ibfd));
6897 /* Identical flags must be compatible. */
6898 if (in_flags == out_flags)
6901 /* Check to see if the input BFD actually contains any sections. If
6902 not, its flags may not have been initialised either, but it
6903 cannot actually cause any incompatiblity. Do not short-circuit
6904 dynamic objects; their section list may be emptied by
6905 elf_link_add_object_symbols.
6907 Also check to see if there are no code sections in the input.
6908 In this case there is no need to check for code specific flags.
6909 XXX - do we need to worry about floating-point format compatability
6910 in data sections ? */
6911 if (!(ibfd->flags & DYNAMIC))
6913 bfd_boolean null_input_bfd = TRUE;
6914 bfd_boolean only_data_sections = TRUE;
6916 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6918 if ((bfd_get_section_flags (ibfd, sec)
6919 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6920 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6921 only_data_sections = FALSE;
6923 null_input_bfd = FALSE;
6927 if (null_input_bfd || only_data_sections)
6931 return flags_compatible;
6934 /* Display the flags field. */
6937 elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr)
6939 FILE *file = (FILE *) ptr;
6940 unsigned long flags;
6942 BFD_ASSERT (abfd != NULL && ptr != NULL);
6944 /* Print normal ELF private data. */
6945 _bfd_elf_print_private_bfd_data (abfd, ptr);
6947 flags = elf_elfheader (abfd)->e_flags;
6948 /* Ignore init flag - it may not be set, despite the flags field
6949 containing valid data. */
6951 /* xgettext:c-format */
6952 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
6955 fprintf (file, _("<Unrecognised flag bits set>"));
6962 /* Find dynamic relocs for H that apply to read-only sections. */
6965 readonly_dynrelocs (struct elf_link_hash_entry *h)
6967 struct elf_dyn_relocs *p;
6969 for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
6971 asection *s = p->sec->output_section;
6973 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6979 /* Return true if we need copy relocation against EH. */
6982 need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh)
6984 struct elf_dyn_relocs *p;
6987 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6989 /* If there is any pc-relative reference, we need to keep copy relocation
6990 to avoid propagating the relocation into runtime that current glibc
6991 does not support. */
6995 s = p->sec->output_section;
6996 /* Need copy relocation if it's against read-only section. */
6997 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7004 /* Adjust a symbol defined by a dynamic object and referenced by a
7005 regular object. The current definition is in some section of the
7006 dynamic object, but we're not including those sections. We have to
7007 change the definition to something the rest of the link can
7011 elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info,
7012 struct elf_link_hash_entry *h)
7014 struct elf_aarch64_link_hash_table *htab;
7017 /* If this is a function, put it in the procedure linkage table. We
7018 will fill in the contents of the procedure linkage table later,
7019 when we know the address of the .got section. */
7020 if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
7022 if (h->plt.refcount <= 0
7023 || (h->type != STT_GNU_IFUNC
7024 && (SYMBOL_CALLS_LOCAL (info, h)
7025 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7026 && h->root.type == bfd_link_hash_undefweak))))
7028 /* This case can occur if we saw a CALL26 reloc in
7029 an input file, but the symbol wasn't referred to
7030 by a dynamic object or all references were
7031 garbage collected. In which case we can end up
7033 h->plt.offset = (bfd_vma) - 1;
7040 /* Otherwise, reset to -1. */
7041 h->plt.offset = (bfd_vma) - 1;
7044 /* If this is a weak symbol, and there is a real definition, the
7045 processor independent code will have arranged for us to see the
7046 real definition first, and we can just use the same value. */
7047 if (h->is_weakalias)
7049 struct elf_link_hash_entry *def = weakdef (h);
7050 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
7051 h->root.u.def.section = def->root.u.def.section;
7052 h->root.u.def.value = def->root.u.def.value;
7053 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
7054 h->non_got_ref = def->non_got_ref;
7058 /* If we are creating a shared library, we must presume that the
7059 only references to the symbol are via the global offset table.
7060 For such cases we need not do anything here; the relocations will
7061 be handled correctly by relocate_section. */
7062 if (bfd_link_pic (info))
7065 /* If there are no references to this symbol that do not use the
7066 GOT, we don't need to generate a copy reloc. */
7067 if (!h->non_got_ref)
7070 /* If -z nocopyreloc was given, we won't generate them either. */
7071 if (info->nocopyreloc)
7077 if (ELIMINATE_COPY_RELOCS)
7079 struct elf_aarch64_link_hash_entry *eh;
7080 /* If we don't find any dynamic relocs in read-only sections, then
7081 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7082 eh = (struct elf_aarch64_link_hash_entry *) h;
7083 if (!need_copy_relocation_p (eh))
7090 /* We must allocate the symbol in our .dynbss section, which will
7091 become part of the .bss section of the executable. There will be
7092 an entry for this symbol in the .dynsym section. The dynamic
7093 object will contain position independent code, so all references
7094 from the dynamic object to this symbol will go through the global
7095 offset table. The dynamic linker will use the .dynsym entry to
7096 determine the address it must put in the global offset table, so
7097 both the dynamic object and the regular object will refer to the
7098 same memory location for the variable. */
7100 htab = elf_aarch64_hash_table (info);
7102 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
7103 to copy the initial value out of the dynamic object and into the
7104 runtime process image. */
7105 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7107 s = htab->root.sdynrelro;
7108 srel = htab->root.sreldynrelro;
7112 s = htab->root.sdynbss;
7113 srel = htab->root.srelbss;
7115 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7117 srel->size += RELOC_SIZE (htab);
7121 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7126 elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number)
7128 struct elf_aarch64_local_symbol *locals;
7129 locals = elf_aarch64_locals (abfd);
7132 locals = (struct elf_aarch64_local_symbol *)
7133 bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol));
7136 elf_aarch64_locals (abfd) = locals;
7141 /* Create the .got section to hold the global offset table. */
7144 aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
7146 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7149 struct elf_link_hash_entry *h;
7150 struct elf_link_hash_table *htab = elf_hash_table (info);
7152 /* This function may be called more than once. */
7153 if (htab->sgot != NULL)
7156 flags = bed->dynamic_sec_flags;
7158 s = bfd_make_section_anyway_with_flags (abfd,
7159 (bed->rela_plts_and_copies_p
7160 ? ".rela.got" : ".rel.got"),
7161 (bed->dynamic_sec_flags
7164 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
7168 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
7170 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
7173 htab->sgot->size += GOT_ENTRY_SIZE;
7175 if (bed->want_got_sym)
7177 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7178 (or .got.plt) section. We don't do this in the linker script
7179 because we don't want to define the symbol if we are not creating
7180 a global offset table. */
7181 h = _bfd_elf_define_linkage_sym (abfd, info, s,
7182 "_GLOBAL_OFFSET_TABLE_");
7183 elf_hash_table (info)->hgot = h;
7188 if (bed->want_got_plt)
7190 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
7192 || !bfd_set_section_alignment (abfd, s,
7193 bed->s->log_file_align))
7198 /* The first bit of the global offset table is the header. */
7199 s->size += bed->got_header_size;
7204 /* Look through the relocs for a section during the first phase. */
7207 elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
7208 asection *sec, const Elf_Internal_Rela *relocs)
7210 Elf_Internal_Shdr *symtab_hdr;
7211 struct elf_link_hash_entry **sym_hashes;
7212 const Elf_Internal_Rela *rel;
7213 const Elf_Internal_Rela *rel_end;
7216 struct elf_aarch64_link_hash_table *htab;
7218 if (bfd_link_relocatable (info))
7221 BFD_ASSERT (is_aarch64_elf (abfd));
7223 htab = elf_aarch64_hash_table (info);
7226 symtab_hdr = &elf_symtab_hdr (abfd);
7227 sym_hashes = elf_sym_hashes (abfd);
7229 rel_end = relocs + sec->reloc_count;
7230 for (rel = relocs; rel < rel_end; rel++)
7232 struct elf_link_hash_entry *h;
7233 unsigned int r_symndx;
7234 unsigned int r_type;
7235 bfd_reloc_code_real_type bfd_r_type;
7236 Elf_Internal_Sym *isym;
7238 r_symndx = ELFNN_R_SYM (rel->r_info);
7239 r_type = ELFNN_R_TYPE (rel->r_info);
7241 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7243 /* xgettext:c-format */
7244 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
7248 if (r_symndx < symtab_hdr->sh_info)
7250 /* A local symbol. */
7251 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7256 /* Check relocation against local STT_GNU_IFUNC symbol. */
7257 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
7259 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
7264 /* Fake a STT_GNU_IFUNC symbol. */
7265 h->type = STT_GNU_IFUNC;
7268 h->forced_local = 1;
7269 h->root.type = bfd_link_hash_defined;
7276 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7277 while (h->root.type == bfd_link_hash_indirect
7278 || h->root.type == bfd_link_hash_warning)
7279 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7282 /* Could be done earlier, if h were already available. */
7283 bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
7287 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7288 This shows up in particular in an R_AARCH64_PREL64 in large model
7289 when calculating the pc-relative address to .got section which is
7290 used to initialize the gp register. */
7291 if (h->root.root.string
7292 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
7294 if (htab->root.dynobj == NULL)
7295 htab->root.dynobj = abfd;
7297 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7300 BFD_ASSERT (h == htab->root.hgot);
7303 /* Create the ifunc sections for static executables. If we
7304 never see an indirect function symbol nor we are building
7305 a static executable, those sections will be empty and
7306 won't appear in output. */
7312 case BFD_RELOC_AARCH64_ADD_LO12:
7313 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7314 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7315 case BFD_RELOC_AARCH64_CALL26:
7316 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7317 case BFD_RELOC_AARCH64_JUMP26:
7318 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7319 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
7320 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
7321 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7322 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
7323 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
7324 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
7325 case BFD_RELOC_AARCH64_NN:
7326 if (htab->root.dynobj == NULL)
7327 htab->root.dynobj = abfd;
7328 if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
7333 /* It is referenced by a non-shared object. */
7339 case BFD_RELOC_AARCH64_16:
7341 case BFD_RELOC_AARCH64_32:
7343 if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0)
7346 /* This is an absolute symbol. It represents a value instead
7348 && ((h->root.type == bfd_link_hash_defined
7349 && bfd_is_abs_section (h->root.u.def.section))
7350 /* This is an undefined symbol. */
7351 || h->root.type == bfd_link_hash_undefined))
7354 /* For local symbols, defined global symbols in a non-ABS section,
7355 it is assumed that the value is an address. */
7356 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7358 /* xgettext:c-format */
7359 (_("%pB: relocation %s against `%s' can not be used when making "
7361 abfd, elfNN_aarch64_howto_table[howto_index].name,
7362 (h) ? h->root.root.string : "a local symbol");
7363 bfd_set_error (bfd_error_bad_value);
7369 case BFD_RELOC_AARCH64_MOVW_G0_NC:
7370 case BFD_RELOC_AARCH64_MOVW_G1_NC:
7371 case BFD_RELOC_AARCH64_MOVW_G2_NC:
7372 case BFD_RELOC_AARCH64_MOVW_G3:
7373 if (bfd_link_pic (info))
7375 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7377 /* xgettext:c-format */
7378 (_("%pB: relocation %s against `%s' can not be used when making "
7379 "a shared object; recompile with -fPIC"),
7380 abfd, elfNN_aarch64_howto_table[howto_index].name,
7381 (h) ? h->root.root.string : "a local symbol");
7382 bfd_set_error (bfd_error_bad_value);
7387 case BFD_RELOC_AARCH64_16_PCREL:
7388 case BFD_RELOC_AARCH64_32_PCREL:
7389 case BFD_RELOC_AARCH64_64_PCREL:
7390 case BFD_RELOC_AARCH64_ADD_LO12:
7391 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
7392 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7393 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
7394 case BFD_RELOC_AARCH64_LDST128_LO12:
7395 case BFD_RELOC_AARCH64_LDST16_LO12:
7396 case BFD_RELOC_AARCH64_LDST32_LO12:
7397 case BFD_RELOC_AARCH64_LDST64_LO12:
7398 case BFD_RELOC_AARCH64_LDST8_LO12:
7399 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
7400 if (h == NULL || bfd_link_pic (info))
7404 case BFD_RELOC_AARCH64_NN:
7406 /* We don't need to handle relocs into sections not going into
7407 the "real" output. */
7408 if ((sec->flags & SEC_ALLOC) == 0)
7413 if (!bfd_link_pic (info))
7416 h->plt.refcount += 1;
7417 h->pointer_equality_needed = 1;
7420 /* No need to do anything if we're not creating a shared
7422 if (!(bfd_link_pic (info)
7423 /* If on the other hand, we are creating an executable, we
7424 may need to keep relocations for symbols satisfied by a
7425 dynamic library if we manage to avoid copy relocs for the
7428 NOTE: Currently, there is no support of copy relocs
7429 elimination on pc-relative relocation types, because there is
7430 no dynamic relocation support for them in glibc. We still
7431 record the dynamic symbol reference for them. This is
7432 because one symbol may be referenced by both absolute
7433 relocation (for example, BFD_RELOC_AARCH64_NN) and
7434 pc-relative relocation. We need full symbol reference
7435 information to make correct decision later in
7436 elfNN_aarch64_adjust_dynamic_symbol. */
7437 || (ELIMINATE_COPY_RELOCS
7438 && !bfd_link_pic (info)
7440 && (h->root.type == bfd_link_hash_defweak
7441 || !h->def_regular))))
7445 struct elf_dyn_relocs *p;
7446 struct elf_dyn_relocs **head;
7447 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7449 /* We must copy these reloc types into the output file.
7450 Create a reloc section in dynobj and make room for
7454 if (htab->root.dynobj == NULL)
7455 htab->root.dynobj = abfd;
7457 sreloc = _bfd_elf_make_dynamic_reloc_section
7458 (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
7464 /* If this is a global symbol, we count the number of
7465 relocations we need for this symbol. */
7468 struct elf_aarch64_link_hash_entry *eh;
7469 eh = (struct elf_aarch64_link_hash_entry *) h;
7470 head = &eh->dyn_relocs;
7474 /* Track dynamic relocs needed for local syms too.
7475 We really need local syms available to do this
7481 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7486 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
7490 /* Beware of type punned pointers vs strict aliasing
7492 vpp = &(elf_section_data (s)->local_dynrel);
7493 head = (struct elf_dyn_relocs **) vpp;
7497 if (p == NULL || p->sec != sec)
7499 bfd_size_type amt = sizeof *p;
7500 p = ((struct elf_dyn_relocs *)
7501 bfd_zalloc (htab->root.dynobj, amt));
7511 if (elfNN_aarch64_howto_table[howto_index].pc_relative)
7516 /* RR: We probably want to keep a consistency check that
7517 there are no dangling GOT_PAGE relocs. */
7518 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7519 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7520 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7521 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
7522 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
7523 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7524 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
7525 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
7526 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
7527 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
7528 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
7529 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7530 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
7531 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
7532 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
7533 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7534 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
7535 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7536 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
7537 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7538 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
7539 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
7540 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
7541 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7542 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
7543 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
7544 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7545 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
7546 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
7547 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
7548 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
7549 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
7550 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
7551 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
7554 unsigned old_got_type;
7556 got_type = aarch64_reloc_got_type (bfd_r_type);
7560 h->got.refcount += 1;
7561 old_got_type = elf_aarch64_hash_entry (h)->got_type;
7565 struct elf_aarch64_local_symbol *locals;
7567 if (!elfNN_aarch64_allocate_local_symbols
7568 (abfd, symtab_hdr->sh_info))
7571 locals = elf_aarch64_locals (abfd);
7572 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7573 locals[r_symndx].got_refcount += 1;
7574 old_got_type = locals[r_symndx].got_type;
7577 /* If a variable is accessed with both general dynamic TLS
7578 methods, two slots may be created. */
7579 if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type))
7580 got_type |= old_got_type;
7582 /* We will already have issued an error message if there
7583 is a TLS/non-TLS mismatch, based on the symbol type.
7584 So just combine any TLS types needed. */
7585 if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL
7586 && got_type != GOT_NORMAL)
7587 got_type |= old_got_type;
7589 /* If the symbol is accessed by both IE and GD methods, we
7590 are able to relax. Turn off the GD flag, without
7591 messing up with any other kind of TLS types that may be
7593 if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type))
7594 got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD);
7596 if (old_got_type != got_type)
7599 elf_aarch64_hash_entry (h)->got_type = got_type;
7602 struct elf_aarch64_local_symbol *locals;
7603 locals = elf_aarch64_locals (abfd);
7604 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7605 locals[r_symndx].got_type = got_type;
7609 if (htab->root.dynobj == NULL)
7610 htab->root.dynobj = abfd;
7611 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7616 case BFD_RELOC_AARCH64_CALL26:
7617 case BFD_RELOC_AARCH64_JUMP26:
7618 /* If this is a local symbol then we resolve it
7619 directly without creating a PLT entry. */
7624 if (h->plt.refcount <= 0)
7625 h->plt.refcount = 1;
7627 h->plt.refcount += 1;
7638 /* Treat mapping symbols as special target symbols. */
7641 elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED,
7644 return bfd_is_aarch64_special_symbol_name (sym->name,
7645 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY);
7648 /* This is a copy of elf_find_function () from elf.c except that
7649 AArch64 mapping symbols are ignored when looking for function names. */
7652 aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
7656 const char **filename_ptr,
7657 const char **functionname_ptr)
7659 const char *filename = NULL;
7660 asymbol *func = NULL;
7661 bfd_vma low_func = 0;
7664 for (p = symbols; *p != NULL; p++)
7668 q = (elf_symbol_type *) * p;
7670 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
7675 filename = bfd_asymbol_name (&q->symbol);
7679 /* Skip mapping symbols. */
7680 if ((q->symbol.flags & BSF_LOCAL)
7681 && (bfd_is_aarch64_special_symbol_name
7682 (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)))
7685 if (bfd_get_section (&q->symbol) == section
7686 && q->symbol.value >= low_func && q->symbol.value <= offset)
7688 func = (asymbol *) q;
7689 low_func = q->symbol.value;
7699 *filename_ptr = filename;
7700 if (functionname_ptr)
7701 *functionname_ptr = bfd_asymbol_name (func);
7707 /* Find the nearest line to a particular section and offset, for error
7708 reporting. This code is a duplicate of the code in elf.c, except
7709 that it uses aarch64_elf_find_function. */
7712 elfNN_aarch64_find_nearest_line (bfd *abfd,
7716 const char **filename_ptr,
7717 const char **functionname_ptr,
7718 unsigned int *line_ptr,
7719 unsigned int *discriminator_ptr)
7721 bfd_boolean found = FALSE;
7723 if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
7724 filename_ptr, functionname_ptr,
7725 line_ptr, discriminator_ptr,
7726 dwarf_debug_sections, 0,
7727 &elf_tdata (abfd)->dwarf2_find_line_info))
7729 if (!*functionname_ptr)
7730 aarch64_elf_find_function (abfd, symbols, section, offset,
7731 *filename_ptr ? NULL : filename_ptr,
7737 /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64
7738 toolchain uses DWARF1. */
7740 if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7741 &found, filename_ptr,
7742 functionname_ptr, line_ptr,
7743 &elf_tdata (abfd)->line_info))
7746 if (found && (*functionname_ptr || *line_ptr))
7749 if (symbols == NULL)
7752 if (!aarch64_elf_find_function (abfd, symbols, section, offset,
7753 filename_ptr, functionname_ptr))
7761 elfNN_aarch64_find_inliner_info (bfd *abfd,
7762 const char **filename_ptr,
7763 const char **functionname_ptr,
7764 unsigned int *line_ptr)
7767 found = _bfd_dwarf2_find_inliner_info
7768 (abfd, filename_ptr,
7769 functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info);
7775 elfNN_aarch64_post_process_headers (bfd *abfd,
7776 struct bfd_link_info *link_info)
7778 Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
7780 i_ehdrp = elf_elfheader (abfd);
7781 i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
7783 _bfd_elf_post_process_headers (abfd, link_info);
7786 static enum elf_reloc_type_class
7787 elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
7788 const asection *rel_sec ATTRIBUTE_UNUSED,
7789 const Elf_Internal_Rela *rela)
7791 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
7793 if (htab->root.dynsym != NULL
7794 && htab->root.dynsym->contents != NULL)
7796 /* Check relocation against STT_GNU_IFUNC symbol if there are
7798 bfd *abfd = info->output_bfd;
7799 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7800 unsigned long r_symndx = ELFNN_R_SYM (rela->r_info);
7801 if (r_symndx != STN_UNDEF)
7803 Elf_Internal_Sym sym;
7804 if (!bed->s->swap_symbol_in (abfd,
7805 (htab->root.dynsym->contents
7806 + r_symndx * bed->s->sizeof_sym),
7809 /* xgettext:c-format */
7810 _bfd_error_handler (_("%pB symbol number %lu references"
7811 " nonexistent SHT_SYMTAB_SHNDX section"),
7813 /* Ideally an error class should be returned here. */
7815 else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
7816 return reloc_class_ifunc;
7820 switch ((int) ELFNN_R_TYPE (rela->r_info))
7822 case AARCH64_R (IRELATIVE):
7823 return reloc_class_ifunc;
7824 case AARCH64_R (RELATIVE):
7825 return reloc_class_relative;
7826 case AARCH64_R (JUMP_SLOT):
7827 return reloc_class_plt;
7828 case AARCH64_R (COPY):
7829 return reloc_class_copy;
7831 return reloc_class_normal;
7835 /* Handle an AArch64 specific section when reading an object file. This is
7836 called when bfd_section_from_shdr finds a section with an unknown
7840 elfNN_aarch64_section_from_shdr (bfd *abfd,
7841 Elf_Internal_Shdr *hdr,
7842 const char *name, int shindex)
7844 /* There ought to be a place to keep ELF backend specific flags, but
7845 at the moment there isn't one. We just keep track of the
7846 sections by their name, instead. Fortunately, the ABI gives
7847 names for all the AArch64 specific sections, so we will probably get
7849 switch (hdr->sh_type)
7851 case SHT_AARCH64_ATTRIBUTES:
7858 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
7864 /* A structure used to record a list of sections, independently
7865 of the next and prev fields in the asection structure. */
7866 typedef struct section_list
7869 struct section_list *next;
7870 struct section_list *prev;
7874 /* Unfortunately we need to keep a list of sections for which
7875 an _aarch64_elf_section_data structure has been allocated. This
7876 is because it is possible for functions like elfNN_aarch64_write_section
7877 to be called on a section which has had an elf_data_structure
7878 allocated for it (and so the used_by_bfd field is valid) but
7879 for which the AArch64 extended version of this structure - the
7880 _aarch64_elf_section_data structure - has not been allocated. */
7881 static section_list *sections_with_aarch64_elf_section_data = NULL;
7884 record_section_with_aarch64_elf_section_data (asection *sec)
7886 struct section_list *entry;
7888 entry = bfd_malloc (sizeof (*entry));
7892 entry->next = sections_with_aarch64_elf_section_data;
7894 if (entry->next != NULL)
7895 entry->next->prev = entry;
7896 sections_with_aarch64_elf_section_data = entry;
7899 static struct section_list *
7900 find_aarch64_elf_section_entry (asection *sec)
7902 struct section_list *entry;
7903 static struct section_list *last_entry = NULL;
7905 /* This is a short cut for the typical case where the sections are added
7906 to the sections_with_aarch64_elf_section_data list in forward order and
7907 then looked up here in backwards order. This makes a real difference
7908 to the ld-srec/sec64k.exp linker test. */
7909 entry = sections_with_aarch64_elf_section_data;
7910 if (last_entry != NULL)
7912 if (last_entry->sec == sec)
7914 else if (last_entry->next != NULL && last_entry->next->sec == sec)
7915 entry = last_entry->next;
7918 for (; entry; entry = entry->next)
7919 if (entry->sec == sec)
7923 /* Record the entry prior to this one - it is the entry we are
7924 most likely to want to locate next time. Also this way if we
7925 have been called from
7926 unrecord_section_with_aarch64_elf_section_data () we will not
7927 be caching a pointer that is about to be freed. */
7928 last_entry = entry->prev;
7934 unrecord_section_with_aarch64_elf_section_data (asection *sec)
7936 struct section_list *entry;
7938 entry = find_aarch64_elf_section_entry (sec);
7942 if (entry->prev != NULL)
7943 entry->prev->next = entry->next;
7944 if (entry->next != NULL)
7945 entry->next->prev = entry->prev;
7946 if (entry == sections_with_aarch64_elf_section_data)
7947 sections_with_aarch64_elf_section_data = entry->next;
7956 struct bfd_link_info *info;
7959 int (*func) (void *, const char *, Elf_Internal_Sym *,
7960 asection *, struct elf_link_hash_entry *);
7961 } output_arch_syminfo;
7963 enum map_symbol_type
7970 /* Output a single mapping symbol. */
7973 elfNN_aarch64_output_map_sym (output_arch_syminfo *osi,
7974 enum map_symbol_type type, bfd_vma offset)
7976 static const char *names[2] = { "$x", "$d" };
7977 Elf_Internal_Sym sym;
7979 sym.st_value = (osi->sec->output_section->vma
7980 + osi->sec->output_offset + offset);
7983 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
7984 sym.st_shndx = osi->sec_shndx;
7985 return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
7988 /* Output a single local symbol for a generated stub. */
7991 elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name,
7992 bfd_vma offset, bfd_vma size)
7994 Elf_Internal_Sym sym;
7996 sym.st_value = (osi->sec->output_section->vma
7997 + osi->sec->output_offset + offset);
8000 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
8001 sym.st_shndx = osi->sec_shndx;
8002 return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
8006 aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8008 struct elf_aarch64_stub_hash_entry *stub_entry;
8012 output_arch_syminfo *osi;
8014 /* Massage our args to the form they really have. */
8015 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
8016 osi = (output_arch_syminfo *) in_arg;
8018 stub_sec = stub_entry->stub_sec;
8020 /* Ensure this stub is attached to the current section being
8022 if (stub_sec != osi->sec)
8025 addr = (bfd_vma) stub_entry->stub_offset;
8027 stub_name = stub_entry->output_name;
8029 switch (stub_entry->stub_type)
8031 case aarch64_stub_adrp_branch:
8032 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
8033 sizeof (aarch64_adrp_branch_stub)))
8035 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
8038 case aarch64_stub_long_branch:
8039 if (!elfNN_aarch64_output_stub_sym
8040 (osi, stub_name, addr, sizeof (aarch64_long_branch_stub)))
8042 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
8044 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
8047 case aarch64_stub_erratum_835769_veneer:
8048 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
8049 sizeof (aarch64_erratum_835769_stub)))
8051 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
8054 case aarch64_stub_erratum_843419_veneer:
8055 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
8056 sizeof (aarch64_erratum_843419_stub)))
8058 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
8069 /* Output mapping symbols for linker generated sections. */
8072 elfNN_aarch64_output_arch_local_syms (bfd *output_bfd,
8073 struct bfd_link_info *info,
8075 int (*func) (void *, const char *,
8078 struct elf_link_hash_entry
8081 output_arch_syminfo osi;
8082 struct elf_aarch64_link_hash_table *htab;
8084 htab = elf_aarch64_hash_table (info);
8090 /* Long calls stubs. */
8091 if (htab->stub_bfd && htab->stub_bfd->sections)
8095 for (stub_sec = htab->stub_bfd->sections;
8096 stub_sec != NULL; stub_sec = stub_sec->next)
8098 /* Ignore non-stub sections. */
8099 if (!strstr (stub_sec->name, STUB_SUFFIX))
8104 osi.sec_shndx = _bfd_elf_section_from_bfd_section
8105 (output_bfd, osi.sec->output_section);
8107 /* The first instruction in a stub is always a branch. */
8108 if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
8111 bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
8116 /* Finally, output mapping symbols for the PLT. */
8117 if (!htab->root.splt || htab->root.splt->size == 0)
8120 osi.sec_shndx = _bfd_elf_section_from_bfd_section
8121 (output_bfd, htab->root.splt->output_section);
8122 osi.sec = htab->root.splt;
8124 elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
8130 /* Allocate target specific section data. */
8133 elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec)
8135 if (!sec->used_by_bfd)
8137 _aarch64_elf_section_data *sdata;
8138 bfd_size_type amt = sizeof (*sdata);
8140 sdata = bfd_zalloc (abfd, amt);
8143 sec->used_by_bfd = sdata;
8146 record_section_with_aarch64_elf_section_data (sec);
8148 return _bfd_elf_new_section_hook (abfd, sec);
8153 unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED,
8155 void *ignore ATTRIBUTE_UNUSED)
8157 unrecord_section_with_aarch64_elf_section_data (sec);
8161 elfNN_aarch64_close_and_cleanup (bfd *abfd)
8164 bfd_map_over_sections (abfd,
8165 unrecord_section_via_map_over_sections, NULL);
8167 return _bfd_elf_close_and_cleanup (abfd);
8171 elfNN_aarch64_bfd_free_cached_info (bfd *abfd)
8174 bfd_map_over_sections (abfd,
8175 unrecord_section_via_map_over_sections, NULL);
8177 return _bfd_free_cached_info (abfd);
8180 /* Create dynamic sections. This is different from the ARM backend in that
8181 the got, plt, gotplt and their relocation sections are all created in the
8182 standard part of the bfd elf backend. */
8185 elfNN_aarch64_create_dynamic_sections (bfd *dynobj,
8186 struct bfd_link_info *info)
8188 /* We need to create .got section. */
8189 if (!aarch64_elf_create_got_section (dynobj, info))
8192 return _bfd_elf_create_dynamic_sections (dynobj, info);
8196 /* Allocate space in .plt, .got and associated reloc sections for
8200 elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8202 struct bfd_link_info *info;
8203 struct elf_aarch64_link_hash_table *htab;
8204 struct elf_aarch64_link_hash_entry *eh;
8205 struct elf_dyn_relocs *p;
8207 /* An example of a bfd_link_hash_indirect symbol is versioned
8208 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8209 -> __gxx_personality_v0(bfd_link_hash_defined)
8211 There is no need to process bfd_link_hash_indirect symbols here
8212 because we will also be presented with the concrete instance of
8213 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8214 called to copy all relevant data from the generic to the concrete
8216 if (h->root.type == bfd_link_hash_indirect)
8219 if (h->root.type == bfd_link_hash_warning)
8220 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8222 info = (struct bfd_link_info *) inf;
8223 htab = elf_aarch64_hash_table (info);
8225 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8226 here if it is defined and referenced in a non-shared object. */
8227 if (h->type == STT_GNU_IFUNC
8230 else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
8232 /* Make sure this symbol is output as a dynamic symbol.
8233 Undefined weak syms won't yet be marked as dynamic. */
8234 if (h->dynindx == -1 && !h->forced_local
8235 && h->root.type == bfd_link_hash_undefweak)
8237 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8241 if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
8243 asection *s = htab->root.splt;
8245 /* If this is the first .plt entry, make room for the special
8248 s->size += htab->plt_header_size;
8250 h->plt.offset = s->size;
8252 /* If this symbol is not defined in a regular file, and we are
8253 not generating a shared library, then set the symbol to this
8254 location in the .plt. This is required to make function
8255 pointers compare as equal between the normal executable and
8256 the shared library. */
8257 if (!bfd_link_pic (info) && !h->def_regular)
8259 h->root.u.def.section = s;
8260 h->root.u.def.value = h->plt.offset;
8263 /* Make room for this entry. For now we only create the
8264 small model PLT entries. We later need to find a way
8265 of relaxing into these from the large model PLT entries. */
8266 s->size += PLT_SMALL_ENTRY_SIZE;
8268 /* We also need to make an entry in the .got.plt section, which
8269 will be placed in the .got section by the linker script. */
8270 htab->root.sgotplt->size += GOT_ENTRY_SIZE;
8272 /* We also need to make an entry in the .rela.plt section. */
8273 htab->root.srelplt->size += RELOC_SIZE (htab);
8275 /* We need to ensure that all GOT entries that serve the PLT
8276 are consecutive with the special GOT slots [0] [1] and
8277 [2]. Any addtional relocations, such as
8278 R_AARCH64_TLSDESC, must be placed after the PLT related
8279 entries. We abuse the reloc_count such that during
8280 sizing we adjust reloc_count to indicate the number of
8281 PLT related reserved entries. In subsequent phases when
8282 filling in the contents of the reloc entries, PLT related
8283 entries are placed by computing their PLT index (0
8284 .. reloc_count). While other none PLT relocs are placed
8285 at the slot indicated by reloc_count and reloc_count is
8288 htab->root.srelplt->reloc_count++;
8292 h->plt.offset = (bfd_vma) - 1;
8298 h->plt.offset = (bfd_vma) - 1;
8302 eh = (struct elf_aarch64_link_hash_entry *) h;
8303 eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8305 if (h->got.refcount > 0)
8308 unsigned got_type = elf_aarch64_hash_entry (h)->got_type;
8310 h->got.offset = (bfd_vma) - 1;
8312 dyn = htab->root.dynamic_sections_created;
8314 /* Make sure this symbol is output as a dynamic symbol.
8315 Undefined weak syms won't yet be marked as dynamic. */
8316 if (dyn && h->dynindx == -1 && !h->forced_local
8317 && h->root.type == bfd_link_hash_undefweak)
8319 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8323 if (got_type == GOT_UNKNOWN)
8326 else if (got_type == GOT_NORMAL)
8328 h->got.offset = htab->root.sgot->size;
8329 htab->root.sgot->size += GOT_ENTRY_SIZE;
8330 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8331 || h->root.type != bfd_link_hash_undefweak)
8332 && (bfd_link_pic (info)
8333 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8334 /* Undefined weak symbol in static PIE resolves to 0 without
8335 any dynamic relocations. */
8336 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8338 htab->root.srelgot->size += RELOC_SIZE (htab);
8344 if (got_type & GOT_TLSDESC_GD)
8346 eh->tlsdesc_got_jump_table_offset =
8347 (htab->root.sgotplt->size
8348 - aarch64_compute_jump_table_size (htab));
8349 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8350 h->got.offset = (bfd_vma) - 2;
8353 if (got_type & GOT_TLS_GD)
8355 h->got.offset = htab->root.sgot->size;
8356 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8359 if (got_type & GOT_TLS_IE)
8361 h->got.offset = htab->root.sgot->size;
8362 htab->root.sgot->size += GOT_ENTRY_SIZE;
8365 indx = h && h->dynindx != -1 ? h->dynindx : 0;
8366 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8367 || h->root.type != bfd_link_hash_undefweak)
8368 && (!bfd_link_executable (info)
8370 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8372 if (got_type & GOT_TLSDESC_GD)
8374 htab->root.srelplt->size += RELOC_SIZE (htab);
8375 /* Note reloc_count not incremented here! We have
8376 already adjusted reloc_count for this relocation
8379 /* TLSDESC PLT is now needed, but not yet determined. */
8380 htab->tlsdesc_plt = (bfd_vma) - 1;
8383 if (got_type & GOT_TLS_GD)
8384 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8386 if (got_type & GOT_TLS_IE)
8387 htab->root.srelgot->size += RELOC_SIZE (htab);
8393 h->got.offset = (bfd_vma) - 1;
8396 if (eh->dyn_relocs == NULL)
8399 /* In the shared -Bsymbolic case, discard space allocated for
8400 dynamic pc-relative relocs against symbols which turn out to be
8401 defined in regular objects. For the normal shared case, discard
8402 space for pc-relative relocs that have become local due to symbol
8403 visibility changes. */
8405 if (bfd_link_pic (info))
8407 /* Relocs that use pc_count are those that appear on a call
8408 insn, or certain REL relocs that can generated via assembly.
8409 We want calls to protected symbols to resolve directly to the
8410 function rather than going via the plt. If people want
8411 function pointer comparisons to work as expected then they
8412 should avoid writing weird assembly. */
8413 if (SYMBOL_CALLS_LOCAL (info, h))
8415 struct elf_dyn_relocs **pp;
8417 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
8419 p->count -= p->pc_count;
8428 /* Also discard relocs on undefined weak syms with non-default
8430 if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak)
8432 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8433 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8434 eh->dyn_relocs = NULL;
8436 /* Make sure undefined weak symbols are output as a dynamic
8438 else if (h->dynindx == -1
8440 && h->root.type == bfd_link_hash_undefweak
8441 && !bfd_elf_link_record_dynamic_symbol (info, h))
8446 else if (ELIMINATE_COPY_RELOCS)
8448 /* For the non-shared case, discard space for relocs against
8449 symbols which turn out to need copy relocs or are not
8455 || (htab->root.dynamic_sections_created
8456 && (h->root.type == bfd_link_hash_undefweak
8457 || h->root.type == bfd_link_hash_undefined))))
8459 /* Make sure this symbol is output as a dynamic symbol.
8460 Undefined weak syms won't yet be marked as dynamic. */
8461 if (h->dynindx == -1
8463 && h->root.type == bfd_link_hash_undefweak
8464 && !bfd_elf_link_record_dynamic_symbol (info, h))
8467 /* If that succeeded, we know we'll be keeping all the
8469 if (h->dynindx != -1)
8473 eh->dyn_relocs = NULL;
8478 /* Finally, allocate space. */
8479 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8483 sreloc = elf_section_data (p->sec)->sreloc;
8485 BFD_ASSERT (sreloc != NULL);
8487 sreloc->size += p->count * RELOC_SIZE (htab);
8493 /* Allocate space in .plt, .got and associated reloc sections for
8494 ifunc dynamic relocs. */
8497 elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
8500 struct bfd_link_info *info;
8501 struct elf_aarch64_link_hash_table *htab;
8502 struct elf_aarch64_link_hash_entry *eh;
8504 /* An example of a bfd_link_hash_indirect symbol is versioned
8505 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8506 -> __gxx_personality_v0(bfd_link_hash_defined)
8508 There is no need to process bfd_link_hash_indirect symbols here
8509 because we will also be presented with the concrete instance of
8510 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8511 called to copy all relevant data from the generic to the concrete
8513 if (h->root.type == bfd_link_hash_indirect)
8516 if (h->root.type == bfd_link_hash_warning)
8517 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8519 info = (struct bfd_link_info *) inf;
8520 htab = elf_aarch64_hash_table (info);
8522 eh = (struct elf_aarch64_link_hash_entry *) h;
8524 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8525 here if it is defined and referenced in a non-shared object. */
8526 if (h->type == STT_GNU_IFUNC
8528 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
8531 htab->plt_entry_size,
8532 htab->plt_header_size,
8538 /* Allocate space in .plt, .got and associated reloc sections for
8539 local dynamic relocs. */
8542 elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf)
8544 struct elf_link_hash_entry *h
8545 = (struct elf_link_hash_entry *) *slot;
8547 if (h->type != STT_GNU_IFUNC
8551 || h->root.type != bfd_link_hash_defined)
8554 return elfNN_aarch64_allocate_dynrelocs (h, inf);
8557 /* Allocate space in .plt, .got and associated reloc sections for
8558 local ifunc dynamic relocs. */
8561 elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
8563 struct elf_link_hash_entry *h
8564 = (struct elf_link_hash_entry *) *slot;
8566 if (h->type != STT_GNU_IFUNC
8570 || h->root.type != bfd_link_hash_defined)
8573 return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
8576 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
8577 read-only sections. */
8580 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
8584 if (h->root.type == bfd_link_hash_indirect)
8587 sec = readonly_dynrelocs (h);
8590 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
8592 info->flags |= DF_TEXTREL;
8593 info->callbacks->minfo
8594 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
8595 sec->owner, h->root.root.string, sec);
8597 /* Not an error, just cut short the traversal. */
8603 /* This is the most important function of all . Innocuosly named
8607 elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8608 struct bfd_link_info *info)
8610 struct elf_aarch64_link_hash_table *htab;
8616 htab = elf_aarch64_hash_table ((info));
8617 dynobj = htab->root.dynobj;
8619 BFD_ASSERT (dynobj != NULL);
8621 if (htab->root.dynamic_sections_created)
8623 if (bfd_link_executable (info) && !info->nointerp)
8625 s = bfd_get_linker_section (dynobj, ".interp");
8628 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8629 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8633 /* Set up .got offsets for local syms, and space for local dynamic
8635 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8637 struct elf_aarch64_local_symbol *locals = NULL;
8638 Elf_Internal_Shdr *symtab_hdr;
8642 if (!is_aarch64_elf (ibfd))
8645 for (s = ibfd->sections; s != NULL; s = s->next)
8647 struct elf_dyn_relocs *p;
8649 for (p = (struct elf_dyn_relocs *)
8650 (elf_section_data (s)->local_dynrel); p != NULL; p = p->next)
8652 if (!bfd_is_abs_section (p->sec)
8653 && bfd_is_abs_section (p->sec->output_section))
8655 /* Input section has been discarded, either because
8656 it is a copy of a linkonce section or due to
8657 linker script /DISCARD/, so we'll be discarding
8660 else if (p->count != 0)
8662 srel = elf_section_data (p->sec)->sreloc;
8663 srel->size += p->count * RELOC_SIZE (htab);
8664 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8665 info->flags |= DF_TEXTREL;
8670 locals = elf_aarch64_locals (ibfd);
8674 symtab_hdr = &elf_symtab_hdr (ibfd);
8675 srel = htab->root.srelgot;
8676 for (i = 0; i < symtab_hdr->sh_info; i++)
8678 locals[i].got_offset = (bfd_vma) - 1;
8679 locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8680 if (locals[i].got_refcount > 0)
8682 unsigned got_type = locals[i].got_type;
8683 if (got_type & GOT_TLSDESC_GD)
8685 locals[i].tlsdesc_got_jump_table_offset =
8686 (htab->root.sgotplt->size
8687 - aarch64_compute_jump_table_size (htab));
8688 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8689 locals[i].got_offset = (bfd_vma) - 2;
8692 if (got_type & GOT_TLS_GD)
8694 locals[i].got_offset = htab->root.sgot->size;
8695 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8698 if (got_type & GOT_TLS_IE
8699 || got_type & GOT_NORMAL)
8701 locals[i].got_offset = htab->root.sgot->size;
8702 htab->root.sgot->size += GOT_ENTRY_SIZE;
8705 if (got_type == GOT_UNKNOWN)
8709 if (bfd_link_pic (info))
8711 if (got_type & GOT_TLSDESC_GD)
8713 htab->root.srelplt->size += RELOC_SIZE (htab);
8714 /* Note RELOC_COUNT not incremented here! */
8715 htab->tlsdesc_plt = (bfd_vma) - 1;
8718 if (got_type & GOT_TLS_GD)
8719 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8721 if (got_type & GOT_TLS_IE
8722 || got_type & GOT_NORMAL)
8723 htab->root.srelgot->size += RELOC_SIZE (htab);
8728 locals[i].got_refcount = (bfd_vma) - 1;
8734 /* Allocate global sym .plt and .got entries, and space for global
8735 sym dynamic relocs. */
8736 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
8739 /* Allocate global ifunc sym .plt and .got entries, and space for global
8740 ifunc sym dynamic relocs. */
8741 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
8744 /* Allocate .plt and .got entries, and space for local symbols. */
8745 htab_traverse (htab->loc_hash_table,
8746 elfNN_aarch64_allocate_local_dynrelocs,
8749 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8750 htab_traverse (htab->loc_hash_table,
8751 elfNN_aarch64_allocate_local_ifunc_dynrelocs,
8754 /* For every jump slot reserved in the sgotplt, reloc_count is
8755 incremented. However, when we reserve space for TLS descriptors,
8756 it's not incremented, so in order to compute the space reserved
8757 for them, it suffices to multiply the reloc count by the jump
8760 if (htab->root.srelplt)
8761 htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
8763 if (htab->tlsdesc_plt)
8765 if (htab->root.splt->size == 0)
8766 htab->root.splt->size += PLT_ENTRY_SIZE;
8768 htab->tlsdesc_plt = htab->root.splt->size;
8769 htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE;
8771 /* If we're not using lazy TLS relocations, don't generate the
8772 GOT entry required. */
8773 if (!(info->flags & DF_BIND_NOW))
8775 htab->dt_tlsdesc_got = htab->root.sgot->size;
8776 htab->root.sgot->size += GOT_ENTRY_SIZE;
8780 /* Init mapping symbols information to use later to distingush between
8781 code and data while scanning for errata. */
8782 if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
8783 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8785 if (!is_aarch64_elf (ibfd))
8787 bfd_elfNN_aarch64_init_maps (ibfd);
8790 /* We now have determined the sizes of the various dynamic sections.
8791 Allocate memory for them. */
8793 for (s = dynobj->sections; s != NULL; s = s->next)
8795 if ((s->flags & SEC_LINKER_CREATED) == 0)
8798 if (s == htab->root.splt
8799 || s == htab->root.sgot
8800 || s == htab->root.sgotplt
8801 || s == htab->root.iplt
8802 || s == htab->root.igotplt
8803 || s == htab->root.sdynbss
8804 || s == htab->root.sdynrelro)
8806 /* Strip this section if we don't need it; see the
8809 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
8811 if (s->size != 0 && s != htab->root.srelplt)
8814 /* We use the reloc_count field as a counter if we need
8815 to copy relocs into the output file. */
8816 if (s != htab->root.srelplt)
8821 /* It's not one of our sections, so don't allocate space. */
8827 /* If we don't need this section, strip it from the
8828 output file. This is mostly to handle .rela.bss and
8829 .rela.plt. We must create both sections in
8830 create_dynamic_sections, because they must be created
8831 before the linker maps input sections to output
8832 sections. The linker does that before
8833 adjust_dynamic_symbol is called, and it is that
8834 function which decides whether anything needs to go
8835 into these sections. */
8836 s->flags |= SEC_EXCLUDE;
8840 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8843 /* Allocate memory for the section contents. We use bfd_zalloc
8844 here in case unused entries are not reclaimed before the
8845 section's contents are written out. This should not happen,
8846 but this way if it does, we get a R_AARCH64_NONE reloc instead
8848 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
8849 if (s->contents == NULL)
8853 if (htab->root.dynamic_sections_created)
8855 /* Add some entries to the .dynamic section. We fill in the
8856 values later, in elfNN_aarch64_finish_dynamic_sections, but we
8857 must add the entries now so that we get the correct size for
8858 the .dynamic section. The DT_DEBUG entry is filled in by the
8859 dynamic linker and used by the debugger. */
8860 #define add_dynamic_entry(TAG, VAL) \
8861 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8863 if (bfd_link_executable (info))
8865 if (!add_dynamic_entry (DT_DEBUG, 0))
8869 if (htab->root.splt->size != 0)
8871 if (!add_dynamic_entry (DT_PLTGOT, 0)
8872 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8873 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8874 || !add_dynamic_entry (DT_JMPREL, 0))
8877 if (htab->tlsdesc_plt
8878 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
8879 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
8885 if (!add_dynamic_entry (DT_RELA, 0)
8886 || !add_dynamic_entry (DT_RELASZ, 0)
8887 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8890 /* If any dynamic relocs apply to a read-only section,
8891 then we need a DT_TEXTREL entry. */
8892 if ((info->flags & DF_TEXTREL) == 0)
8893 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info);
8895 if ((info->flags & DF_TEXTREL) != 0)
8897 if (!add_dynamic_entry (DT_TEXTREL, 0))
8902 #undef add_dynamic_entry
8908 elf_aarch64_update_plt_entry (bfd *output_bfd,
8909 bfd_reloc_code_real_type r_type,
8910 bfd_byte *plt_entry, bfd_vma value)
8912 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
8914 /* FIXME: We should check the return value from this function call. */
8915 (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
8919 elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
8920 struct elf_aarch64_link_hash_table
8921 *htab, bfd *output_bfd,
8922 struct bfd_link_info *info)
8924 bfd_byte *plt_entry;
8927 bfd_vma gotplt_entry_address;
8928 bfd_vma plt_entry_address;
8929 Elf_Internal_Rela rela;
8931 asection *plt, *gotplt, *relplt;
8933 /* When building a static executable, use .iplt, .igot.plt and
8934 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8935 if (htab->root.splt != NULL)
8937 plt = htab->root.splt;
8938 gotplt = htab->root.sgotplt;
8939 relplt = htab->root.srelplt;
8943 plt = htab->root.iplt;
8944 gotplt = htab->root.igotplt;
8945 relplt = htab->root.irelplt;
8948 /* Get the index in the procedure linkage table which
8949 corresponds to this symbol. This is the index of this symbol
8950 in all the symbols for which we are making plt entries. The
8951 first entry in the procedure linkage table is reserved.
8953 Get the offset into the .got table of the entry that
8954 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
8955 bytes. The first three are reserved for the dynamic linker.
8957 For static executables, we don't reserve anything. */
8959 if (plt == htab->root.splt)
8961 plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
8962 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
8966 plt_index = h->plt.offset / htab->plt_entry_size;
8967 got_offset = plt_index * GOT_ENTRY_SIZE;
8970 plt_entry = plt->contents + h->plt.offset;
8971 plt_entry_address = plt->output_section->vma
8972 + plt->output_offset + h->plt.offset;
8973 gotplt_entry_address = gotplt->output_section->vma +
8974 gotplt->output_offset + got_offset;
8976 /* Copy in the boiler-plate for the PLTn entry. */
8977 memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE);
8979 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
8980 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
8981 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
8983 PG (gotplt_entry_address) -
8984 PG (plt_entry_address));
8986 /* Fill in the lo12 bits for the load from the pltgot. */
8987 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
8989 PG_OFFSET (gotplt_entry_address));
8991 /* Fill in the lo12 bits for the add from the pltgot entry. */
8992 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
8994 PG_OFFSET (gotplt_entry_address));
8996 /* All the GOTPLT Entries are essentially initialized to PLT0. */
8997 bfd_put_NN (output_bfd,
8998 plt->output_section->vma + plt->output_offset,
8999 gotplt->contents + got_offset);
9001 rela.r_offset = gotplt_entry_address;
9003 if (h->dynindx == -1
9004 || ((bfd_link_executable (info)
9005 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9007 && h->type == STT_GNU_IFUNC))
9009 /* If an STT_GNU_IFUNC symbol is locally defined, generate
9010 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
9011 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
9012 rela.r_addend = (h->root.u.def.value
9013 + h->root.u.def.section->output_section->vma
9014 + h->root.u.def.section->output_offset);
9018 /* Fill in the entry in the .rela.plt section. */
9019 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
9023 /* Compute the relocation entry to used based on PLT index and do
9024 not adjust reloc_count. The reloc_count has already been adjusted
9025 to account for this entry. */
9026 loc = relplt->contents + plt_index * RELOC_SIZE (htab);
9027 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
9030 /* Size sections even though they're not dynamic. We use it to setup
9031 _TLS_MODULE_BASE_, if needed. */
9034 elfNN_aarch64_always_size_sections (bfd *output_bfd,
9035 struct bfd_link_info *info)
9039 if (bfd_link_relocatable (info))
9042 tls_sec = elf_hash_table (info)->tls_sec;
9046 struct elf_link_hash_entry *tlsbase;
9048 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
9049 "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
9053 struct bfd_link_hash_entry *h = NULL;
9054 const struct elf_backend_data *bed =
9055 get_elf_backend_data (output_bfd);
9057 if (!(_bfd_generic_link_add_one_symbol
9058 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
9059 tls_sec, 0, NULL, FALSE, bed->collect, &h)))
9062 tlsbase->type = STT_TLS;
9063 tlsbase = (struct elf_link_hash_entry *) h;
9064 tlsbase->def_regular = 1;
9065 tlsbase->other = STV_HIDDEN;
9066 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
9073 /* Finish up dynamic symbol handling. We set the contents of various
9074 dynamic sections here. */
9077 elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd,
9078 struct bfd_link_info *info,
9079 struct elf_link_hash_entry *h,
9080 Elf_Internal_Sym *sym)
9082 struct elf_aarch64_link_hash_table *htab;
9083 htab = elf_aarch64_hash_table (info);
9085 if (h->plt.offset != (bfd_vma) - 1)
9087 asection *plt, *gotplt, *relplt;
9089 /* This symbol has an entry in the procedure linkage table. Set
9092 /* When building a static executable, use .iplt, .igot.plt and
9093 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9094 if (htab->root.splt != NULL)
9096 plt = htab->root.splt;
9097 gotplt = htab->root.sgotplt;
9098 relplt = htab->root.srelplt;
9102 plt = htab->root.iplt;
9103 gotplt = htab->root.igotplt;
9104 relplt = htab->root.irelplt;
9107 /* This symbol has an entry in the procedure linkage table. Set
9109 if ((h->dynindx == -1
9110 && !((h->forced_local || bfd_link_executable (info))
9112 && h->type == STT_GNU_IFUNC))
9118 elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
9119 if (!h->def_regular)
9121 /* Mark the symbol as undefined, rather than as defined in
9122 the .plt section. */
9123 sym->st_shndx = SHN_UNDEF;
9124 /* If the symbol is weak we need to clear the value.
9125 Otherwise, the PLT entry would provide a definition for
9126 the symbol even if the symbol wasn't defined anywhere,
9127 and so the symbol would never be NULL. Leave the value if
9128 there were any relocations where pointer equality matters
9129 (this is a clue for the dynamic linker, to make function
9130 pointer comparisons work between an application and shared
9132 if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
9137 if (h->got.offset != (bfd_vma) - 1
9138 && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL
9139 /* Undefined weak symbol in static PIE resolves to 0 without
9140 any dynamic relocations. */
9141 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
9143 Elf_Internal_Rela rela;
9146 /* This symbol has an entry in the global offset table. Set it
9148 if (htab->root.sgot == NULL || htab->root.srelgot == NULL)
9151 rela.r_offset = (htab->root.sgot->output_section->vma
9152 + htab->root.sgot->output_offset
9153 + (h->got.offset & ~(bfd_vma) 1));
9156 && h->type == STT_GNU_IFUNC)
9158 if (bfd_link_pic (info))
9160 /* Generate R_AARCH64_GLOB_DAT. */
9167 if (!h->pointer_equality_needed)
9170 /* For non-shared object, we can't use .got.plt, which
9171 contains the real function address if we need pointer
9172 equality. We load the GOT entry with the PLT entry. */
9173 plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
9174 bfd_put_NN (output_bfd, (plt->output_section->vma
9175 + plt->output_offset
9177 htab->root.sgot->contents
9178 + (h->got.offset & ~(bfd_vma) 1));
9182 else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
9184 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
9187 BFD_ASSERT ((h->got.offset & 1) != 0);
9188 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
9189 rela.r_addend = (h->root.u.def.value
9190 + h->root.u.def.section->output_section->vma
9191 + h->root.u.def.section->output_offset);
9196 BFD_ASSERT ((h->got.offset & 1) == 0);
9197 bfd_put_NN (output_bfd, (bfd_vma) 0,
9198 htab->root.sgot->contents + h->got.offset);
9199 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT));
9203 loc = htab->root.srelgot->contents;
9204 loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab);
9205 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
9210 Elf_Internal_Rela rela;
9214 /* This symbol needs a copy reloc. Set it up. */
9215 if (h->dynindx == -1
9216 || (h->root.type != bfd_link_hash_defined
9217 && h->root.type != bfd_link_hash_defweak)
9218 || htab->root.srelbss == NULL)
9221 rela.r_offset = (h->root.u.def.value
9222 + h->root.u.def.section->output_section->vma
9223 + h->root.u.def.section->output_offset);
9224 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY));
9226 if (h->root.u.def.section == htab->root.sdynrelro)
9227 s = htab->root.sreldynrelro;
9229 s = htab->root.srelbss;
9230 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
9231 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
9234 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9235 be NULL for local symbols. */
9237 && (h == elf_hash_table (info)->hdynamic
9238 || h == elf_hash_table (info)->hgot))
9239 sym->st_shndx = SHN_ABS;
9244 /* Finish up local dynamic symbol handling. We set the contents of
9245 various dynamic sections here. */
9248 elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
9250 struct elf_link_hash_entry *h
9251 = (struct elf_link_hash_entry *) *slot;
9252 struct bfd_link_info *info
9253 = (struct bfd_link_info *) inf;
9255 return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
9260 elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
9261 struct elf_aarch64_link_hash_table
9264 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9265 small and large plts and at the minute just generates
9268 /* PLT0 of the small PLT looks like this in ELF64 -
9269 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9270 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9271 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9273 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9274 // GOTPLT entry for this.
9276 PLT0 will be slightly different in ELF32 due to different got entry
9278 bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
9282 memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry,
9284 elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize =
9287 plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma
9288 + htab->root.sgotplt->output_offset
9289 + GOT_ENTRY_SIZE * 2);
9291 plt_base = htab->root.splt->output_section->vma +
9292 htab->root.splt->output_offset;
9294 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9295 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9296 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9297 htab->root.splt->contents + 4,
9298 PG (plt_got_2nd_ent) - PG (plt_base + 4));
9300 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
9301 htab->root.splt->contents + 8,
9302 PG_OFFSET (plt_got_2nd_ent));
9304 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
9305 htab->root.splt->contents + 12,
9306 PG_OFFSET (plt_got_2nd_ent));
9310 elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
9311 struct bfd_link_info *info)
9313 struct elf_aarch64_link_hash_table *htab;
9317 htab = elf_aarch64_hash_table (info);
9318 dynobj = htab->root.dynobj;
9319 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9321 if (htab->root.dynamic_sections_created)
9323 ElfNN_External_Dyn *dyncon, *dynconend;
9325 if (sdyn == NULL || htab->root.sgot == NULL)
9328 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
9329 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
9330 for (; dyncon < dynconend; dyncon++)
9332 Elf_Internal_Dyn dyn;
9335 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
9343 s = htab->root.sgotplt;
9344 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9348 s = htab->root.srelplt;
9349 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9353 s = htab->root.srelplt;
9354 dyn.d_un.d_val = s->size;
9357 case DT_TLSDESC_PLT:
9358 s = htab->root.splt;
9359 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9360 + htab->tlsdesc_plt;
9363 case DT_TLSDESC_GOT:
9364 s = htab->root.sgot;
9365 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9366 + htab->dt_tlsdesc_got;
9370 bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon);
9375 /* Fill in the special first entry in the procedure linkage table. */
9376 if (htab->root.splt && htab->root.splt->size > 0)
9378 elfNN_aarch64_init_small_plt0_entry (output_bfd, htab);
9380 elf_section_data (htab->root.splt->output_section)->
9381 this_hdr.sh_entsize = htab->plt_entry_size;
9384 if (htab->tlsdesc_plt)
9386 bfd_put_NN (output_bfd, (bfd_vma) 0,
9387 htab->root.sgot->contents + htab->dt_tlsdesc_got);
9389 memcpy (htab->root.splt->contents + htab->tlsdesc_plt,
9390 elfNN_aarch64_tlsdesc_small_plt_entry,
9391 sizeof (elfNN_aarch64_tlsdesc_small_plt_entry));
9394 bfd_vma adrp1_addr =
9395 htab->root.splt->output_section->vma
9396 + htab->root.splt->output_offset + htab->tlsdesc_plt + 4;
9398 bfd_vma adrp2_addr = adrp1_addr + 4;
9401 htab->root.sgot->output_section->vma
9402 + htab->root.sgot->output_offset;
9404 bfd_vma pltgot_addr =
9405 htab->root.sgotplt->output_section->vma
9406 + htab->root.sgotplt->output_offset;
9408 bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got;
9410 bfd_byte *plt_entry =
9411 htab->root.splt->contents + htab->tlsdesc_plt;
9413 /* adrp x2, DT_TLSDESC_GOT */
9414 elf_aarch64_update_plt_entry (output_bfd,
9415 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9417 (PG (dt_tlsdesc_got)
9418 - PG (adrp1_addr)));
9421 elf_aarch64_update_plt_entry (output_bfd,
9422 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9425 - PG (adrp2_addr)));
9427 /* ldr x2, [x2, #0] */
9428 elf_aarch64_update_plt_entry (output_bfd,
9429 BFD_RELOC_AARCH64_LDSTNN_LO12,
9431 PG_OFFSET (dt_tlsdesc_got));
9434 elf_aarch64_update_plt_entry (output_bfd,
9435 BFD_RELOC_AARCH64_ADD_LO12,
9437 PG_OFFSET (pltgot_addr));
9442 if (htab->root.sgotplt)
9444 if (bfd_is_abs_section (htab->root.sgotplt->output_section))
9447 (_("discarded output section: `%pA'"), htab->root.sgotplt);
9451 /* Fill in the first three entries in the global offset table. */
9452 if (htab->root.sgotplt->size > 0)
9454 bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
9456 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
9457 bfd_put_NN (output_bfd,
9459 htab->root.sgotplt->contents + GOT_ENTRY_SIZE);
9460 bfd_put_NN (output_bfd,
9462 htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
9465 if (htab->root.sgot)
9467 if (htab->root.sgot->size > 0)
9470 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
9471 bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
9475 elf_section_data (htab->root.sgotplt->output_section)->
9476 this_hdr.sh_entsize = GOT_ENTRY_SIZE;
9479 if (htab->root.sgot && htab->root.sgot->size > 0)
9480 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
9483 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9484 htab_traverse (htab->loc_hash_table,
9485 elfNN_aarch64_finish_local_dynamic_symbol,
9491 /* Return address for Ith PLT stub in section PLT, for relocation REL
9492 or (bfd_vma) -1 if it should not be included. */
9495 elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt,
9496 const arelent *rel ATTRIBUTE_UNUSED)
9498 return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE;
9501 /* Returns TRUE if NAME is an AArch64 mapping symbol.
9502 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9503 It also allows a period initiated suffix to be added to the symbol, ie:
9504 "$[adtx]\.[:sym_char]+". */
9507 is_aarch64_mapping_symbol (const char * name)
9509 return name != NULL /* Paranoia. */
9510 && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9511 the mapping symbols could have acquired a prefix.
9512 We do not support this here, since such symbols no
9513 longer conform to the ARM ELF ABI. */
9514 && (name[1] == 'd' || name[1] == 'x')
9515 && (name[2] == 0 || name[2] == '.');
9516 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9517 any characters that follow the period are legal characters for the body
9518 of a symbol's name. For now we just assume that this is the case. */
9521 /* Make sure that mapping symbols in object files are not removed via the
9522 "strip --strip-unneeded" tool. These symbols might needed in order to
9523 correctly generate linked files. Once an object file has been linked,
9524 it should be safe to remove them. */
9527 elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym)
9529 if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
9530 && sym->section != bfd_abs_section_ptr
9531 && is_aarch64_mapping_symbol (sym->name))
9532 sym->flags |= BSF_KEEP;
9536 /* We use this so we can override certain functions
9537 (though currently we don't). */
9539 const struct elf_size_info elfNN_aarch64_size_info =
9541 sizeof (ElfNN_External_Ehdr),
9542 sizeof (ElfNN_External_Phdr),
9543 sizeof (ElfNN_External_Shdr),
9544 sizeof (ElfNN_External_Rel),
9545 sizeof (ElfNN_External_Rela),
9546 sizeof (ElfNN_External_Sym),
9547 sizeof (ElfNN_External_Dyn),
9548 sizeof (Elf_External_Note),
9549 4, /* Hash table entry size. */
9550 1, /* Internal relocs per external relocs. */
9551 ARCH_SIZE, /* Arch size. */
9552 LOG_FILE_ALIGN, /* Log_file_align. */
9553 ELFCLASSNN, EV_CURRENT,
9554 bfd_elfNN_write_out_phdrs,
9555 bfd_elfNN_write_shdrs_and_ehdr,
9556 bfd_elfNN_checksum_contents,
9557 bfd_elfNN_write_relocs,
9558 bfd_elfNN_swap_symbol_in,
9559 bfd_elfNN_swap_symbol_out,
9560 bfd_elfNN_slurp_reloc_table,
9561 bfd_elfNN_slurp_symbol_table,
9562 bfd_elfNN_swap_dyn_in,
9563 bfd_elfNN_swap_dyn_out,
9564 bfd_elfNN_swap_reloc_in,
9565 bfd_elfNN_swap_reloc_out,
9566 bfd_elfNN_swap_reloca_in,
9567 bfd_elfNN_swap_reloca_out
9570 #define ELF_ARCH bfd_arch_aarch64
9571 #define ELF_MACHINE_CODE EM_AARCH64
9572 #define ELF_MAXPAGESIZE 0x10000
9573 #define ELF_MINPAGESIZE 0x1000
9574 #define ELF_COMMONPAGESIZE 0x1000
9576 #define bfd_elfNN_close_and_cleanup \
9577 elfNN_aarch64_close_and_cleanup
9579 #define bfd_elfNN_bfd_free_cached_info \
9580 elfNN_aarch64_bfd_free_cached_info
9582 #define bfd_elfNN_bfd_is_target_special_symbol \
9583 elfNN_aarch64_is_target_special_symbol
9585 #define bfd_elfNN_bfd_link_hash_table_create \
9586 elfNN_aarch64_link_hash_table_create
9588 #define bfd_elfNN_bfd_merge_private_bfd_data \
9589 elfNN_aarch64_merge_private_bfd_data
9591 #define bfd_elfNN_bfd_print_private_bfd_data \
9592 elfNN_aarch64_print_private_bfd_data
9594 #define bfd_elfNN_bfd_reloc_type_lookup \
9595 elfNN_aarch64_reloc_type_lookup
9597 #define bfd_elfNN_bfd_reloc_name_lookup \
9598 elfNN_aarch64_reloc_name_lookup
9600 #define bfd_elfNN_bfd_set_private_flags \
9601 elfNN_aarch64_set_private_flags
9603 #define bfd_elfNN_find_inliner_info \
9604 elfNN_aarch64_find_inliner_info
9606 #define bfd_elfNN_find_nearest_line \
9607 elfNN_aarch64_find_nearest_line
9609 #define bfd_elfNN_mkobject \
9610 elfNN_aarch64_mkobject
9612 #define bfd_elfNN_new_section_hook \
9613 elfNN_aarch64_new_section_hook
9615 #define elf_backend_adjust_dynamic_symbol \
9616 elfNN_aarch64_adjust_dynamic_symbol
9618 #define elf_backend_always_size_sections \
9619 elfNN_aarch64_always_size_sections
9621 #define elf_backend_check_relocs \
9622 elfNN_aarch64_check_relocs
9624 #define elf_backend_copy_indirect_symbol \
9625 elfNN_aarch64_copy_indirect_symbol
9627 /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
9628 to them in our hash. */
9629 #define elf_backend_create_dynamic_sections \
9630 elfNN_aarch64_create_dynamic_sections
9632 #define elf_backend_init_index_section \
9633 _bfd_elf_init_2_index_sections
9635 #define elf_backend_finish_dynamic_sections \
9636 elfNN_aarch64_finish_dynamic_sections
9638 #define elf_backend_finish_dynamic_symbol \
9639 elfNN_aarch64_finish_dynamic_symbol
9641 #define elf_backend_object_p \
9642 elfNN_aarch64_object_p
9644 #define elf_backend_output_arch_local_syms \
9645 elfNN_aarch64_output_arch_local_syms
9647 #define elf_backend_plt_sym_val \
9648 elfNN_aarch64_plt_sym_val
9650 #define elf_backend_post_process_headers \
9651 elfNN_aarch64_post_process_headers
9653 #define elf_backend_relocate_section \
9654 elfNN_aarch64_relocate_section
9656 #define elf_backend_reloc_type_class \
9657 elfNN_aarch64_reloc_type_class
9659 #define elf_backend_section_from_shdr \
9660 elfNN_aarch64_section_from_shdr
9662 #define elf_backend_size_dynamic_sections \
9663 elfNN_aarch64_size_dynamic_sections
9665 #define elf_backend_size_info \
9666 elfNN_aarch64_size_info
9668 #define elf_backend_write_section \
9669 elfNN_aarch64_write_section
9671 #define elf_backend_symbol_processing \
9672 elfNN_aarch64_backend_symbol_processing
9674 #define elf_backend_can_refcount 1
9675 #define elf_backend_can_gc_sections 1
9676 #define elf_backend_plt_readonly 1
9677 #define elf_backend_want_got_plt 1
9678 #define elf_backend_want_plt_sym 0
9679 #define elf_backend_want_dynrelro 1
9680 #define elf_backend_may_use_rel_p 0
9681 #define elf_backend_may_use_rela_p 1
9682 #define elf_backend_default_use_rela_p 1
9683 #define elf_backend_rela_normal 1
9684 #define elf_backend_dtrel_excludes_plt 1
9685 #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
9686 #define elf_backend_default_execstack 0
9687 #define elf_backend_extern_protected_data 1
9688 #define elf_backend_hash_symbol elf_aarch64_hash_symbol
9690 #undef elf_backend_obj_attrs_section
9691 #define elf_backend_obj_attrs_section ".ARM.attributes"
9693 #include "elfNN-target.h"
9695 /* CloudABI support. */
9697 #undef TARGET_LITTLE_SYM
9698 #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
9699 #undef TARGET_LITTLE_NAME
9700 #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
9701 #undef TARGET_BIG_SYM
9702 #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
9703 #undef TARGET_BIG_NAME
9704 #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
9707 #define ELF_OSABI ELFOSABI_CLOUDABI
9710 #define elfNN_bed elfNN_aarch64_cloudabi_bed
9712 #include "elfNN-target.h"
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