1 /* AArch64-specific support for NN-bit ELF.
2 Copyright (C) 2009-2016 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
160 #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME
161 #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME
162 #define HOWTO64(...) EMPTY_HOWTO (0)
163 #define HOWTO32(...) HOWTO (__VA_ARGS__)
164 #define LOG_FILE_ALIGN 2
167 #define IS_AARCH64_TLS_RELOC(R_TYPE) \
168 ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
169 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
170 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
171 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
172 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
173 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
174 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
175 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
176 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
177 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
178 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
179 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
180 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
181 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
182 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
183 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
184 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
185 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \
186 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \
187 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \
188 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \
189 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \
190 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \
191 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \
192 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \
193 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \
194 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \
195 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \
196 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \
197 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \
198 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
199 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
200 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
201 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \
202 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \
203 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \
204 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \
205 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \
206 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \
207 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \
208 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \
209 || IS_AARCH64_TLSDESC_RELOC ((R_TYPE)))
211 #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
212 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
213 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \
214 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
215 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
216 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
217 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
218 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \
219 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
220 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
221 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
222 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
223 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
224 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
225 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
226 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
227 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
228 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
229 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
230 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \
231 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
232 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
233 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21)
235 #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
236 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \
237 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
238 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \
239 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
240 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
241 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
242 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
243 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \
244 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
245 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
246 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
247 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1)
249 #define ELIMINATE_COPY_RELOCS 0
251 /* Return size of a relocation entry. HTAB is the bfd's
252 elf_aarch64_link_hash_entry. */
253 #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela))
255 /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */
256 #define GOT_ENTRY_SIZE (ARCH_SIZE / 8)
257 #define PLT_ENTRY_SIZE (32)
258 #define PLT_SMALL_ENTRY_SIZE (16)
259 #define PLT_TLSDESC_ENTRY_SIZE (32)
261 /* Encoding of the nop instruction */
262 #define INSN_NOP 0xd503201f
264 #define aarch64_compute_jump_table_size(htab) \
265 (((htab)->root.srelplt == NULL) ? 0 \
266 : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE)
268 /* The first entry in a procedure linkage table looks like this
269 if the distance between the PLTGOT and the PLT is < 4GB use
270 these PLT entries. Note that the dynamic linker gets &PLTGOT[2]
271 in x16 and needs to work out PLTGOT[1] by using an address of
272 [x16,#-GOT_ENTRY_SIZE]. */
273 static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] =
275 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
276 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
278 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
279 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
281 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
282 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
284 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
285 0x1f, 0x20, 0x03, 0xd5, /* nop */
286 0x1f, 0x20, 0x03, 0xd5, /* nop */
287 0x1f, 0x20, 0x03, 0xd5, /* nop */
290 /* Per function entry in a procedure linkage table looks like this
291 if the distance between the PLTGOT and the PLT is < 4GB use
292 these PLT entries. */
293 static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] =
295 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
297 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
298 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
300 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
301 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
303 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
306 static const bfd_byte
307 elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] =
309 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
310 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
311 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
313 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
314 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
316 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
317 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
319 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
320 0x1f, 0x20, 0x03, 0xd5, /* nop */
321 0x1f, 0x20, 0x03, 0xd5, /* nop */
324 #define elf_info_to_howto elfNN_aarch64_info_to_howto
325 #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto
327 #define AARCH64_ELF_ABI_VERSION 0
329 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
330 #define ALL_ONES (~ (bfd_vma) 0)
332 /* Indexed by the bfd interal reloc enumerators.
333 Therefore, the table needs to be synced with BFD_RELOC_AARCH64_*
336 static reloc_howto_type elfNN_aarch64_howto_table[] =
340 /* Basic data relocations. */
343 HOWTO (R_AARCH64_NULL, /* type */
345 3, /* size (0 = byte, 1 = short, 2 = long) */
347 FALSE, /* pc_relative */
349 complain_overflow_dont, /* complain_on_overflow */
350 bfd_elf_generic_reloc, /* special_function */
351 "R_AARCH64_NULL", /* name */
352 FALSE, /* partial_inplace */
355 FALSE), /* pcrel_offset */
357 HOWTO (R_AARCH64_NONE, /* type */
359 3, /* size (0 = byte, 1 = short, 2 = long) */
361 FALSE, /* pc_relative */
363 complain_overflow_dont, /* complain_on_overflow */
364 bfd_elf_generic_reloc, /* special_function */
365 "R_AARCH64_NONE", /* name */
366 FALSE, /* partial_inplace */
369 FALSE), /* pcrel_offset */
373 HOWTO64 (AARCH64_R (ABS64), /* type */
375 4, /* size (4 = long long) */
377 FALSE, /* pc_relative */
379 complain_overflow_unsigned, /* complain_on_overflow */
380 bfd_elf_generic_reloc, /* special_function */
381 AARCH64_R_STR (ABS64), /* name */
382 FALSE, /* partial_inplace */
383 ALL_ONES, /* src_mask */
384 ALL_ONES, /* dst_mask */
385 FALSE), /* pcrel_offset */
388 HOWTO (AARCH64_R (ABS32), /* type */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
392 FALSE, /* pc_relative */
394 complain_overflow_unsigned, /* complain_on_overflow */
395 bfd_elf_generic_reloc, /* special_function */
396 AARCH64_R_STR (ABS32), /* name */
397 FALSE, /* partial_inplace */
398 0xffffffff, /* src_mask */
399 0xffffffff, /* dst_mask */
400 FALSE), /* pcrel_offset */
403 HOWTO (AARCH64_R (ABS16), /* type */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
407 FALSE, /* pc_relative */
409 complain_overflow_unsigned, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* special_function */
411 AARCH64_R_STR (ABS16), /* name */
412 FALSE, /* partial_inplace */
413 0xffff, /* src_mask */
414 0xffff, /* dst_mask */
415 FALSE), /* pcrel_offset */
417 /* .xword: (S+A-P) */
418 HOWTO64 (AARCH64_R (PREL64), /* type */
420 4, /* size (4 = long long) */
422 TRUE, /* pc_relative */
424 complain_overflow_signed, /* complain_on_overflow */
425 bfd_elf_generic_reloc, /* special_function */
426 AARCH64_R_STR (PREL64), /* name */
427 FALSE, /* partial_inplace */
428 ALL_ONES, /* src_mask */
429 ALL_ONES, /* dst_mask */
430 TRUE), /* pcrel_offset */
433 HOWTO (AARCH64_R (PREL32), /* type */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
437 TRUE, /* pc_relative */
439 complain_overflow_signed, /* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 AARCH64_R_STR (PREL32), /* name */
442 FALSE, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE), /* pcrel_offset */
448 HOWTO (AARCH64_R (PREL16), /* type */
450 1, /* size (0 = byte, 1 = short, 2 = long) */
452 TRUE, /* pc_relative */
454 complain_overflow_signed, /* complain_on_overflow */
455 bfd_elf_generic_reloc, /* special_function */
456 AARCH64_R_STR (PREL16), /* name */
457 FALSE, /* partial_inplace */
458 0xffff, /* src_mask */
459 0xffff, /* dst_mask */
460 TRUE), /* pcrel_offset */
462 /* Group relocations to create a 16, 32, 48 or 64 bit
463 unsigned data or abs address inline. */
465 /* MOVZ: ((S+A) >> 0) & 0xffff */
466 HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
470 FALSE, /* pc_relative */
472 complain_overflow_unsigned, /* complain_on_overflow */
473 bfd_elf_generic_reloc, /* special_function */
474 AARCH64_R_STR (MOVW_UABS_G0), /* name */
475 FALSE, /* partial_inplace */
476 0xffff, /* src_mask */
477 0xffff, /* dst_mask */
478 FALSE), /* pcrel_offset */
480 /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
481 HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */
483 2, /* size (0 = byte, 1 = short, 2 = long) */
485 FALSE, /* pc_relative */
487 complain_overflow_dont, /* complain_on_overflow */
488 bfd_elf_generic_reloc, /* special_function */
489 AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */
490 FALSE, /* partial_inplace */
491 0xffff, /* src_mask */
492 0xffff, /* dst_mask */
493 FALSE), /* pcrel_offset */
495 /* MOVZ: ((S+A) >> 16) & 0xffff */
496 HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE, /* pc_relative */
502 complain_overflow_unsigned, /* complain_on_overflow */
503 bfd_elf_generic_reloc, /* special_function */
504 AARCH64_R_STR (MOVW_UABS_G1), /* name */
505 FALSE, /* partial_inplace */
506 0xffff, /* src_mask */
507 0xffff, /* dst_mask */
508 FALSE), /* pcrel_offset */
510 /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
511 HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */
513 2, /* size (0 = byte, 1 = short, 2 = long) */
515 FALSE, /* pc_relative */
517 complain_overflow_dont, /* complain_on_overflow */
518 bfd_elf_generic_reloc, /* special_function */
519 AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */
520 FALSE, /* partial_inplace */
521 0xffff, /* src_mask */
522 0xffff, /* dst_mask */
523 FALSE), /* pcrel_offset */
525 /* MOVZ: ((S+A) >> 32) & 0xffff */
526 HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */
528 2, /* size (0 = byte, 1 = short, 2 = long) */
530 FALSE, /* pc_relative */
532 complain_overflow_unsigned, /* complain_on_overflow */
533 bfd_elf_generic_reloc, /* special_function */
534 AARCH64_R_STR (MOVW_UABS_G2), /* name */
535 FALSE, /* partial_inplace */
536 0xffff, /* src_mask */
537 0xffff, /* dst_mask */
538 FALSE), /* pcrel_offset */
540 /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
541 HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 FALSE, /* pc_relative */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */
550 FALSE, /* partial_inplace */
551 0xffff, /* src_mask */
552 0xffff, /* dst_mask */
553 FALSE), /* pcrel_offset */
555 /* MOVZ: ((S+A) >> 48) & 0xffff */
556 HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */
558 2, /* size (0 = byte, 1 = short, 2 = long) */
560 FALSE, /* pc_relative */
562 complain_overflow_unsigned, /* complain_on_overflow */
563 bfd_elf_generic_reloc, /* special_function */
564 AARCH64_R_STR (MOVW_UABS_G3), /* name */
565 FALSE, /* partial_inplace */
566 0xffff, /* src_mask */
567 0xffff, /* dst_mask */
568 FALSE), /* pcrel_offset */
570 /* Group relocations to create high part of a 16, 32, 48 or 64 bit
571 signed data or abs address inline. Will change instruction
572 to MOVN or MOVZ depending on sign of calculated value. */
574 /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
575 HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
579 FALSE, /* pc_relative */
581 complain_overflow_signed, /* complain_on_overflow */
582 bfd_elf_generic_reloc, /* special_function */
583 AARCH64_R_STR (MOVW_SABS_G0), /* name */
584 FALSE, /* partial_inplace */
585 0xffff, /* src_mask */
586 0xffff, /* dst_mask */
587 FALSE), /* pcrel_offset */
589 /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
590 HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE, /* pc_relative */
596 complain_overflow_signed, /* complain_on_overflow */
597 bfd_elf_generic_reloc, /* special_function */
598 AARCH64_R_STR (MOVW_SABS_G1), /* name */
599 FALSE, /* partial_inplace */
600 0xffff, /* src_mask */
601 0xffff, /* dst_mask */
602 FALSE), /* pcrel_offset */
604 /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
605 HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
609 FALSE, /* pc_relative */
611 complain_overflow_signed, /* complain_on_overflow */
612 bfd_elf_generic_reloc, /* special_function */
613 AARCH64_R_STR (MOVW_SABS_G2), /* name */
614 FALSE, /* partial_inplace */
615 0xffff, /* src_mask */
616 0xffff, /* dst_mask */
617 FALSE), /* pcrel_offset */
619 /* Relocations to generate 19, 21 and 33 bit PC-relative load/store
620 addresses: PG(x) is (x & ~0xfff). */
622 /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
623 HOWTO (AARCH64_R (LD_PREL_LO19), /* type */
625 2, /* size (0 = byte, 1 = short, 2 = long) */
627 TRUE, /* pc_relative */
629 complain_overflow_signed, /* complain_on_overflow */
630 bfd_elf_generic_reloc, /* special_function */
631 AARCH64_R_STR (LD_PREL_LO19), /* name */
632 FALSE, /* partial_inplace */
633 0x7ffff, /* src_mask */
634 0x7ffff, /* dst_mask */
635 TRUE), /* pcrel_offset */
637 /* ADR: (S+A-P) & 0x1fffff */
638 HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */
640 2, /* size (0 = byte, 1 = short, 2 = long) */
642 TRUE, /* pc_relative */
644 complain_overflow_signed, /* complain_on_overflow */
645 bfd_elf_generic_reloc, /* special_function */
646 AARCH64_R_STR (ADR_PREL_LO21), /* name */
647 FALSE, /* partial_inplace */
648 0x1fffff, /* src_mask */
649 0x1fffff, /* dst_mask */
650 TRUE), /* pcrel_offset */
652 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
653 HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */
655 2, /* size (0 = byte, 1 = short, 2 = long) */
657 TRUE, /* pc_relative */
659 complain_overflow_signed, /* complain_on_overflow */
660 bfd_elf_generic_reloc, /* special_function */
661 AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */
662 FALSE, /* partial_inplace */
663 0x1fffff, /* src_mask */
664 0x1fffff, /* dst_mask */
665 TRUE), /* pcrel_offset */
667 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
668 HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */
670 2, /* size (0 = byte, 1 = short, 2 = long) */
672 TRUE, /* pc_relative */
674 complain_overflow_dont, /* complain_on_overflow */
675 bfd_elf_generic_reloc, /* special_function */
676 AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */
677 FALSE, /* partial_inplace */
678 0x1fffff, /* src_mask */
679 0x1fffff, /* dst_mask */
680 TRUE), /* pcrel_offset */
682 /* ADD: (S+A) & 0xfff [no overflow check] */
683 HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */
685 2, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE, /* pc_relative */
689 complain_overflow_dont, /* complain_on_overflow */
690 bfd_elf_generic_reloc, /* special_function */
691 AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */
692 FALSE, /* partial_inplace */
693 0x3ffc00, /* src_mask */
694 0x3ffc00, /* dst_mask */
695 FALSE), /* pcrel_offset */
697 /* LD/ST8: (S+A) & 0xfff */
698 HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */
700 2, /* size (0 = byte, 1 = short, 2 = long) */
702 FALSE, /* pc_relative */
704 complain_overflow_dont, /* complain_on_overflow */
705 bfd_elf_generic_reloc, /* special_function */
706 AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */
707 FALSE, /* partial_inplace */
708 0xfff, /* src_mask */
709 0xfff, /* dst_mask */
710 FALSE), /* pcrel_offset */
712 /* Relocations for control-flow instructions. */
714 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
715 HOWTO (AARCH64_R (TSTBR14), /* type */
717 2, /* size (0 = byte, 1 = short, 2 = long) */
719 TRUE, /* pc_relative */
721 complain_overflow_signed, /* complain_on_overflow */
722 bfd_elf_generic_reloc, /* special_function */
723 AARCH64_R_STR (TSTBR14), /* name */
724 FALSE, /* partial_inplace */
725 0x3fff, /* src_mask */
726 0x3fff, /* dst_mask */
727 TRUE), /* pcrel_offset */
729 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
730 HOWTO (AARCH64_R (CONDBR19), /* type */
732 2, /* size (0 = byte, 1 = short, 2 = long) */
734 TRUE, /* pc_relative */
736 complain_overflow_signed, /* complain_on_overflow */
737 bfd_elf_generic_reloc, /* special_function */
738 AARCH64_R_STR (CONDBR19), /* name */
739 FALSE, /* partial_inplace */
740 0x7ffff, /* src_mask */
741 0x7ffff, /* dst_mask */
742 TRUE), /* pcrel_offset */
744 /* B: ((S+A-P) >> 2) & 0x3ffffff */
745 HOWTO (AARCH64_R (JUMP26), /* type */
747 2, /* size (0 = byte, 1 = short, 2 = long) */
749 TRUE, /* pc_relative */
751 complain_overflow_signed, /* complain_on_overflow */
752 bfd_elf_generic_reloc, /* special_function */
753 AARCH64_R_STR (JUMP26), /* name */
754 FALSE, /* partial_inplace */
755 0x3ffffff, /* src_mask */
756 0x3ffffff, /* dst_mask */
757 TRUE), /* pcrel_offset */
759 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
760 HOWTO (AARCH64_R (CALL26), /* type */
762 2, /* size (0 = byte, 1 = short, 2 = long) */
764 TRUE, /* pc_relative */
766 complain_overflow_signed, /* complain_on_overflow */
767 bfd_elf_generic_reloc, /* special_function */
768 AARCH64_R_STR (CALL26), /* name */
769 FALSE, /* partial_inplace */
770 0x3ffffff, /* src_mask */
771 0x3ffffff, /* dst_mask */
772 TRUE), /* pcrel_offset */
774 /* LD/ST16: (S+A) & 0xffe */
775 HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */
777 2, /* size (0 = byte, 1 = short, 2 = long) */
779 FALSE, /* pc_relative */
781 complain_overflow_dont, /* complain_on_overflow */
782 bfd_elf_generic_reloc, /* special_function */
783 AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */
784 FALSE, /* partial_inplace */
785 0xffe, /* src_mask */
786 0xffe, /* dst_mask */
787 FALSE), /* pcrel_offset */
789 /* LD/ST32: (S+A) & 0xffc */
790 HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */
792 2, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE, /* pc_relative */
796 complain_overflow_dont, /* complain_on_overflow */
797 bfd_elf_generic_reloc, /* special_function */
798 AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */
799 FALSE, /* partial_inplace */
800 0xffc, /* src_mask */
801 0xffc, /* dst_mask */
802 FALSE), /* pcrel_offset */
804 /* LD/ST64: (S+A) & 0xff8 */
805 HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */
807 2, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE, /* pc_relative */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */
814 FALSE, /* partial_inplace */
815 0xff8, /* src_mask */
816 0xff8, /* dst_mask */
817 FALSE), /* pcrel_offset */
819 /* LD/ST128: (S+A) & 0xff0 */
820 HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */
822 2, /* size (0 = byte, 1 = short, 2 = long) */
824 FALSE, /* pc_relative */
826 complain_overflow_dont, /* complain_on_overflow */
827 bfd_elf_generic_reloc, /* special_function */
828 AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */
829 FALSE, /* partial_inplace */
830 0xff0, /* src_mask */
831 0xff0, /* dst_mask */
832 FALSE), /* pcrel_offset */
834 /* Set a load-literal immediate field to bits
835 0x1FFFFC of G(S)-P */
836 HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */
838 2, /* size (0 = byte,1 = short,2 = long) */
840 TRUE, /* pc_relative */
842 complain_overflow_signed, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 AARCH64_R_STR (GOT_LD_PREL19), /* name */
845 FALSE, /* partial_inplace */
846 0xffffe0, /* src_mask */
847 0xffffe0, /* dst_mask */
848 TRUE), /* pcrel_offset */
850 /* Get to the page for the GOT entry for the symbol
851 (G(S) - P) using an ADRP instruction. */
852 HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */
854 2, /* size (0 = byte, 1 = short, 2 = long) */
856 TRUE, /* pc_relative */
858 complain_overflow_dont, /* complain_on_overflow */
859 bfd_elf_generic_reloc, /* special_function */
860 AARCH64_R_STR (ADR_GOT_PAGE), /* name */
861 FALSE, /* partial_inplace */
862 0x1fffff, /* src_mask */
863 0x1fffff, /* dst_mask */
864 TRUE), /* pcrel_offset */
866 /* LD64: GOT offset G(S) & 0xff8 */
867 HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */
869 2, /* size (0 = byte, 1 = short, 2 = long) */
871 FALSE, /* pc_relative */
873 complain_overflow_dont, /* complain_on_overflow */
874 bfd_elf_generic_reloc, /* special_function */
875 AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */
876 FALSE, /* partial_inplace */
877 0xff8, /* src_mask */
878 0xff8, /* dst_mask */
879 FALSE), /* pcrel_offset */
881 /* LD32: GOT offset G(S) & 0xffc */
882 HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */
884 2, /* size (0 = byte, 1 = short, 2 = long) */
886 FALSE, /* pc_relative */
888 complain_overflow_dont, /* complain_on_overflow */
889 bfd_elf_generic_reloc, /* special_function */
890 AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */
891 FALSE, /* partial_inplace */
892 0xffc, /* src_mask */
893 0xffc, /* dst_mask */
894 FALSE), /* pcrel_offset */
896 /* Lower 16 bits of GOT offset for the symbol. */
897 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */
899 2, /* size (0 = byte, 1 = short, 2 = long) */
901 FALSE, /* pc_relative */
903 complain_overflow_dont, /* complain_on_overflow */
904 bfd_elf_generic_reloc, /* special_function */
905 AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */
906 FALSE, /* partial_inplace */
907 0xffff, /* src_mask */
908 0xffff, /* dst_mask */
909 FALSE), /* pcrel_offset */
911 /* Higher 16 bits of GOT offset for the symbol. */
912 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */
914 2, /* size (0 = byte, 1 = short, 2 = long) */
916 FALSE, /* pc_relative */
918 complain_overflow_unsigned, /* complain_on_overflow */
919 bfd_elf_generic_reloc, /* special_function */
920 AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */
921 FALSE, /* partial_inplace */
922 0xffff, /* src_mask */
923 0xffff, /* dst_mask */
924 FALSE), /* pcrel_offset */
926 /* LD64: GOT offset for the symbol. */
927 HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */
929 2, /* size (0 = byte, 1 = short, 2 = long) */
931 FALSE, /* pc_relative */
933 complain_overflow_unsigned, /* complain_on_overflow */
934 bfd_elf_generic_reloc, /* special_function */
935 AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */
936 FALSE, /* partial_inplace */
937 0x7ff8, /* src_mask */
938 0x7ff8, /* dst_mask */
939 FALSE), /* pcrel_offset */
941 /* LD32: GOT offset to the page address of GOT table.
942 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
943 HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */
945 2, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_unsigned, /* complain_on_overflow */
950 bfd_elf_generic_reloc, /* special_function */
951 AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */
952 FALSE, /* partial_inplace */
953 0x5ffc, /* src_mask */
954 0x5ffc, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* LD64: GOT offset to the page address of GOT table.
958 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
959 HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */
961 2, /* size (0 = byte, 1 = short, 2 = long) */
963 FALSE, /* pc_relative */
965 complain_overflow_unsigned, /* complain_on_overflow */
966 bfd_elf_generic_reloc, /* special_function */
967 AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */
968 FALSE, /* partial_inplace */
969 0x7ff8, /* src_mask */
970 0x7ff8, /* dst_mask */
971 FALSE), /* pcrel_offset */
973 /* Get to the page for the GOT entry for the symbol
974 (G(S) - P) using an ADRP instruction. */
975 HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */
977 2, /* size (0 = byte, 1 = short, 2 = long) */
979 TRUE, /* pc_relative */
981 complain_overflow_dont, /* complain_on_overflow */
982 bfd_elf_generic_reloc, /* special_function */
983 AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */
984 FALSE, /* partial_inplace */
985 0x1fffff, /* src_mask */
986 0x1fffff, /* dst_mask */
987 TRUE), /* pcrel_offset */
989 HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */
991 2, /* size (0 = byte, 1 = short, 2 = long) */
993 TRUE, /* pc_relative */
995 complain_overflow_dont, /* complain_on_overflow */
996 bfd_elf_generic_reloc, /* special_function */
997 AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */
998 FALSE, /* partial_inplace */
999 0x1fffff, /* src_mask */
1000 0x1fffff, /* dst_mask */
1001 TRUE), /* pcrel_offset */
1003 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1004 HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */
1006 2, /* size (0 = byte, 1 = short, 2 = long) */
1008 FALSE, /* pc_relative */
1010 complain_overflow_dont, /* complain_on_overflow */
1011 bfd_elf_generic_reloc, /* special_function */
1012 AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */
1013 FALSE, /* partial_inplace */
1014 0xfff, /* src_mask */
1015 0xfff, /* dst_mask */
1016 FALSE), /* pcrel_offset */
1018 /* Lower 16 bits of GOT offset to tls_index. */
1019 HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */
1021 2, /* size (0 = byte, 1 = short, 2 = long) */
1023 FALSE, /* pc_relative */
1025 complain_overflow_dont, /* complain_on_overflow */
1026 bfd_elf_generic_reloc, /* special_function */
1027 AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */
1028 FALSE, /* partial_inplace */
1029 0xffff, /* src_mask */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1033 /* Higher 16 bits of GOT offset to tls_index. */
1034 HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */
1035 16, /* rightshift */
1036 2, /* size (0 = byte, 1 = short, 2 = long) */
1038 FALSE, /* pc_relative */
1040 complain_overflow_unsigned, /* complain_on_overflow */
1041 bfd_elf_generic_reloc, /* special_function */
1042 AARCH64_R_STR (TLSGD_MOVW_G1), /* name */
1043 FALSE, /* partial_inplace */
1044 0xffff, /* src_mask */
1045 0xffff, /* dst_mask */
1046 FALSE), /* pcrel_offset */
1048 HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */
1049 12, /* rightshift */
1050 2, /* size (0 = byte, 1 = short, 2 = long) */
1052 FALSE, /* pc_relative */
1054 complain_overflow_dont, /* complain_on_overflow */
1055 bfd_elf_generic_reloc, /* special_function */
1056 AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */
1057 FALSE, /* partial_inplace */
1058 0x1fffff, /* src_mask */
1059 0x1fffff, /* dst_mask */
1060 FALSE), /* pcrel_offset */
1062 HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */
1064 2, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE, /* pc_relative */
1068 complain_overflow_dont, /* complain_on_overflow */
1069 bfd_elf_generic_reloc, /* special_function */
1070 AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */
1071 FALSE, /* partial_inplace */
1072 0xff8, /* src_mask */
1073 0xff8, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1076 HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */
1078 2, /* size (0 = byte, 1 = short, 2 = long) */
1080 FALSE, /* pc_relative */
1082 complain_overflow_dont, /* complain_on_overflow */
1083 bfd_elf_generic_reloc, /* special_function */
1084 AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */
1085 FALSE, /* partial_inplace */
1086 0xffc, /* src_mask */
1087 0xffc, /* dst_mask */
1088 FALSE), /* pcrel_offset */
1090 HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */
1092 2, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE, /* pc_relative */
1096 complain_overflow_dont, /* complain_on_overflow */
1097 bfd_elf_generic_reloc, /* special_function */
1098 AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */
1099 FALSE, /* partial_inplace */
1100 0x1ffffc, /* src_mask */
1101 0x1ffffc, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1104 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */
1106 2, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE, /* pc_relative */
1110 complain_overflow_dont, /* complain_on_overflow */
1111 bfd_elf_generic_reloc, /* special_function */
1112 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */
1113 FALSE, /* partial_inplace */
1114 0xffff, /* src_mask */
1115 0xffff, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1118 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */
1119 16, /* rightshift */
1120 2, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE, /* pc_relative */
1124 complain_overflow_unsigned, /* complain_on_overflow */
1125 bfd_elf_generic_reloc, /* special_function */
1126 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */
1127 FALSE, /* partial_inplace */
1128 0xffff, /* src_mask */
1129 0xffff, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1132 /* ADD: bit[23:12] of byte offset to module TLS base address. */
1133 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */
1134 12, /* rightshift */
1135 2, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE, /* pc_relative */
1139 complain_overflow_unsigned, /* complain_on_overflow */
1140 bfd_elf_generic_reloc, /* special_function */
1141 AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */
1142 FALSE, /* partial_inplace */
1143 0xfff, /* src_mask */
1144 0xfff, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1147 /* Unsigned 12 bit byte offset to module TLS base address. */
1148 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */
1150 2, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE, /* pc_relative */
1154 complain_overflow_unsigned, /* complain_on_overflow */
1155 bfd_elf_generic_reloc, /* special_function */
1156 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */
1157 FALSE, /* partial_inplace */
1158 0xfff, /* src_mask */
1159 0xfff, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1162 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
1163 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */
1165 2, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_dont, /* complain_on_overflow */
1170 bfd_elf_generic_reloc, /* special_function */
1171 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */
1172 FALSE, /* partial_inplace */
1173 0xfff, /* src_mask */
1174 0xfff, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1178 HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */
1180 2, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE, /* pc_relative */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 bfd_elf_generic_reloc, /* special_function */
1186 AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */
1187 FALSE, /* partial_inplace */
1188 0xfff, /* src_mask */
1189 0xfff, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1192 /* Get to the page for the GOT entry for the symbol
1193 (G(S) - P) using an ADRP instruction. */
1194 HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */
1195 12, /* rightshift */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1198 TRUE, /* pc_relative */
1200 complain_overflow_signed, /* complain_on_overflow */
1201 bfd_elf_generic_reloc, /* special_function */
1202 AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */
1203 FALSE, /* partial_inplace */
1204 0x1fffff, /* src_mask */
1205 0x1fffff, /* dst_mask */
1206 TRUE), /* pcrel_offset */
1208 HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1212 TRUE, /* pc_relative */
1214 complain_overflow_signed, /* complain_on_overflow */
1215 bfd_elf_generic_reloc, /* special_function */
1216 AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */
1217 FALSE, /* partial_inplace */
1218 0x1fffff, /* src_mask */
1219 0x1fffff, /* dst_mask */
1220 TRUE), /* pcrel_offset */
1222 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1223 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */
1225 2, /* size (0 = byte, 1 = short, 2 = long) */
1227 FALSE, /* pc_relative */
1229 complain_overflow_unsigned, /* complain_on_overflow */
1230 bfd_elf_generic_reloc, /* special_function */
1231 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */
1232 FALSE, /* partial_inplace */
1233 0x1ffc00, /* src_mask */
1234 0x1ffc00, /* dst_mask */
1235 FALSE), /* pcrel_offset */
1237 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
1238 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */
1240 2, /* size (0 = byte, 1 = short, 2 = long) */
1242 FALSE, /* pc_relative */
1244 complain_overflow_dont, /* complain_on_overflow */
1245 bfd_elf_generic_reloc, /* special_function */
1246 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */
1247 FALSE, /* partial_inplace */
1248 0x1ffc00, /* src_mask */
1249 0x1ffc00, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1252 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1253 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */
1255 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 FALSE, /* pc_relative */
1259 complain_overflow_unsigned, /* complain_on_overflow */
1260 bfd_elf_generic_reloc, /* special_function */
1261 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */
1262 FALSE, /* partial_inplace */
1263 0x3ffc00, /* src_mask */
1264 0x3ffc00, /* dst_mask */
1265 FALSE), /* pcrel_offset */
1267 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
1268 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE, /* pc_relative */
1274 complain_overflow_dont, /* complain_on_overflow */
1275 bfd_elf_generic_reloc, /* special_function */
1276 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */
1277 FALSE, /* partial_inplace */
1278 0xffc00, /* src_mask */
1279 0xffc00, /* dst_mask */
1280 FALSE), /* pcrel_offset */
1282 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1283 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */
1285 2, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE, /* pc_relative */
1289 complain_overflow_unsigned, /* complain_on_overflow */
1290 bfd_elf_generic_reloc, /* special_function */
1291 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */
1292 FALSE, /* partial_inplace */
1293 0x3ffc00, /* src_mask */
1294 0x3ffc00, /* dst_mask */
1295 FALSE), /* pcrel_offset */
1297 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
1298 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */
1300 2, /* size (0 = byte, 1 = short, 2 = long) */
1302 FALSE, /* pc_relative */
1304 complain_overflow_dont, /* complain_on_overflow */
1305 bfd_elf_generic_reloc, /* special_function */
1306 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */
1307 FALSE, /* partial_inplace */
1308 0x7fc00, /* src_mask */
1309 0x7fc00, /* dst_mask */
1310 FALSE), /* pcrel_offset */
1312 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1313 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */
1315 2, /* size (0 = byte, 1 = short, 2 = long) */
1317 FALSE, /* pc_relative */
1319 complain_overflow_unsigned, /* complain_on_overflow */
1320 bfd_elf_generic_reloc, /* special_function */
1321 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */
1322 FALSE, /* partial_inplace */
1323 0x3ffc00, /* src_mask */
1324 0x3ffc00, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1327 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
1328 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */
1330 2, /* size (0 = byte, 1 = short, 2 = long) */
1332 FALSE, /* pc_relative */
1334 complain_overflow_dont, /* complain_on_overflow */
1335 bfd_elf_generic_reloc, /* special_function */
1336 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */
1337 FALSE, /* partial_inplace */
1338 0x3ffc00, /* src_mask */
1339 0x3ffc00, /* dst_mask */
1340 FALSE), /* pcrel_offset */
1342 /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
1343 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */
1345 2, /* size (0 = byte, 1 = short, 2 = long) */
1347 FALSE, /* pc_relative */
1349 complain_overflow_unsigned, /* complain_on_overflow */
1350 bfd_elf_generic_reloc, /* special_function */
1351 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */
1352 FALSE, /* partial_inplace */
1353 0xffff, /* src_mask */
1354 0xffff, /* dst_mask */
1355 FALSE), /* pcrel_offset */
1357 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
1358 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */
1360 2, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE, /* pc_relative */
1364 complain_overflow_dont, /* complain_on_overflow */
1365 bfd_elf_generic_reloc, /* special_function */
1366 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */
1367 FALSE, /* partial_inplace */
1368 0xffff, /* src_mask */
1369 0xffff, /* dst_mask */
1370 FALSE), /* pcrel_offset */
1372 /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
1373 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */
1374 16, /* rightshift */
1375 2, /* size (0 = byte, 1 = short, 2 = long) */
1377 FALSE, /* pc_relative */
1379 complain_overflow_unsigned, /* complain_on_overflow */
1380 bfd_elf_generic_reloc, /* special_function */
1381 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */
1382 FALSE, /* partial_inplace */
1383 0xffff, /* src_mask */
1384 0xffff, /* dst_mask */
1385 FALSE), /* pcrel_offset */
1387 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
1388 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */
1389 16, /* rightshift */
1390 2, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE, /* pc_relative */
1394 complain_overflow_dont, /* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */
1397 FALSE, /* partial_inplace */
1398 0xffff, /* src_mask */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1402 /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
1403 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */
1404 32, /* rightshift */
1405 2, /* size (0 = byte, 1 = short, 2 = long) */
1407 FALSE, /* pc_relative */
1409 complain_overflow_unsigned, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */
1412 FALSE, /* partial_inplace */
1413 0xffff, /* src_mask */
1414 0xffff, /* dst_mask */
1415 FALSE), /* pcrel_offset */
1417 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */
1418 32, /* rightshift */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 FALSE, /* pc_relative */
1423 complain_overflow_unsigned, /* complain_on_overflow */
1424 bfd_elf_generic_reloc, /* special_function */
1425 AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */
1426 FALSE, /* partial_inplace */
1427 0xffff, /* src_mask */
1428 0xffff, /* dst_mask */
1429 FALSE), /* pcrel_offset */
1431 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */
1432 16, /* rightshift */
1433 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 bfd_elf_generic_reloc, /* special_function */
1439 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */
1440 FALSE, /* partial_inplace */
1441 0xffff, /* src_mask */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1445 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */
1446 16, /* rightshift */
1447 2, /* size (0 = byte, 1 = short, 2 = long) */
1449 FALSE, /* pc_relative */
1451 complain_overflow_dont, /* complain_on_overflow */
1452 bfd_elf_generic_reloc, /* special_function */
1453 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */
1454 FALSE, /* partial_inplace */
1455 0xffff, /* src_mask */
1456 0xffff, /* dst_mask */
1457 FALSE), /* pcrel_offset */
1459 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */
1461 2, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE, /* pc_relative */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 bfd_elf_generic_reloc, /* special_function */
1467 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */
1468 FALSE, /* partial_inplace */
1469 0xffff, /* src_mask */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1473 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */
1475 2, /* size (0 = byte, 1 = short, 2 = long) */
1477 FALSE, /* pc_relative */
1479 complain_overflow_dont, /* complain_on_overflow */
1480 bfd_elf_generic_reloc, /* special_function */
1481 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */
1482 FALSE, /* partial_inplace */
1483 0xffff, /* src_mask */
1484 0xffff, /* dst_mask */
1485 FALSE), /* pcrel_offset */
1487 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */
1488 12, /* rightshift */
1489 2, /* size (0 = byte, 1 = short, 2 = long) */
1491 FALSE, /* pc_relative */
1493 complain_overflow_unsigned, /* complain_on_overflow */
1494 bfd_elf_generic_reloc, /* special_function */
1495 AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */
1496 FALSE, /* partial_inplace */
1497 0xfff, /* src_mask */
1498 0xfff, /* dst_mask */
1499 FALSE), /* pcrel_offset */
1501 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */
1503 2, /* size (0 = byte, 1 = short, 2 = long) */
1505 FALSE, /* pc_relative */
1507 complain_overflow_unsigned, /* complain_on_overflow */
1508 bfd_elf_generic_reloc, /* special_function */
1509 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */
1510 FALSE, /* partial_inplace */
1511 0xfff, /* src_mask */
1512 0xfff, /* dst_mask */
1513 FALSE), /* pcrel_offset */
1515 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */
1517 2, /* size (0 = byte, 1 = short, 2 = long) */
1519 FALSE, /* pc_relative */
1521 complain_overflow_dont, /* complain_on_overflow */
1522 bfd_elf_generic_reloc, /* special_function */
1523 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */
1524 FALSE, /* partial_inplace */
1525 0xfff, /* src_mask */
1526 0xfff, /* dst_mask */
1527 FALSE), /* pcrel_offset */
1529 HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */
1531 2, /* size (0 = byte, 1 = short, 2 = long) */
1533 TRUE, /* pc_relative */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 bfd_elf_generic_reloc, /* special_function */
1537 AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */
1538 FALSE, /* partial_inplace */
1539 0x0ffffe0, /* src_mask */
1540 0x0ffffe0, /* dst_mask */
1541 TRUE), /* pcrel_offset */
1543 HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */
1545 2, /* size (0 = byte, 1 = short, 2 = long) */
1547 TRUE, /* pc_relative */
1549 complain_overflow_dont, /* complain_on_overflow */
1550 bfd_elf_generic_reloc, /* special_function */
1551 AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */
1552 FALSE, /* partial_inplace */
1553 0x1fffff, /* src_mask */
1554 0x1fffff, /* dst_mask */
1555 TRUE), /* pcrel_offset */
1557 /* Get to the page for the GOT entry for the symbol
1558 (G(S) - P) using an ADRP instruction. */
1559 HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */
1560 12, /* rightshift */
1561 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 TRUE, /* pc_relative */
1565 complain_overflow_dont, /* complain_on_overflow */
1566 bfd_elf_generic_reloc, /* special_function */
1567 AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */
1568 FALSE, /* partial_inplace */
1569 0x1fffff, /* src_mask */
1570 0x1fffff, /* dst_mask */
1571 TRUE), /* pcrel_offset */
1573 /* LD64: GOT offset G(S) & 0xff8. */
1574 HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */
1576 2, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE, /* pc_relative */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 bfd_elf_generic_reloc, /* special_function */
1582 AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */
1583 FALSE, /* partial_inplace */
1584 0xff8, /* src_mask */
1585 0xff8, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1588 /* LD32: GOT offset G(S) & 0xffc. */
1589 HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */
1591 2, /* size (0 = byte, 1 = short, 2 = long) */
1593 FALSE, /* pc_relative */
1595 complain_overflow_dont, /* complain_on_overflow */
1596 bfd_elf_generic_reloc, /* special_function */
1597 AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */
1598 FALSE, /* partial_inplace */
1599 0xffc, /* src_mask */
1600 0xffc, /* dst_mask */
1601 FALSE), /* pcrel_offset */
1603 /* ADD: GOT offset G(S) & 0xfff. */
1604 HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */
1606 2, /* size (0 = byte, 1 = short, 2 = long) */
1608 FALSE, /* pc_relative */
1610 complain_overflow_dont, /* complain_on_overflow */
1611 bfd_elf_generic_reloc, /* special_function */
1612 AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */
1613 FALSE, /* partial_inplace */
1614 0xfff, /* src_mask */
1615 0xfff, /* dst_mask */
1616 FALSE), /* pcrel_offset */
1618 HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */
1619 16, /* rightshift */
1620 2, /* size (0 = byte, 1 = short, 2 = long) */
1622 FALSE, /* pc_relative */
1624 complain_overflow_unsigned, /* complain_on_overflow */
1625 bfd_elf_generic_reloc, /* special_function */
1626 AARCH64_R_STR (TLSDESC_OFF_G1), /* name */
1627 FALSE, /* partial_inplace */
1628 0xffff, /* src_mask */
1629 0xffff, /* dst_mask */
1630 FALSE), /* pcrel_offset */
1632 HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */
1634 2, /* size (0 = byte, 1 = short, 2 = long) */
1636 FALSE, /* pc_relative */
1638 complain_overflow_dont, /* complain_on_overflow */
1639 bfd_elf_generic_reloc, /* special_function */
1640 AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */
1641 FALSE, /* partial_inplace */
1642 0xffff, /* src_mask */
1643 0xffff, /* dst_mask */
1644 FALSE), /* pcrel_offset */
1646 HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */
1648 2, /* size (0 = byte, 1 = short, 2 = long) */
1650 FALSE, /* pc_relative */
1652 complain_overflow_dont, /* complain_on_overflow */
1653 bfd_elf_generic_reloc, /* special_function */
1654 AARCH64_R_STR (TLSDESC_LDR), /* name */
1655 FALSE, /* partial_inplace */
1658 FALSE), /* pcrel_offset */
1660 HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */
1662 2, /* size (0 = byte, 1 = short, 2 = long) */
1664 FALSE, /* pc_relative */
1666 complain_overflow_dont, /* complain_on_overflow */
1667 bfd_elf_generic_reloc, /* special_function */
1668 AARCH64_R_STR (TLSDESC_ADD), /* name */
1669 FALSE, /* partial_inplace */
1672 FALSE), /* pcrel_offset */
1674 HOWTO (AARCH64_R (TLSDESC_CALL), /* type */
1676 2, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 bfd_elf_generic_reloc, /* special_function */
1682 AARCH64_R_STR (TLSDESC_CALL), /* name */
1683 FALSE, /* partial_inplace */
1686 FALSE), /* pcrel_offset */
1688 HOWTO (AARCH64_R (COPY), /* type */
1690 2, /* size (0 = byte, 1 = short, 2 = long) */
1692 FALSE, /* pc_relative */
1694 complain_overflow_bitfield, /* complain_on_overflow */
1695 bfd_elf_generic_reloc, /* special_function */
1696 AARCH64_R_STR (COPY), /* name */
1697 TRUE, /* partial_inplace */
1698 0xffffffff, /* src_mask */
1699 0xffffffff, /* dst_mask */
1700 FALSE), /* pcrel_offset */
1702 HOWTO (AARCH64_R (GLOB_DAT), /* type */
1704 2, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE, /* pc_relative */
1708 complain_overflow_bitfield, /* complain_on_overflow */
1709 bfd_elf_generic_reloc, /* special_function */
1710 AARCH64_R_STR (GLOB_DAT), /* name */
1711 TRUE, /* partial_inplace */
1712 0xffffffff, /* src_mask */
1713 0xffffffff, /* dst_mask */
1714 FALSE), /* pcrel_offset */
1716 HOWTO (AARCH64_R (JUMP_SLOT), /* type */
1718 2, /* size (0 = byte, 1 = short, 2 = long) */
1720 FALSE, /* pc_relative */
1722 complain_overflow_bitfield, /* complain_on_overflow */
1723 bfd_elf_generic_reloc, /* special_function */
1724 AARCH64_R_STR (JUMP_SLOT), /* name */
1725 TRUE, /* partial_inplace */
1726 0xffffffff, /* src_mask */
1727 0xffffffff, /* dst_mask */
1728 FALSE), /* pcrel_offset */
1730 HOWTO (AARCH64_R (RELATIVE), /* type */
1732 2, /* size (0 = byte, 1 = short, 2 = long) */
1734 FALSE, /* pc_relative */
1736 complain_overflow_bitfield, /* complain_on_overflow */
1737 bfd_elf_generic_reloc, /* special_function */
1738 AARCH64_R_STR (RELATIVE), /* name */
1739 TRUE, /* partial_inplace */
1740 ALL_ONES, /* src_mask */
1741 ALL_ONES, /* dst_mask */
1742 FALSE), /* pcrel_offset */
1744 HOWTO (AARCH64_R (TLS_DTPMOD), /* 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 */
1753 AARCH64_R_STR (TLS_DTPMOD64), /* name */
1755 AARCH64_R_STR (TLS_DTPMOD), /* name */
1757 FALSE, /* partial_inplace */
1759 ALL_ONES, /* dst_mask */
1760 FALSE), /* pc_reloffset */
1762 HOWTO (AARCH64_R (TLS_DTPREL), /* type */
1764 2, /* size (0 = byte, 1 = short, 2 = long) */
1766 FALSE, /* pc_relative */
1768 complain_overflow_dont, /* complain_on_overflow */
1769 bfd_elf_generic_reloc, /* special_function */
1771 AARCH64_R_STR (TLS_DTPREL64), /* name */
1773 AARCH64_R_STR (TLS_DTPREL), /* name */
1775 FALSE, /* partial_inplace */
1777 ALL_ONES, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1780 HOWTO (AARCH64_R (TLS_TPREL), /* type */
1782 2, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE, /* pc_relative */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 bfd_elf_generic_reloc, /* special_function */
1789 AARCH64_R_STR (TLS_TPREL64), /* name */
1791 AARCH64_R_STR (TLS_TPREL), /* name */
1793 FALSE, /* partial_inplace */
1795 ALL_ONES, /* dst_mask */
1796 FALSE), /* pcrel_offset */
1798 HOWTO (AARCH64_R (TLSDESC), /* type */
1800 2, /* size (0 = byte, 1 = short, 2 = long) */
1802 FALSE, /* pc_relative */
1804 complain_overflow_dont, /* complain_on_overflow */
1805 bfd_elf_generic_reloc, /* special_function */
1806 AARCH64_R_STR (TLSDESC), /* name */
1807 FALSE, /* partial_inplace */
1809 ALL_ONES, /* dst_mask */
1810 FALSE), /* pcrel_offset */
1812 HOWTO (AARCH64_R (IRELATIVE), /* type */
1814 2, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE, /* pc_relative */
1818 complain_overflow_bitfield, /* complain_on_overflow */
1819 bfd_elf_generic_reloc, /* special_function */
1820 AARCH64_R_STR (IRELATIVE), /* name */
1821 FALSE, /* partial_inplace */
1823 ALL_ONES, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1829 static reloc_howto_type elfNN_aarch64_howto_none =
1830 HOWTO (R_AARCH64_NONE, /* type */
1832 3, /* size (0 = byte, 1 = short, 2 = long) */
1834 FALSE, /* pc_relative */
1836 complain_overflow_dont,/* complain_on_overflow */
1837 bfd_elf_generic_reloc, /* special_function */
1838 "R_AARCH64_NONE", /* name */
1839 FALSE, /* partial_inplace */
1842 FALSE); /* pcrel_offset */
1844 /* Given HOWTO, return the bfd internal relocation enumerator. */
1846 static bfd_reloc_code_real_type
1847 elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto)
1850 = (int) ARRAY_SIZE (elfNN_aarch64_howto_table);
1851 const ptrdiff_t offset
1852 = howto - elfNN_aarch64_howto_table;
1854 if (offset > 0 && offset < size - 1)
1855 return BFD_RELOC_AARCH64_RELOC_START + offset;
1857 if (howto == &elfNN_aarch64_howto_none)
1858 return BFD_RELOC_AARCH64_NONE;
1860 return BFD_RELOC_AARCH64_RELOC_START;
1863 /* Given R_TYPE, return the bfd internal relocation enumerator. */
1865 static bfd_reloc_code_real_type
1866 elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type)
1868 static bfd_boolean initialized_p = FALSE;
1869 /* Indexed by R_TYPE, values are offsets in the howto_table. */
1870 static unsigned int offsets[R_AARCH64_end];
1872 if (initialized_p == FALSE)
1876 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
1877 if (elfNN_aarch64_howto_table[i].type != 0)
1878 offsets[elfNN_aarch64_howto_table[i].type] = i;
1880 initialized_p = TRUE;
1883 if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL)
1884 return BFD_RELOC_AARCH64_NONE;
1886 /* PR 17512: file: b371e70a. */
1887 if (r_type >= R_AARCH64_end)
1889 _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type);
1890 bfd_set_error (bfd_error_bad_value);
1891 return BFD_RELOC_AARCH64_NONE;
1894 return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type];
1897 struct elf_aarch64_reloc_map
1899 bfd_reloc_code_real_type from;
1900 bfd_reloc_code_real_type to;
1903 /* Map bfd generic reloc to AArch64-specific reloc. */
1904 static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] =
1906 {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE},
1908 /* Basic data relocations. */
1909 {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN},
1910 {BFD_RELOC_64, BFD_RELOC_AARCH64_64},
1911 {BFD_RELOC_32, BFD_RELOC_AARCH64_32},
1912 {BFD_RELOC_16, BFD_RELOC_AARCH64_16},
1913 {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL},
1914 {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL},
1915 {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL},
1918 /* Given the bfd internal relocation enumerator in CODE, return the
1919 corresponding howto entry. */
1921 static reloc_howto_type *
1922 elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code)
1926 /* Convert bfd generic reloc to AArch64-specific reloc. */
1927 if (code < BFD_RELOC_AARCH64_RELOC_START
1928 || code > BFD_RELOC_AARCH64_RELOC_END)
1929 for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++)
1930 if (elf_aarch64_reloc_map[i].from == code)
1932 code = elf_aarch64_reloc_map[i].to;
1936 if (code > BFD_RELOC_AARCH64_RELOC_START
1937 && code < BFD_RELOC_AARCH64_RELOC_END)
1938 if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type)
1939 return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START];
1941 if (code == BFD_RELOC_AARCH64_NONE)
1942 return &elfNN_aarch64_howto_none;
1947 static reloc_howto_type *
1948 elfNN_aarch64_howto_from_type (unsigned int r_type)
1950 bfd_reloc_code_real_type val;
1951 reloc_howto_type *howto;
1956 bfd_set_error (bfd_error_bad_value);
1961 if (r_type == R_AARCH64_NONE)
1962 return &elfNN_aarch64_howto_none;
1964 val = elfNN_aarch64_bfd_reloc_from_type (r_type);
1965 howto = elfNN_aarch64_howto_from_bfd_reloc (val);
1970 bfd_set_error (bfd_error_bad_value);
1975 elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
1976 Elf_Internal_Rela *elf_reloc)
1978 unsigned int r_type;
1980 r_type = ELFNN_R_TYPE (elf_reloc->r_info);
1981 bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type);
1984 static reloc_howto_type *
1985 elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1986 bfd_reloc_code_real_type code)
1988 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code);
1993 bfd_set_error (bfd_error_bad_value);
1997 static reloc_howto_type *
1998 elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2003 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
2004 if (elfNN_aarch64_howto_table[i].name != NULL
2005 && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0)
2006 return &elfNN_aarch64_howto_table[i];
2011 #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
2012 #define TARGET_LITTLE_NAME "elfNN-littleaarch64"
2013 #define TARGET_BIG_SYM aarch64_elfNN_be_vec
2014 #define TARGET_BIG_NAME "elfNN-bigaarch64"
2016 /* The linker script knows the section names for placement.
2017 The entry_names are used to do simple name mangling on the stubs.
2018 Given a function name, and its type, the stub can be found. The
2019 name can be changed. The only requirement is the %s be present. */
2020 #define STUB_ENTRY_NAME "__%s_veneer"
2022 /* The name of the dynamic interpreter. This is put in the .interp
2024 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2026 #define AARCH64_MAX_FWD_BRANCH_OFFSET \
2027 (((1 << 25) - 1) << 2)
2028 #define AARCH64_MAX_BWD_BRANCH_OFFSET \
2031 #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
2032 #define AARCH64_MIN_ADRP_IMM (-(1 << 20))
2035 aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place)
2037 bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12;
2038 return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM;
2042 aarch64_valid_branch_p (bfd_vma value, bfd_vma place)
2044 bfd_signed_vma offset = (bfd_signed_vma) (value - place);
2045 return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET
2046 && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET);
2049 static const uint32_t aarch64_adrp_branch_stub [] =
2051 0x90000010, /* adrp ip0, X */
2052 /* R_AARCH64_ADR_HI21_PCREL(X) */
2053 0x91000210, /* add ip0, ip0, :lo12:X */
2054 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2055 0xd61f0200, /* br ip0 */
2058 static const uint32_t aarch64_long_branch_stub[] =
2061 0x58000090, /* ldr ip0, 1f */
2063 0x18000090, /* ldr wip0, 1f */
2065 0x10000011, /* adr ip1, #0 */
2066 0x8b110210, /* add ip0, ip0, ip1 */
2067 0xd61f0200, /* br ip0 */
2068 0x00000000, /* 1: .xword or .word
2069 R_AARCH64_PRELNN(X) + 12
2074 static const uint32_t aarch64_erratum_835769_stub[] =
2076 0x00000000, /* Placeholder for multiply accumulate. */
2077 0x14000000, /* b <label> */
2080 static const uint32_t aarch64_erratum_843419_stub[] =
2082 0x00000000, /* Placeholder for LDR instruction. */
2083 0x14000000, /* b <label> */
2086 /* Section name for stubs is the associated section name plus this
2088 #define STUB_SUFFIX ".stub"
2090 enum elf_aarch64_stub_type
2093 aarch64_stub_adrp_branch,
2094 aarch64_stub_long_branch,
2095 aarch64_stub_erratum_835769_veneer,
2096 aarch64_stub_erratum_843419_veneer,
2099 struct elf_aarch64_stub_hash_entry
2101 /* Base hash table entry structure. */
2102 struct bfd_hash_entry root;
2104 /* The stub section. */
2107 /* Offset within stub_sec of the beginning of this stub. */
2108 bfd_vma stub_offset;
2110 /* Given the symbol's value and its section we can determine its final
2111 value when building the stubs (so the stub knows where to jump). */
2112 bfd_vma target_value;
2113 asection *target_section;
2115 enum elf_aarch64_stub_type stub_type;
2117 /* The symbol table entry, if any, that this was derived from. */
2118 struct elf_aarch64_link_hash_entry *h;
2120 /* Destination symbol type */
2121 unsigned char st_type;
2123 /* Where this stub is being called from, or, in the case of combined
2124 stub sections, the first input section in the group. */
2127 /* The name for the local symbol at the start of this stub. The
2128 stub name in the hash table has to be unique; this does not, so
2129 it can be friendlier. */
2132 /* The instruction which caused this stub to be generated (only valid for
2133 erratum 835769 workaround stubs at present). */
2134 uint32_t veneered_insn;
2136 /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
2137 bfd_vma adrp_offset;
2140 /* Used to build a map of a section. This is required for mixed-endian
2143 typedef struct elf_elf_section_map
2148 elf_aarch64_section_map;
2151 typedef struct _aarch64_elf_section_data
2153 struct bfd_elf_section_data elf;
2154 unsigned int mapcount;
2155 unsigned int mapsize;
2156 elf_aarch64_section_map *map;
2158 _aarch64_elf_section_data;
2160 #define elf_aarch64_section_data(sec) \
2161 ((_aarch64_elf_section_data *) elf_section_data (sec))
2163 /* The size of the thread control block which is defined to be two pointers. */
2164 #define TCB_SIZE (ARCH_SIZE/8)*2
2166 struct elf_aarch64_local_symbol
2168 unsigned int got_type;
2169 bfd_signed_vma got_refcount;
2172 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
2173 offset is from the end of the jump table and reserved entries
2176 The magic value (bfd_vma) -1 indicates that an offset has not be
2178 bfd_vma tlsdesc_got_jump_table_offset;
2181 struct elf_aarch64_obj_tdata
2183 struct elf_obj_tdata root;
2185 /* local symbol descriptors */
2186 struct elf_aarch64_local_symbol *locals;
2188 /* Zero to warn when linking objects with incompatible enum sizes. */
2189 int no_enum_size_warning;
2191 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2192 int no_wchar_size_warning;
2195 #define elf_aarch64_tdata(bfd) \
2196 ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
2198 #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
2200 #define is_aarch64_elf(bfd) \
2201 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2202 && elf_tdata (bfd) != NULL \
2203 && elf_object_id (bfd) == AARCH64_ELF_DATA)
2206 elfNN_aarch64_mkobject (bfd *abfd)
2208 return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata),
2212 #define elf_aarch64_hash_entry(ent) \
2213 ((struct elf_aarch64_link_hash_entry *)(ent))
2215 #define GOT_UNKNOWN 0
2216 #define GOT_NORMAL 1
2217 #define GOT_TLS_GD 2
2218 #define GOT_TLS_IE 4
2219 #define GOT_TLSDESC_GD 8
2221 #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
2223 /* AArch64 ELF linker hash entry. */
2224 struct elf_aarch64_link_hash_entry
2226 struct elf_link_hash_entry root;
2228 /* Track dynamic relocs copied for this symbol. */
2229 struct elf_dyn_relocs *dyn_relocs;
2231 /* Since PLT entries have variable size, we need to record the
2232 index into .got.plt instead of recomputing it from the PLT
2234 bfd_signed_vma plt_got_offset;
2236 /* Bit mask representing the type of GOT entry(s) if any required by
2238 unsigned int got_type;
2240 /* A pointer to the most recently used stub hash entry against this
2242 struct elf_aarch64_stub_hash_entry *stub_cache;
2244 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2245 is from the end of the jump table and reserved entries within the PLTGOT.
2247 The magic value (bfd_vma) -1 indicates that an offset has not
2249 bfd_vma tlsdesc_got_jump_table_offset;
2253 elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
2255 unsigned long r_symndx)
2258 return elf_aarch64_hash_entry (h)->got_type;
2260 if (! elf_aarch64_locals (abfd))
2263 return elf_aarch64_locals (abfd)[r_symndx].got_type;
2266 /* Get the AArch64 elf linker hash table from a link_info structure. */
2267 #define elf_aarch64_hash_table(info) \
2268 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
2270 #define aarch64_stub_hash_lookup(table, string, create, copy) \
2271 ((struct elf_aarch64_stub_hash_entry *) \
2272 bfd_hash_lookup ((table), (string), (create), (copy)))
2274 /* AArch64 ELF linker hash table. */
2275 struct elf_aarch64_link_hash_table
2277 /* The main hash table. */
2278 struct elf_link_hash_table root;
2280 /* Nonzero to force PIC branch veneers. */
2283 /* Fix erratum 835769. */
2284 int fix_erratum_835769;
2286 /* Fix erratum 843419. */
2287 int fix_erratum_843419;
2289 /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */
2290 int fix_erratum_843419_adr;
2292 /* The number of bytes in the initial entry in the PLT. */
2293 bfd_size_type plt_header_size;
2295 /* The number of bytes in the subsequent PLT etries. */
2296 bfd_size_type plt_entry_size;
2298 /* Short-cuts to get to dynamic linker sections. */
2302 /* Small local sym cache. */
2303 struct sym_cache sym_cache;
2305 /* For convenience in allocate_dynrelocs. */
2308 /* The amount of space used by the reserved portion of the sgotplt
2309 section, plus whatever space is used by the jump slots. */
2310 bfd_vma sgotplt_jump_table_size;
2312 /* The stub hash table. */
2313 struct bfd_hash_table stub_hash_table;
2315 /* Linker stub bfd. */
2318 /* Linker call-backs. */
2319 asection *(*add_stub_section) (const char *, asection *);
2320 void (*layout_sections_again) (void);
2322 /* Array to keep track of which stub sections have been created, and
2323 information on stub grouping. */
2326 /* This is the section to which stubs in the group will be
2329 /* The stub section. */
2333 /* Assorted information used by elfNN_aarch64_size_stubs. */
2334 unsigned int bfd_count;
2335 unsigned int top_index;
2336 asection **input_list;
2338 /* The offset into splt of the PLT entry for the TLS descriptor
2339 resolver. Special values are 0, if not necessary (or not found
2340 to be necessary yet), and -1 if needed but not determined
2342 bfd_vma tlsdesc_plt;
2344 /* The GOT offset for the lazy trampoline. Communicated to the
2345 loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
2346 indicates an offset is not allocated. */
2347 bfd_vma dt_tlsdesc_got;
2349 /* Used by local STT_GNU_IFUNC symbols. */
2350 htab_t loc_hash_table;
2351 void * loc_hash_memory;
2354 /* Create an entry in an AArch64 ELF linker hash table. */
2356 static struct bfd_hash_entry *
2357 elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
2358 struct bfd_hash_table *table,
2361 struct elf_aarch64_link_hash_entry *ret =
2362 (struct elf_aarch64_link_hash_entry *) entry;
2364 /* Allocate the structure if it has not already been allocated by a
2367 ret = bfd_hash_allocate (table,
2368 sizeof (struct elf_aarch64_link_hash_entry));
2370 return (struct bfd_hash_entry *) ret;
2372 /* Call the allocation method of the superclass. */
2373 ret = ((struct elf_aarch64_link_hash_entry *)
2374 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2378 ret->dyn_relocs = NULL;
2379 ret->got_type = GOT_UNKNOWN;
2380 ret->plt_got_offset = (bfd_vma) - 1;
2381 ret->stub_cache = NULL;
2382 ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
2385 return (struct bfd_hash_entry *) ret;
2388 /* Initialize an entry in the stub hash table. */
2390 static struct bfd_hash_entry *
2391 stub_hash_newfunc (struct bfd_hash_entry *entry,
2392 struct bfd_hash_table *table, const char *string)
2394 /* Allocate the structure if it has not already been allocated by a
2398 entry = bfd_hash_allocate (table,
2400 elf_aarch64_stub_hash_entry));
2405 /* Call the allocation method of the superclass. */
2406 entry = bfd_hash_newfunc (entry, table, string);
2409 struct elf_aarch64_stub_hash_entry *eh;
2411 /* Initialize the local fields. */
2412 eh = (struct elf_aarch64_stub_hash_entry *) entry;
2413 eh->adrp_offset = 0;
2414 eh->stub_sec = NULL;
2415 eh->stub_offset = 0;
2416 eh->target_value = 0;
2417 eh->target_section = NULL;
2418 eh->stub_type = aarch64_stub_none;
2426 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
2427 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2428 as global symbol. We reuse indx and dynstr_index for local symbol
2429 hash since they aren't used by global symbols in this backend. */
2432 elfNN_aarch64_local_htab_hash (const void *ptr)
2434 struct elf_link_hash_entry *h
2435 = (struct elf_link_hash_entry *) ptr;
2436 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
2439 /* Compare local hash entries. */
2442 elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2)
2444 struct elf_link_hash_entry *h1
2445 = (struct elf_link_hash_entry *) ptr1;
2446 struct elf_link_hash_entry *h2
2447 = (struct elf_link_hash_entry *) ptr2;
2449 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
2452 /* Find and/or create a hash entry for local symbol. */
2454 static struct elf_link_hash_entry *
2455 elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab,
2456 bfd *abfd, const Elf_Internal_Rela *rel,
2459 struct elf_aarch64_link_hash_entry e, *ret;
2460 asection *sec = abfd->sections;
2461 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
2462 ELFNN_R_SYM (rel->r_info));
2465 e.root.indx = sec->id;
2466 e.root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2467 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
2468 create ? INSERT : NO_INSERT);
2475 ret = (struct elf_aarch64_link_hash_entry *) *slot;
2479 ret = (struct elf_aarch64_link_hash_entry *)
2480 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
2481 sizeof (struct elf_aarch64_link_hash_entry));
2484 memset (ret, 0, sizeof (*ret));
2485 ret->root.indx = sec->id;
2486 ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2487 ret->root.dynindx = -1;
2493 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2496 elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info,
2497 struct elf_link_hash_entry *dir,
2498 struct elf_link_hash_entry *ind)
2500 struct elf_aarch64_link_hash_entry *edir, *eind;
2502 edir = (struct elf_aarch64_link_hash_entry *) dir;
2503 eind = (struct elf_aarch64_link_hash_entry *) ind;
2505 if (eind->dyn_relocs != NULL)
2507 if (edir->dyn_relocs != NULL)
2509 struct elf_dyn_relocs **pp;
2510 struct elf_dyn_relocs *p;
2512 /* Add reloc counts against the indirect sym to the direct sym
2513 list. Merge any entries against the same section. */
2514 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2516 struct elf_dyn_relocs *q;
2518 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2519 if (q->sec == p->sec)
2521 q->pc_count += p->pc_count;
2522 q->count += p->count;
2529 *pp = edir->dyn_relocs;
2532 edir->dyn_relocs = eind->dyn_relocs;
2533 eind->dyn_relocs = NULL;
2536 if (ind->root.type == bfd_link_hash_indirect)
2538 /* Copy over PLT info. */
2539 if (dir->got.refcount <= 0)
2541 edir->got_type = eind->got_type;
2542 eind->got_type = GOT_UNKNOWN;
2546 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2549 /* Destroy an AArch64 elf linker hash table. */
2552 elfNN_aarch64_link_hash_table_free (bfd *obfd)
2554 struct elf_aarch64_link_hash_table *ret
2555 = (struct elf_aarch64_link_hash_table *) obfd->link.hash;
2557 if (ret->loc_hash_table)
2558 htab_delete (ret->loc_hash_table);
2559 if (ret->loc_hash_memory)
2560 objalloc_free ((struct objalloc *) ret->loc_hash_memory);
2562 bfd_hash_table_free (&ret->stub_hash_table);
2563 _bfd_elf_link_hash_table_free (obfd);
2566 /* Create an AArch64 elf linker hash table. */
2568 static struct bfd_link_hash_table *
2569 elfNN_aarch64_link_hash_table_create (bfd *abfd)
2571 struct elf_aarch64_link_hash_table *ret;
2572 bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table);
2574 ret = bfd_zmalloc (amt);
2578 if (!_bfd_elf_link_hash_table_init
2579 (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc,
2580 sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA))
2586 ret->plt_header_size = PLT_ENTRY_SIZE;
2587 ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE;
2589 ret->dt_tlsdesc_got = (bfd_vma) - 1;
2591 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
2592 sizeof (struct elf_aarch64_stub_hash_entry)))
2594 _bfd_elf_link_hash_table_free (abfd);
2598 ret->loc_hash_table = htab_try_create (1024,
2599 elfNN_aarch64_local_htab_hash,
2600 elfNN_aarch64_local_htab_eq,
2602 ret->loc_hash_memory = objalloc_create ();
2603 if (!ret->loc_hash_table || !ret->loc_hash_memory)
2605 elfNN_aarch64_link_hash_table_free (abfd);
2608 ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free;
2610 return &ret->root.root;
2614 aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
2615 bfd_vma offset, bfd_vma value)
2617 reloc_howto_type *howto;
2620 howto = elfNN_aarch64_howto_from_type (r_type);
2621 place = (input_section->output_section->vma + input_section->output_offset
2624 r_type = elfNN_aarch64_bfd_reloc_from_type (r_type);
2625 value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE);
2626 return _bfd_aarch64_elf_put_addend (input_bfd,
2627 input_section->contents + offset, r_type,
2631 static enum elf_aarch64_stub_type
2632 aarch64_select_branch_stub (bfd_vma value, bfd_vma place)
2634 if (aarch64_valid_for_adrp_p (value, place))
2635 return aarch64_stub_adrp_branch;
2636 return aarch64_stub_long_branch;
2639 /* Determine the type of stub needed, if any, for a call. */
2641 static enum elf_aarch64_stub_type
2642 aarch64_type_of_stub (asection *input_sec,
2643 const Elf_Internal_Rela *rel,
2645 unsigned char st_type,
2646 bfd_vma destination)
2649 bfd_signed_vma branch_offset;
2650 unsigned int r_type;
2651 enum elf_aarch64_stub_type stub_type = aarch64_stub_none;
2653 if (st_type != STT_FUNC
2654 && (sym_sec == input_sec))
2657 /* Determine where the call point is. */
2658 location = (input_sec->output_offset
2659 + input_sec->output_section->vma + rel->r_offset);
2661 branch_offset = (bfd_signed_vma) (destination - location);
2663 r_type = ELFNN_R_TYPE (rel->r_info);
2665 /* We don't want to redirect any old unconditional jump in this way,
2666 only one which is being used for a sibcall, where it is
2667 acceptable for the IP0 and IP1 registers to be clobbered. */
2668 if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26))
2669 && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET
2670 || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET))
2672 stub_type = aarch64_stub_long_branch;
2678 /* Build a name for an entry in the stub hash table. */
2681 elfNN_aarch64_stub_name (const asection *input_section,
2682 const asection *sym_sec,
2683 const struct elf_aarch64_link_hash_entry *hash,
2684 const Elf_Internal_Rela *rel)
2691 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1;
2692 stub_name = bfd_malloc (len);
2693 if (stub_name != NULL)
2694 snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x",
2695 (unsigned int) input_section->id,
2696 hash->root.root.root.string,
2701 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2702 stub_name = bfd_malloc (len);
2703 if (stub_name != NULL)
2704 snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x",
2705 (unsigned int) input_section->id,
2706 (unsigned int) sym_sec->id,
2707 (unsigned int) ELFNN_R_SYM (rel->r_info),
2714 /* Look up an entry in the stub hash. Stub entries are cached because
2715 creating the stub name takes a bit of time. */
2717 static struct elf_aarch64_stub_hash_entry *
2718 elfNN_aarch64_get_stub_entry (const asection *input_section,
2719 const asection *sym_sec,
2720 struct elf_link_hash_entry *hash,
2721 const Elf_Internal_Rela *rel,
2722 struct elf_aarch64_link_hash_table *htab)
2724 struct elf_aarch64_stub_hash_entry *stub_entry;
2725 struct elf_aarch64_link_hash_entry *h =
2726 (struct elf_aarch64_link_hash_entry *) hash;
2727 const asection *id_sec;
2729 if ((input_section->flags & SEC_CODE) == 0)
2732 /* If this input section is part of a group of sections sharing one
2733 stub section, then use the id of the first section in the group.
2734 Stub names need to include a section id, as there may well be
2735 more than one stub used to reach say, printf, and we need to
2736 distinguish between them. */
2737 id_sec = htab->stub_group[input_section->id].link_sec;
2739 if (h != NULL && h->stub_cache != NULL
2740 && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
2742 stub_entry = h->stub_cache;
2748 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
2749 if (stub_name == NULL)
2752 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
2753 stub_name, FALSE, FALSE);
2755 h->stub_cache = stub_entry;
2764 /* Create a stub section. */
2767 _bfd_aarch64_create_stub_section (asection *section,
2768 struct elf_aarch64_link_hash_table *htab)
2774 namelen = strlen (section->name);
2775 len = namelen + sizeof (STUB_SUFFIX);
2776 s_name = bfd_alloc (htab->stub_bfd, len);
2780 memcpy (s_name, section->name, namelen);
2781 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
2782 return (*htab->add_stub_section) (s_name, section);
2786 /* Find or create a stub section for a link section.
2788 Fix or create the stub section used to collect stubs attached to
2789 the specified link section. */
2792 _bfd_aarch64_get_stub_for_link_section (asection *link_section,
2793 struct elf_aarch64_link_hash_table *htab)
2795 if (htab->stub_group[link_section->id].stub_sec == NULL)
2796 htab->stub_group[link_section->id].stub_sec
2797 = _bfd_aarch64_create_stub_section (link_section, htab);
2798 return htab->stub_group[link_section->id].stub_sec;
2802 /* Find or create a stub section in the stub group for an input
2806 _bfd_aarch64_create_or_find_stub_sec (asection *section,
2807 struct elf_aarch64_link_hash_table *htab)
2809 asection *link_sec = htab->stub_group[section->id].link_sec;
2810 return _bfd_aarch64_get_stub_for_link_section (link_sec, htab);
2814 /* Add a new stub entry in the stub group associated with an input
2815 section to the stub hash. Not all fields of the new stub entry are
2818 static struct elf_aarch64_stub_hash_entry *
2819 _bfd_aarch64_add_stub_entry_in_group (const char *stub_name,
2821 struct elf_aarch64_link_hash_table *htab)
2825 struct elf_aarch64_stub_hash_entry *stub_entry;
2827 link_sec = htab->stub_group[section->id].link_sec;
2828 stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab);
2830 /* Enter this entry into the linker stub hash table. */
2831 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2833 if (stub_entry == NULL)
2835 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
2836 section->owner, stub_name);
2840 stub_entry->stub_sec = stub_sec;
2841 stub_entry->stub_offset = 0;
2842 stub_entry->id_sec = link_sec;
2847 /* Add a new stub entry in the final stub section to the stub hash.
2848 Not all fields of the new stub entry are initialised. */
2850 static struct elf_aarch64_stub_hash_entry *
2851 _bfd_aarch64_add_stub_entry_after (const char *stub_name,
2852 asection *link_section,
2853 struct elf_aarch64_link_hash_table *htab)
2856 struct elf_aarch64_stub_hash_entry *stub_entry;
2858 stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab);
2859 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2861 if (stub_entry == NULL)
2863 (*_bfd_error_handler) (_("cannot create stub entry %s"), stub_name);
2867 stub_entry->stub_sec = stub_sec;
2868 stub_entry->stub_offset = 0;
2869 stub_entry->id_sec = link_section;
2876 aarch64_build_one_stub (struct bfd_hash_entry *gen_entry,
2877 void *in_arg ATTRIBUTE_UNUSED)
2879 struct elf_aarch64_stub_hash_entry *stub_entry;
2884 bfd_vma veneered_insn_loc;
2885 bfd_vma veneer_entry_loc;
2886 bfd_signed_vma branch_offset = 0;
2887 unsigned int template_size;
2888 const uint32_t *template;
2891 /* Massage our args to the form they really have. */
2892 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
2894 stub_sec = stub_entry->stub_sec;
2896 /* Make a note of the offset within the stubs for this entry. */
2897 stub_entry->stub_offset = stub_sec->size;
2898 loc = stub_sec->contents + stub_entry->stub_offset;
2900 stub_bfd = stub_sec->owner;
2902 /* This is the address of the stub destination. */
2903 sym_value = (stub_entry->target_value
2904 + stub_entry->target_section->output_offset
2905 + stub_entry->target_section->output_section->vma);
2907 if (stub_entry->stub_type == aarch64_stub_long_branch)
2909 bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma
2910 + stub_sec->output_offset);
2912 /* See if we can relax the stub. */
2913 if (aarch64_valid_for_adrp_p (sym_value, place))
2914 stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place);
2917 switch (stub_entry->stub_type)
2919 case aarch64_stub_adrp_branch:
2920 template = aarch64_adrp_branch_stub;
2921 template_size = sizeof (aarch64_adrp_branch_stub);
2923 case aarch64_stub_long_branch:
2924 template = aarch64_long_branch_stub;
2925 template_size = sizeof (aarch64_long_branch_stub);
2927 case aarch64_stub_erratum_835769_veneer:
2928 template = aarch64_erratum_835769_stub;
2929 template_size = sizeof (aarch64_erratum_835769_stub);
2931 case aarch64_stub_erratum_843419_veneer:
2932 template = aarch64_erratum_843419_stub;
2933 template_size = sizeof (aarch64_erratum_843419_stub);
2939 for (i = 0; i < (template_size / sizeof template[0]); i++)
2941 bfd_putl32 (template[i], loc);
2945 template_size = (template_size + 7) & ~7;
2946 stub_sec->size += template_size;
2948 switch (stub_entry->stub_type)
2950 case aarch64_stub_adrp_branch:
2951 if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec,
2952 stub_entry->stub_offset, sym_value))
2953 /* The stub would not have been relaxed if the offset was out
2957 if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec,
2958 stub_entry->stub_offset + 4, sym_value))
2962 case aarch64_stub_long_branch:
2963 /* We want the value relative to the address 12 bytes back from the
2965 if (aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec,
2966 stub_entry->stub_offset + 16, sym_value + 12))
2970 case aarch64_stub_erratum_835769_veneer:
2971 veneered_insn_loc = stub_entry->target_section->output_section->vma
2972 + stub_entry->target_section->output_offset
2973 + stub_entry->target_value;
2974 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
2975 + stub_entry->stub_sec->output_offset
2976 + stub_entry->stub_offset;
2977 branch_offset = veneered_insn_loc - veneer_entry_loc;
2978 branch_offset >>= 2;
2979 branch_offset &= 0x3ffffff;
2980 bfd_putl32 (stub_entry->veneered_insn,
2981 stub_sec->contents + stub_entry->stub_offset);
2982 bfd_putl32 (template[1] | branch_offset,
2983 stub_sec->contents + stub_entry->stub_offset + 4);
2986 case aarch64_stub_erratum_843419_veneer:
2987 if (aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec,
2988 stub_entry->stub_offset + 4, sym_value + 4))
2999 /* As above, but don't actually build the stub. Just bump offset so
3000 we know stub section sizes. */
3003 aarch64_size_one_stub (struct bfd_hash_entry *gen_entry,
3004 void *in_arg ATTRIBUTE_UNUSED)
3006 struct elf_aarch64_stub_hash_entry *stub_entry;
3009 /* Massage our args to the form they really have. */
3010 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
3012 switch (stub_entry->stub_type)
3014 case aarch64_stub_adrp_branch:
3015 size = sizeof (aarch64_adrp_branch_stub);
3017 case aarch64_stub_long_branch:
3018 size = sizeof (aarch64_long_branch_stub);
3020 case aarch64_stub_erratum_835769_veneer:
3021 size = sizeof (aarch64_erratum_835769_stub);
3023 case aarch64_stub_erratum_843419_veneer:
3024 size = sizeof (aarch64_erratum_843419_stub);
3030 size = (size + 7) & ~7;
3031 stub_entry->stub_sec->size += size;
3035 /* External entry points for sizing and building linker stubs. */
3037 /* Set up various things so that we can make a list of input sections
3038 for each output section included in the link. Returns -1 on error,
3039 0 when no stubs will be needed, and 1 on success. */
3042 elfNN_aarch64_setup_section_lists (bfd *output_bfd,
3043 struct bfd_link_info *info)
3046 unsigned int bfd_count;
3047 unsigned int top_id, top_index;
3049 asection **input_list, **list;
3051 struct elf_aarch64_link_hash_table *htab =
3052 elf_aarch64_hash_table (info);
3054 if (!is_elf_hash_table (htab))
3057 /* Count the number of input BFDs and find the top input section id. */
3058 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3059 input_bfd != NULL; input_bfd = input_bfd->link.next)
3062 for (section = input_bfd->sections;
3063 section != NULL; section = section->next)
3065 if (top_id < section->id)
3066 top_id = section->id;
3069 htab->bfd_count = bfd_count;
3071 amt = sizeof (struct map_stub) * (top_id + 1);
3072 htab->stub_group = bfd_zmalloc (amt);
3073 if (htab->stub_group == NULL)
3076 /* We can't use output_bfd->section_count here to find the top output
3077 section index as some sections may have been removed, and
3078 _bfd_strip_section_from_output doesn't renumber the indices. */
3079 for (section = output_bfd->sections, top_index = 0;
3080 section != NULL; section = section->next)
3082 if (top_index < section->index)
3083 top_index = section->index;
3086 htab->top_index = top_index;
3087 amt = sizeof (asection *) * (top_index + 1);
3088 input_list = bfd_malloc (amt);
3089 htab->input_list = input_list;
3090 if (input_list == NULL)
3093 /* For sections we aren't interested in, mark their entries with a
3094 value we can check later. */
3095 list = input_list + top_index;
3097 *list = bfd_abs_section_ptr;
3098 while (list-- != input_list);
3100 for (section = output_bfd->sections;
3101 section != NULL; section = section->next)
3103 if ((section->flags & SEC_CODE) != 0)
3104 input_list[section->index] = NULL;
3110 /* Used by elfNN_aarch64_next_input_section and group_sections. */
3111 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3113 /* The linker repeatedly calls this function for each input section,
3114 in the order that input sections are linked into output sections.
3115 Build lists of input sections to determine groupings between which
3116 we may insert linker stubs. */
3119 elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec)
3121 struct elf_aarch64_link_hash_table *htab =
3122 elf_aarch64_hash_table (info);
3124 if (isec->output_section->index <= htab->top_index)
3126 asection **list = htab->input_list + isec->output_section->index;
3128 if (*list != bfd_abs_section_ptr)
3130 /* Steal the link_sec pointer for our list. */
3131 /* This happens to make the list in reverse order,
3132 which is what we want. */
3133 PREV_SEC (isec) = *list;
3139 /* See whether we can group stub sections together. Grouping stub
3140 sections may result in fewer stubs. More importantly, we need to
3141 put all .init* and .fini* stubs at the beginning of the .init or
3142 .fini output sections respectively, because glibc splits the
3143 _init and _fini functions into multiple parts. Putting a stub in
3144 the middle of a function is not a good idea. */
3147 group_sections (struct elf_aarch64_link_hash_table *htab,
3148 bfd_size_type stub_group_size,
3149 bfd_boolean stubs_always_before_branch)
3151 asection **list = htab->input_list + htab->top_index;
3155 asection *tail = *list;
3157 if (tail == bfd_abs_section_ptr)
3160 while (tail != NULL)
3164 bfd_size_type total;
3168 while ((prev = PREV_SEC (curr)) != NULL
3169 && ((total += curr->output_offset - prev->output_offset)
3173 /* OK, the size from the start of CURR to the end is less
3174 than stub_group_size and thus can be handled by one stub
3175 section. (Or the tail section is itself larger than
3176 stub_group_size, in which case we may be toast.)
3177 We should really be keeping track of the total size of
3178 stubs added here, as stubs contribute to the final output
3182 prev = PREV_SEC (tail);
3183 /* Set up this stub group. */
3184 htab->stub_group[tail->id].link_sec = curr;
3186 while (tail != curr && (tail = prev) != NULL);
3188 /* But wait, there's more! Input sections up to stub_group_size
3189 bytes before the stub section can be handled by it too. */
3190 if (!stubs_always_before_branch)
3194 && ((total += tail->output_offset - prev->output_offset)
3198 prev = PREV_SEC (tail);
3199 htab->stub_group[tail->id].link_sec = curr;
3205 while (list-- != htab->input_list);
3207 free (htab->input_list);
3212 #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3214 #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3215 #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3216 #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3217 #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3218 #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3219 #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3221 #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3222 #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3223 #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3224 #define AARCH64_ZR 0x1f
3226 /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3227 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3229 #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3230 #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3231 #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3232 #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3233 #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3234 #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3235 #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3236 #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3237 #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3238 #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3239 #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3240 #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3241 #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3242 #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3243 #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3244 #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3245 #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3246 #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3248 /* Classify an INSN if it is indeed a load/store.
3250 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3252 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3255 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned.
3260 aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2,
3261 bfd_boolean *pair, bfd_boolean *load)
3269 /* Bail out quickly if INSN doesn't fall into the the load-store
3271 if (!AARCH64_LDST (insn))
3276 if (AARCH64_LDST_EX (insn))
3278 *rt = AARCH64_RT (insn);
3280 if (AARCH64_BIT (insn, 21) == 1)
3283 *rt2 = AARCH64_RT2 (insn);
3285 *load = AARCH64_LD (insn);
3288 else if (AARCH64_LDST_NAP (insn)
3289 || AARCH64_LDSTP_PI (insn)
3290 || AARCH64_LDSTP_O (insn)
3291 || AARCH64_LDSTP_PRE (insn))
3294 *rt = AARCH64_RT (insn);
3295 *rt2 = AARCH64_RT2 (insn);
3296 *load = AARCH64_LD (insn);
3299 else if (AARCH64_LDST_PCREL (insn)
3300 || AARCH64_LDST_UI (insn)
3301 || AARCH64_LDST_PIIMM (insn)
3302 || AARCH64_LDST_U (insn)
3303 || AARCH64_LDST_PREIMM (insn)
3304 || AARCH64_LDST_RO (insn)
3305 || AARCH64_LDST_UIMM (insn))
3307 *rt = AARCH64_RT (insn);
3309 if (AARCH64_LDST_PCREL (insn))
3311 opc = AARCH64_BITS (insn, 22, 2);
3312 v = AARCH64_BIT (insn, 26);
3313 opc_v = opc | (v << 2);
3314 *load = (opc_v == 1 || opc_v == 2 || opc_v == 3
3315 || opc_v == 5 || opc_v == 7);
3318 else if (AARCH64_LDST_SIMD_M (insn)
3319 || AARCH64_LDST_SIMD_M_PI (insn))
3321 *rt = AARCH64_RT (insn);
3322 *load = AARCH64_BIT (insn, 22);
3323 opcode = (insn >> 12) & 0xf;
3350 else if (AARCH64_LDST_SIMD_S (insn)
3351 || AARCH64_LDST_SIMD_S_PI (insn))
3353 *rt = AARCH64_RT (insn);
3354 r = (insn >> 21) & 1;
3355 *load = AARCH64_BIT (insn, 22);
3356 opcode = (insn >> 13) & 0x7;
3368 *rt2 = *rt + (r == 0 ? 2 : 3);
3376 *rt2 = *rt + (r == 0 ? 2 : 3);
3388 /* Return TRUE if INSN is multiply-accumulate. */
3391 aarch64_mlxl_p (uint32_t insn)
3393 uint32_t op31 = AARCH64_OP31 (insn);
3395 if (AARCH64_MAC (insn)
3396 && (op31 == 0 || op31 == 1 || op31 == 5)
3397 /* Exclude MUL instructions which are encoded as a multiple accumulate
3399 && AARCH64_RA (insn) != AARCH64_ZR)
3405 /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3406 it is possible for a 64-bit multiply-accumulate instruction to generate an
3407 incorrect result. The details are quite complex and hard to
3408 determine statically, since branches in the code may exist in some
3409 circumstances, but all cases end with a memory (load, store, or
3410 prefetch) instruction followed immediately by the multiply-accumulate
3411 operation. We employ a linker patching technique, by moving the potentially
3412 affected multiply-accumulate instruction into a patch region and replacing
3413 the original instruction with a branch to the patch. This function checks
3414 if INSN_1 is the memory operation followed by a multiply-accumulate
3415 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3416 if INSN_1 and INSN_2 are safe. */
3419 aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2)
3429 if (aarch64_mlxl_p (insn_2)
3430 && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load))
3432 /* Any SIMD memory op is independent of the subsequent MLA
3433 by definition of the erratum. */
3434 if (AARCH64_BIT (insn_1, 26))
3437 /* If not SIMD, check for integer memory ops and MLA relationship. */
3438 rn = AARCH64_RN (insn_2);
3439 ra = AARCH64_RA (insn_2);
3440 rm = AARCH64_RM (insn_2);
3442 /* If this is a load and there's a true(RAW) dependency, we are safe
3443 and this is not an erratum sequence. */
3445 (rt == rn || rt == rm || rt == ra
3446 || (pair && (rt2 == rn || rt2 == rm || rt2 == ra))))
3449 /* We conservatively put out stubs for all other cases (including
3457 /* Used to order a list of mapping symbols by address. */
3460 elf_aarch64_compare_mapping (const void *a, const void *b)
3462 const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a;
3463 const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b;
3465 if (amap->vma > bmap->vma)
3467 else if (amap->vma < bmap->vma)
3469 else if (amap->type > bmap->type)
3470 /* Ensure results do not depend on the host qsort for objects with
3471 multiple mapping symbols at the same address by sorting on type
3474 else if (amap->type < bmap->type)
3482 _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes)
3484 char *stub_name = (char *) bfd_malloc
3485 (strlen ("__erratum_835769_veneer_") + 16);
3486 sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes);
3490 /* Scan for Cortex-A53 erratum 835769 sequence.
3492 Return TRUE else FALSE on abnormal termination. */
3495 _bfd_aarch64_erratum_835769_scan (bfd *input_bfd,
3496 struct bfd_link_info *info,
3497 unsigned int *num_fixes_p)
3500 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3501 unsigned int num_fixes = *num_fixes_p;
3506 for (section = input_bfd->sections;
3508 section = section->next)
3510 bfd_byte *contents = NULL;
3511 struct _aarch64_elf_section_data *sec_data;
3514 if (elf_section_type (section) != SHT_PROGBITS
3515 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
3516 || (section->flags & SEC_EXCLUDE) != 0
3517 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
3518 || (section->output_section == bfd_abs_section_ptr))
3521 if (elf_section_data (section)->this_hdr.contents != NULL)
3522 contents = elf_section_data (section)->this_hdr.contents;
3523 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
3526 sec_data = elf_aarch64_section_data (section);
3528 qsort (sec_data->map, sec_data->mapcount,
3529 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
3531 for (span = 0; span < sec_data->mapcount; span++)
3533 unsigned int span_start = sec_data->map[span].vma;
3534 unsigned int span_end = ((span == sec_data->mapcount - 1)
3535 ? sec_data->map[0].vma + section->size
3536 : sec_data->map[span + 1].vma);
3538 char span_type = sec_data->map[span].type;
3540 if (span_type == 'd')
3543 for (i = span_start; i + 4 < span_end; i += 4)
3545 uint32_t insn_1 = bfd_getl32 (contents + i);
3546 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3548 if (aarch64_erratum_sequence (insn_1, insn_2))
3550 struct elf_aarch64_stub_hash_entry *stub_entry;
3551 char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes);
3555 stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name,
3561 stub_entry->stub_type = aarch64_stub_erratum_835769_veneer;
3562 stub_entry->target_section = section;
3563 stub_entry->target_value = i + 4;
3564 stub_entry->veneered_insn = insn_2;
3565 stub_entry->output_name = stub_name;
3570 if (elf_section_data (section)->this_hdr.contents == NULL)
3574 *num_fixes_p = num_fixes;
3580 /* Test if instruction INSN is ADRP. */
3583 _bfd_aarch64_adrp_p (uint32_t insn)
3585 return ((insn & 0x9f000000) == 0x90000000);
3589 /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
3592 _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2,
3600 return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load)
3603 && AARCH64_LDST_UIMM (insn_3)
3604 && AARCH64_RN (insn_3) == AARCH64_RD (insn_1));
3608 /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
3610 Return TRUE if section CONTENTS at offset I contains one of the
3611 erratum 843419 sequences, otherwise return FALSE. If a sequence is
3612 seen set P_VENEER_I to the offset of the final LOAD/STORE
3613 instruction in the sequence.
3617 _bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma,
3618 bfd_vma i, bfd_vma span_end,
3619 bfd_vma *p_veneer_i)
3621 uint32_t insn_1 = bfd_getl32 (contents + i);
3623 if (!_bfd_aarch64_adrp_p (insn_1))
3626 if (span_end < i + 12)
3629 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3630 uint32_t insn_3 = bfd_getl32 (contents + i + 8);
3632 if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc)
3635 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3))
3637 *p_veneer_i = i + 8;
3641 if (span_end < i + 16)
3644 uint32_t insn_4 = bfd_getl32 (contents + i + 12);
3646 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4))
3648 *p_veneer_i = i + 12;
3656 /* Resize all stub sections. */
3659 _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab)
3663 /* OK, we've added some stubs. Find out the new size of the
3665 for (section = htab->stub_bfd->sections;
3666 section != NULL; section = section->next)
3668 /* Ignore non-stub sections. */
3669 if (!strstr (section->name, STUB_SUFFIX))
3674 bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab);
3676 for (section = htab->stub_bfd->sections;
3677 section != NULL; section = section->next)
3679 if (!strstr (section->name, STUB_SUFFIX))
3685 /* Ensure all stub sections have a size which is a multiple of
3686 4096. This is important in order to ensure that the insertion
3687 of stub sections does not in itself move existing code around
3688 in such a way that new errata sequences are created. */
3689 if (htab->fix_erratum_843419)
3691 section->size = BFD_ALIGN (section->size, 0x1000);
3696 /* Construct an erratum 843419 workaround stub name.
3700 _bfd_aarch64_erratum_843419_stub_name (asection *input_section,
3703 const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1;
3704 char *stub_name = bfd_malloc (len);
3706 if (stub_name != NULL)
3707 snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x",
3708 input_section->owner->id,
3714 /* Build a stub_entry structure describing an 843419 fixup.
3716 The stub_entry constructed is populated with the bit pattern INSN
3717 of the instruction located at OFFSET within input SECTION.
3719 Returns TRUE on success. */
3722 _bfd_aarch64_erratum_843419_fixup (uint32_t insn,
3723 bfd_vma adrp_offset,
3724 bfd_vma ldst_offset,
3726 struct bfd_link_info *info)
3728 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3730 struct elf_aarch64_stub_hash_entry *stub_entry;
3732 stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset);
3733 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3741 /* We always place an 843419 workaround veneer in the stub section
3742 attached to the input section in which an erratum sequence has
3743 been found. This ensures that later in the link process (in
3744 elfNN_aarch64_write_section) when we copy the veneered
3745 instruction from the input section into the stub section the
3746 copied instruction will have had any relocations applied to it.
3747 If we placed workaround veneers in any other stub section then we
3748 could not assume that all relocations have been processed on the
3749 corresponding input section at the point we output the stub
3753 stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab);
3754 if (stub_entry == NULL)
3760 stub_entry->adrp_offset = adrp_offset;
3761 stub_entry->target_value = ldst_offset;
3762 stub_entry->target_section = section;
3763 stub_entry->stub_type = aarch64_stub_erratum_843419_veneer;
3764 stub_entry->veneered_insn = insn;
3765 stub_entry->output_name = stub_name;
3771 /* Scan an input section looking for the signature of erratum 843419.
3773 Scans input SECTION in INPUT_BFD looking for erratum 843419
3774 signatures, for each signature found a stub_entry is created
3775 describing the location of the erratum for subsequent fixup.
3777 Return TRUE on successful scan, FALSE on failure to scan.
3781 _bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section,
3782 struct bfd_link_info *info)
3784 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3789 if (elf_section_type (section) != SHT_PROGBITS
3790 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
3791 || (section->flags & SEC_EXCLUDE) != 0
3792 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
3793 || (section->output_section == bfd_abs_section_ptr))
3798 bfd_byte *contents = NULL;
3799 struct _aarch64_elf_section_data *sec_data;
3802 if (elf_section_data (section)->this_hdr.contents != NULL)
3803 contents = elf_section_data (section)->this_hdr.contents;
3804 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
3807 sec_data = elf_aarch64_section_data (section);
3809 qsort (sec_data->map, sec_data->mapcount,
3810 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
3812 for (span = 0; span < sec_data->mapcount; span++)
3814 unsigned int span_start = sec_data->map[span].vma;
3815 unsigned int span_end = ((span == sec_data->mapcount - 1)
3816 ? sec_data->map[0].vma + section->size
3817 : sec_data->map[span + 1].vma);
3819 char span_type = sec_data->map[span].type;
3821 if (span_type == 'd')
3824 for (i = span_start; i + 8 < span_end; i += 4)
3826 bfd_vma vma = (section->output_section->vma
3827 + section->output_offset
3831 if (_bfd_aarch64_erratum_843419_p
3832 (contents, vma, i, span_end, &veneer_i))
3834 uint32_t insn = bfd_getl32 (contents + veneer_i);
3836 if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i,
3843 if (elf_section_data (section)->this_hdr.contents == NULL)
3852 /* Determine and set the size of the stub section for a final link.
3854 The basic idea here is to examine all the relocations looking for
3855 PC-relative calls to a target that is unreachable with a "bl"
3859 elfNN_aarch64_size_stubs (bfd *output_bfd,
3861 struct bfd_link_info *info,
3862 bfd_signed_vma group_size,
3863 asection * (*add_stub_section) (const char *,
3865 void (*layout_sections_again) (void))
3867 bfd_size_type stub_group_size;
3868 bfd_boolean stubs_always_before_branch;
3869 bfd_boolean stub_changed = FALSE;
3870 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3871 unsigned int num_erratum_835769_fixes = 0;
3873 /* Propagate mach to stub bfd, because it may not have been
3874 finalized when we created stub_bfd. */
3875 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
3876 bfd_get_mach (output_bfd));
3878 /* Stash our params away. */
3879 htab->stub_bfd = stub_bfd;
3880 htab->add_stub_section = add_stub_section;
3881 htab->layout_sections_again = layout_sections_again;
3882 stubs_always_before_branch = group_size < 0;
3884 stub_group_size = -group_size;
3886 stub_group_size = group_size;
3888 if (stub_group_size == 1)
3890 /* Default values. */
3891 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
3892 stub_group_size = 127 * 1024 * 1024;
3895 group_sections (htab, stub_group_size, stubs_always_before_branch);
3897 (*htab->layout_sections_again) ();
3899 if (htab->fix_erratum_835769)
3903 for (input_bfd = info->input_bfds;
3904 input_bfd != NULL; input_bfd = input_bfd->link.next)
3905 if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info,
3906 &num_erratum_835769_fixes))
3909 _bfd_aarch64_resize_stubs (htab);
3910 (*htab->layout_sections_again) ();
3913 if (htab->fix_erratum_843419)
3917 for (input_bfd = info->input_bfds;
3919 input_bfd = input_bfd->link.next)
3923 for (section = input_bfd->sections;
3925 section = section->next)
3926 if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info))
3930 _bfd_aarch64_resize_stubs (htab);
3931 (*htab->layout_sections_again) ();
3938 for (input_bfd = info->input_bfds;
3939 input_bfd != NULL; input_bfd = input_bfd->link.next)
3941 Elf_Internal_Shdr *symtab_hdr;
3943 Elf_Internal_Sym *local_syms = NULL;
3945 /* We'll need the symbol table in a second. */
3946 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3947 if (symtab_hdr->sh_info == 0)
3950 /* Walk over each section attached to the input bfd. */
3951 for (section = input_bfd->sections;
3952 section != NULL; section = section->next)
3954 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
3956 /* If there aren't any relocs, then there's nothing more
3958 if ((section->flags & SEC_RELOC) == 0
3959 || section->reloc_count == 0
3960 || (section->flags & SEC_CODE) == 0)
3963 /* If this section is a link-once section that will be
3964 discarded, then don't create any stubs. */
3965 if (section->output_section == NULL
3966 || section->output_section->owner != output_bfd)
3969 /* Get the relocs. */
3971 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
3972 NULL, info->keep_memory);
3973 if (internal_relocs == NULL)
3974 goto error_ret_free_local;
3976 /* Now examine each relocation. */
3977 irela = internal_relocs;
3978 irelaend = irela + section->reloc_count;
3979 for (; irela < irelaend; irela++)
3981 unsigned int r_type, r_indx;
3982 enum elf_aarch64_stub_type stub_type;
3983 struct elf_aarch64_stub_hash_entry *stub_entry;
3986 bfd_vma destination;
3987 struct elf_aarch64_link_hash_entry *hash;
3988 const char *sym_name;
3990 const asection *id_sec;
3991 unsigned char st_type;
3994 r_type = ELFNN_R_TYPE (irela->r_info);
3995 r_indx = ELFNN_R_SYM (irela->r_info);
3997 if (r_type >= (unsigned int) R_AARCH64_end)
3999 bfd_set_error (bfd_error_bad_value);
4000 error_ret_free_internal:
4001 if (elf_section_data (section)->relocs == NULL)
4002 free (internal_relocs);
4003 goto error_ret_free_local;
4006 /* Only look for stubs on unconditional branch and
4007 branch and link instructions. */
4008 if (r_type != (unsigned int) AARCH64_R (CALL26)
4009 && r_type != (unsigned int) AARCH64_R (JUMP26))
4012 /* Now determine the call target, its name, value,
4019 if (r_indx < symtab_hdr->sh_info)
4021 /* It's a local symbol. */
4022 Elf_Internal_Sym *sym;
4023 Elf_Internal_Shdr *hdr;
4025 if (local_syms == NULL)
4028 = (Elf_Internal_Sym *) symtab_hdr->contents;
4029 if (local_syms == NULL)
4031 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4032 symtab_hdr->sh_info, 0,
4034 if (local_syms == NULL)
4035 goto error_ret_free_internal;
4038 sym = local_syms + r_indx;
4039 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4040 sym_sec = hdr->bfd_section;
4042 /* This is an undefined symbol. It can never
4046 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4047 sym_value = sym->st_value;
4048 destination = (sym_value + irela->r_addend
4049 + sym_sec->output_offset
4050 + sym_sec->output_section->vma);
4051 st_type = ELF_ST_TYPE (sym->st_info);
4053 = bfd_elf_string_from_elf_section (input_bfd,
4054 symtab_hdr->sh_link,
4061 e_indx = r_indx - symtab_hdr->sh_info;
4062 hash = ((struct elf_aarch64_link_hash_entry *)
4063 elf_sym_hashes (input_bfd)[e_indx]);
4065 while (hash->root.root.type == bfd_link_hash_indirect
4066 || hash->root.root.type == bfd_link_hash_warning)
4067 hash = ((struct elf_aarch64_link_hash_entry *)
4068 hash->root.root.u.i.link);
4070 if (hash->root.root.type == bfd_link_hash_defined
4071 || hash->root.root.type == bfd_link_hash_defweak)
4073 struct elf_aarch64_link_hash_table *globals =
4074 elf_aarch64_hash_table (info);
4075 sym_sec = hash->root.root.u.def.section;
4076 sym_value = hash->root.root.u.def.value;
4077 /* For a destination in a shared library,
4078 use the PLT stub as target address to
4079 decide whether a branch stub is
4081 if (globals->root.splt != NULL && hash != NULL
4082 && hash->root.plt.offset != (bfd_vma) - 1)
4084 sym_sec = globals->root.splt;
4085 sym_value = hash->root.plt.offset;
4086 if (sym_sec->output_section != NULL)
4087 destination = (sym_value
4088 + sym_sec->output_offset
4090 sym_sec->output_section->vma);
4092 else if (sym_sec->output_section != NULL)
4093 destination = (sym_value + irela->r_addend
4094 + sym_sec->output_offset
4095 + sym_sec->output_section->vma);
4097 else if (hash->root.root.type == bfd_link_hash_undefined
4098 || (hash->root.root.type
4099 == bfd_link_hash_undefweak))
4101 /* For a shared library, use the PLT stub as
4102 target address to decide whether a long
4103 branch stub is needed.
4104 For absolute code, they cannot be handled. */
4105 struct elf_aarch64_link_hash_table *globals =
4106 elf_aarch64_hash_table (info);
4108 if (globals->root.splt != NULL && hash != NULL
4109 && hash->root.plt.offset != (bfd_vma) - 1)
4111 sym_sec = globals->root.splt;
4112 sym_value = hash->root.plt.offset;
4113 if (sym_sec->output_section != NULL)
4114 destination = (sym_value
4115 + sym_sec->output_offset
4117 sym_sec->output_section->vma);
4124 bfd_set_error (bfd_error_bad_value);
4125 goto error_ret_free_internal;
4127 st_type = ELF_ST_TYPE (hash->root.type);
4128 sym_name = hash->root.root.root.string;
4131 /* Determine what (if any) linker stub is needed. */
4132 stub_type = aarch64_type_of_stub (section, irela, sym_sec,
4133 st_type, destination);
4134 if (stub_type == aarch64_stub_none)
4137 /* Support for grouping stub sections. */
4138 id_sec = htab->stub_group[section->id].link_sec;
4140 /* Get the name of this stub. */
4141 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash,
4144 goto error_ret_free_internal;
4147 aarch64_stub_hash_lookup (&htab->stub_hash_table,
4148 stub_name, FALSE, FALSE);
4149 if (stub_entry != NULL)
4151 /* The proper stub has already been created. */
4156 stub_entry = _bfd_aarch64_add_stub_entry_in_group
4157 (stub_name, section, htab);
4158 if (stub_entry == NULL)
4161 goto error_ret_free_internal;
4164 stub_entry->target_value = sym_value + irela->r_addend;
4165 stub_entry->target_section = sym_sec;
4166 stub_entry->stub_type = stub_type;
4167 stub_entry->h = hash;
4168 stub_entry->st_type = st_type;
4170 if (sym_name == NULL)
4171 sym_name = "unnamed";
4172 len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name);
4173 stub_entry->output_name = bfd_alloc (htab->stub_bfd, len);
4174 if (stub_entry->output_name == NULL)
4177 goto error_ret_free_internal;
4180 snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME,
4183 stub_changed = TRUE;
4186 /* We're done with the internal relocs, free them. */
4187 if (elf_section_data (section)->relocs == NULL)
4188 free (internal_relocs);
4195 _bfd_aarch64_resize_stubs (htab);
4197 /* Ask the linker to do its stuff. */
4198 (*htab->layout_sections_again) ();
4199 stub_changed = FALSE;
4204 error_ret_free_local:
4208 /* Build all the stubs associated with the current output file. The
4209 stubs are kept in a hash table attached to the main linker hash
4210 table. We also set up the .plt entries for statically linked PIC
4211 functions here. This function is called via aarch64_elf_finish in the
4215 elfNN_aarch64_build_stubs (struct bfd_link_info *info)
4218 struct bfd_hash_table *table;
4219 struct elf_aarch64_link_hash_table *htab;
4221 htab = elf_aarch64_hash_table (info);
4223 for (stub_sec = htab->stub_bfd->sections;
4224 stub_sec != NULL; stub_sec = stub_sec->next)
4228 /* Ignore non-stub sections. */
4229 if (!strstr (stub_sec->name, STUB_SUFFIX))
4232 /* Allocate memory to hold the linker stubs. */
4233 size = stub_sec->size;
4234 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4235 if (stub_sec->contents == NULL && size != 0)
4239 bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents);
4240 stub_sec->size += 4;
4243 /* Build the stubs as directed by the stub hash table. */
4244 table = &htab->stub_hash_table;
4245 bfd_hash_traverse (table, aarch64_build_one_stub, info);
4251 /* Add an entry to the code/data map for section SEC. */
4254 elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma)
4256 struct _aarch64_elf_section_data *sec_data =
4257 elf_aarch64_section_data (sec);
4258 unsigned int newidx;
4260 if (sec_data->map == NULL)
4262 sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map));
4263 sec_data->mapcount = 0;
4264 sec_data->mapsize = 1;
4267 newidx = sec_data->mapcount++;
4269 if (sec_data->mapcount > sec_data->mapsize)
4271 sec_data->mapsize *= 2;
4272 sec_data->map = bfd_realloc_or_free
4273 (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map));
4278 sec_data->map[newidx].vma = vma;
4279 sec_data->map[newidx].type = type;
4284 /* Initialise maps of insn/data for input BFDs. */
4286 bfd_elfNN_aarch64_init_maps (bfd *abfd)
4288 Elf_Internal_Sym *isymbuf;
4289 Elf_Internal_Shdr *hdr;
4290 unsigned int i, localsyms;
4292 /* Make sure that we are dealing with an AArch64 elf binary. */
4293 if (!is_aarch64_elf (abfd))
4296 if ((abfd->flags & DYNAMIC) != 0)
4299 hdr = &elf_symtab_hdr (abfd);
4300 localsyms = hdr->sh_info;
4302 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4303 should contain the number of local symbols, which should come before any
4304 global symbols. Mapping symbols are always local. */
4305 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL);
4307 /* No internal symbols read? Skip this BFD. */
4308 if (isymbuf == NULL)
4311 for (i = 0; i < localsyms; i++)
4313 Elf_Internal_Sym *isym = &isymbuf[i];
4314 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4317 if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4319 name = bfd_elf_string_from_elf_section (abfd,
4323 if (bfd_is_aarch64_special_symbol_name
4324 (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP))
4325 elfNN_aarch64_section_map_add (sec, name[1], isym->st_value);
4330 /* Set option values needed during linking. */
4332 bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
4333 struct bfd_link_info *link_info,
4335 int no_wchar_warn, int pic_veneer,
4336 int fix_erratum_835769,
4337 int fix_erratum_843419)
4339 struct elf_aarch64_link_hash_table *globals;
4341 globals = elf_aarch64_hash_table (link_info);
4342 globals->pic_veneer = pic_veneer;
4343 globals->fix_erratum_835769 = fix_erratum_835769;
4344 globals->fix_erratum_843419 = fix_erratum_843419;
4345 globals->fix_erratum_843419_adr = TRUE;
4347 BFD_ASSERT (is_aarch64_elf (output_bfd));
4348 elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
4349 elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
4353 aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h,
4354 struct elf_aarch64_link_hash_table
4355 *globals, struct bfd_link_info *info,
4356 bfd_vma value, bfd *output_bfd,
4357 bfd_boolean *unresolved_reloc_p)
4359 bfd_vma off = (bfd_vma) - 1;
4360 asection *basegot = globals->root.sgot;
4361 bfd_boolean dyn = globals->root.dynamic_sections_created;
4365 BFD_ASSERT (basegot != NULL);
4366 off = h->got.offset;
4367 BFD_ASSERT (off != (bfd_vma) - 1);
4368 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4369 || (bfd_link_pic (info)
4370 && SYMBOL_REFERENCES_LOCAL (info, h))
4371 || (ELF_ST_VISIBILITY (h->other)
4372 && h->root.type == bfd_link_hash_undefweak))
4374 /* This is actually a static link, or it is a -Bsymbolic link
4375 and the symbol is defined locally. We must initialize this
4376 entry in the global offset table. Since the offset must
4377 always be a multiple of 8 (4 in the case of ILP32), we use
4378 the least significant bit to record whether we have
4379 initialized it already.
4380 When doing a dynamic link, we create a .rel(a).got relocation
4381 entry to initialize the value. This is done in the
4382 finish_dynamic_symbol routine. */
4387 bfd_put_NN (output_bfd, value, basegot->contents + off);
4392 *unresolved_reloc_p = FALSE;
4394 off = off + basegot->output_section->vma + basegot->output_offset;
4400 /* Change R_TYPE to a more efficient access model where possible,
4401 return the new reloc type. */
4403 static bfd_reloc_code_real_type
4404 aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type,
4405 struct elf_link_hash_entry *h)
4407 bfd_boolean is_local = h == NULL;
4411 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
4412 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
4414 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4415 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
4417 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
4419 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4422 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
4424 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4425 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4427 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4429 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4430 : BFD_RELOC_AARCH64_NONE);
4432 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4434 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4435 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
4437 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
4439 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4440 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
4442 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
4443 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
4445 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4446 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC);
4448 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
4449 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type;
4451 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
4452 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type;
4454 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
4457 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
4459 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4460 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4462 case BFD_RELOC_AARCH64_TLSDESC_ADD:
4463 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
4464 case BFD_RELOC_AARCH64_TLSDESC_CALL:
4465 /* Instructions with these relocations will become NOPs. */
4466 return BFD_RELOC_AARCH64_NONE;
4468 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
4469 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
4470 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
4471 return is_local ? BFD_RELOC_AARCH64_NONE : r_type;
4474 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
4476 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4477 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
4479 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
4481 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4482 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
4493 aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
4497 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
4498 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
4499 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
4500 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
4501 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
4502 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
4503 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
4504 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
4505 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
4508 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
4509 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
4510 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
4511 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
4512 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
4513 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
4514 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
4515 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
4518 case BFD_RELOC_AARCH64_TLSDESC_ADD:
4519 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
4520 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
4521 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
4522 case BFD_RELOC_AARCH64_TLSDESC_CALL:
4523 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
4524 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
4525 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
4526 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4527 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4528 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
4529 return GOT_TLSDESC_GD;
4531 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
4532 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
4533 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
4534 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
4535 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
4536 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
4546 aarch64_can_relax_tls (bfd *input_bfd,
4547 struct bfd_link_info *info,
4548 bfd_reloc_code_real_type r_type,
4549 struct elf_link_hash_entry *h,
4550 unsigned long r_symndx)
4552 unsigned int symbol_got_type;
4553 unsigned int reloc_got_type;
4555 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type))
4558 symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx);
4559 reloc_got_type = aarch64_reloc_got_type (r_type);
4561 if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type))
4564 if (bfd_link_pic (info))
4567 if (h && h->root.type == bfd_link_hash_undefweak)
4573 /* Given the relocation code R_TYPE, return the relaxed bfd reloc
4576 static bfd_reloc_code_real_type
4577 aarch64_tls_transition (bfd *input_bfd,
4578 struct bfd_link_info *info,
4579 unsigned int r_type,
4580 struct elf_link_hash_entry *h,
4581 unsigned long r_symndx)
4583 bfd_reloc_code_real_type bfd_r_type
4584 = elfNN_aarch64_bfd_reloc_from_type (r_type);
4586 if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx))
4589 return aarch64_tls_transition_without_check (bfd_r_type, h);
4592 /* Return the base VMA address which should be subtracted from real addresses
4593 when resolving R_AARCH64_TLS_DTPREL relocation. */
4596 dtpoff_base (struct bfd_link_info *info)
4598 /* If tls_sec is NULL, we should have signalled an error already. */
4599 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
4600 return elf_hash_table (info)->tls_sec->vma;
4603 /* Return the base VMA address which should be subtracted from real addresses
4604 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
4607 tpoff_base (struct bfd_link_info *info)
4609 struct elf_link_hash_table *htab = elf_hash_table (info);
4611 /* If tls_sec is NULL, we should have signalled an error already. */
4612 BFD_ASSERT (htab->tls_sec != NULL);
4614 bfd_vma base = align_power ((bfd_vma) TCB_SIZE,
4615 htab->tls_sec->alignment_power);
4616 return htab->tls_sec->vma - base;
4620 symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4621 unsigned long r_symndx)
4623 /* Calculate the address of the GOT entry for symbol
4624 referred to in h. */
4626 return &h->got.offset;
4630 struct elf_aarch64_local_symbol *l;
4632 l = elf_aarch64_locals (input_bfd);
4633 return &l[r_symndx].got_offset;
4638 symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4639 unsigned long r_symndx)
4642 p = symbol_got_offset_ref (input_bfd, h, r_symndx);
4647 symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h,
4648 unsigned long r_symndx)
4651 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4656 symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4657 unsigned long r_symndx)
4660 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4666 symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4667 unsigned long r_symndx)
4669 /* Calculate the address of the GOT entry for symbol
4670 referred to in h. */
4673 struct elf_aarch64_link_hash_entry *eh;
4674 eh = (struct elf_aarch64_link_hash_entry *) h;
4675 return &eh->tlsdesc_got_jump_table_offset;
4680 struct elf_aarch64_local_symbol *l;
4682 l = elf_aarch64_locals (input_bfd);
4683 return &l[r_symndx].tlsdesc_got_jump_table_offset;
4688 symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4689 unsigned long r_symndx)
4692 p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4697 symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd,
4698 struct elf_link_hash_entry *h,
4699 unsigned long r_symndx)
4702 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4707 symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4708 unsigned long r_symndx)
4711 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4716 /* Data for make_branch_to_erratum_835769_stub(). */
4718 struct erratum_835769_branch_to_stub_data
4720 struct bfd_link_info *info;
4721 asection *output_section;
4725 /* Helper to insert branches to erratum 835769 stubs in the right
4726 places for a particular section. */
4729 make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry,
4732 struct elf_aarch64_stub_hash_entry *stub_entry;
4733 struct erratum_835769_branch_to_stub_data *data;
4735 unsigned long branch_insn = 0;
4736 bfd_vma veneered_insn_loc, veneer_entry_loc;
4737 bfd_signed_vma branch_offset;
4738 unsigned int target;
4741 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
4742 data = (struct erratum_835769_branch_to_stub_data *) in_arg;
4744 if (stub_entry->target_section != data->output_section
4745 || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer)
4748 contents = data->contents;
4749 veneered_insn_loc = stub_entry->target_section->output_section->vma
4750 + stub_entry->target_section->output_offset
4751 + stub_entry->target_value;
4752 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
4753 + stub_entry->stub_sec->output_offset
4754 + stub_entry->stub_offset;
4755 branch_offset = veneer_entry_loc - veneered_insn_loc;
4757 abfd = stub_entry->target_section->owner;
4758 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4759 (*_bfd_error_handler)
4760 (_("%B: error: Erratum 835769 stub out "
4761 "of range (input file too large)"), abfd);
4763 target = stub_entry->target_value;
4764 branch_insn = 0x14000000;
4765 branch_offset >>= 2;
4766 branch_offset &= 0x3ffffff;
4767 branch_insn |= branch_offset;
4768 bfd_putl32 (branch_insn, &contents[target]);
4775 _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry,
4778 struct elf_aarch64_stub_hash_entry *stub_entry
4779 = (struct elf_aarch64_stub_hash_entry *) gen_entry;
4780 struct erratum_835769_branch_to_stub_data *data
4781 = (struct erratum_835769_branch_to_stub_data *) in_arg;
4782 struct bfd_link_info *info;
4783 struct elf_aarch64_link_hash_table *htab;
4791 contents = data->contents;
4792 section = data->output_section;
4794 htab = elf_aarch64_hash_table (info);
4796 if (stub_entry->target_section != section
4797 || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer)
4800 insn = bfd_getl32 (contents + stub_entry->target_value);
4802 stub_entry->stub_sec->contents + stub_entry->stub_offset);
4804 place = (section->output_section->vma + section->output_offset
4805 + stub_entry->adrp_offset);
4806 insn = bfd_getl32 (contents + stub_entry->adrp_offset);
4808 if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP)
4811 bfd_signed_vma imm =
4812 (_bfd_aarch64_sign_extend
4813 ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33)
4816 if (htab->fix_erratum_843419_adr
4817 && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM))
4819 insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm)
4820 | AARCH64_RT (insn));
4821 bfd_putl32 (insn, contents + stub_entry->adrp_offset);
4825 bfd_vma veneered_insn_loc;
4826 bfd_vma veneer_entry_loc;
4827 bfd_signed_vma branch_offset;
4828 uint32_t branch_insn;
4830 veneered_insn_loc = stub_entry->target_section->output_section->vma
4831 + stub_entry->target_section->output_offset
4832 + stub_entry->target_value;
4833 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
4834 + stub_entry->stub_sec->output_offset
4835 + stub_entry->stub_offset;
4836 branch_offset = veneer_entry_loc - veneered_insn_loc;
4838 abfd = stub_entry->target_section->owner;
4839 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4840 (*_bfd_error_handler)
4841 (_("%B: error: Erratum 843419 stub out "
4842 "of range (input file too large)"), abfd);
4844 branch_insn = 0x14000000;
4845 branch_offset >>= 2;
4846 branch_offset &= 0x3ffffff;
4847 branch_insn |= branch_offset;
4848 bfd_putl32 (branch_insn, contents + stub_entry->target_value);
4855 elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED,
4856 struct bfd_link_info *link_info,
4861 struct elf_aarch64_link_hash_table *globals =
4862 elf_aarch64_hash_table (link_info);
4864 if (globals == NULL)
4867 /* Fix code to point to erratum 835769 stubs. */
4868 if (globals->fix_erratum_835769)
4870 struct erratum_835769_branch_to_stub_data data;
4872 data.info = link_info;
4873 data.output_section = sec;
4874 data.contents = contents;
4875 bfd_hash_traverse (&globals->stub_hash_table,
4876 make_branch_to_erratum_835769_stub, &data);
4879 if (globals->fix_erratum_843419)
4881 struct erratum_835769_branch_to_stub_data data;
4883 data.info = link_info;
4884 data.output_section = sec;
4885 data.contents = contents;
4886 bfd_hash_traverse (&globals->stub_hash_table,
4887 _bfd_aarch64_erratum_843419_branch_to_stub, &data);
4893 /* Perform a relocation as part of a final link. */
4894 static bfd_reloc_status_type
4895 elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
4898 asection *input_section,
4900 Elf_Internal_Rela *rel,
4902 struct bfd_link_info *info,
4904 struct elf_link_hash_entry *h,
4905 bfd_boolean *unresolved_reloc_p,
4906 bfd_boolean save_addend,
4907 bfd_vma *saved_addend,
4908 Elf_Internal_Sym *sym)
4910 Elf_Internal_Shdr *symtab_hdr;
4911 unsigned int r_type = howto->type;
4912 bfd_reloc_code_real_type bfd_r_type
4913 = elfNN_aarch64_bfd_reloc_from_howto (howto);
4914 bfd_reloc_code_real_type new_bfd_r_type;
4915 unsigned long r_symndx;
4916 bfd_byte *hit_data = contents + rel->r_offset;
4918 bfd_signed_vma signed_addend;
4919 struct elf_aarch64_link_hash_table *globals;
4920 bfd_boolean weak_undef_p;
4923 globals = elf_aarch64_hash_table (info);
4925 symtab_hdr = &elf_symtab_hdr (input_bfd);
4927 BFD_ASSERT (is_aarch64_elf (input_bfd));
4929 r_symndx = ELFNN_R_SYM (rel->r_info);
4931 /* It is possible to have linker relaxations on some TLS access
4932 models. Update our information here. */
4933 new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx);
4934 if (new_bfd_r_type != bfd_r_type)
4936 bfd_r_type = new_bfd_r_type;
4937 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
4938 BFD_ASSERT (howto != NULL);
4939 r_type = howto->type;
4942 place = input_section->output_section->vma
4943 + input_section->output_offset + rel->r_offset;
4945 /* Get addend, accumulating the addend for consecutive relocs
4946 which refer to the same offset. */
4947 signed_addend = saved_addend ? *saved_addend : 0;
4948 signed_addend += rel->r_addend;
4950 weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
4951 : bfd_is_und_section (sym_sec));
4953 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
4954 it here if it is defined in a non-shared object. */
4956 && h->type == STT_GNU_IFUNC
4963 if ((input_section->flags & SEC_ALLOC) == 0
4964 || h->plt.offset == (bfd_vma) -1)
4967 /* STT_GNU_IFUNC symbol must go through PLT. */
4968 plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
4969 value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
4974 if (h->root.root.string)
4975 name = h->root.root.string;
4977 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4979 (*_bfd_error_handler)
4980 (_("%B: relocation %s against STT_GNU_IFUNC "
4981 "symbol `%s' isn't handled by %s"), input_bfd,
4982 howto->name, name, __FUNCTION__);
4983 bfd_set_error (bfd_error_bad_value);
4986 case BFD_RELOC_AARCH64_NN:
4987 if (rel->r_addend != 0)
4989 if (h->root.root.string)
4990 name = h->root.root.string;
4992 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
4994 (*_bfd_error_handler)
4995 (_("%B: relocation %s against STT_GNU_IFUNC "
4996 "symbol `%s' has non-zero addend: %d"),
4997 input_bfd, howto->name, name, rel->r_addend);
4998 bfd_set_error (bfd_error_bad_value);
5002 /* Generate dynamic relocation only when there is a
5003 non-GOT reference in a shared object. */
5004 if (bfd_link_pic (info) && h->non_got_ref)
5006 Elf_Internal_Rela outrel;
5009 /* Need a dynamic relocation to get the real function
5011 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
5015 if (outrel.r_offset == (bfd_vma) -1
5016 || outrel.r_offset == (bfd_vma) -2)
5019 outrel.r_offset += (input_section->output_section->vma
5020 + input_section->output_offset);
5022 if (h->dynindx == -1
5024 || bfd_link_executable (info))
5026 /* This symbol is resolved locally. */
5027 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
5028 outrel.r_addend = (h->root.u.def.value
5029 + h->root.u.def.section->output_section->vma
5030 + h->root.u.def.section->output_offset);
5034 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5035 outrel.r_addend = 0;
5038 sreloc = globals->root.irelifunc;
5039 elf_append_rela (output_bfd, sreloc, &outrel);
5041 /* If this reloc is against an external symbol, we
5042 do not want to fiddle with the addend. Otherwise,
5043 we need to include the symbol value so that it
5044 becomes an addend for the dynamic reloc. For an
5045 internal symbol, we have updated addend. */
5046 return bfd_reloc_ok;
5049 case BFD_RELOC_AARCH64_CALL26:
5050 case BFD_RELOC_AARCH64_JUMP26:
5051 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5054 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5056 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5057 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
5058 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
5059 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
5060 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
5061 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5062 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
5063 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5064 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
5065 base_got = globals->root.sgot;
5066 off = h->got.offset;
5068 if (base_got == NULL)
5071 if (off == (bfd_vma) -1)
5075 /* We can't use h->got.offset here to save state, or
5076 even just remember the offset, as finish_dynamic_symbol
5077 would use that as offset into .got. */
5079 if (globals->root.splt != NULL)
5081 plt_index = ((h->plt.offset - globals->plt_header_size) /
5082 globals->plt_entry_size);
5083 off = (plt_index + 3) * GOT_ENTRY_SIZE;
5084 base_got = globals->root.sgotplt;
5088 plt_index = h->plt.offset / globals->plt_entry_size;
5089 off = plt_index * GOT_ENTRY_SIZE;
5090 base_got = globals->root.igotplt;
5093 if (h->dynindx == -1
5097 /* This references the local definition. We must
5098 initialize this entry in the global offset table.
5099 Since the offset must always be a multiple of 8,
5100 we use the least significant bit to record
5101 whether we have initialized it already.
5103 When doing a dynamic link, we create a .rela.got
5104 relocation entry to initialize the value. This
5105 is done in the finish_dynamic_symbol routine. */
5110 bfd_put_NN (output_bfd, value,
5111 base_got->contents + off);
5112 /* Note that this is harmless as -1 | 1 still is -1. */
5116 value = (base_got->output_section->vma
5117 + base_got->output_offset + off);
5120 value = aarch64_calculate_got_entry_vma (h, globals, info,
5122 unresolved_reloc_p);
5126 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
5127 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
5128 addend = (globals->root.sgot->output_section->vma
5129 + globals->root.sgot->output_offset);
5131 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5132 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
5133 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5134 value = (value - globals->root.sgot->output_section->vma
5135 - globals->root.sgot->output_offset);
5140 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5141 addend, weak_undef_p);
5142 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
5143 case BFD_RELOC_AARCH64_ADD_LO12:
5144 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5151 case BFD_RELOC_AARCH64_NONE:
5152 case BFD_RELOC_AARCH64_TLSDESC_ADD:
5153 case BFD_RELOC_AARCH64_TLSDESC_CALL:
5154 case BFD_RELOC_AARCH64_TLSDESC_LDR:
5155 *unresolved_reloc_p = FALSE;
5156 return bfd_reloc_ok;
5158 case BFD_RELOC_AARCH64_NN:
5160 /* When generating a shared object or relocatable executable, these
5161 relocations are copied into the output file to be resolved at
5163 if (((bfd_link_pic (info) == TRUE)
5164 || globals->root.is_relocatable_executable)
5165 && (input_section->flags & SEC_ALLOC)
5167 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5168 || h->root.type != bfd_link_hash_undefweak))
5170 Elf_Internal_Rela outrel;
5172 bfd_boolean skip, relocate;
5175 *unresolved_reloc_p = FALSE;
5180 outrel.r_addend = signed_addend;
5182 _bfd_elf_section_offset (output_bfd, info, input_section,
5184 if (outrel.r_offset == (bfd_vma) - 1)
5186 else if (outrel.r_offset == (bfd_vma) - 2)
5192 outrel.r_offset += (input_section->output_section->vma
5193 + input_section->output_offset);
5196 memset (&outrel, 0, sizeof outrel);
5199 && (!bfd_link_pic (info)
5200 || !SYMBOLIC_BIND (info, h)
5201 || !h->def_regular))
5202 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5207 /* On SVR4-ish systems, the dynamic loader cannot
5208 relocate the text and data segments independently,
5209 so the symbol does not matter. */
5211 outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE));
5212 outrel.r_addend += value;
5215 sreloc = elf_section_data (input_section)->sreloc;
5216 if (sreloc == NULL || sreloc->contents == NULL)
5217 return bfd_reloc_notsupported;
5219 loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
5220 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
5222 if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
5224 /* Sanity to check that we have previously allocated
5225 sufficient space in the relocation section for the
5226 number of relocations we actually want to emit. */
5230 /* If this reloc is against an external symbol, we do not want to
5231 fiddle with the addend. Otherwise, we need to include the symbol
5232 value so that it becomes an addend for the dynamic reloc. */
5234 return bfd_reloc_ok;
5236 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5237 contents, rel->r_offset, value,
5241 value += signed_addend;
5244 case BFD_RELOC_AARCH64_CALL26:
5245 case BFD_RELOC_AARCH64_JUMP26:
5247 asection *splt = globals->root.splt;
5248 bfd_boolean via_plt_p =
5249 splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
5251 /* A call to an undefined weak symbol is converted to a jump to
5252 the next instruction unless a PLT entry will be created.
5253 The jump to the next instruction is optimized as a NOP.
5254 Do the same for local undefined symbols. */
5255 if (weak_undef_p && ! via_plt_p)
5257 bfd_putl32 (INSN_NOP, hit_data);
5258 return bfd_reloc_ok;
5261 /* If the call goes through a PLT entry, make sure to
5262 check distance to the right destination address. */
5264 value = (splt->output_section->vma
5265 + splt->output_offset + h->plt.offset);
5267 /* Check if a stub has to be inserted because the destination
5269 struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
5271 /* If the branch destination is directed to plt stub, "value" will be
5272 the final destination, otherwise we should plus signed_addend, it may
5273 contain non-zero value, for example call to local function symbol
5274 which are turned into "sec_sym + sec_off", and sec_off is kept in
5276 if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend,
5278 /* The target is out of reach, so redirect the branch to
5279 the local stub for this function. */
5280 stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
5282 if (stub_entry != NULL)
5284 value = (stub_entry->stub_offset
5285 + stub_entry->stub_sec->output_offset
5286 + stub_entry->stub_sec->output_section->vma);
5288 /* We have redirected the destination to stub entry address,
5289 so ignore any addend record in the original rela entry. */
5293 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5294 signed_addend, weak_undef_p);
5295 *unresolved_reloc_p = FALSE;
5298 case BFD_RELOC_AARCH64_16_PCREL:
5299 case BFD_RELOC_AARCH64_32_PCREL:
5300 case BFD_RELOC_AARCH64_64_PCREL:
5301 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
5302 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5303 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
5304 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
5305 if (bfd_link_pic (info)
5306 && (input_section->flags & SEC_ALLOC) != 0
5307 && (input_section->flags & SEC_READONLY) != 0
5311 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5313 (*_bfd_error_handler)
5314 (_("%B: relocation %s against external symbol `%s' can not be used"
5315 " when making a shared object; recompile with -fPIC"),
5316 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
5317 h->root.root.string);
5318 bfd_set_error (bfd_error_bad_value);
5322 case BFD_RELOC_AARCH64_16:
5324 case BFD_RELOC_AARCH64_32:
5326 case BFD_RELOC_AARCH64_ADD_LO12:
5327 case BFD_RELOC_AARCH64_BRANCH19:
5328 case BFD_RELOC_AARCH64_LDST128_LO12:
5329 case BFD_RELOC_AARCH64_LDST16_LO12:
5330 case BFD_RELOC_AARCH64_LDST32_LO12:
5331 case BFD_RELOC_AARCH64_LDST64_LO12:
5332 case BFD_RELOC_AARCH64_LDST8_LO12:
5333 case BFD_RELOC_AARCH64_MOVW_G0:
5334 case BFD_RELOC_AARCH64_MOVW_G0_NC:
5335 case BFD_RELOC_AARCH64_MOVW_G0_S:
5336 case BFD_RELOC_AARCH64_MOVW_G1:
5337 case BFD_RELOC_AARCH64_MOVW_G1_NC:
5338 case BFD_RELOC_AARCH64_MOVW_G1_S:
5339 case BFD_RELOC_AARCH64_MOVW_G2:
5340 case BFD_RELOC_AARCH64_MOVW_G2_NC:
5341 case BFD_RELOC_AARCH64_MOVW_G2_S:
5342 case BFD_RELOC_AARCH64_MOVW_G3:
5343 case BFD_RELOC_AARCH64_TSTBR14:
5344 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5345 signed_addend, weak_undef_p);
5348 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5349 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
5350 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
5351 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
5352 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
5353 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
5354 if (globals->root.sgot == NULL)
5355 BFD_ASSERT (h != NULL);
5360 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5362 unresolved_reloc_p);
5363 if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5364 || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
5365 addend = (globals->root.sgot->output_section->vma
5366 + globals->root.sgot->output_offset);
5367 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5368 addend, weak_undef_p);
5373 struct elf_aarch64_local_symbol *locals
5374 = elf_aarch64_locals (input_bfd);
5378 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5379 (*_bfd_error_handler)
5380 (_("%B: Local symbol descriptor table be NULL when applying "
5381 "relocation %s against local symbol"),
5382 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
5386 off = symbol_got_offset (input_bfd, h, r_symndx);
5387 base_got = globals->root.sgot;
5388 bfd_vma got_entry_addr = (base_got->output_section->vma
5389 + base_got->output_offset + off);
5391 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5393 bfd_put_64 (output_bfd, value, base_got->contents + off);
5395 if (bfd_link_pic (info))
5398 Elf_Internal_Rela outrel;
5400 /* For local symbol, we have done absolute relocation in static
5401 linking stageh. While for share library, we need to update
5402 the content of GOT entry according to the share objects
5403 loading base address. So we need to generate a
5404 R_AARCH64_RELATIVE reloc for dynamic linker. */
5405 s = globals->root.srelgot;
5409 outrel.r_offset = got_entry_addr;
5410 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
5411 outrel.r_addend = value;
5412 elf_append_rela (output_bfd, s, &outrel);
5415 symbol_got_offset_mark (input_bfd, h, r_symndx);
5418 /* Update the relocation value to GOT entry addr as we have transformed
5419 the direct data access into indirect data access through GOT. */
5420 value = got_entry_addr;
5422 if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5423 || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
5424 addend = base_got->output_section->vma + base_got->output_offset;
5426 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5427 addend, weak_undef_p);
5432 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5433 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5434 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
5436 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5438 unresolved_reloc_p);
5441 struct elf_aarch64_local_symbol *locals
5442 = elf_aarch64_locals (input_bfd);
5446 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5447 (*_bfd_error_handler)
5448 (_("%B: Local symbol descriptor table be NULL when applying "
5449 "relocation %s against local symbol"),
5450 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
5454 off = symbol_got_offset (input_bfd, h, r_symndx);
5455 base_got = globals->root.sgot;
5456 if (base_got == NULL)
5459 bfd_vma got_entry_addr = (base_got->output_section->vma
5460 + base_got->output_offset + off);
5462 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5464 bfd_put_64 (output_bfd, value, base_got->contents + off);
5466 if (bfd_link_pic (info))
5469 Elf_Internal_Rela outrel;
5471 /* For local symbol, we have done absolute relocation in static
5472 linking stage. While for share library, we need to update
5473 the content of GOT entry according to the share objects
5474 loading base address. So we need to generate a
5475 R_AARCH64_RELATIVE reloc for dynamic linker. */
5476 s = globals->root.srelgot;
5480 outrel.r_offset = got_entry_addr;
5481 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
5482 outrel.r_addend = value;
5483 elf_append_rela (output_bfd, s, &outrel);
5486 symbol_got_offset_mark (input_bfd, h, r_symndx);
5490 /* Update the relocation value to GOT entry addr as we have transformed
5491 the direct data access into indirect data access through GOT. */
5492 value = symbol_got_offset (input_bfd, h, r_symndx);
5493 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5495 *unresolved_reloc_p = FALSE;
5498 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
5499 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
5500 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
5501 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
5502 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
5503 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
5504 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
5505 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
5506 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
5507 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
5508 if (globals->root.sgot == NULL)
5509 return bfd_reloc_notsupported;
5511 value = (symbol_got_offset (input_bfd, h, r_symndx)
5512 + globals->root.sgot->output_section->vma
5513 + globals->root.sgot->output_offset);
5515 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5517 *unresolved_reloc_p = FALSE;
5520 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
5521 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
5522 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
5523 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
5524 if (globals->root.sgot == NULL)
5525 return bfd_reloc_notsupported;
5527 value = symbol_got_offset (input_bfd, h, r_symndx);
5528 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5530 *unresolved_reloc_p = FALSE;
5533 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
5534 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
5535 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
5536 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
5537 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
5538 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
5539 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
5540 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
5541 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
5542 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
5543 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
5544 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
5545 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
5546 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
5547 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
5548 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
5549 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5550 signed_addend - dtpoff_base (info),
5554 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
5555 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
5556 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
5557 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
5558 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
5559 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
5560 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
5561 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
5562 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5563 signed_addend - tpoff_base (info),
5565 *unresolved_reloc_p = FALSE;
5568 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
5569 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
5570 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
5571 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
5572 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
5573 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
5574 if (globals->root.sgot == NULL)
5575 return bfd_reloc_notsupported;
5576 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5577 + globals->root.sgotplt->output_section->vma
5578 + globals->root.sgotplt->output_offset
5579 + globals->sgotplt_jump_table_size);
5581 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5583 *unresolved_reloc_p = FALSE;
5586 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5587 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
5588 if (globals->root.sgot == NULL)
5589 return bfd_reloc_notsupported;
5591 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5592 + globals->root.sgotplt->output_section->vma
5593 + globals->root.sgotplt->output_offset
5594 + globals->sgotplt_jump_table_size);
5596 value -= (globals->root.sgot->output_section->vma
5597 + globals->root.sgot->output_offset);
5599 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5601 *unresolved_reloc_p = FALSE;
5605 return bfd_reloc_notsupported;
5609 *saved_addend = value;
5611 /* Only apply the final relocation in a sequence. */
5613 return bfd_reloc_continue;
5615 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5619 /* Handle TLS relaxations. Relaxing is possible for symbols that use
5620 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
5623 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
5624 is to then call final_link_relocate. Return other values in the
5627 static bfd_reloc_status_type
5628 elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
5629 bfd *input_bfd, bfd_byte *contents,
5630 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h)
5632 bfd_boolean is_local = h == NULL;
5633 unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
5636 BFD_ASSERT (globals && input_bfd && contents && rel);
5638 switch (elfNN_aarch64_bfd_reloc_from_type (r_type))
5640 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
5641 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
5644 /* GD->LE relaxation:
5645 adrp x0, :tlsgd:var => movz x0, :tprel_g1:var
5647 adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var
5649 bfd_putl32 (0xd2a00000, contents + rel->r_offset);
5650 return bfd_reloc_continue;
5654 /* GD->IE relaxation:
5655 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
5657 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
5659 return bfd_reloc_continue;
5662 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
5666 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
5669 /* Tiny TLSDESC->LE relaxation:
5670 ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var
5671 adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var
5675 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5676 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5678 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5679 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5680 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5682 bfd_putl32 (0xd2a00000, contents + rel->r_offset);
5683 bfd_putl32 (0xf2800000, contents + rel->r_offset + 4);
5684 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5685 return bfd_reloc_continue;
5689 /* Tiny TLSDESC->IE relaxation:
5690 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
5691 adr x0, :tlsdesc:var => nop
5695 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5696 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5698 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5699 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5701 bfd_putl32 (0x58000000, contents + rel->r_offset);
5702 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
5703 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5704 return bfd_reloc_continue;
5707 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
5710 /* Tiny GD->LE relaxation:
5711 adr x0, :tlsgd:var => mrs x1, tpidr_el0
5712 bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12
5713 nop => add x0, x0, #:tprel_lo12_nc:x
5716 /* First kill the tls_get_addr reloc on the bl instruction. */
5717 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5719 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
5720 bfd_putl32 (0x91400020, contents + rel->r_offset + 4);
5721 bfd_putl32 (0x91000000, contents + rel->r_offset + 8);
5723 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5724 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
5725 rel[1].r_offset = rel->r_offset + 8;
5727 /* Move the current relocation to the second instruction in
5730 rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5731 AARCH64_R (TLSLE_ADD_TPREL_HI12));
5732 return bfd_reloc_continue;
5736 /* Tiny GD->IE relaxation:
5737 adr x0, :tlsgd:var => ldr x0, :gottprel:var
5738 bl __tls_get_addr => mrs x1, tpidr_el0
5739 nop => add x0, x0, x1
5742 /* First kill the tls_get_addr reloc on the bl instruction. */
5743 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5744 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5746 bfd_putl32 (0x58000000, contents + rel->r_offset);
5747 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
5748 bfd_putl32 (0x8b000020, contents + rel->r_offset + 8);
5749 return bfd_reloc_continue;
5753 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
5754 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
5755 BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
5756 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
5760 /* Large GD->LE relaxation:
5761 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
5762 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
5763 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
5764 bl __tls_get_addr => mrs x1, tpidr_el0
5765 nop => add x0, x0, x1
5767 rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5768 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5769 rel[2].r_offset = rel->r_offset + 8;
5771 bfd_putl32 (0xd2c00000, contents + rel->r_offset + 0);
5772 bfd_putl32 (0xf2a00000, contents + rel->r_offset + 4);
5773 bfd_putl32 (0xf2800000, contents + rel->r_offset + 8);
5774 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
5775 bfd_putl32 (0x8b000020, contents + rel->r_offset + 16);
5779 /* Large GD->IE relaxation:
5780 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
5781 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
5782 add x0, gp, x0 => ldr x0, [gp, x0]
5783 bl __tls_get_addr => mrs x1, tpidr_el0
5784 nop => add x0, x0, x1
5786 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5787 bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
5788 bfd_putl32 (0x58000000, contents + rel->r_offset + 8);
5789 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
5790 bfd_putl32 (0x8b000020, contents + rel->r_offset + 16);
5792 return bfd_reloc_continue;
5794 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
5795 return bfd_reloc_continue;
5798 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
5799 return bfd_reloc_continue;
5801 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
5804 /* GD->LE relaxation:
5805 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
5807 bfd_putl32 (0xf2800000, contents + rel->r_offset);
5808 return bfd_reloc_continue;
5812 /* GD->IE relaxation:
5813 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var]
5815 insn = bfd_getl32 (contents + rel->r_offset);
5817 bfd_putl32 (insn, contents + rel->r_offset);
5818 return bfd_reloc_continue;
5821 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
5824 /* GD->LE relaxation
5825 add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var
5826 bl __tls_get_addr => mrs x1, tpidr_el0
5827 nop => add x0, x1, x0
5830 /* First kill the tls_get_addr reloc on the bl instruction. */
5831 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5832 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5834 bfd_putl32 (0xf2800000, contents + rel->r_offset);
5835 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
5836 bfd_putl32 (0x8b000020, contents + rel->r_offset + 8);
5837 return bfd_reloc_continue;
5841 /* GD->IE relaxation
5842 ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var]
5843 BL __tls_get_addr => mrs x1, tpidr_el0
5845 NOP => add x0, x1, x0
5848 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
5850 /* Remove the relocation on the BL instruction. */
5851 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5853 bfd_putl32 (0xf9400000, contents + rel->r_offset);
5855 /* We choose to fixup the BL and NOP instructions using the
5856 offset from the second relocation to allow flexibility in
5857 scheduling instructions between the ADD and BL. */
5858 bfd_putl32 (0xd53bd041, contents + rel[1].r_offset);
5859 bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4);
5860 return bfd_reloc_continue;
5863 case BFD_RELOC_AARCH64_TLSDESC_ADD:
5864 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
5865 case BFD_RELOC_AARCH64_TLSDESC_CALL:
5866 /* GD->IE/LE relaxation:
5867 add x0, x0, #:tlsdesc_lo12:var => nop
5870 bfd_putl32 (INSN_NOP, contents + rel->r_offset);
5871 return bfd_reloc_ok;
5873 case BFD_RELOC_AARCH64_TLSDESC_LDR:
5876 /* GD->LE relaxation:
5877 ldr xd, [gp, xn] => movk x0, #:tprel_g0_nc:var
5879 bfd_putl32 (0xf2800000, contents + rel->r_offset);
5880 return bfd_reloc_continue;
5884 /* GD->IE relaxation:
5885 ldr xd, [gp, xn] => ldr x0, [gp, xn]
5887 insn = bfd_getl32 (contents + rel->r_offset);
5889 bfd_putl32 (insn, contents + rel->r_offset);
5890 return bfd_reloc_ok;
5893 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5894 /* GD->LE relaxation:
5895 movk xd, #:tlsdesc_off_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
5897 movk xd, #:tlsdesc_off_g0_nc:var => movk xd, #:gottprel_g0_nc:var
5900 bfd_putl32 (0xf2a00000, contents + rel->r_offset);
5901 return bfd_reloc_continue;
5903 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
5906 /* GD->LE relaxation:
5907 movz xd, #:tlsdesc_off_g1:var => movz x0, #:tprel_g2:var, lsl #32
5909 bfd_putl32 (0xd2c00000, contents + rel->r_offset);
5910 return bfd_reloc_continue;
5914 /* GD->IE relaxation:
5915 movz xd, #:tlsdesc_off_g1:var => movz xd, #:gottprel_g1:var, lsl #16
5917 insn = bfd_getl32 (contents + rel->r_offset);
5918 bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset);
5919 return bfd_reloc_continue;
5922 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
5923 /* IE->LE relaxation:
5924 adrp xd, :gottprel:var => movz xd, :tprel_g1:var
5928 insn = bfd_getl32 (contents + rel->r_offset);
5929 bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset);
5931 return bfd_reloc_continue;
5933 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
5934 /* IE->LE relaxation:
5935 ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var
5939 insn = bfd_getl32 (contents + rel->r_offset);
5940 bfd_putl32 (0xf2800000 | (insn & 0x1f), contents + rel->r_offset);
5942 return bfd_reloc_continue;
5944 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
5945 /* LD->LE relaxation (tiny):
5946 adr x0, :tlsldm:x => mrs x0, tpidr_el0
5947 bl __tls_get_addr => add x0, x0, TCB_SIZE
5951 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5952 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
5953 /* No need of CALL26 relocation for tls_get_addr. */
5954 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5955 bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
5956 bfd_putl32 (0x91004000, contents + rel->r_offset + 4);
5957 return bfd_reloc_ok;
5959 return bfd_reloc_continue;
5961 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
5962 /* LD->LE relaxation (small):
5963 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
5967 bfd_putl32 (0xd53bd040, contents + rel->r_offset);
5968 return bfd_reloc_ok;
5970 return bfd_reloc_continue;
5972 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
5973 /* LD->LE relaxation (small):
5974 add x0, #:tlsldm_lo12:x => add x0, x0, TCB_SIZE
5975 bl __tls_get_addr => nop
5979 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5980 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
5981 /* No need of CALL26 relocation for tls_get_addr. */
5982 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5983 bfd_putl32 (0x91004000, contents + rel->r_offset + 0);
5984 bfd_putl32 (0xd503201f, contents + rel->r_offset + 4);
5985 return bfd_reloc_ok;
5987 return bfd_reloc_continue;
5990 return bfd_reloc_continue;
5993 return bfd_reloc_ok;
5996 /* Relocate an AArch64 ELF section. */
5999 elfNN_aarch64_relocate_section (bfd *output_bfd,
6000 struct bfd_link_info *info,
6002 asection *input_section,
6004 Elf_Internal_Rela *relocs,
6005 Elf_Internal_Sym *local_syms,
6006 asection **local_sections)
6008 Elf_Internal_Shdr *symtab_hdr;
6009 struct elf_link_hash_entry **sym_hashes;
6010 Elf_Internal_Rela *rel;
6011 Elf_Internal_Rela *relend;
6013 struct elf_aarch64_link_hash_table *globals;
6014 bfd_boolean save_addend = FALSE;
6017 globals = elf_aarch64_hash_table (info);
6019 symtab_hdr = &elf_symtab_hdr (input_bfd);
6020 sym_hashes = elf_sym_hashes (input_bfd);
6023 relend = relocs + input_section->reloc_count;
6024 for (; rel < relend; rel++)
6026 unsigned int r_type;
6027 bfd_reloc_code_real_type bfd_r_type;
6028 bfd_reloc_code_real_type relaxed_bfd_r_type;
6029 reloc_howto_type *howto;
6030 unsigned long r_symndx;
6031 Elf_Internal_Sym *sym;
6033 struct elf_link_hash_entry *h;
6035 bfd_reloc_status_type r;
6038 bfd_boolean unresolved_reloc = FALSE;
6039 char *error_message = NULL;
6041 r_symndx = ELFNN_R_SYM (rel->r_info);
6042 r_type = ELFNN_R_TYPE (rel->r_info);
6044 bfd_reloc.howto = elfNN_aarch64_howto_from_type (r_type);
6045 howto = bfd_reloc.howto;
6049 (*_bfd_error_handler)
6050 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
6051 input_bfd, input_section, r_type);
6054 bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto);
6060 if (r_symndx < symtab_hdr->sh_info)
6062 sym = local_syms + r_symndx;
6063 sym_type = ELFNN_ST_TYPE (sym->st_info);
6064 sec = local_sections[r_symndx];
6066 /* An object file might have a reference to a local
6067 undefined symbol. This is a daft object file, but we
6068 should at least do something about it. */
6069 if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL
6070 && bfd_is_und_section (sec)
6071 && ELF_ST_BIND (sym->st_info) != STB_WEAK)
6073 if (!info->callbacks->undefined_symbol
6074 (info, bfd_elf_string_from_elf_section
6075 (input_bfd, symtab_hdr->sh_link, sym->st_name),
6076 input_bfd, input_section, rel->r_offset, TRUE))
6080 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6082 /* Relocate against local STT_GNU_IFUNC symbol. */
6083 if (!bfd_link_relocatable (info)
6084 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6086 h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
6091 /* Set STT_GNU_IFUNC symbol value. */
6092 h->root.u.def.value = sym->st_value;
6093 h->root.u.def.section = sec;
6098 bfd_boolean warned, ignored;
6100 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6101 r_symndx, symtab_hdr, sym_hashes,
6103 unresolved_reloc, warned, ignored);
6108 if (sec != NULL && discarded_section (sec))
6109 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6110 rel, 1, relend, howto, 0, contents);
6112 if (bfd_link_relocatable (info))
6116 name = h->root.root.string;
6119 name = (bfd_elf_string_from_elf_section
6120 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6121 if (name == NULL || *name == '\0')
6122 name = bfd_section_name (input_bfd, sec);
6126 && r_type != R_AARCH64_NONE
6127 && r_type != R_AARCH64_NULL
6129 || h->root.type == bfd_link_hash_defined
6130 || h->root.type == bfd_link_hash_defweak)
6131 && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS))
6133 (*_bfd_error_handler)
6134 ((sym_type == STT_TLS
6135 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6136 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6138 input_section, (long) rel->r_offset, howto->name, name);
6141 /* We relax only if we can see that there can be a valid transition
6142 from a reloc type to another.
6143 We call elfNN_aarch64_final_link_relocate unless we're completely
6144 done, i.e., the relaxation produced the final output we want. */
6146 relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type,
6148 if (relaxed_bfd_r_type != bfd_r_type)
6150 bfd_r_type = relaxed_bfd_r_type;
6151 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
6152 BFD_ASSERT (howto != NULL);
6153 r_type = howto->type;
6154 r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h);
6155 unresolved_reloc = 0;
6158 r = bfd_reloc_continue;
6160 /* There may be multiple consecutive relocations for the
6161 same offset. In that case we are supposed to treat the
6162 output of each relocation as the addend for the next. */
6163 if (rel + 1 < relend
6164 && rel->r_offset == rel[1].r_offset
6165 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE
6166 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL)
6169 save_addend = FALSE;
6171 if (r == bfd_reloc_continue)
6172 r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd,
6173 input_section, contents, rel,
6174 relocation, info, sec,
6175 h, &unresolved_reloc,
6176 save_addend, &addend, sym);
6178 switch (elfNN_aarch64_bfd_reloc_from_type (r_type))
6180 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
6181 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
6182 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
6183 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
6184 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
6185 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
6186 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
6187 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
6188 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6190 bfd_boolean need_relocs = FALSE;
6195 off = symbol_got_offset (input_bfd, h, r_symndx);
6196 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6199 (bfd_link_pic (info) || indx != 0) &&
6201 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6202 || h->root.type != bfd_link_hash_undefweak);
6204 BFD_ASSERT (globals->root.srelgot != NULL);
6208 Elf_Internal_Rela rela;
6209 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD));
6211 rela.r_offset = globals->root.sgot->output_section->vma +
6212 globals->root.sgot->output_offset + off;
6215 loc = globals->root.srelgot->contents;
6216 loc += globals->root.srelgot->reloc_count++
6217 * RELOC_SIZE (htab);
6218 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6220 bfd_reloc_code_real_type real_type =
6221 elfNN_aarch64_bfd_reloc_from_type (r_type);
6223 if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
6224 || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6225 || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
6227 /* For local dynamic, don't generate DTPREL in any case.
6228 Initialize the DTPREL slot into zero, so we get module
6229 base address when invoke runtime TLS resolver. */
6230 bfd_put_NN (output_bfd, 0,
6231 globals->root.sgot->contents + off
6236 bfd_put_NN (output_bfd,
6237 relocation - dtpoff_base (info),
6238 globals->root.sgot->contents + off
6243 /* This TLS symbol is global. We emit a
6244 relocation to fixup the tls offset at load
6247 ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL));
6250 (globals->root.sgot->output_section->vma
6251 + globals->root.sgot->output_offset + off
6254 loc = globals->root.srelgot->contents;
6255 loc += globals->root.srelgot->reloc_count++
6256 * RELOC_SIZE (globals);
6257 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6258 bfd_put_NN (output_bfd, (bfd_vma) 0,
6259 globals->root.sgot->contents + off
6265 bfd_put_NN (output_bfd, (bfd_vma) 1,
6266 globals->root.sgot->contents + off);
6267 bfd_put_NN (output_bfd,
6268 relocation - dtpoff_base (info),
6269 globals->root.sgot->contents + off
6273 symbol_got_offset_mark (input_bfd, h, r_symndx);
6277 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
6278 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
6279 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
6280 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6281 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
6282 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6284 bfd_boolean need_relocs = FALSE;
6289 off = symbol_got_offset (input_bfd, h, r_symndx);
6291 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6294 (bfd_link_pic (info) || indx != 0) &&
6296 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6297 || h->root.type != bfd_link_hash_undefweak);
6299 BFD_ASSERT (globals->root.srelgot != NULL);
6303 Elf_Internal_Rela rela;
6306 rela.r_addend = relocation - dtpoff_base (info);
6310 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL));
6311 rela.r_offset = globals->root.sgot->output_section->vma +
6312 globals->root.sgot->output_offset + off;
6314 loc = globals->root.srelgot->contents;
6315 loc += globals->root.srelgot->reloc_count++
6316 * RELOC_SIZE (htab);
6318 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6320 bfd_put_NN (output_bfd, rela.r_addend,
6321 globals->root.sgot->contents + off);
6324 bfd_put_NN (output_bfd, relocation - tpoff_base (info),
6325 globals->root.sgot->contents + off);
6327 symbol_got_offset_mark (input_bfd, h, r_symndx);
6331 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
6332 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
6333 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
6334 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
6335 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
6336 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6337 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6338 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
6340 bfd_boolean need_relocs = FALSE;
6341 int indx = h && h->dynindx != -1 ? h->dynindx : 0;
6342 bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx);
6344 need_relocs = (h == NULL
6345 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6346 || h->root.type != bfd_link_hash_undefweak);
6348 BFD_ASSERT (globals->root.srelgot != NULL);
6349 BFD_ASSERT (globals->root.sgot != NULL);
6354 Elf_Internal_Rela rela;
6355 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC));
6358 rela.r_offset = (globals->root.sgotplt->output_section->vma
6359 + globals->root.sgotplt->output_offset
6360 + off + globals->sgotplt_jump_table_size);
6363 rela.r_addend = relocation - dtpoff_base (info);
6365 /* Allocate the next available slot in the PLT reloc
6366 section to hold our R_AARCH64_TLSDESC, the next
6367 available slot is determined from reloc_count,
6368 which we step. But note, reloc_count was
6369 artifically moved down while allocating slots for
6370 real PLT relocs such that all of the PLT relocs
6371 will fit above the initial reloc_count and the
6372 extra stuff will fit below. */
6373 loc = globals->root.srelplt->contents;
6374 loc += globals->root.srelplt->reloc_count++
6375 * RELOC_SIZE (globals);
6377 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6379 bfd_put_NN (output_bfd, (bfd_vma) 0,
6380 globals->root.sgotplt->contents + off +
6381 globals->sgotplt_jump_table_size);
6382 bfd_put_NN (output_bfd, (bfd_vma) 0,
6383 globals->root.sgotplt->contents + off +
6384 globals->sgotplt_jump_table_size +
6388 symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx);
6395 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6396 because such sections are not SEC_ALLOC and thus ld.so will
6397 not process them. */
6398 if (unresolved_reloc
6399 && !((input_section->flags & SEC_DEBUGGING) != 0
6401 && _bfd_elf_section_offset (output_bfd, info, input_section,
6402 +rel->r_offset) != (bfd_vma) - 1)
6404 (*_bfd_error_handler)
6406 ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6407 input_bfd, input_section, (long) rel->r_offset, howto->name,
6408 h->root.root.string);
6412 if (r != bfd_reloc_ok && r != bfd_reloc_continue)
6414 bfd_reloc_code_real_type real_r_type
6415 = elfNN_aarch64_bfd_reloc_from_type (r_type);
6419 case bfd_reloc_overflow:
6420 if (!(*info->callbacks->reloc_overflow)
6421 (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
6422 input_bfd, input_section, rel->r_offset))
6424 if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
6425 || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
6427 (*info->callbacks->warning)
6429 _("Too many GOT entries for -fpic, "
6430 "please recompile with -fPIC"),
6431 name, input_bfd, input_section, rel->r_offset);
6434 /* Overflow can occur when a variable is referenced with a type
6435 that has a larger alignment than the type with which it was
6437 file1.c: extern int foo; int a (void) { return foo; }
6438 file2.c: char bar, foo, baz;
6439 If the variable is placed into a data section at an offset
6440 that is incompatible with the larger alignment requirement
6441 overflow will occur. (Strictly speaking this is not overflow
6442 but rather an alignment problem, but the bfd_reloc_ error
6443 enum does not have a value to cover that situation).
6445 Try to catch this situation here and provide a more helpful
6446 error message to the user. */
6447 if (addend & ((1 << howto->rightshift) - 1)
6448 /* FIXME: Are we testing all of the appropriate reloc
6450 && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL
6451 || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12
6452 || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12
6453 || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12
6454 || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12))
6456 info->callbacks->warning
6457 (info, _("One possible cause of this error is that the \
6458 symbol is being referenced in the indicated code as if it had a larger \
6459 alignment than was declared where it was defined."),
6460 name, input_bfd, input_section, rel->r_offset);
6464 case bfd_reloc_undefined:
6465 if (!((*info->callbacks->undefined_symbol)
6466 (info, name, input_bfd, input_section,
6467 rel->r_offset, TRUE)))
6471 case bfd_reloc_outofrange:
6472 error_message = _("out of range");
6475 case bfd_reloc_notsupported:
6476 error_message = _("unsupported relocation");
6479 case bfd_reloc_dangerous:
6480 /* error_message should already be set. */
6484 error_message = _("unknown error");
6488 BFD_ASSERT (error_message != NULL);
6489 if (!((*info->callbacks->reloc_dangerous)
6490 (info, error_message, input_bfd, input_section,
6504 /* Set the right machine number. */
6507 elfNN_aarch64_object_p (bfd *abfd)
6510 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32);
6512 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64);
6517 /* Function to keep AArch64 specific flags in the ELF header. */
6520 elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags)
6522 if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags)
6527 elf_elfheader (abfd)->e_flags = flags;
6528 elf_flags_init (abfd) = TRUE;
6534 /* Merge backend specific data from an object file to the output
6535 object file when linking. */
6538 elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
6542 bfd_boolean flags_compatible = TRUE;
6545 /* Check if we have the same endianess. */
6546 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
6549 if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
6552 /* The input BFD must have had its flags initialised. */
6553 /* The following seems bogus to me -- The flags are initialized in
6554 the assembler but I don't think an elf_flags_init field is
6555 written into the object. */
6556 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6558 in_flags = elf_elfheader (ibfd)->e_flags;
6559 out_flags = elf_elfheader (obfd)->e_flags;
6561 if (!elf_flags_init (obfd))
6563 /* If the input is the default architecture and had the default
6564 flags then do not bother setting the flags for the output
6565 architecture, instead allow future merges to do this. If no
6566 future merges ever set these flags then they will retain their
6567 uninitialised values, which surprise surprise, correspond
6568 to the default values. */
6569 if (bfd_get_arch_info (ibfd)->the_default
6570 && elf_elfheader (ibfd)->e_flags == 0)
6573 elf_flags_init (obfd) = TRUE;
6574 elf_elfheader (obfd)->e_flags = in_flags;
6576 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6577 && bfd_get_arch_info (obfd)->the_default)
6578 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
6579 bfd_get_mach (ibfd));
6584 /* Identical flags must be compatible. */
6585 if (in_flags == out_flags)
6588 /* Check to see if the input BFD actually contains any sections. If
6589 not, its flags may not have been initialised either, but it
6590 cannot actually cause any incompatiblity. Do not short-circuit
6591 dynamic objects; their section list may be emptied by
6592 elf_link_add_object_symbols.
6594 Also check to see if there are no code sections in the input.
6595 In this case there is no need to check for code specific flags.
6596 XXX - do we need to worry about floating-point format compatability
6597 in data sections ? */
6598 if (!(ibfd->flags & DYNAMIC))
6600 bfd_boolean null_input_bfd = TRUE;
6601 bfd_boolean only_data_sections = TRUE;
6603 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6605 if ((bfd_get_section_flags (ibfd, sec)
6606 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6607 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6608 only_data_sections = FALSE;
6610 null_input_bfd = FALSE;
6614 if (null_input_bfd || only_data_sections)
6618 return flags_compatible;
6621 /* Display the flags field. */
6624 elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr)
6626 FILE *file = (FILE *) ptr;
6627 unsigned long flags;
6629 BFD_ASSERT (abfd != NULL && ptr != NULL);
6631 /* Print normal ELF private data. */
6632 _bfd_elf_print_private_bfd_data (abfd, ptr);
6634 flags = elf_elfheader (abfd)->e_flags;
6635 /* Ignore init flag - it may not be set, despite the flags field
6636 containing valid data. */
6638 /* xgettext:c-format */
6639 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
6642 fprintf (file, _("<Unrecognised flag bits set>"));
6649 /* Update the got entry reference counts for the section being removed. */
6652 elfNN_aarch64_gc_sweep_hook (bfd *abfd,
6653 struct bfd_link_info *info,
6655 const Elf_Internal_Rela * relocs)
6657 struct elf_aarch64_link_hash_table *htab;
6658 Elf_Internal_Shdr *symtab_hdr;
6659 struct elf_link_hash_entry **sym_hashes;
6660 struct elf_aarch64_local_symbol *locals;
6661 const Elf_Internal_Rela *rel, *relend;
6663 if (bfd_link_relocatable (info))
6666 htab = elf_aarch64_hash_table (info);
6671 elf_section_data (sec)->local_dynrel = NULL;
6673 symtab_hdr = &elf_symtab_hdr (abfd);
6674 sym_hashes = elf_sym_hashes (abfd);
6676 locals = elf_aarch64_locals (abfd);
6678 relend = relocs + sec->reloc_count;
6679 for (rel = relocs; rel < relend; rel++)
6681 unsigned long r_symndx;
6682 unsigned int r_type;
6683 struct elf_link_hash_entry *h = NULL;
6685 r_symndx = ELFNN_R_SYM (rel->r_info);
6687 if (r_symndx >= symtab_hdr->sh_info)
6690 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6691 while (h->root.type == bfd_link_hash_indirect
6692 || h->root.type == bfd_link_hash_warning)
6693 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6697 Elf_Internal_Sym *isym;
6699 /* A local symbol. */
6700 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
6703 /* Check relocation against local STT_GNU_IFUNC symbol. */
6705 && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
6707 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, FALSE);
6715 struct elf_aarch64_link_hash_entry *eh;
6716 struct elf_dyn_relocs **pp;
6717 struct elf_dyn_relocs *p;
6719 eh = (struct elf_aarch64_link_hash_entry *) h;
6721 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6724 /* Everything must go for SEC. */
6730 r_type = ELFNN_R_TYPE (rel->r_info);
6731 switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx))
6733 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
6734 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
6735 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
6736 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
6737 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
6738 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
6739 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
6740 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
6741 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
6742 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
6743 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
6744 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
6745 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
6746 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
6747 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
6748 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6749 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6750 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
6751 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
6752 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
6753 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
6754 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
6755 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
6756 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
6757 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
6758 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
6759 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6760 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
6761 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
6762 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
6763 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
6766 if (h->got.refcount > 0)
6767 h->got.refcount -= 1;
6769 if (h->type == STT_GNU_IFUNC)
6771 if (h->plt.refcount > 0)
6772 h->plt.refcount -= 1;
6775 else if (locals != NULL)
6777 if (locals[r_symndx].got_refcount > 0)
6778 locals[r_symndx].got_refcount -= 1;
6782 case BFD_RELOC_AARCH64_CALL26:
6783 case BFD_RELOC_AARCH64_JUMP26:
6784 /* If this is a local symbol then we resolve it
6785 directly without creating a PLT entry. */
6789 if (h->plt.refcount > 0)
6790 h->plt.refcount -= 1;
6793 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
6794 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
6795 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
6796 case BFD_RELOC_AARCH64_MOVW_G0_NC:
6797 case BFD_RELOC_AARCH64_MOVW_G1_NC:
6798 case BFD_RELOC_AARCH64_MOVW_G2_NC:
6799 case BFD_RELOC_AARCH64_MOVW_G3:
6800 case BFD_RELOC_AARCH64_NN:
6801 if (h != NULL && bfd_link_executable (info))
6803 if (h->plt.refcount > 0)
6804 h->plt.refcount -= 1;
6816 /* Adjust a symbol defined by a dynamic object and referenced by a
6817 regular object. The current definition is in some section of the
6818 dynamic object, but we're not including those sections. We have to
6819 change the definition to something the rest of the link can
6823 elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info,
6824 struct elf_link_hash_entry *h)
6826 struct elf_aarch64_link_hash_table *htab;
6829 /* If this is a function, put it in the procedure linkage table. We
6830 will fill in the contents of the procedure linkage table later,
6831 when we know the address of the .got section. */
6832 if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
6834 if (h->plt.refcount <= 0
6835 || (h->type != STT_GNU_IFUNC
6836 && (SYMBOL_CALLS_LOCAL (info, h)
6837 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6838 && h->root.type == bfd_link_hash_undefweak))))
6840 /* This case can occur if we saw a CALL26 reloc in
6841 an input file, but the symbol wasn't referred to
6842 by a dynamic object or all references were
6843 garbage collected. In which case we can end up
6845 h->plt.offset = (bfd_vma) - 1;
6852 /* Otherwise, reset to -1. */
6853 h->plt.offset = (bfd_vma) - 1;
6856 /* If this is a weak symbol, and there is a real definition, the
6857 processor independent code will have arranged for us to see the
6858 real definition first, and we can just use the same value. */
6859 if (h->u.weakdef != NULL)
6861 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6862 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6863 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6864 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6865 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
6866 h->non_got_ref = h->u.weakdef->non_got_ref;
6870 /* If we are creating a shared library, we must presume that the
6871 only references to the symbol are via the global offset table.
6872 For such cases we need not do anything here; the relocations will
6873 be handled correctly by relocate_section. */
6874 if (bfd_link_pic (info))
6877 /* If there are no references to this symbol that do not use the
6878 GOT, we don't need to generate a copy reloc. */
6879 if (!h->non_got_ref)
6882 /* If -z nocopyreloc was given, we won't generate them either. */
6883 if (info->nocopyreloc)
6889 /* We must allocate the symbol in our .dynbss section, which will
6890 become part of the .bss section of the executable. There will be
6891 an entry for this symbol in the .dynsym section. The dynamic
6892 object will contain position independent code, so all references
6893 from the dynamic object to this symbol will go through the global
6894 offset table. The dynamic linker will use the .dynsym entry to
6895 determine the address it must put in the global offset table, so
6896 both the dynamic object and the regular object will refer to the
6897 same memory location for the variable. */
6899 htab = elf_aarch64_hash_table (info);
6901 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
6902 to copy the initial value out of the dynamic object and into the
6903 runtime process image. */
6904 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6906 htab->srelbss->size += RELOC_SIZE (htab);
6912 return _bfd_elf_adjust_dynamic_copy (info, h, s);
6917 elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number)
6919 struct elf_aarch64_local_symbol *locals;
6920 locals = elf_aarch64_locals (abfd);
6923 locals = (struct elf_aarch64_local_symbol *)
6924 bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol));
6927 elf_aarch64_locals (abfd) = locals;
6932 /* Create the .got section to hold the global offset table. */
6935 aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
6937 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
6940 struct elf_link_hash_entry *h;
6941 struct elf_link_hash_table *htab = elf_hash_table (info);
6943 /* This function may be called more than once. */
6944 s = bfd_get_linker_section (abfd, ".got");
6948 flags = bed->dynamic_sec_flags;
6950 s = bfd_make_section_anyway_with_flags (abfd,
6951 (bed->rela_plts_and_copies_p
6952 ? ".rela.got" : ".rel.got"),
6953 (bed->dynamic_sec_flags
6956 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
6960 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
6962 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
6965 htab->sgot->size += GOT_ENTRY_SIZE;
6967 if (bed->want_got_sym)
6969 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
6970 (or .got.plt) section. We don't do this in the linker script
6971 because we don't want to define the symbol if we are not creating
6972 a global offset table. */
6973 h = _bfd_elf_define_linkage_sym (abfd, info, s,
6974 "_GLOBAL_OFFSET_TABLE_");
6975 elf_hash_table (info)->hgot = h;
6980 if (bed->want_got_plt)
6982 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
6984 || !bfd_set_section_alignment (abfd, s,
6985 bed->s->log_file_align))
6990 /* The first bit of the global offset table is the header. */
6991 s->size += bed->got_header_size;
6996 /* Look through the relocs for a section during the first phase. */
6999 elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
7000 asection *sec, const Elf_Internal_Rela *relocs)
7002 Elf_Internal_Shdr *symtab_hdr;
7003 struct elf_link_hash_entry **sym_hashes;
7004 const Elf_Internal_Rela *rel;
7005 const Elf_Internal_Rela *rel_end;
7008 struct elf_aarch64_link_hash_table *htab;
7010 if (bfd_link_relocatable (info))
7013 BFD_ASSERT (is_aarch64_elf (abfd));
7015 htab = elf_aarch64_hash_table (info);
7018 symtab_hdr = &elf_symtab_hdr (abfd);
7019 sym_hashes = elf_sym_hashes (abfd);
7021 rel_end = relocs + sec->reloc_count;
7022 for (rel = relocs; rel < rel_end; rel++)
7024 struct elf_link_hash_entry *h;
7025 unsigned long r_symndx;
7026 unsigned int r_type;
7027 bfd_reloc_code_real_type bfd_r_type;
7028 Elf_Internal_Sym *isym;
7030 r_symndx = ELFNN_R_SYM (rel->r_info);
7031 r_type = ELFNN_R_TYPE (rel->r_info);
7033 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7035 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
7040 if (r_symndx < symtab_hdr->sh_info)
7042 /* A local symbol. */
7043 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7048 /* Check relocation against local STT_GNU_IFUNC symbol. */
7049 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
7051 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
7056 /* Fake a STT_GNU_IFUNC symbol. */
7057 h->type = STT_GNU_IFUNC;
7060 h->forced_local = 1;
7061 h->root.type = bfd_link_hash_defined;
7068 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7069 while (h->root.type == bfd_link_hash_indirect
7070 || h->root.type == bfd_link_hash_warning)
7071 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7073 /* PR15323, ref flags aren't set for references in the same
7075 h->root.non_ir_ref = 1;
7078 /* Could be done earlier, if h were already available. */
7079 bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
7083 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7084 This shows up in particular in an R_AARCH64_PREL64 in large model
7085 when calculating the pc-relative address to .got section which is
7086 used to initialize the gp register. */
7087 if (h->root.root.string
7088 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
7090 if (htab->root.dynobj == NULL)
7091 htab->root.dynobj = abfd;
7093 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7096 BFD_ASSERT (h == htab->root.hgot);
7099 /* Create the ifunc sections for static executables. If we
7100 never see an indirect function symbol nor we are building
7101 a static executable, those sections will be empty and
7102 won't appear in output. */
7108 case BFD_RELOC_AARCH64_ADD_LO12:
7109 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7110 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7111 case BFD_RELOC_AARCH64_CALL26:
7112 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7113 case BFD_RELOC_AARCH64_JUMP26:
7114 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7115 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
7116 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
7117 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7118 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
7119 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
7120 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
7121 case BFD_RELOC_AARCH64_NN:
7122 if (htab->root.dynobj == NULL)
7123 htab->root.dynobj = abfd;
7124 if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
7129 /* It is referenced by a non-shared object. */
7131 h->root.non_ir_ref = 1;
7136 case BFD_RELOC_AARCH64_NN:
7138 /* We don't need to handle relocs into sections not going into
7139 the "real" output. */
7140 if ((sec->flags & SEC_ALLOC) == 0)
7145 if (!bfd_link_pic (info))
7148 h->plt.refcount += 1;
7149 h->pointer_equality_needed = 1;
7152 /* No need to do anything if we're not creating a shared
7154 if (! bfd_link_pic (info))
7158 struct elf_dyn_relocs *p;
7159 struct elf_dyn_relocs **head;
7161 /* We must copy these reloc types into the output file.
7162 Create a reloc section in dynobj and make room for
7166 if (htab->root.dynobj == NULL)
7167 htab->root.dynobj = abfd;
7169 sreloc = _bfd_elf_make_dynamic_reloc_section
7170 (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
7176 /* If this is a global symbol, we count the number of
7177 relocations we need for this symbol. */
7180 struct elf_aarch64_link_hash_entry *eh;
7181 eh = (struct elf_aarch64_link_hash_entry *) h;
7182 head = &eh->dyn_relocs;
7186 /* Track dynamic relocs needed for local syms too.
7187 We really need local syms available to do this
7193 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7198 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
7202 /* Beware of type punned pointers vs strict aliasing
7204 vpp = &(elf_section_data (s)->local_dynrel);
7205 head = (struct elf_dyn_relocs **) vpp;
7209 if (p == NULL || p->sec != sec)
7211 bfd_size_type amt = sizeof *p;
7212 p = ((struct elf_dyn_relocs *)
7213 bfd_zalloc (htab->root.dynobj, amt));
7226 /* RR: We probably want to keep a consistency check that
7227 there are no dangling GOT_PAGE relocs. */
7228 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7229 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7230 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7231 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
7232 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
7233 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7234 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
7235 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
7236 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
7237 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
7238 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
7239 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7240 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
7241 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
7242 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
7243 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7244 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
7245 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7246 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
7247 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7248 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
7249 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
7250 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
7251 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7252 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
7253 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
7254 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7255 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
7256 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
7257 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
7258 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
7259 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
7260 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
7261 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
7264 unsigned old_got_type;
7266 got_type = aarch64_reloc_got_type (bfd_r_type);
7270 h->got.refcount += 1;
7271 old_got_type = elf_aarch64_hash_entry (h)->got_type;
7275 struct elf_aarch64_local_symbol *locals;
7277 if (!elfNN_aarch64_allocate_local_symbols
7278 (abfd, symtab_hdr->sh_info))
7281 locals = elf_aarch64_locals (abfd);
7282 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7283 locals[r_symndx].got_refcount += 1;
7284 old_got_type = locals[r_symndx].got_type;
7287 /* If a variable is accessed with both general dynamic TLS
7288 methods, two slots may be created. */
7289 if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type))
7290 got_type |= old_got_type;
7292 /* We will already have issued an error message if there
7293 is a TLS/non-TLS mismatch, based on the symbol type.
7294 So just combine any TLS types needed. */
7295 if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL
7296 && got_type != GOT_NORMAL)
7297 got_type |= old_got_type;
7299 /* If the symbol is accessed by both IE and GD methods, we
7300 are able to relax. Turn off the GD flag, without
7301 messing up with any other kind of TLS types that may be
7303 if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type))
7304 got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD);
7306 if (old_got_type != got_type)
7309 elf_aarch64_hash_entry (h)->got_type = got_type;
7312 struct elf_aarch64_local_symbol *locals;
7313 locals = elf_aarch64_locals (abfd);
7314 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7315 locals[r_symndx].got_type = got_type;
7319 if (htab->root.dynobj == NULL)
7320 htab->root.dynobj = abfd;
7321 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7326 case BFD_RELOC_AARCH64_MOVW_G0_NC:
7327 case BFD_RELOC_AARCH64_MOVW_G1_NC:
7328 case BFD_RELOC_AARCH64_MOVW_G2_NC:
7329 case BFD_RELOC_AARCH64_MOVW_G3:
7330 if (bfd_link_pic (info))
7332 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7333 (*_bfd_error_handler)
7334 (_("%B: relocation %s against `%s' can not be used when making "
7335 "a shared object; recompile with -fPIC"),
7336 abfd, elfNN_aarch64_howto_table[howto_index].name,
7337 (h) ? h->root.root.string : "a local symbol");
7338 bfd_set_error (bfd_error_bad_value);
7342 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
7343 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7344 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
7345 if (h != NULL && bfd_link_executable (info))
7347 /* If this reloc is in a read-only section, we might
7348 need a copy reloc. We can't check reliably at this
7349 stage whether the section is read-only, as input
7350 sections have not yet been mapped to output sections.
7351 Tentatively set the flag for now, and correct in
7352 adjust_dynamic_symbol. */
7354 h->plt.refcount += 1;
7355 h->pointer_equality_needed = 1;
7357 /* FIXME:: RR need to handle these in shared libraries
7358 and essentially bomb out as these being non-PIC
7359 relocations in shared libraries. */
7362 case BFD_RELOC_AARCH64_CALL26:
7363 case BFD_RELOC_AARCH64_JUMP26:
7364 /* If this is a local symbol then we resolve it
7365 directly without creating a PLT entry. */
7370 if (h->plt.refcount <= 0)
7371 h->plt.refcount = 1;
7373 h->plt.refcount += 1;
7384 /* Treat mapping symbols as special target symbols. */
7387 elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED,
7390 return bfd_is_aarch64_special_symbol_name (sym->name,
7391 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY);
7394 /* This is a copy of elf_find_function () from elf.c except that
7395 AArch64 mapping symbols are ignored when looking for function names. */
7398 aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
7402 const char **filename_ptr,
7403 const char **functionname_ptr)
7405 const char *filename = NULL;
7406 asymbol *func = NULL;
7407 bfd_vma low_func = 0;
7410 for (p = symbols; *p != NULL; p++)
7414 q = (elf_symbol_type *) * p;
7416 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
7421 filename = bfd_asymbol_name (&q->symbol);
7425 /* Skip mapping symbols. */
7426 if ((q->symbol.flags & BSF_LOCAL)
7427 && (bfd_is_aarch64_special_symbol_name
7428 (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)))
7431 if (bfd_get_section (&q->symbol) == section
7432 && q->symbol.value >= low_func && q->symbol.value <= offset)
7434 func = (asymbol *) q;
7435 low_func = q->symbol.value;
7445 *filename_ptr = filename;
7446 if (functionname_ptr)
7447 *functionname_ptr = bfd_asymbol_name (func);
7453 /* Find the nearest line to a particular section and offset, for error
7454 reporting. This code is a duplicate of the code in elf.c, except
7455 that it uses aarch64_elf_find_function. */
7458 elfNN_aarch64_find_nearest_line (bfd *abfd,
7462 const char **filename_ptr,
7463 const char **functionname_ptr,
7464 unsigned int *line_ptr,
7465 unsigned int *discriminator_ptr)
7467 bfd_boolean found = FALSE;
7469 if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
7470 filename_ptr, functionname_ptr,
7471 line_ptr, discriminator_ptr,
7472 dwarf_debug_sections, 0,
7473 &elf_tdata (abfd)->dwarf2_find_line_info))
7475 if (!*functionname_ptr)
7476 aarch64_elf_find_function (abfd, symbols, section, offset,
7477 *filename_ptr ? NULL : filename_ptr,
7483 /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64
7484 toolchain uses DWARF1. */
7486 if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7487 &found, filename_ptr,
7488 functionname_ptr, line_ptr,
7489 &elf_tdata (abfd)->line_info))
7492 if (found && (*functionname_ptr || *line_ptr))
7495 if (symbols == NULL)
7498 if (!aarch64_elf_find_function (abfd, symbols, section, offset,
7499 filename_ptr, functionname_ptr))
7507 elfNN_aarch64_find_inliner_info (bfd *abfd,
7508 const char **filename_ptr,
7509 const char **functionname_ptr,
7510 unsigned int *line_ptr)
7513 found = _bfd_dwarf2_find_inliner_info
7514 (abfd, filename_ptr,
7515 functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info);
7521 elfNN_aarch64_post_process_headers (bfd *abfd,
7522 struct bfd_link_info *link_info)
7524 Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
7526 i_ehdrp = elf_elfheader (abfd);
7527 i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
7529 _bfd_elf_post_process_headers (abfd, link_info);
7532 static enum elf_reloc_type_class
7533 elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
7534 const asection *rel_sec ATTRIBUTE_UNUSED,
7535 const Elf_Internal_Rela *rela)
7537 switch ((int) ELFNN_R_TYPE (rela->r_info))
7539 case AARCH64_R (RELATIVE):
7540 return reloc_class_relative;
7541 case AARCH64_R (JUMP_SLOT):
7542 return reloc_class_plt;
7543 case AARCH64_R (COPY):
7544 return reloc_class_copy;
7546 return reloc_class_normal;
7550 /* Handle an AArch64 specific section when reading an object file. This is
7551 called when bfd_section_from_shdr finds a section with an unknown
7555 elfNN_aarch64_section_from_shdr (bfd *abfd,
7556 Elf_Internal_Shdr *hdr,
7557 const char *name, int shindex)
7559 /* There ought to be a place to keep ELF backend specific flags, but
7560 at the moment there isn't one. We just keep track of the
7561 sections by their name, instead. Fortunately, the ABI gives
7562 names for all the AArch64 specific sections, so we will probably get
7564 switch (hdr->sh_type)
7566 case SHT_AARCH64_ATTRIBUTES:
7573 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
7579 /* A structure used to record a list of sections, independently
7580 of the next and prev fields in the asection structure. */
7581 typedef struct section_list
7584 struct section_list *next;
7585 struct section_list *prev;
7589 /* Unfortunately we need to keep a list of sections for which
7590 an _aarch64_elf_section_data structure has been allocated. This
7591 is because it is possible for functions like elfNN_aarch64_write_section
7592 to be called on a section which has had an elf_data_structure
7593 allocated for it (and so the used_by_bfd field is valid) but
7594 for which the AArch64 extended version of this structure - the
7595 _aarch64_elf_section_data structure - has not been allocated. */
7596 static section_list *sections_with_aarch64_elf_section_data = NULL;
7599 record_section_with_aarch64_elf_section_data (asection *sec)
7601 struct section_list *entry;
7603 entry = bfd_malloc (sizeof (*entry));
7607 entry->next = sections_with_aarch64_elf_section_data;
7609 if (entry->next != NULL)
7610 entry->next->prev = entry;
7611 sections_with_aarch64_elf_section_data = entry;
7614 static struct section_list *
7615 find_aarch64_elf_section_entry (asection *sec)
7617 struct section_list *entry;
7618 static struct section_list *last_entry = NULL;
7620 /* This is a short cut for the typical case where the sections are added
7621 to the sections_with_aarch64_elf_section_data list in forward order and
7622 then looked up here in backwards order. This makes a real difference
7623 to the ld-srec/sec64k.exp linker test. */
7624 entry = sections_with_aarch64_elf_section_data;
7625 if (last_entry != NULL)
7627 if (last_entry->sec == sec)
7629 else if (last_entry->next != NULL && last_entry->next->sec == sec)
7630 entry = last_entry->next;
7633 for (; entry; entry = entry->next)
7634 if (entry->sec == sec)
7638 /* Record the entry prior to this one - it is the entry we are
7639 most likely to want to locate next time. Also this way if we
7640 have been called from
7641 unrecord_section_with_aarch64_elf_section_data () we will not
7642 be caching a pointer that is about to be freed. */
7643 last_entry = entry->prev;
7649 unrecord_section_with_aarch64_elf_section_data (asection *sec)
7651 struct section_list *entry;
7653 entry = find_aarch64_elf_section_entry (sec);
7657 if (entry->prev != NULL)
7658 entry->prev->next = entry->next;
7659 if (entry->next != NULL)
7660 entry->next->prev = entry->prev;
7661 if (entry == sections_with_aarch64_elf_section_data)
7662 sections_with_aarch64_elf_section_data = entry->next;
7671 struct bfd_link_info *info;
7674 int (*func) (void *, const char *, Elf_Internal_Sym *,
7675 asection *, struct elf_link_hash_entry *);
7676 } output_arch_syminfo;
7678 enum map_symbol_type
7685 /* Output a single mapping symbol. */
7688 elfNN_aarch64_output_map_sym (output_arch_syminfo *osi,
7689 enum map_symbol_type type, bfd_vma offset)
7691 static const char *names[2] = { "$x", "$d" };
7692 Elf_Internal_Sym sym;
7694 sym.st_value = (osi->sec->output_section->vma
7695 + osi->sec->output_offset + offset);
7698 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
7699 sym.st_shndx = osi->sec_shndx;
7700 return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
7703 /* Output a single local symbol for a generated stub. */
7706 elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name,
7707 bfd_vma offset, bfd_vma size)
7709 Elf_Internal_Sym sym;
7711 sym.st_value = (osi->sec->output_section->vma
7712 + osi->sec->output_offset + offset);
7715 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
7716 sym.st_shndx = osi->sec_shndx;
7717 return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
7721 aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7723 struct elf_aarch64_stub_hash_entry *stub_entry;
7727 output_arch_syminfo *osi;
7729 /* Massage our args to the form they really have. */
7730 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
7731 osi = (output_arch_syminfo *) in_arg;
7733 stub_sec = stub_entry->stub_sec;
7735 /* Ensure this stub is attached to the current section being
7737 if (stub_sec != osi->sec)
7740 addr = (bfd_vma) stub_entry->stub_offset;
7742 stub_name = stub_entry->output_name;
7744 switch (stub_entry->stub_type)
7746 case aarch64_stub_adrp_branch:
7747 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7748 sizeof (aarch64_adrp_branch_stub)))
7750 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7753 case aarch64_stub_long_branch:
7754 if (!elfNN_aarch64_output_stub_sym
7755 (osi, stub_name, addr, sizeof (aarch64_long_branch_stub)))
7757 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7759 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
7762 case aarch64_stub_erratum_835769_veneer:
7763 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7764 sizeof (aarch64_erratum_835769_stub)))
7766 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7769 case aarch64_stub_erratum_843419_veneer:
7770 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7771 sizeof (aarch64_erratum_843419_stub)))
7773 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7784 /* Output mapping symbols for linker generated sections. */
7787 elfNN_aarch64_output_arch_local_syms (bfd *output_bfd,
7788 struct bfd_link_info *info,
7790 int (*func) (void *, const char *,
7793 struct elf_link_hash_entry
7796 output_arch_syminfo osi;
7797 struct elf_aarch64_link_hash_table *htab;
7799 htab = elf_aarch64_hash_table (info);
7805 /* Long calls stubs. */
7806 if (htab->stub_bfd && htab->stub_bfd->sections)
7810 for (stub_sec = htab->stub_bfd->sections;
7811 stub_sec != NULL; stub_sec = stub_sec->next)
7813 /* Ignore non-stub sections. */
7814 if (!strstr (stub_sec->name, STUB_SUFFIX))
7819 osi.sec_shndx = _bfd_elf_section_from_bfd_section
7820 (output_bfd, osi.sec->output_section);
7822 /* The first instruction in a stub is always a branch. */
7823 if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
7826 bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
7831 /* Finally, output mapping symbols for the PLT. */
7832 if (!htab->root.splt || htab->root.splt->size == 0)
7835 osi.sec_shndx = _bfd_elf_section_from_bfd_section
7836 (output_bfd, htab->root.splt->output_section);
7837 osi.sec = htab->root.splt;
7839 elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
7845 /* Allocate target specific section data. */
7848 elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec)
7850 if (!sec->used_by_bfd)
7852 _aarch64_elf_section_data *sdata;
7853 bfd_size_type amt = sizeof (*sdata);
7855 sdata = bfd_zalloc (abfd, amt);
7858 sec->used_by_bfd = sdata;
7861 record_section_with_aarch64_elf_section_data (sec);
7863 return _bfd_elf_new_section_hook (abfd, sec);
7868 unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED,
7870 void *ignore ATTRIBUTE_UNUSED)
7872 unrecord_section_with_aarch64_elf_section_data (sec);
7876 elfNN_aarch64_close_and_cleanup (bfd *abfd)
7879 bfd_map_over_sections (abfd,
7880 unrecord_section_via_map_over_sections, NULL);
7882 return _bfd_elf_close_and_cleanup (abfd);
7886 elfNN_aarch64_bfd_free_cached_info (bfd *abfd)
7889 bfd_map_over_sections (abfd,
7890 unrecord_section_via_map_over_sections, NULL);
7892 return _bfd_free_cached_info (abfd);
7895 /* Create dynamic sections. This is different from the ARM backend in that
7896 the got, plt, gotplt and their relocation sections are all created in the
7897 standard part of the bfd elf backend. */
7900 elfNN_aarch64_create_dynamic_sections (bfd *dynobj,
7901 struct bfd_link_info *info)
7903 struct elf_aarch64_link_hash_table *htab;
7905 /* We need to create .got section. */
7906 if (!aarch64_elf_create_got_section (dynobj, info))
7909 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
7912 htab = elf_aarch64_hash_table (info);
7913 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
7914 if (!bfd_link_pic (info))
7915 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
7917 if (!htab->sdynbss || (!bfd_link_pic (info) && !htab->srelbss))
7924 /* Allocate space in .plt, .got and associated reloc sections for
7928 elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7930 struct bfd_link_info *info;
7931 struct elf_aarch64_link_hash_table *htab;
7932 struct elf_aarch64_link_hash_entry *eh;
7933 struct elf_dyn_relocs *p;
7935 /* An example of a bfd_link_hash_indirect symbol is versioned
7936 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
7937 -> __gxx_personality_v0(bfd_link_hash_defined)
7939 There is no need to process bfd_link_hash_indirect symbols here
7940 because we will also be presented with the concrete instance of
7941 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
7942 called to copy all relevant data from the generic to the concrete
7945 if (h->root.type == bfd_link_hash_indirect)
7948 if (h->root.type == bfd_link_hash_warning)
7949 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7951 info = (struct bfd_link_info *) inf;
7952 htab = elf_aarch64_hash_table (info);
7954 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
7955 here if it is defined and referenced in a non-shared object. */
7956 if (h->type == STT_GNU_IFUNC
7959 else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
7961 /* Make sure this symbol is output as a dynamic symbol.
7962 Undefined weak syms won't yet be marked as dynamic. */
7963 if (h->dynindx == -1 && !h->forced_local)
7965 if (!bfd_elf_link_record_dynamic_symbol (info, h))
7969 if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
7971 asection *s = htab->root.splt;
7973 /* If this is the first .plt entry, make room for the special
7976 s->size += htab->plt_header_size;
7978 h->plt.offset = s->size;
7980 /* If this symbol is not defined in a regular file, and we are
7981 not generating a shared library, then set the symbol to this
7982 location in the .plt. This is required to make function
7983 pointers compare as equal between the normal executable and
7984 the shared library. */
7985 if (!bfd_link_pic (info) && !h->def_regular)
7987 h->root.u.def.section = s;
7988 h->root.u.def.value = h->plt.offset;
7991 /* Make room for this entry. For now we only create the
7992 small model PLT entries. We later need to find a way
7993 of relaxing into these from the large model PLT entries. */
7994 s->size += PLT_SMALL_ENTRY_SIZE;
7996 /* We also need to make an entry in the .got.plt section, which
7997 will be placed in the .got section by the linker script. */
7998 htab->root.sgotplt->size += GOT_ENTRY_SIZE;
8000 /* We also need to make an entry in the .rela.plt section. */
8001 htab->root.srelplt->size += RELOC_SIZE (htab);
8003 /* We need to ensure that all GOT entries that serve the PLT
8004 are consecutive with the special GOT slots [0] [1] and
8005 [2]. Any addtional relocations, such as
8006 R_AARCH64_TLSDESC, must be placed after the PLT related
8007 entries. We abuse the reloc_count such that during
8008 sizing we adjust reloc_count to indicate the number of
8009 PLT related reserved entries. In subsequent phases when
8010 filling in the contents of the reloc entries, PLT related
8011 entries are placed by computing their PLT index (0
8012 .. reloc_count). While other none PLT relocs are placed
8013 at the slot indicated by reloc_count and reloc_count is
8016 htab->root.srelplt->reloc_count++;
8020 h->plt.offset = (bfd_vma) - 1;
8026 h->plt.offset = (bfd_vma) - 1;
8030 eh = (struct elf_aarch64_link_hash_entry *) h;
8031 eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8033 if (h->got.refcount > 0)
8036 unsigned got_type = elf_aarch64_hash_entry (h)->got_type;
8038 h->got.offset = (bfd_vma) - 1;
8040 dyn = htab->root.dynamic_sections_created;
8042 /* Make sure this symbol is output as a dynamic symbol.
8043 Undefined weak syms won't yet be marked as dynamic. */
8044 if (dyn && h->dynindx == -1 && !h->forced_local)
8046 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8050 if (got_type == GOT_UNKNOWN)
8053 else if (got_type == GOT_NORMAL)
8055 h->got.offset = htab->root.sgot->size;
8056 htab->root.sgot->size += GOT_ENTRY_SIZE;
8057 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8058 || h->root.type != bfd_link_hash_undefweak)
8059 && (bfd_link_pic (info)
8060 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8062 htab->root.srelgot->size += RELOC_SIZE (htab);
8068 if (got_type & GOT_TLSDESC_GD)
8070 eh->tlsdesc_got_jump_table_offset =
8071 (htab->root.sgotplt->size
8072 - aarch64_compute_jump_table_size (htab));
8073 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8074 h->got.offset = (bfd_vma) - 2;
8077 if (got_type & GOT_TLS_GD)
8079 h->got.offset = htab->root.sgot->size;
8080 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8083 if (got_type & GOT_TLS_IE)
8085 h->got.offset = htab->root.sgot->size;
8086 htab->root.sgot->size += GOT_ENTRY_SIZE;
8089 indx = h && h->dynindx != -1 ? h->dynindx : 0;
8090 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8091 || h->root.type != bfd_link_hash_undefweak)
8092 && (bfd_link_pic (info)
8094 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8096 if (got_type & GOT_TLSDESC_GD)
8098 htab->root.srelplt->size += RELOC_SIZE (htab);
8099 /* Note reloc_count not incremented here! We have
8100 already adjusted reloc_count for this relocation
8103 /* TLSDESC PLT is now needed, but not yet determined. */
8104 htab->tlsdesc_plt = (bfd_vma) - 1;
8107 if (got_type & GOT_TLS_GD)
8108 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8110 if (got_type & GOT_TLS_IE)
8111 htab->root.srelgot->size += RELOC_SIZE (htab);
8117 h->got.offset = (bfd_vma) - 1;
8120 if (eh->dyn_relocs == NULL)
8123 /* In the shared -Bsymbolic case, discard space allocated for
8124 dynamic pc-relative relocs against symbols which turn out to be
8125 defined in regular objects. For the normal shared case, discard
8126 space for pc-relative relocs that have become local due to symbol
8127 visibility changes. */
8129 if (bfd_link_pic (info))
8131 /* Relocs that use pc_count are those that appear on a call
8132 insn, or certain REL relocs that can generated via assembly.
8133 We want calls to protected symbols to resolve directly to the
8134 function rather than going via the plt. If people want
8135 function pointer comparisons to work as expected then they
8136 should avoid writing weird assembly. */
8137 if (SYMBOL_CALLS_LOCAL (info, h))
8139 struct elf_dyn_relocs **pp;
8141 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
8143 p->count -= p->pc_count;
8152 /* Also discard relocs on undefined weak syms with non-default
8154 if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak)
8156 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8157 eh->dyn_relocs = NULL;
8159 /* Make sure undefined weak symbols are output as a dynamic
8161 else if (h->dynindx == -1
8163 && !bfd_elf_link_record_dynamic_symbol (info, h))
8168 else if (ELIMINATE_COPY_RELOCS)
8170 /* For the non-shared case, discard space for relocs against
8171 symbols which turn out to need copy relocs or are not
8177 || (htab->root.dynamic_sections_created
8178 && (h->root.type == bfd_link_hash_undefweak
8179 || h->root.type == bfd_link_hash_undefined))))
8181 /* Make sure this symbol is output as a dynamic symbol.
8182 Undefined weak syms won't yet be marked as dynamic. */
8183 if (h->dynindx == -1
8185 && !bfd_elf_link_record_dynamic_symbol (info, h))
8188 /* If that succeeded, we know we'll be keeping all the
8190 if (h->dynindx != -1)
8194 eh->dyn_relocs = NULL;
8199 /* Finally, allocate space. */
8200 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8204 sreloc = elf_section_data (p->sec)->sreloc;
8206 BFD_ASSERT (sreloc != NULL);
8208 sreloc->size += p->count * RELOC_SIZE (htab);
8214 /* Allocate space in .plt, .got and associated reloc sections for
8215 ifunc dynamic relocs. */
8218 elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
8221 struct bfd_link_info *info;
8222 struct elf_aarch64_link_hash_table *htab;
8223 struct elf_aarch64_link_hash_entry *eh;
8225 /* An example of a bfd_link_hash_indirect symbol is versioned
8226 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8227 -> __gxx_personality_v0(bfd_link_hash_defined)
8229 There is no need to process bfd_link_hash_indirect symbols here
8230 because we will also be presented with the concrete instance of
8231 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8232 called to copy all relevant data from the generic to the concrete
8235 if (h->root.type == bfd_link_hash_indirect)
8238 if (h->root.type == bfd_link_hash_warning)
8239 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8241 info = (struct bfd_link_info *) inf;
8242 htab = elf_aarch64_hash_table (info);
8244 eh = (struct elf_aarch64_link_hash_entry *) h;
8246 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8247 here if it is defined and referenced in a non-shared object. */
8248 if (h->type == STT_GNU_IFUNC
8250 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
8253 htab->plt_entry_size,
8254 htab->plt_header_size,
8259 /* Allocate space in .plt, .got and associated reloc sections for
8260 local dynamic relocs. */
8263 elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf)
8265 struct elf_link_hash_entry *h
8266 = (struct elf_link_hash_entry *) *slot;
8268 if (h->type != STT_GNU_IFUNC
8272 || h->root.type != bfd_link_hash_defined)
8275 return elfNN_aarch64_allocate_dynrelocs (h, inf);
8278 /* Allocate space in .plt, .got and associated reloc sections for
8279 local ifunc dynamic relocs. */
8282 elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
8284 struct elf_link_hash_entry *h
8285 = (struct elf_link_hash_entry *) *slot;
8287 if (h->type != STT_GNU_IFUNC
8291 || h->root.type != bfd_link_hash_defined)
8294 return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
8297 /* Find any dynamic relocs that apply to read-only sections. */
8300 aarch64_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf)
8302 struct elf_aarch64_link_hash_entry * eh;
8303 struct elf_dyn_relocs * p;
8305 eh = (struct elf_aarch64_link_hash_entry *) h;
8306 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8308 asection *s = p->sec;
8310 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8312 struct bfd_link_info *info = (struct bfd_link_info *) inf;
8314 info->flags |= DF_TEXTREL;
8316 /* Not an error, just cut short the traversal. */
8323 /* This is the most important function of all . Innocuosly named
8326 elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8327 struct bfd_link_info *info)
8329 struct elf_aarch64_link_hash_table *htab;
8335 htab = elf_aarch64_hash_table ((info));
8336 dynobj = htab->root.dynobj;
8338 BFD_ASSERT (dynobj != NULL);
8340 if (htab->root.dynamic_sections_created)
8342 if (bfd_link_executable (info) && !info->nointerp)
8344 s = bfd_get_linker_section (dynobj, ".interp");
8347 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8348 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8352 /* Set up .got offsets for local syms, and space for local dynamic
8354 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8356 struct elf_aarch64_local_symbol *locals = NULL;
8357 Elf_Internal_Shdr *symtab_hdr;
8361 if (!is_aarch64_elf (ibfd))
8364 for (s = ibfd->sections; s != NULL; s = s->next)
8366 struct elf_dyn_relocs *p;
8368 for (p = (struct elf_dyn_relocs *)
8369 (elf_section_data (s)->local_dynrel); p != NULL; p = p->next)
8371 if (!bfd_is_abs_section (p->sec)
8372 && bfd_is_abs_section (p->sec->output_section))
8374 /* Input section has been discarded, either because
8375 it is a copy of a linkonce section or due to
8376 linker script /DISCARD/, so we'll be discarding
8379 else if (p->count != 0)
8381 srel = elf_section_data (p->sec)->sreloc;
8382 srel->size += p->count * RELOC_SIZE (htab);
8383 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8384 info->flags |= DF_TEXTREL;
8389 locals = elf_aarch64_locals (ibfd);
8393 symtab_hdr = &elf_symtab_hdr (ibfd);
8394 srel = htab->root.srelgot;
8395 for (i = 0; i < symtab_hdr->sh_info; i++)
8397 locals[i].got_offset = (bfd_vma) - 1;
8398 locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8399 if (locals[i].got_refcount > 0)
8401 unsigned got_type = locals[i].got_type;
8402 if (got_type & GOT_TLSDESC_GD)
8404 locals[i].tlsdesc_got_jump_table_offset =
8405 (htab->root.sgotplt->size
8406 - aarch64_compute_jump_table_size (htab));
8407 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8408 locals[i].got_offset = (bfd_vma) - 2;
8411 if (got_type & GOT_TLS_GD)
8413 locals[i].got_offset = htab->root.sgot->size;
8414 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8417 if (got_type & GOT_TLS_IE
8418 || got_type & GOT_NORMAL)
8420 locals[i].got_offset = htab->root.sgot->size;
8421 htab->root.sgot->size += GOT_ENTRY_SIZE;
8424 if (got_type == GOT_UNKNOWN)
8428 if (bfd_link_pic (info))
8430 if (got_type & GOT_TLSDESC_GD)
8432 htab->root.srelplt->size += RELOC_SIZE (htab);
8433 /* Note RELOC_COUNT not incremented here! */
8434 htab->tlsdesc_plt = (bfd_vma) - 1;
8437 if (got_type & GOT_TLS_GD)
8438 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8440 if (got_type & GOT_TLS_IE
8441 || got_type & GOT_NORMAL)
8442 htab->root.srelgot->size += RELOC_SIZE (htab);
8447 locals[i].got_refcount = (bfd_vma) - 1;
8453 /* Allocate global sym .plt and .got entries, and space for global
8454 sym dynamic relocs. */
8455 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
8458 /* Allocate global ifunc sym .plt and .got entries, and space for global
8459 ifunc sym dynamic relocs. */
8460 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
8463 /* Allocate .plt and .got entries, and space for local symbols. */
8464 htab_traverse (htab->loc_hash_table,
8465 elfNN_aarch64_allocate_local_dynrelocs,
8468 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8469 htab_traverse (htab->loc_hash_table,
8470 elfNN_aarch64_allocate_local_ifunc_dynrelocs,
8473 /* For every jump slot reserved in the sgotplt, reloc_count is
8474 incremented. However, when we reserve space for TLS descriptors,
8475 it's not incremented, so in order to compute the space reserved
8476 for them, it suffices to multiply the reloc count by the jump
8479 if (htab->root.srelplt)
8480 htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
8482 if (htab->tlsdesc_plt)
8484 if (htab->root.splt->size == 0)
8485 htab->root.splt->size += PLT_ENTRY_SIZE;
8487 htab->tlsdesc_plt = htab->root.splt->size;
8488 htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE;
8490 /* If we're not using lazy TLS relocations, don't generate the
8491 GOT entry required. */
8492 if (!(info->flags & DF_BIND_NOW))
8494 htab->dt_tlsdesc_got = htab->root.sgot->size;
8495 htab->root.sgot->size += GOT_ENTRY_SIZE;
8499 /* Init mapping symbols information to use later to distingush between
8500 code and data while scanning for errata. */
8501 if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
8502 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8504 if (!is_aarch64_elf (ibfd))
8506 bfd_elfNN_aarch64_init_maps (ibfd);
8509 /* We now have determined the sizes of the various dynamic sections.
8510 Allocate memory for them. */
8512 for (s = dynobj->sections; s != NULL; s = s->next)
8514 if ((s->flags & SEC_LINKER_CREATED) == 0)
8517 if (s == htab->root.splt
8518 || s == htab->root.sgot
8519 || s == htab->root.sgotplt
8520 || s == htab->root.iplt
8521 || s == htab->root.igotplt || s == htab->sdynbss)
8523 /* Strip this section if we don't need it; see the
8526 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
8528 if (s->size != 0 && s != htab->root.srelplt)
8531 /* We use the reloc_count field as a counter if we need
8532 to copy relocs into the output file. */
8533 if (s != htab->root.srelplt)
8538 /* It's not one of our sections, so don't allocate space. */
8544 /* If we don't need this section, strip it from the
8545 output file. This is mostly to handle .rela.bss and
8546 .rela.plt. We must create both sections in
8547 create_dynamic_sections, because they must be created
8548 before the linker maps input sections to output
8549 sections. The linker does that before
8550 adjust_dynamic_symbol is called, and it is that
8551 function which decides whether anything needs to go
8552 into these sections. */
8554 s->flags |= SEC_EXCLUDE;
8558 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8561 /* Allocate memory for the section contents. We use bfd_zalloc
8562 here in case unused entries are not reclaimed before the
8563 section's contents are written out. This should not happen,
8564 but this way if it does, we get a R_AARCH64_NONE reloc instead
8566 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
8567 if (s->contents == NULL)
8571 if (htab->root.dynamic_sections_created)
8573 /* Add some entries to the .dynamic section. We fill in the
8574 values later, in elfNN_aarch64_finish_dynamic_sections, but we
8575 must add the entries now so that we get the correct size for
8576 the .dynamic section. The DT_DEBUG entry is filled in by the
8577 dynamic linker and used by the debugger. */
8578 #define add_dynamic_entry(TAG, VAL) \
8579 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8581 if (bfd_link_executable (info))
8583 if (!add_dynamic_entry (DT_DEBUG, 0))
8587 if (htab->root.splt->size != 0)
8589 if (!add_dynamic_entry (DT_PLTGOT, 0)
8590 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8591 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8592 || !add_dynamic_entry (DT_JMPREL, 0))
8595 if (htab->tlsdesc_plt
8596 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
8597 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
8603 if (!add_dynamic_entry (DT_RELA, 0)
8604 || !add_dynamic_entry (DT_RELASZ, 0)
8605 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8608 /* If any dynamic relocs apply to a read-only section,
8609 then we need a DT_TEXTREL entry. */
8610 if ((info->flags & DF_TEXTREL) == 0)
8611 elf_link_hash_traverse (& htab->root, aarch64_readonly_dynrelocs,
8614 if ((info->flags & DF_TEXTREL) != 0)
8616 if (!add_dynamic_entry (DT_TEXTREL, 0))
8621 #undef add_dynamic_entry
8627 elf_aarch64_update_plt_entry (bfd *output_bfd,
8628 bfd_reloc_code_real_type r_type,
8629 bfd_byte *plt_entry, bfd_vma value)
8631 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
8633 _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
8637 elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
8638 struct elf_aarch64_link_hash_table
8639 *htab, bfd *output_bfd,
8640 struct bfd_link_info *info)
8642 bfd_byte *plt_entry;
8645 bfd_vma gotplt_entry_address;
8646 bfd_vma plt_entry_address;
8647 Elf_Internal_Rela rela;
8649 asection *plt, *gotplt, *relplt;
8651 /* When building a static executable, use .iplt, .igot.plt and
8652 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8653 if (htab->root.splt != NULL)
8655 plt = htab->root.splt;
8656 gotplt = htab->root.sgotplt;
8657 relplt = htab->root.srelplt;
8661 plt = htab->root.iplt;
8662 gotplt = htab->root.igotplt;
8663 relplt = htab->root.irelplt;
8666 /* Get the index in the procedure linkage table which
8667 corresponds to this symbol. This is the index of this symbol
8668 in all the symbols for which we are making plt entries. The
8669 first entry in the procedure linkage table is reserved.
8671 Get the offset into the .got table of the entry that
8672 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
8673 bytes. The first three are reserved for the dynamic linker.
8675 For static executables, we don't reserve anything. */
8677 if (plt == htab->root.splt)
8679 plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
8680 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
8684 plt_index = h->plt.offset / htab->plt_entry_size;
8685 got_offset = plt_index * GOT_ENTRY_SIZE;
8688 plt_entry = plt->contents + h->plt.offset;
8689 plt_entry_address = plt->output_section->vma
8690 + plt->output_offset + h->plt.offset;
8691 gotplt_entry_address = gotplt->output_section->vma +
8692 gotplt->output_offset + got_offset;
8694 /* Copy in the boiler-plate for the PLTn entry. */
8695 memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE);
8697 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
8698 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
8699 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
8701 PG (gotplt_entry_address) -
8702 PG (plt_entry_address));
8704 /* Fill in the lo12 bits for the load from the pltgot. */
8705 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
8707 PG_OFFSET (gotplt_entry_address));
8709 /* Fill in the lo12 bits for the add from the pltgot entry. */
8710 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
8712 PG_OFFSET (gotplt_entry_address));
8714 /* All the GOTPLT Entries are essentially initialized to PLT0. */
8715 bfd_put_NN (output_bfd,
8716 plt->output_section->vma + plt->output_offset,
8717 gotplt->contents + got_offset);
8719 rela.r_offset = gotplt_entry_address;
8721 if (h->dynindx == -1
8722 || ((bfd_link_executable (info)
8723 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8725 && h->type == STT_GNU_IFUNC))
8727 /* If an STT_GNU_IFUNC symbol is locally defined, generate
8728 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
8729 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
8730 rela.r_addend = (h->root.u.def.value
8731 + h->root.u.def.section->output_section->vma
8732 + h->root.u.def.section->output_offset);
8736 /* Fill in the entry in the .rela.plt section. */
8737 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
8741 /* Compute the relocation entry to used based on PLT index and do
8742 not adjust reloc_count. The reloc_count has already been adjusted
8743 to account for this entry. */
8744 loc = relplt->contents + plt_index * RELOC_SIZE (htab);
8745 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
8748 /* Size sections even though they're not dynamic. We use it to setup
8749 _TLS_MODULE_BASE_, if needed. */
8752 elfNN_aarch64_always_size_sections (bfd *output_bfd,
8753 struct bfd_link_info *info)
8757 if (bfd_link_relocatable (info))
8760 tls_sec = elf_hash_table (info)->tls_sec;
8764 struct elf_link_hash_entry *tlsbase;
8766 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
8767 "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
8771 struct bfd_link_hash_entry *h = NULL;
8772 const struct elf_backend_data *bed =
8773 get_elf_backend_data (output_bfd);
8775 if (!(_bfd_generic_link_add_one_symbol
8776 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
8777 tls_sec, 0, NULL, FALSE, bed->collect, &h)))
8780 tlsbase->type = STT_TLS;
8781 tlsbase = (struct elf_link_hash_entry *) h;
8782 tlsbase->def_regular = 1;
8783 tlsbase->other = STV_HIDDEN;
8784 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
8791 /* Finish up dynamic symbol handling. We set the contents of various
8792 dynamic sections here. */
8794 elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd,
8795 struct bfd_link_info *info,
8796 struct elf_link_hash_entry *h,
8797 Elf_Internal_Sym *sym)
8799 struct elf_aarch64_link_hash_table *htab;
8800 htab = elf_aarch64_hash_table (info);
8802 if (h->plt.offset != (bfd_vma) - 1)
8804 asection *plt, *gotplt, *relplt;
8806 /* This symbol has an entry in the procedure linkage table. Set
8809 /* When building a static executable, use .iplt, .igot.plt and
8810 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8811 if (htab->root.splt != NULL)
8813 plt = htab->root.splt;
8814 gotplt = htab->root.sgotplt;
8815 relplt = htab->root.srelplt;
8819 plt = htab->root.iplt;
8820 gotplt = htab->root.igotplt;
8821 relplt = htab->root.irelplt;
8824 /* This symbol has an entry in the procedure linkage table. Set
8826 if ((h->dynindx == -1
8827 && !((h->forced_local || bfd_link_executable (info))
8829 && h->type == STT_GNU_IFUNC))
8835 elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
8836 if (!h->def_regular)
8838 /* Mark the symbol as undefined, rather than as defined in
8839 the .plt section. */
8840 sym->st_shndx = SHN_UNDEF;
8841 /* If the symbol is weak we need to clear the value.
8842 Otherwise, the PLT entry would provide a definition for
8843 the symbol even if the symbol wasn't defined anywhere,
8844 and so the symbol would never be NULL. Leave the value if
8845 there were any relocations where pointer equality matters
8846 (this is a clue for the dynamic linker, to make function
8847 pointer comparisons work between an application and shared
8849 if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
8854 if (h->got.offset != (bfd_vma) - 1
8855 && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL)
8857 Elf_Internal_Rela rela;
8860 /* This symbol has an entry in the global offset table. Set it
8862 if (htab->root.sgot == NULL || htab->root.srelgot == NULL)
8865 rela.r_offset = (htab->root.sgot->output_section->vma
8866 + htab->root.sgot->output_offset
8867 + (h->got.offset & ~(bfd_vma) 1));
8870 && h->type == STT_GNU_IFUNC)
8872 if (bfd_link_pic (info))
8874 /* Generate R_AARCH64_GLOB_DAT. */
8881 if (!h->pointer_equality_needed)
8884 /* For non-shared object, we can't use .got.plt, which
8885 contains the real function address if we need pointer
8886 equality. We load the GOT entry with the PLT entry. */
8887 plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
8888 bfd_put_NN (output_bfd, (plt->output_section->vma
8889 + plt->output_offset
8891 htab->root.sgot->contents
8892 + (h->got.offset & ~(bfd_vma) 1));
8896 else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
8898 if (!h->def_regular)
8901 BFD_ASSERT ((h->got.offset & 1) != 0);
8902 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
8903 rela.r_addend = (h->root.u.def.value
8904 + h->root.u.def.section->output_section->vma
8905 + h->root.u.def.section->output_offset);
8910 BFD_ASSERT ((h->got.offset & 1) == 0);
8911 bfd_put_NN (output_bfd, (bfd_vma) 0,
8912 htab->root.sgot->contents + h->got.offset);
8913 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT));
8917 loc = htab->root.srelgot->contents;
8918 loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab);
8919 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
8924 Elf_Internal_Rela rela;
8927 /* This symbol needs a copy reloc. Set it up. */
8929 if (h->dynindx == -1
8930 || (h->root.type != bfd_link_hash_defined
8931 && h->root.type != bfd_link_hash_defweak)
8932 || htab->srelbss == NULL)
8935 rela.r_offset = (h->root.u.def.value
8936 + h->root.u.def.section->output_section->vma
8937 + h->root.u.def.section->output_offset);
8938 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY));
8940 loc = htab->srelbss->contents;
8941 loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab);
8942 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
8945 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
8946 be NULL for local symbols. */
8948 && (h == elf_hash_table (info)->hdynamic
8949 || h == elf_hash_table (info)->hgot))
8950 sym->st_shndx = SHN_ABS;
8955 /* Finish up local dynamic symbol handling. We set the contents of
8956 various dynamic sections here. */
8959 elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
8961 struct elf_link_hash_entry *h
8962 = (struct elf_link_hash_entry *) *slot;
8963 struct bfd_link_info *info
8964 = (struct bfd_link_info *) inf;
8966 return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
8971 elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
8972 struct elf_aarch64_link_hash_table
8975 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
8976 small and large plts and at the minute just generates
8979 /* PLT0 of the small PLT looks like this in ELF64 -
8980 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
8981 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
8982 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
8984 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
8985 // GOTPLT entry for this.
8987 PLT0 will be slightly different in ELF32 due to different got entry
8990 bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
8994 memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry,
8996 elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize =
8999 plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma
9000 + htab->root.sgotplt->output_offset
9001 + GOT_ENTRY_SIZE * 2);
9003 plt_base = htab->root.splt->output_section->vma +
9004 htab->root.splt->output_offset;
9006 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9007 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9008 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9009 htab->root.splt->contents + 4,
9010 PG (plt_got_2nd_ent) - PG (plt_base + 4));
9012 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
9013 htab->root.splt->contents + 8,
9014 PG_OFFSET (plt_got_2nd_ent));
9016 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
9017 htab->root.splt->contents + 12,
9018 PG_OFFSET (plt_got_2nd_ent));
9022 elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
9023 struct bfd_link_info *info)
9025 struct elf_aarch64_link_hash_table *htab;
9029 htab = elf_aarch64_hash_table (info);
9030 dynobj = htab->root.dynobj;
9031 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9033 if (htab->root.dynamic_sections_created)
9035 ElfNN_External_Dyn *dyncon, *dynconend;
9037 if (sdyn == NULL || htab->root.sgot == NULL)
9040 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
9041 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
9042 for (; dyncon < dynconend; dyncon++)
9044 Elf_Internal_Dyn dyn;
9047 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
9055 s = htab->root.sgotplt;
9056 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9060 dyn.d_un.d_ptr = htab->root.srelplt->output_section->vma;
9064 s = htab->root.srelplt;
9065 dyn.d_un.d_val = s->size;
9069 /* The procedure linkage table relocs (DT_JMPREL) should
9070 not be included in the overall relocs (DT_RELA).
9071 Therefore, we override the DT_RELASZ entry here to
9072 make it not include the JMPREL relocs. Since the
9073 linker script arranges for .rela.plt to follow all
9074 other relocation sections, we don't have to worry
9075 about changing the DT_RELA entry. */
9076 if (htab->root.srelplt != NULL)
9078 s = htab->root.srelplt;
9079 dyn.d_un.d_val -= s->size;
9083 case DT_TLSDESC_PLT:
9084 s = htab->root.splt;
9085 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9086 + htab->tlsdesc_plt;
9089 case DT_TLSDESC_GOT:
9090 s = htab->root.sgot;
9091 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9092 + htab->dt_tlsdesc_got;
9096 bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon);
9101 /* Fill in the special first entry in the procedure linkage table. */
9102 if (htab->root.splt && htab->root.splt->size > 0)
9104 elfNN_aarch64_init_small_plt0_entry (output_bfd, htab);
9106 elf_section_data (htab->root.splt->output_section)->
9107 this_hdr.sh_entsize = htab->plt_entry_size;
9110 if (htab->tlsdesc_plt)
9112 bfd_put_NN (output_bfd, (bfd_vma) 0,
9113 htab->root.sgot->contents + htab->dt_tlsdesc_got);
9115 memcpy (htab->root.splt->contents + htab->tlsdesc_plt,
9116 elfNN_aarch64_tlsdesc_small_plt_entry,
9117 sizeof (elfNN_aarch64_tlsdesc_small_plt_entry));
9120 bfd_vma adrp1_addr =
9121 htab->root.splt->output_section->vma
9122 + htab->root.splt->output_offset + htab->tlsdesc_plt + 4;
9124 bfd_vma adrp2_addr = adrp1_addr + 4;
9127 htab->root.sgot->output_section->vma
9128 + htab->root.sgot->output_offset;
9130 bfd_vma pltgot_addr =
9131 htab->root.sgotplt->output_section->vma
9132 + htab->root.sgotplt->output_offset;
9134 bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got;
9136 bfd_byte *plt_entry =
9137 htab->root.splt->contents + htab->tlsdesc_plt;
9139 /* adrp x2, DT_TLSDESC_GOT */
9140 elf_aarch64_update_plt_entry (output_bfd,
9141 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9143 (PG (dt_tlsdesc_got)
9144 - PG (adrp1_addr)));
9147 elf_aarch64_update_plt_entry (output_bfd,
9148 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9151 - PG (adrp2_addr)));
9153 /* ldr x2, [x2, #0] */
9154 elf_aarch64_update_plt_entry (output_bfd,
9155 BFD_RELOC_AARCH64_LDSTNN_LO12,
9157 PG_OFFSET (dt_tlsdesc_got));
9160 elf_aarch64_update_plt_entry (output_bfd,
9161 BFD_RELOC_AARCH64_ADD_LO12,
9163 PG_OFFSET (pltgot_addr));
9168 if (htab->root.sgotplt)
9170 if (bfd_is_abs_section (htab->root.sgotplt->output_section))
9172 (*_bfd_error_handler)
9173 (_("discarded output section: `%A'"), htab->root.sgotplt);
9177 /* Fill in the first three entries in the global offset table. */
9178 if (htab->root.sgotplt->size > 0)
9180 bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
9182 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
9183 bfd_put_NN (output_bfd,
9185 htab->root.sgotplt->contents + GOT_ENTRY_SIZE);
9186 bfd_put_NN (output_bfd,
9188 htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
9191 if (htab->root.sgot)
9193 if (htab->root.sgot->size > 0)
9196 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
9197 bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
9201 elf_section_data (htab->root.sgotplt->output_section)->
9202 this_hdr.sh_entsize = GOT_ENTRY_SIZE;
9205 if (htab->root.sgot && htab->root.sgot->size > 0)
9206 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
9209 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9210 htab_traverse (htab->loc_hash_table,
9211 elfNN_aarch64_finish_local_dynamic_symbol,
9217 /* Return address for Ith PLT stub in section PLT, for relocation REL
9218 or (bfd_vma) -1 if it should not be included. */
9221 elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt,
9222 const arelent *rel ATTRIBUTE_UNUSED)
9224 return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE;
9228 /* We use this so we can override certain functions
9229 (though currently we don't). */
9231 const struct elf_size_info elfNN_aarch64_size_info =
9233 sizeof (ElfNN_External_Ehdr),
9234 sizeof (ElfNN_External_Phdr),
9235 sizeof (ElfNN_External_Shdr),
9236 sizeof (ElfNN_External_Rel),
9237 sizeof (ElfNN_External_Rela),
9238 sizeof (ElfNN_External_Sym),
9239 sizeof (ElfNN_External_Dyn),
9240 sizeof (Elf_External_Note),
9241 4, /* Hash table entry size. */
9242 1, /* Internal relocs per external relocs. */
9243 ARCH_SIZE, /* Arch size. */
9244 LOG_FILE_ALIGN, /* Log_file_align. */
9245 ELFCLASSNN, EV_CURRENT,
9246 bfd_elfNN_write_out_phdrs,
9247 bfd_elfNN_write_shdrs_and_ehdr,
9248 bfd_elfNN_checksum_contents,
9249 bfd_elfNN_write_relocs,
9250 bfd_elfNN_swap_symbol_in,
9251 bfd_elfNN_swap_symbol_out,
9252 bfd_elfNN_slurp_reloc_table,
9253 bfd_elfNN_slurp_symbol_table,
9254 bfd_elfNN_swap_dyn_in,
9255 bfd_elfNN_swap_dyn_out,
9256 bfd_elfNN_swap_reloc_in,
9257 bfd_elfNN_swap_reloc_out,
9258 bfd_elfNN_swap_reloca_in,
9259 bfd_elfNN_swap_reloca_out
9262 #define ELF_ARCH bfd_arch_aarch64
9263 #define ELF_MACHINE_CODE EM_AARCH64
9264 #define ELF_MAXPAGESIZE 0x10000
9265 #define ELF_MINPAGESIZE 0x1000
9266 #define ELF_COMMONPAGESIZE 0x1000
9268 #define bfd_elfNN_close_and_cleanup \
9269 elfNN_aarch64_close_and_cleanup
9271 #define bfd_elfNN_bfd_free_cached_info \
9272 elfNN_aarch64_bfd_free_cached_info
9274 #define bfd_elfNN_bfd_is_target_special_symbol \
9275 elfNN_aarch64_is_target_special_symbol
9277 #define bfd_elfNN_bfd_link_hash_table_create \
9278 elfNN_aarch64_link_hash_table_create
9280 #define bfd_elfNN_bfd_merge_private_bfd_data \
9281 elfNN_aarch64_merge_private_bfd_data
9283 #define bfd_elfNN_bfd_print_private_bfd_data \
9284 elfNN_aarch64_print_private_bfd_data
9286 #define bfd_elfNN_bfd_reloc_type_lookup \
9287 elfNN_aarch64_reloc_type_lookup
9289 #define bfd_elfNN_bfd_reloc_name_lookup \
9290 elfNN_aarch64_reloc_name_lookup
9292 #define bfd_elfNN_bfd_set_private_flags \
9293 elfNN_aarch64_set_private_flags
9295 #define bfd_elfNN_find_inliner_info \
9296 elfNN_aarch64_find_inliner_info
9298 #define bfd_elfNN_find_nearest_line \
9299 elfNN_aarch64_find_nearest_line
9301 #define bfd_elfNN_mkobject \
9302 elfNN_aarch64_mkobject
9304 #define bfd_elfNN_new_section_hook \
9305 elfNN_aarch64_new_section_hook
9307 #define elf_backend_adjust_dynamic_symbol \
9308 elfNN_aarch64_adjust_dynamic_symbol
9310 #define elf_backend_always_size_sections \
9311 elfNN_aarch64_always_size_sections
9313 #define elf_backend_check_relocs \
9314 elfNN_aarch64_check_relocs
9316 #define elf_backend_copy_indirect_symbol \
9317 elfNN_aarch64_copy_indirect_symbol
9319 /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
9320 to them in our hash. */
9321 #define elf_backend_create_dynamic_sections \
9322 elfNN_aarch64_create_dynamic_sections
9324 #define elf_backend_init_index_section \
9325 _bfd_elf_init_2_index_sections
9327 #define elf_backend_finish_dynamic_sections \
9328 elfNN_aarch64_finish_dynamic_sections
9330 #define elf_backend_finish_dynamic_symbol \
9331 elfNN_aarch64_finish_dynamic_symbol
9333 #define elf_backend_gc_sweep_hook \
9334 elfNN_aarch64_gc_sweep_hook
9336 #define elf_backend_object_p \
9337 elfNN_aarch64_object_p
9339 #define elf_backend_output_arch_local_syms \
9340 elfNN_aarch64_output_arch_local_syms
9342 #define elf_backend_plt_sym_val \
9343 elfNN_aarch64_plt_sym_val
9345 #define elf_backend_post_process_headers \
9346 elfNN_aarch64_post_process_headers
9348 #define elf_backend_relocate_section \
9349 elfNN_aarch64_relocate_section
9351 #define elf_backend_reloc_type_class \
9352 elfNN_aarch64_reloc_type_class
9354 #define elf_backend_section_from_shdr \
9355 elfNN_aarch64_section_from_shdr
9357 #define elf_backend_size_dynamic_sections \
9358 elfNN_aarch64_size_dynamic_sections
9360 #define elf_backend_size_info \
9361 elfNN_aarch64_size_info
9363 #define elf_backend_write_section \
9364 elfNN_aarch64_write_section
9366 #define elf_backend_can_refcount 1
9367 #define elf_backend_can_gc_sections 1
9368 #define elf_backend_plt_readonly 1
9369 #define elf_backend_want_got_plt 1
9370 #define elf_backend_want_plt_sym 0
9371 #define elf_backend_may_use_rel_p 0
9372 #define elf_backend_may_use_rela_p 1
9373 #define elf_backend_default_use_rela_p 1
9374 #define elf_backend_rela_normal 1
9375 #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
9376 #define elf_backend_default_execstack 0
9377 #define elf_backend_extern_protected_data 1
9379 #undef elf_backend_obj_attrs_section
9380 #define elf_backend_obj_attrs_section ".ARM.attributes"
9382 #include "elfNN-target.h"
9384 /* CloudABI support. */
9386 #undef TARGET_LITTLE_SYM
9387 #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
9388 #undef TARGET_LITTLE_NAME
9389 #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
9390 #undef TARGET_BIG_SYM
9391 #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
9392 #undef TARGET_BIG_NAME
9393 #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
9396 #define ELF_OSABI ELFOSABI_CLOUDABI
9399 #define elfNN_bed elfNN_aarch64_cloudabi_bed
9401 #include "elfNN-target.h"