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. */
342 /* Deprecated, but retained for backwards compatibility. */
343 HOWTO64 (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 */
356 HOWTO (R_AARCH64_NONE
, /* type */
358 3, /* size (0 = byte, 1 = short, 2 = long) */
360 FALSE
, /* pc_relative */
362 complain_overflow_dont
, /* complain_on_overflow */
363 bfd_elf_generic_reloc
, /* special_function */
364 "R_AARCH64_NONE", /* name */
365 FALSE
, /* partial_inplace */
368 FALSE
), /* pcrel_offset */
371 HOWTO64 (AARCH64_R (ABS64
), /* type */
373 4, /* size (4 = long long) */
375 FALSE
, /* pc_relative */
377 complain_overflow_unsigned
, /* complain_on_overflow */
378 bfd_elf_generic_reloc
, /* special_function */
379 AARCH64_R_STR (ABS64
), /* name */
380 FALSE
, /* partial_inplace */
381 ALL_ONES
, /* src_mask */
382 ALL_ONES
, /* dst_mask */
383 FALSE
), /* pcrel_offset */
386 HOWTO (AARCH64_R (ABS32
), /* type */
388 2, /* size (0 = byte, 1 = short, 2 = long) */
390 FALSE
, /* pc_relative */
392 complain_overflow_unsigned
, /* complain_on_overflow */
393 bfd_elf_generic_reloc
, /* special_function */
394 AARCH64_R_STR (ABS32
), /* name */
395 FALSE
, /* partial_inplace */
396 0xffffffff, /* src_mask */
397 0xffffffff, /* dst_mask */
398 FALSE
), /* pcrel_offset */
401 HOWTO (AARCH64_R (ABS16
), /* type */
403 1, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE
, /* pc_relative */
407 complain_overflow_unsigned
, /* complain_on_overflow */
408 bfd_elf_generic_reloc
, /* special_function */
409 AARCH64_R_STR (ABS16
), /* name */
410 FALSE
, /* partial_inplace */
411 0xffff, /* src_mask */
412 0xffff, /* dst_mask */
413 FALSE
), /* pcrel_offset */
415 /* .xword: (S+A-P) */
416 HOWTO64 (AARCH64_R (PREL64
), /* type */
418 4, /* size (4 = long long) */
420 TRUE
, /* pc_relative */
422 complain_overflow_signed
, /* complain_on_overflow */
423 bfd_elf_generic_reloc
, /* special_function */
424 AARCH64_R_STR (PREL64
), /* name */
425 FALSE
, /* partial_inplace */
426 ALL_ONES
, /* src_mask */
427 ALL_ONES
, /* dst_mask */
428 TRUE
), /* pcrel_offset */
431 HOWTO (AARCH64_R (PREL32
), /* type */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
435 TRUE
, /* pc_relative */
437 complain_overflow_signed
, /* complain_on_overflow */
438 bfd_elf_generic_reloc
, /* special_function */
439 AARCH64_R_STR (PREL32
), /* name */
440 FALSE
, /* partial_inplace */
441 0xffffffff, /* src_mask */
442 0xffffffff, /* dst_mask */
443 TRUE
), /* pcrel_offset */
446 HOWTO (AARCH64_R (PREL16
), /* type */
448 1, /* size (0 = byte, 1 = short, 2 = long) */
450 TRUE
, /* pc_relative */
452 complain_overflow_signed
, /* complain_on_overflow */
453 bfd_elf_generic_reloc
, /* special_function */
454 AARCH64_R_STR (PREL16
), /* name */
455 FALSE
, /* partial_inplace */
456 0xffff, /* src_mask */
457 0xffff, /* dst_mask */
458 TRUE
), /* pcrel_offset */
460 /* Group relocations to create a 16, 32, 48 or 64 bit
461 unsigned data or abs address inline. */
463 /* MOVZ: ((S+A) >> 0) & 0xffff */
464 HOWTO (AARCH64_R (MOVW_UABS_G0
), /* type */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
468 FALSE
, /* pc_relative */
470 complain_overflow_unsigned
, /* complain_on_overflow */
471 bfd_elf_generic_reloc
, /* special_function */
472 AARCH64_R_STR (MOVW_UABS_G0
), /* name */
473 FALSE
, /* partial_inplace */
474 0xffff, /* src_mask */
475 0xffff, /* dst_mask */
476 FALSE
), /* pcrel_offset */
478 /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
479 HOWTO (AARCH64_R (MOVW_UABS_G0_NC
), /* type */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
483 FALSE
, /* pc_relative */
485 complain_overflow_dont
, /* complain_on_overflow */
486 bfd_elf_generic_reloc
, /* special_function */
487 AARCH64_R_STR (MOVW_UABS_G0_NC
), /* name */
488 FALSE
, /* partial_inplace */
489 0xffff, /* src_mask */
490 0xffff, /* dst_mask */
491 FALSE
), /* pcrel_offset */
493 /* MOVZ: ((S+A) >> 16) & 0xffff */
494 HOWTO (AARCH64_R (MOVW_UABS_G1
), /* type */
496 2, /* size (0 = byte, 1 = short, 2 = long) */
498 FALSE
, /* pc_relative */
500 complain_overflow_unsigned
, /* complain_on_overflow */
501 bfd_elf_generic_reloc
, /* special_function */
502 AARCH64_R_STR (MOVW_UABS_G1
), /* name */
503 FALSE
, /* partial_inplace */
504 0xffff, /* src_mask */
505 0xffff, /* dst_mask */
506 FALSE
), /* pcrel_offset */
508 /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
509 HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC
), /* type */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
513 FALSE
, /* pc_relative */
515 complain_overflow_dont
, /* complain_on_overflow */
516 bfd_elf_generic_reloc
, /* special_function */
517 AARCH64_R_STR (MOVW_UABS_G1_NC
), /* name */
518 FALSE
, /* partial_inplace */
519 0xffff, /* src_mask */
520 0xffff, /* dst_mask */
521 FALSE
), /* pcrel_offset */
523 /* MOVZ: ((S+A) >> 32) & 0xffff */
524 HOWTO64 (AARCH64_R (MOVW_UABS_G2
), /* type */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE
, /* pc_relative */
530 complain_overflow_unsigned
, /* complain_on_overflow */
531 bfd_elf_generic_reloc
, /* special_function */
532 AARCH64_R_STR (MOVW_UABS_G2
), /* name */
533 FALSE
, /* partial_inplace */
534 0xffff, /* src_mask */
535 0xffff, /* dst_mask */
536 FALSE
), /* pcrel_offset */
538 /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
539 HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC
), /* type */
541 2, /* size (0 = byte, 1 = short, 2 = long) */
543 FALSE
, /* pc_relative */
545 complain_overflow_dont
, /* complain_on_overflow */
546 bfd_elf_generic_reloc
, /* special_function */
547 AARCH64_R_STR (MOVW_UABS_G2_NC
), /* name */
548 FALSE
, /* partial_inplace */
549 0xffff, /* src_mask */
550 0xffff, /* dst_mask */
551 FALSE
), /* pcrel_offset */
553 /* MOVZ: ((S+A) >> 48) & 0xffff */
554 HOWTO64 (AARCH64_R (MOVW_UABS_G3
), /* type */
556 2, /* size (0 = byte, 1 = short, 2 = long) */
558 FALSE
, /* pc_relative */
560 complain_overflow_unsigned
, /* complain_on_overflow */
561 bfd_elf_generic_reloc
, /* special_function */
562 AARCH64_R_STR (MOVW_UABS_G3
), /* name */
563 FALSE
, /* partial_inplace */
564 0xffff, /* src_mask */
565 0xffff, /* dst_mask */
566 FALSE
), /* pcrel_offset */
568 /* Group relocations to create high part of a 16, 32, 48 or 64 bit
569 signed data or abs address inline. Will change instruction
570 to MOVN or MOVZ depending on sign of calculated value. */
572 /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
573 HOWTO (AARCH64_R (MOVW_SABS_G0
), /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE
, /* pc_relative */
579 complain_overflow_signed
, /* complain_on_overflow */
580 bfd_elf_generic_reloc
, /* special_function */
581 AARCH64_R_STR (MOVW_SABS_G0
), /* name */
582 FALSE
, /* partial_inplace */
583 0xffff, /* src_mask */
584 0xffff, /* dst_mask */
585 FALSE
), /* pcrel_offset */
587 /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
588 HOWTO64 (AARCH64_R (MOVW_SABS_G1
), /* type */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
592 FALSE
, /* pc_relative */
594 complain_overflow_signed
, /* complain_on_overflow */
595 bfd_elf_generic_reloc
, /* special_function */
596 AARCH64_R_STR (MOVW_SABS_G1
), /* name */
597 FALSE
, /* partial_inplace */
598 0xffff, /* src_mask */
599 0xffff, /* dst_mask */
600 FALSE
), /* pcrel_offset */
602 /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
603 HOWTO64 (AARCH64_R (MOVW_SABS_G2
), /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 FALSE
, /* pc_relative */
609 complain_overflow_signed
, /* complain_on_overflow */
610 bfd_elf_generic_reloc
, /* special_function */
611 AARCH64_R_STR (MOVW_SABS_G2
), /* name */
612 FALSE
, /* partial_inplace */
613 0xffff, /* src_mask */
614 0xffff, /* dst_mask */
615 FALSE
), /* pcrel_offset */
617 /* Relocations to generate 19, 21 and 33 bit PC-relative load/store
618 addresses: PG(x) is (x & ~0xfff). */
620 /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
621 HOWTO (AARCH64_R (LD_PREL_LO19
), /* type */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
625 TRUE
, /* pc_relative */
627 complain_overflow_signed
, /* complain_on_overflow */
628 bfd_elf_generic_reloc
, /* special_function */
629 AARCH64_R_STR (LD_PREL_LO19
), /* name */
630 FALSE
, /* partial_inplace */
631 0x7ffff, /* src_mask */
632 0x7ffff, /* dst_mask */
633 TRUE
), /* pcrel_offset */
635 /* ADR: (S+A-P) & 0x1fffff */
636 HOWTO (AARCH64_R (ADR_PREL_LO21
), /* type */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
640 TRUE
, /* pc_relative */
642 complain_overflow_signed
, /* complain_on_overflow */
643 bfd_elf_generic_reloc
, /* special_function */
644 AARCH64_R_STR (ADR_PREL_LO21
), /* name */
645 FALSE
, /* partial_inplace */
646 0x1fffff, /* src_mask */
647 0x1fffff, /* dst_mask */
648 TRUE
), /* pcrel_offset */
650 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
651 HOWTO (AARCH64_R (ADR_PREL_PG_HI21
), /* type */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
655 TRUE
, /* pc_relative */
657 complain_overflow_signed
, /* complain_on_overflow */
658 bfd_elf_generic_reloc
, /* special_function */
659 AARCH64_R_STR (ADR_PREL_PG_HI21
), /* name */
660 FALSE
, /* partial_inplace */
661 0x1fffff, /* src_mask */
662 0x1fffff, /* dst_mask */
663 TRUE
), /* pcrel_offset */
665 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
666 HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC
), /* type */
668 2, /* size (0 = byte, 1 = short, 2 = long) */
670 TRUE
, /* pc_relative */
672 complain_overflow_dont
, /* complain_on_overflow */
673 bfd_elf_generic_reloc
, /* special_function */
674 AARCH64_R_STR (ADR_PREL_PG_HI21_NC
), /* name */
675 FALSE
, /* partial_inplace */
676 0x1fffff, /* src_mask */
677 0x1fffff, /* dst_mask */
678 TRUE
), /* pcrel_offset */
680 /* ADD: (S+A) & 0xfff [no overflow check] */
681 HOWTO (AARCH64_R (ADD_ABS_LO12_NC
), /* type */
683 2, /* size (0 = byte, 1 = short, 2 = long) */
685 FALSE
, /* pc_relative */
687 complain_overflow_dont
, /* complain_on_overflow */
688 bfd_elf_generic_reloc
, /* special_function */
689 AARCH64_R_STR (ADD_ABS_LO12_NC
), /* name */
690 FALSE
, /* partial_inplace */
691 0x3ffc00, /* src_mask */
692 0x3ffc00, /* dst_mask */
693 FALSE
), /* pcrel_offset */
695 /* LD/ST8: (S+A) & 0xfff */
696 HOWTO (AARCH64_R (LDST8_ABS_LO12_NC
), /* type */
698 2, /* size (0 = byte, 1 = short, 2 = long) */
700 FALSE
, /* pc_relative */
702 complain_overflow_dont
, /* complain_on_overflow */
703 bfd_elf_generic_reloc
, /* special_function */
704 AARCH64_R_STR (LDST8_ABS_LO12_NC
), /* name */
705 FALSE
, /* partial_inplace */
706 0xfff, /* src_mask */
707 0xfff, /* dst_mask */
708 FALSE
), /* pcrel_offset */
710 /* Relocations for control-flow instructions. */
712 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
713 HOWTO (AARCH64_R (TSTBR14
), /* type */
715 2, /* size (0 = byte, 1 = short, 2 = long) */
717 TRUE
, /* pc_relative */
719 complain_overflow_signed
, /* complain_on_overflow */
720 bfd_elf_generic_reloc
, /* special_function */
721 AARCH64_R_STR (TSTBR14
), /* name */
722 FALSE
, /* partial_inplace */
723 0x3fff, /* src_mask */
724 0x3fff, /* dst_mask */
725 TRUE
), /* pcrel_offset */
727 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
728 HOWTO (AARCH64_R (CONDBR19
), /* type */
730 2, /* size (0 = byte, 1 = short, 2 = long) */
732 TRUE
, /* pc_relative */
734 complain_overflow_signed
, /* complain_on_overflow */
735 bfd_elf_generic_reloc
, /* special_function */
736 AARCH64_R_STR (CONDBR19
), /* name */
737 FALSE
, /* partial_inplace */
738 0x7ffff, /* src_mask */
739 0x7ffff, /* dst_mask */
740 TRUE
), /* pcrel_offset */
742 /* B: ((S+A-P) >> 2) & 0x3ffffff */
743 HOWTO (AARCH64_R (JUMP26
), /* type */
745 2, /* size (0 = byte, 1 = short, 2 = long) */
747 TRUE
, /* pc_relative */
749 complain_overflow_signed
, /* complain_on_overflow */
750 bfd_elf_generic_reloc
, /* special_function */
751 AARCH64_R_STR (JUMP26
), /* name */
752 FALSE
, /* partial_inplace */
753 0x3ffffff, /* src_mask */
754 0x3ffffff, /* dst_mask */
755 TRUE
), /* pcrel_offset */
757 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
758 HOWTO (AARCH64_R (CALL26
), /* type */
760 2, /* size (0 = byte, 1 = short, 2 = long) */
762 TRUE
, /* pc_relative */
764 complain_overflow_signed
, /* complain_on_overflow */
765 bfd_elf_generic_reloc
, /* special_function */
766 AARCH64_R_STR (CALL26
), /* name */
767 FALSE
, /* partial_inplace */
768 0x3ffffff, /* src_mask */
769 0x3ffffff, /* dst_mask */
770 TRUE
), /* pcrel_offset */
772 /* LD/ST16: (S+A) & 0xffe */
773 HOWTO (AARCH64_R (LDST16_ABS_LO12_NC
), /* type */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
777 FALSE
, /* pc_relative */
779 complain_overflow_dont
, /* complain_on_overflow */
780 bfd_elf_generic_reloc
, /* special_function */
781 AARCH64_R_STR (LDST16_ABS_LO12_NC
), /* name */
782 FALSE
, /* partial_inplace */
783 0xffe, /* src_mask */
784 0xffe, /* dst_mask */
785 FALSE
), /* pcrel_offset */
787 /* LD/ST32: (S+A) & 0xffc */
788 HOWTO (AARCH64_R (LDST32_ABS_LO12_NC
), /* type */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
792 FALSE
, /* pc_relative */
794 complain_overflow_dont
, /* complain_on_overflow */
795 bfd_elf_generic_reloc
, /* special_function */
796 AARCH64_R_STR (LDST32_ABS_LO12_NC
), /* name */
797 FALSE
, /* partial_inplace */
798 0xffc, /* src_mask */
799 0xffc, /* dst_mask */
800 FALSE
), /* pcrel_offset */
802 /* LD/ST64: (S+A) & 0xff8 */
803 HOWTO (AARCH64_R (LDST64_ABS_LO12_NC
), /* type */
805 2, /* size (0 = byte, 1 = short, 2 = long) */
807 FALSE
, /* pc_relative */
809 complain_overflow_dont
, /* complain_on_overflow */
810 bfd_elf_generic_reloc
, /* special_function */
811 AARCH64_R_STR (LDST64_ABS_LO12_NC
), /* name */
812 FALSE
, /* partial_inplace */
813 0xff8, /* src_mask */
814 0xff8, /* dst_mask */
815 FALSE
), /* pcrel_offset */
817 /* LD/ST128: (S+A) & 0xff0 */
818 HOWTO (AARCH64_R (LDST128_ABS_LO12_NC
), /* type */
820 2, /* size (0 = byte, 1 = short, 2 = long) */
822 FALSE
, /* pc_relative */
824 complain_overflow_dont
, /* complain_on_overflow */
825 bfd_elf_generic_reloc
, /* special_function */
826 AARCH64_R_STR (LDST128_ABS_LO12_NC
), /* name */
827 FALSE
, /* partial_inplace */
828 0xff0, /* src_mask */
829 0xff0, /* dst_mask */
830 FALSE
), /* pcrel_offset */
832 /* Set a load-literal immediate field to bits
833 0x1FFFFC of G(S)-P */
834 HOWTO (AARCH64_R (GOT_LD_PREL19
), /* type */
836 2, /* size (0 = byte,1 = short,2 = long) */
838 TRUE
, /* pc_relative */
840 complain_overflow_signed
, /* complain_on_overflow */
841 bfd_elf_generic_reloc
, /* special_function */
842 AARCH64_R_STR (GOT_LD_PREL19
), /* name */
843 FALSE
, /* partial_inplace */
844 0xffffe0, /* src_mask */
845 0xffffe0, /* dst_mask */
846 TRUE
), /* pcrel_offset */
848 /* Get to the page for the GOT entry for the symbol
849 (G(S) - P) using an ADRP instruction. */
850 HOWTO (AARCH64_R (ADR_GOT_PAGE
), /* type */
852 2, /* size (0 = byte, 1 = short, 2 = long) */
854 TRUE
, /* pc_relative */
856 complain_overflow_dont
, /* complain_on_overflow */
857 bfd_elf_generic_reloc
, /* special_function */
858 AARCH64_R_STR (ADR_GOT_PAGE
), /* name */
859 FALSE
, /* partial_inplace */
860 0x1fffff, /* src_mask */
861 0x1fffff, /* dst_mask */
862 TRUE
), /* pcrel_offset */
864 /* LD64: GOT offset G(S) & 0xff8 */
865 HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC
), /* type */
867 2, /* size (0 = byte, 1 = short, 2 = long) */
869 FALSE
, /* pc_relative */
871 complain_overflow_dont
, /* complain_on_overflow */
872 bfd_elf_generic_reloc
, /* special_function */
873 AARCH64_R_STR (LD64_GOT_LO12_NC
), /* name */
874 FALSE
, /* partial_inplace */
875 0xff8, /* src_mask */
876 0xff8, /* dst_mask */
877 FALSE
), /* pcrel_offset */
879 /* LD32: GOT offset G(S) & 0xffc */
880 HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC
), /* type */
882 2, /* size (0 = byte, 1 = short, 2 = long) */
884 FALSE
, /* pc_relative */
886 complain_overflow_dont
, /* complain_on_overflow */
887 bfd_elf_generic_reloc
, /* special_function */
888 AARCH64_R_STR (LD32_GOT_LO12_NC
), /* name */
889 FALSE
, /* partial_inplace */
890 0xffc, /* src_mask */
891 0xffc, /* dst_mask */
892 FALSE
), /* pcrel_offset */
894 /* Lower 16 bits of GOT offset for the symbol. */
895 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC
), /* type */
897 2, /* size (0 = byte, 1 = short, 2 = long) */
899 FALSE
, /* pc_relative */
901 complain_overflow_dont
, /* complain_on_overflow */
902 bfd_elf_generic_reloc
, /* special_function */
903 AARCH64_R_STR (MOVW_GOTOFF_G0_NC
), /* name */
904 FALSE
, /* partial_inplace */
905 0xffff, /* src_mask */
906 0xffff, /* dst_mask */
907 FALSE
), /* pcrel_offset */
909 /* Higher 16 bits of GOT offset for the symbol. */
910 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1
), /* type */
912 2, /* size (0 = byte, 1 = short, 2 = long) */
914 FALSE
, /* pc_relative */
916 complain_overflow_unsigned
, /* complain_on_overflow */
917 bfd_elf_generic_reloc
, /* special_function */
918 AARCH64_R_STR (MOVW_GOTOFF_G1
), /* name */
919 FALSE
, /* partial_inplace */
920 0xffff, /* src_mask */
921 0xffff, /* dst_mask */
922 FALSE
), /* pcrel_offset */
924 /* LD64: GOT offset for the symbol. */
925 HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15
), /* type */
927 2, /* size (0 = byte, 1 = short, 2 = long) */
929 FALSE
, /* pc_relative */
931 complain_overflow_unsigned
, /* complain_on_overflow */
932 bfd_elf_generic_reloc
, /* special_function */
933 AARCH64_R_STR (LD64_GOTOFF_LO15
), /* name */
934 FALSE
, /* partial_inplace */
935 0x7ff8, /* src_mask */
936 0x7ff8, /* dst_mask */
937 FALSE
), /* pcrel_offset */
939 /* LD32: GOT offset to the page address of GOT table.
940 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
941 HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14
), /* type */
943 2, /* size (0 = byte, 1 = short, 2 = long) */
945 FALSE
, /* pc_relative */
947 complain_overflow_unsigned
, /* complain_on_overflow */
948 bfd_elf_generic_reloc
, /* special_function */
949 AARCH64_R_STR (LD32_GOTPAGE_LO14
), /* name */
950 FALSE
, /* partial_inplace */
951 0x5ffc, /* src_mask */
952 0x5ffc, /* dst_mask */
953 FALSE
), /* pcrel_offset */
955 /* LD64: GOT offset to the page address of GOT table.
956 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
957 HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15
), /* type */
959 2, /* size (0 = byte, 1 = short, 2 = long) */
961 FALSE
, /* pc_relative */
963 complain_overflow_unsigned
, /* complain_on_overflow */
964 bfd_elf_generic_reloc
, /* special_function */
965 AARCH64_R_STR (LD64_GOTPAGE_LO15
), /* name */
966 FALSE
, /* partial_inplace */
967 0x7ff8, /* src_mask */
968 0x7ff8, /* dst_mask */
969 FALSE
), /* pcrel_offset */
971 /* Get to the page for the GOT entry for the symbol
972 (G(S) - P) using an ADRP instruction. */
973 HOWTO (AARCH64_R (TLSGD_ADR_PAGE21
), /* type */
975 2, /* size (0 = byte, 1 = short, 2 = long) */
977 TRUE
, /* pc_relative */
979 complain_overflow_dont
, /* complain_on_overflow */
980 bfd_elf_generic_reloc
, /* special_function */
981 AARCH64_R_STR (TLSGD_ADR_PAGE21
), /* name */
982 FALSE
, /* partial_inplace */
983 0x1fffff, /* src_mask */
984 0x1fffff, /* dst_mask */
985 TRUE
), /* pcrel_offset */
987 HOWTO (AARCH64_R (TLSGD_ADR_PREL21
), /* type */
989 2, /* size (0 = byte, 1 = short, 2 = long) */
991 TRUE
, /* pc_relative */
993 complain_overflow_dont
, /* complain_on_overflow */
994 bfd_elf_generic_reloc
, /* special_function */
995 AARCH64_R_STR (TLSGD_ADR_PREL21
), /* name */
996 FALSE
, /* partial_inplace */
997 0x1fffff, /* src_mask */
998 0x1fffff, /* dst_mask */
999 TRUE
), /* pcrel_offset */
1001 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1002 HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC
), /* type */
1004 2, /* size (0 = byte, 1 = short, 2 = long) */
1006 FALSE
, /* pc_relative */
1008 complain_overflow_dont
, /* complain_on_overflow */
1009 bfd_elf_generic_reloc
, /* special_function */
1010 AARCH64_R_STR (TLSGD_ADD_LO12_NC
), /* name */
1011 FALSE
, /* partial_inplace */
1012 0xfff, /* src_mask */
1013 0xfff, /* dst_mask */
1014 FALSE
), /* pcrel_offset */
1016 /* Lower 16 bits of GOT offset to tls_index. */
1017 HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC
), /* type */
1019 2, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE
, /* pc_relative */
1023 complain_overflow_dont
, /* complain_on_overflow */
1024 bfd_elf_generic_reloc
, /* special_function */
1025 AARCH64_R_STR (TLSGD_MOVW_G0_NC
), /* name */
1026 FALSE
, /* partial_inplace */
1027 0xffff, /* src_mask */
1028 0xffff, /* dst_mask */
1029 FALSE
), /* pcrel_offset */
1031 /* Higher 16 bits of GOT offset to tls_index. */
1032 HOWTO64 (AARCH64_R (TLSGD_MOVW_G1
), /* type */
1033 16, /* rightshift */
1034 2, /* size (0 = byte, 1 = short, 2 = long) */
1036 FALSE
, /* pc_relative */
1038 complain_overflow_unsigned
, /* complain_on_overflow */
1039 bfd_elf_generic_reloc
, /* special_function */
1040 AARCH64_R_STR (TLSGD_MOVW_G1
), /* name */
1041 FALSE
, /* partial_inplace */
1042 0xffff, /* src_mask */
1043 0xffff, /* dst_mask */
1044 FALSE
), /* pcrel_offset */
1046 HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21
), /* type */
1047 12, /* rightshift */
1048 2, /* size (0 = byte, 1 = short, 2 = long) */
1050 FALSE
, /* pc_relative */
1052 complain_overflow_dont
, /* complain_on_overflow */
1053 bfd_elf_generic_reloc
, /* special_function */
1054 AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21
), /* name */
1055 FALSE
, /* partial_inplace */
1056 0x1fffff, /* src_mask */
1057 0x1fffff, /* dst_mask */
1058 FALSE
), /* pcrel_offset */
1060 HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC
), /* type */
1062 2, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE
, /* pc_relative */
1066 complain_overflow_dont
, /* complain_on_overflow */
1067 bfd_elf_generic_reloc
, /* special_function */
1068 AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC
), /* name */
1069 FALSE
, /* partial_inplace */
1070 0xff8, /* src_mask */
1071 0xff8, /* dst_mask */
1072 FALSE
), /* pcrel_offset */
1074 HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC
), /* type */
1076 2, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE
, /* pc_relative */
1080 complain_overflow_dont
, /* complain_on_overflow */
1081 bfd_elf_generic_reloc
, /* special_function */
1082 AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC
), /* name */
1083 FALSE
, /* partial_inplace */
1084 0xffc, /* src_mask */
1085 0xffc, /* dst_mask */
1086 FALSE
), /* pcrel_offset */
1088 HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19
), /* type */
1090 2, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE
, /* pc_relative */
1094 complain_overflow_dont
, /* complain_on_overflow */
1095 bfd_elf_generic_reloc
, /* special_function */
1096 AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19
), /* name */
1097 FALSE
, /* partial_inplace */
1098 0x1ffffc, /* src_mask */
1099 0x1ffffc, /* dst_mask */
1100 FALSE
), /* pcrel_offset */
1102 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC
), /* type */
1104 2, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE
, /* pc_relative */
1108 complain_overflow_dont
, /* complain_on_overflow */
1109 bfd_elf_generic_reloc
, /* special_function */
1110 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC
), /* name */
1111 FALSE
, /* partial_inplace */
1112 0xffff, /* src_mask */
1113 0xffff, /* dst_mask */
1114 FALSE
), /* pcrel_offset */
1116 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1
), /* type */
1117 16, /* rightshift */
1118 2, /* size (0 = byte, 1 = short, 2 = long) */
1120 FALSE
, /* pc_relative */
1122 complain_overflow_unsigned
, /* complain_on_overflow */
1123 bfd_elf_generic_reloc
, /* special_function */
1124 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1
), /* name */
1125 FALSE
, /* partial_inplace */
1126 0xffff, /* src_mask */
1127 0xffff, /* dst_mask */
1128 FALSE
), /* pcrel_offset */
1130 /* ADD: bit[23:12] of byte offset to module TLS base address. */
1131 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12
), /* type */
1132 12, /* rightshift */
1133 2, /* size (0 = byte, 1 = short, 2 = long) */
1135 FALSE
, /* pc_relative */
1137 complain_overflow_unsigned
, /* complain_on_overflow */
1138 bfd_elf_generic_reloc
, /* special_function */
1139 AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12
), /* name */
1140 FALSE
, /* partial_inplace */
1141 0xfff, /* src_mask */
1142 0xfff, /* dst_mask */
1143 FALSE
), /* pcrel_offset */
1145 /* Unsigned 12 bit byte offset to module TLS base address. */
1146 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12
), /* type */
1148 2, /* size (0 = byte, 1 = short, 2 = long) */
1150 FALSE
, /* pc_relative */
1152 complain_overflow_unsigned
, /* complain_on_overflow */
1153 bfd_elf_generic_reloc
, /* special_function */
1154 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12
), /* name */
1155 FALSE
, /* partial_inplace */
1156 0xfff, /* src_mask */
1157 0xfff, /* dst_mask */
1158 FALSE
), /* pcrel_offset */
1160 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
1161 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC
), /* type */
1163 2, /* size (0 = byte, 1 = short, 2 = long) */
1165 FALSE
, /* pc_relative */
1167 complain_overflow_dont
, /* complain_on_overflow */
1168 bfd_elf_generic_reloc
, /* special_function */
1169 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC
), /* name */
1170 FALSE
, /* partial_inplace */
1171 0xfff, /* src_mask */
1172 0xfff, /* dst_mask */
1173 FALSE
), /* pcrel_offset */
1175 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1176 HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC
), /* type */
1178 2, /* size (0 = byte, 1 = short, 2 = long) */
1180 FALSE
, /* pc_relative */
1182 complain_overflow_dont
, /* complain_on_overflow */
1183 bfd_elf_generic_reloc
, /* special_function */
1184 AARCH64_R_STR (TLSLD_ADD_LO12_NC
), /* name */
1185 FALSE
, /* partial_inplace */
1186 0xfff, /* src_mask */
1187 0xfff, /* dst_mask */
1188 FALSE
), /* pcrel_offset */
1190 /* Get to the page for the GOT entry for the symbol
1191 (G(S) - P) using an ADRP instruction. */
1192 HOWTO (AARCH64_R (TLSLD_ADR_PAGE21
), /* type */
1193 12, /* rightshift */
1194 2, /* size (0 = byte, 1 = short, 2 = long) */
1196 TRUE
, /* pc_relative */
1198 complain_overflow_signed
, /* complain_on_overflow */
1199 bfd_elf_generic_reloc
, /* special_function */
1200 AARCH64_R_STR (TLSLD_ADR_PAGE21
), /* name */
1201 FALSE
, /* partial_inplace */
1202 0x1fffff, /* src_mask */
1203 0x1fffff, /* dst_mask */
1204 TRUE
), /* pcrel_offset */
1206 HOWTO (AARCH64_R (TLSLD_ADR_PREL21
), /* type */
1208 2, /* size (0 = byte, 1 = short, 2 = long) */
1210 TRUE
, /* pc_relative */
1212 complain_overflow_signed
, /* complain_on_overflow */
1213 bfd_elf_generic_reloc
, /* special_function */
1214 AARCH64_R_STR (TLSLD_ADR_PREL21
), /* name */
1215 FALSE
, /* partial_inplace */
1216 0x1fffff, /* src_mask */
1217 0x1fffff, /* dst_mask */
1218 TRUE
), /* pcrel_offset */
1220 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1221 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12
), /* type */
1223 2, /* size (0 = byte, 1 = short, 2 = long) */
1225 FALSE
, /* pc_relative */
1227 complain_overflow_unsigned
, /* complain_on_overflow */
1228 bfd_elf_generic_reloc
, /* special_function */
1229 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12
), /* name */
1230 FALSE
, /* partial_inplace */
1231 0x1ffc00, /* src_mask */
1232 0x1ffc00, /* dst_mask */
1233 FALSE
), /* pcrel_offset */
1235 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
1236 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC
), /* type */
1238 2, /* size (0 = byte, 1 = short, 2 = long) */
1240 FALSE
, /* pc_relative */
1242 complain_overflow_dont
, /* complain_on_overflow */
1243 bfd_elf_generic_reloc
, /* special_function */
1244 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC
), /* name */
1245 FALSE
, /* partial_inplace */
1246 0x1ffc00, /* src_mask */
1247 0x1ffc00, /* dst_mask */
1248 FALSE
), /* pcrel_offset */
1250 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1251 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12
), /* type */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1255 FALSE
, /* pc_relative */
1257 complain_overflow_unsigned
, /* complain_on_overflow */
1258 bfd_elf_generic_reloc
, /* special_function */
1259 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12
), /* name */
1260 FALSE
, /* partial_inplace */
1261 0x3ffc00, /* src_mask */
1262 0x3ffc00, /* dst_mask */
1263 FALSE
), /* pcrel_offset */
1265 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
1266 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC
), /* type */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE
, /* pc_relative */
1272 complain_overflow_dont
, /* complain_on_overflow */
1273 bfd_elf_generic_reloc
, /* special_function */
1274 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC
), /* name */
1275 FALSE
, /* partial_inplace */
1276 0xffc00, /* src_mask */
1277 0xffc00, /* dst_mask */
1278 FALSE
), /* pcrel_offset */
1280 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1281 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12
), /* type */
1283 2, /* size (0 = byte, 1 = short, 2 = long) */
1285 FALSE
, /* pc_relative */
1287 complain_overflow_unsigned
, /* complain_on_overflow */
1288 bfd_elf_generic_reloc
, /* special_function */
1289 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12
), /* name */
1290 FALSE
, /* partial_inplace */
1291 0x3ffc00, /* src_mask */
1292 0x3ffc00, /* dst_mask */
1293 FALSE
), /* pcrel_offset */
1295 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
1296 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC
), /* type */
1298 2, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE
, /* pc_relative */
1302 complain_overflow_dont
, /* complain_on_overflow */
1303 bfd_elf_generic_reloc
, /* special_function */
1304 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC
), /* name */
1305 FALSE
, /* partial_inplace */
1306 0x7fc00, /* src_mask */
1307 0x7fc00, /* dst_mask */
1308 FALSE
), /* pcrel_offset */
1310 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1311 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12
), /* type */
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE
, /* pc_relative */
1317 complain_overflow_unsigned
, /* complain_on_overflow */
1318 bfd_elf_generic_reloc
, /* special_function */
1319 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12
), /* name */
1320 FALSE
, /* partial_inplace */
1321 0x3ffc00, /* src_mask */
1322 0x3ffc00, /* dst_mask */
1323 FALSE
), /* pcrel_offset */
1325 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
1326 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC
), /* type */
1328 2, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE
, /* pc_relative */
1332 complain_overflow_dont
, /* complain_on_overflow */
1333 bfd_elf_generic_reloc
, /* special_function */
1334 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC
), /* name */
1335 FALSE
, /* partial_inplace */
1336 0x3ffc00, /* src_mask */
1337 0x3ffc00, /* dst_mask */
1338 FALSE
), /* pcrel_offset */
1340 /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
1341 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0
), /* type */
1343 2, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE
, /* pc_relative */
1347 complain_overflow_unsigned
, /* complain_on_overflow */
1348 bfd_elf_generic_reloc
, /* special_function */
1349 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0
), /* name */
1350 FALSE
, /* partial_inplace */
1351 0xffff, /* src_mask */
1352 0xffff, /* dst_mask */
1353 FALSE
), /* pcrel_offset */
1355 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
1356 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC
), /* type */
1358 2, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE
, /* pc_relative */
1362 complain_overflow_dont
, /* complain_on_overflow */
1363 bfd_elf_generic_reloc
, /* special_function */
1364 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC
), /* name */
1365 FALSE
, /* partial_inplace */
1366 0xffff, /* src_mask */
1367 0xffff, /* dst_mask */
1368 FALSE
), /* pcrel_offset */
1370 /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
1371 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1
), /* type */
1372 16, /* rightshift */
1373 2, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE
, /* pc_relative */
1377 complain_overflow_unsigned
, /* complain_on_overflow */
1378 bfd_elf_generic_reloc
, /* special_function */
1379 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1
), /* name */
1380 FALSE
, /* partial_inplace */
1381 0xffff, /* src_mask */
1382 0xffff, /* dst_mask */
1383 FALSE
), /* pcrel_offset */
1385 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
1386 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC
), /* type */
1387 16, /* rightshift */
1388 2, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE
, /* pc_relative */
1392 complain_overflow_dont
, /* complain_on_overflow */
1393 bfd_elf_generic_reloc
, /* special_function */
1394 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC
), /* name */
1395 FALSE
, /* partial_inplace */
1396 0xffff, /* src_mask */
1397 0xffff, /* dst_mask */
1398 FALSE
), /* pcrel_offset */
1400 /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
1401 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2
), /* type */
1402 32, /* rightshift */
1403 2, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE
, /* pc_relative */
1407 complain_overflow_unsigned
, /* complain_on_overflow */
1408 bfd_elf_generic_reloc
, /* special_function */
1409 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2
), /* name */
1410 FALSE
, /* partial_inplace */
1411 0xffff, /* src_mask */
1412 0xffff, /* dst_mask */
1413 FALSE
), /* pcrel_offset */
1415 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2
), /* type */
1416 32, /* rightshift */
1417 2, /* size (0 = byte, 1 = short, 2 = long) */
1419 FALSE
, /* pc_relative */
1421 complain_overflow_unsigned
, /* complain_on_overflow */
1422 bfd_elf_generic_reloc
, /* special_function */
1423 AARCH64_R_STR (TLSLE_MOVW_TPREL_G2
), /* name */
1424 FALSE
, /* partial_inplace */
1425 0xffff, /* src_mask */
1426 0xffff, /* dst_mask */
1427 FALSE
), /* pcrel_offset */
1429 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1
), /* type */
1430 16, /* rightshift */
1431 2, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE
, /* pc_relative */
1435 complain_overflow_dont
, /* complain_on_overflow */
1436 bfd_elf_generic_reloc
, /* special_function */
1437 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1
), /* name */
1438 FALSE
, /* partial_inplace */
1439 0xffff, /* src_mask */
1440 0xffff, /* dst_mask */
1441 FALSE
), /* pcrel_offset */
1443 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC
), /* type */
1444 16, /* rightshift */
1445 2, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE
, /* pc_relative */
1449 complain_overflow_dont
, /* complain_on_overflow */
1450 bfd_elf_generic_reloc
, /* special_function */
1451 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC
), /* name */
1452 FALSE
, /* partial_inplace */
1453 0xffff, /* src_mask */
1454 0xffff, /* dst_mask */
1455 FALSE
), /* pcrel_offset */
1457 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0
), /* type */
1459 2, /* size (0 = byte, 1 = short, 2 = long) */
1461 FALSE
, /* pc_relative */
1463 complain_overflow_dont
, /* complain_on_overflow */
1464 bfd_elf_generic_reloc
, /* special_function */
1465 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0
), /* name */
1466 FALSE
, /* partial_inplace */
1467 0xffff, /* src_mask */
1468 0xffff, /* dst_mask */
1469 FALSE
), /* pcrel_offset */
1471 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
), /* type */
1473 2, /* size (0 = byte, 1 = short, 2 = long) */
1475 FALSE
, /* pc_relative */
1477 complain_overflow_dont
, /* complain_on_overflow */
1478 bfd_elf_generic_reloc
, /* special_function */
1479 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC
), /* name */
1480 FALSE
, /* partial_inplace */
1481 0xffff, /* src_mask */
1482 0xffff, /* dst_mask */
1483 FALSE
), /* pcrel_offset */
1485 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12
), /* type */
1486 12, /* rightshift */
1487 2, /* size (0 = byte, 1 = short, 2 = long) */
1489 FALSE
, /* pc_relative */
1491 complain_overflow_unsigned
, /* complain_on_overflow */
1492 bfd_elf_generic_reloc
, /* special_function */
1493 AARCH64_R_STR (TLSLE_ADD_TPREL_HI12
), /* name */
1494 FALSE
, /* partial_inplace */
1495 0xfff, /* src_mask */
1496 0xfff, /* dst_mask */
1497 FALSE
), /* pcrel_offset */
1499 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12
), /* type */
1501 2, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE
, /* pc_relative */
1505 complain_overflow_unsigned
, /* complain_on_overflow */
1506 bfd_elf_generic_reloc
, /* special_function */
1507 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12
), /* name */
1508 FALSE
, /* partial_inplace */
1509 0xfff, /* src_mask */
1510 0xfff, /* dst_mask */
1511 FALSE
), /* pcrel_offset */
1513 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
), /* type */
1515 2, /* size (0 = byte, 1 = short, 2 = long) */
1517 FALSE
, /* pc_relative */
1519 complain_overflow_dont
, /* complain_on_overflow */
1520 bfd_elf_generic_reloc
, /* special_function */
1521 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC
), /* name */
1522 FALSE
, /* partial_inplace */
1523 0xfff, /* src_mask */
1524 0xfff, /* dst_mask */
1525 FALSE
), /* pcrel_offset */
1527 HOWTO (AARCH64_R (TLSDESC_LD_PREL19
), /* type */
1529 2, /* size (0 = byte, 1 = short, 2 = long) */
1531 TRUE
, /* pc_relative */
1533 complain_overflow_dont
, /* complain_on_overflow */
1534 bfd_elf_generic_reloc
, /* special_function */
1535 AARCH64_R_STR (TLSDESC_LD_PREL19
), /* name */
1536 FALSE
, /* partial_inplace */
1537 0x0ffffe0, /* src_mask */
1538 0x0ffffe0, /* dst_mask */
1539 TRUE
), /* pcrel_offset */
1541 HOWTO (AARCH64_R (TLSDESC_ADR_PREL21
), /* type */
1543 2, /* size (0 = byte, 1 = short, 2 = long) */
1545 TRUE
, /* pc_relative */
1547 complain_overflow_dont
, /* complain_on_overflow */
1548 bfd_elf_generic_reloc
, /* special_function */
1549 AARCH64_R_STR (TLSDESC_ADR_PREL21
), /* name */
1550 FALSE
, /* partial_inplace */
1551 0x1fffff, /* src_mask */
1552 0x1fffff, /* dst_mask */
1553 TRUE
), /* pcrel_offset */
1555 /* Get to the page for the GOT entry for the symbol
1556 (G(S) - P) using an ADRP instruction. */
1557 HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21
), /* type */
1558 12, /* rightshift */
1559 2, /* size (0 = byte, 1 = short, 2 = long) */
1561 TRUE
, /* pc_relative */
1563 complain_overflow_dont
, /* complain_on_overflow */
1564 bfd_elf_generic_reloc
, /* special_function */
1565 AARCH64_R_STR (TLSDESC_ADR_PAGE21
), /* name */
1566 FALSE
, /* partial_inplace */
1567 0x1fffff, /* src_mask */
1568 0x1fffff, /* dst_mask */
1569 TRUE
), /* pcrel_offset */
1571 /* LD64: GOT offset G(S) & 0xff8. */
1572 HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC
), /* type */
1574 2, /* size (0 = byte, 1 = short, 2 = long) */
1576 FALSE
, /* pc_relative */
1578 complain_overflow_dont
, /* complain_on_overflow */
1579 bfd_elf_generic_reloc
, /* special_function */
1580 AARCH64_R_STR (TLSDESC_LD64_LO12_NC
), /* name */
1581 FALSE
, /* partial_inplace */
1582 0xff8, /* src_mask */
1583 0xff8, /* dst_mask */
1584 FALSE
), /* pcrel_offset */
1586 /* LD32: GOT offset G(S) & 0xffc. */
1587 HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC
), /* type */
1589 2, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE
, /* pc_relative */
1593 complain_overflow_dont
, /* complain_on_overflow */
1594 bfd_elf_generic_reloc
, /* special_function */
1595 AARCH64_R_STR (TLSDESC_LD32_LO12_NC
), /* name */
1596 FALSE
, /* partial_inplace */
1597 0xffc, /* src_mask */
1598 0xffc, /* dst_mask */
1599 FALSE
), /* pcrel_offset */
1601 /* ADD: GOT offset G(S) & 0xfff. */
1602 HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC
), /* type */
1604 2, /* size (0 = byte, 1 = short, 2 = long) */
1606 FALSE
, /* pc_relative */
1608 complain_overflow_dont
, /* complain_on_overflow */
1609 bfd_elf_generic_reloc
, /* special_function */
1610 AARCH64_R_STR (TLSDESC_ADD_LO12_NC
), /* name */
1611 FALSE
, /* partial_inplace */
1612 0xfff, /* src_mask */
1613 0xfff, /* dst_mask */
1614 FALSE
), /* pcrel_offset */
1616 HOWTO64 (AARCH64_R (TLSDESC_OFF_G1
), /* type */
1617 16, /* rightshift */
1618 2, /* size (0 = byte, 1 = short, 2 = long) */
1620 FALSE
, /* pc_relative */
1622 complain_overflow_unsigned
, /* complain_on_overflow */
1623 bfd_elf_generic_reloc
, /* special_function */
1624 AARCH64_R_STR (TLSDESC_OFF_G1
), /* name */
1625 FALSE
, /* partial_inplace */
1626 0xffff, /* src_mask */
1627 0xffff, /* dst_mask */
1628 FALSE
), /* pcrel_offset */
1630 HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC
), /* type */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 FALSE
, /* pc_relative */
1636 complain_overflow_dont
, /* complain_on_overflow */
1637 bfd_elf_generic_reloc
, /* special_function */
1638 AARCH64_R_STR (TLSDESC_OFF_G0_NC
), /* name */
1639 FALSE
, /* partial_inplace */
1640 0xffff, /* src_mask */
1641 0xffff, /* dst_mask */
1642 FALSE
), /* pcrel_offset */
1644 HOWTO64 (AARCH64_R (TLSDESC_LDR
), /* type */
1646 2, /* size (0 = byte, 1 = short, 2 = long) */
1648 FALSE
, /* pc_relative */
1650 complain_overflow_dont
, /* complain_on_overflow */
1651 bfd_elf_generic_reloc
, /* special_function */
1652 AARCH64_R_STR (TLSDESC_LDR
), /* name */
1653 FALSE
, /* partial_inplace */
1656 FALSE
), /* pcrel_offset */
1658 HOWTO64 (AARCH64_R (TLSDESC_ADD
), /* type */
1660 2, /* size (0 = byte, 1 = short, 2 = long) */
1662 FALSE
, /* pc_relative */
1664 complain_overflow_dont
, /* complain_on_overflow */
1665 bfd_elf_generic_reloc
, /* special_function */
1666 AARCH64_R_STR (TLSDESC_ADD
), /* name */
1667 FALSE
, /* partial_inplace */
1670 FALSE
), /* pcrel_offset */
1672 HOWTO (AARCH64_R (TLSDESC_CALL
), /* type */
1674 2, /* size (0 = byte, 1 = short, 2 = long) */
1676 FALSE
, /* pc_relative */
1678 complain_overflow_dont
, /* complain_on_overflow */
1679 bfd_elf_generic_reloc
, /* special_function */
1680 AARCH64_R_STR (TLSDESC_CALL
), /* name */
1681 FALSE
, /* partial_inplace */
1684 FALSE
), /* pcrel_offset */
1686 HOWTO (AARCH64_R (COPY
), /* type */
1688 2, /* size (0 = byte, 1 = short, 2 = long) */
1690 FALSE
, /* pc_relative */
1692 complain_overflow_bitfield
, /* complain_on_overflow */
1693 bfd_elf_generic_reloc
, /* special_function */
1694 AARCH64_R_STR (COPY
), /* name */
1695 TRUE
, /* partial_inplace */
1696 0xffffffff, /* src_mask */
1697 0xffffffff, /* dst_mask */
1698 FALSE
), /* pcrel_offset */
1700 HOWTO (AARCH64_R (GLOB_DAT
), /* type */
1702 2, /* size (0 = byte, 1 = short, 2 = long) */
1704 FALSE
, /* pc_relative */
1706 complain_overflow_bitfield
, /* complain_on_overflow */
1707 bfd_elf_generic_reloc
, /* special_function */
1708 AARCH64_R_STR (GLOB_DAT
), /* name */
1709 TRUE
, /* partial_inplace */
1710 0xffffffff, /* src_mask */
1711 0xffffffff, /* dst_mask */
1712 FALSE
), /* pcrel_offset */
1714 HOWTO (AARCH64_R (JUMP_SLOT
), /* type */
1716 2, /* size (0 = byte, 1 = short, 2 = long) */
1718 FALSE
, /* pc_relative */
1720 complain_overflow_bitfield
, /* complain_on_overflow */
1721 bfd_elf_generic_reloc
, /* special_function */
1722 AARCH64_R_STR (JUMP_SLOT
), /* name */
1723 TRUE
, /* partial_inplace */
1724 0xffffffff, /* src_mask */
1725 0xffffffff, /* dst_mask */
1726 FALSE
), /* pcrel_offset */
1728 HOWTO (AARCH64_R (RELATIVE
), /* type */
1730 2, /* size (0 = byte, 1 = short, 2 = long) */
1732 FALSE
, /* pc_relative */
1734 complain_overflow_bitfield
, /* complain_on_overflow */
1735 bfd_elf_generic_reloc
, /* special_function */
1736 AARCH64_R_STR (RELATIVE
), /* name */
1737 TRUE
, /* partial_inplace */
1738 ALL_ONES
, /* src_mask */
1739 ALL_ONES
, /* dst_mask */
1740 FALSE
), /* pcrel_offset */
1742 HOWTO (AARCH64_R (TLS_DTPMOD
), /* type */
1744 2, /* size (0 = byte, 1 = short, 2 = long) */
1746 FALSE
, /* pc_relative */
1748 complain_overflow_dont
, /* complain_on_overflow */
1749 bfd_elf_generic_reloc
, /* special_function */
1751 AARCH64_R_STR (TLS_DTPMOD64
), /* name */
1753 AARCH64_R_STR (TLS_DTPMOD
), /* name */
1755 FALSE
, /* partial_inplace */
1757 ALL_ONES
, /* dst_mask */
1758 FALSE
), /* pc_reloffset */
1760 HOWTO (AARCH64_R (TLS_DTPREL
), /* type */
1762 2, /* size (0 = byte, 1 = short, 2 = long) */
1764 FALSE
, /* pc_relative */
1766 complain_overflow_dont
, /* complain_on_overflow */
1767 bfd_elf_generic_reloc
, /* special_function */
1769 AARCH64_R_STR (TLS_DTPREL64
), /* name */
1771 AARCH64_R_STR (TLS_DTPREL
), /* name */
1773 FALSE
, /* partial_inplace */
1775 ALL_ONES
, /* dst_mask */
1776 FALSE
), /* pcrel_offset */
1778 HOWTO (AARCH64_R (TLS_TPREL
), /* type */
1780 2, /* size (0 = byte, 1 = short, 2 = long) */
1782 FALSE
, /* pc_relative */
1784 complain_overflow_dont
, /* complain_on_overflow */
1785 bfd_elf_generic_reloc
, /* special_function */
1787 AARCH64_R_STR (TLS_TPREL64
), /* name */
1789 AARCH64_R_STR (TLS_TPREL
), /* name */
1791 FALSE
, /* partial_inplace */
1793 ALL_ONES
, /* dst_mask */
1794 FALSE
), /* pcrel_offset */
1796 HOWTO (AARCH64_R (TLSDESC
), /* type */
1798 2, /* size (0 = byte, 1 = short, 2 = long) */
1800 FALSE
, /* pc_relative */
1802 complain_overflow_dont
, /* complain_on_overflow */
1803 bfd_elf_generic_reloc
, /* special_function */
1804 AARCH64_R_STR (TLSDESC
), /* name */
1805 FALSE
, /* partial_inplace */
1807 ALL_ONES
, /* dst_mask */
1808 FALSE
), /* pcrel_offset */
1810 HOWTO (AARCH64_R (IRELATIVE
), /* type */
1812 2, /* size (0 = byte, 1 = short, 2 = long) */
1814 FALSE
, /* pc_relative */
1816 complain_overflow_bitfield
, /* complain_on_overflow */
1817 bfd_elf_generic_reloc
, /* special_function */
1818 AARCH64_R_STR (IRELATIVE
), /* name */
1819 FALSE
, /* partial_inplace */
1821 ALL_ONES
, /* dst_mask */
1822 FALSE
), /* pcrel_offset */
1827 static reloc_howto_type elfNN_aarch64_howto_none
=
1828 HOWTO (R_AARCH64_NONE
, /* type */
1830 3, /* size (0 = byte, 1 = short, 2 = long) */
1832 FALSE
, /* pc_relative */
1834 complain_overflow_dont
,/* complain_on_overflow */
1835 bfd_elf_generic_reloc
, /* special_function */
1836 "R_AARCH64_NONE", /* name */
1837 FALSE
, /* partial_inplace */
1840 FALSE
); /* pcrel_offset */
1842 /* Given HOWTO, return the bfd internal relocation enumerator. */
1844 static bfd_reloc_code_real_type
1845 elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type
*howto
)
1848 = (int) ARRAY_SIZE (elfNN_aarch64_howto_table
);
1849 const ptrdiff_t offset
1850 = howto
- elfNN_aarch64_howto_table
;
1852 if (offset
> 0 && offset
< size
- 1)
1853 return BFD_RELOC_AARCH64_RELOC_START
+ offset
;
1855 if (howto
== &elfNN_aarch64_howto_none
)
1856 return BFD_RELOC_AARCH64_NONE
;
1858 return BFD_RELOC_AARCH64_RELOC_START
;
1861 /* Given R_TYPE, return the bfd internal relocation enumerator. */
1863 static bfd_reloc_code_real_type
1864 elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type
)
1866 static bfd_boolean initialized_p
= FALSE
;
1867 /* Indexed by R_TYPE, values are offsets in the howto_table. */
1868 static unsigned int offsets
[R_AARCH64_end
];
1870 if (initialized_p
== FALSE
)
1874 for (i
= 1; i
< ARRAY_SIZE (elfNN_aarch64_howto_table
) - 1; ++i
)
1875 if (elfNN_aarch64_howto_table
[i
].type
!= 0)
1876 offsets
[elfNN_aarch64_howto_table
[i
].type
] = i
;
1878 initialized_p
= TRUE
;
1881 if (r_type
== R_AARCH64_NONE
|| r_type
== R_AARCH64_NULL
)
1882 return BFD_RELOC_AARCH64_NONE
;
1884 /* PR 17512: file: b371e70a. */
1885 if (r_type
>= R_AARCH64_end
)
1887 _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type
);
1888 bfd_set_error (bfd_error_bad_value
);
1889 return BFD_RELOC_AARCH64_NONE
;
1892 return BFD_RELOC_AARCH64_RELOC_START
+ offsets
[r_type
];
1895 struct elf_aarch64_reloc_map
1897 bfd_reloc_code_real_type from
;
1898 bfd_reloc_code_real_type to
;
1901 /* Map bfd generic reloc to AArch64-specific reloc. */
1902 static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map
[] =
1904 {BFD_RELOC_NONE
, BFD_RELOC_AARCH64_NONE
},
1906 /* Basic data relocations. */
1907 {BFD_RELOC_CTOR
, BFD_RELOC_AARCH64_NN
},
1908 {BFD_RELOC_64
, BFD_RELOC_AARCH64_64
},
1909 {BFD_RELOC_32
, BFD_RELOC_AARCH64_32
},
1910 {BFD_RELOC_16
, BFD_RELOC_AARCH64_16
},
1911 {BFD_RELOC_64_PCREL
, BFD_RELOC_AARCH64_64_PCREL
},
1912 {BFD_RELOC_32_PCREL
, BFD_RELOC_AARCH64_32_PCREL
},
1913 {BFD_RELOC_16_PCREL
, BFD_RELOC_AARCH64_16_PCREL
},
1916 /* Given the bfd internal relocation enumerator in CODE, return the
1917 corresponding howto entry. */
1919 static reloc_howto_type
*
1920 elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code
)
1924 /* Convert bfd generic reloc to AArch64-specific reloc. */
1925 if (code
< BFD_RELOC_AARCH64_RELOC_START
1926 || code
> BFD_RELOC_AARCH64_RELOC_END
)
1927 for (i
= 0; i
< ARRAY_SIZE (elf_aarch64_reloc_map
); i
++)
1928 if (elf_aarch64_reloc_map
[i
].from
== code
)
1930 code
= elf_aarch64_reloc_map
[i
].to
;
1934 if (code
> BFD_RELOC_AARCH64_RELOC_START
1935 && code
< BFD_RELOC_AARCH64_RELOC_END
)
1936 if (elfNN_aarch64_howto_table
[code
- BFD_RELOC_AARCH64_RELOC_START
].type
)
1937 return &elfNN_aarch64_howto_table
[code
- BFD_RELOC_AARCH64_RELOC_START
];
1939 if (code
== BFD_RELOC_AARCH64_NONE
)
1940 return &elfNN_aarch64_howto_none
;
1945 static reloc_howto_type
*
1946 elfNN_aarch64_howto_from_type (unsigned int r_type
)
1948 bfd_reloc_code_real_type val
;
1949 reloc_howto_type
*howto
;
1954 bfd_set_error (bfd_error_bad_value
);
1959 if (r_type
== R_AARCH64_NONE
)
1960 return &elfNN_aarch64_howto_none
;
1962 val
= elfNN_aarch64_bfd_reloc_from_type (r_type
);
1963 howto
= elfNN_aarch64_howto_from_bfd_reloc (val
);
1968 bfd_set_error (bfd_error_bad_value
);
1973 elfNN_aarch64_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1974 Elf_Internal_Rela
*elf_reloc
)
1976 unsigned int r_type
;
1978 r_type
= ELFNN_R_TYPE (elf_reloc
->r_info
);
1979 bfd_reloc
->howto
= elfNN_aarch64_howto_from_type (r_type
);
1982 static reloc_howto_type
*
1983 elfNN_aarch64_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1984 bfd_reloc_code_real_type code
)
1986 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (code
);
1991 bfd_set_error (bfd_error_bad_value
);
1995 static reloc_howto_type
*
1996 elfNN_aarch64_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2001 for (i
= 1; i
< ARRAY_SIZE (elfNN_aarch64_howto_table
) - 1; ++i
)
2002 if (elfNN_aarch64_howto_table
[i
].name
!= NULL
2003 && strcasecmp (elfNN_aarch64_howto_table
[i
].name
, r_name
) == 0)
2004 return &elfNN_aarch64_howto_table
[i
];
2009 #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
2010 #define TARGET_LITTLE_NAME "elfNN-littleaarch64"
2011 #define TARGET_BIG_SYM aarch64_elfNN_be_vec
2012 #define TARGET_BIG_NAME "elfNN-bigaarch64"
2014 /* The linker script knows the section names for placement.
2015 The entry_names are used to do simple name mangling on the stubs.
2016 Given a function name, and its type, the stub can be found. The
2017 name can be changed. The only requirement is the %s be present. */
2018 #define STUB_ENTRY_NAME "__%s_veneer"
2020 /* The name of the dynamic interpreter. This is put in the .interp
2022 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2024 #define AARCH64_MAX_FWD_BRANCH_OFFSET \
2025 (((1 << 25) - 1) << 2)
2026 #define AARCH64_MAX_BWD_BRANCH_OFFSET \
2029 #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
2030 #define AARCH64_MIN_ADRP_IMM (-(1 << 20))
2033 aarch64_valid_for_adrp_p (bfd_vma value
, bfd_vma place
)
2035 bfd_signed_vma offset
= (bfd_signed_vma
) (PG (value
) - PG (place
)) >> 12;
2036 return offset
<= AARCH64_MAX_ADRP_IMM
&& offset
>= AARCH64_MIN_ADRP_IMM
;
2040 aarch64_valid_branch_p (bfd_vma value
, bfd_vma place
)
2042 bfd_signed_vma offset
= (bfd_signed_vma
) (value
- place
);
2043 return (offset
<= AARCH64_MAX_FWD_BRANCH_OFFSET
2044 && offset
>= AARCH64_MAX_BWD_BRANCH_OFFSET
);
2047 static const uint32_t aarch64_adrp_branch_stub
[] =
2049 0x90000010, /* adrp ip0, X */
2050 /* R_AARCH64_ADR_HI21_PCREL(X) */
2051 0x91000210, /* add ip0, ip0, :lo12:X */
2052 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2053 0xd61f0200, /* br ip0 */
2056 static const uint32_t aarch64_long_branch_stub
[] =
2059 0x58000090, /* ldr ip0, 1f */
2061 0x18000090, /* ldr wip0, 1f */
2063 0x10000011, /* adr ip1, #0 */
2064 0x8b110210, /* add ip0, ip0, ip1 */
2065 0xd61f0200, /* br ip0 */
2066 0x00000000, /* 1: .xword or .word
2067 R_AARCH64_PRELNN(X) + 12
2072 static const uint32_t aarch64_erratum_835769_stub
[] =
2074 0x00000000, /* Placeholder for multiply accumulate. */
2075 0x14000000, /* b <label> */
2078 static const uint32_t aarch64_erratum_843419_stub
[] =
2080 0x00000000, /* Placeholder for LDR instruction. */
2081 0x14000000, /* b <label> */
2084 /* Section name for stubs is the associated section name plus this
2086 #define STUB_SUFFIX ".stub"
2088 enum elf_aarch64_stub_type
2091 aarch64_stub_adrp_branch
,
2092 aarch64_stub_long_branch
,
2093 aarch64_stub_erratum_835769_veneer
,
2094 aarch64_stub_erratum_843419_veneer
,
2097 struct elf_aarch64_stub_hash_entry
2099 /* Base hash table entry structure. */
2100 struct bfd_hash_entry root
;
2102 /* The stub section. */
2105 /* Offset within stub_sec of the beginning of this stub. */
2106 bfd_vma stub_offset
;
2108 /* Given the symbol's value and its section we can determine its final
2109 value when building the stubs (so the stub knows where to jump). */
2110 bfd_vma target_value
;
2111 asection
*target_section
;
2113 enum elf_aarch64_stub_type stub_type
;
2115 /* The symbol table entry, if any, that this was derived from. */
2116 struct elf_aarch64_link_hash_entry
*h
;
2118 /* Destination symbol type */
2119 unsigned char st_type
;
2121 /* Where this stub is being called from, or, in the case of combined
2122 stub sections, the first input section in the group. */
2125 /* The name for the local symbol at the start of this stub. The
2126 stub name in the hash table has to be unique; this does not, so
2127 it can be friendlier. */
2130 /* The instruction which caused this stub to be generated (only valid for
2131 erratum 835769 workaround stubs at present). */
2132 uint32_t veneered_insn
;
2134 /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
2135 bfd_vma adrp_offset
;
2138 /* Used to build a map of a section. This is required for mixed-endian
2141 typedef struct elf_elf_section_map
2146 elf_aarch64_section_map
;
2149 typedef struct _aarch64_elf_section_data
2151 struct bfd_elf_section_data elf
;
2152 unsigned int mapcount
;
2153 unsigned int mapsize
;
2154 elf_aarch64_section_map
*map
;
2156 _aarch64_elf_section_data
;
2158 #define elf_aarch64_section_data(sec) \
2159 ((_aarch64_elf_section_data *) elf_section_data (sec))
2161 /* The size of the thread control block which is defined to be two pointers. */
2162 #define TCB_SIZE (ARCH_SIZE/8)*2
2164 struct elf_aarch64_local_symbol
2166 unsigned int got_type
;
2167 bfd_signed_vma got_refcount
;
2170 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
2171 offset is from the end of the jump table and reserved entries
2174 The magic value (bfd_vma) -1 indicates that an offset has not be
2176 bfd_vma tlsdesc_got_jump_table_offset
;
2179 struct elf_aarch64_obj_tdata
2181 struct elf_obj_tdata root
;
2183 /* local symbol descriptors */
2184 struct elf_aarch64_local_symbol
*locals
;
2186 /* Zero to warn when linking objects with incompatible enum sizes. */
2187 int no_enum_size_warning
;
2189 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2190 int no_wchar_size_warning
;
2193 #define elf_aarch64_tdata(bfd) \
2194 ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
2196 #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
2198 #define is_aarch64_elf(bfd) \
2199 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2200 && elf_tdata (bfd) != NULL \
2201 && elf_object_id (bfd) == AARCH64_ELF_DATA)
2204 elfNN_aarch64_mkobject (bfd
*abfd
)
2206 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_aarch64_obj_tdata
),
2210 #define elf_aarch64_hash_entry(ent) \
2211 ((struct elf_aarch64_link_hash_entry *)(ent))
2213 #define GOT_UNKNOWN 0
2214 #define GOT_NORMAL 1
2215 #define GOT_TLS_GD 2
2216 #define GOT_TLS_IE 4
2217 #define GOT_TLSDESC_GD 8
2219 #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
2221 /* AArch64 ELF linker hash entry. */
2222 struct elf_aarch64_link_hash_entry
2224 struct elf_link_hash_entry root
;
2226 /* Track dynamic relocs copied for this symbol. */
2227 struct elf_dyn_relocs
*dyn_relocs
;
2229 /* Since PLT entries have variable size, we need to record the
2230 index into .got.plt instead of recomputing it from the PLT
2232 bfd_signed_vma plt_got_offset
;
2234 /* Bit mask representing the type of GOT entry(s) if any required by
2236 unsigned int got_type
;
2238 /* A pointer to the most recently used stub hash entry against this
2240 struct elf_aarch64_stub_hash_entry
*stub_cache
;
2242 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2243 is from the end of the jump table and reserved entries within the PLTGOT.
2245 The magic value (bfd_vma) -1 indicates that an offset has not
2247 bfd_vma tlsdesc_got_jump_table_offset
;
2251 elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry
*h
,
2253 unsigned long r_symndx
)
2256 return elf_aarch64_hash_entry (h
)->got_type
;
2258 if (! elf_aarch64_locals (abfd
))
2261 return elf_aarch64_locals (abfd
)[r_symndx
].got_type
;
2264 /* Get the AArch64 elf linker hash table from a link_info structure. */
2265 #define elf_aarch64_hash_table(info) \
2266 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
2268 #define aarch64_stub_hash_lookup(table, string, create, copy) \
2269 ((struct elf_aarch64_stub_hash_entry *) \
2270 bfd_hash_lookup ((table), (string), (create), (copy)))
2272 /* AArch64 ELF linker hash table. */
2273 struct elf_aarch64_link_hash_table
2275 /* The main hash table. */
2276 struct elf_link_hash_table root
;
2278 /* Nonzero to force PIC branch veneers. */
2281 /* Fix erratum 835769. */
2282 int fix_erratum_835769
;
2284 /* Fix erratum 843419. */
2285 int fix_erratum_843419
;
2287 /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */
2288 int fix_erratum_843419_adr
;
2290 /* Don't apply link-time values for dynamic relocations. */
2291 int no_apply_dynamic_relocs
;
2293 /* The number of bytes in the initial entry in the PLT. */
2294 bfd_size_type plt_header_size
;
2296 /* The number of bytes in the subsequent PLT etries. */
2297 bfd_size_type plt_entry_size
;
2299 /* Short-cuts to get to dynamic linker sections. */
2303 /* Small local sym cache. */
2304 struct sym_cache sym_cache
;
2306 /* For convenience in allocate_dynrelocs. */
2309 /* The amount of space used by the reserved portion of the sgotplt
2310 section, plus whatever space is used by the jump slots. */
2311 bfd_vma sgotplt_jump_table_size
;
2313 /* The stub hash table. */
2314 struct bfd_hash_table stub_hash_table
;
2316 /* Linker stub bfd. */
2319 /* Linker call-backs. */
2320 asection
*(*add_stub_section
) (const char *, asection
*);
2321 void (*layout_sections_again
) (void);
2323 /* Array to keep track of which stub sections have been created, and
2324 information on stub grouping. */
2327 /* This is the section to which stubs in the group will be
2330 /* The stub section. */
2334 /* Assorted information used by elfNN_aarch64_size_stubs. */
2335 unsigned int bfd_count
;
2336 unsigned int top_index
;
2337 asection
**input_list
;
2339 /* The offset into splt of the PLT entry for the TLS descriptor
2340 resolver. Special values are 0, if not necessary (or not found
2341 to be necessary yet), and -1 if needed but not determined
2343 bfd_vma tlsdesc_plt
;
2345 /* The GOT offset for the lazy trampoline. Communicated to the
2346 loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
2347 indicates an offset is not allocated. */
2348 bfd_vma dt_tlsdesc_got
;
2350 /* Used by local STT_GNU_IFUNC symbols. */
2351 htab_t loc_hash_table
;
2352 void * loc_hash_memory
;
2355 /* Create an entry in an AArch64 ELF linker hash table. */
2357 static struct bfd_hash_entry
*
2358 elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2359 struct bfd_hash_table
*table
,
2362 struct elf_aarch64_link_hash_entry
*ret
=
2363 (struct elf_aarch64_link_hash_entry
*) entry
;
2365 /* Allocate the structure if it has not already been allocated by a
2368 ret
= bfd_hash_allocate (table
,
2369 sizeof (struct elf_aarch64_link_hash_entry
));
2371 return (struct bfd_hash_entry
*) ret
;
2373 /* Call the allocation method of the superclass. */
2374 ret
= ((struct elf_aarch64_link_hash_entry
*)
2375 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2379 ret
->dyn_relocs
= NULL
;
2380 ret
->got_type
= GOT_UNKNOWN
;
2381 ret
->plt_got_offset
= (bfd_vma
) - 1;
2382 ret
->stub_cache
= NULL
;
2383 ret
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
2386 return (struct bfd_hash_entry
*) ret
;
2389 /* Initialize an entry in the stub hash table. */
2391 static struct bfd_hash_entry
*
2392 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2393 struct bfd_hash_table
*table
, const char *string
)
2395 /* Allocate the structure if it has not already been allocated by a
2399 entry
= bfd_hash_allocate (table
,
2401 elf_aarch64_stub_hash_entry
));
2406 /* Call the allocation method of the superclass. */
2407 entry
= bfd_hash_newfunc (entry
, table
, string
);
2410 struct elf_aarch64_stub_hash_entry
*eh
;
2412 /* Initialize the local fields. */
2413 eh
= (struct elf_aarch64_stub_hash_entry
*) entry
;
2414 eh
->adrp_offset
= 0;
2415 eh
->stub_sec
= NULL
;
2416 eh
->stub_offset
= 0;
2417 eh
->target_value
= 0;
2418 eh
->target_section
= NULL
;
2419 eh
->stub_type
= aarch64_stub_none
;
2427 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
2428 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2429 as global symbol. We reuse indx and dynstr_index for local symbol
2430 hash since they aren't used by global symbols in this backend. */
2433 elfNN_aarch64_local_htab_hash (const void *ptr
)
2435 struct elf_link_hash_entry
*h
2436 = (struct elf_link_hash_entry
*) ptr
;
2437 return ELF_LOCAL_SYMBOL_HASH (h
->indx
, h
->dynstr_index
);
2440 /* Compare local hash entries. */
2443 elfNN_aarch64_local_htab_eq (const void *ptr1
, const void *ptr2
)
2445 struct elf_link_hash_entry
*h1
2446 = (struct elf_link_hash_entry
*) ptr1
;
2447 struct elf_link_hash_entry
*h2
2448 = (struct elf_link_hash_entry
*) ptr2
;
2450 return h1
->indx
== h2
->indx
&& h1
->dynstr_index
== h2
->dynstr_index
;
2453 /* Find and/or create a hash entry for local symbol. */
2455 static struct elf_link_hash_entry
*
2456 elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table
*htab
,
2457 bfd
*abfd
, const Elf_Internal_Rela
*rel
,
2460 struct elf_aarch64_link_hash_entry e
, *ret
;
2461 asection
*sec
= abfd
->sections
;
2462 hashval_t h
= ELF_LOCAL_SYMBOL_HASH (sec
->id
,
2463 ELFNN_R_SYM (rel
->r_info
));
2466 e
.root
.indx
= sec
->id
;
2467 e
.root
.dynstr_index
= ELFNN_R_SYM (rel
->r_info
);
2468 slot
= htab_find_slot_with_hash (htab
->loc_hash_table
, &e
, h
,
2469 create
? INSERT
: NO_INSERT
);
2476 ret
= (struct elf_aarch64_link_hash_entry
*) *slot
;
2480 ret
= (struct elf_aarch64_link_hash_entry
*)
2481 objalloc_alloc ((struct objalloc
*) htab
->loc_hash_memory
,
2482 sizeof (struct elf_aarch64_link_hash_entry
));
2485 memset (ret
, 0, sizeof (*ret
));
2486 ret
->root
.indx
= sec
->id
;
2487 ret
->root
.dynstr_index
= ELFNN_R_SYM (rel
->r_info
);
2488 ret
->root
.dynindx
= -1;
2494 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2497 elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info
*info
,
2498 struct elf_link_hash_entry
*dir
,
2499 struct elf_link_hash_entry
*ind
)
2501 struct elf_aarch64_link_hash_entry
*edir
, *eind
;
2503 edir
= (struct elf_aarch64_link_hash_entry
*) dir
;
2504 eind
= (struct elf_aarch64_link_hash_entry
*) ind
;
2506 if (eind
->dyn_relocs
!= NULL
)
2508 if (edir
->dyn_relocs
!= NULL
)
2510 struct elf_dyn_relocs
**pp
;
2511 struct elf_dyn_relocs
*p
;
2513 /* Add reloc counts against the indirect sym to the direct sym
2514 list. Merge any entries against the same section. */
2515 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
2517 struct elf_dyn_relocs
*q
;
2519 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2520 if (q
->sec
== p
->sec
)
2522 q
->pc_count
+= p
->pc_count
;
2523 q
->count
+= p
->count
;
2530 *pp
= edir
->dyn_relocs
;
2533 edir
->dyn_relocs
= eind
->dyn_relocs
;
2534 eind
->dyn_relocs
= NULL
;
2537 if (ind
->root
.type
== bfd_link_hash_indirect
)
2539 /* Copy over PLT info. */
2540 if (dir
->got
.refcount
<= 0)
2542 edir
->got_type
= eind
->got_type
;
2543 eind
->got_type
= GOT_UNKNOWN
;
2547 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2550 /* Destroy an AArch64 elf linker hash table. */
2553 elfNN_aarch64_link_hash_table_free (bfd
*obfd
)
2555 struct elf_aarch64_link_hash_table
*ret
2556 = (struct elf_aarch64_link_hash_table
*) obfd
->link
.hash
;
2558 if (ret
->loc_hash_table
)
2559 htab_delete (ret
->loc_hash_table
);
2560 if (ret
->loc_hash_memory
)
2561 objalloc_free ((struct objalloc
*) ret
->loc_hash_memory
);
2563 bfd_hash_table_free (&ret
->stub_hash_table
);
2564 _bfd_elf_link_hash_table_free (obfd
);
2567 /* Create an AArch64 elf linker hash table. */
2569 static struct bfd_link_hash_table
*
2570 elfNN_aarch64_link_hash_table_create (bfd
*abfd
)
2572 struct elf_aarch64_link_hash_table
*ret
;
2573 bfd_size_type amt
= sizeof (struct elf_aarch64_link_hash_table
);
2575 ret
= bfd_zmalloc (amt
);
2579 if (!_bfd_elf_link_hash_table_init
2580 (&ret
->root
, abfd
, elfNN_aarch64_link_hash_newfunc
,
2581 sizeof (struct elf_aarch64_link_hash_entry
), AARCH64_ELF_DATA
))
2587 ret
->plt_header_size
= PLT_ENTRY_SIZE
;
2588 ret
->plt_entry_size
= PLT_SMALL_ENTRY_SIZE
;
2590 ret
->dt_tlsdesc_got
= (bfd_vma
) - 1;
2592 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
,
2593 sizeof (struct elf_aarch64_stub_hash_entry
)))
2595 _bfd_elf_link_hash_table_free (abfd
);
2599 ret
->loc_hash_table
= htab_try_create (1024,
2600 elfNN_aarch64_local_htab_hash
,
2601 elfNN_aarch64_local_htab_eq
,
2603 ret
->loc_hash_memory
= objalloc_create ();
2604 if (!ret
->loc_hash_table
|| !ret
->loc_hash_memory
)
2606 elfNN_aarch64_link_hash_table_free (abfd
);
2609 ret
->root
.root
.hash_table_free
= elfNN_aarch64_link_hash_table_free
;
2611 return &ret
->root
.root
;
2615 aarch64_relocate (unsigned int r_type
, bfd
*input_bfd
, asection
*input_section
,
2616 bfd_vma offset
, bfd_vma value
)
2618 reloc_howto_type
*howto
;
2621 howto
= elfNN_aarch64_howto_from_type (r_type
);
2622 place
= (input_section
->output_section
->vma
+ input_section
->output_offset
2625 r_type
= elfNN_aarch64_bfd_reloc_from_type (r_type
);
2626 value
= _bfd_aarch64_elf_resolve_relocation (r_type
, place
, value
, 0, FALSE
);
2627 return _bfd_aarch64_elf_put_addend (input_bfd
,
2628 input_section
->contents
+ offset
, r_type
,
2632 static enum elf_aarch64_stub_type
2633 aarch64_select_branch_stub (bfd_vma value
, bfd_vma place
)
2635 if (aarch64_valid_for_adrp_p (value
, place
))
2636 return aarch64_stub_adrp_branch
;
2637 return aarch64_stub_long_branch
;
2640 /* Determine the type of stub needed, if any, for a call. */
2642 static enum elf_aarch64_stub_type
2643 aarch64_type_of_stub (asection
*input_sec
,
2644 const Elf_Internal_Rela
*rel
,
2646 unsigned char st_type
,
2647 bfd_vma destination
)
2650 bfd_signed_vma branch_offset
;
2651 unsigned int r_type
;
2652 enum elf_aarch64_stub_type stub_type
= aarch64_stub_none
;
2654 if (st_type
!= STT_FUNC
2655 && (sym_sec
== input_sec
))
2658 /* Determine where the call point is. */
2659 location
= (input_sec
->output_offset
2660 + input_sec
->output_section
->vma
+ rel
->r_offset
);
2662 branch_offset
= (bfd_signed_vma
) (destination
- location
);
2664 r_type
= ELFNN_R_TYPE (rel
->r_info
);
2666 /* We don't want to redirect any old unconditional jump in this way,
2667 only one which is being used for a sibcall, where it is
2668 acceptable for the IP0 and IP1 registers to be clobbered. */
2669 if ((r_type
== AARCH64_R (CALL26
) || r_type
== AARCH64_R (JUMP26
))
2670 && (branch_offset
> AARCH64_MAX_FWD_BRANCH_OFFSET
2671 || branch_offset
< AARCH64_MAX_BWD_BRANCH_OFFSET
))
2673 stub_type
= aarch64_stub_long_branch
;
2679 /* Build a name for an entry in the stub hash table. */
2682 elfNN_aarch64_stub_name (const asection
*input_section
,
2683 const asection
*sym_sec
,
2684 const struct elf_aarch64_link_hash_entry
*hash
,
2685 const Elf_Internal_Rela
*rel
)
2692 len
= 8 + 1 + strlen (hash
->root
.root
.root
.string
) + 1 + 16 + 1;
2693 stub_name
= bfd_malloc (len
);
2694 if (stub_name
!= NULL
)
2695 snprintf (stub_name
, len
, "%08x_%s+%" BFD_VMA_FMT
"x",
2696 (unsigned int) input_section
->id
,
2697 hash
->root
.root
.root
.string
,
2702 len
= 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2703 stub_name
= bfd_malloc (len
);
2704 if (stub_name
!= NULL
)
2705 snprintf (stub_name
, len
, "%08x_%x:%x+%" BFD_VMA_FMT
"x",
2706 (unsigned int) input_section
->id
,
2707 (unsigned int) sym_sec
->id
,
2708 (unsigned int) ELFNN_R_SYM (rel
->r_info
),
2715 /* Look up an entry in the stub hash. Stub entries are cached because
2716 creating the stub name takes a bit of time. */
2718 static struct elf_aarch64_stub_hash_entry
*
2719 elfNN_aarch64_get_stub_entry (const asection
*input_section
,
2720 const asection
*sym_sec
,
2721 struct elf_link_hash_entry
*hash
,
2722 const Elf_Internal_Rela
*rel
,
2723 struct elf_aarch64_link_hash_table
*htab
)
2725 struct elf_aarch64_stub_hash_entry
*stub_entry
;
2726 struct elf_aarch64_link_hash_entry
*h
=
2727 (struct elf_aarch64_link_hash_entry
*) hash
;
2728 const asection
*id_sec
;
2730 if ((input_section
->flags
& SEC_CODE
) == 0)
2733 /* If this input section is part of a group of sections sharing one
2734 stub section, then use the id of the first section in the group.
2735 Stub names need to include a section id, as there may well be
2736 more than one stub used to reach say, printf, and we need to
2737 distinguish between them. */
2738 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
2740 if (h
!= NULL
&& h
->stub_cache
!= NULL
2741 && h
->stub_cache
->h
== h
&& h
->stub_cache
->id_sec
== id_sec
)
2743 stub_entry
= h
->stub_cache
;
2749 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, h
, rel
);
2750 if (stub_name
== NULL
)
2753 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
2754 stub_name
, FALSE
, FALSE
);
2756 h
->stub_cache
= stub_entry
;
2765 /* Create a stub section. */
2768 _bfd_aarch64_create_stub_section (asection
*section
,
2769 struct elf_aarch64_link_hash_table
*htab
)
2775 namelen
= strlen (section
->name
);
2776 len
= namelen
+ sizeof (STUB_SUFFIX
);
2777 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
2781 memcpy (s_name
, section
->name
, namelen
);
2782 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
2783 return (*htab
->add_stub_section
) (s_name
, section
);
2787 /* Find or create a stub section for a link section.
2789 Fix or create the stub section used to collect stubs attached to
2790 the specified link section. */
2793 _bfd_aarch64_get_stub_for_link_section (asection
*link_section
,
2794 struct elf_aarch64_link_hash_table
*htab
)
2796 if (htab
->stub_group
[link_section
->id
].stub_sec
== NULL
)
2797 htab
->stub_group
[link_section
->id
].stub_sec
2798 = _bfd_aarch64_create_stub_section (link_section
, htab
);
2799 return htab
->stub_group
[link_section
->id
].stub_sec
;
2803 /* Find or create a stub section in the stub group for an input
2807 _bfd_aarch64_create_or_find_stub_sec (asection
*section
,
2808 struct elf_aarch64_link_hash_table
*htab
)
2810 asection
*link_sec
= htab
->stub_group
[section
->id
].link_sec
;
2811 return _bfd_aarch64_get_stub_for_link_section (link_sec
, htab
);
2815 /* Add a new stub entry in the stub group associated with an input
2816 section to the stub hash. Not all fields of the new stub entry are
2819 static struct elf_aarch64_stub_hash_entry
*
2820 _bfd_aarch64_add_stub_entry_in_group (const char *stub_name
,
2822 struct elf_aarch64_link_hash_table
*htab
)
2826 struct elf_aarch64_stub_hash_entry
*stub_entry
;
2828 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
2829 stub_sec
= _bfd_aarch64_create_or_find_stub_sec (section
, htab
);
2831 /* Enter this entry into the linker stub hash table. */
2832 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
2834 if (stub_entry
== NULL
)
2836 /* xgettext:c-format */
2837 _bfd_error_handler (_("%s: cannot create stub entry %s"),
2838 section
->owner
, stub_name
);
2842 stub_entry
->stub_sec
= stub_sec
;
2843 stub_entry
->stub_offset
= 0;
2844 stub_entry
->id_sec
= link_sec
;
2849 /* Add a new stub entry in the final stub section to the stub hash.
2850 Not all fields of the new stub entry are initialised. */
2852 static struct elf_aarch64_stub_hash_entry
*
2853 _bfd_aarch64_add_stub_entry_after (const char *stub_name
,
2854 asection
*link_section
,
2855 struct elf_aarch64_link_hash_table
*htab
)
2858 struct elf_aarch64_stub_hash_entry
*stub_entry
;
2860 stub_sec
= _bfd_aarch64_get_stub_for_link_section (link_section
, htab
);
2861 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
2863 if (stub_entry
== NULL
)
2865 _bfd_error_handler (_("cannot create stub entry %s"), stub_name
);
2869 stub_entry
->stub_sec
= stub_sec
;
2870 stub_entry
->stub_offset
= 0;
2871 stub_entry
->id_sec
= link_section
;
2878 aarch64_build_one_stub (struct bfd_hash_entry
*gen_entry
,
2879 void *in_arg ATTRIBUTE_UNUSED
)
2881 struct elf_aarch64_stub_hash_entry
*stub_entry
;
2886 bfd_vma veneered_insn_loc
;
2887 bfd_vma veneer_entry_loc
;
2888 bfd_signed_vma branch_offset
= 0;
2889 unsigned int template_size
;
2890 const uint32_t *template;
2893 /* Massage our args to the form they really have. */
2894 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
2896 stub_sec
= stub_entry
->stub_sec
;
2898 /* Make a note of the offset within the stubs for this entry. */
2899 stub_entry
->stub_offset
= stub_sec
->size
;
2900 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
2902 stub_bfd
= stub_sec
->owner
;
2904 /* This is the address of the stub destination. */
2905 sym_value
= (stub_entry
->target_value
2906 + stub_entry
->target_section
->output_offset
2907 + stub_entry
->target_section
->output_section
->vma
);
2909 if (stub_entry
->stub_type
== aarch64_stub_long_branch
)
2911 bfd_vma place
= (stub_entry
->stub_offset
+ stub_sec
->output_section
->vma
2912 + stub_sec
->output_offset
);
2914 /* See if we can relax the stub. */
2915 if (aarch64_valid_for_adrp_p (sym_value
, place
))
2916 stub_entry
->stub_type
= aarch64_select_branch_stub (sym_value
, place
);
2919 switch (stub_entry
->stub_type
)
2921 case aarch64_stub_adrp_branch
:
2922 template = aarch64_adrp_branch_stub
;
2923 template_size
= sizeof (aarch64_adrp_branch_stub
);
2925 case aarch64_stub_long_branch
:
2926 template = aarch64_long_branch_stub
;
2927 template_size
= sizeof (aarch64_long_branch_stub
);
2929 case aarch64_stub_erratum_835769_veneer
:
2930 template = aarch64_erratum_835769_stub
;
2931 template_size
= sizeof (aarch64_erratum_835769_stub
);
2933 case aarch64_stub_erratum_843419_veneer
:
2934 template = aarch64_erratum_843419_stub
;
2935 template_size
= sizeof (aarch64_erratum_843419_stub
);
2941 for (i
= 0; i
< (template_size
/ sizeof template[0]); i
++)
2943 bfd_putl32 (template[i
], loc
);
2947 template_size
= (template_size
+ 7) & ~7;
2948 stub_sec
->size
+= template_size
;
2950 switch (stub_entry
->stub_type
)
2952 case aarch64_stub_adrp_branch
:
2953 if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21
), stub_bfd
, stub_sec
,
2954 stub_entry
->stub_offset
, sym_value
))
2955 /* The stub would not have been relaxed if the offset was out
2959 if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC
), stub_bfd
, stub_sec
,
2960 stub_entry
->stub_offset
+ 4, sym_value
))
2964 case aarch64_stub_long_branch
:
2965 /* We want the value relative to the address 12 bytes back from the
2967 if (aarch64_relocate (AARCH64_R (PRELNN
), stub_bfd
, stub_sec
,
2968 stub_entry
->stub_offset
+ 16, sym_value
+ 12))
2972 case aarch64_stub_erratum_835769_veneer
:
2973 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
2974 + stub_entry
->target_section
->output_offset
2975 + stub_entry
->target_value
;
2976 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
2977 + stub_entry
->stub_sec
->output_offset
2978 + stub_entry
->stub_offset
;
2979 branch_offset
= veneered_insn_loc
- veneer_entry_loc
;
2980 branch_offset
>>= 2;
2981 branch_offset
&= 0x3ffffff;
2982 bfd_putl32 (stub_entry
->veneered_insn
,
2983 stub_sec
->contents
+ stub_entry
->stub_offset
);
2984 bfd_putl32 (template[1] | branch_offset
,
2985 stub_sec
->contents
+ stub_entry
->stub_offset
+ 4);
2988 case aarch64_stub_erratum_843419_veneer
:
2989 if (aarch64_relocate (AARCH64_R (JUMP26
), stub_bfd
, stub_sec
,
2990 stub_entry
->stub_offset
+ 4, sym_value
+ 4))
3001 /* As above, but don't actually build the stub. Just bump offset so
3002 we know stub section sizes. */
3005 aarch64_size_one_stub (struct bfd_hash_entry
*gen_entry
,
3006 void *in_arg ATTRIBUTE_UNUSED
)
3008 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3011 /* Massage our args to the form they really have. */
3012 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
3014 switch (stub_entry
->stub_type
)
3016 case aarch64_stub_adrp_branch
:
3017 size
= sizeof (aarch64_adrp_branch_stub
);
3019 case aarch64_stub_long_branch
:
3020 size
= sizeof (aarch64_long_branch_stub
);
3022 case aarch64_stub_erratum_835769_veneer
:
3023 size
= sizeof (aarch64_erratum_835769_stub
);
3025 case aarch64_stub_erratum_843419_veneer
:
3026 size
= sizeof (aarch64_erratum_843419_stub
);
3032 size
= (size
+ 7) & ~7;
3033 stub_entry
->stub_sec
->size
+= size
;
3037 /* External entry points for sizing and building linker stubs. */
3039 /* Set up various things so that we can make a list of input sections
3040 for each output section included in the link. Returns -1 on error,
3041 0 when no stubs will be needed, and 1 on success. */
3044 elfNN_aarch64_setup_section_lists (bfd
*output_bfd
,
3045 struct bfd_link_info
*info
)
3048 unsigned int bfd_count
;
3049 unsigned int top_id
, top_index
;
3051 asection
**input_list
, **list
;
3053 struct elf_aarch64_link_hash_table
*htab
=
3054 elf_aarch64_hash_table (info
);
3056 if (!is_elf_hash_table (htab
))
3059 /* Count the number of input BFDs and find the top input section id. */
3060 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3061 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
3064 for (section
= input_bfd
->sections
;
3065 section
!= NULL
; section
= section
->next
)
3067 if (top_id
< section
->id
)
3068 top_id
= section
->id
;
3071 htab
->bfd_count
= bfd_count
;
3073 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3074 htab
->stub_group
= bfd_zmalloc (amt
);
3075 if (htab
->stub_group
== NULL
)
3078 /* We can't use output_bfd->section_count here to find the top output
3079 section index as some sections may have been removed, and
3080 _bfd_strip_section_from_output doesn't renumber the indices. */
3081 for (section
= output_bfd
->sections
, top_index
= 0;
3082 section
!= NULL
; section
= section
->next
)
3084 if (top_index
< section
->index
)
3085 top_index
= section
->index
;
3088 htab
->top_index
= top_index
;
3089 amt
= sizeof (asection
*) * (top_index
+ 1);
3090 input_list
= bfd_malloc (amt
);
3091 htab
->input_list
= input_list
;
3092 if (input_list
== NULL
)
3095 /* For sections we aren't interested in, mark their entries with a
3096 value we can check later. */
3097 list
= input_list
+ top_index
;
3099 *list
= bfd_abs_section_ptr
;
3100 while (list
-- != input_list
);
3102 for (section
= output_bfd
->sections
;
3103 section
!= NULL
; section
= section
->next
)
3105 if ((section
->flags
& SEC_CODE
) != 0)
3106 input_list
[section
->index
] = NULL
;
3112 /* Used by elfNN_aarch64_next_input_section and group_sections. */
3113 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3115 /* The linker repeatedly calls this function for each input section,
3116 in the order that input sections are linked into output sections.
3117 Build lists of input sections to determine groupings between which
3118 we may insert linker stubs. */
3121 elfNN_aarch64_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
3123 struct elf_aarch64_link_hash_table
*htab
=
3124 elf_aarch64_hash_table (info
);
3126 if (isec
->output_section
->index
<= htab
->top_index
)
3128 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
3130 if (*list
!= bfd_abs_section_ptr
)
3132 /* Steal the link_sec pointer for our list. */
3133 /* This happens to make the list in reverse order,
3134 which is what we want. */
3135 PREV_SEC (isec
) = *list
;
3141 /* See whether we can group stub sections together. Grouping stub
3142 sections may result in fewer stubs. More importantly, we need to
3143 put all .init* and .fini* stubs at the beginning of the .init or
3144 .fini output sections respectively, because glibc splits the
3145 _init and _fini functions into multiple parts. Putting a stub in
3146 the middle of a function is not a good idea. */
3149 group_sections (struct elf_aarch64_link_hash_table
*htab
,
3150 bfd_size_type stub_group_size
,
3151 bfd_boolean stubs_always_before_branch
)
3153 asection
**list
= htab
->input_list
+ htab
->top_index
;
3157 asection
*tail
= *list
;
3159 if (tail
== bfd_abs_section_ptr
)
3162 while (tail
!= NULL
)
3166 bfd_size_type total
;
3170 while ((prev
= PREV_SEC (curr
)) != NULL
3171 && ((total
+= curr
->output_offset
- prev
->output_offset
)
3175 /* OK, the size from the start of CURR to the end is less
3176 than stub_group_size and thus can be handled by one stub
3177 section. (Or the tail section is itself larger than
3178 stub_group_size, in which case we may be toast.)
3179 We should really be keeping track of the total size of
3180 stubs added here, as stubs contribute to the final output
3184 prev
= PREV_SEC (tail
);
3185 /* Set up this stub group. */
3186 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3188 while (tail
!= curr
&& (tail
= prev
) != NULL
);
3190 /* But wait, there's more! Input sections up to stub_group_size
3191 bytes before the stub section can be handled by it too. */
3192 if (!stubs_always_before_branch
)
3196 && ((total
+= tail
->output_offset
- prev
->output_offset
)
3200 prev
= PREV_SEC (tail
);
3201 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3207 while (list
-- != htab
->input_list
);
3209 free (htab
->input_list
);
3214 #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3216 #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3217 #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3218 #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3219 #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3220 #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3221 #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3223 #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3224 #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3225 #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3226 #define AARCH64_ZR 0x1f
3228 /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3229 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3231 #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3232 #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3233 #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3234 #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3235 #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3236 #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3237 #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3238 #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3239 #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3240 #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3241 #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3242 #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3243 #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3244 #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3245 #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3246 #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3247 #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3248 #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3250 /* Classify an INSN if it is indeed a load/store.
3252 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3254 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3257 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned.
3262 aarch64_mem_op_p (uint32_t insn
, unsigned int *rt
, unsigned int *rt2
,
3263 bfd_boolean
*pair
, bfd_boolean
*load
)
3271 /* Bail out quickly if INSN doesn't fall into the the load-store
3273 if (!AARCH64_LDST (insn
))
3278 if (AARCH64_LDST_EX (insn
))
3280 *rt
= AARCH64_RT (insn
);
3282 if (AARCH64_BIT (insn
, 21) == 1)
3285 *rt2
= AARCH64_RT2 (insn
);
3287 *load
= AARCH64_LD (insn
);
3290 else if (AARCH64_LDST_NAP (insn
)
3291 || AARCH64_LDSTP_PI (insn
)
3292 || AARCH64_LDSTP_O (insn
)
3293 || AARCH64_LDSTP_PRE (insn
))
3296 *rt
= AARCH64_RT (insn
);
3297 *rt2
= AARCH64_RT2 (insn
);
3298 *load
= AARCH64_LD (insn
);
3301 else if (AARCH64_LDST_PCREL (insn
)
3302 || AARCH64_LDST_UI (insn
)
3303 || AARCH64_LDST_PIIMM (insn
)
3304 || AARCH64_LDST_U (insn
)
3305 || AARCH64_LDST_PREIMM (insn
)
3306 || AARCH64_LDST_RO (insn
)
3307 || AARCH64_LDST_UIMM (insn
))
3309 *rt
= AARCH64_RT (insn
);
3311 if (AARCH64_LDST_PCREL (insn
))
3313 opc
= AARCH64_BITS (insn
, 22, 2);
3314 v
= AARCH64_BIT (insn
, 26);
3315 opc_v
= opc
| (v
<< 2);
3316 *load
= (opc_v
== 1 || opc_v
== 2 || opc_v
== 3
3317 || opc_v
== 5 || opc_v
== 7);
3320 else if (AARCH64_LDST_SIMD_M (insn
)
3321 || AARCH64_LDST_SIMD_M_PI (insn
))
3323 *rt
= AARCH64_RT (insn
);
3324 *load
= AARCH64_BIT (insn
, 22);
3325 opcode
= (insn
>> 12) & 0xf;
3352 else if (AARCH64_LDST_SIMD_S (insn
)
3353 || AARCH64_LDST_SIMD_S_PI (insn
))
3355 *rt
= AARCH64_RT (insn
);
3356 r
= (insn
>> 21) & 1;
3357 *load
= AARCH64_BIT (insn
, 22);
3358 opcode
= (insn
>> 13) & 0x7;
3370 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3378 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3390 /* Return TRUE if INSN is multiply-accumulate. */
3393 aarch64_mlxl_p (uint32_t insn
)
3395 uint32_t op31
= AARCH64_OP31 (insn
);
3397 if (AARCH64_MAC (insn
)
3398 && (op31
== 0 || op31
== 1 || op31
== 5)
3399 /* Exclude MUL instructions which are encoded as a multiple accumulate
3401 && AARCH64_RA (insn
) != AARCH64_ZR
)
3407 /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3408 it is possible for a 64-bit multiply-accumulate instruction to generate an
3409 incorrect result. The details are quite complex and hard to
3410 determine statically, since branches in the code may exist in some
3411 circumstances, but all cases end with a memory (load, store, or
3412 prefetch) instruction followed immediately by the multiply-accumulate
3413 operation. We employ a linker patching technique, by moving the potentially
3414 affected multiply-accumulate instruction into a patch region and replacing
3415 the original instruction with a branch to the patch. This function checks
3416 if INSN_1 is the memory operation followed by a multiply-accumulate
3417 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3418 if INSN_1 and INSN_2 are safe. */
3421 aarch64_erratum_sequence (uint32_t insn_1
, uint32_t insn_2
)
3431 if (aarch64_mlxl_p (insn_2
)
3432 && aarch64_mem_op_p (insn_1
, &rt
, &rt2
, &pair
, &load
))
3434 /* Any SIMD memory op is independent of the subsequent MLA
3435 by definition of the erratum. */
3436 if (AARCH64_BIT (insn_1
, 26))
3439 /* If not SIMD, check for integer memory ops and MLA relationship. */
3440 rn
= AARCH64_RN (insn_2
);
3441 ra
= AARCH64_RA (insn_2
);
3442 rm
= AARCH64_RM (insn_2
);
3444 /* If this is a load and there's a true(RAW) dependency, we are safe
3445 and this is not an erratum sequence. */
3447 (rt
== rn
|| rt
== rm
|| rt
== ra
3448 || (pair
&& (rt2
== rn
|| rt2
== rm
|| rt2
== ra
))))
3451 /* We conservatively put out stubs for all other cases (including
3459 /* Used to order a list of mapping symbols by address. */
3462 elf_aarch64_compare_mapping (const void *a
, const void *b
)
3464 const elf_aarch64_section_map
*amap
= (const elf_aarch64_section_map
*) a
;
3465 const elf_aarch64_section_map
*bmap
= (const elf_aarch64_section_map
*) b
;
3467 if (amap
->vma
> bmap
->vma
)
3469 else if (amap
->vma
< bmap
->vma
)
3471 else if (amap
->type
> bmap
->type
)
3472 /* Ensure results do not depend on the host qsort for objects with
3473 multiple mapping symbols at the same address by sorting on type
3476 else if (amap
->type
< bmap
->type
)
3484 _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes
)
3486 char *stub_name
= (char *) bfd_malloc
3487 (strlen ("__erratum_835769_veneer_") + 16);
3488 sprintf (stub_name
,"__erratum_835769_veneer_%d", num_fixes
);
3492 /* Scan for Cortex-A53 erratum 835769 sequence.
3494 Return TRUE else FALSE on abnormal termination. */
3497 _bfd_aarch64_erratum_835769_scan (bfd
*input_bfd
,
3498 struct bfd_link_info
*info
,
3499 unsigned int *num_fixes_p
)
3502 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3503 unsigned int num_fixes
= *num_fixes_p
;
3508 for (section
= input_bfd
->sections
;
3510 section
= section
->next
)
3512 bfd_byte
*contents
= NULL
;
3513 struct _aarch64_elf_section_data
*sec_data
;
3516 if (elf_section_type (section
) != SHT_PROGBITS
3517 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
3518 || (section
->flags
& SEC_EXCLUDE
) != 0
3519 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
3520 || (section
->output_section
== bfd_abs_section_ptr
))
3523 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
3524 contents
= elf_section_data (section
)->this_hdr
.contents
;
3525 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
3528 sec_data
= elf_aarch64_section_data (section
);
3530 qsort (sec_data
->map
, sec_data
->mapcount
,
3531 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
3533 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3535 unsigned int span_start
= sec_data
->map
[span
].vma
;
3536 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
3537 ? sec_data
->map
[0].vma
+ section
->size
3538 : sec_data
->map
[span
+ 1].vma
);
3540 char span_type
= sec_data
->map
[span
].type
;
3542 if (span_type
== 'd')
3545 for (i
= span_start
; i
+ 4 < span_end
; i
+= 4)
3547 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
3548 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
3550 if (aarch64_erratum_sequence (insn_1
, insn_2
))
3552 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3553 char *stub_name
= _bfd_aarch64_erratum_835769_stub_name (num_fixes
);
3557 stub_entry
= _bfd_aarch64_add_stub_entry_in_group (stub_name
,
3563 stub_entry
->stub_type
= aarch64_stub_erratum_835769_veneer
;
3564 stub_entry
->target_section
= section
;
3565 stub_entry
->target_value
= i
+ 4;
3566 stub_entry
->veneered_insn
= insn_2
;
3567 stub_entry
->output_name
= stub_name
;
3572 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
3576 *num_fixes_p
= num_fixes
;
3582 /* Test if instruction INSN is ADRP. */
3585 _bfd_aarch64_adrp_p (uint32_t insn
)
3587 return ((insn
& 0x9f000000) == 0x90000000);
3591 /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
3594 _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1
, uint32_t insn_2
,
3602 return (aarch64_mem_op_p (insn_2
, &rt
, &rt2
, &pair
, &load
)
3605 && AARCH64_LDST_UIMM (insn_3
)
3606 && AARCH64_RN (insn_3
) == AARCH64_RD (insn_1
));
3610 /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
3612 Return TRUE if section CONTENTS at offset I contains one of the
3613 erratum 843419 sequences, otherwise return FALSE. If a sequence is
3614 seen set P_VENEER_I to the offset of the final LOAD/STORE
3615 instruction in the sequence.
3619 _bfd_aarch64_erratum_843419_p (bfd_byte
*contents
, bfd_vma vma
,
3620 bfd_vma i
, bfd_vma span_end
,
3621 bfd_vma
*p_veneer_i
)
3623 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
3625 if (!_bfd_aarch64_adrp_p (insn_1
))
3628 if (span_end
< i
+ 12)
3631 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
3632 uint32_t insn_3
= bfd_getl32 (contents
+ i
+ 8);
3634 if ((vma
& 0xfff) != 0xff8 && (vma
& 0xfff) != 0xffc)
3637 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_3
))
3639 *p_veneer_i
= i
+ 8;
3643 if (span_end
< i
+ 16)
3646 uint32_t insn_4
= bfd_getl32 (contents
+ i
+ 12);
3648 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_4
))
3650 *p_veneer_i
= i
+ 12;
3658 /* Resize all stub sections. */
3661 _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table
*htab
)
3665 /* OK, we've added some stubs. Find out the new size of the
3667 for (section
= htab
->stub_bfd
->sections
;
3668 section
!= NULL
; section
= section
->next
)
3670 /* Ignore non-stub sections. */
3671 if (!strstr (section
->name
, STUB_SUFFIX
))
3676 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_size_one_stub
, htab
);
3678 for (section
= htab
->stub_bfd
->sections
;
3679 section
!= NULL
; section
= section
->next
)
3681 if (!strstr (section
->name
, STUB_SUFFIX
))
3687 /* Ensure all stub sections have a size which is a multiple of
3688 4096. This is important in order to ensure that the insertion
3689 of stub sections does not in itself move existing code around
3690 in such a way that new errata sequences are created. */
3691 if (htab
->fix_erratum_843419
)
3693 section
->size
= BFD_ALIGN (section
->size
, 0x1000);
3698 /* Construct an erratum 843419 workaround stub name.
3702 _bfd_aarch64_erratum_843419_stub_name (asection
*input_section
,
3705 const bfd_size_type len
= 8 + 4 + 1 + 8 + 1 + 16 + 1;
3706 char *stub_name
= bfd_malloc (len
);
3708 if (stub_name
!= NULL
)
3709 snprintf (stub_name
, len
, "e843419@%04x_%08x_%" BFD_VMA_FMT
"x",
3710 input_section
->owner
->id
,
3716 /* Build a stub_entry structure describing an 843419 fixup.
3718 The stub_entry constructed is populated with the bit pattern INSN
3719 of the instruction located at OFFSET within input SECTION.
3721 Returns TRUE on success. */
3724 _bfd_aarch64_erratum_843419_fixup (uint32_t insn
,
3725 bfd_vma adrp_offset
,
3726 bfd_vma ldst_offset
,
3728 struct bfd_link_info
*info
)
3730 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3732 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3734 stub_name
= _bfd_aarch64_erratum_843419_stub_name (section
, ldst_offset
);
3735 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3743 /* We always place an 843419 workaround veneer in the stub section
3744 attached to the input section in which an erratum sequence has
3745 been found. This ensures that later in the link process (in
3746 elfNN_aarch64_write_section) when we copy the veneered
3747 instruction from the input section into the stub section the
3748 copied instruction will have had any relocations applied to it.
3749 If we placed workaround veneers in any other stub section then we
3750 could not assume that all relocations have been processed on the
3751 corresponding input section at the point we output the stub
3755 stub_entry
= _bfd_aarch64_add_stub_entry_after (stub_name
, section
, htab
);
3756 if (stub_entry
== NULL
)
3762 stub_entry
->adrp_offset
= adrp_offset
;
3763 stub_entry
->target_value
= ldst_offset
;
3764 stub_entry
->target_section
= section
;
3765 stub_entry
->stub_type
= aarch64_stub_erratum_843419_veneer
;
3766 stub_entry
->veneered_insn
= insn
;
3767 stub_entry
->output_name
= stub_name
;
3773 /* Scan an input section looking for the signature of erratum 843419.
3775 Scans input SECTION in INPUT_BFD looking for erratum 843419
3776 signatures, for each signature found a stub_entry is created
3777 describing the location of the erratum for subsequent fixup.
3779 Return TRUE on successful scan, FALSE on failure to scan.
3783 _bfd_aarch64_erratum_843419_scan (bfd
*input_bfd
, asection
*section
,
3784 struct bfd_link_info
*info
)
3786 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3791 if (elf_section_type (section
) != SHT_PROGBITS
3792 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
3793 || (section
->flags
& SEC_EXCLUDE
) != 0
3794 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
3795 || (section
->output_section
== bfd_abs_section_ptr
))
3800 bfd_byte
*contents
= NULL
;
3801 struct _aarch64_elf_section_data
*sec_data
;
3804 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
3805 contents
= elf_section_data (section
)->this_hdr
.contents
;
3806 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
3809 sec_data
= elf_aarch64_section_data (section
);
3811 qsort (sec_data
->map
, sec_data
->mapcount
,
3812 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
3814 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3816 unsigned int span_start
= sec_data
->map
[span
].vma
;
3817 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
3818 ? sec_data
->map
[0].vma
+ section
->size
3819 : sec_data
->map
[span
+ 1].vma
);
3821 char span_type
= sec_data
->map
[span
].type
;
3823 if (span_type
== 'd')
3826 for (i
= span_start
; i
+ 8 < span_end
; i
+= 4)
3828 bfd_vma vma
= (section
->output_section
->vma
3829 + section
->output_offset
3833 if (_bfd_aarch64_erratum_843419_p
3834 (contents
, vma
, i
, span_end
, &veneer_i
))
3836 uint32_t insn
= bfd_getl32 (contents
+ veneer_i
);
3838 if (!_bfd_aarch64_erratum_843419_fixup (insn
, i
, veneer_i
,
3845 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
3854 /* Determine and set the size of the stub section for a final link.
3856 The basic idea here is to examine all the relocations looking for
3857 PC-relative calls to a target that is unreachable with a "bl"
3861 elfNN_aarch64_size_stubs (bfd
*output_bfd
,
3863 struct bfd_link_info
*info
,
3864 bfd_signed_vma group_size
,
3865 asection
* (*add_stub_section
) (const char *,
3867 void (*layout_sections_again
) (void))
3869 bfd_size_type stub_group_size
;
3870 bfd_boolean stubs_always_before_branch
;
3871 bfd_boolean stub_changed
= FALSE
;
3872 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3873 unsigned int num_erratum_835769_fixes
= 0;
3875 /* Propagate mach to stub bfd, because it may not have been
3876 finalized when we created stub_bfd. */
3877 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
3878 bfd_get_mach (output_bfd
));
3880 /* Stash our params away. */
3881 htab
->stub_bfd
= stub_bfd
;
3882 htab
->add_stub_section
= add_stub_section
;
3883 htab
->layout_sections_again
= layout_sections_again
;
3884 stubs_always_before_branch
= group_size
< 0;
3886 stub_group_size
= -group_size
;
3888 stub_group_size
= group_size
;
3890 if (stub_group_size
== 1)
3892 /* Default values. */
3893 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
3894 stub_group_size
= 127 * 1024 * 1024;
3897 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
3899 (*htab
->layout_sections_again
) ();
3901 if (htab
->fix_erratum_835769
)
3905 for (input_bfd
= info
->input_bfds
;
3906 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
3907 if (!_bfd_aarch64_erratum_835769_scan (input_bfd
, info
,
3908 &num_erratum_835769_fixes
))
3911 _bfd_aarch64_resize_stubs (htab
);
3912 (*htab
->layout_sections_again
) ();
3915 if (htab
->fix_erratum_843419
)
3919 for (input_bfd
= info
->input_bfds
;
3921 input_bfd
= input_bfd
->link
.next
)
3925 for (section
= input_bfd
->sections
;
3927 section
= section
->next
)
3928 if (!_bfd_aarch64_erratum_843419_scan (input_bfd
, section
, info
))
3932 _bfd_aarch64_resize_stubs (htab
);
3933 (*htab
->layout_sections_again
) ();
3940 for (input_bfd
= info
->input_bfds
;
3941 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
3943 Elf_Internal_Shdr
*symtab_hdr
;
3945 Elf_Internal_Sym
*local_syms
= NULL
;
3947 /* We'll need the symbol table in a second. */
3948 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3949 if (symtab_hdr
->sh_info
== 0)
3952 /* Walk over each section attached to the input bfd. */
3953 for (section
= input_bfd
->sections
;
3954 section
!= NULL
; section
= section
->next
)
3956 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
3958 /* If there aren't any relocs, then there's nothing more
3960 if ((section
->flags
& SEC_RELOC
) == 0
3961 || section
->reloc_count
== 0
3962 || (section
->flags
& SEC_CODE
) == 0)
3965 /* If this section is a link-once section that will be
3966 discarded, then don't create any stubs. */
3967 if (section
->output_section
== NULL
3968 || section
->output_section
->owner
!= output_bfd
)
3971 /* Get the relocs. */
3973 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
3974 NULL
, info
->keep_memory
);
3975 if (internal_relocs
== NULL
)
3976 goto error_ret_free_local
;
3978 /* Now examine each relocation. */
3979 irela
= internal_relocs
;
3980 irelaend
= irela
+ section
->reloc_count
;
3981 for (; irela
< irelaend
; irela
++)
3983 unsigned int r_type
, r_indx
;
3984 enum elf_aarch64_stub_type stub_type
;
3985 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3988 bfd_vma destination
;
3989 struct elf_aarch64_link_hash_entry
*hash
;
3990 const char *sym_name
;
3992 const asection
*id_sec
;
3993 unsigned char st_type
;
3996 r_type
= ELFNN_R_TYPE (irela
->r_info
);
3997 r_indx
= ELFNN_R_SYM (irela
->r_info
);
3999 if (r_type
>= (unsigned int) R_AARCH64_end
)
4001 bfd_set_error (bfd_error_bad_value
);
4002 error_ret_free_internal
:
4003 if (elf_section_data (section
)->relocs
== NULL
)
4004 free (internal_relocs
);
4005 goto error_ret_free_local
;
4008 /* Only look for stubs on unconditional branch and
4009 branch and link instructions. */
4010 if (r_type
!= (unsigned int) AARCH64_R (CALL26
)
4011 && r_type
!= (unsigned int) AARCH64_R (JUMP26
))
4014 /* Now determine the call target, its name, value,
4021 if (r_indx
< symtab_hdr
->sh_info
)
4023 /* It's a local symbol. */
4024 Elf_Internal_Sym
*sym
;
4025 Elf_Internal_Shdr
*hdr
;
4027 if (local_syms
== NULL
)
4030 = (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4031 if (local_syms
== NULL
)
4033 = bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
4034 symtab_hdr
->sh_info
, 0,
4036 if (local_syms
== NULL
)
4037 goto error_ret_free_internal
;
4040 sym
= local_syms
+ r_indx
;
4041 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
4042 sym_sec
= hdr
->bfd_section
;
4044 /* This is an undefined symbol. It can never
4048 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
4049 sym_value
= sym
->st_value
;
4050 destination
= (sym_value
+ irela
->r_addend
4051 + sym_sec
->output_offset
4052 + sym_sec
->output_section
->vma
);
4053 st_type
= ELF_ST_TYPE (sym
->st_info
);
4055 = bfd_elf_string_from_elf_section (input_bfd
,
4056 symtab_hdr
->sh_link
,
4063 e_indx
= r_indx
- symtab_hdr
->sh_info
;
4064 hash
= ((struct elf_aarch64_link_hash_entry
*)
4065 elf_sym_hashes (input_bfd
)[e_indx
]);
4067 while (hash
->root
.root
.type
== bfd_link_hash_indirect
4068 || hash
->root
.root
.type
== bfd_link_hash_warning
)
4069 hash
= ((struct elf_aarch64_link_hash_entry
*)
4070 hash
->root
.root
.u
.i
.link
);
4072 if (hash
->root
.root
.type
== bfd_link_hash_defined
4073 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
4075 struct elf_aarch64_link_hash_table
*globals
=
4076 elf_aarch64_hash_table (info
);
4077 sym_sec
= hash
->root
.root
.u
.def
.section
;
4078 sym_value
= hash
->root
.root
.u
.def
.value
;
4079 /* For a destination in a shared library,
4080 use the PLT stub as target address to
4081 decide whether a branch stub is
4083 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4084 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4086 sym_sec
= globals
->root
.splt
;
4087 sym_value
= hash
->root
.plt
.offset
;
4088 if (sym_sec
->output_section
!= NULL
)
4089 destination
= (sym_value
4090 + sym_sec
->output_offset
4092 sym_sec
->output_section
->vma
);
4094 else if (sym_sec
->output_section
!= NULL
)
4095 destination
= (sym_value
+ irela
->r_addend
4096 + sym_sec
->output_offset
4097 + sym_sec
->output_section
->vma
);
4099 else if (hash
->root
.root
.type
== bfd_link_hash_undefined
4100 || (hash
->root
.root
.type
4101 == bfd_link_hash_undefweak
))
4103 /* For a shared library, use the PLT stub as
4104 target address to decide whether a long
4105 branch stub is needed.
4106 For absolute code, they cannot be handled. */
4107 struct elf_aarch64_link_hash_table
*globals
=
4108 elf_aarch64_hash_table (info
);
4110 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4111 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4113 sym_sec
= globals
->root
.splt
;
4114 sym_value
= hash
->root
.plt
.offset
;
4115 if (sym_sec
->output_section
!= NULL
)
4116 destination
= (sym_value
4117 + sym_sec
->output_offset
4119 sym_sec
->output_section
->vma
);
4126 bfd_set_error (bfd_error_bad_value
);
4127 goto error_ret_free_internal
;
4129 st_type
= ELF_ST_TYPE (hash
->root
.type
);
4130 sym_name
= hash
->root
.root
.root
.string
;
4133 /* Determine what (if any) linker stub is needed. */
4134 stub_type
= aarch64_type_of_stub (section
, irela
, sym_sec
,
4135 st_type
, destination
);
4136 if (stub_type
== aarch64_stub_none
)
4139 /* Support for grouping stub sections. */
4140 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
4142 /* Get the name of this stub. */
4143 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, hash
,
4146 goto error_ret_free_internal
;
4149 aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
4150 stub_name
, FALSE
, FALSE
);
4151 if (stub_entry
!= NULL
)
4153 /* The proper stub has already been created. */
4158 stub_entry
= _bfd_aarch64_add_stub_entry_in_group
4159 (stub_name
, section
, htab
);
4160 if (stub_entry
== NULL
)
4163 goto error_ret_free_internal
;
4166 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
4167 stub_entry
->target_section
= sym_sec
;
4168 stub_entry
->stub_type
= stub_type
;
4169 stub_entry
->h
= hash
;
4170 stub_entry
->st_type
= st_type
;
4172 if (sym_name
== NULL
)
4173 sym_name
= "unnamed";
4174 len
= sizeof (STUB_ENTRY_NAME
) + strlen (sym_name
);
4175 stub_entry
->output_name
= bfd_alloc (htab
->stub_bfd
, len
);
4176 if (stub_entry
->output_name
== NULL
)
4179 goto error_ret_free_internal
;
4182 snprintf (stub_entry
->output_name
, len
, STUB_ENTRY_NAME
,
4185 stub_changed
= TRUE
;
4188 /* We're done with the internal relocs, free them. */
4189 if (elf_section_data (section
)->relocs
== NULL
)
4190 free (internal_relocs
);
4197 _bfd_aarch64_resize_stubs (htab
);
4199 /* Ask the linker to do its stuff. */
4200 (*htab
->layout_sections_again
) ();
4201 stub_changed
= FALSE
;
4206 error_ret_free_local
:
4210 /* Build all the stubs associated with the current output file. The
4211 stubs are kept in a hash table attached to the main linker hash
4212 table. We also set up the .plt entries for statically linked PIC
4213 functions here. This function is called via aarch64_elf_finish in the
4217 elfNN_aarch64_build_stubs (struct bfd_link_info
*info
)
4220 struct bfd_hash_table
*table
;
4221 struct elf_aarch64_link_hash_table
*htab
;
4223 htab
= elf_aarch64_hash_table (info
);
4225 for (stub_sec
= htab
->stub_bfd
->sections
;
4226 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
4230 /* Ignore non-stub sections. */
4231 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
4234 /* Allocate memory to hold the linker stubs. */
4235 size
= stub_sec
->size
;
4236 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
4237 if (stub_sec
->contents
== NULL
&& size
!= 0)
4241 bfd_putl32 (0x14000000 | (size
>> 2), stub_sec
->contents
);
4242 stub_sec
->size
+= 4;
4245 /* Build the stubs as directed by the stub hash table. */
4246 table
= &htab
->stub_hash_table
;
4247 bfd_hash_traverse (table
, aarch64_build_one_stub
, info
);
4253 /* Add an entry to the code/data map for section SEC. */
4256 elfNN_aarch64_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
4258 struct _aarch64_elf_section_data
*sec_data
=
4259 elf_aarch64_section_data (sec
);
4260 unsigned int newidx
;
4262 if (sec_data
->map
== NULL
)
4264 sec_data
->map
= bfd_malloc (sizeof (elf_aarch64_section_map
));
4265 sec_data
->mapcount
= 0;
4266 sec_data
->mapsize
= 1;
4269 newidx
= sec_data
->mapcount
++;
4271 if (sec_data
->mapcount
> sec_data
->mapsize
)
4273 sec_data
->mapsize
*= 2;
4274 sec_data
->map
= bfd_realloc_or_free
4275 (sec_data
->map
, sec_data
->mapsize
* sizeof (elf_aarch64_section_map
));
4280 sec_data
->map
[newidx
].vma
= vma
;
4281 sec_data
->map
[newidx
].type
= type
;
4286 /* Initialise maps of insn/data for input BFDs. */
4288 bfd_elfNN_aarch64_init_maps (bfd
*abfd
)
4290 Elf_Internal_Sym
*isymbuf
;
4291 Elf_Internal_Shdr
*hdr
;
4292 unsigned int i
, localsyms
;
4294 /* Make sure that we are dealing with an AArch64 elf binary. */
4295 if (!is_aarch64_elf (abfd
))
4298 if ((abfd
->flags
& DYNAMIC
) != 0)
4301 hdr
= &elf_symtab_hdr (abfd
);
4302 localsyms
= hdr
->sh_info
;
4304 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4305 should contain the number of local symbols, which should come before any
4306 global symbols. Mapping symbols are always local. */
4307 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
, NULL
);
4309 /* No internal symbols read? Skip this BFD. */
4310 if (isymbuf
== NULL
)
4313 for (i
= 0; i
< localsyms
; i
++)
4315 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
4316 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4319 if (sec
!= NULL
&& ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
4321 name
= bfd_elf_string_from_elf_section (abfd
,
4325 if (bfd_is_aarch64_special_symbol_name
4326 (name
, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP
))
4327 elfNN_aarch64_section_map_add (sec
, name
[1], isym
->st_value
);
4332 /* Set option values needed during linking. */
4334 bfd_elfNN_aarch64_set_options (struct bfd
*output_bfd
,
4335 struct bfd_link_info
*link_info
,
4337 int no_wchar_warn
, int pic_veneer
,
4338 int fix_erratum_835769
,
4339 int fix_erratum_843419
,
4340 int no_apply_dynamic_relocs
)
4342 struct elf_aarch64_link_hash_table
*globals
;
4344 globals
= elf_aarch64_hash_table (link_info
);
4345 globals
->pic_veneer
= pic_veneer
;
4346 globals
->fix_erratum_835769
= fix_erratum_835769
;
4347 globals
->fix_erratum_843419
= fix_erratum_843419
;
4348 globals
->fix_erratum_843419_adr
= TRUE
;
4349 globals
->no_apply_dynamic_relocs
= no_apply_dynamic_relocs
;
4351 BFD_ASSERT (is_aarch64_elf (output_bfd
));
4352 elf_aarch64_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
4353 elf_aarch64_tdata (output_bfd
)->no_wchar_size_warning
= no_wchar_warn
;
4357 aarch64_calculate_got_entry_vma (struct elf_link_hash_entry
*h
,
4358 struct elf_aarch64_link_hash_table
4359 *globals
, struct bfd_link_info
*info
,
4360 bfd_vma value
, bfd
*output_bfd
,
4361 bfd_boolean
*unresolved_reloc_p
)
4363 bfd_vma off
= (bfd_vma
) - 1;
4364 asection
*basegot
= globals
->root
.sgot
;
4365 bfd_boolean dyn
= globals
->root
.dynamic_sections_created
;
4369 BFD_ASSERT (basegot
!= NULL
);
4370 off
= h
->got
.offset
;
4371 BFD_ASSERT (off
!= (bfd_vma
) - 1);
4372 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
4373 || (bfd_link_pic (info
)
4374 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4375 || (ELF_ST_VISIBILITY (h
->other
)
4376 && h
->root
.type
== bfd_link_hash_undefweak
))
4378 /* This is actually a static link, or it is a -Bsymbolic link
4379 and the symbol is defined locally. We must initialize this
4380 entry in the global offset table. Since the offset must
4381 always be a multiple of 8 (4 in the case of ILP32), we use
4382 the least significant bit to record whether we have
4383 initialized it already.
4384 When doing a dynamic link, we create a .rel(a).got relocation
4385 entry to initialize the value. This is done in the
4386 finish_dynamic_symbol routine. */
4391 bfd_put_NN (output_bfd
, value
, basegot
->contents
+ off
);
4396 *unresolved_reloc_p
= FALSE
;
4398 off
= off
+ basegot
->output_section
->vma
+ basegot
->output_offset
;
4404 /* Change R_TYPE to a more efficient access model where possible,
4405 return the new reloc type. */
4407 static bfd_reloc_code_real_type
4408 aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type
,
4409 struct elf_link_hash_entry
*h
)
4411 bfd_boolean is_local
= h
== NULL
;
4415 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
4416 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
4418 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4419 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
);
4421 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
4423 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4426 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
4428 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4429 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4431 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
4433 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4434 : BFD_RELOC_AARCH64_NONE
);
4436 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
4438 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4439 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
);
4441 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
4443 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4444 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
);
4446 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
4447 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
4449 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4450 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
);
4452 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
4453 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
: r_type
;
4455 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
4456 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
: r_type
;
4458 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
4461 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
4463 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4464 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4466 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
4467 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
4468 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
4469 /* Instructions with these relocations will become NOPs. */
4470 return BFD_RELOC_AARCH64_NONE
;
4472 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
4473 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
4474 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
4475 return is_local
? BFD_RELOC_AARCH64_NONE
: r_type
;
4478 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
4480 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4481 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
;
4483 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
4485 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4486 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
;
4497 aarch64_reloc_got_type (bfd_reloc_code_real_type r_type
)
4501 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
4502 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
4503 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
4504 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
4505 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
4506 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
4507 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
4508 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
4509 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
4512 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
4513 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
4514 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
4515 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
4516 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
4517 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
4518 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
4519 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
4522 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
4523 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
4524 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
4525 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
4526 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
4527 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
4528 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC
:
4529 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
4530 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
4531 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
4532 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
4533 return GOT_TLSDESC_GD
;
4535 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
4536 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
4537 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
4538 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
4539 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
4540 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
4550 aarch64_can_relax_tls (bfd
*input_bfd
,
4551 struct bfd_link_info
*info
,
4552 bfd_reloc_code_real_type r_type
,
4553 struct elf_link_hash_entry
*h
,
4554 unsigned long r_symndx
)
4556 unsigned int symbol_got_type
;
4557 unsigned int reloc_got_type
;
4559 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type
))
4562 symbol_got_type
= elfNN_aarch64_symbol_got_type (h
, input_bfd
, r_symndx
);
4563 reloc_got_type
= aarch64_reloc_got_type (r_type
);
4565 if (symbol_got_type
== GOT_TLS_IE
&& GOT_TLS_GD_ANY_P (reloc_got_type
))
4568 if (bfd_link_pic (info
))
4571 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
4577 /* Given the relocation code R_TYPE, return the relaxed bfd reloc
4580 static bfd_reloc_code_real_type
4581 aarch64_tls_transition (bfd
*input_bfd
,
4582 struct bfd_link_info
*info
,
4583 unsigned int r_type
,
4584 struct elf_link_hash_entry
*h
,
4585 unsigned long r_symndx
)
4587 bfd_reloc_code_real_type bfd_r_type
4588 = elfNN_aarch64_bfd_reloc_from_type (r_type
);
4590 if (! aarch64_can_relax_tls (input_bfd
, info
, bfd_r_type
, h
, r_symndx
))
4593 return aarch64_tls_transition_without_check (bfd_r_type
, h
);
4596 /* Return the base VMA address which should be subtracted from real addresses
4597 when resolving R_AARCH64_TLS_DTPREL relocation. */
4600 dtpoff_base (struct bfd_link_info
*info
)
4602 /* If tls_sec is NULL, we should have signalled an error already. */
4603 BFD_ASSERT (elf_hash_table (info
)->tls_sec
!= NULL
);
4604 return elf_hash_table (info
)->tls_sec
->vma
;
4607 /* Return the base VMA address which should be subtracted from real addresses
4608 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
4611 tpoff_base (struct bfd_link_info
*info
)
4613 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4615 /* If tls_sec is NULL, we should have signalled an error already. */
4616 BFD_ASSERT (htab
->tls_sec
!= NULL
);
4618 bfd_vma base
= align_power ((bfd_vma
) TCB_SIZE
,
4619 htab
->tls_sec
->alignment_power
);
4620 return htab
->tls_sec
->vma
- base
;
4624 symbol_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4625 unsigned long r_symndx
)
4627 /* Calculate the address of the GOT entry for symbol
4628 referred to in h. */
4630 return &h
->got
.offset
;
4634 struct elf_aarch64_local_symbol
*l
;
4636 l
= elf_aarch64_locals (input_bfd
);
4637 return &l
[r_symndx
].got_offset
;
4642 symbol_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4643 unsigned long r_symndx
)
4646 p
= symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
4651 symbol_got_offset_mark_p (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4652 unsigned long r_symndx
)
4655 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
4660 symbol_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4661 unsigned long r_symndx
)
4664 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
4670 symbol_tlsdesc_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4671 unsigned long r_symndx
)
4673 /* Calculate the address of the GOT entry for symbol
4674 referred to in h. */
4677 struct elf_aarch64_link_hash_entry
*eh
;
4678 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
4679 return &eh
->tlsdesc_got_jump_table_offset
;
4684 struct elf_aarch64_local_symbol
*l
;
4686 l
= elf_aarch64_locals (input_bfd
);
4687 return &l
[r_symndx
].tlsdesc_got_jump_table_offset
;
4692 symbol_tlsdesc_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4693 unsigned long r_symndx
)
4696 p
= symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
4701 symbol_tlsdesc_got_offset_mark_p (bfd
*input_bfd
,
4702 struct elf_link_hash_entry
*h
,
4703 unsigned long r_symndx
)
4706 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
4711 symbol_tlsdesc_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4712 unsigned long r_symndx
)
4715 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
4720 /* Data for make_branch_to_erratum_835769_stub(). */
4722 struct erratum_835769_branch_to_stub_data
4724 struct bfd_link_info
*info
;
4725 asection
*output_section
;
4729 /* Helper to insert branches to erratum 835769 stubs in the right
4730 places for a particular section. */
4733 make_branch_to_erratum_835769_stub (struct bfd_hash_entry
*gen_entry
,
4736 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4737 struct erratum_835769_branch_to_stub_data
*data
;
4739 unsigned long branch_insn
= 0;
4740 bfd_vma veneered_insn_loc
, veneer_entry_loc
;
4741 bfd_signed_vma branch_offset
;
4742 unsigned int target
;
4745 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
4746 data
= (struct erratum_835769_branch_to_stub_data
*) in_arg
;
4748 if (stub_entry
->target_section
!= data
->output_section
4749 || stub_entry
->stub_type
!= aarch64_stub_erratum_835769_veneer
)
4752 contents
= data
->contents
;
4753 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
4754 + stub_entry
->target_section
->output_offset
4755 + stub_entry
->target_value
;
4756 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
4757 + stub_entry
->stub_sec
->output_offset
4758 + stub_entry
->stub_offset
;
4759 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
4761 abfd
= stub_entry
->target_section
->owner
;
4762 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
4764 (_("%B: error: Erratum 835769 stub out "
4765 "of range (input file too large)"), abfd
);
4767 target
= stub_entry
->target_value
;
4768 branch_insn
= 0x14000000;
4769 branch_offset
>>= 2;
4770 branch_offset
&= 0x3ffffff;
4771 branch_insn
|= branch_offset
;
4772 bfd_putl32 (branch_insn
, &contents
[target
]);
4779 _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry
*gen_entry
,
4782 struct elf_aarch64_stub_hash_entry
*stub_entry
4783 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
4784 struct erratum_835769_branch_to_stub_data
*data
4785 = (struct erratum_835769_branch_to_stub_data
*) in_arg
;
4786 struct bfd_link_info
*info
;
4787 struct elf_aarch64_link_hash_table
*htab
;
4795 contents
= data
->contents
;
4796 section
= data
->output_section
;
4798 htab
= elf_aarch64_hash_table (info
);
4800 if (stub_entry
->target_section
!= section
4801 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
)
4804 insn
= bfd_getl32 (contents
+ stub_entry
->target_value
);
4806 stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
);
4808 place
= (section
->output_section
->vma
+ section
->output_offset
4809 + stub_entry
->adrp_offset
);
4810 insn
= bfd_getl32 (contents
+ stub_entry
->adrp_offset
);
4812 if ((insn
& AARCH64_ADRP_OP_MASK
) != AARCH64_ADRP_OP
)
4815 bfd_signed_vma imm
=
4816 (_bfd_aarch64_sign_extend
4817 ((bfd_vma
) _bfd_aarch64_decode_adrp_imm (insn
) << 12, 33)
4820 if (htab
->fix_erratum_843419_adr
4821 && (imm
>= AARCH64_MIN_ADRP_IMM
&& imm
<= AARCH64_MAX_ADRP_IMM
))
4823 insn
= (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP
, imm
)
4824 | AARCH64_RT (insn
));
4825 bfd_putl32 (insn
, contents
+ stub_entry
->adrp_offset
);
4829 bfd_vma veneered_insn_loc
;
4830 bfd_vma veneer_entry_loc
;
4831 bfd_signed_vma branch_offset
;
4832 uint32_t branch_insn
;
4834 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
4835 + stub_entry
->target_section
->output_offset
4836 + stub_entry
->target_value
;
4837 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
4838 + stub_entry
->stub_sec
->output_offset
4839 + stub_entry
->stub_offset
;
4840 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
4842 abfd
= stub_entry
->target_section
->owner
;
4843 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
4845 (_("%B: error: Erratum 843419 stub out "
4846 "of range (input file too large)"), abfd
);
4848 branch_insn
= 0x14000000;
4849 branch_offset
>>= 2;
4850 branch_offset
&= 0x3ffffff;
4851 branch_insn
|= branch_offset
;
4852 bfd_putl32 (branch_insn
, contents
+ stub_entry
->target_value
);
4859 elfNN_aarch64_write_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4860 struct bfd_link_info
*link_info
,
4865 struct elf_aarch64_link_hash_table
*globals
=
4866 elf_aarch64_hash_table (link_info
);
4868 if (globals
== NULL
)
4871 /* Fix code to point to erratum 835769 stubs. */
4872 if (globals
->fix_erratum_835769
)
4874 struct erratum_835769_branch_to_stub_data data
;
4876 data
.info
= link_info
;
4877 data
.output_section
= sec
;
4878 data
.contents
= contents
;
4879 bfd_hash_traverse (&globals
->stub_hash_table
,
4880 make_branch_to_erratum_835769_stub
, &data
);
4883 if (globals
->fix_erratum_843419
)
4885 struct erratum_835769_branch_to_stub_data data
;
4887 data
.info
= link_info
;
4888 data
.output_section
= sec
;
4889 data
.contents
= contents
;
4890 bfd_hash_traverse (&globals
->stub_hash_table
,
4891 _bfd_aarch64_erratum_843419_branch_to_stub
, &data
);
4897 /* Perform a relocation as part of a final link. The input relocation type
4898 should be TLS relaxed. */
4900 static bfd_reloc_status_type
4901 elfNN_aarch64_final_link_relocate (reloc_howto_type
*howto
,
4904 asection
*input_section
,
4906 Elf_Internal_Rela
*rel
,
4908 struct bfd_link_info
*info
,
4910 struct elf_link_hash_entry
*h
,
4911 bfd_boolean
*unresolved_reloc_p
,
4912 bfd_boolean save_addend
,
4913 bfd_vma
*saved_addend
,
4914 Elf_Internal_Sym
*sym
)
4916 Elf_Internal_Shdr
*symtab_hdr
;
4917 unsigned int r_type
= howto
->type
;
4918 bfd_reloc_code_real_type bfd_r_type
4919 = elfNN_aarch64_bfd_reloc_from_howto (howto
);
4920 unsigned long r_symndx
;
4921 bfd_byte
*hit_data
= contents
+ rel
->r_offset
;
4923 bfd_signed_vma signed_addend
;
4924 struct elf_aarch64_link_hash_table
*globals
;
4925 bfd_boolean weak_undef_p
;
4928 globals
= elf_aarch64_hash_table (info
);
4930 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
4932 BFD_ASSERT (is_aarch64_elf (input_bfd
));
4934 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
4936 place
= input_section
->output_section
->vma
4937 + input_section
->output_offset
+ rel
->r_offset
;
4939 /* Get addend, accumulating the addend for consecutive relocs
4940 which refer to the same offset. */
4941 signed_addend
= saved_addend
? *saved_addend
: 0;
4942 signed_addend
+= rel
->r_addend
;
4944 weak_undef_p
= (h
? h
->root
.type
== bfd_link_hash_undefweak
4945 : bfd_is_und_section (sym_sec
));
4947 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
4948 it here if it is defined in a non-shared object. */
4950 && h
->type
== STT_GNU_IFUNC
4957 if ((input_section
->flags
& SEC_ALLOC
) == 0
4958 || h
->plt
.offset
== (bfd_vma
) -1)
4961 /* STT_GNU_IFUNC symbol must go through PLT. */
4962 plt
= globals
->root
.splt
? globals
->root
.splt
: globals
->root
.iplt
;
4963 value
= (plt
->output_section
->vma
+ plt
->output_offset
+ h
->plt
.offset
);
4968 if (h
->root
.root
.string
)
4969 name
= h
->root
.root
.string
;
4971 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4974 /* xgettext:c-format */
4975 (_("%B: relocation %s against STT_GNU_IFUNC "
4976 "symbol `%s' isn't handled by %s"), input_bfd
,
4977 howto
->name
, name
, __FUNCTION__
);
4978 bfd_set_error (bfd_error_bad_value
);
4981 case BFD_RELOC_AARCH64_NN
:
4982 if (rel
->r_addend
!= 0)
4984 if (h
->root
.root
.string
)
4985 name
= h
->root
.root
.string
;
4987 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
,
4990 /* xgettext:c-format */
4991 (_("%B: relocation %s against STT_GNU_IFUNC "
4992 "symbol `%s' has non-zero addend: %d"),
4993 input_bfd
, howto
->name
, name
, rel
->r_addend
);
4994 bfd_set_error (bfd_error_bad_value
);
4998 /* Generate dynamic relocation only when there is a
4999 non-GOT reference in a shared object. */
5000 if (bfd_link_pic (info
) && h
->non_got_ref
)
5002 Elf_Internal_Rela outrel
;
5005 /* Need a dynamic relocation to get the real function
5007 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
5011 if (outrel
.r_offset
== (bfd_vma
) -1
5012 || outrel
.r_offset
== (bfd_vma
) -2)
5015 outrel
.r_offset
+= (input_section
->output_section
->vma
5016 + input_section
->output_offset
);
5018 if (h
->dynindx
== -1
5020 || bfd_link_executable (info
))
5022 /* This symbol is resolved locally. */
5023 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
5024 outrel
.r_addend
= (h
->root
.u
.def
.value
5025 + h
->root
.u
.def
.section
->output_section
->vma
5026 + h
->root
.u
.def
.section
->output_offset
);
5030 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5031 outrel
.r_addend
= 0;
5034 sreloc
= globals
->root
.irelifunc
;
5035 elf_append_rela (output_bfd
, sreloc
, &outrel
);
5037 /* If this reloc is against an external symbol, we
5038 do not want to fiddle with the addend. Otherwise,
5039 we need to include the symbol value so that it
5040 becomes an addend for the dynamic reloc. For an
5041 internal symbol, we have updated addend. */
5042 return bfd_reloc_ok
;
5045 case BFD_RELOC_AARCH64_CALL26
:
5046 case BFD_RELOC_AARCH64_JUMP26
:
5047 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5050 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
5052 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5053 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5054 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5055 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5056 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5057 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5058 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5059 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5060 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5061 base_got
= globals
->root
.sgot
;
5062 off
= h
->got
.offset
;
5064 if (base_got
== NULL
)
5067 if (off
== (bfd_vma
) -1)
5071 /* We can't use h->got.offset here to save state, or
5072 even just remember the offset, as finish_dynamic_symbol
5073 would use that as offset into .got. */
5075 if (globals
->root
.splt
!= NULL
)
5077 plt_index
= ((h
->plt
.offset
- globals
->plt_header_size
) /
5078 globals
->plt_entry_size
);
5079 off
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
5080 base_got
= globals
->root
.sgotplt
;
5084 plt_index
= h
->plt
.offset
/ globals
->plt_entry_size
;
5085 off
= plt_index
* GOT_ENTRY_SIZE
;
5086 base_got
= globals
->root
.igotplt
;
5089 if (h
->dynindx
== -1
5093 /* This references the local definition. We must
5094 initialize this entry in the global offset table.
5095 Since the offset must always be a multiple of 8,
5096 we use the least significant bit to record
5097 whether we have initialized it already.
5099 When doing a dynamic link, we create a .rela.got
5100 relocation entry to initialize the value. This
5101 is done in the finish_dynamic_symbol routine. */
5106 bfd_put_NN (output_bfd
, value
,
5107 base_got
->contents
+ off
);
5108 /* Note that this is harmless as -1 | 1 still is -1. */
5112 value
= (base_got
->output_section
->vma
5113 + base_got
->output_offset
+ off
);
5116 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
,
5118 unresolved_reloc_p
);
5122 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5123 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5124 addend
= (globals
->root
.sgot
->output_section
->vma
5125 + globals
->root
.sgot
->output_offset
);
5127 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5128 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5129 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5130 value
= (value
- globals
->root
.sgot
->output_section
->vma
5131 - globals
->root
.sgot
->output_offset
);
5136 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5137 addend
, weak_undef_p
);
5138 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
, howto
, value
);
5139 case BFD_RELOC_AARCH64_ADD_LO12
:
5140 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5147 case BFD_RELOC_AARCH64_NONE
:
5148 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5149 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5150 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5151 *unresolved_reloc_p
= FALSE
;
5152 return bfd_reloc_ok
;
5154 case BFD_RELOC_AARCH64_NN
:
5156 /* When generating a shared object or relocatable executable, these
5157 relocations are copied into the output file to be resolved at
5159 if (((bfd_link_pic (info
) == TRUE
)
5160 || globals
->root
.is_relocatable_executable
)
5161 && (input_section
->flags
& SEC_ALLOC
)
5163 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5164 || h
->root
.type
!= bfd_link_hash_undefweak
))
5166 Elf_Internal_Rela outrel
;
5168 bfd_boolean skip
, relocate
;
5171 *unresolved_reloc_p
= FALSE
;
5176 outrel
.r_addend
= signed_addend
;
5178 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
5180 if (outrel
.r_offset
== (bfd_vma
) - 1)
5182 else if (outrel
.r_offset
== (bfd_vma
) - 2)
5188 outrel
.r_offset
+= (input_section
->output_section
->vma
5189 + input_section
->output_offset
);
5192 memset (&outrel
, 0, sizeof outrel
);
5195 && (!bfd_link_pic (info
)
5196 || !(bfd_link_pie (info
)
5197 || SYMBOLIC_BIND (info
, h
))
5198 || !h
->def_regular
))
5199 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5204 /* On SVR4-ish systems, the dynamic loader cannot
5205 relocate the text and data segments independently,
5206 so the symbol does not matter. */
5208 relocate
= globals
->no_apply_dynamic_relocs
? FALSE
: TRUE
;
5209 outrel
.r_info
= ELFNN_R_INFO (symbol
, AARCH64_R (RELATIVE
));
5210 outrel
.r_addend
+= value
;
5213 sreloc
= elf_section_data (input_section
)->sreloc
;
5214 if (sreloc
== NULL
|| sreloc
->contents
== NULL
)
5215 return bfd_reloc_notsupported
;
5217 loc
= sreloc
->contents
+ sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
5218 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
5220 if (sreloc
->reloc_count
* RELOC_SIZE (globals
) > sreloc
->size
)
5222 /* Sanity to check that we have previously allocated
5223 sufficient space in the relocation section for the
5224 number of relocations we actually want to emit. */
5228 /* If this reloc is against an external symbol, we do not want to
5229 fiddle with the addend. Otherwise, we need to include the symbol
5230 value so that it becomes an addend for the dynamic reloc. */
5232 return bfd_reloc_ok
;
5234 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5235 contents
, rel
->r_offset
, value
,
5239 value
+= signed_addend
;
5242 case BFD_RELOC_AARCH64_CALL26
:
5243 case BFD_RELOC_AARCH64_JUMP26
:
5245 asection
*splt
= globals
->root
.splt
;
5246 bfd_boolean via_plt_p
=
5247 splt
!= NULL
&& h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) - 1;
5249 /* A call to an undefined weak symbol is converted to a jump to
5250 the next instruction unless a PLT entry will be created.
5251 The jump to the next instruction is optimized as a NOP.
5252 Do the same for local undefined symbols. */
5253 if (weak_undef_p
&& ! via_plt_p
)
5255 bfd_putl32 (INSN_NOP
, hit_data
);
5256 return bfd_reloc_ok
;
5259 /* If the call goes through a PLT entry, make sure to
5260 check distance to the right destination address. */
5262 value
= (splt
->output_section
->vma
5263 + splt
->output_offset
+ h
->plt
.offset
);
5265 /* Check if a stub has to be inserted because the destination
5267 struct elf_aarch64_stub_hash_entry
*stub_entry
= NULL
;
5269 /* If the branch destination is directed to plt stub, "value" will be
5270 the final destination, otherwise we should plus signed_addend, it may
5271 contain non-zero value, for example call to local function symbol
5272 which are turned into "sec_sym + sec_off", and sec_off is kept in
5274 if (! aarch64_valid_branch_p (via_plt_p
? value
: value
+ signed_addend
,
5276 /* The target is out of reach, so redirect the branch to
5277 the local stub for this function. */
5278 stub_entry
= elfNN_aarch64_get_stub_entry (input_section
, sym_sec
, h
,
5280 if (stub_entry
!= NULL
)
5282 value
= (stub_entry
->stub_offset
5283 + stub_entry
->stub_sec
->output_offset
5284 + stub_entry
->stub_sec
->output_section
->vma
);
5286 /* We have redirected the destination to stub entry address,
5287 so ignore any addend record in the original rela entry. */
5291 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5292 signed_addend
, weak_undef_p
);
5293 *unresolved_reloc_p
= FALSE
;
5296 case BFD_RELOC_AARCH64_16_PCREL
:
5297 case BFD_RELOC_AARCH64_32_PCREL
:
5298 case BFD_RELOC_AARCH64_64_PCREL
:
5299 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
5300 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5301 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
5302 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
5303 if (bfd_link_pic (info
)
5304 && (input_section
->flags
& SEC_ALLOC
) != 0
5305 && (input_section
->flags
& SEC_READONLY
) != 0
5309 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5312 /* xgettext:c-format */
5313 (_("%B: relocation %s against external symbol `%s' can not be used"
5314 " when making a shared object; recompile with -fPIC"),
5315 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
5316 h
->root
.root
.string
);
5317 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
;
5380 /* xgettext:c-format */
5381 (_("%B: Local symbol descriptor table be NULL when applying "
5382 "relocation %s against local symbol"),
5383 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
5387 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
5388 base_got
= globals
->root
.sgot
;
5389 bfd_vma got_entry_addr
= (base_got
->output_section
->vma
5390 + base_got
->output_offset
+ off
);
5392 if (!symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
5394 bfd_put_64 (output_bfd
, value
, base_got
->contents
+ off
);
5396 if (bfd_link_pic (info
))
5399 Elf_Internal_Rela outrel
;
5401 /* For local symbol, we have done absolute relocation in static
5402 linking stageh. While for share library, we need to update
5403 the content of GOT entry according to the share objects
5404 loading base address. So we need to generate a
5405 R_AARCH64_RELATIVE reloc for dynamic linker. */
5406 s
= globals
->root
.srelgot
;
5410 outrel
.r_offset
= got_entry_addr
;
5411 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
5412 outrel
.r_addend
= value
;
5413 elf_append_rela (output_bfd
, s
, &outrel
);
5416 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
5419 /* Update the relocation value to GOT entry addr as we have transformed
5420 the direct data access into indirect data access through GOT. */
5421 value
= got_entry_addr
;
5423 if (bfd_r_type
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5424 || bfd_r_type
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
)
5425 addend
= base_got
->output_section
->vma
+ base_got
->output_offset
;
5427 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5428 addend
, weak_undef_p
);
5433 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5434 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5435 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5437 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
, value
,
5439 unresolved_reloc_p
);
5442 struct elf_aarch64_local_symbol
*locals
5443 = elf_aarch64_locals (input_bfd
);
5447 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5449 /* xgettext:c-format */
5450 (_("%B: Local symbol descriptor table be NULL when applying "
5451 "relocation %s against local symbol"),
5452 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
5456 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
5457 base_got
= globals
->root
.sgot
;
5458 if (base_got
== NULL
)
5461 bfd_vma got_entry_addr
= (base_got
->output_section
->vma
5462 + base_got
->output_offset
+ off
);
5464 if (!symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
5466 bfd_put_64 (output_bfd
, value
, base_got
->contents
+ off
);
5468 if (bfd_link_pic (info
))
5471 Elf_Internal_Rela outrel
;
5473 /* For local symbol, we have done absolute relocation in static
5474 linking stage. While for share library, we need to update
5475 the content of GOT entry according to the share objects
5476 loading base address. So we need to generate a
5477 R_AARCH64_RELATIVE reloc for dynamic linker. */
5478 s
= globals
->root
.srelgot
;
5482 outrel
.r_offset
= got_entry_addr
;
5483 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
5484 outrel
.r_addend
= value
;
5485 elf_append_rela (output_bfd
, s
, &outrel
);
5488 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
5492 /* Update the relocation value to GOT entry addr as we have transformed
5493 the direct data access into indirect data access through GOT. */
5494 value
= symbol_got_offset (input_bfd
, h
, r_symndx
);
5495 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5497 *unresolved_reloc_p
= FALSE
;
5500 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
5501 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
5502 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
5503 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
5504 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
5505 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
5506 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
5507 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
5508 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
5509 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5510 if (globals
->root
.sgot
== NULL
)
5511 return bfd_reloc_notsupported
;
5513 value
= (symbol_got_offset (input_bfd
, h
, r_symndx
)
5514 + globals
->root
.sgot
->output_section
->vma
5515 + globals
->root
.sgot
->output_offset
);
5517 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5519 *unresolved_reloc_p
= FALSE
;
5522 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
5523 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
5524 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
5525 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
5526 if (globals
->root
.sgot
== NULL
)
5527 return bfd_reloc_notsupported
;
5529 value
= symbol_got_offset (input_bfd
, h
, r_symndx
);
5530 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5532 *unresolved_reloc_p
= FALSE
;
5535 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12
:
5536 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12
:
5537 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC
:
5538 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12
:
5539 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC
:
5540 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12
:
5541 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC
:
5542 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12
:
5543 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC
:
5544 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12
:
5545 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC
:
5546 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0
:
5547 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC
:
5548 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1
:
5549 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC
:
5550 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2
:
5551 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5552 signed_addend
- dtpoff_base (info
),
5556 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
:
5557 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12
:
5558 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC
:
5559 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0
:
5560 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
:
5561 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
:
5562 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
:
5563 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
:
5564 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5565 signed_addend
- tpoff_base (info
),
5567 *unresolved_reloc_p
= FALSE
;
5570 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
5571 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
5572 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
5573 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
5574 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC
:
5575 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
5576 if (globals
->root
.sgot
== NULL
)
5577 return bfd_reloc_notsupported
;
5578 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
5579 + globals
->root
.sgotplt
->output_section
->vma
5580 + globals
->root
.sgotplt
->output_offset
5581 + globals
->sgotplt_jump_table_size
);
5583 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5585 *unresolved_reloc_p
= FALSE
;
5588 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
5589 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
5590 if (globals
->root
.sgot
== NULL
)
5591 return bfd_reloc_notsupported
;
5593 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
5594 + globals
->root
.sgotplt
->output_section
->vma
5595 + globals
->root
.sgotplt
->output_offset
5596 + globals
->sgotplt_jump_table_size
);
5598 value
-= (globals
->root
.sgot
->output_section
->vma
5599 + globals
->root
.sgot
->output_offset
);
5601 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5603 *unresolved_reloc_p
= FALSE
;
5607 return bfd_reloc_notsupported
;
5611 *saved_addend
= value
;
5613 /* Only apply the final relocation in a sequence. */
5615 return bfd_reloc_continue
;
5617 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
5621 /* Handle TLS relaxations. Relaxing is possible for symbols that use
5622 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
5625 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
5626 is to then call final_link_relocate. Return other values in the
5629 static bfd_reloc_status_type
5630 elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table
*globals
,
5631 bfd
*input_bfd
, bfd_byte
*contents
,
5632 Elf_Internal_Rela
*rel
, struct elf_link_hash_entry
*h
)
5634 bfd_boolean is_local
= h
== NULL
;
5635 unsigned int r_type
= ELFNN_R_TYPE (rel
->r_info
);
5638 BFD_ASSERT (globals
&& input_bfd
&& contents
&& rel
);
5640 switch (elfNN_aarch64_bfd_reloc_from_type (r_type
))
5642 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
5643 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
5646 /* GD->LE relaxation:
5647 adrp x0, :tlsgd:var => movz x0, :tprel_g1:var
5649 adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var
5651 bfd_putl32 (0xd2a00000, contents
+ rel
->r_offset
);
5652 return bfd_reloc_continue
;
5656 /* GD->IE relaxation:
5657 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
5659 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
5661 return bfd_reloc_continue
;
5664 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
5668 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
5671 /* Tiny TLSDESC->LE relaxation:
5672 ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var
5673 adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var
5677 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
5678 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
5680 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
5681 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
5682 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5684 bfd_putl32 (0xd2a00000, contents
+ rel
->r_offset
);
5685 bfd_putl32 (0xf2800000, contents
+ rel
->r_offset
+ 4);
5686 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
5687 return bfd_reloc_continue
;
5691 /* Tiny TLSDESC->IE relaxation:
5692 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
5693 adr x0, :tlsdesc:var => nop
5697 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
5698 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
5700 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5701 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5703 bfd_putl32 (0x58000000, contents
+ rel
->r_offset
);
5704 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
5705 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
5706 return bfd_reloc_continue
;
5709 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
5712 /* Tiny GD->LE relaxation:
5713 adr x0, :tlsgd:var => mrs x1, tpidr_el0
5714 bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12
5715 nop => add x0, x0, #:tprel_lo12_nc:x
5718 /* First kill the tls_get_addr reloc on the bl instruction. */
5719 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
5721 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 0);
5722 bfd_putl32 (0x91400020, contents
+ rel
->r_offset
+ 4);
5723 bfd_putl32 (0x91000000, contents
+ rel
->r_offset
+ 8);
5725 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
5726 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
));
5727 rel
[1].r_offset
= rel
->r_offset
+ 8;
5729 /* Move the current relocation to the second instruction in
5732 rel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
5733 AARCH64_R (TLSLE_ADD_TPREL_HI12
));
5734 return bfd_reloc_continue
;
5738 /* Tiny GD->IE relaxation:
5739 adr x0, :tlsgd:var => ldr x0, :gottprel:var
5740 bl __tls_get_addr => mrs x1, tpidr_el0
5741 nop => add x0, x0, x1
5744 /* First kill the tls_get_addr reloc on the bl instruction. */
5745 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
5746 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5748 bfd_putl32 (0x58000000, contents
+ rel
->r_offset
);
5749 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
5750 bfd_putl32 (0x8b000020, contents
+ rel
->r_offset
+ 8);
5751 return bfd_reloc_continue
;
5755 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
5756 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSGD_MOVW_G0_NC
));
5757 BFD_ASSERT (rel
->r_offset
+ 12 == rel
[2].r_offset
);
5758 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (CALL26
));
5762 /* Large GD->LE relaxation:
5763 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
5764 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
5765 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
5766 bl __tls_get_addr => mrs x1, tpidr_el0
5767 nop => add x0, x0, x1
5769 rel
[2].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
5770 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
5771 rel
[2].r_offset
= rel
->r_offset
+ 8;
5773 bfd_putl32 (0xd2c00000, contents
+ rel
->r_offset
+ 0);
5774 bfd_putl32 (0xf2a00000, contents
+ rel
->r_offset
+ 4);
5775 bfd_putl32 (0xf2800000, contents
+ rel
->r_offset
+ 8);
5776 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
5777 bfd_putl32 (0x8b000020, contents
+ rel
->r_offset
+ 16);
5781 /* Large GD->IE relaxation:
5782 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
5783 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
5784 add x0, gp, x0 => ldr x0, [gp, x0]
5785 bl __tls_get_addr => mrs x1, tpidr_el0
5786 nop => add x0, x0, x1
5788 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5789 bfd_putl32 (0xd2a80000, contents
+ rel
->r_offset
+ 0);
5790 bfd_putl32 (0x58000000, contents
+ rel
->r_offset
+ 8);
5791 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
5792 bfd_putl32 (0x8b000020, contents
+ rel
->r_offset
+ 16);
5794 return bfd_reloc_continue
;
5796 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
5797 return bfd_reloc_continue
;
5800 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
5801 return bfd_reloc_continue
;
5803 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
5806 /* GD->LE relaxation:
5807 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
5809 bfd_putl32 (0xf2800000, contents
+ rel
->r_offset
);
5810 return bfd_reloc_continue
;
5814 /* GD->IE relaxation:
5815 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var]
5817 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
5819 bfd_putl32 (insn
, contents
+ rel
->r_offset
);
5820 return bfd_reloc_continue
;
5823 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
5826 /* GD->LE relaxation
5827 add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var
5828 bl __tls_get_addr => mrs x1, tpidr_el0
5829 nop => add x0, x1, x0
5832 /* First kill the tls_get_addr reloc on the bl instruction. */
5833 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
5834 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5836 bfd_putl32 (0xf2800000, contents
+ rel
->r_offset
);
5837 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
5838 bfd_putl32 (0x8b000020, contents
+ rel
->r_offset
+ 8);
5839 return bfd_reloc_continue
;
5843 /* GD->IE relaxation
5844 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
5845 BL __tls_get_addr => mrs x1, tpidr_el0
5847 NOP => add R0, R1, R0
5849 Where R is x for lp64 mode, and w for ilp32 mode. */
5851 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
5853 /* Remove the relocation on the BL instruction. */
5854 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5856 /* We choose to fixup the BL and NOP instructions using the
5857 offset from the second relocation to allow flexibility in
5858 scheduling instructions between the ADD and BL. */
5860 bfd_putl32 (0xb9400000, contents
+ rel
->r_offset
);
5861 bfd_putl32 (0x0b000020, contents
+ rel
[1].r_offset
+ 4);
5863 bfd_putl32 (0xf9400000, contents
+ rel
->r_offset
);
5864 bfd_putl32 (0x8b000020, contents
+ rel
[1].r_offset
+ 4);
5866 bfd_putl32 (0xd53bd041, contents
+ rel
[1].r_offset
);
5867 return bfd_reloc_continue
;
5870 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5871 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
5872 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5873 /* GD->IE/LE relaxation:
5874 add x0, x0, #:tlsdesc_lo12:var => nop
5877 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
);
5878 return bfd_reloc_ok
;
5880 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5883 /* GD->LE relaxation:
5884 ldr xd, [gp, xn] => movk x0, #:tprel_g0_nc:var
5886 bfd_putl32 (0xf2800000, contents
+ rel
->r_offset
);
5887 return bfd_reloc_continue
;
5891 /* GD->IE relaxation:
5892 ldr xd, [gp, xn] => ldr x0, [gp, xn]
5894 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
5896 bfd_putl32 (insn
, contents
+ rel
->r_offset
);
5897 return bfd_reloc_ok
;
5900 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
5901 /* GD->LE relaxation:
5902 movk xd, #:tlsdesc_off_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
5904 movk xd, #:tlsdesc_off_g0_nc:var => movk xd, #:gottprel_g0_nc:var
5907 bfd_putl32 (0xf2a00000, contents
+ rel
->r_offset
);
5908 return bfd_reloc_continue
;
5910 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
5913 /* GD->LE relaxation:
5914 movz xd, #:tlsdesc_off_g1:var => movz x0, #:tprel_g2:var, lsl #32
5916 bfd_putl32 (0xd2c00000, contents
+ rel
->r_offset
);
5917 return bfd_reloc_continue
;
5921 /* GD->IE relaxation:
5922 movz xd, #:tlsdesc_off_g1:var => movz xd, #:gottprel_g1:var, lsl #16
5924 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
5925 bfd_putl32 (0xd2a00000 | (insn
& 0x1f), contents
+ rel
->r_offset
);
5926 return bfd_reloc_continue
;
5929 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
5930 /* IE->LE relaxation:
5931 adrp xd, :gottprel:var => movz xd, :tprel_g1:var
5935 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
5936 bfd_putl32 (0xd2a00000 | (insn
& 0x1f), contents
+ rel
->r_offset
);
5938 return bfd_reloc_continue
;
5940 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
5941 /* IE->LE relaxation:
5942 ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var
5946 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
5947 bfd_putl32 (0xf2800000 | (insn
& 0x1f), contents
+ rel
->r_offset
);
5949 return bfd_reloc_continue
;
5951 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5952 /* LD->LE relaxation (tiny):
5953 adr x0, :tlsldm:x => mrs x0, tpidr_el0
5954 bl __tls_get_addr => add R0, R0, TCB_SIZE
5956 Where R is x for lp64 mode, and w for ilp32 mode. */
5959 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
5960 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
5961 /* No need of CALL26 relocation for tls_get_addr. */
5962 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5963 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
+ 0);
5965 bfd_putl32 (0x91004000, contents
+ rel
->r_offset
+ 4);
5967 bfd_putl32 (0x11002000, contents
+ rel
->r_offset
+ 4);
5969 return bfd_reloc_ok
;
5971 return bfd_reloc_continue
;
5973 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
5974 /* LD->LE relaxation (small):
5975 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
5979 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
);
5980 return bfd_reloc_ok
;
5982 return bfd_reloc_continue
;
5984 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
5985 /* LD->LE relaxation (small):
5986 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
5987 bl __tls_get_addr => nop
5989 Where R is x for lp64 mode, and w for ilp32 mode. */
5992 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
5993 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
5994 /* No need of CALL26 relocation for tls_get_addr. */
5995 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5997 bfd_putl32 (0x91004000, contents
+ rel
->r_offset
+ 0);
5999 bfd_putl32 (0x11002000, contents
+ rel
->r_offset
+ 0);
6001 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
6002 return bfd_reloc_ok
;
6004 return bfd_reloc_continue
;
6007 return bfd_reloc_continue
;
6010 return bfd_reloc_ok
;
6013 /* Relocate an AArch64 ELF section. */
6016 elfNN_aarch64_relocate_section (bfd
*output_bfd
,
6017 struct bfd_link_info
*info
,
6019 asection
*input_section
,
6021 Elf_Internal_Rela
*relocs
,
6022 Elf_Internal_Sym
*local_syms
,
6023 asection
**local_sections
)
6025 Elf_Internal_Shdr
*symtab_hdr
;
6026 struct elf_link_hash_entry
**sym_hashes
;
6027 Elf_Internal_Rela
*rel
;
6028 Elf_Internal_Rela
*relend
;
6030 struct elf_aarch64_link_hash_table
*globals
;
6031 bfd_boolean save_addend
= FALSE
;
6034 globals
= elf_aarch64_hash_table (info
);
6036 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
6037 sym_hashes
= elf_sym_hashes (input_bfd
);
6040 relend
= relocs
+ input_section
->reloc_count
;
6041 for (; rel
< relend
; rel
++)
6043 unsigned int r_type
;
6044 bfd_reloc_code_real_type bfd_r_type
;
6045 bfd_reloc_code_real_type relaxed_bfd_r_type
;
6046 reloc_howto_type
*howto
;
6047 unsigned long r_symndx
;
6048 Elf_Internal_Sym
*sym
;
6050 struct elf_link_hash_entry
*h
;
6052 bfd_reloc_status_type r
;
6055 bfd_boolean unresolved_reloc
= FALSE
;
6056 char *error_message
= NULL
;
6058 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
6059 r_type
= ELFNN_R_TYPE (rel
->r_info
);
6061 bfd_reloc
.howto
= elfNN_aarch64_howto_from_type (r_type
);
6062 howto
= bfd_reloc
.howto
;
6066 /* xgettext:c-format */
6068 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
6069 input_bfd
, input_section
, r_type
);
6072 bfd_r_type
= elfNN_aarch64_bfd_reloc_from_howto (howto
);
6078 if (r_symndx
< symtab_hdr
->sh_info
)
6080 sym
= local_syms
+ r_symndx
;
6081 sym_type
= ELFNN_ST_TYPE (sym
->st_info
);
6082 sec
= local_sections
[r_symndx
];
6084 /* An object file might have a reference to a local
6085 undefined symbol. This is a daft object file, but we
6086 should at least do something about it. */
6087 if (r_type
!= R_AARCH64_NONE
&& r_type
!= R_AARCH64_NULL
6088 && bfd_is_und_section (sec
)
6089 && ELF_ST_BIND (sym
->st_info
) != STB_WEAK
)
6090 (*info
->callbacks
->undefined_symbol
)
6091 (info
, bfd_elf_string_from_elf_section
6092 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
),
6093 input_bfd
, input_section
, rel
->r_offset
, TRUE
);
6095 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6097 /* Relocate against local STT_GNU_IFUNC symbol. */
6098 if (!bfd_link_relocatable (info
)
6099 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
6101 h
= elfNN_aarch64_get_local_sym_hash (globals
, input_bfd
,
6106 /* Set STT_GNU_IFUNC symbol value. */
6107 h
->root
.u
.def
.value
= sym
->st_value
;
6108 h
->root
.u
.def
.section
= sec
;
6113 bfd_boolean warned
, ignored
;
6115 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6116 r_symndx
, symtab_hdr
, sym_hashes
,
6118 unresolved_reloc
, warned
, ignored
);
6123 if (sec
!= NULL
&& discarded_section (sec
))
6124 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
6125 rel
, 1, relend
, howto
, 0, contents
);
6127 if (bfd_link_relocatable (info
))
6131 name
= h
->root
.root
.string
;
6134 name
= (bfd_elf_string_from_elf_section
6135 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
6136 if (name
== NULL
|| *name
== '\0')
6137 name
= bfd_section_name (input_bfd
, sec
);
6141 && r_type
!= R_AARCH64_NONE
6142 && r_type
!= R_AARCH64_NULL
6144 || h
->root
.type
== bfd_link_hash_defined
6145 || h
->root
.type
== bfd_link_hash_defweak
)
6146 && IS_AARCH64_TLS_RELOC (bfd_r_type
) != (sym_type
== STT_TLS
))
6149 ((sym_type
== STT_TLS
6150 /* xgettext:c-format */
6151 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6152 /* xgettext:c-format */
6153 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6155 input_section
, (long) rel
->r_offset
, howto
->name
, name
);
6158 /* We relax only if we can see that there can be a valid transition
6159 from a reloc type to another.
6160 We call elfNN_aarch64_final_link_relocate unless we're completely
6161 done, i.e., the relaxation produced the final output we want. */
6163 relaxed_bfd_r_type
= aarch64_tls_transition (input_bfd
, info
, r_type
,
6165 if (relaxed_bfd_r_type
!= bfd_r_type
)
6167 bfd_r_type
= relaxed_bfd_r_type
;
6168 howto
= elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type
);
6169 BFD_ASSERT (howto
!= NULL
);
6170 r_type
= howto
->type
;
6171 r
= elfNN_aarch64_tls_relax (globals
, input_bfd
, contents
, rel
, h
);
6172 unresolved_reloc
= 0;
6175 r
= bfd_reloc_continue
;
6177 /* There may be multiple consecutive relocations for the
6178 same offset. In that case we are supposed to treat the
6179 output of each relocation as the addend for the next. */
6180 if (rel
+ 1 < relend
6181 && rel
->r_offset
== rel
[1].r_offset
6182 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NONE
6183 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NULL
)
6186 save_addend
= FALSE
;
6188 if (r
== bfd_reloc_continue
)
6189 r
= elfNN_aarch64_final_link_relocate (howto
, input_bfd
, output_bfd
,
6190 input_section
, contents
, rel
,
6191 relocation
, info
, sec
,
6192 h
, &unresolved_reloc
,
6193 save_addend
, &addend
, sym
);
6195 switch (elfNN_aarch64_bfd_reloc_from_type (r_type
))
6197 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6198 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6199 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6200 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6201 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6202 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6203 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6204 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6205 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6207 bfd_boolean need_relocs
= FALSE
;
6212 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6213 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6216 (bfd_link_pic (info
) || indx
!= 0) &&
6218 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6219 || h
->root
.type
!= bfd_link_hash_undefweak
);
6221 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6225 Elf_Internal_Rela rela
;
6226 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPMOD
));
6228 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
6229 globals
->root
.sgot
->output_offset
+ off
;
6232 loc
= globals
->root
.srelgot
->contents
;
6233 loc
+= globals
->root
.srelgot
->reloc_count
++
6234 * RELOC_SIZE (htab
);
6235 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6237 bfd_reloc_code_real_type real_type
=
6238 elfNN_aarch64_bfd_reloc_from_type (r_type
);
6240 if (real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
6241 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6242 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
)
6244 /* For local dynamic, don't generate DTPREL in any case.
6245 Initialize the DTPREL slot into zero, so we get module
6246 base address when invoke runtime TLS resolver. */
6247 bfd_put_NN (output_bfd
, 0,
6248 globals
->root
.sgot
->contents
+ off
6253 bfd_put_NN (output_bfd
,
6254 relocation
- dtpoff_base (info
),
6255 globals
->root
.sgot
->contents
+ off
6260 /* This TLS symbol is global. We emit a
6261 relocation to fixup the tls offset at load
6264 ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPREL
));
6267 (globals
->root
.sgot
->output_section
->vma
6268 + globals
->root
.sgot
->output_offset
+ off
6271 loc
= globals
->root
.srelgot
->contents
;
6272 loc
+= globals
->root
.srelgot
->reloc_count
++
6273 * RELOC_SIZE (globals
);
6274 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6275 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
6276 globals
->root
.sgot
->contents
+ off
6282 bfd_put_NN (output_bfd
, (bfd_vma
) 1,
6283 globals
->root
.sgot
->contents
+ off
);
6284 bfd_put_NN (output_bfd
,
6285 relocation
- dtpoff_base (info
),
6286 globals
->root
.sgot
->contents
+ off
6290 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6294 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6295 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
6296 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6297 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6298 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6299 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6301 bfd_boolean need_relocs
= FALSE
;
6306 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6308 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6311 (bfd_link_pic (info
) || indx
!= 0) &&
6313 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6314 || h
->root
.type
!= bfd_link_hash_undefweak
);
6316 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6320 Elf_Internal_Rela rela
;
6323 rela
.r_addend
= relocation
- dtpoff_base (info
);
6327 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_TPREL
));
6328 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
6329 globals
->root
.sgot
->output_offset
+ off
;
6331 loc
= globals
->root
.srelgot
->contents
;
6332 loc
+= globals
->root
.srelgot
->reloc_count
++
6333 * RELOC_SIZE (htab
);
6335 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6337 bfd_put_NN (output_bfd
, rela
.r_addend
,
6338 globals
->root
.sgot
->contents
+ off
);
6341 bfd_put_NN (output_bfd
, relocation
- tpoff_base (info
),
6342 globals
->root
.sgot
->contents
+ off
);
6344 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6348 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
6349 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6350 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6351 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
6352 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6353 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6354 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6355 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6357 bfd_boolean need_relocs
= FALSE
;
6358 int indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6359 bfd_vma off
= symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
);
6361 need_relocs
= (h
== NULL
6362 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6363 || h
->root
.type
!= bfd_link_hash_undefweak
);
6365 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6366 BFD_ASSERT (globals
->root
.sgot
!= NULL
);
6371 Elf_Internal_Rela rela
;
6372 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLSDESC
));
6375 rela
.r_offset
= (globals
->root
.sgotplt
->output_section
->vma
6376 + globals
->root
.sgotplt
->output_offset
6377 + off
+ globals
->sgotplt_jump_table_size
);
6380 rela
.r_addend
= relocation
- dtpoff_base (info
);
6382 /* Allocate the next available slot in the PLT reloc
6383 section to hold our R_AARCH64_TLSDESC, the next
6384 available slot is determined from reloc_count,
6385 which we step. But note, reloc_count was
6386 artifically moved down while allocating slots for
6387 real PLT relocs such that all of the PLT relocs
6388 will fit above the initial reloc_count and the
6389 extra stuff will fit below. */
6390 loc
= globals
->root
.srelplt
->contents
;
6391 loc
+= globals
->root
.srelplt
->reloc_count
++
6392 * RELOC_SIZE (globals
);
6394 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6396 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
6397 globals
->root
.sgotplt
->contents
+ off
+
6398 globals
->sgotplt_jump_table_size
);
6399 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
6400 globals
->root
.sgotplt
->contents
+ off
+
6401 globals
->sgotplt_jump_table_size
+
6405 symbol_tlsdesc_got_offset_mark (input_bfd
, h
, r_symndx
);
6412 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6413 because such sections are not SEC_ALLOC and thus ld.so will
6414 not process them. */
6415 if (unresolved_reloc
6416 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
6418 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
6419 +rel
->r_offset
) != (bfd_vma
) - 1)
6422 /* xgettext:c-format */
6423 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6424 input_bfd
, input_section
, (long) rel
->r_offset
, howto
->name
,
6425 h
->root
.root
.string
);
6429 if (r
!= bfd_reloc_ok
&& r
!= bfd_reloc_continue
)
6431 bfd_reloc_code_real_type real_r_type
6432 = elfNN_aarch64_bfd_reloc_from_type (r_type
);
6436 case bfd_reloc_overflow
:
6437 (*info
->callbacks
->reloc_overflow
)
6438 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
, (bfd_vma
) 0,
6439 input_bfd
, input_section
, rel
->r_offset
);
6440 if (real_r_type
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
6441 || real_r_type
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
)
6443 (*info
->callbacks
->warning
)
6445 _("Too many GOT entries for -fpic, "
6446 "please recompile with -fPIC"),
6447 name
, input_bfd
, input_section
, rel
->r_offset
);
6450 /* Overflow can occur when a variable is referenced with a type
6451 that has a larger alignment than the type with which it was
6453 file1.c: extern int foo; int a (void) { return foo; }
6454 file2.c: char bar, foo, baz;
6455 If the variable is placed into a data section at an offset
6456 that is incompatible with the larger alignment requirement
6457 overflow will occur. (Strictly speaking this is not overflow
6458 but rather an alignment problem, but the bfd_reloc_ error
6459 enum does not have a value to cover that situation).
6461 Try to catch this situation here and provide a more helpful
6462 error message to the user. */
6463 if (addend
& ((1 << howto
->rightshift
) - 1)
6464 /* FIXME: Are we testing all of the appropriate reloc
6466 && (real_r_type
== BFD_RELOC_AARCH64_LD_LO19_PCREL
6467 || real_r_type
== BFD_RELOC_AARCH64_LDST16_LO12
6468 || real_r_type
== BFD_RELOC_AARCH64_LDST32_LO12
6469 || real_r_type
== BFD_RELOC_AARCH64_LDST64_LO12
6470 || real_r_type
== BFD_RELOC_AARCH64_LDST128_LO12
))
6472 info
->callbacks
->warning
6473 (info
, _("One possible cause of this error is that the \
6474 symbol is being referenced in the indicated code as if it had a larger \
6475 alignment than was declared where it was defined."),
6476 name
, input_bfd
, input_section
, rel
->r_offset
);
6480 case bfd_reloc_undefined
:
6481 (*info
->callbacks
->undefined_symbol
)
6482 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
6485 case bfd_reloc_outofrange
:
6486 error_message
= _("out of range");
6489 case bfd_reloc_notsupported
:
6490 error_message
= _("unsupported relocation");
6493 case bfd_reloc_dangerous
:
6494 /* error_message should already be set. */
6498 error_message
= _("unknown error");
6502 BFD_ASSERT (error_message
!= NULL
);
6503 (*info
->callbacks
->reloc_dangerous
)
6504 (info
, error_message
, input_bfd
, input_section
, rel
->r_offset
);
6516 /* Set the right machine number. */
6519 elfNN_aarch64_object_p (bfd
*abfd
)
6522 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64_ilp32
);
6524 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64
);
6529 /* Function to keep AArch64 specific flags in the ELF header. */
6532 elfNN_aarch64_set_private_flags (bfd
*abfd
, flagword flags
)
6534 if (elf_flags_init (abfd
) && elf_elfheader (abfd
)->e_flags
!= flags
)
6539 elf_elfheader (abfd
)->e_flags
= flags
;
6540 elf_flags_init (abfd
) = TRUE
;
6546 /* Merge backend specific data from an object file to the output
6547 object file when linking. */
6550 elfNN_aarch64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
6552 bfd
*obfd
= info
->output_bfd
;
6555 bfd_boolean flags_compatible
= TRUE
;
6558 /* Check if we have the same endianess. */
6559 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
6562 if (!is_aarch64_elf (ibfd
) || !is_aarch64_elf (obfd
))
6565 /* The input BFD must have had its flags initialised. */
6566 /* The following seems bogus to me -- The flags are initialized in
6567 the assembler but I don't think an elf_flags_init field is
6568 written into the object. */
6569 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6571 in_flags
= elf_elfheader (ibfd
)->e_flags
;
6572 out_flags
= elf_elfheader (obfd
)->e_flags
;
6574 if (!elf_flags_init (obfd
))
6576 /* If the input is the default architecture and had the default
6577 flags then do not bother setting the flags for the output
6578 architecture, instead allow future merges to do this. If no
6579 future merges ever set these flags then they will retain their
6580 uninitialised values, which surprise surprise, correspond
6581 to the default values. */
6582 if (bfd_get_arch_info (ibfd
)->the_default
6583 && elf_elfheader (ibfd
)->e_flags
== 0)
6586 elf_flags_init (obfd
) = TRUE
;
6587 elf_elfheader (obfd
)->e_flags
= in_flags
;
6589 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
6590 && bfd_get_arch_info (obfd
)->the_default
)
6591 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
6592 bfd_get_mach (ibfd
));
6597 /* Identical flags must be compatible. */
6598 if (in_flags
== out_flags
)
6601 /* Check to see if the input BFD actually contains any sections. If
6602 not, its flags may not have been initialised either, but it
6603 cannot actually cause any incompatiblity. Do not short-circuit
6604 dynamic objects; their section list may be emptied by
6605 elf_link_add_object_symbols.
6607 Also check to see if there are no code sections in the input.
6608 In this case there is no need to check for code specific flags.
6609 XXX - do we need to worry about floating-point format compatability
6610 in data sections ? */
6611 if (!(ibfd
->flags
& DYNAMIC
))
6613 bfd_boolean null_input_bfd
= TRUE
;
6614 bfd_boolean only_data_sections
= TRUE
;
6616 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6618 if ((bfd_get_section_flags (ibfd
, sec
)
6619 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
6620 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
6621 only_data_sections
= FALSE
;
6623 null_input_bfd
= FALSE
;
6627 if (null_input_bfd
|| only_data_sections
)
6631 return flags_compatible
;
6634 /* Display the flags field. */
6637 elfNN_aarch64_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6639 FILE *file
= (FILE *) ptr
;
6640 unsigned long flags
;
6642 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
6644 /* Print normal ELF private data. */
6645 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6647 flags
= elf_elfheader (abfd
)->e_flags
;
6648 /* Ignore init flag - it may not be set, despite the flags field
6649 containing valid data. */
6651 /* xgettext:c-format */
6652 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
6655 fprintf (file
, _("<Unrecognised flag bits set>"));
6662 /* Update the got entry reference counts for the section being removed. */
6665 elfNN_aarch64_gc_sweep_hook (bfd
*abfd
,
6666 struct bfd_link_info
*info
,
6668 const Elf_Internal_Rela
* relocs
)
6670 struct elf_aarch64_link_hash_table
*htab
;
6671 Elf_Internal_Shdr
*symtab_hdr
;
6672 struct elf_link_hash_entry
**sym_hashes
;
6673 struct elf_aarch64_local_symbol
*locals
;
6674 const Elf_Internal_Rela
*rel
, *relend
;
6676 if (bfd_link_relocatable (info
))
6679 htab
= elf_aarch64_hash_table (info
);
6684 elf_section_data (sec
)->local_dynrel
= NULL
;
6686 symtab_hdr
= &elf_symtab_hdr (abfd
);
6687 sym_hashes
= elf_sym_hashes (abfd
);
6689 locals
= elf_aarch64_locals (abfd
);
6691 relend
= relocs
+ sec
->reloc_count
;
6692 for (rel
= relocs
; rel
< relend
; rel
++)
6694 unsigned long r_symndx
;
6695 unsigned int r_type
;
6696 struct elf_link_hash_entry
*h
= NULL
;
6698 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
6700 if (r_symndx
>= symtab_hdr
->sh_info
)
6703 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6704 while (h
->root
.type
== bfd_link_hash_indirect
6705 || h
->root
.type
== bfd_link_hash_warning
)
6706 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6710 Elf_Internal_Sym
*isym
;
6712 /* A local symbol. */
6713 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
6716 /* Check relocation against local STT_GNU_IFUNC symbol. */
6718 && ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
6720 h
= elfNN_aarch64_get_local_sym_hash (htab
, abfd
, rel
, FALSE
);
6728 struct elf_aarch64_link_hash_entry
*eh
;
6729 struct elf_dyn_relocs
**pp
;
6730 struct elf_dyn_relocs
*p
;
6732 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
6734 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6737 /* Everything must go for SEC. */
6743 r_type
= ELFNN_R_TYPE (rel
->r_info
);
6744 switch (aarch64_tls_transition (abfd
,info
, r_type
, h
,r_symndx
))
6746 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
6747 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
6748 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
6749 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
6750 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
6751 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
6752 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
6753 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
6754 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
6755 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
6756 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6757 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6758 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
6759 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC
:
6760 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6761 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6762 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6763 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6764 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6765 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6766 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6767 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6768 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6769 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
6770 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
6771 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6772 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6773 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6774 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6775 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6776 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6779 if (h
->got
.refcount
> 0)
6780 h
->got
.refcount
-= 1;
6782 if (h
->type
== STT_GNU_IFUNC
)
6784 if (h
->plt
.refcount
> 0)
6785 h
->plt
.refcount
-= 1;
6788 else if (locals
!= NULL
)
6790 if (locals
[r_symndx
].got_refcount
> 0)
6791 locals
[r_symndx
].got_refcount
-= 1;
6795 case BFD_RELOC_AARCH64_CALL26
:
6796 case BFD_RELOC_AARCH64_JUMP26
:
6797 /* If this is a local symbol then we resolve it
6798 directly without creating a PLT entry. */
6802 if (h
->plt
.refcount
> 0)
6803 h
->plt
.refcount
-= 1;
6806 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
6807 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
6808 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
6809 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
6810 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
6811 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
6812 case BFD_RELOC_AARCH64_MOVW_G3
:
6813 case BFD_RELOC_AARCH64_NN
:
6814 if (h
!= NULL
&& bfd_link_executable (info
))
6816 if (h
->plt
.refcount
> 0)
6817 h
->plt
.refcount
-= 1;
6829 /* Adjust a symbol defined by a dynamic object and referenced by a
6830 regular object. The current definition is in some section of the
6831 dynamic object, but we're not including those sections. We have to
6832 change the definition to something the rest of the link can
6836 elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6837 struct elf_link_hash_entry
*h
)
6839 struct elf_aarch64_link_hash_table
*htab
;
6842 /* If this is a function, put it in the procedure linkage table. We
6843 will fill in the contents of the procedure linkage table later,
6844 when we know the address of the .got section. */
6845 if (h
->type
== STT_FUNC
|| h
->type
== STT_GNU_IFUNC
|| h
->needs_plt
)
6847 if (h
->plt
.refcount
<= 0
6848 || (h
->type
!= STT_GNU_IFUNC
6849 && (SYMBOL_CALLS_LOCAL (info
, h
)
6850 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6851 && h
->root
.type
== bfd_link_hash_undefweak
))))
6853 /* This case can occur if we saw a CALL26 reloc in
6854 an input file, but the symbol wasn't referred to
6855 by a dynamic object or all references were
6856 garbage collected. In which case we can end up
6858 h
->plt
.offset
= (bfd_vma
) - 1;
6865 /* Otherwise, reset to -1. */
6866 h
->plt
.offset
= (bfd_vma
) - 1;
6869 /* If this is a weak symbol, and there is a real definition, the
6870 processor independent code will have arranged for us to see the
6871 real definition first, and we can just use the same value. */
6872 if (h
->u
.weakdef
!= NULL
)
6874 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6875 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6876 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6877 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6878 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
6879 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6883 /* If we are creating a shared library, we must presume that the
6884 only references to the symbol are via the global offset table.
6885 For such cases we need not do anything here; the relocations will
6886 be handled correctly by relocate_section. */
6887 if (bfd_link_pic (info
))
6890 /* If there are no references to this symbol that do not use the
6891 GOT, we don't need to generate a copy reloc. */
6892 if (!h
->non_got_ref
)
6895 /* If -z nocopyreloc was given, we won't generate them either. */
6896 if (info
->nocopyreloc
)
6902 /* We must allocate the symbol in our .dynbss section, which will
6903 become part of the .bss section of the executable. There will be
6904 an entry for this symbol in the .dynsym section. The dynamic
6905 object will contain position independent code, so all references
6906 from the dynamic object to this symbol will go through the global
6907 offset table. The dynamic linker will use the .dynsym entry to
6908 determine the address it must put in the global offset table, so
6909 both the dynamic object and the regular object will refer to the
6910 same memory location for the variable. */
6912 htab
= elf_aarch64_hash_table (info
);
6914 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
6915 to copy the initial value out of the dynamic object and into the
6916 runtime process image. */
6917 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
6919 htab
->srelbss
->size
+= RELOC_SIZE (htab
);
6925 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
6930 elfNN_aarch64_allocate_local_symbols (bfd
*abfd
, unsigned number
)
6932 struct elf_aarch64_local_symbol
*locals
;
6933 locals
= elf_aarch64_locals (abfd
);
6936 locals
= (struct elf_aarch64_local_symbol
*)
6937 bfd_zalloc (abfd
, number
* sizeof (struct elf_aarch64_local_symbol
));
6940 elf_aarch64_locals (abfd
) = locals
;
6945 /* Create the .got section to hold the global offset table. */
6948 aarch64_elf_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
6950 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
6953 struct elf_link_hash_entry
*h
;
6954 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
6956 /* This function may be called more than once. */
6957 if (htab
->sgot
!= NULL
)
6960 flags
= bed
->dynamic_sec_flags
;
6962 s
= bfd_make_section_anyway_with_flags (abfd
,
6963 (bed
->rela_plts_and_copies_p
6964 ? ".rela.got" : ".rel.got"),
6965 (bed
->dynamic_sec_flags
6968 || ! bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
6972 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
6974 || !bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
6977 htab
->sgot
->size
+= GOT_ENTRY_SIZE
;
6979 if (bed
->want_got_sym
)
6981 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
6982 (or .got.plt) section. We don't do this in the linker script
6983 because we don't want to define the symbol if we are not creating
6984 a global offset table. */
6985 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
,
6986 "_GLOBAL_OFFSET_TABLE_");
6987 elf_hash_table (info
)->hgot
= h
;
6992 if (bed
->want_got_plt
)
6994 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
6996 || !bfd_set_section_alignment (abfd
, s
,
6997 bed
->s
->log_file_align
))
7002 /* The first bit of the global offset table is the header. */
7003 s
->size
+= bed
->got_header_size
;
7008 /* Look through the relocs for a section during the first phase. */
7011 elfNN_aarch64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
7012 asection
*sec
, const Elf_Internal_Rela
*relocs
)
7014 Elf_Internal_Shdr
*symtab_hdr
;
7015 struct elf_link_hash_entry
**sym_hashes
;
7016 const Elf_Internal_Rela
*rel
;
7017 const Elf_Internal_Rela
*rel_end
;
7020 struct elf_aarch64_link_hash_table
*htab
;
7022 if (bfd_link_relocatable (info
))
7025 BFD_ASSERT (is_aarch64_elf (abfd
));
7027 htab
= elf_aarch64_hash_table (info
);
7030 symtab_hdr
= &elf_symtab_hdr (abfd
);
7031 sym_hashes
= elf_sym_hashes (abfd
);
7033 rel_end
= relocs
+ sec
->reloc_count
;
7034 for (rel
= relocs
; rel
< rel_end
; rel
++)
7036 struct elf_link_hash_entry
*h
;
7037 unsigned long r_symndx
;
7038 unsigned int r_type
;
7039 bfd_reloc_code_real_type bfd_r_type
;
7040 Elf_Internal_Sym
*isym
;
7042 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
7043 r_type
= ELFNN_R_TYPE (rel
->r_info
);
7045 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7047 /* xgettext:c-format */
7048 _bfd_error_handler (_("%B: bad symbol index: %d"), abfd
, r_symndx
);
7052 if (r_symndx
< symtab_hdr
->sh_info
)
7054 /* A local symbol. */
7055 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
7060 /* Check relocation against local STT_GNU_IFUNC symbol. */
7061 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
7063 h
= elfNN_aarch64_get_local_sym_hash (htab
, abfd
, rel
,
7068 /* Fake a STT_GNU_IFUNC symbol. */
7069 h
->type
= STT_GNU_IFUNC
;
7072 h
->forced_local
= 1;
7073 h
->root
.type
= bfd_link_hash_defined
;
7080 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7081 while (h
->root
.type
== bfd_link_hash_indirect
7082 || h
->root
.type
== bfd_link_hash_warning
)
7083 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7085 /* PR15323, ref flags aren't set for references in the same
7087 h
->root
.non_ir_ref
= 1;
7090 /* Could be done earlier, if h were already available. */
7091 bfd_r_type
= aarch64_tls_transition (abfd
, info
, r_type
, h
, r_symndx
);
7095 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7096 This shows up in particular in an R_AARCH64_PREL64 in large model
7097 when calculating the pc-relative address to .got section which is
7098 used to initialize the gp register. */
7099 if (h
->root
.root
.string
7100 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
7102 if (htab
->root
.dynobj
== NULL
)
7103 htab
->root
.dynobj
= abfd
;
7105 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
7108 BFD_ASSERT (h
== htab
->root
.hgot
);
7111 /* Create the ifunc sections for static executables. If we
7112 never see an indirect function symbol nor we are building
7113 a static executable, those sections will be empty and
7114 won't appear in output. */
7120 case BFD_RELOC_AARCH64_ADD_LO12
:
7121 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7122 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7123 case BFD_RELOC_AARCH64_CALL26
:
7124 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7125 case BFD_RELOC_AARCH64_JUMP26
:
7126 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7127 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7128 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7129 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7130 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7131 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7132 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7133 case BFD_RELOC_AARCH64_NN
:
7134 if (htab
->root
.dynobj
== NULL
)
7135 htab
->root
.dynobj
= abfd
;
7136 if (!_bfd_elf_create_ifunc_sections (htab
->root
.dynobj
, info
))
7141 /* It is referenced by a non-shared object. */
7143 h
->root
.non_ir_ref
= 1;
7148 case BFD_RELOC_AARCH64_NN
:
7150 /* We don't need to handle relocs into sections not going into
7151 the "real" output. */
7152 if ((sec
->flags
& SEC_ALLOC
) == 0)
7157 if (!bfd_link_pic (info
))
7160 h
->plt
.refcount
+= 1;
7161 h
->pointer_equality_needed
= 1;
7164 /* No need to do anything if we're not creating a shared
7166 if (! bfd_link_pic (info
))
7170 struct elf_dyn_relocs
*p
;
7171 struct elf_dyn_relocs
**head
;
7173 /* We must copy these reloc types into the output file.
7174 Create a reloc section in dynobj and make room for
7178 if (htab
->root
.dynobj
== NULL
)
7179 htab
->root
.dynobj
= abfd
;
7181 sreloc
= _bfd_elf_make_dynamic_reloc_section
7182 (sec
, htab
->root
.dynobj
, LOG_FILE_ALIGN
, abfd
, /*rela? */ TRUE
);
7188 /* If this is a global symbol, we count the number of
7189 relocations we need for this symbol. */
7192 struct elf_aarch64_link_hash_entry
*eh
;
7193 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
7194 head
= &eh
->dyn_relocs
;
7198 /* Track dynamic relocs needed for local syms too.
7199 We really need local syms available to do this
7205 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
7210 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
7214 /* Beware of type punned pointers vs strict aliasing
7216 vpp
= &(elf_section_data (s
)->local_dynrel
);
7217 head
= (struct elf_dyn_relocs
**) vpp
;
7221 if (p
== NULL
|| p
->sec
!= sec
)
7223 bfd_size_type amt
= sizeof *p
;
7224 p
= ((struct elf_dyn_relocs
*)
7225 bfd_zalloc (htab
->root
.dynobj
, amt
));
7238 /* RR: We probably want to keep a consistency check that
7239 there are no dangling GOT_PAGE relocs. */
7240 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7241 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7242 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7243 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7244 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7245 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7246 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7247 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7248 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7249 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
7250 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7251 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7252 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
7253 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC
:
7254 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7255 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7256 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7257 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
7258 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
7259 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
7260 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
7261 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
7262 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
7263 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
7264 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
7265 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
7266 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
7267 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
7268 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
7269 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
7270 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
7271 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
:
7272 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
:
7273 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
:
7276 unsigned old_got_type
;
7278 got_type
= aarch64_reloc_got_type (bfd_r_type
);
7282 h
->got
.refcount
+= 1;
7283 old_got_type
= elf_aarch64_hash_entry (h
)->got_type
;
7287 struct elf_aarch64_local_symbol
*locals
;
7289 if (!elfNN_aarch64_allocate_local_symbols
7290 (abfd
, symtab_hdr
->sh_info
))
7293 locals
= elf_aarch64_locals (abfd
);
7294 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7295 locals
[r_symndx
].got_refcount
+= 1;
7296 old_got_type
= locals
[r_symndx
].got_type
;
7299 /* If a variable is accessed with both general dynamic TLS
7300 methods, two slots may be created. */
7301 if (GOT_TLS_GD_ANY_P (old_got_type
) && GOT_TLS_GD_ANY_P (got_type
))
7302 got_type
|= old_got_type
;
7304 /* We will already have issued an error message if there
7305 is a TLS/non-TLS mismatch, based on the symbol type.
7306 So just combine any TLS types needed. */
7307 if (old_got_type
!= GOT_UNKNOWN
&& old_got_type
!= GOT_NORMAL
7308 && got_type
!= GOT_NORMAL
)
7309 got_type
|= old_got_type
;
7311 /* If the symbol is accessed by both IE and GD methods, we
7312 are able to relax. Turn off the GD flag, without
7313 messing up with any other kind of TLS types that may be
7315 if ((got_type
& GOT_TLS_IE
) && GOT_TLS_GD_ANY_P (got_type
))
7316 got_type
&= ~ (GOT_TLSDESC_GD
| GOT_TLS_GD
);
7318 if (old_got_type
!= got_type
)
7321 elf_aarch64_hash_entry (h
)->got_type
= got_type
;
7324 struct elf_aarch64_local_symbol
*locals
;
7325 locals
= elf_aarch64_locals (abfd
);
7326 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7327 locals
[r_symndx
].got_type
= got_type
;
7331 if (htab
->root
.dynobj
== NULL
)
7332 htab
->root
.dynobj
= abfd
;
7333 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
7338 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
7339 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
7340 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
7341 case BFD_RELOC_AARCH64_MOVW_G3
:
7342 if (bfd_link_pic (info
))
7344 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7346 /* xgettext:c-format */
7347 (_("%B: relocation %s against `%s' can not be used when making "
7348 "a shared object; recompile with -fPIC"),
7349 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7350 (h
) ? h
->root
.root
.string
: "a local symbol");
7351 bfd_set_error (bfd_error_bad_value
);
7356 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
7357 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7358 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
7359 if (h
!= NULL
&& bfd_link_executable (info
))
7361 /* If this reloc is in a read-only section, we might
7362 need a copy reloc. We can't check reliably at this
7363 stage whether the section is read-only, as input
7364 sections have not yet been mapped to output sections.
7365 Tentatively set the flag for now, and correct in
7366 adjust_dynamic_symbol. */
7368 h
->plt
.refcount
+= 1;
7369 h
->pointer_equality_needed
= 1;
7371 /* FIXME:: RR need to handle these in shared libraries
7372 and essentially bomb out as these being non-PIC
7373 relocations in shared libraries. */
7376 case BFD_RELOC_AARCH64_CALL26
:
7377 case BFD_RELOC_AARCH64_JUMP26
:
7378 /* If this is a local symbol then we resolve it
7379 directly without creating a PLT entry. */
7384 if (h
->plt
.refcount
<= 0)
7385 h
->plt
.refcount
= 1;
7387 h
->plt
.refcount
+= 1;
7398 /* Treat mapping symbols as special target symbols. */
7401 elfNN_aarch64_is_target_special_symbol (bfd
*abfd ATTRIBUTE_UNUSED
,
7404 return bfd_is_aarch64_special_symbol_name (sym
->name
,
7405 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
);
7408 /* This is a copy of elf_find_function () from elf.c except that
7409 AArch64 mapping symbols are ignored when looking for function names. */
7412 aarch64_elf_find_function (bfd
*abfd ATTRIBUTE_UNUSED
,
7416 const char **filename_ptr
,
7417 const char **functionname_ptr
)
7419 const char *filename
= NULL
;
7420 asymbol
*func
= NULL
;
7421 bfd_vma low_func
= 0;
7424 for (p
= symbols
; *p
!= NULL
; p
++)
7428 q
= (elf_symbol_type
*) * p
;
7430 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
7435 filename
= bfd_asymbol_name (&q
->symbol
);
7439 /* Skip mapping symbols. */
7440 if ((q
->symbol
.flags
& BSF_LOCAL
)
7441 && (bfd_is_aarch64_special_symbol_name
7442 (q
->symbol
.name
, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
)))
7445 if (bfd_get_section (&q
->symbol
) == section
7446 && q
->symbol
.value
>= low_func
&& q
->symbol
.value
<= offset
)
7448 func
= (asymbol
*) q
;
7449 low_func
= q
->symbol
.value
;
7459 *filename_ptr
= filename
;
7460 if (functionname_ptr
)
7461 *functionname_ptr
= bfd_asymbol_name (func
);
7467 /* Find the nearest line to a particular section and offset, for error
7468 reporting. This code is a duplicate of the code in elf.c, except
7469 that it uses aarch64_elf_find_function. */
7472 elfNN_aarch64_find_nearest_line (bfd
*abfd
,
7476 const char **filename_ptr
,
7477 const char **functionname_ptr
,
7478 unsigned int *line_ptr
,
7479 unsigned int *discriminator_ptr
)
7481 bfd_boolean found
= FALSE
;
7483 if (_bfd_dwarf2_find_nearest_line (abfd
, symbols
, NULL
, section
, offset
,
7484 filename_ptr
, functionname_ptr
,
7485 line_ptr
, discriminator_ptr
,
7486 dwarf_debug_sections
, 0,
7487 &elf_tdata (abfd
)->dwarf2_find_line_info
))
7489 if (!*functionname_ptr
)
7490 aarch64_elf_find_function (abfd
, symbols
, section
, offset
,
7491 *filename_ptr
? NULL
: filename_ptr
,
7497 /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64
7498 toolchain uses DWARF1. */
7500 if (!_bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
7501 &found
, filename_ptr
,
7502 functionname_ptr
, line_ptr
,
7503 &elf_tdata (abfd
)->line_info
))
7506 if (found
&& (*functionname_ptr
|| *line_ptr
))
7509 if (symbols
== NULL
)
7512 if (!aarch64_elf_find_function (abfd
, symbols
, section
, offset
,
7513 filename_ptr
, functionname_ptr
))
7521 elfNN_aarch64_find_inliner_info (bfd
*abfd
,
7522 const char **filename_ptr
,
7523 const char **functionname_ptr
,
7524 unsigned int *line_ptr
)
7527 found
= _bfd_dwarf2_find_inliner_info
7528 (abfd
, filename_ptr
,
7529 functionname_ptr
, line_ptr
, &elf_tdata (abfd
)->dwarf2_find_line_info
);
7535 elfNN_aarch64_post_process_headers (bfd
*abfd
,
7536 struct bfd_link_info
*link_info
)
7538 Elf_Internal_Ehdr
*i_ehdrp
; /* ELF file header, internal form. */
7540 i_ehdrp
= elf_elfheader (abfd
);
7541 i_ehdrp
->e_ident
[EI_ABIVERSION
] = AARCH64_ELF_ABI_VERSION
;
7543 _bfd_elf_post_process_headers (abfd
, link_info
);
7546 static enum elf_reloc_type_class
7547 elfNN_aarch64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
7548 const asection
*rel_sec ATTRIBUTE_UNUSED
,
7549 const Elf_Internal_Rela
*rela
)
7551 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
7553 case AARCH64_R (RELATIVE
):
7554 return reloc_class_relative
;
7555 case AARCH64_R (JUMP_SLOT
):
7556 return reloc_class_plt
;
7557 case AARCH64_R (COPY
):
7558 return reloc_class_copy
;
7560 return reloc_class_normal
;
7564 /* Handle an AArch64 specific section when reading an object file. This is
7565 called when bfd_section_from_shdr finds a section with an unknown
7569 elfNN_aarch64_section_from_shdr (bfd
*abfd
,
7570 Elf_Internal_Shdr
*hdr
,
7571 const char *name
, int shindex
)
7573 /* There ought to be a place to keep ELF backend specific flags, but
7574 at the moment there isn't one. We just keep track of the
7575 sections by their name, instead. Fortunately, the ABI gives
7576 names for all the AArch64 specific sections, so we will probably get
7578 switch (hdr
->sh_type
)
7580 case SHT_AARCH64_ATTRIBUTES
:
7587 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
7593 /* A structure used to record a list of sections, independently
7594 of the next and prev fields in the asection structure. */
7595 typedef struct section_list
7598 struct section_list
*next
;
7599 struct section_list
*prev
;
7603 /* Unfortunately we need to keep a list of sections for which
7604 an _aarch64_elf_section_data structure has been allocated. This
7605 is because it is possible for functions like elfNN_aarch64_write_section
7606 to be called on a section which has had an elf_data_structure
7607 allocated for it (and so the used_by_bfd field is valid) but
7608 for which the AArch64 extended version of this structure - the
7609 _aarch64_elf_section_data structure - has not been allocated. */
7610 static section_list
*sections_with_aarch64_elf_section_data
= NULL
;
7613 record_section_with_aarch64_elf_section_data (asection
*sec
)
7615 struct section_list
*entry
;
7617 entry
= bfd_malloc (sizeof (*entry
));
7621 entry
->next
= sections_with_aarch64_elf_section_data
;
7623 if (entry
->next
!= NULL
)
7624 entry
->next
->prev
= entry
;
7625 sections_with_aarch64_elf_section_data
= entry
;
7628 static struct section_list
*
7629 find_aarch64_elf_section_entry (asection
*sec
)
7631 struct section_list
*entry
;
7632 static struct section_list
*last_entry
= NULL
;
7634 /* This is a short cut for the typical case where the sections are added
7635 to the sections_with_aarch64_elf_section_data list in forward order and
7636 then looked up here in backwards order. This makes a real difference
7637 to the ld-srec/sec64k.exp linker test. */
7638 entry
= sections_with_aarch64_elf_section_data
;
7639 if (last_entry
!= NULL
)
7641 if (last_entry
->sec
== sec
)
7643 else if (last_entry
->next
!= NULL
&& last_entry
->next
->sec
== sec
)
7644 entry
= last_entry
->next
;
7647 for (; entry
; entry
= entry
->next
)
7648 if (entry
->sec
== sec
)
7652 /* Record the entry prior to this one - it is the entry we are
7653 most likely to want to locate next time. Also this way if we
7654 have been called from
7655 unrecord_section_with_aarch64_elf_section_data () we will not
7656 be caching a pointer that is about to be freed. */
7657 last_entry
= entry
->prev
;
7663 unrecord_section_with_aarch64_elf_section_data (asection
*sec
)
7665 struct section_list
*entry
;
7667 entry
= find_aarch64_elf_section_entry (sec
);
7671 if (entry
->prev
!= NULL
)
7672 entry
->prev
->next
= entry
->next
;
7673 if (entry
->next
!= NULL
)
7674 entry
->next
->prev
= entry
->prev
;
7675 if (entry
== sections_with_aarch64_elf_section_data
)
7676 sections_with_aarch64_elf_section_data
= entry
->next
;
7685 struct bfd_link_info
*info
;
7688 int (*func
) (void *, const char *, Elf_Internal_Sym
*,
7689 asection
*, struct elf_link_hash_entry
*);
7690 } output_arch_syminfo
;
7692 enum map_symbol_type
7699 /* Output a single mapping symbol. */
7702 elfNN_aarch64_output_map_sym (output_arch_syminfo
*osi
,
7703 enum map_symbol_type type
, bfd_vma offset
)
7705 static const char *names
[2] = { "$x", "$d" };
7706 Elf_Internal_Sym sym
;
7708 sym
.st_value
= (osi
->sec
->output_section
->vma
7709 + osi
->sec
->output_offset
+ offset
);
7712 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
7713 sym
.st_shndx
= osi
->sec_shndx
;
7714 return osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
) == 1;
7717 /* Output a single local symbol for a generated stub. */
7720 elfNN_aarch64_output_stub_sym (output_arch_syminfo
*osi
, const char *name
,
7721 bfd_vma offset
, bfd_vma size
)
7723 Elf_Internal_Sym sym
;
7725 sym
.st_value
= (osi
->sec
->output_section
->vma
7726 + osi
->sec
->output_offset
+ offset
);
7729 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
7730 sym
.st_shndx
= osi
->sec_shndx
;
7731 return osi
->func (osi
->finfo
, name
, &sym
, osi
->sec
, NULL
) == 1;
7735 aarch64_map_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
7737 struct elf_aarch64_stub_hash_entry
*stub_entry
;
7741 output_arch_syminfo
*osi
;
7743 /* Massage our args to the form they really have. */
7744 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
7745 osi
= (output_arch_syminfo
*) in_arg
;
7747 stub_sec
= stub_entry
->stub_sec
;
7749 /* Ensure this stub is attached to the current section being
7751 if (stub_sec
!= osi
->sec
)
7754 addr
= (bfd_vma
) stub_entry
->stub_offset
;
7756 stub_name
= stub_entry
->output_name
;
7758 switch (stub_entry
->stub_type
)
7760 case aarch64_stub_adrp_branch
:
7761 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
7762 sizeof (aarch64_adrp_branch_stub
)))
7764 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
7767 case aarch64_stub_long_branch
:
7768 if (!elfNN_aarch64_output_stub_sym
7769 (osi
, stub_name
, addr
, sizeof (aarch64_long_branch_stub
)))
7771 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
7773 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_DATA
, addr
+ 16))
7776 case aarch64_stub_erratum_835769_veneer
:
7777 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
7778 sizeof (aarch64_erratum_835769_stub
)))
7780 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
7783 case aarch64_stub_erratum_843419_veneer
:
7784 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
7785 sizeof (aarch64_erratum_843419_stub
)))
7787 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
7798 /* Output mapping symbols for linker generated sections. */
7801 elfNN_aarch64_output_arch_local_syms (bfd
*output_bfd
,
7802 struct bfd_link_info
*info
,
7804 int (*func
) (void *, const char *,
7807 struct elf_link_hash_entry
7810 output_arch_syminfo osi
;
7811 struct elf_aarch64_link_hash_table
*htab
;
7813 htab
= elf_aarch64_hash_table (info
);
7819 /* Long calls stubs. */
7820 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
)
7824 for (stub_sec
= htab
->stub_bfd
->sections
;
7825 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
7827 /* Ignore non-stub sections. */
7828 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
7833 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
7834 (output_bfd
, osi
.sec
->output_section
);
7836 /* The first instruction in a stub is always a branch. */
7837 if (!elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0))
7840 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_map_one_stub
,
7845 /* Finally, output mapping symbols for the PLT. */
7846 if (!htab
->root
.splt
|| htab
->root
.splt
->size
== 0)
7849 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
7850 (output_bfd
, htab
->root
.splt
->output_section
);
7851 osi
.sec
= htab
->root
.splt
;
7853 elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0);
7859 /* Allocate target specific section data. */
7862 elfNN_aarch64_new_section_hook (bfd
*abfd
, asection
*sec
)
7864 if (!sec
->used_by_bfd
)
7866 _aarch64_elf_section_data
*sdata
;
7867 bfd_size_type amt
= sizeof (*sdata
);
7869 sdata
= bfd_zalloc (abfd
, amt
);
7872 sec
->used_by_bfd
= sdata
;
7875 record_section_with_aarch64_elf_section_data (sec
);
7877 return _bfd_elf_new_section_hook (abfd
, sec
);
7882 unrecord_section_via_map_over_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
7884 void *ignore ATTRIBUTE_UNUSED
)
7886 unrecord_section_with_aarch64_elf_section_data (sec
);
7890 elfNN_aarch64_close_and_cleanup (bfd
*abfd
)
7893 bfd_map_over_sections (abfd
,
7894 unrecord_section_via_map_over_sections
, NULL
);
7896 return _bfd_elf_close_and_cleanup (abfd
);
7900 elfNN_aarch64_bfd_free_cached_info (bfd
*abfd
)
7903 bfd_map_over_sections (abfd
,
7904 unrecord_section_via_map_over_sections
, NULL
);
7906 return _bfd_free_cached_info (abfd
);
7909 /* Create dynamic sections. This is different from the ARM backend in that
7910 the got, plt, gotplt and their relocation sections are all created in the
7911 standard part of the bfd elf backend. */
7914 elfNN_aarch64_create_dynamic_sections (bfd
*dynobj
,
7915 struct bfd_link_info
*info
)
7917 struct elf_aarch64_link_hash_table
*htab
;
7919 /* We need to create .got section. */
7920 if (!aarch64_elf_create_got_section (dynobj
, info
))
7923 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
7926 htab
= elf_aarch64_hash_table (info
);
7927 htab
->sdynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
7928 if (!bfd_link_pic (info
))
7929 htab
->srelbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
7931 if (!htab
->sdynbss
|| (!bfd_link_pic (info
) && !htab
->srelbss
))
7938 /* Allocate space in .plt, .got and associated reloc sections for
7942 elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7944 struct bfd_link_info
*info
;
7945 struct elf_aarch64_link_hash_table
*htab
;
7946 struct elf_aarch64_link_hash_entry
*eh
;
7947 struct elf_dyn_relocs
*p
;
7949 /* An example of a bfd_link_hash_indirect symbol is versioned
7950 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
7951 -> __gxx_personality_v0(bfd_link_hash_defined)
7953 There is no need to process bfd_link_hash_indirect symbols here
7954 because we will also be presented with the concrete instance of
7955 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
7956 called to copy all relevant data from the generic to the concrete
7959 if (h
->root
.type
== bfd_link_hash_indirect
)
7962 if (h
->root
.type
== bfd_link_hash_warning
)
7963 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7965 info
= (struct bfd_link_info
*) inf
;
7966 htab
= elf_aarch64_hash_table (info
);
7968 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
7969 here if it is defined and referenced in a non-shared object. */
7970 if (h
->type
== STT_GNU_IFUNC
7973 else if (htab
->root
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
7975 /* Make sure this symbol is output as a dynamic symbol.
7976 Undefined weak syms won't yet be marked as dynamic. */
7977 if (h
->dynindx
== -1 && !h
->forced_local
)
7979 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
7983 if (bfd_link_pic (info
) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
7985 asection
*s
= htab
->root
.splt
;
7987 /* If this is the first .plt entry, make room for the special
7990 s
->size
+= htab
->plt_header_size
;
7992 h
->plt
.offset
= s
->size
;
7994 /* If this symbol is not defined in a regular file, and we are
7995 not generating a shared library, then set the symbol to this
7996 location in the .plt. This is required to make function
7997 pointers compare as equal between the normal executable and
7998 the shared library. */
7999 if (!bfd_link_pic (info
) && !h
->def_regular
)
8001 h
->root
.u
.def
.section
= s
;
8002 h
->root
.u
.def
.value
= h
->plt
.offset
;
8005 /* Make room for this entry. For now we only create the
8006 small model PLT entries. We later need to find a way
8007 of relaxing into these from the large model PLT entries. */
8008 s
->size
+= PLT_SMALL_ENTRY_SIZE
;
8010 /* We also need to make an entry in the .got.plt section, which
8011 will be placed in the .got section by the linker script. */
8012 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
;
8014 /* We also need to make an entry in the .rela.plt section. */
8015 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8017 /* We need to ensure that all GOT entries that serve the PLT
8018 are consecutive with the special GOT slots [0] [1] and
8019 [2]. Any addtional relocations, such as
8020 R_AARCH64_TLSDESC, must be placed after the PLT related
8021 entries. We abuse the reloc_count such that during
8022 sizing we adjust reloc_count to indicate the number of
8023 PLT related reserved entries. In subsequent phases when
8024 filling in the contents of the reloc entries, PLT related
8025 entries are placed by computing their PLT index (0
8026 .. reloc_count). While other none PLT relocs are placed
8027 at the slot indicated by reloc_count and reloc_count is
8030 htab
->root
.srelplt
->reloc_count
++;
8034 h
->plt
.offset
= (bfd_vma
) - 1;
8040 h
->plt
.offset
= (bfd_vma
) - 1;
8044 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8045 eh
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8047 if (h
->got
.refcount
> 0)
8050 unsigned got_type
= elf_aarch64_hash_entry (h
)->got_type
;
8052 h
->got
.offset
= (bfd_vma
) - 1;
8054 dyn
= htab
->root
.dynamic_sections_created
;
8056 /* Make sure this symbol is output as a dynamic symbol.
8057 Undefined weak syms won't yet be marked as dynamic. */
8058 if (dyn
&& h
->dynindx
== -1 && !h
->forced_local
)
8060 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
8064 if (got_type
== GOT_UNKNOWN
)
8067 else if (got_type
== GOT_NORMAL
)
8069 h
->got
.offset
= htab
->root
.sgot
->size
;
8070 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8071 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8072 || h
->root
.type
!= bfd_link_hash_undefweak
)
8073 && (bfd_link_pic (info
)
8074 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8076 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8082 if (got_type
& GOT_TLSDESC_GD
)
8084 eh
->tlsdesc_got_jump_table_offset
=
8085 (htab
->root
.sgotplt
->size
8086 - aarch64_compute_jump_table_size (htab
));
8087 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8088 h
->got
.offset
= (bfd_vma
) - 2;
8091 if (got_type
& GOT_TLS_GD
)
8093 h
->got
.offset
= htab
->root
.sgot
->size
;
8094 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8097 if (got_type
& GOT_TLS_IE
)
8099 h
->got
.offset
= htab
->root
.sgot
->size
;
8100 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8103 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
8104 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8105 || h
->root
.type
!= bfd_link_hash_undefweak
)
8106 && (bfd_link_pic (info
)
8108 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8110 if (got_type
& GOT_TLSDESC_GD
)
8112 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8113 /* Note reloc_count not incremented here! We have
8114 already adjusted reloc_count for this relocation
8117 /* TLSDESC PLT is now needed, but not yet determined. */
8118 htab
->tlsdesc_plt
= (bfd_vma
) - 1;
8121 if (got_type
& GOT_TLS_GD
)
8122 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
8124 if (got_type
& GOT_TLS_IE
)
8125 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8131 h
->got
.offset
= (bfd_vma
) - 1;
8134 if (eh
->dyn_relocs
== NULL
)
8137 /* In the shared -Bsymbolic case, discard space allocated for
8138 dynamic pc-relative relocs against symbols which turn out to be
8139 defined in regular objects. For the normal shared case, discard
8140 space for pc-relative relocs that have become local due to symbol
8141 visibility changes. */
8143 if (bfd_link_pic (info
))
8145 /* Relocs that use pc_count are those that appear on a call
8146 insn, or certain REL relocs that can generated via assembly.
8147 We want calls to protected symbols to resolve directly to the
8148 function rather than going via the plt. If people want
8149 function pointer comparisons to work as expected then they
8150 should avoid writing weird assembly. */
8151 if (SYMBOL_CALLS_LOCAL (info
, h
))
8153 struct elf_dyn_relocs
**pp
;
8155 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
8157 p
->count
-= p
->pc_count
;
8166 /* Also discard relocs on undefined weak syms with non-default
8168 if (eh
->dyn_relocs
!= NULL
&& h
->root
.type
== bfd_link_hash_undefweak
)
8170 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8171 eh
->dyn_relocs
= NULL
;
8173 /* Make sure undefined weak symbols are output as a dynamic
8175 else if (h
->dynindx
== -1
8177 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8182 else if (ELIMINATE_COPY_RELOCS
)
8184 /* For the non-shared case, discard space for relocs against
8185 symbols which turn out to need copy relocs or are not
8191 || (htab
->root
.dynamic_sections_created
8192 && (h
->root
.type
== bfd_link_hash_undefweak
8193 || h
->root
.type
== bfd_link_hash_undefined
))))
8195 /* Make sure this symbol is output as a dynamic symbol.
8196 Undefined weak syms won't yet be marked as dynamic. */
8197 if (h
->dynindx
== -1
8199 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8202 /* If that succeeded, we know we'll be keeping all the
8204 if (h
->dynindx
!= -1)
8208 eh
->dyn_relocs
= NULL
;
8213 /* Finally, allocate space. */
8214 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8218 sreloc
= elf_section_data (p
->sec
)->sreloc
;
8220 BFD_ASSERT (sreloc
!= NULL
);
8222 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
8228 /* Allocate space in .plt, .got and associated reloc sections for
8229 ifunc dynamic relocs. */
8232 elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry
*h
,
8235 struct bfd_link_info
*info
;
8236 struct elf_aarch64_link_hash_table
*htab
;
8237 struct elf_aarch64_link_hash_entry
*eh
;
8239 /* An example of a bfd_link_hash_indirect symbol is versioned
8240 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8241 -> __gxx_personality_v0(bfd_link_hash_defined)
8243 There is no need to process bfd_link_hash_indirect symbols here
8244 because we will also be presented with the concrete instance of
8245 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8246 called to copy all relevant data from the generic to the concrete
8249 if (h
->root
.type
== bfd_link_hash_indirect
)
8252 if (h
->root
.type
== bfd_link_hash_warning
)
8253 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8255 info
= (struct bfd_link_info
*) inf
;
8256 htab
= elf_aarch64_hash_table (info
);
8258 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8260 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8261 here if it is defined and referenced in a non-shared object. */
8262 if (h
->type
== STT_GNU_IFUNC
8264 return _bfd_elf_allocate_ifunc_dyn_relocs (info
, h
,
8267 htab
->plt_entry_size
,
8268 htab
->plt_header_size
,
8274 /* Allocate space in .plt, .got and associated reloc sections for
8275 local dynamic relocs. */
8278 elfNN_aarch64_allocate_local_dynrelocs (void **slot
, void *inf
)
8280 struct elf_link_hash_entry
*h
8281 = (struct elf_link_hash_entry
*) *slot
;
8283 if (h
->type
!= STT_GNU_IFUNC
8287 || h
->root
.type
!= bfd_link_hash_defined
)
8290 return elfNN_aarch64_allocate_dynrelocs (h
, inf
);
8293 /* Allocate space in .plt, .got and associated reloc sections for
8294 local ifunc dynamic relocs. */
8297 elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot
, void *inf
)
8299 struct elf_link_hash_entry
*h
8300 = (struct elf_link_hash_entry
*) *slot
;
8302 if (h
->type
!= STT_GNU_IFUNC
8306 || h
->root
.type
!= bfd_link_hash_defined
)
8309 return elfNN_aarch64_allocate_ifunc_dynrelocs (h
, inf
);
8312 /* Find any dynamic relocs that apply to read-only sections. */
8315 aarch64_readonly_dynrelocs (struct elf_link_hash_entry
* h
, void * inf
)
8317 struct elf_aarch64_link_hash_entry
* eh
;
8318 struct elf_dyn_relocs
* p
;
8320 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8321 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8323 asection
*s
= p
->sec
;
8325 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8327 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
8329 info
->flags
|= DF_TEXTREL
;
8331 /* Not an error, just cut short the traversal. */
8338 /* This is the most important function of all . Innocuosly named
8341 elfNN_aarch64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8342 struct bfd_link_info
*info
)
8344 struct elf_aarch64_link_hash_table
*htab
;
8350 htab
= elf_aarch64_hash_table ((info
));
8351 dynobj
= htab
->root
.dynobj
;
8353 BFD_ASSERT (dynobj
!= NULL
);
8355 if (htab
->root
.dynamic_sections_created
)
8357 if (bfd_link_executable (info
) && !info
->nointerp
)
8359 s
= bfd_get_linker_section (dynobj
, ".interp");
8362 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8363 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8367 /* Set up .got offsets for local syms, and space for local dynamic
8369 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8371 struct elf_aarch64_local_symbol
*locals
= NULL
;
8372 Elf_Internal_Shdr
*symtab_hdr
;
8376 if (!is_aarch64_elf (ibfd
))
8379 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8381 struct elf_dyn_relocs
*p
;
8383 for (p
= (struct elf_dyn_relocs
*)
8384 (elf_section_data (s
)->local_dynrel
); p
!= NULL
; p
= p
->next
)
8386 if (!bfd_is_abs_section (p
->sec
)
8387 && bfd_is_abs_section (p
->sec
->output_section
))
8389 /* Input section has been discarded, either because
8390 it is a copy of a linkonce section or due to
8391 linker script /DISCARD/, so we'll be discarding
8394 else if (p
->count
!= 0)
8396 srel
= elf_section_data (p
->sec
)->sreloc
;
8397 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
8398 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8399 info
->flags
|= DF_TEXTREL
;
8404 locals
= elf_aarch64_locals (ibfd
);
8408 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8409 srel
= htab
->root
.srelgot
;
8410 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
8412 locals
[i
].got_offset
= (bfd_vma
) - 1;
8413 locals
[i
].tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8414 if (locals
[i
].got_refcount
> 0)
8416 unsigned got_type
= locals
[i
].got_type
;
8417 if (got_type
& GOT_TLSDESC_GD
)
8419 locals
[i
].tlsdesc_got_jump_table_offset
=
8420 (htab
->root
.sgotplt
->size
8421 - aarch64_compute_jump_table_size (htab
));
8422 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8423 locals
[i
].got_offset
= (bfd_vma
) - 2;
8426 if (got_type
& GOT_TLS_GD
)
8428 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
8429 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8432 if (got_type
& GOT_TLS_IE
8433 || got_type
& GOT_NORMAL
)
8435 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
8436 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8439 if (got_type
== GOT_UNKNOWN
)
8443 if (bfd_link_pic (info
))
8445 if (got_type
& GOT_TLSDESC_GD
)
8447 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8448 /* Note RELOC_COUNT not incremented here! */
8449 htab
->tlsdesc_plt
= (bfd_vma
) - 1;
8452 if (got_type
& GOT_TLS_GD
)
8453 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
8455 if (got_type
& GOT_TLS_IE
8456 || got_type
& GOT_NORMAL
)
8457 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8462 locals
[i
].got_refcount
= (bfd_vma
) - 1;
8468 /* Allocate global sym .plt and .got entries, and space for global
8469 sym dynamic relocs. */
8470 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_dynrelocs
,
8473 /* Allocate global ifunc sym .plt and .got entries, and space for global
8474 ifunc sym dynamic relocs. */
8475 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_ifunc_dynrelocs
,
8478 /* Allocate .plt and .got entries, and space for local symbols. */
8479 htab_traverse (htab
->loc_hash_table
,
8480 elfNN_aarch64_allocate_local_dynrelocs
,
8483 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8484 htab_traverse (htab
->loc_hash_table
,
8485 elfNN_aarch64_allocate_local_ifunc_dynrelocs
,
8488 /* For every jump slot reserved in the sgotplt, reloc_count is
8489 incremented. However, when we reserve space for TLS descriptors,
8490 it's not incremented, so in order to compute the space reserved
8491 for them, it suffices to multiply the reloc count by the jump
8494 if (htab
->root
.srelplt
)
8495 htab
->sgotplt_jump_table_size
= aarch64_compute_jump_table_size (htab
);
8497 if (htab
->tlsdesc_plt
)
8499 if (htab
->root
.splt
->size
== 0)
8500 htab
->root
.splt
->size
+= PLT_ENTRY_SIZE
;
8502 htab
->tlsdesc_plt
= htab
->root
.splt
->size
;
8503 htab
->root
.splt
->size
+= PLT_TLSDESC_ENTRY_SIZE
;
8505 /* If we're not using lazy TLS relocations, don't generate the
8506 GOT entry required. */
8507 if (!(info
->flags
& DF_BIND_NOW
))
8509 htab
->dt_tlsdesc_got
= htab
->root
.sgot
->size
;
8510 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8514 /* Init mapping symbols information to use later to distingush between
8515 code and data while scanning for errata. */
8516 if (htab
->fix_erratum_835769
|| htab
->fix_erratum_843419
)
8517 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8519 if (!is_aarch64_elf (ibfd
))
8521 bfd_elfNN_aarch64_init_maps (ibfd
);
8524 /* We now have determined the sizes of the various dynamic sections.
8525 Allocate memory for them. */
8527 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8529 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8532 if (s
== htab
->root
.splt
8533 || s
== htab
->root
.sgot
8534 || s
== htab
->root
.sgotplt
8535 || s
== htab
->root
.iplt
8536 || s
== htab
->root
.igotplt
|| s
== htab
->sdynbss
)
8538 /* Strip this section if we don't need it; see the
8541 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
8543 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
8546 /* We use the reloc_count field as a counter if we need
8547 to copy relocs into the output file. */
8548 if (s
!= htab
->root
.srelplt
)
8553 /* It's not one of our sections, so don't allocate space. */
8559 /* If we don't need this section, strip it from the
8560 output file. This is mostly to handle .rela.bss and
8561 .rela.plt. We must create both sections in
8562 create_dynamic_sections, because they must be created
8563 before the linker maps input sections to output
8564 sections. The linker does that before
8565 adjust_dynamic_symbol is called, and it is that
8566 function which decides whether anything needs to go
8567 into these sections. */
8569 s
->flags
|= SEC_EXCLUDE
;
8573 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8576 /* Allocate memory for the section contents. We use bfd_zalloc
8577 here in case unused entries are not reclaimed before the
8578 section's contents are written out. This should not happen,
8579 but this way if it does, we get a R_AARCH64_NONE reloc instead
8581 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
8582 if (s
->contents
== NULL
)
8586 if (htab
->root
.dynamic_sections_created
)
8588 /* Add some entries to the .dynamic section. We fill in the
8589 values later, in elfNN_aarch64_finish_dynamic_sections, but we
8590 must add the entries now so that we get the correct size for
8591 the .dynamic section. The DT_DEBUG entry is filled in by the
8592 dynamic linker and used by the debugger. */
8593 #define add_dynamic_entry(TAG, VAL) \
8594 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8596 if (bfd_link_executable (info
))
8598 if (!add_dynamic_entry (DT_DEBUG
, 0))
8602 if (htab
->root
.splt
->size
!= 0)
8604 if (!add_dynamic_entry (DT_PLTGOT
, 0)
8605 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8606 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
8607 || !add_dynamic_entry (DT_JMPREL
, 0))
8610 if (htab
->tlsdesc_plt
8611 && (!add_dynamic_entry (DT_TLSDESC_PLT
, 0)
8612 || !add_dynamic_entry (DT_TLSDESC_GOT
, 0)))
8618 if (!add_dynamic_entry (DT_RELA
, 0)
8619 || !add_dynamic_entry (DT_RELASZ
, 0)
8620 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
8623 /* If any dynamic relocs apply to a read-only section,
8624 then we need a DT_TEXTREL entry. */
8625 if ((info
->flags
& DF_TEXTREL
) == 0)
8626 elf_link_hash_traverse (& htab
->root
, aarch64_readonly_dynrelocs
,
8629 if ((info
->flags
& DF_TEXTREL
) != 0)
8631 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8636 #undef add_dynamic_entry
8642 elf_aarch64_update_plt_entry (bfd
*output_bfd
,
8643 bfd_reloc_code_real_type r_type
,
8644 bfd_byte
*plt_entry
, bfd_vma value
)
8646 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (r_type
);
8648 _bfd_aarch64_elf_put_addend (output_bfd
, plt_entry
, r_type
, howto
, value
);
8652 elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry
*h
,
8653 struct elf_aarch64_link_hash_table
8654 *htab
, bfd
*output_bfd
,
8655 struct bfd_link_info
*info
)
8657 bfd_byte
*plt_entry
;
8660 bfd_vma gotplt_entry_address
;
8661 bfd_vma plt_entry_address
;
8662 Elf_Internal_Rela rela
;
8664 asection
*plt
, *gotplt
, *relplt
;
8666 /* When building a static executable, use .iplt, .igot.plt and
8667 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8668 if (htab
->root
.splt
!= NULL
)
8670 plt
= htab
->root
.splt
;
8671 gotplt
= htab
->root
.sgotplt
;
8672 relplt
= htab
->root
.srelplt
;
8676 plt
= htab
->root
.iplt
;
8677 gotplt
= htab
->root
.igotplt
;
8678 relplt
= htab
->root
.irelplt
;
8681 /* Get the index in the procedure linkage table which
8682 corresponds to this symbol. This is the index of this symbol
8683 in all the symbols for which we are making plt entries. The
8684 first entry in the procedure linkage table is reserved.
8686 Get the offset into the .got table of the entry that
8687 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
8688 bytes. The first three are reserved for the dynamic linker.
8690 For static executables, we don't reserve anything. */
8692 if (plt
== htab
->root
.splt
)
8694 plt_index
= (h
->plt
.offset
- htab
->plt_header_size
) / htab
->plt_entry_size
;
8695 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
8699 plt_index
= h
->plt
.offset
/ htab
->plt_entry_size
;
8700 got_offset
= plt_index
* GOT_ENTRY_SIZE
;
8703 plt_entry
= plt
->contents
+ h
->plt
.offset
;
8704 plt_entry_address
= plt
->output_section
->vma
8705 + plt
->output_offset
+ h
->plt
.offset
;
8706 gotplt_entry_address
= gotplt
->output_section
->vma
+
8707 gotplt
->output_offset
+ got_offset
;
8709 /* Copy in the boiler-plate for the PLTn entry. */
8710 memcpy (plt_entry
, elfNN_aarch64_small_plt_entry
, PLT_SMALL_ENTRY_SIZE
);
8712 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
8713 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
8714 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
8716 PG (gotplt_entry_address
) -
8717 PG (plt_entry_address
));
8719 /* Fill in the lo12 bits for the load from the pltgot. */
8720 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
8722 PG_OFFSET (gotplt_entry_address
));
8724 /* Fill in the lo12 bits for the add from the pltgot entry. */
8725 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
8727 PG_OFFSET (gotplt_entry_address
));
8729 /* All the GOTPLT Entries are essentially initialized to PLT0. */
8730 bfd_put_NN (output_bfd
,
8731 plt
->output_section
->vma
+ plt
->output_offset
,
8732 gotplt
->contents
+ got_offset
);
8734 rela
.r_offset
= gotplt_entry_address
;
8736 if (h
->dynindx
== -1
8737 || ((bfd_link_executable (info
)
8738 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8740 && h
->type
== STT_GNU_IFUNC
))
8742 /* If an STT_GNU_IFUNC symbol is locally defined, generate
8743 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
8744 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
8745 rela
.r_addend
= (h
->root
.u
.def
.value
8746 + h
->root
.u
.def
.section
->output_section
->vma
8747 + h
->root
.u
.def
.section
->output_offset
);
8751 /* Fill in the entry in the .rela.plt section. */
8752 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (JUMP_SLOT
));
8756 /* Compute the relocation entry to used based on PLT index and do
8757 not adjust reloc_count. The reloc_count has already been adjusted
8758 to account for this entry. */
8759 loc
= relplt
->contents
+ plt_index
* RELOC_SIZE (htab
);
8760 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
8763 /* Size sections even though they're not dynamic. We use it to setup
8764 _TLS_MODULE_BASE_, if needed. */
8767 elfNN_aarch64_always_size_sections (bfd
*output_bfd
,
8768 struct bfd_link_info
*info
)
8772 if (bfd_link_relocatable (info
))
8775 tls_sec
= elf_hash_table (info
)->tls_sec
;
8779 struct elf_link_hash_entry
*tlsbase
;
8781 tlsbase
= elf_link_hash_lookup (elf_hash_table (info
),
8782 "_TLS_MODULE_BASE_", TRUE
, TRUE
, FALSE
);
8786 struct bfd_link_hash_entry
*h
= NULL
;
8787 const struct elf_backend_data
*bed
=
8788 get_elf_backend_data (output_bfd
);
8790 if (!(_bfd_generic_link_add_one_symbol
8791 (info
, output_bfd
, "_TLS_MODULE_BASE_", BSF_LOCAL
,
8792 tls_sec
, 0, NULL
, FALSE
, bed
->collect
, &h
)))
8795 tlsbase
->type
= STT_TLS
;
8796 tlsbase
= (struct elf_link_hash_entry
*) h
;
8797 tlsbase
->def_regular
= 1;
8798 tlsbase
->other
= STV_HIDDEN
;
8799 (*bed
->elf_backend_hide_symbol
) (info
, tlsbase
, TRUE
);
8806 /* Finish up dynamic symbol handling. We set the contents of various
8807 dynamic sections here. */
8809 elfNN_aarch64_finish_dynamic_symbol (bfd
*output_bfd
,
8810 struct bfd_link_info
*info
,
8811 struct elf_link_hash_entry
*h
,
8812 Elf_Internal_Sym
*sym
)
8814 struct elf_aarch64_link_hash_table
*htab
;
8815 htab
= elf_aarch64_hash_table (info
);
8817 if (h
->plt
.offset
!= (bfd_vma
) - 1)
8819 asection
*plt
, *gotplt
, *relplt
;
8821 /* This symbol has an entry in the procedure linkage table. Set
8824 /* When building a static executable, use .iplt, .igot.plt and
8825 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8826 if (htab
->root
.splt
!= NULL
)
8828 plt
= htab
->root
.splt
;
8829 gotplt
= htab
->root
.sgotplt
;
8830 relplt
= htab
->root
.srelplt
;
8834 plt
= htab
->root
.iplt
;
8835 gotplt
= htab
->root
.igotplt
;
8836 relplt
= htab
->root
.irelplt
;
8839 /* This symbol has an entry in the procedure linkage table. Set
8841 if ((h
->dynindx
== -1
8842 && !((h
->forced_local
|| bfd_link_executable (info
))
8844 && h
->type
== STT_GNU_IFUNC
))
8850 elfNN_aarch64_create_small_pltn_entry (h
, htab
, output_bfd
, info
);
8851 if (!h
->def_regular
)
8853 /* Mark the symbol as undefined, rather than as defined in
8854 the .plt section. */
8855 sym
->st_shndx
= SHN_UNDEF
;
8856 /* If the symbol is weak we need to clear the value.
8857 Otherwise, the PLT entry would provide a definition for
8858 the symbol even if the symbol wasn't defined anywhere,
8859 and so the symbol would never be NULL. Leave the value if
8860 there were any relocations where pointer equality matters
8861 (this is a clue for the dynamic linker, to make function
8862 pointer comparisons work between an application and shared
8864 if (!h
->ref_regular_nonweak
|| !h
->pointer_equality_needed
)
8869 if (h
->got
.offset
!= (bfd_vma
) - 1
8870 && elf_aarch64_hash_entry (h
)->got_type
== GOT_NORMAL
)
8872 Elf_Internal_Rela rela
;
8875 /* This symbol has an entry in the global offset table. Set it
8877 if (htab
->root
.sgot
== NULL
|| htab
->root
.srelgot
== NULL
)
8880 rela
.r_offset
= (htab
->root
.sgot
->output_section
->vma
8881 + htab
->root
.sgot
->output_offset
8882 + (h
->got
.offset
& ~(bfd_vma
) 1));
8885 && h
->type
== STT_GNU_IFUNC
)
8887 if (bfd_link_pic (info
))
8889 /* Generate R_AARCH64_GLOB_DAT. */
8896 if (!h
->pointer_equality_needed
)
8899 /* For non-shared object, we can't use .got.plt, which
8900 contains the real function address if we need pointer
8901 equality. We load the GOT entry with the PLT entry. */
8902 plt
= htab
->root
.splt
? htab
->root
.splt
: htab
->root
.iplt
;
8903 bfd_put_NN (output_bfd
, (plt
->output_section
->vma
8904 + plt
->output_offset
8906 htab
->root
.sgot
->contents
8907 + (h
->got
.offset
& ~(bfd_vma
) 1));
8911 else if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
8913 if (!h
->def_regular
)
8916 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
8917 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
8918 rela
.r_addend
= (h
->root
.u
.def
.value
8919 + h
->root
.u
.def
.section
->output_section
->vma
8920 + h
->root
.u
.def
.section
->output_offset
);
8925 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
8926 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
8927 htab
->root
.sgot
->contents
+ h
->got
.offset
);
8928 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (GLOB_DAT
));
8932 loc
= htab
->root
.srelgot
->contents
;
8933 loc
+= htab
->root
.srelgot
->reloc_count
++ * RELOC_SIZE (htab
);
8934 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
8939 Elf_Internal_Rela rela
;
8942 /* This symbol needs a copy reloc. Set it up. */
8944 if (h
->dynindx
== -1
8945 || (h
->root
.type
!= bfd_link_hash_defined
8946 && h
->root
.type
!= bfd_link_hash_defweak
)
8947 || htab
->srelbss
== NULL
)
8950 rela
.r_offset
= (h
->root
.u
.def
.value
8951 + h
->root
.u
.def
.section
->output_section
->vma
8952 + h
->root
.u
.def
.section
->output_offset
);
8953 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (COPY
));
8955 loc
= htab
->srelbss
->contents
;
8956 loc
+= htab
->srelbss
->reloc_count
++ * RELOC_SIZE (htab
);
8957 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
8960 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
8961 be NULL for local symbols. */
8963 && (h
== elf_hash_table (info
)->hdynamic
8964 || h
== elf_hash_table (info
)->hgot
))
8965 sym
->st_shndx
= SHN_ABS
;
8970 /* Finish up local dynamic symbol handling. We set the contents of
8971 various dynamic sections here. */
8974 elfNN_aarch64_finish_local_dynamic_symbol (void **slot
, void *inf
)
8976 struct elf_link_hash_entry
*h
8977 = (struct elf_link_hash_entry
*) *slot
;
8978 struct bfd_link_info
*info
8979 = (struct bfd_link_info
*) inf
;
8981 return elfNN_aarch64_finish_dynamic_symbol (info
->output_bfd
,
8986 elfNN_aarch64_init_small_plt0_entry (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8987 struct elf_aarch64_link_hash_table
8990 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
8991 small and large plts and at the minute just generates
8994 /* PLT0 of the small PLT looks like this in ELF64 -
8995 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
8996 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
8997 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
8999 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9000 // GOTPLT entry for this.
9002 PLT0 will be slightly different in ELF32 due to different got entry
9005 bfd_vma plt_got_2nd_ent
; /* Address of GOT[2]. */
9009 memcpy (htab
->root
.splt
->contents
, elfNN_aarch64_small_plt0_entry
,
9011 elf_section_data (htab
->root
.splt
->output_section
)->this_hdr
.sh_entsize
=
9014 plt_got_2nd_ent
= (htab
->root
.sgotplt
->output_section
->vma
9015 + htab
->root
.sgotplt
->output_offset
9016 + GOT_ENTRY_SIZE
* 2);
9018 plt_base
= htab
->root
.splt
->output_section
->vma
+
9019 htab
->root
.splt
->output_offset
;
9021 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9022 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9023 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9024 htab
->root
.splt
->contents
+ 4,
9025 PG (plt_got_2nd_ent
) - PG (plt_base
+ 4));
9027 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
9028 htab
->root
.splt
->contents
+ 8,
9029 PG_OFFSET (plt_got_2nd_ent
));
9031 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
9032 htab
->root
.splt
->contents
+ 12,
9033 PG_OFFSET (plt_got_2nd_ent
));
9037 elfNN_aarch64_finish_dynamic_sections (bfd
*output_bfd
,
9038 struct bfd_link_info
*info
)
9040 struct elf_aarch64_link_hash_table
*htab
;
9044 htab
= elf_aarch64_hash_table (info
);
9045 dynobj
= htab
->root
.dynobj
;
9046 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
9048 if (htab
->root
.dynamic_sections_created
)
9050 ElfNN_External_Dyn
*dyncon
, *dynconend
;
9052 if (sdyn
== NULL
|| htab
->root
.sgot
== NULL
)
9055 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
9056 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9057 for (; dyncon
< dynconend
; dyncon
++)
9059 Elf_Internal_Dyn dyn
;
9062 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9070 s
= htab
->root
.sgotplt
;
9071 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9075 s
= htab
->root
.srelplt
;
9076 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9080 s
= htab
->root
.srelplt
;
9081 dyn
.d_un
.d_val
= s
->size
;
9084 case DT_TLSDESC_PLT
:
9085 s
= htab
->root
.splt
;
9086 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9087 + htab
->tlsdesc_plt
;
9090 case DT_TLSDESC_GOT
:
9091 s
= htab
->root
.sgot
;
9092 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9093 + htab
->dt_tlsdesc_got
;
9097 bfd_elfNN_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9102 /* Fill in the special first entry in the procedure linkage table. */
9103 if (htab
->root
.splt
&& htab
->root
.splt
->size
> 0)
9105 elfNN_aarch64_init_small_plt0_entry (output_bfd
, htab
);
9107 elf_section_data (htab
->root
.splt
->output_section
)->
9108 this_hdr
.sh_entsize
= htab
->plt_entry_size
;
9111 if (htab
->tlsdesc_plt
)
9113 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
9114 htab
->root
.sgot
->contents
+ htab
->dt_tlsdesc_got
);
9116 memcpy (htab
->root
.splt
->contents
+ htab
->tlsdesc_plt
,
9117 elfNN_aarch64_tlsdesc_small_plt_entry
,
9118 sizeof (elfNN_aarch64_tlsdesc_small_plt_entry
));
9121 bfd_vma adrp1_addr
=
9122 htab
->root
.splt
->output_section
->vma
9123 + htab
->root
.splt
->output_offset
+ htab
->tlsdesc_plt
+ 4;
9125 bfd_vma adrp2_addr
= adrp1_addr
+ 4;
9128 htab
->root
.sgot
->output_section
->vma
9129 + htab
->root
.sgot
->output_offset
;
9131 bfd_vma pltgot_addr
=
9132 htab
->root
.sgotplt
->output_section
->vma
9133 + htab
->root
.sgotplt
->output_offset
;
9135 bfd_vma dt_tlsdesc_got
= got_addr
+ htab
->dt_tlsdesc_got
;
9137 bfd_byte
*plt_entry
=
9138 htab
->root
.splt
->contents
+ htab
->tlsdesc_plt
;
9140 /* adrp x2, DT_TLSDESC_GOT */
9141 elf_aarch64_update_plt_entry (output_bfd
,
9142 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9144 (PG (dt_tlsdesc_got
)
9145 - PG (adrp1_addr
)));
9148 elf_aarch64_update_plt_entry (output_bfd
,
9149 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9152 - PG (adrp2_addr
)));
9154 /* ldr x2, [x2, #0] */
9155 elf_aarch64_update_plt_entry (output_bfd
,
9156 BFD_RELOC_AARCH64_LDSTNN_LO12
,
9158 PG_OFFSET (dt_tlsdesc_got
));
9161 elf_aarch64_update_plt_entry (output_bfd
,
9162 BFD_RELOC_AARCH64_ADD_LO12
,
9164 PG_OFFSET (pltgot_addr
));
9169 if (htab
->root
.sgotplt
)
9171 if (bfd_is_abs_section (htab
->root
.sgotplt
->output_section
))
9174 (_("discarded output section: `%A'"), htab
->root
.sgotplt
);
9178 /* Fill in the first three entries in the global offset table. */
9179 if (htab
->root
.sgotplt
->size
> 0)
9181 bfd_put_NN (output_bfd
, (bfd_vma
) 0, htab
->root
.sgotplt
->contents
);
9183 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
9184 bfd_put_NN (output_bfd
,
9186 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
);
9187 bfd_put_NN (output_bfd
,
9189 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
* 2);
9192 if (htab
->root
.sgot
)
9194 if (htab
->root
.sgot
->size
> 0)
9197 sdyn
? sdyn
->output_section
->vma
+ sdyn
->output_offset
: 0;
9198 bfd_put_NN (output_bfd
, addr
, htab
->root
.sgot
->contents
);
9202 elf_section_data (htab
->root
.sgotplt
->output_section
)->
9203 this_hdr
.sh_entsize
= GOT_ENTRY_SIZE
;
9206 if (htab
->root
.sgot
&& htab
->root
.sgot
->size
> 0)
9207 elf_section_data (htab
->root
.sgot
->output_section
)->this_hdr
.sh_entsize
9210 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9211 htab_traverse (htab
->loc_hash_table
,
9212 elfNN_aarch64_finish_local_dynamic_symbol
,
9218 /* Return address for Ith PLT stub in section PLT, for relocation REL
9219 or (bfd_vma) -1 if it should not be included. */
9222 elfNN_aarch64_plt_sym_val (bfd_vma i
, const asection
*plt
,
9223 const arelent
*rel ATTRIBUTE_UNUSED
)
9225 return plt
->vma
+ PLT_ENTRY_SIZE
+ i
* PLT_SMALL_ENTRY_SIZE
;
9228 /* Returns TRUE if NAME is an AArch64 mapping symbol.
9229 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9230 It also allows a period initiated suffix to be added to the symbol, ie:
9231 "$[adtx]\.[:sym_char]+". */
9234 is_aarch64_mapping_symbol (const char * name
)
9236 return name
!= NULL
/* Paranoia. */
9237 && name
[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9238 the mapping symbols could have acquired a prefix.
9239 We do not support this here, since such symbols no
9240 longer conform to the ARM ELF ABI. */
9241 && (name
[1] == 'd' || name
[1] == 'x')
9242 && (name
[2] == 0 || name
[2] == '.');
9243 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9244 any characters that follow the period are legal characters for the body
9245 of a symbol's name. For now we just assume that this is the case. */
9248 /* Make sure that mapping symbols in object files are not removed via the
9249 "strip --strip-unneeded" tool. These symbols might needed in order to
9250 correctly generate linked files. Once an object file has been linked,
9251 it should be safe to remove them. */
9254 elfNN_aarch64_backend_symbol_processing (bfd
*abfd
, asymbol
*sym
)
9256 if (((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0)
9257 && sym
->section
!= bfd_abs_section_ptr
9258 && is_aarch64_mapping_symbol (sym
->name
))
9259 sym
->flags
|= BSF_KEEP
;
9263 /* We use this so we can override certain functions
9264 (though currently we don't). */
9266 const struct elf_size_info elfNN_aarch64_size_info
=
9268 sizeof (ElfNN_External_Ehdr
),
9269 sizeof (ElfNN_External_Phdr
),
9270 sizeof (ElfNN_External_Shdr
),
9271 sizeof (ElfNN_External_Rel
),
9272 sizeof (ElfNN_External_Rela
),
9273 sizeof (ElfNN_External_Sym
),
9274 sizeof (ElfNN_External_Dyn
),
9275 sizeof (Elf_External_Note
),
9276 4, /* Hash table entry size. */
9277 1, /* Internal relocs per external relocs. */
9278 ARCH_SIZE
, /* Arch size. */
9279 LOG_FILE_ALIGN
, /* Log_file_align. */
9280 ELFCLASSNN
, EV_CURRENT
,
9281 bfd_elfNN_write_out_phdrs
,
9282 bfd_elfNN_write_shdrs_and_ehdr
,
9283 bfd_elfNN_checksum_contents
,
9284 bfd_elfNN_write_relocs
,
9285 bfd_elfNN_swap_symbol_in
,
9286 bfd_elfNN_swap_symbol_out
,
9287 bfd_elfNN_slurp_reloc_table
,
9288 bfd_elfNN_slurp_symbol_table
,
9289 bfd_elfNN_swap_dyn_in
,
9290 bfd_elfNN_swap_dyn_out
,
9291 bfd_elfNN_swap_reloc_in
,
9292 bfd_elfNN_swap_reloc_out
,
9293 bfd_elfNN_swap_reloca_in
,
9294 bfd_elfNN_swap_reloca_out
9297 #define ELF_ARCH bfd_arch_aarch64
9298 #define ELF_MACHINE_CODE EM_AARCH64
9299 #define ELF_MAXPAGESIZE 0x10000
9300 #define ELF_MINPAGESIZE 0x1000
9301 #define ELF_COMMONPAGESIZE 0x1000
9303 #define bfd_elfNN_close_and_cleanup \
9304 elfNN_aarch64_close_and_cleanup
9306 #define bfd_elfNN_bfd_free_cached_info \
9307 elfNN_aarch64_bfd_free_cached_info
9309 #define bfd_elfNN_bfd_is_target_special_symbol \
9310 elfNN_aarch64_is_target_special_symbol
9312 #define bfd_elfNN_bfd_link_hash_table_create \
9313 elfNN_aarch64_link_hash_table_create
9315 #define bfd_elfNN_bfd_merge_private_bfd_data \
9316 elfNN_aarch64_merge_private_bfd_data
9318 #define bfd_elfNN_bfd_print_private_bfd_data \
9319 elfNN_aarch64_print_private_bfd_data
9321 #define bfd_elfNN_bfd_reloc_type_lookup \
9322 elfNN_aarch64_reloc_type_lookup
9324 #define bfd_elfNN_bfd_reloc_name_lookup \
9325 elfNN_aarch64_reloc_name_lookup
9327 #define bfd_elfNN_bfd_set_private_flags \
9328 elfNN_aarch64_set_private_flags
9330 #define bfd_elfNN_find_inliner_info \
9331 elfNN_aarch64_find_inliner_info
9333 #define bfd_elfNN_find_nearest_line \
9334 elfNN_aarch64_find_nearest_line
9336 #define bfd_elfNN_mkobject \
9337 elfNN_aarch64_mkobject
9339 #define bfd_elfNN_new_section_hook \
9340 elfNN_aarch64_new_section_hook
9342 #define elf_backend_adjust_dynamic_symbol \
9343 elfNN_aarch64_adjust_dynamic_symbol
9345 #define elf_backend_always_size_sections \
9346 elfNN_aarch64_always_size_sections
9348 #define elf_backend_check_relocs \
9349 elfNN_aarch64_check_relocs
9351 #define elf_backend_copy_indirect_symbol \
9352 elfNN_aarch64_copy_indirect_symbol
9354 /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
9355 to them in our hash. */
9356 #define elf_backend_create_dynamic_sections \
9357 elfNN_aarch64_create_dynamic_sections
9359 #define elf_backend_init_index_section \
9360 _bfd_elf_init_2_index_sections
9362 #define elf_backend_finish_dynamic_sections \
9363 elfNN_aarch64_finish_dynamic_sections
9365 #define elf_backend_finish_dynamic_symbol \
9366 elfNN_aarch64_finish_dynamic_symbol
9368 #define elf_backend_gc_sweep_hook \
9369 elfNN_aarch64_gc_sweep_hook
9371 #define elf_backend_object_p \
9372 elfNN_aarch64_object_p
9374 #define elf_backend_output_arch_local_syms \
9375 elfNN_aarch64_output_arch_local_syms
9377 #define elf_backend_plt_sym_val \
9378 elfNN_aarch64_plt_sym_val
9380 #define elf_backend_post_process_headers \
9381 elfNN_aarch64_post_process_headers
9383 #define elf_backend_relocate_section \
9384 elfNN_aarch64_relocate_section
9386 #define elf_backend_reloc_type_class \
9387 elfNN_aarch64_reloc_type_class
9389 #define elf_backend_section_from_shdr \
9390 elfNN_aarch64_section_from_shdr
9392 #define elf_backend_size_dynamic_sections \
9393 elfNN_aarch64_size_dynamic_sections
9395 #define elf_backend_size_info \
9396 elfNN_aarch64_size_info
9398 #define elf_backend_write_section \
9399 elfNN_aarch64_write_section
9401 #define elf_backend_symbol_processing \
9402 elfNN_aarch64_backend_symbol_processing
9404 #define elf_backend_can_refcount 1
9405 #define elf_backend_can_gc_sections 1
9406 #define elf_backend_plt_readonly 1
9407 #define elf_backend_want_got_plt 1
9408 #define elf_backend_want_plt_sym 0
9409 #define elf_backend_may_use_rel_p 0
9410 #define elf_backend_may_use_rela_p 1
9411 #define elf_backend_default_use_rela_p 1
9412 #define elf_backend_rela_normal 1
9413 #define elf_backend_dtrel_excludes_plt 1
9414 #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
9415 #define elf_backend_default_execstack 0
9416 #define elf_backend_extern_protected_data 1
9418 #undef elf_backend_obj_attrs_section
9419 #define elf_backend_obj_attrs_section ".ARM.attributes"
9421 #include "elfNN-target.h"
9423 /* CloudABI support. */
9425 #undef TARGET_LITTLE_SYM
9426 #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
9427 #undef TARGET_LITTLE_NAME
9428 #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
9429 #undef TARGET_BIG_SYM
9430 #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
9431 #undef TARGET_BIG_NAME
9432 #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
9435 #define ELF_OSABI ELFOSABI_CLOUDABI
9438 #define elfNN_bed elfNN_aarch64_cloudabi_bed
9440 #include "elfNN-target.h"