1 /* AArch64-specific support for NN-bit ELF.
2 Copyright (C) 2009-2016 Free Software Foundation, Inc.
3 Contributed by ARM Ltd.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; see the file COPYING3. If not,
19 see <http://www.gnu.org/licenses/>. */
21 /* Notes on implementation:
23 Thread Local Store (TLS)
27 The implementation currently supports both traditional TLS and TLS
28 descriptors, but only general dynamic (GD).
30 For traditional TLS the assembler will present us with code
31 fragments of the form:
34 R_AARCH64_TLSGD_ADR_PAGE21(foo)
35 add x0, :tlsgd_lo12:foo
36 R_AARCH64_TLSGD_ADD_LO12_NC(foo)
40 For TLS descriptors the assembler will present us with code
41 fragments of the form:
43 adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo)
44 ldr x1, [x0, #:tlsdesc_lo12:foo] R_AARCH64_TLSDESC_LD64_LO12(foo)
45 add x0, x0, #:tlsdesc_lo12:foo R_AARCH64_TLSDESC_ADD_LO12(foo)
47 blr x1 R_AARCH64_TLSDESC_CALL(foo)
49 The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo
50 indicate that foo is thread local and should be accessed via the
51 traditional TLS mechanims.
53 The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC}
54 against foo indicate that 'foo' is thread local and should be accessed
55 via a TLS descriptor mechanism.
57 The precise instruction sequence is only relevant from the
58 perspective of linker relaxation which is currently not implemented.
60 The static linker must detect that 'foo' is a TLS object and
61 allocate a double GOT entry. The GOT entry must be created for both
62 global and local TLS symbols. Note that this is different to none
63 TLS local objects which do not need a GOT entry.
65 In the traditional TLS mechanism, the double GOT entry is used to
66 provide the tls_index structure, containing module and offset
67 entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD
68 on the module entry. The loader will subsequently fixup this
69 relocation with the module identity.
71 For global traditional TLS symbols the static linker places an
72 R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader
73 will subsequently fixup the offset. For local TLS symbols the static
74 linker fixes up offset.
76 In the TLS descriptor mechanism the double GOT entry is used to
77 provide the descriptor. The static linker places the relocation
78 R_AARCH64_TLSDESC on the first GOT slot. The loader will
79 subsequently fix this up.
83 The handling of TLS symbols is implemented across a number of
84 different backend functions. The following is a top level view of
85 what processing is performed where.
87 The TLS implementation maintains state information for each TLS
88 symbol. The state information for local and global symbols is kept
89 in different places. Global symbols use generic BFD structures while
90 local symbols use backend specific structures that are allocated and
91 maintained entirely by the backend.
95 elfNN_aarch64_check_relocs()
97 This function is invoked for each relocation.
99 The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and
100 R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are
101 spotted. One time creation of local symbol data structures are
102 created when the first local symbol is seen.
104 The reference count for a symbol is incremented. The GOT type for
105 each symbol is marked as general dynamic.
107 elfNN_aarch64_allocate_dynrelocs ()
109 For each global with positive reference count we allocate a double
110 GOT slot. For a traditional TLS symbol we allocate space for two
111 relocation entries on the GOT, for a TLS descriptor symbol we
112 allocate space for one relocation on the slot. Record the GOT offset
115 elfNN_aarch64_size_dynamic_sections ()
117 Iterate all input BFDS, look for in the local symbol data structure
118 constructed earlier for local TLS symbols and allocate them double
119 GOT slots along with space for a single GOT relocation. Update the
120 local symbol structure to record the GOT offset allocated.
122 elfNN_aarch64_relocate_section ()
124 Calls elfNN_aarch64_final_link_relocate ()
126 Emit the relevant TLS relocations against the GOT for each TLS
127 symbol. For local TLS symbols emit the GOT offset directly. The GOT
128 relocations are emitted once the first time a TLS symbol is
129 encountered. The implementation uses the LSB of the GOT offset to
130 flag that the relevant GOT relocations for a symbol have been
131 emitted. All of the TLS code that uses the GOT offset needs to take
132 care to mask out this flag bit before using the offset.
134 elfNN_aarch64_final_link_relocate ()
136 Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */
140 #include "libiberty.h"
142 #include "bfd_stdint.h"
145 #include "objalloc.h"
146 #include "elf/aarch64.h"
147 #include "elfxx-aarch64.h"
152 #define AARCH64_R(NAME) R_AARCH64_ ## NAME
153 #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME
154 #define HOWTO64(...) HOWTO (__VA_ARGS__)
155 #define HOWTO32(...) EMPTY_HOWTO (0)
156 #define LOG_FILE_ALIGN 3
160 #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME
161 #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME
162 #define HOWTO64(...) EMPTY_HOWTO (0)
163 #define HOWTO32(...) HOWTO (__VA_ARGS__)
164 #define LOG_FILE_ALIGN 2
167 #define IS_AARCH64_TLS_RELOC(R_TYPE) \
168 ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
169 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
170 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
171 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
172 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
173 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
174 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
175 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
176 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
177 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
178 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
179 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
180 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
181 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
182 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
183 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
184 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
185 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \
186 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \
187 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \
188 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \
189 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \
190 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \
191 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \
192 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \
193 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \
194 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \
195 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \
196 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \
197 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \
198 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
199 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
200 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
201 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \
202 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \
203 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \
204 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \
205 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \
206 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \
207 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \
208 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \
209 || IS_AARCH64_TLSDESC_RELOC ((R_TYPE)))
211 #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
212 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
213 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \
214 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
215 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
216 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
217 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
218 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \
219 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
220 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
221 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
222 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
223 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
224 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
225 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
226 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
227 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
228 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
229 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
230 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \
231 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
232 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
233 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21)
235 #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
236 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \
237 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
238 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \
239 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
240 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
241 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
242 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
243 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \
244 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
245 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
246 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
247 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1)
249 #define ELIMINATE_COPY_RELOCS 0
251 /* Return size of a relocation entry. HTAB is the bfd's
252 elf_aarch64_link_hash_entry. */
253 #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela))
255 /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */
256 #define GOT_ENTRY_SIZE (ARCH_SIZE / 8)
257 #define PLT_ENTRY_SIZE (32)
258 #define PLT_SMALL_ENTRY_SIZE (16)
259 #define PLT_TLSDESC_ENTRY_SIZE (32)
261 /* Encoding of the nop instruction */
262 #define INSN_NOP 0xd503201f
264 #define aarch64_compute_jump_table_size(htab) \
265 (((htab)->root.srelplt == NULL) ? 0 \
266 : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE)
268 /* The first entry in a procedure linkage table looks like this
269 if the distance between the PLTGOT and the PLT is < 4GB use
270 these PLT entries. Note that the dynamic linker gets &PLTGOT[2]
271 in x16 and needs to work out PLTGOT[1] by using an address of
272 [x16,#-GOT_ENTRY_SIZE]. */
273 static const bfd_byte elfNN_aarch64_small_plt0_entry
[PLT_ENTRY_SIZE
] =
275 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
276 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
278 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
279 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
281 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
282 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
284 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
285 0x1f, 0x20, 0x03, 0xd5, /* nop */
286 0x1f, 0x20, 0x03, 0xd5, /* nop */
287 0x1f, 0x20, 0x03, 0xd5, /* nop */
290 /* Per function entry in a procedure linkage table looks like this
291 if the distance between the PLTGOT and the PLT is < 4GB use
292 these PLT entries. */
293 static const bfd_byte elfNN_aarch64_small_plt_entry
[PLT_SMALL_ENTRY_SIZE
] =
295 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
297 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
298 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
300 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
301 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
303 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
306 static const bfd_byte
307 elfNN_aarch64_tlsdesc_small_plt_entry
[PLT_TLSDESC_ENTRY_SIZE
] =
309 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
310 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
311 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
313 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
314 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
316 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
317 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
319 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
320 0x1f, 0x20, 0x03, 0xd5, /* nop */
321 0x1f, 0x20, 0x03, 0xd5, /* nop */
324 #define elf_info_to_howto elfNN_aarch64_info_to_howto
325 #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto
327 #define AARCH64_ELF_ABI_VERSION 0
329 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
330 #define ALL_ONES (~ (bfd_vma) 0)
332 /* Indexed by the bfd interal reloc enumerators.
333 Therefore, the table needs to be synced with BFD_RELOC_AARCH64_*
336 static reloc_howto_type elfNN_aarch64_howto_table
[] =
340 /* Basic data relocations. */
343 HOWTO (R_AARCH64_NULL
, /* type */
345 3, /* size (0 = byte, 1 = short, 2 = long) */
347 FALSE
, /* pc_relative */
349 complain_overflow_dont
, /* complain_on_overflow */
350 bfd_elf_generic_reloc
, /* special_function */
351 "R_AARCH64_NULL", /* name */
352 FALSE
, /* partial_inplace */
355 FALSE
), /* pcrel_offset */
357 HOWTO (R_AARCH64_NONE
, /* type */
359 3, /* size (0 = byte, 1 = short, 2 = long) */
361 FALSE
, /* pc_relative */
363 complain_overflow_dont
, /* complain_on_overflow */
364 bfd_elf_generic_reloc
, /* special_function */
365 "R_AARCH64_NONE", /* name */
366 FALSE
, /* partial_inplace */
369 FALSE
), /* pcrel_offset */
373 HOWTO64 (AARCH64_R (ABS64
), /* type */
375 4, /* size (4 = long long) */
377 FALSE
, /* pc_relative */
379 complain_overflow_unsigned
, /* complain_on_overflow */
380 bfd_elf_generic_reloc
, /* special_function */
381 AARCH64_R_STR (ABS64
), /* name */
382 FALSE
, /* partial_inplace */
383 ALL_ONES
, /* src_mask */
384 ALL_ONES
, /* dst_mask */
385 FALSE
), /* pcrel_offset */
388 HOWTO (AARCH64_R (ABS32
), /* type */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
392 FALSE
, /* pc_relative */
394 complain_overflow_unsigned
, /* complain_on_overflow */
395 bfd_elf_generic_reloc
, /* special_function */
396 AARCH64_R_STR (ABS32
), /* name */
397 FALSE
, /* partial_inplace */
398 0xffffffff, /* src_mask */
399 0xffffffff, /* dst_mask */
400 FALSE
), /* pcrel_offset */
403 HOWTO (AARCH64_R (ABS16
), /* type */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
407 FALSE
, /* pc_relative */
409 complain_overflow_unsigned
, /* complain_on_overflow */
410 bfd_elf_generic_reloc
, /* special_function */
411 AARCH64_R_STR (ABS16
), /* name */
412 FALSE
, /* partial_inplace */
413 0xffff, /* src_mask */
414 0xffff, /* dst_mask */
415 FALSE
), /* pcrel_offset */
417 /* .xword: (S+A-P) */
418 HOWTO64 (AARCH64_R (PREL64
), /* type */
420 4, /* size (4 = long long) */
422 TRUE
, /* pc_relative */
424 complain_overflow_signed
, /* complain_on_overflow */
425 bfd_elf_generic_reloc
, /* special_function */
426 AARCH64_R_STR (PREL64
), /* name */
427 FALSE
, /* partial_inplace */
428 ALL_ONES
, /* src_mask */
429 ALL_ONES
, /* dst_mask */
430 TRUE
), /* pcrel_offset */
433 HOWTO (AARCH64_R (PREL32
), /* type */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
437 TRUE
, /* pc_relative */
439 complain_overflow_signed
, /* complain_on_overflow */
440 bfd_elf_generic_reloc
, /* special_function */
441 AARCH64_R_STR (PREL32
), /* name */
442 FALSE
, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE
), /* pcrel_offset */
448 HOWTO (AARCH64_R (PREL16
), /* type */
450 1, /* size (0 = byte, 1 = short, 2 = long) */
452 TRUE
, /* pc_relative */
454 complain_overflow_signed
, /* complain_on_overflow */
455 bfd_elf_generic_reloc
, /* special_function */
456 AARCH64_R_STR (PREL16
), /* name */
457 FALSE
, /* partial_inplace */
458 0xffff, /* src_mask */
459 0xffff, /* dst_mask */
460 TRUE
), /* pcrel_offset */
462 /* Group relocations to create a 16, 32, 48 or 64 bit
463 unsigned data or abs address inline. */
465 /* MOVZ: ((S+A) >> 0) & 0xffff */
466 HOWTO (AARCH64_R (MOVW_UABS_G0
), /* type */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
470 FALSE
, /* pc_relative */
472 complain_overflow_unsigned
, /* complain_on_overflow */
473 bfd_elf_generic_reloc
, /* special_function */
474 AARCH64_R_STR (MOVW_UABS_G0
), /* name */
475 FALSE
, /* partial_inplace */
476 0xffff, /* src_mask */
477 0xffff, /* dst_mask */
478 FALSE
), /* pcrel_offset */
480 /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
481 HOWTO (AARCH64_R (MOVW_UABS_G0_NC
), /* type */
483 2, /* size (0 = byte, 1 = short, 2 = long) */
485 FALSE
, /* pc_relative */
487 complain_overflow_dont
, /* complain_on_overflow */
488 bfd_elf_generic_reloc
, /* special_function */
489 AARCH64_R_STR (MOVW_UABS_G0_NC
), /* name */
490 FALSE
, /* partial_inplace */
491 0xffff, /* src_mask */
492 0xffff, /* dst_mask */
493 FALSE
), /* pcrel_offset */
495 /* MOVZ: ((S+A) >> 16) & 0xffff */
496 HOWTO (AARCH64_R (MOVW_UABS_G1
), /* type */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE
, /* pc_relative */
502 complain_overflow_unsigned
, /* complain_on_overflow */
503 bfd_elf_generic_reloc
, /* special_function */
504 AARCH64_R_STR (MOVW_UABS_G1
), /* name */
505 FALSE
, /* partial_inplace */
506 0xffff, /* src_mask */
507 0xffff, /* dst_mask */
508 FALSE
), /* pcrel_offset */
510 /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
511 HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC
), /* type */
513 2, /* size (0 = byte, 1 = short, 2 = long) */
515 FALSE
, /* pc_relative */
517 complain_overflow_dont
, /* complain_on_overflow */
518 bfd_elf_generic_reloc
, /* special_function */
519 AARCH64_R_STR (MOVW_UABS_G1_NC
), /* name */
520 FALSE
, /* partial_inplace */
521 0xffff, /* src_mask */
522 0xffff, /* dst_mask */
523 FALSE
), /* pcrel_offset */
525 /* MOVZ: ((S+A) >> 32) & 0xffff */
526 HOWTO64 (AARCH64_R (MOVW_UABS_G2
), /* type */
528 2, /* size (0 = byte, 1 = short, 2 = long) */
530 FALSE
, /* pc_relative */
532 complain_overflow_unsigned
, /* complain_on_overflow */
533 bfd_elf_generic_reloc
, /* special_function */
534 AARCH64_R_STR (MOVW_UABS_G2
), /* name */
535 FALSE
, /* partial_inplace */
536 0xffff, /* src_mask */
537 0xffff, /* dst_mask */
538 FALSE
), /* pcrel_offset */
540 /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
541 HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC
), /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 FALSE
, /* pc_relative */
547 complain_overflow_dont
, /* complain_on_overflow */
548 bfd_elf_generic_reloc
, /* special_function */
549 AARCH64_R_STR (MOVW_UABS_G2_NC
), /* name */
550 FALSE
, /* partial_inplace */
551 0xffff, /* src_mask */
552 0xffff, /* dst_mask */
553 FALSE
), /* pcrel_offset */
555 /* MOVZ: ((S+A) >> 48) & 0xffff */
556 HOWTO64 (AARCH64_R (MOVW_UABS_G3
), /* type */
558 2, /* size (0 = byte, 1 = short, 2 = long) */
560 FALSE
, /* pc_relative */
562 complain_overflow_unsigned
, /* complain_on_overflow */
563 bfd_elf_generic_reloc
, /* special_function */
564 AARCH64_R_STR (MOVW_UABS_G3
), /* name */
565 FALSE
, /* partial_inplace */
566 0xffff, /* src_mask */
567 0xffff, /* dst_mask */
568 FALSE
), /* pcrel_offset */
570 /* Group relocations to create high part of a 16, 32, 48 or 64 bit
571 signed data or abs address inline. Will change instruction
572 to MOVN or MOVZ depending on sign of calculated value. */
574 /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
575 HOWTO (AARCH64_R (MOVW_SABS_G0
), /* type */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
579 FALSE
, /* pc_relative */
581 complain_overflow_signed
, /* complain_on_overflow */
582 bfd_elf_generic_reloc
, /* special_function */
583 AARCH64_R_STR (MOVW_SABS_G0
), /* name */
584 FALSE
, /* partial_inplace */
585 0xffff, /* src_mask */
586 0xffff, /* dst_mask */
587 FALSE
), /* pcrel_offset */
589 /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
590 HOWTO64 (AARCH64_R (MOVW_SABS_G1
), /* type */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE
, /* pc_relative */
596 complain_overflow_signed
, /* complain_on_overflow */
597 bfd_elf_generic_reloc
, /* special_function */
598 AARCH64_R_STR (MOVW_SABS_G1
), /* name */
599 FALSE
, /* partial_inplace */
600 0xffff, /* src_mask */
601 0xffff, /* dst_mask */
602 FALSE
), /* pcrel_offset */
604 /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
605 HOWTO64 (AARCH64_R (MOVW_SABS_G2
), /* type */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
609 FALSE
, /* pc_relative */
611 complain_overflow_signed
, /* complain_on_overflow */
612 bfd_elf_generic_reloc
, /* special_function */
613 AARCH64_R_STR (MOVW_SABS_G2
), /* name */
614 FALSE
, /* partial_inplace */
615 0xffff, /* src_mask */
616 0xffff, /* dst_mask */
617 FALSE
), /* pcrel_offset */
619 /* Relocations to generate 19, 21 and 33 bit PC-relative load/store
620 addresses: PG(x) is (x & ~0xfff). */
622 /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
623 HOWTO (AARCH64_R (LD_PREL_LO19
), /* type */
625 2, /* size (0 = byte, 1 = short, 2 = long) */
627 TRUE
, /* pc_relative */
629 complain_overflow_signed
, /* complain_on_overflow */
630 bfd_elf_generic_reloc
, /* special_function */
631 AARCH64_R_STR (LD_PREL_LO19
), /* name */
632 FALSE
, /* partial_inplace */
633 0x7ffff, /* src_mask */
634 0x7ffff, /* dst_mask */
635 TRUE
), /* pcrel_offset */
637 /* ADR: (S+A-P) & 0x1fffff */
638 HOWTO (AARCH64_R (ADR_PREL_LO21
), /* type */
640 2, /* size (0 = byte, 1 = short, 2 = long) */
642 TRUE
, /* pc_relative */
644 complain_overflow_signed
, /* complain_on_overflow */
645 bfd_elf_generic_reloc
, /* special_function */
646 AARCH64_R_STR (ADR_PREL_LO21
), /* name */
647 FALSE
, /* partial_inplace */
648 0x1fffff, /* src_mask */
649 0x1fffff, /* dst_mask */
650 TRUE
), /* pcrel_offset */
652 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
653 HOWTO (AARCH64_R (ADR_PREL_PG_HI21
), /* type */
655 2, /* size (0 = byte, 1 = short, 2 = long) */
657 TRUE
, /* pc_relative */
659 complain_overflow_signed
, /* complain_on_overflow */
660 bfd_elf_generic_reloc
, /* special_function */
661 AARCH64_R_STR (ADR_PREL_PG_HI21
), /* name */
662 FALSE
, /* partial_inplace */
663 0x1fffff, /* src_mask */
664 0x1fffff, /* dst_mask */
665 TRUE
), /* pcrel_offset */
667 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
668 HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC
), /* type */
670 2, /* size (0 = byte, 1 = short, 2 = long) */
672 TRUE
, /* pc_relative */
674 complain_overflow_dont
, /* complain_on_overflow */
675 bfd_elf_generic_reloc
, /* special_function */
676 AARCH64_R_STR (ADR_PREL_PG_HI21_NC
), /* name */
677 FALSE
, /* partial_inplace */
678 0x1fffff, /* src_mask */
679 0x1fffff, /* dst_mask */
680 TRUE
), /* pcrel_offset */
682 /* ADD: (S+A) & 0xfff [no overflow check] */
683 HOWTO (AARCH64_R (ADD_ABS_LO12_NC
), /* type */
685 2, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE
, /* pc_relative */
689 complain_overflow_dont
, /* complain_on_overflow */
690 bfd_elf_generic_reloc
, /* special_function */
691 AARCH64_R_STR (ADD_ABS_LO12_NC
), /* name */
692 FALSE
, /* partial_inplace */
693 0x3ffc00, /* src_mask */
694 0x3ffc00, /* dst_mask */
695 FALSE
), /* pcrel_offset */
697 /* LD/ST8: (S+A) & 0xfff */
698 HOWTO (AARCH64_R (LDST8_ABS_LO12_NC
), /* type */
700 2, /* size (0 = byte, 1 = short, 2 = long) */
702 FALSE
, /* pc_relative */
704 complain_overflow_dont
, /* complain_on_overflow */
705 bfd_elf_generic_reloc
, /* special_function */
706 AARCH64_R_STR (LDST8_ABS_LO12_NC
), /* name */
707 FALSE
, /* partial_inplace */
708 0xfff, /* src_mask */
709 0xfff, /* dst_mask */
710 FALSE
), /* pcrel_offset */
712 /* Relocations for control-flow instructions. */
714 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
715 HOWTO (AARCH64_R (TSTBR14
), /* type */
717 2, /* size (0 = byte, 1 = short, 2 = long) */
719 TRUE
, /* pc_relative */
721 complain_overflow_signed
, /* complain_on_overflow */
722 bfd_elf_generic_reloc
, /* special_function */
723 AARCH64_R_STR (TSTBR14
), /* name */
724 FALSE
, /* partial_inplace */
725 0x3fff, /* src_mask */
726 0x3fff, /* dst_mask */
727 TRUE
), /* pcrel_offset */
729 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
730 HOWTO (AARCH64_R (CONDBR19
), /* type */
732 2, /* size (0 = byte, 1 = short, 2 = long) */
734 TRUE
, /* pc_relative */
736 complain_overflow_signed
, /* complain_on_overflow */
737 bfd_elf_generic_reloc
, /* special_function */
738 AARCH64_R_STR (CONDBR19
), /* name */
739 FALSE
, /* partial_inplace */
740 0x7ffff, /* src_mask */
741 0x7ffff, /* dst_mask */
742 TRUE
), /* pcrel_offset */
744 /* B: ((S+A-P) >> 2) & 0x3ffffff */
745 HOWTO (AARCH64_R (JUMP26
), /* type */
747 2, /* size (0 = byte, 1 = short, 2 = long) */
749 TRUE
, /* pc_relative */
751 complain_overflow_signed
, /* complain_on_overflow */
752 bfd_elf_generic_reloc
, /* special_function */
753 AARCH64_R_STR (JUMP26
), /* name */
754 FALSE
, /* partial_inplace */
755 0x3ffffff, /* src_mask */
756 0x3ffffff, /* dst_mask */
757 TRUE
), /* pcrel_offset */
759 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
760 HOWTO (AARCH64_R (CALL26
), /* type */
762 2, /* size (0 = byte, 1 = short, 2 = long) */
764 TRUE
, /* pc_relative */
766 complain_overflow_signed
, /* complain_on_overflow */
767 bfd_elf_generic_reloc
, /* special_function */
768 AARCH64_R_STR (CALL26
), /* name */
769 FALSE
, /* partial_inplace */
770 0x3ffffff, /* src_mask */
771 0x3ffffff, /* dst_mask */
772 TRUE
), /* pcrel_offset */
774 /* LD/ST16: (S+A) & 0xffe */
775 HOWTO (AARCH64_R (LDST16_ABS_LO12_NC
), /* type */
777 2, /* size (0 = byte, 1 = short, 2 = long) */
779 FALSE
, /* pc_relative */
781 complain_overflow_dont
, /* complain_on_overflow */
782 bfd_elf_generic_reloc
, /* special_function */
783 AARCH64_R_STR (LDST16_ABS_LO12_NC
), /* name */
784 FALSE
, /* partial_inplace */
785 0xffe, /* src_mask */
786 0xffe, /* dst_mask */
787 FALSE
), /* pcrel_offset */
789 /* LD/ST32: (S+A) & 0xffc */
790 HOWTO (AARCH64_R (LDST32_ABS_LO12_NC
), /* type */
792 2, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE
, /* pc_relative */
796 complain_overflow_dont
, /* complain_on_overflow */
797 bfd_elf_generic_reloc
, /* special_function */
798 AARCH64_R_STR (LDST32_ABS_LO12_NC
), /* name */
799 FALSE
, /* partial_inplace */
800 0xffc, /* src_mask */
801 0xffc, /* dst_mask */
802 FALSE
), /* pcrel_offset */
804 /* LD/ST64: (S+A) & 0xff8 */
805 HOWTO (AARCH64_R (LDST64_ABS_LO12_NC
), /* type */
807 2, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE
, /* pc_relative */
811 complain_overflow_dont
, /* complain_on_overflow */
812 bfd_elf_generic_reloc
, /* special_function */
813 AARCH64_R_STR (LDST64_ABS_LO12_NC
), /* name */
814 FALSE
, /* partial_inplace */
815 0xff8, /* src_mask */
816 0xff8, /* dst_mask */
817 FALSE
), /* pcrel_offset */
819 /* LD/ST128: (S+A) & 0xff0 */
820 HOWTO (AARCH64_R (LDST128_ABS_LO12_NC
), /* type */
822 2, /* size (0 = byte, 1 = short, 2 = long) */
824 FALSE
, /* pc_relative */
826 complain_overflow_dont
, /* complain_on_overflow */
827 bfd_elf_generic_reloc
, /* special_function */
828 AARCH64_R_STR (LDST128_ABS_LO12_NC
), /* name */
829 FALSE
, /* partial_inplace */
830 0xff0, /* src_mask */
831 0xff0, /* dst_mask */
832 FALSE
), /* pcrel_offset */
834 /* Set a load-literal immediate field to bits
835 0x1FFFFC of G(S)-P */
836 HOWTO (AARCH64_R (GOT_LD_PREL19
), /* type */
838 2, /* size (0 = byte,1 = short,2 = long) */
840 TRUE
, /* pc_relative */
842 complain_overflow_signed
, /* complain_on_overflow */
843 bfd_elf_generic_reloc
, /* special_function */
844 AARCH64_R_STR (GOT_LD_PREL19
), /* name */
845 FALSE
, /* partial_inplace */
846 0xffffe0, /* src_mask */
847 0xffffe0, /* dst_mask */
848 TRUE
), /* pcrel_offset */
850 /* Get to the page for the GOT entry for the symbol
851 (G(S) - P) using an ADRP instruction. */
852 HOWTO (AARCH64_R (ADR_GOT_PAGE
), /* type */
854 2, /* size (0 = byte, 1 = short, 2 = long) */
856 TRUE
, /* pc_relative */
858 complain_overflow_dont
, /* complain_on_overflow */
859 bfd_elf_generic_reloc
, /* special_function */
860 AARCH64_R_STR (ADR_GOT_PAGE
), /* name */
861 FALSE
, /* partial_inplace */
862 0x1fffff, /* src_mask */
863 0x1fffff, /* dst_mask */
864 TRUE
), /* pcrel_offset */
866 /* LD64: GOT offset G(S) & 0xff8 */
867 HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC
), /* type */
869 2, /* size (0 = byte, 1 = short, 2 = long) */
871 FALSE
, /* pc_relative */
873 complain_overflow_dont
, /* complain_on_overflow */
874 bfd_elf_generic_reloc
, /* special_function */
875 AARCH64_R_STR (LD64_GOT_LO12_NC
), /* name */
876 FALSE
, /* partial_inplace */
877 0xff8, /* src_mask */
878 0xff8, /* dst_mask */
879 FALSE
), /* pcrel_offset */
881 /* LD32: GOT offset G(S) & 0xffc */
882 HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC
), /* type */
884 2, /* size (0 = byte, 1 = short, 2 = long) */
886 FALSE
, /* pc_relative */
888 complain_overflow_dont
, /* complain_on_overflow */
889 bfd_elf_generic_reloc
, /* special_function */
890 AARCH64_R_STR (LD32_GOT_LO12_NC
), /* name */
891 FALSE
, /* partial_inplace */
892 0xffc, /* src_mask */
893 0xffc, /* dst_mask */
894 FALSE
), /* pcrel_offset */
896 /* Lower 16 bits of GOT offset for the symbol. */
897 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC
), /* type */
899 2, /* size (0 = byte, 1 = short, 2 = long) */
901 FALSE
, /* pc_relative */
903 complain_overflow_dont
, /* complain_on_overflow */
904 bfd_elf_generic_reloc
, /* special_function */
905 AARCH64_R_STR (MOVW_GOTOFF_G0_NC
), /* name */
906 FALSE
, /* partial_inplace */
907 0xffff, /* src_mask */
908 0xffff, /* dst_mask */
909 FALSE
), /* pcrel_offset */
911 /* Higher 16 bits of GOT offset for the symbol. */
912 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1
), /* type */
914 2, /* size (0 = byte, 1 = short, 2 = long) */
916 FALSE
, /* pc_relative */
918 complain_overflow_unsigned
, /* complain_on_overflow */
919 bfd_elf_generic_reloc
, /* special_function */
920 AARCH64_R_STR (MOVW_GOTOFF_G1
), /* name */
921 FALSE
, /* partial_inplace */
922 0xffff, /* src_mask */
923 0xffff, /* dst_mask */
924 FALSE
), /* pcrel_offset */
926 /* LD64: GOT offset for the symbol. */
927 HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15
), /* type */
929 2, /* size (0 = byte, 1 = short, 2 = long) */
931 FALSE
, /* pc_relative */
933 complain_overflow_unsigned
, /* complain_on_overflow */
934 bfd_elf_generic_reloc
, /* special_function */
935 AARCH64_R_STR (LD64_GOTOFF_LO15
), /* name */
936 FALSE
, /* partial_inplace */
937 0x7ff8, /* src_mask */
938 0x7ff8, /* dst_mask */
939 FALSE
), /* pcrel_offset */
941 /* LD32: GOT offset to the page address of GOT table.
942 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
943 HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14
), /* type */
945 2, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE
, /* pc_relative */
949 complain_overflow_unsigned
, /* complain_on_overflow */
950 bfd_elf_generic_reloc
, /* special_function */
951 AARCH64_R_STR (LD32_GOTPAGE_LO14
), /* name */
952 FALSE
, /* partial_inplace */
953 0x5ffc, /* src_mask */
954 0x5ffc, /* dst_mask */
955 FALSE
), /* pcrel_offset */
957 /* LD64: GOT offset to the page address of GOT table.
958 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
959 HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15
), /* type */
961 2, /* size (0 = byte, 1 = short, 2 = long) */
963 FALSE
, /* pc_relative */
965 complain_overflow_unsigned
, /* complain_on_overflow */
966 bfd_elf_generic_reloc
, /* special_function */
967 AARCH64_R_STR (LD64_GOTPAGE_LO15
), /* name */
968 FALSE
, /* partial_inplace */
969 0x7ff8, /* src_mask */
970 0x7ff8, /* dst_mask */
971 FALSE
), /* pcrel_offset */
973 /* Get to the page for the GOT entry for the symbol
974 (G(S) - P) using an ADRP instruction. */
975 HOWTO (AARCH64_R (TLSGD_ADR_PAGE21
), /* type */
977 2, /* size (0 = byte, 1 = short, 2 = long) */
979 TRUE
, /* pc_relative */
981 complain_overflow_dont
, /* complain_on_overflow */
982 bfd_elf_generic_reloc
, /* special_function */
983 AARCH64_R_STR (TLSGD_ADR_PAGE21
), /* name */
984 FALSE
, /* partial_inplace */
985 0x1fffff, /* src_mask */
986 0x1fffff, /* dst_mask */
987 TRUE
), /* pcrel_offset */
989 HOWTO (AARCH64_R (TLSGD_ADR_PREL21
), /* type */
991 2, /* size (0 = byte, 1 = short, 2 = long) */
993 TRUE
, /* pc_relative */
995 complain_overflow_dont
, /* complain_on_overflow */
996 bfd_elf_generic_reloc
, /* special_function */
997 AARCH64_R_STR (TLSGD_ADR_PREL21
), /* name */
998 FALSE
, /* partial_inplace */
999 0x1fffff, /* src_mask */
1000 0x1fffff, /* dst_mask */
1001 TRUE
), /* pcrel_offset */
1003 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1004 HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC
), /* type */
1006 2, /* size (0 = byte, 1 = short, 2 = long) */
1008 FALSE
, /* pc_relative */
1010 complain_overflow_dont
, /* complain_on_overflow */
1011 bfd_elf_generic_reloc
, /* special_function */
1012 AARCH64_R_STR (TLSGD_ADD_LO12_NC
), /* name */
1013 FALSE
, /* partial_inplace */
1014 0xfff, /* src_mask */
1015 0xfff, /* dst_mask */
1016 FALSE
), /* pcrel_offset */
1018 /* Lower 16 bits of GOT offset to tls_index. */
1019 HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC
), /* type */
1021 2, /* size (0 = byte, 1 = short, 2 = long) */
1023 FALSE
, /* pc_relative */
1025 complain_overflow_dont
, /* complain_on_overflow */
1026 bfd_elf_generic_reloc
, /* special_function */
1027 AARCH64_R_STR (TLSGD_MOVW_G0_NC
), /* name */
1028 FALSE
, /* partial_inplace */
1029 0xffff, /* src_mask */
1030 0xffff, /* dst_mask */
1031 FALSE
), /* pcrel_offset */
1033 /* Higher 16 bits of GOT offset to tls_index. */
1034 HOWTO64 (AARCH64_R (TLSGD_MOVW_G1
), /* type */
1035 16, /* rightshift */
1036 2, /* size (0 = byte, 1 = short, 2 = long) */
1038 FALSE
, /* pc_relative */
1040 complain_overflow_unsigned
, /* complain_on_overflow */
1041 bfd_elf_generic_reloc
, /* special_function */
1042 AARCH64_R_STR (TLSGD_MOVW_G1
), /* name */
1043 FALSE
, /* partial_inplace */
1044 0xffff, /* src_mask */
1045 0xffff, /* dst_mask */
1046 FALSE
), /* pcrel_offset */
1048 HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21
), /* type */
1049 12, /* rightshift */
1050 2, /* size (0 = byte, 1 = short, 2 = long) */
1052 FALSE
, /* pc_relative */
1054 complain_overflow_dont
, /* complain_on_overflow */
1055 bfd_elf_generic_reloc
, /* special_function */
1056 AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21
), /* name */
1057 FALSE
, /* partial_inplace */
1058 0x1fffff, /* src_mask */
1059 0x1fffff, /* dst_mask */
1060 FALSE
), /* pcrel_offset */
1062 HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC
), /* type */
1064 2, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE
, /* pc_relative */
1068 complain_overflow_dont
, /* complain_on_overflow */
1069 bfd_elf_generic_reloc
, /* special_function */
1070 AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC
), /* name */
1071 FALSE
, /* partial_inplace */
1072 0xff8, /* src_mask */
1073 0xff8, /* dst_mask */
1074 FALSE
), /* pcrel_offset */
1076 HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC
), /* type */
1078 2, /* size (0 = byte, 1 = short, 2 = long) */
1080 FALSE
, /* pc_relative */
1082 complain_overflow_dont
, /* complain_on_overflow */
1083 bfd_elf_generic_reloc
, /* special_function */
1084 AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC
), /* name */
1085 FALSE
, /* partial_inplace */
1086 0xffc, /* src_mask */
1087 0xffc, /* dst_mask */
1088 FALSE
), /* pcrel_offset */
1090 HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19
), /* type */
1092 2, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE
, /* pc_relative */
1096 complain_overflow_dont
, /* complain_on_overflow */
1097 bfd_elf_generic_reloc
, /* special_function */
1098 AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19
), /* name */
1099 FALSE
, /* partial_inplace */
1100 0x1ffffc, /* src_mask */
1101 0x1ffffc, /* dst_mask */
1102 FALSE
), /* pcrel_offset */
1104 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC
), /* type */
1106 2, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE
, /* pc_relative */
1110 complain_overflow_dont
, /* complain_on_overflow */
1111 bfd_elf_generic_reloc
, /* special_function */
1112 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC
), /* name */
1113 FALSE
, /* partial_inplace */
1114 0xffff, /* src_mask */
1115 0xffff, /* dst_mask */
1116 FALSE
), /* pcrel_offset */
1118 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1
), /* type */
1119 16, /* rightshift */
1120 2, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE
, /* pc_relative */
1124 complain_overflow_unsigned
, /* complain_on_overflow */
1125 bfd_elf_generic_reloc
, /* special_function */
1126 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1
), /* name */
1127 FALSE
, /* partial_inplace */
1128 0xffff, /* src_mask */
1129 0xffff, /* dst_mask */
1130 FALSE
), /* pcrel_offset */
1132 /* ADD: bit[23:12] of byte offset to module TLS base address. */
1133 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12
), /* type */
1134 12, /* rightshift */
1135 2, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE
, /* pc_relative */
1139 complain_overflow_unsigned
, /* complain_on_overflow */
1140 bfd_elf_generic_reloc
, /* special_function */
1141 AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12
), /* name */
1142 FALSE
, /* partial_inplace */
1143 0xfff, /* src_mask */
1144 0xfff, /* dst_mask */
1145 FALSE
), /* pcrel_offset */
1147 /* Unsigned 12 bit byte offset to module TLS base address. */
1148 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12
), /* type */
1150 2, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE
, /* pc_relative */
1154 complain_overflow_unsigned
, /* complain_on_overflow */
1155 bfd_elf_generic_reloc
, /* special_function */
1156 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12
), /* name */
1157 FALSE
, /* partial_inplace */
1158 0xfff, /* src_mask */
1159 0xfff, /* dst_mask */
1160 FALSE
), /* pcrel_offset */
1162 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
1163 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC
), /* type */
1165 2, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE
, /* pc_relative */
1169 complain_overflow_dont
, /* complain_on_overflow */
1170 bfd_elf_generic_reloc
, /* special_function */
1171 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC
), /* name */
1172 FALSE
, /* partial_inplace */
1173 0xfff, /* src_mask */
1174 0xfff, /* dst_mask */
1175 FALSE
), /* pcrel_offset */
1177 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1178 HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC
), /* type */
1180 2, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE
, /* pc_relative */
1184 complain_overflow_dont
, /* complain_on_overflow */
1185 bfd_elf_generic_reloc
, /* special_function */
1186 AARCH64_R_STR (TLSLD_ADD_LO12_NC
), /* name */
1187 FALSE
, /* partial_inplace */
1188 0xfff, /* src_mask */
1189 0xfff, /* dst_mask */
1190 FALSE
), /* pcrel_offset */
1192 /* Get to the page for the GOT entry for the symbol
1193 (G(S) - P) using an ADRP instruction. */
1194 HOWTO (AARCH64_R (TLSLD_ADR_PAGE21
), /* type */
1195 12, /* rightshift */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1198 TRUE
, /* pc_relative */
1200 complain_overflow_signed
, /* complain_on_overflow */
1201 bfd_elf_generic_reloc
, /* special_function */
1202 AARCH64_R_STR (TLSLD_ADR_PAGE21
), /* name */
1203 FALSE
, /* partial_inplace */
1204 0x1fffff, /* src_mask */
1205 0x1fffff, /* dst_mask */
1206 TRUE
), /* pcrel_offset */
1208 HOWTO (AARCH64_R (TLSLD_ADR_PREL21
), /* type */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1212 TRUE
, /* pc_relative */
1214 complain_overflow_signed
, /* complain_on_overflow */
1215 bfd_elf_generic_reloc
, /* special_function */
1216 AARCH64_R_STR (TLSLD_ADR_PREL21
), /* name */
1217 FALSE
, /* partial_inplace */
1218 0x1fffff, /* src_mask */
1219 0x1fffff, /* dst_mask */
1220 TRUE
), /* pcrel_offset */
1222 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1223 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12
), /* type */
1225 2, /* size (0 = byte, 1 = short, 2 = long) */
1227 FALSE
, /* pc_relative */
1229 complain_overflow_unsigned
, /* complain_on_overflow */
1230 bfd_elf_generic_reloc
, /* special_function */
1231 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12
), /* name */
1232 FALSE
, /* partial_inplace */
1233 0x1ffc00, /* src_mask */
1234 0x1ffc00, /* dst_mask */
1235 FALSE
), /* pcrel_offset */
1237 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
1238 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC
), /* type */
1240 2, /* size (0 = byte, 1 = short, 2 = long) */
1242 FALSE
, /* pc_relative */
1244 complain_overflow_dont
, /* complain_on_overflow */
1245 bfd_elf_generic_reloc
, /* special_function */
1246 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC
), /* name */
1247 FALSE
, /* partial_inplace */
1248 0x1ffc00, /* src_mask */
1249 0x1ffc00, /* dst_mask */
1250 FALSE
), /* pcrel_offset */
1252 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1253 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12
), /* type */
1255 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 FALSE
, /* pc_relative */
1259 complain_overflow_unsigned
, /* complain_on_overflow */
1260 bfd_elf_generic_reloc
, /* special_function */
1261 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12
), /* name */
1262 FALSE
, /* partial_inplace */
1263 0x3ffc00, /* src_mask */
1264 0x3ffc00, /* dst_mask */
1265 FALSE
), /* pcrel_offset */
1267 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
1268 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC
), /* type */
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE
, /* pc_relative */
1274 complain_overflow_dont
, /* complain_on_overflow */
1275 bfd_elf_generic_reloc
, /* special_function */
1276 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC
), /* name */
1277 FALSE
, /* partial_inplace */
1278 0xffc00, /* src_mask */
1279 0xffc00, /* dst_mask */
1280 FALSE
), /* pcrel_offset */
1282 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1283 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12
), /* type */
1285 2, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE
, /* pc_relative */
1289 complain_overflow_unsigned
, /* complain_on_overflow */
1290 bfd_elf_generic_reloc
, /* special_function */
1291 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12
), /* name */
1292 FALSE
, /* partial_inplace */
1293 0x3ffc00, /* src_mask */
1294 0x3ffc00, /* dst_mask */
1295 FALSE
), /* pcrel_offset */
1297 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
1298 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC
), /* type */
1300 2, /* size (0 = byte, 1 = short, 2 = long) */
1302 FALSE
, /* pc_relative */
1304 complain_overflow_dont
, /* complain_on_overflow */
1305 bfd_elf_generic_reloc
, /* special_function */
1306 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC
), /* name */
1307 FALSE
, /* partial_inplace */
1308 0x7fc00, /* src_mask */
1309 0x7fc00, /* dst_mask */
1310 FALSE
), /* pcrel_offset */
1312 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1313 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12
), /* type */
1315 2, /* size (0 = byte, 1 = short, 2 = long) */
1317 FALSE
, /* pc_relative */
1319 complain_overflow_unsigned
, /* complain_on_overflow */
1320 bfd_elf_generic_reloc
, /* special_function */
1321 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12
), /* name */
1322 FALSE
, /* partial_inplace */
1323 0x3ffc00, /* src_mask */
1324 0x3ffc00, /* dst_mask */
1325 FALSE
), /* pcrel_offset */
1327 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
1328 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC
), /* type */
1330 2, /* size (0 = byte, 1 = short, 2 = long) */
1332 FALSE
, /* pc_relative */
1334 complain_overflow_dont
, /* complain_on_overflow */
1335 bfd_elf_generic_reloc
, /* special_function */
1336 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC
), /* name */
1337 FALSE
, /* partial_inplace */
1338 0x3ffc00, /* src_mask */
1339 0x3ffc00, /* dst_mask */
1340 FALSE
), /* pcrel_offset */
1342 /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
1343 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0
), /* type */
1345 2, /* size (0 = byte, 1 = short, 2 = long) */
1347 FALSE
, /* pc_relative */
1349 complain_overflow_unsigned
, /* complain_on_overflow */
1350 bfd_elf_generic_reloc
, /* special_function */
1351 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0
), /* name */
1352 FALSE
, /* partial_inplace */
1353 0xffff, /* src_mask */
1354 0xffff, /* dst_mask */
1355 FALSE
), /* pcrel_offset */
1357 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
1358 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC
), /* type */
1360 2, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE
, /* pc_relative */
1364 complain_overflow_dont
, /* complain_on_overflow */
1365 bfd_elf_generic_reloc
, /* special_function */
1366 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC
), /* name */
1367 FALSE
, /* partial_inplace */
1368 0xffff, /* src_mask */
1369 0xffff, /* dst_mask */
1370 FALSE
), /* pcrel_offset */
1372 /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
1373 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1
), /* type */
1374 16, /* rightshift */
1375 2, /* size (0 = byte, 1 = short, 2 = long) */
1377 FALSE
, /* pc_relative */
1379 complain_overflow_unsigned
, /* complain_on_overflow */
1380 bfd_elf_generic_reloc
, /* special_function */
1381 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1
), /* name */
1382 FALSE
, /* partial_inplace */
1383 0xffff, /* src_mask */
1384 0xffff, /* dst_mask */
1385 FALSE
), /* pcrel_offset */
1387 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
1388 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC
), /* type */
1389 16, /* rightshift */
1390 2, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE
, /* pc_relative */
1394 complain_overflow_dont
, /* complain_on_overflow */
1395 bfd_elf_generic_reloc
, /* special_function */
1396 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC
), /* name */
1397 FALSE
, /* partial_inplace */
1398 0xffff, /* src_mask */
1399 0xffff, /* dst_mask */
1400 FALSE
), /* pcrel_offset */
1402 /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
1403 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2
), /* type */
1404 32, /* rightshift */
1405 2, /* size (0 = byte, 1 = short, 2 = long) */
1407 FALSE
, /* pc_relative */
1409 complain_overflow_unsigned
, /* complain_on_overflow */
1410 bfd_elf_generic_reloc
, /* special_function */
1411 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2
), /* name */
1412 FALSE
, /* partial_inplace */
1413 0xffff, /* src_mask */
1414 0xffff, /* dst_mask */
1415 FALSE
), /* pcrel_offset */
1417 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2
), /* type */
1418 32, /* rightshift */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1421 FALSE
, /* pc_relative */
1423 complain_overflow_unsigned
, /* complain_on_overflow */
1424 bfd_elf_generic_reloc
, /* special_function */
1425 AARCH64_R_STR (TLSLE_MOVW_TPREL_G2
), /* name */
1426 FALSE
, /* partial_inplace */
1427 0xffff, /* src_mask */
1428 0xffff, /* dst_mask */
1429 FALSE
), /* pcrel_offset */
1431 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1
), /* type */
1432 16, /* rightshift */
1433 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE
, /* pc_relative */
1437 complain_overflow_dont
, /* complain_on_overflow */
1438 bfd_elf_generic_reloc
, /* special_function */
1439 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1
), /* name */
1440 FALSE
, /* partial_inplace */
1441 0xffff, /* src_mask */
1442 0xffff, /* dst_mask */
1443 FALSE
), /* pcrel_offset */
1445 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC
), /* type */
1446 16, /* rightshift */
1447 2, /* size (0 = byte, 1 = short, 2 = long) */
1449 FALSE
, /* pc_relative */
1451 complain_overflow_dont
, /* complain_on_overflow */
1452 bfd_elf_generic_reloc
, /* special_function */
1453 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC
), /* name */
1454 FALSE
, /* partial_inplace */
1455 0xffff, /* src_mask */
1456 0xffff, /* dst_mask */
1457 FALSE
), /* pcrel_offset */
1459 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0
), /* type */
1461 2, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE
, /* pc_relative */
1465 complain_overflow_dont
, /* complain_on_overflow */
1466 bfd_elf_generic_reloc
, /* special_function */
1467 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0
), /* name */
1468 FALSE
, /* partial_inplace */
1469 0xffff, /* src_mask */
1470 0xffff, /* dst_mask */
1471 FALSE
), /* pcrel_offset */
1473 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
), /* type */
1475 2, /* size (0 = byte, 1 = short, 2 = long) */
1477 FALSE
, /* pc_relative */
1479 complain_overflow_dont
, /* complain_on_overflow */
1480 bfd_elf_generic_reloc
, /* special_function */
1481 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC
), /* name */
1482 FALSE
, /* partial_inplace */
1483 0xffff, /* src_mask */
1484 0xffff, /* dst_mask */
1485 FALSE
), /* pcrel_offset */
1487 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12
), /* type */
1488 12, /* rightshift */
1489 2, /* size (0 = byte, 1 = short, 2 = long) */
1491 FALSE
, /* pc_relative */
1493 complain_overflow_unsigned
, /* complain_on_overflow */
1494 bfd_elf_generic_reloc
, /* special_function */
1495 AARCH64_R_STR (TLSLE_ADD_TPREL_HI12
), /* name */
1496 FALSE
, /* partial_inplace */
1497 0xfff, /* src_mask */
1498 0xfff, /* dst_mask */
1499 FALSE
), /* pcrel_offset */
1501 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12
), /* type */
1503 2, /* size (0 = byte, 1 = short, 2 = long) */
1505 FALSE
, /* pc_relative */
1507 complain_overflow_unsigned
, /* complain_on_overflow */
1508 bfd_elf_generic_reloc
, /* special_function */
1509 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12
), /* name */
1510 FALSE
, /* partial_inplace */
1511 0xfff, /* src_mask */
1512 0xfff, /* dst_mask */
1513 FALSE
), /* pcrel_offset */
1515 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
), /* type */
1517 2, /* size (0 = byte, 1 = short, 2 = long) */
1519 FALSE
, /* pc_relative */
1521 complain_overflow_dont
, /* complain_on_overflow */
1522 bfd_elf_generic_reloc
, /* special_function */
1523 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC
), /* name */
1524 FALSE
, /* partial_inplace */
1525 0xfff, /* src_mask */
1526 0xfff, /* dst_mask */
1527 FALSE
), /* pcrel_offset */
1529 HOWTO (AARCH64_R (TLSDESC_LD_PREL19
), /* type */
1531 2, /* size (0 = byte, 1 = short, 2 = long) */
1533 TRUE
, /* pc_relative */
1535 complain_overflow_dont
, /* complain_on_overflow */
1536 bfd_elf_generic_reloc
, /* special_function */
1537 AARCH64_R_STR (TLSDESC_LD_PREL19
), /* name */
1538 FALSE
, /* partial_inplace */
1539 0x0ffffe0, /* src_mask */
1540 0x0ffffe0, /* dst_mask */
1541 TRUE
), /* pcrel_offset */
1543 HOWTO (AARCH64_R (TLSDESC_ADR_PREL21
), /* type */
1545 2, /* size (0 = byte, 1 = short, 2 = long) */
1547 TRUE
, /* pc_relative */
1549 complain_overflow_dont
, /* complain_on_overflow */
1550 bfd_elf_generic_reloc
, /* special_function */
1551 AARCH64_R_STR (TLSDESC_ADR_PREL21
), /* name */
1552 FALSE
, /* partial_inplace */
1553 0x1fffff, /* src_mask */
1554 0x1fffff, /* dst_mask */
1555 TRUE
), /* pcrel_offset */
1557 /* Get to the page for the GOT entry for the symbol
1558 (G(S) - P) using an ADRP instruction. */
1559 HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21
), /* type */
1560 12, /* rightshift */
1561 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 TRUE
, /* pc_relative */
1565 complain_overflow_dont
, /* complain_on_overflow */
1566 bfd_elf_generic_reloc
, /* special_function */
1567 AARCH64_R_STR (TLSDESC_ADR_PAGE21
), /* name */
1568 FALSE
, /* partial_inplace */
1569 0x1fffff, /* src_mask */
1570 0x1fffff, /* dst_mask */
1571 TRUE
), /* pcrel_offset */
1573 /* LD64: GOT offset G(S) & 0xff8. */
1574 HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC
), /* type */
1576 2, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE
, /* pc_relative */
1580 complain_overflow_dont
, /* complain_on_overflow */
1581 bfd_elf_generic_reloc
, /* special_function */
1582 AARCH64_R_STR (TLSDESC_LD64_LO12_NC
), /* name */
1583 FALSE
, /* partial_inplace */
1584 0xff8, /* src_mask */
1585 0xff8, /* dst_mask */
1586 FALSE
), /* pcrel_offset */
1588 /* LD32: GOT offset G(S) & 0xffc. */
1589 HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC
), /* type */
1591 2, /* size (0 = byte, 1 = short, 2 = long) */
1593 FALSE
, /* pc_relative */
1595 complain_overflow_dont
, /* complain_on_overflow */
1596 bfd_elf_generic_reloc
, /* special_function */
1597 AARCH64_R_STR (TLSDESC_LD32_LO12_NC
), /* name */
1598 FALSE
, /* partial_inplace */
1599 0xffc, /* src_mask */
1600 0xffc, /* dst_mask */
1601 FALSE
), /* pcrel_offset */
1603 /* ADD: GOT offset G(S) & 0xfff. */
1604 HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC
), /* type */
1606 2, /* size (0 = byte, 1 = short, 2 = long) */
1608 FALSE
, /* pc_relative */
1610 complain_overflow_dont
, /* complain_on_overflow */
1611 bfd_elf_generic_reloc
, /* special_function */
1612 AARCH64_R_STR (TLSDESC_ADD_LO12_NC
), /* name */
1613 FALSE
, /* partial_inplace */
1614 0xfff, /* src_mask */
1615 0xfff, /* dst_mask */
1616 FALSE
), /* pcrel_offset */
1618 HOWTO64 (AARCH64_R (TLSDESC_OFF_G1
), /* type */
1619 16, /* rightshift */
1620 2, /* size (0 = byte, 1 = short, 2 = long) */
1622 FALSE
, /* pc_relative */
1624 complain_overflow_unsigned
, /* complain_on_overflow */
1625 bfd_elf_generic_reloc
, /* special_function */
1626 AARCH64_R_STR (TLSDESC_OFF_G1
), /* name */
1627 FALSE
, /* partial_inplace */
1628 0xffff, /* src_mask */
1629 0xffff, /* dst_mask */
1630 FALSE
), /* pcrel_offset */
1632 HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC
), /* type */
1634 2, /* size (0 = byte, 1 = short, 2 = long) */
1636 FALSE
, /* pc_relative */
1638 complain_overflow_dont
, /* complain_on_overflow */
1639 bfd_elf_generic_reloc
, /* special_function */
1640 AARCH64_R_STR (TLSDESC_OFF_G0_NC
), /* name */
1641 FALSE
, /* partial_inplace */
1642 0xffff, /* src_mask */
1643 0xffff, /* dst_mask */
1644 FALSE
), /* pcrel_offset */
1646 HOWTO64 (AARCH64_R (TLSDESC_LDR
), /* type */
1648 2, /* size (0 = byte, 1 = short, 2 = long) */
1650 FALSE
, /* pc_relative */
1652 complain_overflow_dont
, /* complain_on_overflow */
1653 bfd_elf_generic_reloc
, /* special_function */
1654 AARCH64_R_STR (TLSDESC_LDR
), /* name */
1655 FALSE
, /* partial_inplace */
1658 FALSE
), /* pcrel_offset */
1660 HOWTO64 (AARCH64_R (TLSDESC_ADD
), /* type */
1662 2, /* size (0 = byte, 1 = short, 2 = long) */
1664 FALSE
, /* pc_relative */
1666 complain_overflow_dont
, /* complain_on_overflow */
1667 bfd_elf_generic_reloc
, /* special_function */
1668 AARCH64_R_STR (TLSDESC_ADD
), /* name */
1669 FALSE
, /* partial_inplace */
1672 FALSE
), /* pcrel_offset */
1674 HOWTO (AARCH64_R (TLSDESC_CALL
), /* type */
1676 2, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE
, /* pc_relative */
1680 complain_overflow_dont
, /* complain_on_overflow */
1681 bfd_elf_generic_reloc
, /* special_function */
1682 AARCH64_R_STR (TLSDESC_CALL
), /* name */
1683 FALSE
, /* partial_inplace */
1686 FALSE
), /* pcrel_offset */
1688 HOWTO (AARCH64_R (COPY
), /* type */
1690 2, /* size (0 = byte, 1 = short, 2 = long) */
1692 FALSE
, /* pc_relative */
1694 complain_overflow_bitfield
, /* complain_on_overflow */
1695 bfd_elf_generic_reloc
, /* special_function */
1696 AARCH64_R_STR (COPY
), /* name */
1697 TRUE
, /* partial_inplace */
1698 0xffffffff, /* src_mask */
1699 0xffffffff, /* dst_mask */
1700 FALSE
), /* pcrel_offset */
1702 HOWTO (AARCH64_R (GLOB_DAT
), /* type */
1704 2, /* size (0 = byte, 1 = short, 2 = long) */
1706 FALSE
, /* pc_relative */
1708 complain_overflow_bitfield
, /* complain_on_overflow */
1709 bfd_elf_generic_reloc
, /* special_function */
1710 AARCH64_R_STR (GLOB_DAT
), /* name */
1711 TRUE
, /* partial_inplace */
1712 0xffffffff, /* src_mask */
1713 0xffffffff, /* dst_mask */
1714 FALSE
), /* pcrel_offset */
1716 HOWTO (AARCH64_R (JUMP_SLOT
), /* type */
1718 2, /* size (0 = byte, 1 = short, 2 = long) */
1720 FALSE
, /* pc_relative */
1722 complain_overflow_bitfield
, /* complain_on_overflow */
1723 bfd_elf_generic_reloc
, /* special_function */
1724 AARCH64_R_STR (JUMP_SLOT
), /* name */
1725 TRUE
, /* partial_inplace */
1726 0xffffffff, /* src_mask */
1727 0xffffffff, /* dst_mask */
1728 FALSE
), /* pcrel_offset */
1730 HOWTO (AARCH64_R (RELATIVE
), /* type */
1732 2, /* size (0 = byte, 1 = short, 2 = long) */
1734 FALSE
, /* pc_relative */
1736 complain_overflow_bitfield
, /* complain_on_overflow */
1737 bfd_elf_generic_reloc
, /* special_function */
1738 AARCH64_R_STR (RELATIVE
), /* name */
1739 TRUE
, /* partial_inplace */
1740 ALL_ONES
, /* src_mask */
1741 ALL_ONES
, /* dst_mask */
1742 FALSE
), /* pcrel_offset */
1744 HOWTO (AARCH64_R (TLS_DTPMOD
), /* type */
1746 2, /* size (0 = byte, 1 = short, 2 = long) */
1748 FALSE
, /* pc_relative */
1750 complain_overflow_dont
, /* complain_on_overflow */
1751 bfd_elf_generic_reloc
, /* special_function */
1753 AARCH64_R_STR (TLS_DTPMOD64
), /* name */
1755 AARCH64_R_STR (TLS_DTPMOD
), /* name */
1757 FALSE
, /* partial_inplace */
1759 ALL_ONES
, /* dst_mask */
1760 FALSE
), /* pc_reloffset */
1762 HOWTO (AARCH64_R (TLS_DTPREL
), /* type */
1764 2, /* size (0 = byte, 1 = short, 2 = long) */
1766 FALSE
, /* pc_relative */
1768 complain_overflow_dont
, /* complain_on_overflow */
1769 bfd_elf_generic_reloc
, /* special_function */
1771 AARCH64_R_STR (TLS_DTPREL64
), /* name */
1773 AARCH64_R_STR (TLS_DTPREL
), /* name */
1775 FALSE
, /* partial_inplace */
1777 ALL_ONES
, /* dst_mask */
1778 FALSE
), /* pcrel_offset */
1780 HOWTO (AARCH64_R (TLS_TPREL
), /* type */
1782 2, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE
, /* pc_relative */
1786 complain_overflow_dont
, /* complain_on_overflow */
1787 bfd_elf_generic_reloc
, /* special_function */
1789 AARCH64_R_STR (TLS_TPREL64
), /* name */
1791 AARCH64_R_STR (TLS_TPREL
), /* name */
1793 FALSE
, /* partial_inplace */
1795 ALL_ONES
, /* dst_mask */
1796 FALSE
), /* pcrel_offset */
1798 HOWTO (AARCH64_R (TLSDESC
), /* type */
1800 2, /* size (0 = byte, 1 = short, 2 = long) */
1802 FALSE
, /* pc_relative */
1804 complain_overflow_dont
, /* complain_on_overflow */
1805 bfd_elf_generic_reloc
, /* special_function */
1806 AARCH64_R_STR (TLSDESC
), /* name */
1807 FALSE
, /* partial_inplace */
1809 ALL_ONES
, /* dst_mask */
1810 FALSE
), /* pcrel_offset */
1812 HOWTO (AARCH64_R (IRELATIVE
), /* type */
1814 2, /* size (0 = byte, 1 = short, 2 = long) */
1816 FALSE
, /* pc_relative */
1818 complain_overflow_bitfield
, /* complain_on_overflow */
1819 bfd_elf_generic_reloc
, /* special_function */
1820 AARCH64_R_STR (IRELATIVE
), /* name */
1821 FALSE
, /* partial_inplace */
1823 ALL_ONES
, /* dst_mask */
1824 FALSE
), /* pcrel_offset */
1829 static reloc_howto_type elfNN_aarch64_howto_none
=
1830 HOWTO (R_AARCH64_NONE
, /* type */
1832 3, /* size (0 = byte, 1 = short, 2 = long) */
1834 FALSE
, /* pc_relative */
1836 complain_overflow_dont
,/* complain_on_overflow */
1837 bfd_elf_generic_reloc
, /* special_function */
1838 "R_AARCH64_NONE", /* name */
1839 FALSE
, /* partial_inplace */
1842 FALSE
); /* pcrel_offset */
1844 /* Given HOWTO, return the bfd internal relocation enumerator. */
1846 static bfd_reloc_code_real_type
1847 elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type
*howto
)
1850 = (int) ARRAY_SIZE (elfNN_aarch64_howto_table
);
1851 const ptrdiff_t offset
1852 = howto
- elfNN_aarch64_howto_table
;
1854 if (offset
> 0 && offset
< size
- 1)
1855 return BFD_RELOC_AARCH64_RELOC_START
+ offset
;
1857 if (howto
== &elfNN_aarch64_howto_none
)
1858 return BFD_RELOC_AARCH64_NONE
;
1860 return BFD_RELOC_AARCH64_RELOC_START
;
1863 /* Given R_TYPE, return the bfd internal relocation enumerator. */
1865 static bfd_reloc_code_real_type
1866 elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type
)
1868 static bfd_boolean initialized_p
= FALSE
;
1869 /* Indexed by R_TYPE, values are offsets in the howto_table. */
1870 static unsigned int offsets
[R_AARCH64_end
];
1872 if (initialized_p
== FALSE
)
1876 for (i
= 1; i
< ARRAY_SIZE (elfNN_aarch64_howto_table
) - 1; ++i
)
1877 if (elfNN_aarch64_howto_table
[i
].type
!= 0)
1878 offsets
[elfNN_aarch64_howto_table
[i
].type
] = i
;
1880 initialized_p
= TRUE
;
1883 if (r_type
== R_AARCH64_NONE
|| r_type
== R_AARCH64_NULL
)
1884 return BFD_RELOC_AARCH64_NONE
;
1886 /* PR 17512: file: b371e70a. */
1887 if (r_type
>= R_AARCH64_end
)
1889 _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type
);
1890 bfd_set_error (bfd_error_bad_value
);
1891 return BFD_RELOC_AARCH64_NONE
;
1894 return BFD_RELOC_AARCH64_RELOC_START
+ offsets
[r_type
];
1897 struct elf_aarch64_reloc_map
1899 bfd_reloc_code_real_type from
;
1900 bfd_reloc_code_real_type to
;
1903 /* Map bfd generic reloc to AArch64-specific reloc. */
1904 static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map
[] =
1906 {BFD_RELOC_NONE
, BFD_RELOC_AARCH64_NONE
},
1908 /* Basic data relocations. */
1909 {BFD_RELOC_CTOR
, BFD_RELOC_AARCH64_NN
},
1910 {BFD_RELOC_64
, BFD_RELOC_AARCH64_64
},
1911 {BFD_RELOC_32
, BFD_RELOC_AARCH64_32
},
1912 {BFD_RELOC_16
, BFD_RELOC_AARCH64_16
},
1913 {BFD_RELOC_64_PCREL
, BFD_RELOC_AARCH64_64_PCREL
},
1914 {BFD_RELOC_32_PCREL
, BFD_RELOC_AARCH64_32_PCREL
},
1915 {BFD_RELOC_16_PCREL
, BFD_RELOC_AARCH64_16_PCREL
},
1918 /* Given the bfd internal relocation enumerator in CODE, return the
1919 corresponding howto entry. */
1921 static reloc_howto_type
*
1922 elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code
)
1926 /* Convert bfd generic reloc to AArch64-specific reloc. */
1927 if (code
< BFD_RELOC_AARCH64_RELOC_START
1928 || code
> BFD_RELOC_AARCH64_RELOC_END
)
1929 for (i
= 0; i
< ARRAY_SIZE (elf_aarch64_reloc_map
); i
++)
1930 if (elf_aarch64_reloc_map
[i
].from
== code
)
1932 code
= elf_aarch64_reloc_map
[i
].to
;
1936 if (code
> BFD_RELOC_AARCH64_RELOC_START
1937 && code
< BFD_RELOC_AARCH64_RELOC_END
)
1938 if (elfNN_aarch64_howto_table
[code
- BFD_RELOC_AARCH64_RELOC_START
].type
)
1939 return &elfNN_aarch64_howto_table
[code
- BFD_RELOC_AARCH64_RELOC_START
];
1941 if (code
== BFD_RELOC_AARCH64_NONE
)
1942 return &elfNN_aarch64_howto_none
;
1947 static reloc_howto_type
*
1948 elfNN_aarch64_howto_from_type (unsigned int r_type
)
1950 bfd_reloc_code_real_type val
;
1951 reloc_howto_type
*howto
;
1956 bfd_set_error (bfd_error_bad_value
);
1961 if (r_type
== R_AARCH64_NONE
)
1962 return &elfNN_aarch64_howto_none
;
1964 val
= elfNN_aarch64_bfd_reloc_from_type (r_type
);
1965 howto
= elfNN_aarch64_howto_from_bfd_reloc (val
);
1970 bfd_set_error (bfd_error_bad_value
);
1975 elfNN_aarch64_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*bfd_reloc
,
1976 Elf_Internal_Rela
*elf_reloc
)
1978 unsigned int r_type
;
1980 r_type
= ELFNN_R_TYPE (elf_reloc
->r_info
);
1981 bfd_reloc
->howto
= elfNN_aarch64_howto_from_type (r_type
);
1984 static reloc_howto_type
*
1985 elfNN_aarch64_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1986 bfd_reloc_code_real_type code
)
1988 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (code
);
1993 bfd_set_error (bfd_error_bad_value
);
1997 static reloc_howto_type
*
1998 elfNN_aarch64_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2003 for (i
= 1; i
< ARRAY_SIZE (elfNN_aarch64_howto_table
) - 1; ++i
)
2004 if (elfNN_aarch64_howto_table
[i
].name
!= NULL
2005 && strcasecmp (elfNN_aarch64_howto_table
[i
].name
, r_name
) == 0)
2006 return &elfNN_aarch64_howto_table
[i
];
2011 #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
2012 #define TARGET_LITTLE_NAME "elfNN-littleaarch64"
2013 #define TARGET_BIG_SYM aarch64_elfNN_be_vec
2014 #define TARGET_BIG_NAME "elfNN-bigaarch64"
2016 /* The linker script knows the section names for placement.
2017 The entry_names are used to do simple name mangling on the stubs.
2018 Given a function name, and its type, the stub can be found. The
2019 name can be changed. The only requirement is the %s be present. */
2020 #define STUB_ENTRY_NAME "__%s_veneer"
2022 /* The name of the dynamic interpreter. This is put in the .interp
2024 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2026 #define AARCH64_MAX_FWD_BRANCH_OFFSET \
2027 (((1 << 25) - 1) << 2)
2028 #define AARCH64_MAX_BWD_BRANCH_OFFSET \
2031 #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
2032 #define AARCH64_MIN_ADRP_IMM (-(1 << 20))
2035 aarch64_valid_for_adrp_p (bfd_vma value
, bfd_vma place
)
2037 bfd_signed_vma offset
= (bfd_signed_vma
) (PG (value
) - PG (place
)) >> 12;
2038 return offset
<= AARCH64_MAX_ADRP_IMM
&& offset
>= AARCH64_MIN_ADRP_IMM
;
2042 aarch64_valid_branch_p (bfd_vma value
, bfd_vma place
)
2044 bfd_signed_vma offset
= (bfd_signed_vma
) (value
- place
);
2045 return (offset
<= AARCH64_MAX_FWD_BRANCH_OFFSET
2046 && offset
>= AARCH64_MAX_BWD_BRANCH_OFFSET
);
2049 static const uint32_t aarch64_adrp_branch_stub
[] =
2051 0x90000010, /* adrp ip0, X */
2052 /* R_AARCH64_ADR_HI21_PCREL(X) */
2053 0x91000210, /* add ip0, ip0, :lo12:X */
2054 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2055 0xd61f0200, /* br ip0 */
2058 static const uint32_t aarch64_long_branch_stub
[] =
2061 0x58000090, /* ldr ip0, 1f */
2063 0x18000090, /* ldr wip0, 1f */
2065 0x10000011, /* adr ip1, #0 */
2066 0x8b110210, /* add ip0, ip0, ip1 */
2067 0xd61f0200, /* br ip0 */
2068 0x00000000, /* 1: .xword or .word
2069 R_AARCH64_PRELNN(X) + 12
2074 static const uint32_t aarch64_erratum_835769_stub
[] =
2076 0x00000000, /* Placeholder for multiply accumulate. */
2077 0x14000000, /* b <label> */
2080 static const uint32_t aarch64_erratum_843419_stub
[] =
2082 0x00000000, /* Placeholder for LDR instruction. */
2083 0x14000000, /* b <label> */
2086 /* Section name for stubs is the associated section name plus this
2088 #define STUB_SUFFIX ".stub"
2090 enum elf_aarch64_stub_type
2093 aarch64_stub_adrp_branch
,
2094 aarch64_stub_long_branch
,
2095 aarch64_stub_erratum_835769_veneer
,
2096 aarch64_stub_erratum_843419_veneer
,
2099 struct elf_aarch64_stub_hash_entry
2101 /* Base hash table entry structure. */
2102 struct bfd_hash_entry root
;
2104 /* The stub section. */
2107 /* Offset within stub_sec of the beginning of this stub. */
2108 bfd_vma stub_offset
;
2110 /* Given the symbol's value and its section we can determine its final
2111 value when building the stubs (so the stub knows where to jump). */
2112 bfd_vma target_value
;
2113 asection
*target_section
;
2115 enum elf_aarch64_stub_type stub_type
;
2117 /* The symbol table entry, if any, that this was derived from. */
2118 struct elf_aarch64_link_hash_entry
*h
;
2120 /* Destination symbol type */
2121 unsigned char st_type
;
2123 /* Where this stub is being called from, or, in the case of combined
2124 stub sections, the first input section in the group. */
2127 /* The name for the local symbol at the start of this stub. The
2128 stub name in the hash table has to be unique; this does not, so
2129 it can be friendlier. */
2132 /* The instruction which caused this stub to be generated (only valid for
2133 erratum 835769 workaround stubs at present). */
2134 uint32_t veneered_insn
;
2136 /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
2137 bfd_vma adrp_offset
;
2140 /* Used to build a map of a section. This is required for mixed-endian
2143 typedef struct elf_elf_section_map
2148 elf_aarch64_section_map
;
2151 typedef struct _aarch64_elf_section_data
2153 struct bfd_elf_section_data elf
;
2154 unsigned int mapcount
;
2155 unsigned int mapsize
;
2156 elf_aarch64_section_map
*map
;
2158 _aarch64_elf_section_data
;
2160 #define elf_aarch64_section_data(sec) \
2161 ((_aarch64_elf_section_data *) elf_section_data (sec))
2163 /* The size of the thread control block which is defined to be two pointers. */
2164 #define TCB_SIZE (ARCH_SIZE/8)*2
2166 struct elf_aarch64_local_symbol
2168 unsigned int got_type
;
2169 bfd_signed_vma got_refcount
;
2172 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
2173 offset is from the end of the jump table and reserved entries
2176 The magic value (bfd_vma) -1 indicates that an offset has not be
2178 bfd_vma tlsdesc_got_jump_table_offset
;
2181 struct elf_aarch64_obj_tdata
2183 struct elf_obj_tdata root
;
2185 /* local symbol descriptors */
2186 struct elf_aarch64_local_symbol
*locals
;
2188 /* Zero to warn when linking objects with incompatible enum sizes. */
2189 int no_enum_size_warning
;
2191 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2192 int no_wchar_size_warning
;
2195 #define elf_aarch64_tdata(bfd) \
2196 ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
2198 #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
2200 #define is_aarch64_elf(bfd) \
2201 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2202 && elf_tdata (bfd) != NULL \
2203 && elf_object_id (bfd) == AARCH64_ELF_DATA)
2206 elfNN_aarch64_mkobject (bfd
*abfd
)
2208 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_aarch64_obj_tdata
),
2212 #define elf_aarch64_hash_entry(ent) \
2213 ((struct elf_aarch64_link_hash_entry *)(ent))
2215 #define GOT_UNKNOWN 0
2216 #define GOT_NORMAL 1
2217 #define GOT_TLS_GD 2
2218 #define GOT_TLS_IE 4
2219 #define GOT_TLSDESC_GD 8
2221 #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
2223 /* AArch64 ELF linker hash entry. */
2224 struct elf_aarch64_link_hash_entry
2226 struct elf_link_hash_entry root
;
2228 /* Track dynamic relocs copied for this symbol. */
2229 struct elf_dyn_relocs
*dyn_relocs
;
2231 /* Since PLT entries have variable size, we need to record the
2232 index into .got.plt instead of recomputing it from the PLT
2234 bfd_signed_vma plt_got_offset
;
2236 /* Bit mask representing the type of GOT entry(s) if any required by
2238 unsigned int got_type
;
2240 /* A pointer to the most recently used stub hash entry against this
2242 struct elf_aarch64_stub_hash_entry
*stub_cache
;
2244 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2245 is from the end of the jump table and reserved entries within the PLTGOT.
2247 The magic value (bfd_vma) -1 indicates that an offset has not
2249 bfd_vma tlsdesc_got_jump_table_offset
;
2253 elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry
*h
,
2255 unsigned long r_symndx
)
2258 return elf_aarch64_hash_entry (h
)->got_type
;
2260 if (! elf_aarch64_locals (abfd
))
2263 return elf_aarch64_locals (abfd
)[r_symndx
].got_type
;
2266 /* Get the AArch64 elf linker hash table from a link_info structure. */
2267 #define elf_aarch64_hash_table(info) \
2268 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
2270 #define aarch64_stub_hash_lookup(table, string, create, copy) \
2271 ((struct elf_aarch64_stub_hash_entry *) \
2272 bfd_hash_lookup ((table), (string), (create), (copy)))
2274 /* AArch64 ELF linker hash table. */
2275 struct elf_aarch64_link_hash_table
2277 /* The main hash table. */
2278 struct elf_link_hash_table root
;
2280 /* Nonzero to force PIC branch veneers. */
2283 /* Fix erratum 835769. */
2284 int fix_erratum_835769
;
2286 /* Fix erratum 843419. */
2287 int fix_erratum_843419
;
2289 /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */
2290 int fix_erratum_843419_adr
;
2292 /* The number of bytes in the initial entry in the PLT. */
2293 bfd_size_type plt_header_size
;
2295 /* The number of bytes in the subsequent PLT etries. */
2296 bfd_size_type plt_entry_size
;
2298 /* Short-cuts to get to dynamic linker sections. */
2302 /* Small local sym cache. */
2303 struct sym_cache sym_cache
;
2305 /* For convenience in allocate_dynrelocs. */
2308 /* The amount of space used by the reserved portion of the sgotplt
2309 section, plus whatever space is used by the jump slots. */
2310 bfd_vma sgotplt_jump_table_size
;
2312 /* The stub hash table. */
2313 struct bfd_hash_table stub_hash_table
;
2315 /* Linker stub bfd. */
2318 /* Linker call-backs. */
2319 asection
*(*add_stub_section
) (const char *, asection
*);
2320 void (*layout_sections_again
) (void);
2322 /* Array to keep track of which stub sections have been created, and
2323 information on stub grouping. */
2326 /* This is the section to which stubs in the group will be
2329 /* The stub section. */
2333 /* Assorted information used by elfNN_aarch64_size_stubs. */
2334 unsigned int bfd_count
;
2335 unsigned int top_index
;
2336 asection
**input_list
;
2338 /* The offset into splt of the PLT entry for the TLS descriptor
2339 resolver. Special values are 0, if not necessary (or not found
2340 to be necessary yet), and -1 if needed but not determined
2342 bfd_vma tlsdesc_plt
;
2344 /* The GOT offset for the lazy trampoline. Communicated to the
2345 loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
2346 indicates an offset is not allocated. */
2347 bfd_vma dt_tlsdesc_got
;
2349 /* Used by local STT_GNU_IFUNC symbols. */
2350 htab_t loc_hash_table
;
2351 void * loc_hash_memory
;
2354 /* Create an entry in an AArch64 ELF linker hash table. */
2356 static struct bfd_hash_entry
*
2357 elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2358 struct bfd_hash_table
*table
,
2361 struct elf_aarch64_link_hash_entry
*ret
=
2362 (struct elf_aarch64_link_hash_entry
*) entry
;
2364 /* Allocate the structure if it has not already been allocated by a
2367 ret
= bfd_hash_allocate (table
,
2368 sizeof (struct elf_aarch64_link_hash_entry
));
2370 return (struct bfd_hash_entry
*) ret
;
2372 /* Call the allocation method of the superclass. */
2373 ret
= ((struct elf_aarch64_link_hash_entry
*)
2374 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2378 ret
->dyn_relocs
= NULL
;
2379 ret
->got_type
= GOT_UNKNOWN
;
2380 ret
->plt_got_offset
= (bfd_vma
) - 1;
2381 ret
->stub_cache
= NULL
;
2382 ret
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
2385 return (struct bfd_hash_entry
*) ret
;
2388 /* Initialize an entry in the stub hash table. */
2390 static struct bfd_hash_entry
*
2391 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2392 struct bfd_hash_table
*table
, const char *string
)
2394 /* Allocate the structure if it has not already been allocated by a
2398 entry
= bfd_hash_allocate (table
,
2400 elf_aarch64_stub_hash_entry
));
2405 /* Call the allocation method of the superclass. */
2406 entry
= bfd_hash_newfunc (entry
, table
, string
);
2409 struct elf_aarch64_stub_hash_entry
*eh
;
2411 /* Initialize the local fields. */
2412 eh
= (struct elf_aarch64_stub_hash_entry
*) entry
;
2413 eh
->adrp_offset
= 0;
2414 eh
->stub_sec
= NULL
;
2415 eh
->stub_offset
= 0;
2416 eh
->target_value
= 0;
2417 eh
->target_section
= NULL
;
2418 eh
->stub_type
= aarch64_stub_none
;
2426 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
2427 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2428 as global symbol. We reuse indx and dynstr_index for local symbol
2429 hash since they aren't used by global symbols in this backend. */
2432 elfNN_aarch64_local_htab_hash (const void *ptr
)
2434 struct elf_link_hash_entry
*h
2435 = (struct elf_link_hash_entry
*) ptr
;
2436 return ELF_LOCAL_SYMBOL_HASH (h
->indx
, h
->dynstr_index
);
2439 /* Compare local hash entries. */
2442 elfNN_aarch64_local_htab_eq (const void *ptr1
, const void *ptr2
)
2444 struct elf_link_hash_entry
*h1
2445 = (struct elf_link_hash_entry
*) ptr1
;
2446 struct elf_link_hash_entry
*h2
2447 = (struct elf_link_hash_entry
*) ptr2
;
2449 return h1
->indx
== h2
->indx
&& h1
->dynstr_index
== h2
->dynstr_index
;
2452 /* Find and/or create a hash entry for local symbol. */
2454 static struct elf_link_hash_entry
*
2455 elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table
*htab
,
2456 bfd
*abfd
, const Elf_Internal_Rela
*rel
,
2459 struct elf_aarch64_link_hash_entry e
, *ret
;
2460 asection
*sec
= abfd
->sections
;
2461 hashval_t h
= ELF_LOCAL_SYMBOL_HASH (sec
->id
,
2462 ELFNN_R_SYM (rel
->r_info
));
2465 e
.root
.indx
= sec
->id
;
2466 e
.root
.dynstr_index
= ELFNN_R_SYM (rel
->r_info
);
2467 slot
= htab_find_slot_with_hash (htab
->loc_hash_table
, &e
, h
,
2468 create
? INSERT
: NO_INSERT
);
2475 ret
= (struct elf_aarch64_link_hash_entry
*) *slot
;
2479 ret
= (struct elf_aarch64_link_hash_entry
*)
2480 objalloc_alloc ((struct objalloc
*) htab
->loc_hash_memory
,
2481 sizeof (struct elf_aarch64_link_hash_entry
));
2484 memset (ret
, 0, sizeof (*ret
));
2485 ret
->root
.indx
= sec
->id
;
2486 ret
->root
.dynstr_index
= ELFNN_R_SYM (rel
->r_info
);
2487 ret
->root
.dynindx
= -1;
2493 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2496 elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info
*info
,
2497 struct elf_link_hash_entry
*dir
,
2498 struct elf_link_hash_entry
*ind
)
2500 struct elf_aarch64_link_hash_entry
*edir
, *eind
;
2502 edir
= (struct elf_aarch64_link_hash_entry
*) dir
;
2503 eind
= (struct elf_aarch64_link_hash_entry
*) ind
;
2505 if (eind
->dyn_relocs
!= NULL
)
2507 if (edir
->dyn_relocs
!= NULL
)
2509 struct elf_dyn_relocs
**pp
;
2510 struct elf_dyn_relocs
*p
;
2512 /* Add reloc counts against the indirect sym to the direct sym
2513 list. Merge any entries against the same section. */
2514 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
2516 struct elf_dyn_relocs
*q
;
2518 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2519 if (q
->sec
== p
->sec
)
2521 q
->pc_count
+= p
->pc_count
;
2522 q
->count
+= p
->count
;
2529 *pp
= edir
->dyn_relocs
;
2532 edir
->dyn_relocs
= eind
->dyn_relocs
;
2533 eind
->dyn_relocs
= NULL
;
2536 if (ind
->root
.type
== bfd_link_hash_indirect
)
2538 /* Copy over PLT info. */
2539 if (dir
->got
.refcount
<= 0)
2541 edir
->got_type
= eind
->got_type
;
2542 eind
->got_type
= GOT_UNKNOWN
;
2546 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2549 /* Destroy an AArch64 elf linker hash table. */
2552 elfNN_aarch64_link_hash_table_free (bfd
*obfd
)
2554 struct elf_aarch64_link_hash_table
*ret
2555 = (struct elf_aarch64_link_hash_table
*) obfd
->link
.hash
;
2557 if (ret
->loc_hash_table
)
2558 htab_delete (ret
->loc_hash_table
);
2559 if (ret
->loc_hash_memory
)
2560 objalloc_free ((struct objalloc
*) ret
->loc_hash_memory
);
2562 bfd_hash_table_free (&ret
->stub_hash_table
);
2563 _bfd_elf_link_hash_table_free (obfd
);
2566 /* Create an AArch64 elf linker hash table. */
2568 static struct bfd_link_hash_table
*
2569 elfNN_aarch64_link_hash_table_create (bfd
*abfd
)
2571 struct elf_aarch64_link_hash_table
*ret
;
2572 bfd_size_type amt
= sizeof (struct elf_aarch64_link_hash_table
);
2574 ret
= bfd_zmalloc (amt
);
2578 if (!_bfd_elf_link_hash_table_init
2579 (&ret
->root
, abfd
, elfNN_aarch64_link_hash_newfunc
,
2580 sizeof (struct elf_aarch64_link_hash_entry
), AARCH64_ELF_DATA
))
2586 ret
->plt_header_size
= PLT_ENTRY_SIZE
;
2587 ret
->plt_entry_size
= PLT_SMALL_ENTRY_SIZE
;
2589 ret
->dt_tlsdesc_got
= (bfd_vma
) - 1;
2591 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
,
2592 sizeof (struct elf_aarch64_stub_hash_entry
)))
2594 _bfd_elf_link_hash_table_free (abfd
);
2598 ret
->loc_hash_table
= htab_try_create (1024,
2599 elfNN_aarch64_local_htab_hash
,
2600 elfNN_aarch64_local_htab_eq
,
2602 ret
->loc_hash_memory
= objalloc_create ();
2603 if (!ret
->loc_hash_table
|| !ret
->loc_hash_memory
)
2605 elfNN_aarch64_link_hash_table_free (abfd
);
2608 ret
->root
.root
.hash_table_free
= elfNN_aarch64_link_hash_table_free
;
2610 return &ret
->root
.root
;
2614 aarch64_relocate (unsigned int r_type
, bfd
*input_bfd
, asection
*input_section
,
2615 bfd_vma offset
, bfd_vma value
)
2617 reloc_howto_type
*howto
;
2620 howto
= elfNN_aarch64_howto_from_type (r_type
);
2621 place
= (input_section
->output_section
->vma
+ input_section
->output_offset
2624 r_type
= elfNN_aarch64_bfd_reloc_from_type (r_type
);
2625 value
= _bfd_aarch64_elf_resolve_relocation (r_type
, place
, value
, 0, FALSE
);
2626 return _bfd_aarch64_elf_put_addend (input_bfd
,
2627 input_section
->contents
+ offset
, r_type
,
2631 static enum elf_aarch64_stub_type
2632 aarch64_select_branch_stub (bfd_vma value
, bfd_vma place
)
2634 if (aarch64_valid_for_adrp_p (value
, place
))
2635 return aarch64_stub_adrp_branch
;
2636 return aarch64_stub_long_branch
;
2639 /* Determine the type of stub needed, if any, for a call. */
2641 static enum elf_aarch64_stub_type
2642 aarch64_type_of_stub (asection
*input_sec
,
2643 const Elf_Internal_Rela
*rel
,
2645 unsigned char st_type
,
2646 bfd_vma destination
)
2649 bfd_signed_vma branch_offset
;
2650 unsigned int r_type
;
2651 enum elf_aarch64_stub_type stub_type
= aarch64_stub_none
;
2653 if (st_type
!= STT_FUNC
2654 && (sym_sec
== input_sec
))
2657 /* Determine where the call point is. */
2658 location
= (input_sec
->output_offset
2659 + input_sec
->output_section
->vma
+ rel
->r_offset
);
2661 branch_offset
= (bfd_signed_vma
) (destination
- location
);
2663 r_type
= ELFNN_R_TYPE (rel
->r_info
);
2665 /* We don't want to redirect any old unconditional jump in this way,
2666 only one which is being used for a sibcall, where it is
2667 acceptable for the IP0 and IP1 registers to be clobbered. */
2668 if ((r_type
== AARCH64_R (CALL26
) || r_type
== AARCH64_R (JUMP26
))
2669 && (branch_offset
> AARCH64_MAX_FWD_BRANCH_OFFSET
2670 || branch_offset
< AARCH64_MAX_BWD_BRANCH_OFFSET
))
2672 stub_type
= aarch64_stub_long_branch
;
2678 /* Build a name for an entry in the stub hash table. */
2681 elfNN_aarch64_stub_name (const asection
*input_section
,
2682 const asection
*sym_sec
,
2683 const struct elf_aarch64_link_hash_entry
*hash
,
2684 const Elf_Internal_Rela
*rel
)
2691 len
= 8 + 1 + strlen (hash
->root
.root
.root
.string
) + 1 + 16 + 1;
2692 stub_name
= bfd_malloc (len
);
2693 if (stub_name
!= NULL
)
2694 snprintf (stub_name
, len
, "%08x_%s+%" BFD_VMA_FMT
"x",
2695 (unsigned int) input_section
->id
,
2696 hash
->root
.root
.root
.string
,
2701 len
= 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2702 stub_name
= bfd_malloc (len
);
2703 if (stub_name
!= NULL
)
2704 snprintf (stub_name
, len
, "%08x_%x:%x+%" BFD_VMA_FMT
"x",
2705 (unsigned int) input_section
->id
,
2706 (unsigned int) sym_sec
->id
,
2707 (unsigned int) ELFNN_R_SYM (rel
->r_info
),
2714 /* Look up an entry in the stub hash. Stub entries are cached because
2715 creating the stub name takes a bit of time. */
2717 static struct elf_aarch64_stub_hash_entry
*
2718 elfNN_aarch64_get_stub_entry (const asection
*input_section
,
2719 const asection
*sym_sec
,
2720 struct elf_link_hash_entry
*hash
,
2721 const Elf_Internal_Rela
*rel
,
2722 struct elf_aarch64_link_hash_table
*htab
)
2724 struct elf_aarch64_stub_hash_entry
*stub_entry
;
2725 struct elf_aarch64_link_hash_entry
*h
=
2726 (struct elf_aarch64_link_hash_entry
*) hash
;
2727 const asection
*id_sec
;
2729 if ((input_section
->flags
& SEC_CODE
) == 0)
2732 /* If this input section is part of a group of sections sharing one
2733 stub section, then use the id of the first section in the group.
2734 Stub names need to include a section id, as there may well be
2735 more than one stub used to reach say, printf, and we need to
2736 distinguish between them. */
2737 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
2739 if (h
!= NULL
&& h
->stub_cache
!= NULL
2740 && h
->stub_cache
->h
== h
&& h
->stub_cache
->id_sec
== id_sec
)
2742 stub_entry
= h
->stub_cache
;
2748 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, h
, rel
);
2749 if (stub_name
== NULL
)
2752 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
2753 stub_name
, FALSE
, FALSE
);
2755 h
->stub_cache
= stub_entry
;
2764 /* Create a stub section. */
2767 _bfd_aarch64_create_stub_section (asection
*section
,
2768 struct elf_aarch64_link_hash_table
*htab
)
2774 namelen
= strlen (section
->name
);
2775 len
= namelen
+ sizeof (STUB_SUFFIX
);
2776 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
2780 memcpy (s_name
, section
->name
, namelen
);
2781 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
2782 return (*htab
->add_stub_section
) (s_name
, section
);
2786 /* Find or create a stub section for a link section.
2788 Fix or create the stub section used to collect stubs attached to
2789 the specified link section. */
2792 _bfd_aarch64_get_stub_for_link_section (asection
*link_section
,
2793 struct elf_aarch64_link_hash_table
*htab
)
2795 if (htab
->stub_group
[link_section
->id
].stub_sec
== NULL
)
2796 htab
->stub_group
[link_section
->id
].stub_sec
2797 = _bfd_aarch64_create_stub_section (link_section
, htab
);
2798 return htab
->stub_group
[link_section
->id
].stub_sec
;
2802 /* Find or create a stub section in the stub group for an input
2806 _bfd_aarch64_create_or_find_stub_sec (asection
*section
,
2807 struct elf_aarch64_link_hash_table
*htab
)
2809 asection
*link_sec
= htab
->stub_group
[section
->id
].link_sec
;
2810 return _bfd_aarch64_get_stub_for_link_section (link_sec
, htab
);
2814 /* Add a new stub entry in the stub group associated with an input
2815 section to the stub hash. Not all fields of the new stub entry are
2818 static struct elf_aarch64_stub_hash_entry
*
2819 _bfd_aarch64_add_stub_entry_in_group (const char *stub_name
,
2821 struct elf_aarch64_link_hash_table
*htab
)
2825 struct elf_aarch64_stub_hash_entry
*stub_entry
;
2827 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
2828 stub_sec
= _bfd_aarch64_create_or_find_stub_sec (section
, htab
);
2830 /* Enter this entry into the linker stub hash table. */
2831 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
2833 if (stub_entry
== NULL
)
2835 (*_bfd_error_handler
) (_("%s: cannot create stub entry %s"),
2836 section
->owner
, stub_name
);
2840 stub_entry
->stub_sec
= stub_sec
;
2841 stub_entry
->stub_offset
= 0;
2842 stub_entry
->id_sec
= link_sec
;
2847 /* Add a new stub entry in the final stub section to the stub hash.
2848 Not all fields of the new stub entry are initialised. */
2850 static struct elf_aarch64_stub_hash_entry
*
2851 _bfd_aarch64_add_stub_entry_after (const char *stub_name
,
2852 asection
*link_section
,
2853 struct elf_aarch64_link_hash_table
*htab
)
2856 struct elf_aarch64_stub_hash_entry
*stub_entry
;
2858 stub_sec
= _bfd_aarch64_get_stub_for_link_section (link_section
, htab
);
2859 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
2861 if (stub_entry
== NULL
)
2863 (*_bfd_error_handler
) (_("cannot create stub entry %s"), stub_name
);
2867 stub_entry
->stub_sec
= stub_sec
;
2868 stub_entry
->stub_offset
= 0;
2869 stub_entry
->id_sec
= link_section
;
2876 aarch64_build_one_stub (struct bfd_hash_entry
*gen_entry
,
2877 void *in_arg ATTRIBUTE_UNUSED
)
2879 struct elf_aarch64_stub_hash_entry
*stub_entry
;
2884 bfd_vma veneered_insn_loc
;
2885 bfd_vma veneer_entry_loc
;
2886 bfd_signed_vma branch_offset
= 0;
2887 unsigned int template_size
;
2888 const uint32_t *template;
2891 /* Massage our args to the form they really have. */
2892 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
2894 stub_sec
= stub_entry
->stub_sec
;
2896 /* Make a note of the offset within the stubs for this entry. */
2897 stub_entry
->stub_offset
= stub_sec
->size
;
2898 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
2900 stub_bfd
= stub_sec
->owner
;
2902 /* This is the address of the stub destination. */
2903 sym_value
= (stub_entry
->target_value
2904 + stub_entry
->target_section
->output_offset
2905 + stub_entry
->target_section
->output_section
->vma
);
2907 if (stub_entry
->stub_type
== aarch64_stub_long_branch
)
2909 bfd_vma place
= (stub_entry
->stub_offset
+ stub_sec
->output_section
->vma
2910 + stub_sec
->output_offset
);
2912 /* See if we can relax the stub. */
2913 if (aarch64_valid_for_adrp_p (sym_value
, place
))
2914 stub_entry
->stub_type
= aarch64_select_branch_stub (sym_value
, place
);
2917 switch (stub_entry
->stub_type
)
2919 case aarch64_stub_adrp_branch
:
2920 template = aarch64_adrp_branch_stub
;
2921 template_size
= sizeof (aarch64_adrp_branch_stub
);
2923 case aarch64_stub_long_branch
:
2924 template = aarch64_long_branch_stub
;
2925 template_size
= sizeof (aarch64_long_branch_stub
);
2927 case aarch64_stub_erratum_835769_veneer
:
2928 template = aarch64_erratum_835769_stub
;
2929 template_size
= sizeof (aarch64_erratum_835769_stub
);
2931 case aarch64_stub_erratum_843419_veneer
:
2932 template = aarch64_erratum_843419_stub
;
2933 template_size
= sizeof (aarch64_erratum_843419_stub
);
2939 for (i
= 0; i
< (template_size
/ sizeof template[0]); i
++)
2941 bfd_putl32 (template[i
], loc
);
2945 template_size
= (template_size
+ 7) & ~7;
2946 stub_sec
->size
+= template_size
;
2948 switch (stub_entry
->stub_type
)
2950 case aarch64_stub_adrp_branch
:
2951 if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21
), stub_bfd
, stub_sec
,
2952 stub_entry
->stub_offset
, sym_value
))
2953 /* The stub would not have been relaxed if the offset was out
2957 if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC
), stub_bfd
, stub_sec
,
2958 stub_entry
->stub_offset
+ 4, sym_value
))
2962 case aarch64_stub_long_branch
:
2963 /* We want the value relative to the address 12 bytes back from the
2965 if (aarch64_relocate (AARCH64_R (PRELNN
), stub_bfd
, stub_sec
,
2966 stub_entry
->stub_offset
+ 16, sym_value
+ 12))
2970 case aarch64_stub_erratum_835769_veneer
:
2971 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
2972 + stub_entry
->target_section
->output_offset
2973 + stub_entry
->target_value
;
2974 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
2975 + stub_entry
->stub_sec
->output_offset
2976 + stub_entry
->stub_offset
;
2977 branch_offset
= veneered_insn_loc
- veneer_entry_loc
;
2978 branch_offset
>>= 2;
2979 branch_offset
&= 0x3ffffff;
2980 bfd_putl32 (stub_entry
->veneered_insn
,
2981 stub_sec
->contents
+ stub_entry
->stub_offset
);
2982 bfd_putl32 (template[1] | branch_offset
,
2983 stub_sec
->contents
+ stub_entry
->stub_offset
+ 4);
2986 case aarch64_stub_erratum_843419_veneer
:
2987 if (aarch64_relocate (AARCH64_R (JUMP26
), stub_bfd
, stub_sec
,
2988 stub_entry
->stub_offset
+ 4, sym_value
+ 4))
2999 /* As above, but don't actually build the stub. Just bump offset so
3000 we know stub section sizes. */
3003 aarch64_size_one_stub (struct bfd_hash_entry
*gen_entry
,
3004 void *in_arg ATTRIBUTE_UNUSED
)
3006 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3009 /* Massage our args to the form they really have. */
3010 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
3012 switch (stub_entry
->stub_type
)
3014 case aarch64_stub_adrp_branch
:
3015 size
= sizeof (aarch64_adrp_branch_stub
);
3017 case aarch64_stub_long_branch
:
3018 size
= sizeof (aarch64_long_branch_stub
);
3020 case aarch64_stub_erratum_835769_veneer
:
3021 size
= sizeof (aarch64_erratum_835769_stub
);
3023 case aarch64_stub_erratum_843419_veneer
:
3024 size
= sizeof (aarch64_erratum_843419_stub
);
3030 size
= (size
+ 7) & ~7;
3031 stub_entry
->stub_sec
->size
+= size
;
3035 /* External entry points for sizing and building linker stubs. */
3037 /* Set up various things so that we can make a list of input sections
3038 for each output section included in the link. Returns -1 on error,
3039 0 when no stubs will be needed, and 1 on success. */
3042 elfNN_aarch64_setup_section_lists (bfd
*output_bfd
,
3043 struct bfd_link_info
*info
)
3046 unsigned int bfd_count
;
3047 unsigned int top_id
, top_index
;
3049 asection
**input_list
, **list
;
3051 struct elf_aarch64_link_hash_table
*htab
=
3052 elf_aarch64_hash_table (info
);
3054 if (!is_elf_hash_table (htab
))
3057 /* Count the number of input BFDs and find the top input section id. */
3058 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3059 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
3062 for (section
= input_bfd
->sections
;
3063 section
!= NULL
; section
= section
->next
)
3065 if (top_id
< section
->id
)
3066 top_id
= section
->id
;
3069 htab
->bfd_count
= bfd_count
;
3071 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3072 htab
->stub_group
= bfd_zmalloc (amt
);
3073 if (htab
->stub_group
== NULL
)
3076 /* We can't use output_bfd->section_count here to find the top output
3077 section index as some sections may have been removed, and
3078 _bfd_strip_section_from_output doesn't renumber the indices. */
3079 for (section
= output_bfd
->sections
, top_index
= 0;
3080 section
!= NULL
; section
= section
->next
)
3082 if (top_index
< section
->index
)
3083 top_index
= section
->index
;
3086 htab
->top_index
= top_index
;
3087 amt
= sizeof (asection
*) * (top_index
+ 1);
3088 input_list
= bfd_malloc (amt
);
3089 htab
->input_list
= input_list
;
3090 if (input_list
== NULL
)
3093 /* For sections we aren't interested in, mark their entries with a
3094 value we can check later. */
3095 list
= input_list
+ top_index
;
3097 *list
= bfd_abs_section_ptr
;
3098 while (list
-- != input_list
);
3100 for (section
= output_bfd
->sections
;
3101 section
!= NULL
; section
= section
->next
)
3103 if ((section
->flags
& SEC_CODE
) != 0)
3104 input_list
[section
->index
] = NULL
;
3110 /* Used by elfNN_aarch64_next_input_section and group_sections. */
3111 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3113 /* The linker repeatedly calls this function for each input section,
3114 in the order that input sections are linked into output sections.
3115 Build lists of input sections to determine groupings between which
3116 we may insert linker stubs. */
3119 elfNN_aarch64_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
3121 struct elf_aarch64_link_hash_table
*htab
=
3122 elf_aarch64_hash_table (info
);
3124 if (isec
->output_section
->index
<= htab
->top_index
)
3126 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
3128 if (*list
!= bfd_abs_section_ptr
)
3130 /* Steal the link_sec pointer for our list. */
3131 /* This happens to make the list in reverse order,
3132 which is what we want. */
3133 PREV_SEC (isec
) = *list
;
3139 /* See whether we can group stub sections together. Grouping stub
3140 sections may result in fewer stubs. More importantly, we need to
3141 put all .init* and .fini* stubs at the beginning of the .init or
3142 .fini output sections respectively, because glibc splits the
3143 _init and _fini functions into multiple parts. Putting a stub in
3144 the middle of a function is not a good idea. */
3147 group_sections (struct elf_aarch64_link_hash_table
*htab
,
3148 bfd_size_type stub_group_size
,
3149 bfd_boolean stubs_always_before_branch
)
3151 asection
**list
= htab
->input_list
+ htab
->top_index
;
3155 asection
*tail
= *list
;
3157 if (tail
== bfd_abs_section_ptr
)
3160 while (tail
!= NULL
)
3164 bfd_size_type total
;
3168 while ((prev
= PREV_SEC (curr
)) != NULL
3169 && ((total
+= curr
->output_offset
- prev
->output_offset
)
3173 /* OK, the size from the start of CURR to the end is less
3174 than stub_group_size and thus can be handled by one stub
3175 section. (Or the tail section is itself larger than
3176 stub_group_size, in which case we may be toast.)
3177 We should really be keeping track of the total size of
3178 stubs added here, as stubs contribute to the final output
3182 prev
= PREV_SEC (tail
);
3183 /* Set up this stub group. */
3184 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3186 while (tail
!= curr
&& (tail
= prev
) != NULL
);
3188 /* But wait, there's more! Input sections up to stub_group_size
3189 bytes before the stub section can be handled by it too. */
3190 if (!stubs_always_before_branch
)
3194 && ((total
+= tail
->output_offset
- prev
->output_offset
)
3198 prev
= PREV_SEC (tail
);
3199 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3205 while (list
-- != htab
->input_list
);
3207 free (htab
->input_list
);
3212 #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3214 #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3215 #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3216 #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3217 #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3218 #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3219 #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3221 #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3222 #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3223 #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3224 #define AARCH64_ZR 0x1f
3226 /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3227 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3229 #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3230 #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3231 #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3232 #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3233 #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3234 #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3235 #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3236 #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3237 #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3238 #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3239 #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3240 #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3241 #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3242 #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3243 #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3244 #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3245 #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3246 #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3248 /* Classify an INSN if it is indeed a load/store.
3250 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3252 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3255 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned.
3260 aarch64_mem_op_p (uint32_t insn
, unsigned int *rt
, unsigned int *rt2
,
3261 bfd_boolean
*pair
, bfd_boolean
*load
)
3269 /* Bail out quickly if INSN doesn't fall into the the load-store
3271 if (!AARCH64_LDST (insn
))
3276 if (AARCH64_LDST_EX (insn
))
3278 *rt
= AARCH64_RT (insn
);
3280 if (AARCH64_BIT (insn
, 21) == 1)
3283 *rt2
= AARCH64_RT2 (insn
);
3285 *load
= AARCH64_LD (insn
);
3288 else if (AARCH64_LDST_NAP (insn
)
3289 || AARCH64_LDSTP_PI (insn
)
3290 || AARCH64_LDSTP_O (insn
)
3291 || AARCH64_LDSTP_PRE (insn
))
3294 *rt
= AARCH64_RT (insn
);
3295 *rt2
= AARCH64_RT2 (insn
);
3296 *load
= AARCH64_LD (insn
);
3299 else if (AARCH64_LDST_PCREL (insn
)
3300 || AARCH64_LDST_UI (insn
)
3301 || AARCH64_LDST_PIIMM (insn
)
3302 || AARCH64_LDST_U (insn
)
3303 || AARCH64_LDST_PREIMM (insn
)
3304 || AARCH64_LDST_RO (insn
)
3305 || AARCH64_LDST_UIMM (insn
))
3307 *rt
= AARCH64_RT (insn
);
3309 if (AARCH64_LDST_PCREL (insn
))
3311 opc
= AARCH64_BITS (insn
, 22, 2);
3312 v
= AARCH64_BIT (insn
, 26);
3313 opc_v
= opc
| (v
<< 2);
3314 *load
= (opc_v
== 1 || opc_v
== 2 || opc_v
== 3
3315 || opc_v
== 5 || opc_v
== 7);
3318 else if (AARCH64_LDST_SIMD_M (insn
)
3319 || AARCH64_LDST_SIMD_M_PI (insn
))
3321 *rt
= AARCH64_RT (insn
);
3322 *load
= AARCH64_BIT (insn
, 22);
3323 opcode
= (insn
>> 12) & 0xf;
3350 else if (AARCH64_LDST_SIMD_S (insn
)
3351 || AARCH64_LDST_SIMD_S_PI (insn
))
3353 *rt
= AARCH64_RT (insn
);
3354 r
= (insn
>> 21) & 1;
3355 *load
= AARCH64_BIT (insn
, 22);
3356 opcode
= (insn
>> 13) & 0x7;
3368 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3376 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3388 /* Return TRUE if INSN is multiply-accumulate. */
3391 aarch64_mlxl_p (uint32_t insn
)
3393 uint32_t op31
= AARCH64_OP31 (insn
);
3395 if (AARCH64_MAC (insn
)
3396 && (op31
== 0 || op31
== 1 || op31
== 5)
3397 /* Exclude MUL instructions which are encoded as a multiple accumulate
3399 && AARCH64_RA (insn
) != AARCH64_ZR
)
3405 /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3406 it is possible for a 64-bit multiply-accumulate instruction to generate an
3407 incorrect result. The details are quite complex and hard to
3408 determine statically, since branches in the code may exist in some
3409 circumstances, but all cases end with a memory (load, store, or
3410 prefetch) instruction followed immediately by the multiply-accumulate
3411 operation. We employ a linker patching technique, by moving the potentially
3412 affected multiply-accumulate instruction into a patch region and replacing
3413 the original instruction with a branch to the patch. This function checks
3414 if INSN_1 is the memory operation followed by a multiply-accumulate
3415 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3416 if INSN_1 and INSN_2 are safe. */
3419 aarch64_erratum_sequence (uint32_t insn_1
, uint32_t insn_2
)
3429 if (aarch64_mlxl_p (insn_2
)
3430 && aarch64_mem_op_p (insn_1
, &rt
, &rt2
, &pair
, &load
))
3432 /* Any SIMD memory op is independent of the subsequent MLA
3433 by definition of the erratum. */
3434 if (AARCH64_BIT (insn_1
, 26))
3437 /* If not SIMD, check for integer memory ops and MLA relationship. */
3438 rn
= AARCH64_RN (insn_2
);
3439 ra
= AARCH64_RA (insn_2
);
3440 rm
= AARCH64_RM (insn_2
);
3442 /* If this is a load and there's a true(RAW) dependency, we are safe
3443 and this is not an erratum sequence. */
3445 (rt
== rn
|| rt
== rm
|| rt
== ra
3446 || (pair
&& (rt2
== rn
|| rt2
== rm
|| rt2
== ra
))))
3449 /* We conservatively put out stubs for all other cases (including
3457 /* Used to order a list of mapping symbols by address. */
3460 elf_aarch64_compare_mapping (const void *a
, const void *b
)
3462 const elf_aarch64_section_map
*amap
= (const elf_aarch64_section_map
*) a
;
3463 const elf_aarch64_section_map
*bmap
= (const elf_aarch64_section_map
*) b
;
3465 if (amap
->vma
> bmap
->vma
)
3467 else if (amap
->vma
< bmap
->vma
)
3469 else if (amap
->type
> bmap
->type
)
3470 /* Ensure results do not depend on the host qsort for objects with
3471 multiple mapping symbols at the same address by sorting on type
3474 else if (amap
->type
< bmap
->type
)
3482 _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes
)
3484 char *stub_name
= (char *) bfd_malloc
3485 (strlen ("__erratum_835769_veneer_") + 16);
3486 sprintf (stub_name
,"__erratum_835769_veneer_%d", num_fixes
);
3490 /* Scan for Cortex-A53 erratum 835769 sequence.
3492 Return TRUE else FALSE on abnormal termination. */
3495 _bfd_aarch64_erratum_835769_scan (bfd
*input_bfd
,
3496 struct bfd_link_info
*info
,
3497 unsigned int *num_fixes_p
)
3500 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3501 unsigned int num_fixes
= *num_fixes_p
;
3506 for (section
= input_bfd
->sections
;
3508 section
= section
->next
)
3510 bfd_byte
*contents
= NULL
;
3511 struct _aarch64_elf_section_data
*sec_data
;
3514 if (elf_section_type (section
) != SHT_PROGBITS
3515 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
3516 || (section
->flags
& SEC_EXCLUDE
) != 0
3517 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
3518 || (section
->output_section
== bfd_abs_section_ptr
))
3521 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
3522 contents
= elf_section_data (section
)->this_hdr
.contents
;
3523 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
3526 sec_data
= elf_aarch64_section_data (section
);
3528 qsort (sec_data
->map
, sec_data
->mapcount
,
3529 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
3531 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3533 unsigned int span_start
= sec_data
->map
[span
].vma
;
3534 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
3535 ? sec_data
->map
[0].vma
+ section
->size
3536 : sec_data
->map
[span
+ 1].vma
);
3538 char span_type
= sec_data
->map
[span
].type
;
3540 if (span_type
== 'd')
3543 for (i
= span_start
; i
+ 4 < span_end
; i
+= 4)
3545 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
3546 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
3548 if (aarch64_erratum_sequence (insn_1
, insn_2
))
3550 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3551 char *stub_name
= _bfd_aarch64_erratum_835769_stub_name (num_fixes
);
3555 stub_entry
= _bfd_aarch64_add_stub_entry_in_group (stub_name
,
3561 stub_entry
->stub_type
= aarch64_stub_erratum_835769_veneer
;
3562 stub_entry
->target_section
= section
;
3563 stub_entry
->target_value
= i
+ 4;
3564 stub_entry
->veneered_insn
= insn_2
;
3565 stub_entry
->output_name
= stub_name
;
3570 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
3574 *num_fixes_p
= num_fixes
;
3580 /* Test if instruction INSN is ADRP. */
3583 _bfd_aarch64_adrp_p (uint32_t insn
)
3585 return ((insn
& 0x9f000000) == 0x90000000);
3589 /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
3592 _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1
, uint32_t insn_2
,
3600 return (aarch64_mem_op_p (insn_2
, &rt
, &rt2
, &pair
, &load
)
3603 && AARCH64_LDST_UIMM (insn_3
)
3604 && AARCH64_RN (insn_3
) == AARCH64_RD (insn_1
));
3608 /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
3610 Return TRUE if section CONTENTS at offset I contains one of the
3611 erratum 843419 sequences, otherwise return FALSE. If a sequence is
3612 seen set P_VENEER_I to the offset of the final LOAD/STORE
3613 instruction in the sequence.
3617 _bfd_aarch64_erratum_843419_p (bfd_byte
*contents
, bfd_vma vma
,
3618 bfd_vma i
, bfd_vma span_end
,
3619 bfd_vma
*p_veneer_i
)
3621 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
3623 if (!_bfd_aarch64_adrp_p (insn_1
))
3626 if (span_end
< i
+ 12)
3629 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
3630 uint32_t insn_3
= bfd_getl32 (contents
+ i
+ 8);
3632 if ((vma
& 0xfff) != 0xff8 && (vma
& 0xfff) != 0xffc)
3635 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_3
))
3637 *p_veneer_i
= i
+ 8;
3641 if (span_end
< i
+ 16)
3644 uint32_t insn_4
= bfd_getl32 (contents
+ i
+ 12);
3646 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_4
))
3648 *p_veneer_i
= i
+ 12;
3656 /* Resize all stub sections. */
3659 _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table
*htab
)
3663 /* OK, we've added some stubs. Find out the new size of the
3665 for (section
= htab
->stub_bfd
->sections
;
3666 section
!= NULL
; section
= section
->next
)
3668 /* Ignore non-stub sections. */
3669 if (!strstr (section
->name
, STUB_SUFFIX
))
3674 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_size_one_stub
, htab
);
3676 for (section
= htab
->stub_bfd
->sections
;
3677 section
!= NULL
; section
= section
->next
)
3679 if (!strstr (section
->name
, STUB_SUFFIX
))
3685 /* Ensure all stub sections have a size which is a multiple of
3686 4096. This is important in order to ensure that the insertion
3687 of stub sections does not in itself move existing code around
3688 in such a way that new errata sequences are created. */
3689 if (htab
->fix_erratum_843419
)
3691 section
->size
= BFD_ALIGN (section
->size
, 0x1000);
3696 /* Construct an erratum 843419 workaround stub name.
3700 _bfd_aarch64_erratum_843419_stub_name (asection
*input_section
,
3703 const bfd_size_type len
= 8 + 4 + 1 + 8 + 1 + 16 + 1;
3704 char *stub_name
= bfd_malloc (len
);
3706 if (stub_name
!= NULL
)
3707 snprintf (stub_name
, len
, "e843419@%04x_%08x_%" BFD_VMA_FMT
"x",
3708 input_section
->owner
->id
,
3714 /* Build a stub_entry structure describing an 843419 fixup.
3716 The stub_entry constructed is populated with the bit pattern INSN
3717 of the instruction located at OFFSET within input SECTION.
3719 Returns TRUE on success. */
3722 _bfd_aarch64_erratum_843419_fixup (uint32_t insn
,
3723 bfd_vma adrp_offset
,
3724 bfd_vma ldst_offset
,
3726 struct bfd_link_info
*info
)
3728 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3730 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3732 stub_name
= _bfd_aarch64_erratum_843419_stub_name (section
, ldst_offset
);
3733 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3741 /* We always place an 843419 workaround veneer in the stub section
3742 attached to the input section in which an erratum sequence has
3743 been found. This ensures that later in the link process (in
3744 elfNN_aarch64_write_section) when we copy the veneered
3745 instruction from the input section into the stub section the
3746 copied instruction will have had any relocations applied to it.
3747 If we placed workaround veneers in any other stub section then we
3748 could not assume that all relocations have been processed on the
3749 corresponding input section at the point we output the stub
3753 stub_entry
= _bfd_aarch64_add_stub_entry_after (stub_name
, section
, htab
);
3754 if (stub_entry
== NULL
)
3760 stub_entry
->adrp_offset
= adrp_offset
;
3761 stub_entry
->target_value
= ldst_offset
;
3762 stub_entry
->target_section
= section
;
3763 stub_entry
->stub_type
= aarch64_stub_erratum_843419_veneer
;
3764 stub_entry
->veneered_insn
= insn
;
3765 stub_entry
->output_name
= stub_name
;
3771 /* Scan an input section looking for the signature of erratum 843419.
3773 Scans input SECTION in INPUT_BFD looking for erratum 843419
3774 signatures, for each signature found a stub_entry is created
3775 describing the location of the erratum for subsequent fixup.
3777 Return TRUE on successful scan, FALSE on failure to scan.
3781 _bfd_aarch64_erratum_843419_scan (bfd
*input_bfd
, asection
*section
,
3782 struct bfd_link_info
*info
)
3784 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3789 if (elf_section_type (section
) != SHT_PROGBITS
3790 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
3791 || (section
->flags
& SEC_EXCLUDE
) != 0
3792 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
3793 || (section
->output_section
== bfd_abs_section_ptr
))
3798 bfd_byte
*contents
= NULL
;
3799 struct _aarch64_elf_section_data
*sec_data
;
3802 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
3803 contents
= elf_section_data (section
)->this_hdr
.contents
;
3804 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
3807 sec_data
= elf_aarch64_section_data (section
);
3809 qsort (sec_data
->map
, sec_data
->mapcount
,
3810 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
3812 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3814 unsigned int span_start
= sec_data
->map
[span
].vma
;
3815 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
3816 ? sec_data
->map
[0].vma
+ section
->size
3817 : sec_data
->map
[span
+ 1].vma
);
3819 char span_type
= sec_data
->map
[span
].type
;
3821 if (span_type
== 'd')
3824 for (i
= span_start
; i
+ 8 < span_end
; i
+= 4)
3826 bfd_vma vma
= (section
->output_section
->vma
3827 + section
->output_offset
3831 if (_bfd_aarch64_erratum_843419_p
3832 (contents
, vma
, i
, span_end
, &veneer_i
))
3834 uint32_t insn
= bfd_getl32 (contents
+ veneer_i
);
3836 if (!_bfd_aarch64_erratum_843419_fixup (insn
, i
, veneer_i
,
3843 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
3852 /* Determine and set the size of the stub section for a final link.
3854 The basic idea here is to examine all the relocations looking for
3855 PC-relative calls to a target that is unreachable with a "bl"
3859 elfNN_aarch64_size_stubs (bfd
*output_bfd
,
3861 struct bfd_link_info
*info
,
3862 bfd_signed_vma group_size
,
3863 asection
* (*add_stub_section
) (const char *,
3865 void (*layout_sections_again
) (void))
3867 bfd_size_type stub_group_size
;
3868 bfd_boolean stubs_always_before_branch
;
3869 bfd_boolean stub_changed
= FALSE
;
3870 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3871 unsigned int num_erratum_835769_fixes
= 0;
3873 /* Propagate mach to stub bfd, because it may not have been
3874 finalized when we created stub_bfd. */
3875 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
3876 bfd_get_mach (output_bfd
));
3878 /* Stash our params away. */
3879 htab
->stub_bfd
= stub_bfd
;
3880 htab
->add_stub_section
= add_stub_section
;
3881 htab
->layout_sections_again
= layout_sections_again
;
3882 stubs_always_before_branch
= group_size
< 0;
3884 stub_group_size
= -group_size
;
3886 stub_group_size
= group_size
;
3888 if (stub_group_size
== 1)
3890 /* Default values. */
3891 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
3892 stub_group_size
= 127 * 1024 * 1024;
3895 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
3897 (*htab
->layout_sections_again
) ();
3899 if (htab
->fix_erratum_835769
)
3903 for (input_bfd
= info
->input_bfds
;
3904 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
3905 if (!_bfd_aarch64_erratum_835769_scan (input_bfd
, info
,
3906 &num_erratum_835769_fixes
))
3909 _bfd_aarch64_resize_stubs (htab
);
3910 (*htab
->layout_sections_again
) ();
3913 if (htab
->fix_erratum_843419
)
3917 for (input_bfd
= info
->input_bfds
;
3919 input_bfd
= input_bfd
->link
.next
)
3923 for (section
= input_bfd
->sections
;
3925 section
= section
->next
)
3926 if (!_bfd_aarch64_erratum_843419_scan (input_bfd
, section
, info
))
3930 _bfd_aarch64_resize_stubs (htab
);
3931 (*htab
->layout_sections_again
) ();
3938 for (input_bfd
= info
->input_bfds
;
3939 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
3941 Elf_Internal_Shdr
*symtab_hdr
;
3943 Elf_Internal_Sym
*local_syms
= NULL
;
3945 /* We'll need the symbol table in a second. */
3946 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3947 if (symtab_hdr
->sh_info
== 0)
3950 /* Walk over each section attached to the input bfd. */
3951 for (section
= input_bfd
->sections
;
3952 section
!= NULL
; section
= section
->next
)
3954 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
3956 /* If there aren't any relocs, then there's nothing more
3958 if ((section
->flags
& SEC_RELOC
) == 0
3959 || section
->reloc_count
== 0
3960 || (section
->flags
& SEC_CODE
) == 0)
3963 /* If this section is a link-once section that will be
3964 discarded, then don't create any stubs. */
3965 if (section
->output_section
== NULL
3966 || section
->output_section
->owner
!= output_bfd
)
3969 /* Get the relocs. */
3971 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
3972 NULL
, info
->keep_memory
);
3973 if (internal_relocs
== NULL
)
3974 goto error_ret_free_local
;
3976 /* Now examine each relocation. */
3977 irela
= internal_relocs
;
3978 irelaend
= irela
+ section
->reloc_count
;
3979 for (; irela
< irelaend
; irela
++)
3981 unsigned int r_type
, r_indx
;
3982 enum elf_aarch64_stub_type stub_type
;
3983 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3986 bfd_vma destination
;
3987 struct elf_aarch64_link_hash_entry
*hash
;
3988 const char *sym_name
;
3990 const asection
*id_sec
;
3991 unsigned char st_type
;
3994 r_type
= ELFNN_R_TYPE (irela
->r_info
);
3995 r_indx
= ELFNN_R_SYM (irela
->r_info
);
3997 if (r_type
>= (unsigned int) R_AARCH64_end
)
3999 bfd_set_error (bfd_error_bad_value
);
4000 error_ret_free_internal
:
4001 if (elf_section_data (section
)->relocs
== NULL
)
4002 free (internal_relocs
);
4003 goto error_ret_free_local
;
4006 /* Only look for stubs on unconditional branch and
4007 branch and link instructions. */
4008 if (r_type
!= (unsigned int) AARCH64_R (CALL26
)
4009 && r_type
!= (unsigned int) AARCH64_R (JUMP26
))
4012 /* Now determine the call target, its name, value,
4019 if (r_indx
< symtab_hdr
->sh_info
)
4021 /* It's a local symbol. */
4022 Elf_Internal_Sym
*sym
;
4023 Elf_Internal_Shdr
*hdr
;
4025 if (local_syms
== NULL
)
4028 = (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4029 if (local_syms
== NULL
)
4031 = bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
4032 symtab_hdr
->sh_info
, 0,
4034 if (local_syms
== NULL
)
4035 goto error_ret_free_internal
;
4038 sym
= local_syms
+ r_indx
;
4039 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
4040 sym_sec
= hdr
->bfd_section
;
4042 /* This is an undefined symbol. It can never
4046 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
4047 sym_value
= sym
->st_value
;
4048 destination
= (sym_value
+ irela
->r_addend
4049 + sym_sec
->output_offset
4050 + sym_sec
->output_section
->vma
);
4051 st_type
= ELF_ST_TYPE (sym
->st_info
);
4053 = bfd_elf_string_from_elf_section (input_bfd
,
4054 symtab_hdr
->sh_link
,
4061 e_indx
= r_indx
- symtab_hdr
->sh_info
;
4062 hash
= ((struct elf_aarch64_link_hash_entry
*)
4063 elf_sym_hashes (input_bfd
)[e_indx
]);
4065 while (hash
->root
.root
.type
== bfd_link_hash_indirect
4066 || hash
->root
.root
.type
== bfd_link_hash_warning
)
4067 hash
= ((struct elf_aarch64_link_hash_entry
*)
4068 hash
->root
.root
.u
.i
.link
);
4070 if (hash
->root
.root
.type
== bfd_link_hash_defined
4071 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
4073 struct elf_aarch64_link_hash_table
*globals
=
4074 elf_aarch64_hash_table (info
);
4075 sym_sec
= hash
->root
.root
.u
.def
.section
;
4076 sym_value
= hash
->root
.root
.u
.def
.value
;
4077 /* For a destination in a shared library,
4078 use the PLT stub as target address to
4079 decide whether a branch stub is
4081 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4082 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4084 sym_sec
= globals
->root
.splt
;
4085 sym_value
= hash
->root
.plt
.offset
;
4086 if (sym_sec
->output_section
!= NULL
)
4087 destination
= (sym_value
4088 + sym_sec
->output_offset
4090 sym_sec
->output_section
->vma
);
4092 else if (sym_sec
->output_section
!= NULL
)
4093 destination
= (sym_value
+ irela
->r_addend
4094 + sym_sec
->output_offset
4095 + sym_sec
->output_section
->vma
);
4097 else if (hash
->root
.root
.type
== bfd_link_hash_undefined
4098 || (hash
->root
.root
.type
4099 == bfd_link_hash_undefweak
))
4101 /* For a shared library, use the PLT stub as
4102 target address to decide whether a long
4103 branch stub is needed.
4104 For absolute code, they cannot be handled. */
4105 struct elf_aarch64_link_hash_table
*globals
=
4106 elf_aarch64_hash_table (info
);
4108 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4109 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4111 sym_sec
= globals
->root
.splt
;
4112 sym_value
= hash
->root
.plt
.offset
;
4113 if (sym_sec
->output_section
!= NULL
)
4114 destination
= (sym_value
4115 + sym_sec
->output_offset
4117 sym_sec
->output_section
->vma
);
4124 bfd_set_error (bfd_error_bad_value
);
4125 goto error_ret_free_internal
;
4127 st_type
= ELF_ST_TYPE (hash
->root
.type
);
4128 sym_name
= hash
->root
.root
.root
.string
;
4131 /* Determine what (if any) linker stub is needed. */
4132 stub_type
= aarch64_type_of_stub (section
, irela
, sym_sec
,
4133 st_type
, destination
);
4134 if (stub_type
== aarch64_stub_none
)
4137 /* Support for grouping stub sections. */
4138 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
4140 /* Get the name of this stub. */
4141 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, hash
,
4144 goto error_ret_free_internal
;
4147 aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
4148 stub_name
, FALSE
, FALSE
);
4149 if (stub_entry
!= NULL
)
4151 /* The proper stub has already been created. */
4156 stub_entry
= _bfd_aarch64_add_stub_entry_in_group
4157 (stub_name
, section
, htab
);
4158 if (stub_entry
== NULL
)
4161 goto error_ret_free_internal
;
4164 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
4165 stub_entry
->target_section
= sym_sec
;
4166 stub_entry
->stub_type
= stub_type
;
4167 stub_entry
->h
= hash
;
4168 stub_entry
->st_type
= st_type
;
4170 if (sym_name
== NULL
)
4171 sym_name
= "unnamed";
4172 len
= sizeof (STUB_ENTRY_NAME
) + strlen (sym_name
);
4173 stub_entry
->output_name
= bfd_alloc (htab
->stub_bfd
, len
);
4174 if (stub_entry
->output_name
== NULL
)
4177 goto error_ret_free_internal
;
4180 snprintf (stub_entry
->output_name
, len
, STUB_ENTRY_NAME
,
4183 stub_changed
= TRUE
;
4186 /* We're done with the internal relocs, free them. */
4187 if (elf_section_data (section
)->relocs
== NULL
)
4188 free (internal_relocs
);
4195 _bfd_aarch64_resize_stubs (htab
);
4197 /* Ask the linker to do its stuff. */
4198 (*htab
->layout_sections_again
) ();
4199 stub_changed
= FALSE
;
4204 error_ret_free_local
:
4208 /* Build all the stubs associated with the current output file. The
4209 stubs are kept in a hash table attached to the main linker hash
4210 table. We also set up the .plt entries for statically linked PIC
4211 functions here. This function is called via aarch64_elf_finish in the
4215 elfNN_aarch64_build_stubs (struct bfd_link_info
*info
)
4218 struct bfd_hash_table
*table
;
4219 struct elf_aarch64_link_hash_table
*htab
;
4221 htab
= elf_aarch64_hash_table (info
);
4223 for (stub_sec
= htab
->stub_bfd
->sections
;
4224 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
4228 /* Ignore non-stub sections. */
4229 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
4232 /* Allocate memory to hold the linker stubs. */
4233 size
= stub_sec
->size
;
4234 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
4235 if (stub_sec
->contents
== NULL
&& size
!= 0)
4239 bfd_putl32 (0x14000000 | (size
>> 2), stub_sec
->contents
);
4240 stub_sec
->size
+= 4;
4243 /* Build the stubs as directed by the stub hash table. */
4244 table
= &htab
->stub_hash_table
;
4245 bfd_hash_traverse (table
, aarch64_build_one_stub
, info
);
4251 /* Add an entry to the code/data map for section SEC. */
4254 elfNN_aarch64_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
4256 struct _aarch64_elf_section_data
*sec_data
=
4257 elf_aarch64_section_data (sec
);
4258 unsigned int newidx
;
4260 if (sec_data
->map
== NULL
)
4262 sec_data
->map
= bfd_malloc (sizeof (elf_aarch64_section_map
));
4263 sec_data
->mapcount
= 0;
4264 sec_data
->mapsize
= 1;
4267 newidx
= sec_data
->mapcount
++;
4269 if (sec_data
->mapcount
> sec_data
->mapsize
)
4271 sec_data
->mapsize
*= 2;
4272 sec_data
->map
= bfd_realloc_or_free
4273 (sec_data
->map
, sec_data
->mapsize
* sizeof (elf_aarch64_section_map
));
4278 sec_data
->map
[newidx
].vma
= vma
;
4279 sec_data
->map
[newidx
].type
= type
;
4284 /* Initialise maps of insn/data for input BFDs. */
4286 bfd_elfNN_aarch64_init_maps (bfd
*abfd
)
4288 Elf_Internal_Sym
*isymbuf
;
4289 Elf_Internal_Shdr
*hdr
;
4290 unsigned int i
, localsyms
;
4292 /* Make sure that we are dealing with an AArch64 elf binary. */
4293 if (!is_aarch64_elf (abfd
))
4296 if ((abfd
->flags
& DYNAMIC
) != 0)
4299 hdr
= &elf_symtab_hdr (abfd
);
4300 localsyms
= hdr
->sh_info
;
4302 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4303 should contain the number of local symbols, which should come before any
4304 global symbols. Mapping symbols are always local. */
4305 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
, NULL
);
4307 /* No internal symbols read? Skip this BFD. */
4308 if (isymbuf
== NULL
)
4311 for (i
= 0; i
< localsyms
; i
++)
4313 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
4314 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4317 if (sec
!= NULL
&& ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
4319 name
= bfd_elf_string_from_elf_section (abfd
,
4323 if (bfd_is_aarch64_special_symbol_name
4324 (name
, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP
))
4325 elfNN_aarch64_section_map_add (sec
, name
[1], isym
->st_value
);
4330 /* Set option values needed during linking. */
4332 bfd_elfNN_aarch64_set_options (struct bfd
*output_bfd
,
4333 struct bfd_link_info
*link_info
,
4335 int no_wchar_warn
, int pic_veneer
,
4336 int fix_erratum_835769
,
4337 int fix_erratum_843419
)
4339 struct elf_aarch64_link_hash_table
*globals
;
4341 globals
= elf_aarch64_hash_table (link_info
);
4342 globals
->pic_veneer
= pic_veneer
;
4343 globals
->fix_erratum_835769
= fix_erratum_835769
;
4344 globals
->fix_erratum_843419
= fix_erratum_843419
;
4345 globals
->fix_erratum_843419_adr
= TRUE
;
4347 BFD_ASSERT (is_aarch64_elf (output_bfd
));
4348 elf_aarch64_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
4349 elf_aarch64_tdata (output_bfd
)->no_wchar_size_warning
= no_wchar_warn
;
4353 aarch64_calculate_got_entry_vma (struct elf_link_hash_entry
*h
,
4354 struct elf_aarch64_link_hash_table
4355 *globals
, struct bfd_link_info
*info
,
4356 bfd_vma value
, bfd
*output_bfd
,
4357 bfd_boolean
*unresolved_reloc_p
)
4359 bfd_vma off
= (bfd_vma
) - 1;
4360 asection
*basegot
= globals
->root
.sgot
;
4361 bfd_boolean dyn
= globals
->root
.dynamic_sections_created
;
4365 BFD_ASSERT (basegot
!= NULL
);
4366 off
= h
->got
.offset
;
4367 BFD_ASSERT (off
!= (bfd_vma
) - 1);
4368 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
4369 || (bfd_link_pic (info
)
4370 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4371 || (ELF_ST_VISIBILITY (h
->other
)
4372 && h
->root
.type
== bfd_link_hash_undefweak
))
4374 /* This is actually a static link, or it is a -Bsymbolic link
4375 and the symbol is defined locally. We must initialize this
4376 entry in the global offset table. Since the offset must
4377 always be a multiple of 8 (4 in the case of ILP32), we use
4378 the least significant bit to record whether we have
4379 initialized it already.
4380 When doing a dynamic link, we create a .rel(a).got relocation
4381 entry to initialize the value. This is done in the
4382 finish_dynamic_symbol routine. */
4387 bfd_put_NN (output_bfd
, value
, basegot
->contents
+ off
);
4392 *unresolved_reloc_p
= FALSE
;
4394 off
= off
+ basegot
->output_section
->vma
+ basegot
->output_offset
;
4400 /* Change R_TYPE to a more efficient access model where possible,
4401 return the new reloc type. */
4403 static bfd_reloc_code_real_type
4404 aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type
,
4405 struct elf_link_hash_entry
*h
)
4407 bfd_boolean is_local
= h
== NULL
;
4411 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
4412 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
4414 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4415 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
);
4417 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
4419 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4422 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
4424 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4425 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4427 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
4429 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4430 : BFD_RELOC_AARCH64_NONE
);
4432 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
4434 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4435 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
);
4437 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
4439 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4440 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
);
4442 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
4443 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
4445 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4446 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
);
4448 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
4449 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
: r_type
;
4451 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
4452 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
: r_type
;
4454 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
4457 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
4459 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4460 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4462 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
4463 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
4464 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
4465 /* Instructions with these relocations will become NOPs. */
4466 return BFD_RELOC_AARCH64_NONE
;
4468 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
4469 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
4470 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
4471 return is_local
? BFD_RELOC_AARCH64_NONE
: r_type
;
4474 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
4476 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4477 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
;
4479 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
4481 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4482 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
;
4493 aarch64_reloc_got_type (bfd_reloc_code_real_type r_type
)
4497 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
4498 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
4499 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
4500 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
4501 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
4502 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
4503 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
4504 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
4505 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
4508 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
4509 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
4510 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
4511 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
4512 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
4513 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
4514 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
4515 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
4518 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
4519 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
4520 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
4521 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
4522 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
4523 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
4524 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC
:
4525 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
4526 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
4527 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
4528 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
4529 return GOT_TLSDESC_GD
;
4531 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
4532 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
4533 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
4534 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
4535 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
4536 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
4546 aarch64_can_relax_tls (bfd
*input_bfd
,
4547 struct bfd_link_info
*info
,
4548 bfd_reloc_code_real_type r_type
,
4549 struct elf_link_hash_entry
*h
,
4550 unsigned long r_symndx
)
4552 unsigned int symbol_got_type
;
4553 unsigned int reloc_got_type
;
4555 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type
))
4558 symbol_got_type
= elfNN_aarch64_symbol_got_type (h
, input_bfd
, r_symndx
);
4559 reloc_got_type
= aarch64_reloc_got_type (r_type
);
4561 if (symbol_got_type
== GOT_TLS_IE
&& GOT_TLS_GD_ANY_P (reloc_got_type
))
4564 if (bfd_link_pic (info
))
4567 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
4573 /* Given the relocation code R_TYPE, return the relaxed bfd reloc
4576 static bfd_reloc_code_real_type
4577 aarch64_tls_transition (bfd
*input_bfd
,
4578 struct bfd_link_info
*info
,
4579 unsigned int r_type
,
4580 struct elf_link_hash_entry
*h
,
4581 unsigned long r_symndx
)
4583 bfd_reloc_code_real_type bfd_r_type
4584 = elfNN_aarch64_bfd_reloc_from_type (r_type
);
4586 if (! aarch64_can_relax_tls (input_bfd
, info
, bfd_r_type
, h
, r_symndx
))
4589 return aarch64_tls_transition_without_check (bfd_r_type
, h
);
4592 /* Return the base VMA address which should be subtracted from real addresses
4593 when resolving R_AARCH64_TLS_DTPREL relocation. */
4596 dtpoff_base (struct bfd_link_info
*info
)
4598 /* If tls_sec is NULL, we should have signalled an error already. */
4599 BFD_ASSERT (elf_hash_table (info
)->tls_sec
!= NULL
);
4600 return elf_hash_table (info
)->tls_sec
->vma
;
4603 /* Return the base VMA address which should be subtracted from real addresses
4604 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
4607 tpoff_base (struct bfd_link_info
*info
)
4609 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
4611 /* If tls_sec is NULL, we should have signalled an error already. */
4612 BFD_ASSERT (htab
->tls_sec
!= NULL
);
4614 bfd_vma base
= align_power ((bfd_vma
) TCB_SIZE
,
4615 htab
->tls_sec
->alignment_power
);
4616 return htab
->tls_sec
->vma
- base
;
4620 symbol_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4621 unsigned long r_symndx
)
4623 /* Calculate the address of the GOT entry for symbol
4624 referred to in h. */
4626 return &h
->got
.offset
;
4630 struct elf_aarch64_local_symbol
*l
;
4632 l
= elf_aarch64_locals (input_bfd
);
4633 return &l
[r_symndx
].got_offset
;
4638 symbol_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4639 unsigned long r_symndx
)
4642 p
= symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
4647 symbol_got_offset_mark_p (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4648 unsigned long r_symndx
)
4651 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
4656 symbol_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4657 unsigned long r_symndx
)
4660 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
4666 symbol_tlsdesc_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4667 unsigned long r_symndx
)
4669 /* Calculate the address of the GOT entry for symbol
4670 referred to in h. */
4673 struct elf_aarch64_link_hash_entry
*eh
;
4674 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
4675 return &eh
->tlsdesc_got_jump_table_offset
;
4680 struct elf_aarch64_local_symbol
*l
;
4682 l
= elf_aarch64_locals (input_bfd
);
4683 return &l
[r_symndx
].tlsdesc_got_jump_table_offset
;
4688 symbol_tlsdesc_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4689 unsigned long r_symndx
)
4692 p
= symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
4697 symbol_tlsdesc_got_offset_mark_p (bfd
*input_bfd
,
4698 struct elf_link_hash_entry
*h
,
4699 unsigned long r_symndx
)
4702 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
4707 symbol_tlsdesc_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
4708 unsigned long r_symndx
)
4711 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
4716 /* Data for make_branch_to_erratum_835769_stub(). */
4718 struct erratum_835769_branch_to_stub_data
4720 struct bfd_link_info
*info
;
4721 asection
*output_section
;
4725 /* Helper to insert branches to erratum 835769 stubs in the right
4726 places for a particular section. */
4729 make_branch_to_erratum_835769_stub (struct bfd_hash_entry
*gen_entry
,
4732 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4733 struct erratum_835769_branch_to_stub_data
*data
;
4735 unsigned long branch_insn
= 0;
4736 bfd_vma veneered_insn_loc
, veneer_entry_loc
;
4737 bfd_signed_vma branch_offset
;
4738 unsigned int target
;
4741 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
4742 data
= (struct erratum_835769_branch_to_stub_data
*) in_arg
;
4744 if (stub_entry
->target_section
!= data
->output_section
4745 || stub_entry
->stub_type
!= aarch64_stub_erratum_835769_veneer
)
4748 contents
= data
->contents
;
4749 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
4750 + stub_entry
->target_section
->output_offset
4751 + stub_entry
->target_value
;
4752 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
4753 + stub_entry
->stub_sec
->output_offset
4754 + stub_entry
->stub_offset
;
4755 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
4757 abfd
= stub_entry
->target_section
->owner
;
4758 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
4759 (*_bfd_error_handler
)
4760 (_("%B: error: Erratum 835769 stub out "
4761 "of range (input file too large)"), abfd
);
4763 target
= stub_entry
->target_value
;
4764 branch_insn
= 0x14000000;
4765 branch_offset
>>= 2;
4766 branch_offset
&= 0x3ffffff;
4767 branch_insn
|= branch_offset
;
4768 bfd_putl32 (branch_insn
, &contents
[target
]);
4775 _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry
*gen_entry
,
4778 struct elf_aarch64_stub_hash_entry
*stub_entry
4779 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
4780 struct erratum_835769_branch_to_stub_data
*data
4781 = (struct erratum_835769_branch_to_stub_data
*) in_arg
;
4782 struct bfd_link_info
*info
;
4783 struct elf_aarch64_link_hash_table
*htab
;
4791 contents
= data
->contents
;
4792 section
= data
->output_section
;
4794 htab
= elf_aarch64_hash_table (info
);
4796 if (stub_entry
->target_section
!= section
4797 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
)
4800 insn
= bfd_getl32 (contents
+ stub_entry
->target_value
);
4802 stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
);
4804 place
= (section
->output_section
->vma
+ section
->output_offset
4805 + stub_entry
->adrp_offset
);
4806 insn
= bfd_getl32 (contents
+ stub_entry
->adrp_offset
);
4808 if ((insn
& AARCH64_ADRP_OP_MASK
) != AARCH64_ADRP_OP
)
4811 bfd_signed_vma imm
=
4812 (_bfd_aarch64_sign_extend
4813 ((bfd_vma
) _bfd_aarch64_decode_adrp_imm (insn
) << 12, 33)
4816 if (htab
->fix_erratum_843419_adr
4817 && (imm
>= AARCH64_MIN_ADRP_IMM
&& imm
<= AARCH64_MAX_ADRP_IMM
))
4819 insn
= (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP
, imm
)
4820 | AARCH64_RT (insn
));
4821 bfd_putl32 (insn
, contents
+ stub_entry
->adrp_offset
);
4825 bfd_vma veneered_insn_loc
;
4826 bfd_vma veneer_entry_loc
;
4827 bfd_signed_vma branch_offset
;
4828 uint32_t branch_insn
;
4830 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
4831 + stub_entry
->target_section
->output_offset
4832 + stub_entry
->target_value
;
4833 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
4834 + stub_entry
->stub_sec
->output_offset
4835 + stub_entry
->stub_offset
;
4836 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
4838 abfd
= stub_entry
->target_section
->owner
;
4839 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
4840 (*_bfd_error_handler
)
4841 (_("%B: error: Erratum 843419 stub out "
4842 "of range (input file too large)"), abfd
);
4844 branch_insn
= 0x14000000;
4845 branch_offset
>>= 2;
4846 branch_offset
&= 0x3ffffff;
4847 branch_insn
|= branch_offset
;
4848 bfd_putl32 (branch_insn
, contents
+ stub_entry
->target_value
);
4855 elfNN_aarch64_write_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4856 struct bfd_link_info
*link_info
,
4861 struct elf_aarch64_link_hash_table
*globals
=
4862 elf_aarch64_hash_table (link_info
);
4864 if (globals
== NULL
)
4867 /* Fix code to point to erratum 835769 stubs. */
4868 if (globals
->fix_erratum_835769
)
4870 struct erratum_835769_branch_to_stub_data data
;
4872 data
.info
= link_info
;
4873 data
.output_section
= sec
;
4874 data
.contents
= contents
;
4875 bfd_hash_traverse (&globals
->stub_hash_table
,
4876 make_branch_to_erratum_835769_stub
, &data
);
4879 if (globals
->fix_erratum_843419
)
4881 struct erratum_835769_branch_to_stub_data data
;
4883 data
.info
= link_info
;
4884 data
.output_section
= sec
;
4885 data
.contents
= contents
;
4886 bfd_hash_traverse (&globals
->stub_hash_table
,
4887 _bfd_aarch64_erratum_843419_branch_to_stub
, &data
);
4893 /* Perform a relocation as part of a final link. */
4894 static bfd_reloc_status_type
4895 elfNN_aarch64_final_link_relocate (reloc_howto_type
*howto
,
4898 asection
*input_section
,
4900 Elf_Internal_Rela
*rel
,
4902 struct bfd_link_info
*info
,
4904 struct elf_link_hash_entry
*h
,
4905 bfd_boolean
*unresolved_reloc_p
,
4906 bfd_boolean save_addend
,
4907 bfd_vma
*saved_addend
,
4908 Elf_Internal_Sym
*sym
)
4910 Elf_Internal_Shdr
*symtab_hdr
;
4911 unsigned int r_type
= howto
->type
;
4912 bfd_reloc_code_real_type bfd_r_type
4913 = elfNN_aarch64_bfd_reloc_from_howto (howto
);
4914 bfd_reloc_code_real_type new_bfd_r_type
;
4915 unsigned long r_symndx
;
4916 bfd_byte
*hit_data
= contents
+ rel
->r_offset
;
4918 bfd_signed_vma signed_addend
;
4919 struct elf_aarch64_link_hash_table
*globals
;
4920 bfd_boolean weak_undef_p
;
4923 globals
= elf_aarch64_hash_table (info
);
4925 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
4927 BFD_ASSERT (is_aarch64_elf (input_bfd
));
4929 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
4931 /* It is possible to have linker relaxations on some TLS access
4932 models. Update our information here. */
4933 new_bfd_r_type
= aarch64_tls_transition (input_bfd
, info
, r_type
, h
, r_symndx
);
4934 if (new_bfd_r_type
!= bfd_r_type
)
4936 bfd_r_type
= new_bfd_r_type
;
4937 howto
= elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type
);
4938 BFD_ASSERT (howto
!= NULL
);
4939 r_type
= howto
->type
;
4942 place
= input_section
->output_section
->vma
4943 + input_section
->output_offset
+ rel
->r_offset
;
4945 /* Get addend, accumulating the addend for consecutive relocs
4946 which refer to the same offset. */
4947 signed_addend
= saved_addend
? *saved_addend
: 0;
4948 signed_addend
+= rel
->r_addend
;
4950 weak_undef_p
= (h
? h
->root
.type
== bfd_link_hash_undefweak
4951 : bfd_is_und_section (sym_sec
));
4953 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
4954 it here if it is defined in a non-shared object. */
4956 && h
->type
== STT_GNU_IFUNC
4963 if ((input_section
->flags
& SEC_ALLOC
) == 0
4964 || h
->plt
.offset
== (bfd_vma
) -1)
4967 /* STT_GNU_IFUNC symbol must go through PLT. */
4968 plt
= globals
->root
.splt
? globals
->root
.splt
: globals
->root
.iplt
;
4969 value
= (plt
->output_section
->vma
+ plt
->output_offset
+ h
->plt
.offset
);
4974 if (h
->root
.root
.string
)
4975 name
= h
->root
.root
.string
;
4977 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
4979 (*_bfd_error_handler
)
4980 (_("%B: relocation %s against STT_GNU_IFUNC "
4981 "symbol `%s' isn't handled by %s"), input_bfd
,
4982 howto
->name
, name
, __FUNCTION__
);
4983 bfd_set_error (bfd_error_bad_value
);
4987 case BFD_RELOC_AARCH64_32
:
4989 case BFD_RELOC_AARCH64_NN
:
4990 if (rel
->r_addend
!= 0)
4992 if (h
->root
.root
.string
)
4993 name
= h
->root
.root
.string
;
4995 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
,
4997 (*_bfd_error_handler
)
4998 (_("%B: relocation %s against STT_GNU_IFUNC "
4999 "symbol `%s' has non-zero addend: %d"),
5000 input_bfd
, howto
->name
, name
, rel
->r_addend
);
5001 bfd_set_error (bfd_error_bad_value
);
5005 /* Generate dynamic relocation only when there is a
5006 non-GOT reference in a shared object. */
5007 if (bfd_link_pic (info
) && h
->non_got_ref
)
5009 Elf_Internal_Rela outrel
;
5012 /* Need a dynamic relocation to get the real function
5014 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
5018 if (outrel
.r_offset
== (bfd_vma
) -1
5019 || outrel
.r_offset
== (bfd_vma
) -2)
5022 outrel
.r_offset
+= (input_section
->output_section
->vma
5023 + input_section
->output_offset
);
5025 if (h
->dynindx
== -1
5027 || bfd_link_executable (info
))
5029 /* This symbol is resolved locally. */
5030 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
5031 outrel
.r_addend
= (h
->root
.u
.def
.value
5032 + h
->root
.u
.def
.section
->output_section
->vma
5033 + h
->root
.u
.def
.section
->output_offset
);
5037 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5038 outrel
.r_addend
= 0;
5041 sreloc
= globals
->root
.irelifunc
;
5042 elf_append_rela (output_bfd
, sreloc
, &outrel
);
5044 /* If this reloc is against an external symbol, we
5045 do not want to fiddle with the addend. Otherwise,
5046 we need to include the symbol value so that it
5047 becomes an addend for the dynamic reloc. For an
5048 internal symbol, we have updated addend. */
5049 return bfd_reloc_ok
;
5052 case BFD_RELOC_AARCH64_CALL26
:
5053 case BFD_RELOC_AARCH64_JUMP26
:
5054 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5057 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
5059 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5060 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5061 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5062 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5063 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5064 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5065 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5066 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5067 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5068 base_got
= globals
->root
.sgot
;
5069 off
= h
->got
.offset
;
5071 if (base_got
== NULL
)
5074 if (off
== (bfd_vma
) -1)
5078 /* We can't use h->got.offset here to save state, or
5079 even just remember the offset, as finish_dynamic_symbol
5080 would use that as offset into .got. */
5082 if (globals
->root
.splt
!= NULL
)
5084 plt_index
= ((h
->plt
.offset
- globals
->plt_header_size
) /
5085 globals
->plt_entry_size
);
5086 off
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
5087 base_got
= globals
->root
.sgotplt
;
5091 plt_index
= h
->plt
.offset
/ globals
->plt_entry_size
;
5092 off
= plt_index
* GOT_ENTRY_SIZE
;
5093 base_got
= globals
->root
.igotplt
;
5096 if (h
->dynindx
== -1
5100 /* This references the local definition. We must
5101 initialize this entry in the global offset table.
5102 Since the offset must always be a multiple of 8,
5103 we use the least significant bit to record
5104 whether we have initialized it already.
5106 When doing a dynamic link, we create a .rela.got
5107 relocation entry to initialize the value. This
5108 is done in the finish_dynamic_symbol routine. */
5113 bfd_put_NN (output_bfd
, value
,
5114 base_got
->contents
+ off
);
5115 /* Note that this is harmless as -1 | 1 still is -1. */
5119 value
= (base_got
->output_section
->vma
5120 + base_got
->output_offset
+ off
);
5123 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
,
5125 unresolved_reloc_p
);
5129 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5130 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5131 addend
= (globals
->root
.sgot
->output_section
->vma
5132 + globals
->root
.sgot
->output_offset
);
5134 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5135 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5136 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5137 value
= (value
- globals
->root
.sgot
->output_section
->vma
5138 - globals
->root
.sgot
->output_offset
);
5143 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5144 addend
, weak_undef_p
);
5145 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
, howto
, value
);
5146 case BFD_RELOC_AARCH64_ADD_LO12
:
5147 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5154 case BFD_RELOC_AARCH64_NONE
:
5155 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5156 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5157 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5158 *unresolved_reloc_p
= FALSE
;
5159 return bfd_reloc_ok
;
5162 case BFD_RELOC_AARCH64_32
:
5164 case BFD_RELOC_AARCH64_NN
:
5166 /* When generating a shared object or relocatable executable, these
5167 relocations are copied into the output file to be resolved at
5169 if (((bfd_link_pic (info
) == TRUE
)
5170 || globals
->root
.is_relocatable_executable
)
5171 && (input_section
->flags
& SEC_ALLOC
)
5173 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5174 || h
->root
.type
!= bfd_link_hash_undefweak
))
5176 Elf_Internal_Rela outrel
;
5178 bfd_boolean skip
, relocate
;
5181 *unresolved_reloc_p
= FALSE
;
5186 outrel
.r_addend
= signed_addend
;
5188 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
5190 if (outrel
.r_offset
== (bfd_vma
) - 1)
5192 else if (outrel
.r_offset
== (bfd_vma
) - 2)
5198 outrel
.r_offset
+= (input_section
->output_section
->vma
5199 + input_section
->output_offset
);
5202 memset (&outrel
, 0, sizeof outrel
);
5205 && (!bfd_link_pic (info
)
5206 || !SYMBOLIC_BIND (info
, h
)
5207 || !h
->def_regular
))
5208 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5213 /* On SVR4-ish systems, the dynamic loader cannot
5214 relocate the text and data segments independently,
5215 so the symbol does not matter. */
5217 outrel
.r_info
= ELFNN_R_INFO (symbol
, AARCH64_R (RELATIVE
));
5218 outrel
.r_addend
+= value
;
5221 sreloc
= elf_section_data (input_section
)->sreloc
;
5222 if (sreloc
== NULL
|| sreloc
->contents
== NULL
)
5223 return bfd_reloc_notsupported
;
5225 loc
= sreloc
->contents
+ sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
5226 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
5228 if (sreloc
->reloc_count
* RELOC_SIZE (globals
) > sreloc
->size
)
5230 /* Sanity to check that we have previously allocated
5231 sufficient space in the relocation section for the
5232 number of relocations we actually want to emit. */
5236 /* If this reloc is against an external symbol, we do not want to
5237 fiddle with the addend. Otherwise, we need to include the symbol
5238 value so that it becomes an addend for the dynamic reloc. */
5240 return bfd_reloc_ok
;
5242 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5243 contents
, rel
->r_offset
, value
,
5247 value
+= signed_addend
;
5250 case BFD_RELOC_AARCH64_CALL26
:
5251 case BFD_RELOC_AARCH64_JUMP26
:
5253 asection
*splt
= globals
->root
.splt
;
5254 bfd_boolean via_plt_p
=
5255 splt
!= NULL
&& h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) - 1;
5257 /* A call to an undefined weak symbol is converted to a jump to
5258 the next instruction unless a PLT entry will be created.
5259 The jump to the next instruction is optimized as a NOP.
5260 Do the same for local undefined symbols. */
5261 if (weak_undef_p
&& ! via_plt_p
)
5263 bfd_putl32 (INSN_NOP
, hit_data
);
5264 return bfd_reloc_ok
;
5267 /* If the call goes through a PLT entry, make sure to
5268 check distance to the right destination address. */
5270 value
= (splt
->output_section
->vma
5271 + splt
->output_offset
+ h
->plt
.offset
);
5273 /* Check if a stub has to be inserted because the destination
5275 struct elf_aarch64_stub_hash_entry
*stub_entry
= NULL
;
5277 /* If the branch destination is directed to plt stub, "value" will be
5278 the final destination, otherwise we should plus signed_addend, it may
5279 contain non-zero value, for example call to local function symbol
5280 which are turned into "sec_sym + sec_off", and sec_off is kept in
5282 if (! aarch64_valid_branch_p (via_plt_p
? value
: value
+ signed_addend
,
5284 /* The target is out of reach, so redirect the branch to
5285 the local stub for this function. */
5286 stub_entry
= elfNN_aarch64_get_stub_entry (input_section
, sym_sec
, h
,
5288 if (stub_entry
!= NULL
)
5290 value
= (stub_entry
->stub_offset
5291 + stub_entry
->stub_sec
->output_offset
5292 + stub_entry
->stub_sec
->output_section
->vma
);
5294 /* We have redirected the destination to stub entry address,
5295 so ignore any addend record in the original rela entry. */
5299 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5300 signed_addend
, weak_undef_p
);
5301 *unresolved_reloc_p
= FALSE
;
5304 case BFD_RELOC_AARCH64_16_PCREL
:
5305 case BFD_RELOC_AARCH64_32_PCREL
:
5306 case BFD_RELOC_AARCH64_64_PCREL
:
5307 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
5308 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5309 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
5310 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
5311 if (bfd_link_pic (info
)
5312 && (input_section
->flags
& SEC_ALLOC
) != 0
5313 && (input_section
->flags
& SEC_READONLY
) != 0
5317 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5319 (*_bfd_error_handler
)
5320 (_("%B: relocation %s against external symbol `%s' can not be used"
5321 " when making a shared object; recompile with -fPIC"),
5322 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
5323 h
->root
.root
.string
);
5324 bfd_set_error (bfd_error_bad_value
);
5328 case BFD_RELOC_AARCH64_16
:
5329 case BFD_RELOC_AARCH64_ADD_LO12
:
5330 case BFD_RELOC_AARCH64_BRANCH19
:
5331 case BFD_RELOC_AARCH64_LDST128_LO12
:
5332 case BFD_RELOC_AARCH64_LDST16_LO12
:
5333 case BFD_RELOC_AARCH64_LDST32_LO12
:
5334 case BFD_RELOC_AARCH64_LDST64_LO12
:
5335 case BFD_RELOC_AARCH64_LDST8_LO12
:
5336 case BFD_RELOC_AARCH64_MOVW_G0
:
5337 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
5338 case BFD_RELOC_AARCH64_MOVW_G0_S
:
5339 case BFD_RELOC_AARCH64_MOVW_G1
:
5340 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
5341 case BFD_RELOC_AARCH64_MOVW_G1_S
:
5342 case BFD_RELOC_AARCH64_MOVW_G2
:
5343 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
5344 case BFD_RELOC_AARCH64_MOVW_G2_S
:
5345 case BFD_RELOC_AARCH64_MOVW_G3
:
5346 case BFD_RELOC_AARCH64_TSTBR14
:
5347 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5348 signed_addend
, weak_undef_p
);
5351 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5352 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5353 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5354 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5355 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5356 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5357 if (globals
->root
.sgot
== NULL
)
5358 BFD_ASSERT (h
!= NULL
);
5363 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
, value
,
5365 unresolved_reloc_p
);
5366 if (bfd_r_type
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5367 || bfd_r_type
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
)
5368 addend
= (globals
->root
.sgot
->output_section
->vma
5369 + globals
->root
.sgot
->output_offset
);
5370 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5371 addend
, weak_undef_p
);
5376 struct elf_aarch64_local_symbol
*locals
5377 = elf_aarch64_locals (input_bfd
);
5381 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5382 (*_bfd_error_handler
)
5383 (_("%B: Local symbol descriptor table be NULL when applying "
5384 "relocation %s against local symbol"),
5385 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
5389 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
5390 base_got
= globals
->root
.sgot
;
5391 bfd_vma got_entry_addr
= (base_got
->output_section
->vma
5392 + base_got
->output_offset
+ off
);
5394 if (!symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
5396 bfd_put_64 (output_bfd
, value
, base_got
->contents
+ off
);
5398 if (bfd_link_pic (info
))
5401 Elf_Internal_Rela outrel
;
5403 /* For local symbol, we have done absolute relocation in static
5404 linking stageh. While for share library, we need to update
5405 the content of GOT entry according to the share objects
5406 loading base address. So we need to generate a
5407 R_AARCH64_RELATIVE reloc for dynamic linker. */
5408 s
= globals
->root
.srelgot
;
5412 outrel
.r_offset
= got_entry_addr
;
5413 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
5414 outrel
.r_addend
= value
;
5415 elf_append_rela (output_bfd
, s
, &outrel
);
5418 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
5421 /* Update the relocation value to GOT entry addr as we have transformed
5422 the direct data access into indirect data access through GOT. */
5423 value
= got_entry_addr
;
5425 if (bfd_r_type
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5426 || bfd_r_type
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
)
5427 addend
= base_got
->output_section
->vma
+ base_got
->output_offset
;
5429 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5430 addend
, weak_undef_p
);
5435 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5436 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5437 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5439 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
, value
,
5441 unresolved_reloc_p
);
5444 struct elf_aarch64_local_symbol
*locals
5445 = elf_aarch64_locals (input_bfd
);
5449 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5450 (*_bfd_error_handler
)
5451 (_("%B: Local symbol descriptor table be NULL when applying "
5452 "relocation %s against local symbol"),
5453 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
5457 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
5458 base_got
= globals
->root
.sgot
;
5459 if (base_got
== NULL
)
5462 bfd_vma got_entry_addr
= (base_got
->output_section
->vma
5463 + base_got
->output_offset
+ off
);
5465 if (!symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
5467 bfd_put_64 (output_bfd
, value
, base_got
->contents
+ off
);
5469 if (bfd_link_pic (info
))
5472 Elf_Internal_Rela outrel
;
5474 /* For local symbol, we have done absolute relocation in static
5475 linking stage. While for share library, we need to update
5476 the content of GOT entry according to the share objects
5477 loading base address. So we need to generate a
5478 R_AARCH64_RELATIVE reloc for dynamic linker. */
5479 s
= globals
->root
.srelgot
;
5483 outrel
.r_offset
= got_entry_addr
;
5484 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
5485 outrel
.r_addend
= value
;
5486 elf_append_rela (output_bfd
, s
, &outrel
);
5489 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
5493 /* Update the relocation value to GOT entry addr as we have transformed
5494 the direct data access into indirect data access through GOT. */
5495 value
= symbol_got_offset (input_bfd
, h
, r_symndx
);
5496 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5498 *unresolved_reloc_p
= FALSE
;
5501 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
5502 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
5503 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
5504 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
5505 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
5506 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
5507 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
5508 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
5509 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
5510 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5511 if (globals
->root
.sgot
== NULL
)
5512 return bfd_reloc_notsupported
;
5514 value
= (symbol_got_offset (input_bfd
, h
, r_symndx
)
5515 + globals
->root
.sgot
->output_section
->vma
5516 + globals
->root
.sgot
->output_offset
);
5518 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5520 *unresolved_reloc_p
= FALSE
;
5523 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
5524 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
5525 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
5526 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
5527 if (globals
->root
.sgot
== NULL
)
5528 return bfd_reloc_notsupported
;
5530 value
= symbol_got_offset (input_bfd
, h
, r_symndx
);
5531 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5533 *unresolved_reloc_p
= FALSE
;
5536 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12
:
5537 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12
:
5538 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC
:
5539 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12
:
5540 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC
:
5541 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12
:
5542 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC
:
5543 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12
:
5544 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC
:
5545 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12
:
5546 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC
:
5547 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0
:
5548 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC
:
5549 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1
:
5550 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC
:
5551 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2
:
5552 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5553 signed_addend
- dtpoff_base (info
),
5557 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
:
5558 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12
:
5559 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC
:
5560 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0
:
5561 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
:
5562 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
:
5563 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
:
5564 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
:
5565 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5566 signed_addend
- tpoff_base (info
),
5568 *unresolved_reloc_p
= FALSE
;
5571 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
5572 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
5573 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
5574 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
5575 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC
:
5576 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
5577 if (globals
->root
.sgot
== NULL
)
5578 return bfd_reloc_notsupported
;
5579 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
5580 + globals
->root
.sgotplt
->output_section
->vma
5581 + globals
->root
.sgotplt
->output_offset
5582 + globals
->sgotplt_jump_table_size
);
5584 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5586 *unresolved_reloc_p
= FALSE
;
5589 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
5590 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
5591 if (globals
->root
.sgot
== NULL
)
5592 return bfd_reloc_notsupported
;
5594 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
5595 + globals
->root
.sgotplt
->output_section
->vma
5596 + globals
->root
.sgotplt
->output_offset
5597 + globals
->sgotplt_jump_table_size
);
5599 value
-= (globals
->root
.sgot
->output_section
->vma
5600 + globals
->root
.sgot
->output_offset
);
5602 value
= _bfd_aarch64_elf_resolve_relocation (bfd_r_type
, place
, value
,
5604 *unresolved_reloc_p
= FALSE
;
5608 return bfd_reloc_notsupported
;
5612 *saved_addend
= value
;
5614 /* Only apply the final relocation in a sequence. */
5616 return bfd_reloc_continue
;
5618 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
5622 /* Handle TLS relaxations. Relaxing is possible for symbols that use
5623 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
5626 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
5627 is to then call final_link_relocate. Return other values in the
5630 static bfd_reloc_status_type
5631 elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table
*globals
,
5632 bfd
*input_bfd
, bfd_byte
*contents
,
5633 Elf_Internal_Rela
*rel
, struct elf_link_hash_entry
*h
)
5635 bfd_boolean is_local
= h
== NULL
;
5636 unsigned int r_type
= ELFNN_R_TYPE (rel
->r_info
);
5639 BFD_ASSERT (globals
&& input_bfd
&& contents
&& rel
);
5641 switch (elfNN_aarch64_bfd_reloc_from_type (r_type
))
5643 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
5644 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
5647 /* GD->LE relaxation:
5648 adrp x0, :tlsgd:var => movz x0, :tprel_g1:var
5650 adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var
5652 bfd_putl32 (0xd2a00000, contents
+ rel
->r_offset
);
5653 return bfd_reloc_continue
;
5657 /* GD->IE relaxation:
5658 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
5660 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
5662 return bfd_reloc_continue
;
5665 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
5669 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
5672 /* Tiny TLSDESC->LE relaxation:
5673 ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var
5674 adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var
5678 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
5679 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
5681 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
5682 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
5683 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5685 bfd_putl32 (0xd2a00000, contents
+ rel
->r_offset
);
5686 bfd_putl32 (0xf2800000, contents
+ rel
->r_offset
+ 4);
5687 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
5688 return bfd_reloc_continue
;
5692 /* Tiny TLSDESC->IE relaxation:
5693 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
5694 adr x0, :tlsdesc:var => nop
5698 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
5699 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
5701 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5702 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5704 bfd_putl32 (0x58000000, contents
+ rel
->r_offset
);
5705 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
5706 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
5707 return bfd_reloc_continue
;
5710 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
5713 /* Tiny GD->LE relaxation:
5714 adr x0, :tlsgd:var => mrs x1, tpidr_el0
5715 bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12
5716 nop => add x0, x0, #:tprel_lo12_nc:x
5719 /* First kill the tls_get_addr reloc on the bl instruction. */
5720 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
5722 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 0);
5723 bfd_putl32 (0x91400020, contents
+ rel
->r_offset
+ 4);
5724 bfd_putl32 (0x91000000, contents
+ rel
->r_offset
+ 8);
5726 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
5727 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
));
5728 rel
[1].r_offset
= rel
->r_offset
+ 8;
5730 /* Move the current relocation to the second instruction in
5733 rel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
5734 AARCH64_R (TLSLE_ADD_TPREL_HI12
));
5735 return bfd_reloc_continue
;
5739 /* Tiny GD->IE relaxation:
5740 adr x0, :tlsgd:var => ldr x0, :gottprel:var
5741 bl __tls_get_addr => mrs x1, tpidr_el0
5742 nop => add x0, x0, x1
5745 /* First kill the tls_get_addr reloc on the bl instruction. */
5746 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
5747 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5749 bfd_putl32 (0x58000000, contents
+ rel
->r_offset
);
5750 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
5751 bfd_putl32 (0x8b000020, contents
+ rel
->r_offset
+ 8);
5752 return bfd_reloc_continue
;
5756 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
5757 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSGD_MOVW_G0_NC
));
5758 BFD_ASSERT (rel
->r_offset
+ 12 == rel
[2].r_offset
);
5759 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (CALL26
));
5763 /* Large GD->LE relaxation:
5764 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
5765 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
5766 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
5767 bl __tls_get_addr => mrs x1, tpidr_el0
5768 nop => add x0, x0, x1
5770 rel
[2].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
5771 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
5772 rel
[2].r_offset
= rel
->r_offset
+ 8;
5774 bfd_putl32 (0xd2c00000, contents
+ rel
->r_offset
+ 0);
5775 bfd_putl32 (0xf2a00000, contents
+ rel
->r_offset
+ 4);
5776 bfd_putl32 (0xf2800000, contents
+ rel
->r_offset
+ 8);
5777 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
5778 bfd_putl32 (0x8b000020, contents
+ rel
->r_offset
+ 16);
5782 /* Large GD->IE relaxation:
5783 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
5784 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
5785 add x0, gp, x0 => ldr x0, [gp, x0]
5786 bl __tls_get_addr => mrs x1, tpidr_el0
5787 nop => add x0, x0, x1
5789 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5790 bfd_putl32 (0xd2a80000, contents
+ rel
->r_offset
+ 0);
5791 bfd_putl32 (0x58000000, contents
+ rel
->r_offset
+ 8);
5792 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
5793 bfd_putl32 (0x8b000020, contents
+ rel
->r_offset
+ 16);
5795 return bfd_reloc_continue
;
5797 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
5798 return bfd_reloc_continue
;
5801 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
5802 return bfd_reloc_continue
;
5804 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
5807 /* GD->LE relaxation:
5808 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
5810 bfd_putl32 (0xf2800000, contents
+ rel
->r_offset
);
5811 return bfd_reloc_continue
;
5815 /* GD->IE relaxation:
5816 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var]
5818 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
5820 bfd_putl32 (insn
, contents
+ rel
->r_offset
);
5821 return bfd_reloc_continue
;
5824 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
5827 /* GD->LE relaxation
5828 add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var
5829 bl __tls_get_addr => mrs x1, tpidr_el0
5830 nop => add x0, x1, x0
5833 /* First kill the tls_get_addr reloc on the bl instruction. */
5834 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
5835 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5837 bfd_putl32 (0xf2800000, contents
+ rel
->r_offset
);
5838 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
5839 bfd_putl32 (0x8b000020, contents
+ rel
->r_offset
+ 8);
5840 return bfd_reloc_continue
;
5844 /* GD->IE relaxation
5845 ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var]
5846 BL __tls_get_addr => mrs x1, tpidr_el0
5848 NOP => add x0, x1, x0
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 bfd_putl32 (0xf9400000, contents
+ rel
->r_offset
);
5858 /* We choose to fixup the BL and NOP instructions using the
5859 offset from the second relocation to allow flexibility in
5860 scheduling instructions between the ADD and BL. */
5861 bfd_putl32 (0xd53bd041, contents
+ rel
[1].r_offset
);
5862 bfd_putl32 (0x8b000020, contents
+ rel
[1].r_offset
+ 4);
5863 return bfd_reloc_continue
;
5866 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5867 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
5868 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5869 /* GD->IE/LE relaxation:
5870 add x0, x0, #:tlsdesc_lo12:var => nop
5873 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
);
5874 return bfd_reloc_ok
;
5876 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5879 /* GD->LE relaxation:
5880 ldr xd, [gp, xn] => movk x0, #:tprel_g0_nc:var
5882 bfd_putl32 (0xf2800000, contents
+ rel
->r_offset
);
5883 return bfd_reloc_continue
;
5887 /* GD->IE relaxation:
5888 ldr xd, [gp, xn] => ldr x0, [gp, xn]
5890 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
5892 bfd_putl32 (insn
, contents
+ rel
->r_offset
);
5893 return bfd_reloc_ok
;
5896 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
5897 /* GD->LE relaxation:
5898 movk xd, #:tlsdesc_off_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
5900 movk xd, #:tlsdesc_off_g0_nc:var => movk xd, #:gottprel_g0_nc:var
5903 bfd_putl32 (0xf2a00000, contents
+ rel
->r_offset
);
5904 return bfd_reloc_continue
;
5906 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
5909 /* GD->LE relaxation:
5910 movz xd, #:tlsdesc_off_g1:var => movz x0, #:tprel_g2:var, lsl #32
5912 bfd_putl32 (0xd2c00000, contents
+ rel
->r_offset
);
5913 return bfd_reloc_continue
;
5917 /* GD->IE relaxation:
5918 movz xd, #:tlsdesc_off_g1:var => movz xd, #:gottprel_g1:var, lsl #16
5920 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
5921 bfd_putl32 (0xd2a00000 | (insn
& 0x1f), contents
+ rel
->r_offset
);
5922 return bfd_reloc_continue
;
5925 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
5926 /* IE->LE relaxation:
5927 adrp xd, :gottprel:var => movz xd, :tprel_g1:var
5931 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
5932 bfd_putl32 (0xd2a00000 | (insn
& 0x1f), contents
+ rel
->r_offset
);
5934 return bfd_reloc_continue
;
5936 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
5937 /* IE->LE relaxation:
5938 ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var
5942 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
5943 bfd_putl32 (0xf2800000 | (insn
& 0x1f), contents
+ rel
->r_offset
);
5945 return bfd_reloc_continue
;
5947 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5948 /* LD->LE relaxation (tiny):
5949 adr x0, :tlsldm:x => mrs x0, tpidr_el0
5950 bl __tls_get_addr => add x0, x0, TCB_SIZE
5954 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
5955 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
5956 /* No need of CALL26 relocation for tls_get_addr. */
5957 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5958 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
+ 0);
5959 bfd_putl32 (0x91004000, contents
+ rel
->r_offset
+ 4);
5960 return bfd_reloc_ok
;
5962 return bfd_reloc_continue
;
5964 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
5965 /* LD->LE relaxation (small):
5966 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
5970 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
);
5971 return bfd_reloc_ok
;
5973 return bfd_reloc_continue
;
5975 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
5976 /* LD->LE relaxation (small):
5977 add x0, #:tlsldm_lo12:x => add x0, x0, TCB_SIZE
5978 bl __tls_get_addr => nop
5982 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
5983 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
5984 /* No need of CALL26 relocation for tls_get_addr. */
5985 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
5986 bfd_putl32 (0x91004000, contents
+ rel
->r_offset
+ 0);
5987 bfd_putl32 (0xd503201f, contents
+ rel
->r_offset
+ 4);
5988 return bfd_reloc_ok
;
5990 return bfd_reloc_continue
;
5993 return bfd_reloc_continue
;
5996 return bfd_reloc_ok
;
5999 /* Relocate an AArch64 ELF section. */
6002 elfNN_aarch64_relocate_section (bfd
*output_bfd
,
6003 struct bfd_link_info
*info
,
6005 asection
*input_section
,
6007 Elf_Internal_Rela
*relocs
,
6008 Elf_Internal_Sym
*local_syms
,
6009 asection
**local_sections
)
6011 Elf_Internal_Shdr
*symtab_hdr
;
6012 struct elf_link_hash_entry
**sym_hashes
;
6013 Elf_Internal_Rela
*rel
;
6014 Elf_Internal_Rela
*relend
;
6016 struct elf_aarch64_link_hash_table
*globals
;
6017 bfd_boolean save_addend
= FALSE
;
6020 globals
= elf_aarch64_hash_table (info
);
6022 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
6023 sym_hashes
= elf_sym_hashes (input_bfd
);
6026 relend
= relocs
+ input_section
->reloc_count
;
6027 for (; rel
< relend
; rel
++)
6029 unsigned int r_type
;
6030 bfd_reloc_code_real_type bfd_r_type
;
6031 bfd_reloc_code_real_type relaxed_bfd_r_type
;
6032 reloc_howto_type
*howto
;
6033 unsigned long r_symndx
;
6034 Elf_Internal_Sym
*sym
;
6036 struct elf_link_hash_entry
*h
;
6038 bfd_reloc_status_type r
;
6041 bfd_boolean unresolved_reloc
= FALSE
;
6042 char *error_message
= NULL
;
6044 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
6045 r_type
= ELFNN_R_TYPE (rel
->r_info
);
6047 bfd_reloc
.howto
= elfNN_aarch64_howto_from_type (r_type
);
6048 howto
= bfd_reloc
.howto
;
6052 (*_bfd_error_handler
)
6053 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
6054 input_bfd
, input_section
, r_type
);
6057 bfd_r_type
= elfNN_aarch64_bfd_reloc_from_howto (howto
);
6063 if (r_symndx
< symtab_hdr
->sh_info
)
6065 sym
= local_syms
+ r_symndx
;
6066 sym_type
= ELFNN_ST_TYPE (sym
->st_info
);
6067 sec
= local_sections
[r_symndx
];
6069 /* An object file might have a reference to a local
6070 undefined symbol. This is a daft object file, but we
6071 should at least do something about it. */
6072 if (r_type
!= R_AARCH64_NONE
&& r_type
!= R_AARCH64_NULL
6073 && bfd_is_und_section (sec
)
6074 && ELF_ST_BIND (sym
->st_info
) != STB_WEAK
)
6076 if (!info
->callbacks
->undefined_symbol
6077 (info
, bfd_elf_string_from_elf_section
6078 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
),
6079 input_bfd
, input_section
, rel
->r_offset
, TRUE
))
6083 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6085 /* Relocate against local STT_GNU_IFUNC symbol. */
6086 if (!bfd_link_relocatable (info
)
6087 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
6089 h
= elfNN_aarch64_get_local_sym_hash (globals
, input_bfd
,
6094 /* Set STT_GNU_IFUNC symbol value. */
6095 h
->root
.u
.def
.value
= sym
->st_value
;
6096 h
->root
.u
.def
.section
= sec
;
6101 bfd_boolean warned
, ignored
;
6103 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6104 r_symndx
, symtab_hdr
, sym_hashes
,
6106 unresolved_reloc
, warned
, ignored
);
6111 if (sec
!= NULL
&& discarded_section (sec
))
6112 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
6113 rel
, 1, relend
, howto
, 0, contents
);
6115 if (bfd_link_relocatable (info
))
6119 name
= h
->root
.root
.string
;
6122 name
= (bfd_elf_string_from_elf_section
6123 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
6124 if (name
== NULL
|| *name
== '\0')
6125 name
= bfd_section_name (input_bfd
, sec
);
6129 && r_type
!= R_AARCH64_NONE
6130 && r_type
!= R_AARCH64_NULL
6132 || h
->root
.type
== bfd_link_hash_defined
6133 || h
->root
.type
== bfd_link_hash_defweak
)
6134 && IS_AARCH64_TLS_RELOC (bfd_r_type
) != (sym_type
== STT_TLS
))
6136 (*_bfd_error_handler
)
6137 ((sym_type
== STT_TLS
6138 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6139 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6141 input_section
, (long) rel
->r_offset
, howto
->name
, name
);
6144 /* We relax only if we can see that there can be a valid transition
6145 from a reloc type to another.
6146 We call elfNN_aarch64_final_link_relocate unless we're completely
6147 done, i.e., the relaxation produced the final output we want. */
6149 relaxed_bfd_r_type
= aarch64_tls_transition (input_bfd
, info
, r_type
,
6151 if (relaxed_bfd_r_type
!= bfd_r_type
)
6153 bfd_r_type
= relaxed_bfd_r_type
;
6154 howto
= elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type
);
6155 BFD_ASSERT (howto
!= NULL
);
6156 r_type
= howto
->type
;
6157 r
= elfNN_aarch64_tls_relax (globals
, input_bfd
, contents
, rel
, h
);
6158 unresolved_reloc
= 0;
6161 r
= bfd_reloc_continue
;
6163 /* There may be multiple consecutive relocations for the
6164 same offset. In that case we are supposed to treat the
6165 output of each relocation as the addend for the next. */
6166 if (rel
+ 1 < relend
6167 && rel
->r_offset
== rel
[1].r_offset
6168 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NONE
6169 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NULL
)
6172 save_addend
= FALSE
;
6174 if (r
== bfd_reloc_continue
)
6175 r
= elfNN_aarch64_final_link_relocate (howto
, input_bfd
, output_bfd
,
6176 input_section
, contents
, rel
,
6177 relocation
, info
, sec
,
6178 h
, &unresolved_reloc
,
6179 save_addend
, &addend
, sym
);
6181 switch (elfNN_aarch64_bfd_reloc_from_type (r_type
))
6183 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6184 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6185 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6186 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6187 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6188 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6189 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6190 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6191 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6193 bfd_boolean need_relocs
= FALSE
;
6198 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6199 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6202 (bfd_link_pic (info
) || indx
!= 0) &&
6204 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6205 || h
->root
.type
!= bfd_link_hash_undefweak
);
6207 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6211 Elf_Internal_Rela rela
;
6212 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPMOD
));
6214 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
6215 globals
->root
.sgot
->output_offset
+ off
;
6218 loc
= globals
->root
.srelgot
->contents
;
6219 loc
+= globals
->root
.srelgot
->reloc_count
++
6220 * RELOC_SIZE (htab
);
6221 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6223 bfd_reloc_code_real_type real_type
=
6224 elfNN_aarch64_bfd_reloc_from_type (r_type
);
6226 if (real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
6227 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6228 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
)
6230 /* For local dynamic, don't generate DTPREL in any case.
6231 Initialize the DTPREL slot into zero, so we get module
6232 base address when invoke runtime TLS resolver. */
6233 bfd_put_NN (output_bfd
, 0,
6234 globals
->root
.sgot
->contents
+ off
6239 bfd_put_NN (output_bfd
,
6240 relocation
- dtpoff_base (info
),
6241 globals
->root
.sgot
->contents
+ off
6246 /* This TLS symbol is global. We emit a
6247 relocation to fixup the tls offset at load
6250 ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPREL
));
6253 (globals
->root
.sgot
->output_section
->vma
6254 + globals
->root
.sgot
->output_offset
+ off
6257 loc
= globals
->root
.srelgot
->contents
;
6258 loc
+= globals
->root
.srelgot
->reloc_count
++
6259 * RELOC_SIZE (globals
);
6260 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6261 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
6262 globals
->root
.sgot
->contents
+ off
6268 bfd_put_NN (output_bfd
, (bfd_vma
) 1,
6269 globals
->root
.sgot
->contents
+ off
);
6270 bfd_put_NN (output_bfd
,
6271 relocation
- dtpoff_base (info
),
6272 globals
->root
.sgot
->contents
+ off
6276 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6280 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6281 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
6282 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6283 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6284 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6285 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6287 bfd_boolean need_relocs
= FALSE
;
6292 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6294 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6297 (bfd_link_pic (info
) || indx
!= 0) &&
6299 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6300 || h
->root
.type
!= bfd_link_hash_undefweak
);
6302 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6306 Elf_Internal_Rela rela
;
6309 rela
.r_addend
= relocation
- dtpoff_base (info
);
6313 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_TPREL
));
6314 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
6315 globals
->root
.sgot
->output_offset
+ off
;
6317 loc
= globals
->root
.srelgot
->contents
;
6318 loc
+= globals
->root
.srelgot
->reloc_count
++
6319 * RELOC_SIZE (htab
);
6321 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6323 bfd_put_NN (output_bfd
, rela
.r_addend
,
6324 globals
->root
.sgot
->contents
+ off
);
6327 bfd_put_NN (output_bfd
, relocation
- tpoff_base (info
),
6328 globals
->root
.sgot
->contents
+ off
);
6330 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6334 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
6335 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6336 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6337 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
6338 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6339 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6340 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6341 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6343 bfd_boolean need_relocs
= FALSE
;
6344 int indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6345 bfd_vma off
= symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
);
6347 need_relocs
= (h
== NULL
6348 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6349 || h
->root
.type
!= bfd_link_hash_undefweak
);
6351 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6352 BFD_ASSERT (globals
->root
.sgot
!= NULL
);
6357 Elf_Internal_Rela rela
;
6358 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLSDESC
));
6361 rela
.r_offset
= (globals
->root
.sgotplt
->output_section
->vma
6362 + globals
->root
.sgotplt
->output_offset
6363 + off
+ globals
->sgotplt_jump_table_size
);
6366 rela
.r_addend
= relocation
- dtpoff_base (info
);
6368 /* Allocate the next available slot in the PLT reloc
6369 section to hold our R_AARCH64_TLSDESC, the next
6370 available slot is determined from reloc_count,
6371 which we step. But note, reloc_count was
6372 artifically moved down while allocating slots for
6373 real PLT relocs such that all of the PLT relocs
6374 will fit above the initial reloc_count and the
6375 extra stuff will fit below. */
6376 loc
= globals
->root
.srelplt
->contents
;
6377 loc
+= globals
->root
.srelplt
->reloc_count
++
6378 * RELOC_SIZE (globals
);
6380 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6382 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
6383 globals
->root
.sgotplt
->contents
+ off
+
6384 globals
->sgotplt_jump_table_size
);
6385 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
6386 globals
->root
.sgotplt
->contents
+ off
+
6387 globals
->sgotplt_jump_table_size
+
6391 symbol_tlsdesc_got_offset_mark (input_bfd
, h
, r_symndx
);
6398 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6399 because such sections are not SEC_ALLOC and thus ld.so will
6400 not process them. */
6401 if (unresolved_reloc
6402 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
6404 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
6405 +rel
->r_offset
) != (bfd_vma
) - 1)
6407 (*_bfd_error_handler
)
6409 ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6410 input_bfd
, input_section
, (long) rel
->r_offset
, howto
->name
,
6411 h
->root
.root
.string
);
6415 if (r
!= bfd_reloc_ok
&& r
!= bfd_reloc_continue
)
6417 bfd_reloc_code_real_type real_r_type
6418 = elfNN_aarch64_bfd_reloc_from_type (r_type
);
6422 case bfd_reloc_overflow
:
6423 if (!(*info
->callbacks
->reloc_overflow
)
6424 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
, (bfd_vma
) 0,
6425 input_bfd
, input_section
, rel
->r_offset
))
6427 if (real_r_type
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
6428 || real_r_type
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
)
6430 (*info
->callbacks
->warning
)
6432 _("Too many GOT entries for -fpic, "
6433 "please recompile with -fPIC"),
6434 name
, input_bfd
, input_section
, rel
->r_offset
);
6437 /* Overflow can occur when a variable is referenced with a type
6438 that has a larger alignment than the type with which it was
6440 file1.c: extern int foo; int a (void) { return foo; }
6441 file2.c: char bar, foo, baz;
6442 If the variable is placed into a data section at an offset
6443 that is incompatible with the larger alignment requirement
6444 overflow will occur. (Strictly speaking this is not overflow
6445 but rather an alignment problem, but the bfd_reloc_ error
6446 enum does not have a value to cover that situation).
6448 Try to catch this situation here and provide a more helpful
6449 error message to the user. */
6450 if (addend
& ((1 << howto
->rightshift
) - 1)
6451 /* FIXME: Are we testing all of the appropriate reloc
6453 && (real_r_type
== BFD_RELOC_AARCH64_LD_LO19_PCREL
6454 || real_r_type
== BFD_RELOC_AARCH64_LDST16_LO12
6455 || real_r_type
== BFD_RELOC_AARCH64_LDST32_LO12
6456 || real_r_type
== BFD_RELOC_AARCH64_LDST64_LO12
6457 || real_r_type
== BFD_RELOC_AARCH64_LDST128_LO12
))
6459 info
->callbacks
->warning
6460 (info
, _("One possible cause of this error is that the \
6461 symbol is being referenced in the indicated code as if it had a larger \
6462 alignment than was declared where it was defined."),
6463 name
, input_bfd
, input_section
, rel
->r_offset
);
6467 case bfd_reloc_undefined
:
6468 if (!((*info
->callbacks
->undefined_symbol
)
6469 (info
, name
, input_bfd
, input_section
,
6470 rel
->r_offset
, TRUE
)))
6474 case bfd_reloc_outofrange
:
6475 error_message
= _("out of range");
6478 case bfd_reloc_notsupported
:
6479 error_message
= _("unsupported relocation");
6482 case bfd_reloc_dangerous
:
6483 /* error_message should already be set. */
6487 error_message
= _("unknown error");
6491 BFD_ASSERT (error_message
!= NULL
);
6492 if (!((*info
->callbacks
->reloc_dangerous
)
6493 (info
, error_message
, input_bfd
, input_section
,
6507 /* Set the right machine number. */
6510 elfNN_aarch64_object_p (bfd
*abfd
)
6513 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64_ilp32
);
6515 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64
);
6520 /* Function to keep AArch64 specific flags in the ELF header. */
6523 elfNN_aarch64_set_private_flags (bfd
*abfd
, flagword flags
)
6525 if (elf_flags_init (abfd
) && elf_elfheader (abfd
)->e_flags
!= flags
)
6530 elf_elfheader (abfd
)->e_flags
= flags
;
6531 elf_flags_init (abfd
) = TRUE
;
6537 /* Merge backend specific data from an object file to the output
6538 object file when linking. */
6541 elfNN_aarch64_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
6545 bfd_boolean flags_compatible
= TRUE
;
6548 /* Check if we have the same endianess. */
6549 if (!_bfd_generic_verify_endian_match (ibfd
, obfd
))
6552 if (!is_aarch64_elf (ibfd
) || !is_aarch64_elf (obfd
))
6555 /* The input BFD must have had its flags initialised. */
6556 /* The following seems bogus to me -- The flags are initialized in
6557 the assembler but I don't think an elf_flags_init field is
6558 written into the object. */
6559 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6561 in_flags
= elf_elfheader (ibfd
)->e_flags
;
6562 out_flags
= elf_elfheader (obfd
)->e_flags
;
6564 if (!elf_flags_init (obfd
))
6566 /* If the input is the default architecture and had the default
6567 flags then do not bother setting the flags for the output
6568 architecture, instead allow future merges to do this. If no
6569 future merges ever set these flags then they will retain their
6570 uninitialised values, which surprise surprise, correspond
6571 to the default values. */
6572 if (bfd_get_arch_info (ibfd
)->the_default
6573 && elf_elfheader (ibfd
)->e_flags
== 0)
6576 elf_flags_init (obfd
) = TRUE
;
6577 elf_elfheader (obfd
)->e_flags
= in_flags
;
6579 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
6580 && bfd_get_arch_info (obfd
)->the_default
)
6581 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
6582 bfd_get_mach (ibfd
));
6587 /* Identical flags must be compatible. */
6588 if (in_flags
== out_flags
)
6591 /* Check to see if the input BFD actually contains any sections. If
6592 not, its flags may not have been initialised either, but it
6593 cannot actually cause any incompatiblity. Do not short-circuit
6594 dynamic objects; their section list may be emptied by
6595 elf_link_add_object_symbols.
6597 Also check to see if there are no code sections in the input.
6598 In this case there is no need to check for code specific flags.
6599 XXX - do we need to worry about floating-point format compatability
6600 in data sections ? */
6601 if (!(ibfd
->flags
& DYNAMIC
))
6603 bfd_boolean null_input_bfd
= TRUE
;
6604 bfd_boolean only_data_sections
= TRUE
;
6606 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
6608 if ((bfd_get_section_flags (ibfd
, sec
)
6609 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
6610 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
6611 only_data_sections
= FALSE
;
6613 null_input_bfd
= FALSE
;
6617 if (null_input_bfd
|| only_data_sections
)
6621 return flags_compatible
;
6624 /* Display the flags field. */
6627 elfNN_aarch64_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6629 FILE *file
= (FILE *) ptr
;
6630 unsigned long flags
;
6632 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
6634 /* Print normal ELF private data. */
6635 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6637 flags
= elf_elfheader (abfd
)->e_flags
;
6638 /* Ignore init flag - it may not be set, despite the flags field
6639 containing valid data. */
6641 /* xgettext:c-format */
6642 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
6645 fprintf (file
, _("<Unrecognised flag bits set>"));
6652 /* Update the got entry reference counts for the section being removed. */
6655 elfNN_aarch64_gc_sweep_hook (bfd
*abfd
,
6656 struct bfd_link_info
*info
,
6658 const Elf_Internal_Rela
* relocs
)
6660 struct elf_aarch64_link_hash_table
*htab
;
6661 Elf_Internal_Shdr
*symtab_hdr
;
6662 struct elf_link_hash_entry
**sym_hashes
;
6663 struct elf_aarch64_local_symbol
*locals
;
6664 const Elf_Internal_Rela
*rel
, *relend
;
6666 if (bfd_link_relocatable (info
))
6669 htab
= elf_aarch64_hash_table (info
);
6674 elf_section_data (sec
)->local_dynrel
= NULL
;
6676 symtab_hdr
= &elf_symtab_hdr (abfd
);
6677 sym_hashes
= elf_sym_hashes (abfd
);
6679 locals
= elf_aarch64_locals (abfd
);
6681 relend
= relocs
+ sec
->reloc_count
;
6682 for (rel
= relocs
; rel
< relend
; rel
++)
6684 unsigned long r_symndx
;
6685 unsigned int r_type
;
6686 struct elf_link_hash_entry
*h
= NULL
;
6688 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
6690 if (r_symndx
>= symtab_hdr
->sh_info
)
6693 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6694 while (h
->root
.type
== bfd_link_hash_indirect
6695 || h
->root
.type
== bfd_link_hash_warning
)
6696 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6700 Elf_Internal_Sym
*isym
;
6702 /* A local symbol. */
6703 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
6706 /* Check relocation against local STT_GNU_IFUNC symbol. */
6708 && ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
6710 h
= elfNN_aarch64_get_local_sym_hash (htab
, abfd
, rel
, FALSE
);
6718 struct elf_aarch64_link_hash_entry
*eh
;
6719 struct elf_dyn_relocs
**pp
;
6720 struct elf_dyn_relocs
*p
;
6722 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
6724 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
6727 /* Everything must go for SEC. */
6733 r_type
= ELFNN_R_TYPE (rel
->r_info
);
6734 switch (aarch64_tls_transition (abfd
,info
, r_type
, h
,r_symndx
))
6736 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
6737 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
6738 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
6739 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
6740 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
6741 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
6742 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
6743 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
6744 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
6745 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
6746 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6747 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6748 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
6749 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC
:
6750 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6751 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6752 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6753 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6754 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6755 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6756 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6757 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6758 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6759 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
6760 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
6761 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6762 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6763 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6764 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6765 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6766 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6769 if (h
->got
.refcount
> 0)
6770 h
->got
.refcount
-= 1;
6772 if (h
->type
== STT_GNU_IFUNC
)
6774 if (h
->plt
.refcount
> 0)
6775 h
->plt
.refcount
-= 1;
6778 else if (locals
!= NULL
)
6780 if (locals
[r_symndx
].got_refcount
> 0)
6781 locals
[r_symndx
].got_refcount
-= 1;
6785 case BFD_RELOC_AARCH64_CALL26
:
6786 case BFD_RELOC_AARCH64_JUMP26
:
6787 /* If this is a local symbol then we resolve it
6788 directly without creating a PLT entry. */
6792 if (h
->plt
.refcount
> 0)
6793 h
->plt
.refcount
-= 1;
6796 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
6797 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
6798 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
6799 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
6800 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
6801 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
6802 case BFD_RELOC_AARCH64_MOVW_G3
:
6804 case BFD_RELOC_AARCH64_32
:
6806 case BFD_RELOC_AARCH64_NN
:
6807 if (h
!= NULL
&& bfd_link_executable (info
))
6809 if (h
->plt
.refcount
> 0)
6810 h
->plt
.refcount
-= 1;
6822 /* Adjust a symbol defined by a dynamic object and referenced by a
6823 regular object. The current definition is in some section of the
6824 dynamic object, but we're not including those sections. We have to
6825 change the definition to something the rest of the link can
6829 elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6830 struct elf_link_hash_entry
*h
)
6832 struct elf_aarch64_link_hash_table
*htab
;
6835 /* If this is a function, put it in the procedure linkage table. We
6836 will fill in the contents of the procedure linkage table later,
6837 when we know the address of the .got section. */
6838 if (h
->type
== STT_FUNC
|| h
->type
== STT_GNU_IFUNC
|| h
->needs_plt
)
6840 if (h
->plt
.refcount
<= 0
6841 || (h
->type
!= STT_GNU_IFUNC
6842 && (SYMBOL_CALLS_LOCAL (info
, h
)
6843 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6844 && h
->root
.type
== bfd_link_hash_undefweak
))))
6846 /* This case can occur if we saw a CALL26 reloc in
6847 an input file, but the symbol wasn't referred to
6848 by a dynamic object or all references were
6849 garbage collected. In which case we can end up
6851 h
->plt
.offset
= (bfd_vma
) - 1;
6858 /* Otherwise, reset to -1. */
6859 h
->plt
.offset
= (bfd_vma
) - 1;
6862 /* If this is a weak symbol, and there is a real definition, the
6863 processor independent code will have arranged for us to see the
6864 real definition first, and we can just use the same value. */
6865 if (h
->u
.weakdef
!= NULL
)
6867 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6868 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6869 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6870 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6871 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
6872 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6876 /* If we are creating a shared library, we must presume that the
6877 only references to the symbol are via the global offset table.
6878 For such cases we need not do anything here; the relocations will
6879 be handled correctly by relocate_section. */
6880 if (bfd_link_pic (info
))
6883 /* If there are no references to this symbol that do not use the
6884 GOT, we don't need to generate a copy reloc. */
6885 if (!h
->non_got_ref
)
6888 /* If -z nocopyreloc was given, we won't generate them either. */
6889 if (info
->nocopyreloc
)
6895 /* We must allocate the symbol in our .dynbss section, which will
6896 become part of the .bss section of the executable. There will be
6897 an entry for this symbol in the .dynsym section. The dynamic
6898 object will contain position independent code, so all references
6899 from the dynamic object to this symbol will go through the global
6900 offset table. The dynamic linker will use the .dynsym entry to
6901 determine the address it must put in the global offset table, so
6902 both the dynamic object and the regular object will refer to the
6903 same memory location for the variable. */
6905 htab
= elf_aarch64_hash_table (info
);
6907 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
6908 to copy the initial value out of the dynamic object and into the
6909 runtime process image. */
6910 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
6912 htab
->srelbss
->size
+= RELOC_SIZE (htab
);
6918 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
6923 elfNN_aarch64_allocate_local_symbols (bfd
*abfd
, unsigned number
)
6925 struct elf_aarch64_local_symbol
*locals
;
6926 locals
= elf_aarch64_locals (abfd
);
6929 locals
= (struct elf_aarch64_local_symbol
*)
6930 bfd_zalloc (abfd
, number
* sizeof (struct elf_aarch64_local_symbol
));
6933 elf_aarch64_locals (abfd
) = locals
;
6938 /* Create the .got section to hold the global offset table. */
6941 aarch64_elf_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
6943 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
6946 struct elf_link_hash_entry
*h
;
6947 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
6949 /* This function may be called more than once. */
6950 s
= bfd_get_linker_section (abfd
, ".got");
6954 flags
= bed
->dynamic_sec_flags
;
6956 s
= bfd_make_section_anyway_with_flags (abfd
,
6957 (bed
->rela_plts_and_copies_p
6958 ? ".rela.got" : ".rel.got"),
6959 (bed
->dynamic_sec_flags
6962 || ! bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
6966 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
6968 || !bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
6971 htab
->sgot
->size
+= GOT_ENTRY_SIZE
;
6973 if (bed
->want_got_sym
)
6975 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
6976 (or .got.plt) section. We don't do this in the linker script
6977 because we don't want to define the symbol if we are not creating
6978 a global offset table. */
6979 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
,
6980 "_GLOBAL_OFFSET_TABLE_");
6981 elf_hash_table (info
)->hgot
= h
;
6986 if (bed
->want_got_plt
)
6988 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
6990 || !bfd_set_section_alignment (abfd
, s
,
6991 bed
->s
->log_file_align
))
6996 /* The first bit of the global offset table is the header. */
6997 s
->size
+= bed
->got_header_size
;
7002 /* Look through the relocs for a section during the first phase. */
7005 elfNN_aarch64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
7006 asection
*sec
, const Elf_Internal_Rela
*relocs
)
7008 Elf_Internal_Shdr
*symtab_hdr
;
7009 struct elf_link_hash_entry
**sym_hashes
;
7010 const Elf_Internal_Rela
*rel
;
7011 const Elf_Internal_Rela
*rel_end
;
7014 struct elf_aarch64_link_hash_table
*htab
;
7016 if (bfd_link_relocatable (info
))
7019 BFD_ASSERT (is_aarch64_elf (abfd
));
7021 htab
= elf_aarch64_hash_table (info
);
7024 symtab_hdr
= &elf_symtab_hdr (abfd
);
7025 sym_hashes
= elf_sym_hashes (abfd
);
7027 rel_end
= relocs
+ sec
->reloc_count
;
7028 for (rel
= relocs
; rel
< rel_end
; rel
++)
7030 struct elf_link_hash_entry
*h
;
7031 unsigned long r_symndx
;
7032 unsigned int r_type
;
7033 bfd_reloc_code_real_type bfd_r_type
;
7034 Elf_Internal_Sym
*isym
;
7036 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
7037 r_type
= ELFNN_R_TYPE (rel
->r_info
);
7039 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7041 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
7046 if (r_symndx
< symtab_hdr
->sh_info
)
7048 /* A local symbol. */
7049 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
7054 /* Check relocation against local STT_GNU_IFUNC symbol. */
7055 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
7057 h
= elfNN_aarch64_get_local_sym_hash (htab
, abfd
, rel
,
7062 /* Fake a STT_GNU_IFUNC symbol. */
7063 h
->type
= STT_GNU_IFUNC
;
7066 h
->forced_local
= 1;
7067 h
->root
.type
= bfd_link_hash_defined
;
7074 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7075 while (h
->root
.type
== bfd_link_hash_indirect
7076 || h
->root
.type
== bfd_link_hash_warning
)
7077 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7079 /* PR15323, ref flags aren't set for references in the same
7081 h
->root
.non_ir_ref
= 1;
7084 /* Could be done earlier, if h were already available. */
7085 bfd_r_type
= aarch64_tls_transition (abfd
, info
, r_type
, h
, r_symndx
);
7089 /* Create the ifunc sections for static executables. If we
7090 never see an indirect function symbol nor we are building
7091 a static executable, those sections will be empty and
7092 won't appear in output. */
7098 case BFD_RELOC_AARCH64_ADD_LO12
:
7099 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7100 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7101 case BFD_RELOC_AARCH64_CALL26
:
7102 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7103 case BFD_RELOC_AARCH64_JUMP26
:
7104 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7105 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7106 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7107 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7108 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7109 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7110 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7112 case BFD_RELOC_AARCH64_32
:
7114 case BFD_RELOC_AARCH64_NN
:
7115 if (htab
->root
.dynobj
== NULL
)
7116 htab
->root
.dynobj
= abfd
;
7117 if (!_bfd_elf_create_ifunc_sections (htab
->root
.dynobj
, info
))
7122 /* It is referenced by a non-shared object. */
7124 h
->root
.non_ir_ref
= 1;
7130 case BFD_RELOC_AARCH64_32
:
7132 case BFD_RELOC_AARCH64_NN
:
7134 /* We don't need to handle relocs into sections not going into
7135 the "real" output. */
7136 if ((sec
->flags
& SEC_ALLOC
) == 0)
7141 if (!bfd_link_pic (info
))
7144 h
->plt
.refcount
+= 1;
7145 h
->pointer_equality_needed
= 1;
7148 /* No need to do anything if we're not creating a shared
7150 if (! bfd_link_pic (info
))
7154 struct elf_dyn_relocs
*p
;
7155 struct elf_dyn_relocs
**head
;
7157 /* We must copy these reloc types into the output file.
7158 Create a reloc section in dynobj and make room for
7162 if (htab
->root
.dynobj
== NULL
)
7163 htab
->root
.dynobj
= abfd
;
7165 sreloc
= _bfd_elf_make_dynamic_reloc_section
7166 (sec
, htab
->root
.dynobj
, LOG_FILE_ALIGN
, abfd
, /*rela? */ TRUE
);
7172 /* If this is a global symbol, we count the number of
7173 relocations we need for this symbol. */
7176 struct elf_aarch64_link_hash_entry
*eh
;
7177 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
7178 head
= &eh
->dyn_relocs
;
7182 /* Track dynamic relocs needed for local syms too.
7183 We really need local syms available to do this
7189 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
7194 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
7198 /* Beware of type punned pointers vs strict aliasing
7200 vpp
= &(elf_section_data (s
)->local_dynrel
);
7201 head
= (struct elf_dyn_relocs
**) vpp
;
7205 if (p
== NULL
|| p
->sec
!= sec
)
7207 bfd_size_type amt
= sizeof *p
;
7208 p
= ((struct elf_dyn_relocs
*)
7209 bfd_zalloc (htab
->root
.dynobj
, amt
));
7222 /* RR: We probably want to keep a consistency check that
7223 there are no dangling GOT_PAGE relocs. */
7224 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7225 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7226 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7227 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7228 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7229 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7230 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7231 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7232 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7233 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC
:
7234 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7235 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7236 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
7237 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC
:
7238 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7239 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7240 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7241 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
7242 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
7243 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
7244 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
7245 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
7246 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
7247 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
7248 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
7249 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
7250 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
7251 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
7252 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
7253 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
7254 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
7255 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
:
7256 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
:
7257 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
:
7260 unsigned old_got_type
;
7262 got_type
= aarch64_reloc_got_type (bfd_r_type
);
7266 h
->got
.refcount
+= 1;
7267 old_got_type
= elf_aarch64_hash_entry (h
)->got_type
;
7271 struct elf_aarch64_local_symbol
*locals
;
7273 if (!elfNN_aarch64_allocate_local_symbols
7274 (abfd
, symtab_hdr
->sh_info
))
7277 locals
= elf_aarch64_locals (abfd
);
7278 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7279 locals
[r_symndx
].got_refcount
+= 1;
7280 old_got_type
= locals
[r_symndx
].got_type
;
7283 /* If a variable is accessed with both general dynamic TLS
7284 methods, two slots may be created. */
7285 if (GOT_TLS_GD_ANY_P (old_got_type
) && GOT_TLS_GD_ANY_P (got_type
))
7286 got_type
|= old_got_type
;
7288 /* We will already have issued an error message if there
7289 is a TLS/non-TLS mismatch, based on the symbol type.
7290 So just combine any TLS types needed. */
7291 if (old_got_type
!= GOT_UNKNOWN
&& old_got_type
!= GOT_NORMAL
7292 && got_type
!= GOT_NORMAL
)
7293 got_type
|= old_got_type
;
7295 /* If the symbol is accessed by both IE and GD methods, we
7296 are able to relax. Turn off the GD flag, without
7297 messing up with any other kind of TLS types that may be
7299 if ((got_type
& GOT_TLS_IE
) && GOT_TLS_GD_ANY_P (got_type
))
7300 got_type
&= ~ (GOT_TLSDESC_GD
| GOT_TLS_GD
);
7302 if (old_got_type
!= got_type
)
7305 elf_aarch64_hash_entry (h
)->got_type
= got_type
;
7308 struct elf_aarch64_local_symbol
*locals
;
7309 locals
= elf_aarch64_locals (abfd
);
7310 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7311 locals
[r_symndx
].got_type
= got_type
;
7315 if (htab
->root
.dynobj
== NULL
)
7316 htab
->root
.dynobj
= abfd
;
7317 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
7322 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
7323 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
7324 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
7325 case BFD_RELOC_AARCH64_MOVW_G3
:
7326 if (bfd_link_pic (info
))
7328 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7329 (*_bfd_error_handler
)
7330 (_("%B: relocation %s against `%s' can not be used when making "
7331 "a shared object; recompile with -fPIC"),
7332 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7333 (h
) ? h
->root
.root
.string
: "a local symbol");
7334 bfd_set_error (bfd_error_bad_value
);
7338 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
7339 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7340 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
7341 if (h
!= NULL
&& bfd_link_executable (info
))
7343 /* If this reloc is in a read-only section, we might
7344 need a copy reloc. We can't check reliably at this
7345 stage whether the section is read-only, as input
7346 sections have not yet been mapped to output sections.
7347 Tentatively set the flag for now, and correct in
7348 adjust_dynamic_symbol. */
7350 h
->plt
.refcount
+= 1;
7351 h
->pointer_equality_needed
= 1;
7353 /* FIXME:: RR need to handle these in shared libraries
7354 and essentially bomb out as these being non-PIC
7355 relocations in shared libraries. */
7358 case BFD_RELOC_AARCH64_CALL26
:
7359 case BFD_RELOC_AARCH64_JUMP26
:
7360 /* If this is a local symbol then we resolve it
7361 directly without creating a PLT entry. */
7366 if (h
->plt
.refcount
<= 0)
7367 h
->plt
.refcount
= 1;
7369 h
->plt
.refcount
+= 1;
7380 /* Treat mapping symbols as special target symbols. */
7383 elfNN_aarch64_is_target_special_symbol (bfd
*abfd ATTRIBUTE_UNUSED
,
7386 return bfd_is_aarch64_special_symbol_name (sym
->name
,
7387 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
);
7390 /* This is a copy of elf_find_function () from elf.c except that
7391 AArch64 mapping symbols are ignored when looking for function names. */
7394 aarch64_elf_find_function (bfd
*abfd ATTRIBUTE_UNUSED
,
7398 const char **filename_ptr
,
7399 const char **functionname_ptr
)
7401 const char *filename
= NULL
;
7402 asymbol
*func
= NULL
;
7403 bfd_vma low_func
= 0;
7406 for (p
= symbols
; *p
!= NULL
; p
++)
7410 q
= (elf_symbol_type
*) * p
;
7412 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
7417 filename
= bfd_asymbol_name (&q
->symbol
);
7421 /* Skip mapping symbols. */
7422 if ((q
->symbol
.flags
& BSF_LOCAL
)
7423 && (bfd_is_aarch64_special_symbol_name
7424 (q
->symbol
.name
, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
)))
7427 if (bfd_get_section (&q
->symbol
) == section
7428 && q
->symbol
.value
>= low_func
&& q
->symbol
.value
<= offset
)
7430 func
= (asymbol
*) q
;
7431 low_func
= q
->symbol
.value
;
7441 *filename_ptr
= filename
;
7442 if (functionname_ptr
)
7443 *functionname_ptr
= bfd_asymbol_name (func
);
7449 /* Find the nearest line to a particular section and offset, for error
7450 reporting. This code is a duplicate of the code in elf.c, except
7451 that it uses aarch64_elf_find_function. */
7454 elfNN_aarch64_find_nearest_line (bfd
*abfd
,
7458 const char **filename_ptr
,
7459 const char **functionname_ptr
,
7460 unsigned int *line_ptr
,
7461 unsigned int *discriminator_ptr
)
7463 bfd_boolean found
= FALSE
;
7465 if (_bfd_dwarf2_find_nearest_line (abfd
, symbols
, NULL
, section
, offset
,
7466 filename_ptr
, functionname_ptr
,
7467 line_ptr
, discriminator_ptr
,
7468 dwarf_debug_sections
, 0,
7469 &elf_tdata (abfd
)->dwarf2_find_line_info
))
7471 if (!*functionname_ptr
)
7472 aarch64_elf_find_function (abfd
, symbols
, section
, offset
,
7473 *filename_ptr
? NULL
: filename_ptr
,
7479 /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64
7480 toolchain uses DWARF1. */
7482 if (!_bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
7483 &found
, filename_ptr
,
7484 functionname_ptr
, line_ptr
,
7485 &elf_tdata (abfd
)->line_info
))
7488 if (found
&& (*functionname_ptr
|| *line_ptr
))
7491 if (symbols
== NULL
)
7494 if (!aarch64_elf_find_function (abfd
, symbols
, section
, offset
,
7495 filename_ptr
, functionname_ptr
))
7503 elfNN_aarch64_find_inliner_info (bfd
*abfd
,
7504 const char **filename_ptr
,
7505 const char **functionname_ptr
,
7506 unsigned int *line_ptr
)
7509 found
= _bfd_dwarf2_find_inliner_info
7510 (abfd
, filename_ptr
,
7511 functionname_ptr
, line_ptr
, &elf_tdata (abfd
)->dwarf2_find_line_info
);
7517 elfNN_aarch64_post_process_headers (bfd
*abfd
,
7518 struct bfd_link_info
*link_info
)
7520 Elf_Internal_Ehdr
*i_ehdrp
; /* ELF file header, internal form. */
7522 i_ehdrp
= elf_elfheader (abfd
);
7523 i_ehdrp
->e_ident
[EI_ABIVERSION
] = AARCH64_ELF_ABI_VERSION
;
7525 _bfd_elf_post_process_headers (abfd
, link_info
);
7528 static enum elf_reloc_type_class
7529 elfNN_aarch64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
7530 const asection
*rel_sec ATTRIBUTE_UNUSED
,
7531 const Elf_Internal_Rela
*rela
)
7533 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
7535 case AARCH64_R (RELATIVE
):
7536 return reloc_class_relative
;
7537 case AARCH64_R (JUMP_SLOT
):
7538 return reloc_class_plt
;
7539 case AARCH64_R (COPY
):
7540 return reloc_class_copy
;
7542 return reloc_class_normal
;
7546 /* Handle an AArch64 specific section when reading an object file. This is
7547 called when bfd_section_from_shdr finds a section with an unknown
7551 elfNN_aarch64_section_from_shdr (bfd
*abfd
,
7552 Elf_Internal_Shdr
*hdr
,
7553 const char *name
, int shindex
)
7555 /* There ought to be a place to keep ELF backend specific flags, but
7556 at the moment there isn't one. We just keep track of the
7557 sections by their name, instead. Fortunately, the ABI gives
7558 names for all the AArch64 specific sections, so we will probably get
7560 switch (hdr
->sh_type
)
7562 case SHT_AARCH64_ATTRIBUTES
:
7569 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
7575 /* A structure used to record a list of sections, independently
7576 of the next and prev fields in the asection structure. */
7577 typedef struct section_list
7580 struct section_list
*next
;
7581 struct section_list
*prev
;
7585 /* Unfortunately we need to keep a list of sections for which
7586 an _aarch64_elf_section_data structure has been allocated. This
7587 is because it is possible for functions like elfNN_aarch64_write_section
7588 to be called on a section which has had an elf_data_structure
7589 allocated for it (and so the used_by_bfd field is valid) but
7590 for which the AArch64 extended version of this structure - the
7591 _aarch64_elf_section_data structure - has not been allocated. */
7592 static section_list
*sections_with_aarch64_elf_section_data
= NULL
;
7595 record_section_with_aarch64_elf_section_data (asection
*sec
)
7597 struct section_list
*entry
;
7599 entry
= bfd_malloc (sizeof (*entry
));
7603 entry
->next
= sections_with_aarch64_elf_section_data
;
7605 if (entry
->next
!= NULL
)
7606 entry
->next
->prev
= entry
;
7607 sections_with_aarch64_elf_section_data
= entry
;
7610 static struct section_list
*
7611 find_aarch64_elf_section_entry (asection
*sec
)
7613 struct section_list
*entry
;
7614 static struct section_list
*last_entry
= NULL
;
7616 /* This is a short cut for the typical case where the sections are added
7617 to the sections_with_aarch64_elf_section_data list in forward order and
7618 then looked up here in backwards order. This makes a real difference
7619 to the ld-srec/sec64k.exp linker test. */
7620 entry
= sections_with_aarch64_elf_section_data
;
7621 if (last_entry
!= NULL
)
7623 if (last_entry
->sec
== sec
)
7625 else if (last_entry
->next
!= NULL
&& last_entry
->next
->sec
== sec
)
7626 entry
= last_entry
->next
;
7629 for (; entry
; entry
= entry
->next
)
7630 if (entry
->sec
== sec
)
7634 /* Record the entry prior to this one - it is the entry we are
7635 most likely to want to locate next time. Also this way if we
7636 have been called from
7637 unrecord_section_with_aarch64_elf_section_data () we will not
7638 be caching a pointer that is about to be freed. */
7639 last_entry
= entry
->prev
;
7645 unrecord_section_with_aarch64_elf_section_data (asection
*sec
)
7647 struct section_list
*entry
;
7649 entry
= find_aarch64_elf_section_entry (sec
);
7653 if (entry
->prev
!= NULL
)
7654 entry
->prev
->next
= entry
->next
;
7655 if (entry
->next
!= NULL
)
7656 entry
->next
->prev
= entry
->prev
;
7657 if (entry
== sections_with_aarch64_elf_section_data
)
7658 sections_with_aarch64_elf_section_data
= entry
->next
;
7667 struct bfd_link_info
*info
;
7670 int (*func
) (void *, const char *, Elf_Internal_Sym
*,
7671 asection
*, struct elf_link_hash_entry
*);
7672 } output_arch_syminfo
;
7674 enum map_symbol_type
7681 /* Output a single mapping symbol. */
7684 elfNN_aarch64_output_map_sym (output_arch_syminfo
*osi
,
7685 enum map_symbol_type type
, bfd_vma offset
)
7687 static const char *names
[2] = { "$x", "$d" };
7688 Elf_Internal_Sym sym
;
7690 sym
.st_value
= (osi
->sec
->output_section
->vma
7691 + osi
->sec
->output_offset
+ offset
);
7694 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
7695 sym
.st_shndx
= osi
->sec_shndx
;
7696 return osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
) == 1;
7699 /* Output a single local symbol for a generated stub. */
7702 elfNN_aarch64_output_stub_sym (output_arch_syminfo
*osi
, const char *name
,
7703 bfd_vma offset
, bfd_vma size
)
7705 Elf_Internal_Sym sym
;
7707 sym
.st_value
= (osi
->sec
->output_section
->vma
7708 + osi
->sec
->output_offset
+ offset
);
7711 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
7712 sym
.st_shndx
= osi
->sec_shndx
;
7713 return osi
->func (osi
->finfo
, name
, &sym
, osi
->sec
, NULL
) == 1;
7717 aarch64_map_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
7719 struct elf_aarch64_stub_hash_entry
*stub_entry
;
7723 output_arch_syminfo
*osi
;
7725 /* Massage our args to the form they really have. */
7726 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
7727 osi
= (output_arch_syminfo
*) in_arg
;
7729 stub_sec
= stub_entry
->stub_sec
;
7731 /* Ensure this stub is attached to the current section being
7733 if (stub_sec
!= osi
->sec
)
7736 addr
= (bfd_vma
) stub_entry
->stub_offset
;
7738 stub_name
= stub_entry
->output_name
;
7740 switch (stub_entry
->stub_type
)
7742 case aarch64_stub_adrp_branch
:
7743 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
7744 sizeof (aarch64_adrp_branch_stub
)))
7746 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
7749 case aarch64_stub_long_branch
:
7750 if (!elfNN_aarch64_output_stub_sym
7751 (osi
, stub_name
, addr
, sizeof (aarch64_long_branch_stub
)))
7753 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
7755 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_DATA
, addr
+ 16))
7758 case aarch64_stub_erratum_835769_veneer
:
7759 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
7760 sizeof (aarch64_erratum_835769_stub
)))
7762 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
7765 case aarch64_stub_erratum_843419_veneer
:
7766 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
7767 sizeof (aarch64_erratum_843419_stub
)))
7769 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
7780 /* Output mapping symbols for linker generated sections. */
7783 elfNN_aarch64_output_arch_local_syms (bfd
*output_bfd
,
7784 struct bfd_link_info
*info
,
7786 int (*func
) (void *, const char *,
7789 struct elf_link_hash_entry
7792 output_arch_syminfo osi
;
7793 struct elf_aarch64_link_hash_table
*htab
;
7795 htab
= elf_aarch64_hash_table (info
);
7801 /* Long calls stubs. */
7802 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
)
7806 for (stub_sec
= htab
->stub_bfd
->sections
;
7807 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
7809 /* Ignore non-stub sections. */
7810 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
7815 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
7816 (output_bfd
, osi
.sec
->output_section
);
7818 /* The first instruction in a stub is always a branch. */
7819 if (!elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0))
7822 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_map_one_stub
,
7827 /* Finally, output mapping symbols for the PLT. */
7828 if (!htab
->root
.splt
|| htab
->root
.splt
->size
== 0)
7831 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
7832 (output_bfd
, htab
->root
.splt
->output_section
);
7833 osi
.sec
= htab
->root
.splt
;
7835 elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0);
7841 /* Allocate target specific section data. */
7844 elfNN_aarch64_new_section_hook (bfd
*abfd
, asection
*sec
)
7846 if (!sec
->used_by_bfd
)
7848 _aarch64_elf_section_data
*sdata
;
7849 bfd_size_type amt
= sizeof (*sdata
);
7851 sdata
= bfd_zalloc (abfd
, amt
);
7854 sec
->used_by_bfd
= sdata
;
7857 record_section_with_aarch64_elf_section_data (sec
);
7859 return _bfd_elf_new_section_hook (abfd
, sec
);
7864 unrecord_section_via_map_over_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
7866 void *ignore ATTRIBUTE_UNUSED
)
7868 unrecord_section_with_aarch64_elf_section_data (sec
);
7872 elfNN_aarch64_close_and_cleanup (bfd
*abfd
)
7875 bfd_map_over_sections (abfd
,
7876 unrecord_section_via_map_over_sections
, NULL
);
7878 return _bfd_elf_close_and_cleanup (abfd
);
7882 elfNN_aarch64_bfd_free_cached_info (bfd
*abfd
)
7885 bfd_map_over_sections (abfd
,
7886 unrecord_section_via_map_over_sections
, NULL
);
7888 return _bfd_free_cached_info (abfd
);
7891 /* Create dynamic sections. This is different from the ARM backend in that
7892 the got, plt, gotplt and their relocation sections are all created in the
7893 standard part of the bfd elf backend. */
7896 elfNN_aarch64_create_dynamic_sections (bfd
*dynobj
,
7897 struct bfd_link_info
*info
)
7899 struct elf_aarch64_link_hash_table
*htab
;
7901 /* We need to create .got section. */
7902 if (!aarch64_elf_create_got_section (dynobj
, info
))
7905 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
7908 htab
= elf_aarch64_hash_table (info
);
7909 htab
->sdynbss
= bfd_get_linker_section (dynobj
, ".dynbss");
7910 if (!bfd_link_pic (info
))
7911 htab
->srelbss
= bfd_get_linker_section (dynobj
, ".rela.bss");
7913 if (!htab
->sdynbss
|| (!bfd_link_pic (info
) && !htab
->srelbss
))
7920 /* Allocate space in .plt, .got and associated reloc sections for
7924 elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7926 struct bfd_link_info
*info
;
7927 struct elf_aarch64_link_hash_table
*htab
;
7928 struct elf_aarch64_link_hash_entry
*eh
;
7929 struct elf_dyn_relocs
*p
;
7931 /* An example of a bfd_link_hash_indirect symbol is versioned
7932 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
7933 -> __gxx_personality_v0(bfd_link_hash_defined)
7935 There is no need to process bfd_link_hash_indirect symbols here
7936 because we will also be presented with the concrete instance of
7937 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
7938 called to copy all relevant data from the generic to the concrete
7941 if (h
->root
.type
== bfd_link_hash_indirect
)
7944 if (h
->root
.type
== bfd_link_hash_warning
)
7945 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7947 info
= (struct bfd_link_info
*) inf
;
7948 htab
= elf_aarch64_hash_table (info
);
7950 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
7951 here if it is defined and referenced in a non-shared object. */
7952 if (h
->type
== STT_GNU_IFUNC
7955 else if (htab
->root
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
7957 /* Make sure this symbol is output as a dynamic symbol.
7958 Undefined weak syms won't yet be marked as dynamic. */
7959 if (h
->dynindx
== -1 && !h
->forced_local
)
7961 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
7965 if (bfd_link_pic (info
) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
7967 asection
*s
= htab
->root
.splt
;
7969 /* If this is the first .plt entry, make room for the special
7972 s
->size
+= htab
->plt_header_size
;
7974 h
->plt
.offset
= s
->size
;
7976 /* If this symbol is not defined in a regular file, and we are
7977 not generating a shared library, then set the symbol to this
7978 location in the .plt. This is required to make function
7979 pointers compare as equal between the normal executable and
7980 the shared library. */
7981 if (!bfd_link_pic (info
) && !h
->def_regular
)
7983 h
->root
.u
.def
.section
= s
;
7984 h
->root
.u
.def
.value
= h
->plt
.offset
;
7987 /* Make room for this entry. For now we only create the
7988 small model PLT entries. We later need to find a way
7989 of relaxing into these from the large model PLT entries. */
7990 s
->size
+= PLT_SMALL_ENTRY_SIZE
;
7992 /* We also need to make an entry in the .got.plt section, which
7993 will be placed in the .got section by the linker script. */
7994 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
;
7996 /* We also need to make an entry in the .rela.plt section. */
7997 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
7999 /* We need to ensure that all GOT entries that serve the PLT
8000 are consecutive with the special GOT slots [0] [1] and
8001 [2]. Any addtional relocations, such as
8002 R_AARCH64_TLSDESC, must be placed after the PLT related
8003 entries. We abuse the reloc_count such that during
8004 sizing we adjust reloc_count to indicate the number of
8005 PLT related reserved entries. In subsequent phases when
8006 filling in the contents of the reloc entries, PLT related
8007 entries are placed by computing their PLT index (0
8008 .. reloc_count). While other none PLT relocs are placed
8009 at the slot indicated by reloc_count and reloc_count is
8012 htab
->root
.srelplt
->reloc_count
++;
8016 h
->plt
.offset
= (bfd_vma
) - 1;
8022 h
->plt
.offset
= (bfd_vma
) - 1;
8026 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8027 eh
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8029 if (h
->got
.refcount
> 0)
8032 unsigned got_type
= elf_aarch64_hash_entry (h
)->got_type
;
8034 h
->got
.offset
= (bfd_vma
) - 1;
8036 dyn
= htab
->root
.dynamic_sections_created
;
8038 /* Make sure this symbol is output as a dynamic symbol.
8039 Undefined weak syms won't yet be marked as dynamic. */
8040 if (dyn
&& h
->dynindx
== -1 && !h
->forced_local
)
8042 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
8046 if (got_type
== GOT_UNKNOWN
)
8049 else if (got_type
== GOT_NORMAL
)
8051 h
->got
.offset
= htab
->root
.sgot
->size
;
8052 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8053 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8054 || h
->root
.type
!= bfd_link_hash_undefweak
)
8055 && (bfd_link_pic (info
)
8056 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8058 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8064 if (got_type
& GOT_TLSDESC_GD
)
8066 eh
->tlsdesc_got_jump_table_offset
=
8067 (htab
->root
.sgotplt
->size
8068 - aarch64_compute_jump_table_size (htab
));
8069 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8070 h
->got
.offset
= (bfd_vma
) - 2;
8073 if (got_type
& GOT_TLS_GD
)
8075 h
->got
.offset
= htab
->root
.sgot
->size
;
8076 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8079 if (got_type
& GOT_TLS_IE
)
8081 h
->got
.offset
= htab
->root
.sgot
->size
;
8082 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8085 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
8086 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8087 || h
->root
.type
!= bfd_link_hash_undefweak
)
8088 && (bfd_link_pic (info
)
8090 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8092 if (got_type
& GOT_TLSDESC_GD
)
8094 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8095 /* Note reloc_count not incremented here! We have
8096 already adjusted reloc_count for this relocation
8099 /* TLSDESC PLT is now needed, but not yet determined. */
8100 htab
->tlsdesc_plt
= (bfd_vma
) - 1;
8103 if (got_type
& GOT_TLS_GD
)
8104 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
8106 if (got_type
& GOT_TLS_IE
)
8107 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8113 h
->got
.offset
= (bfd_vma
) - 1;
8116 if (eh
->dyn_relocs
== NULL
)
8119 /* In the shared -Bsymbolic case, discard space allocated for
8120 dynamic pc-relative relocs against symbols which turn out to be
8121 defined in regular objects. For the normal shared case, discard
8122 space for pc-relative relocs that have become local due to symbol
8123 visibility changes. */
8125 if (bfd_link_pic (info
))
8127 /* Relocs that use pc_count are those that appear on a call
8128 insn, or certain REL relocs that can generated via assembly.
8129 We want calls to protected symbols to resolve directly to the
8130 function rather than going via the plt. If people want
8131 function pointer comparisons to work as expected then they
8132 should avoid writing weird assembly. */
8133 if (SYMBOL_CALLS_LOCAL (info
, h
))
8135 struct elf_dyn_relocs
**pp
;
8137 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
8139 p
->count
-= p
->pc_count
;
8148 /* Also discard relocs on undefined weak syms with non-default
8150 if (eh
->dyn_relocs
!= NULL
&& h
->root
.type
== bfd_link_hash_undefweak
)
8152 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8153 eh
->dyn_relocs
= NULL
;
8155 /* Make sure undefined weak symbols are output as a dynamic
8157 else if (h
->dynindx
== -1
8159 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8164 else if (ELIMINATE_COPY_RELOCS
)
8166 /* For the non-shared case, discard space for relocs against
8167 symbols which turn out to need copy relocs or are not
8173 || (htab
->root
.dynamic_sections_created
8174 && (h
->root
.type
== bfd_link_hash_undefweak
8175 || h
->root
.type
== bfd_link_hash_undefined
))))
8177 /* Make sure this symbol is output as a dynamic symbol.
8178 Undefined weak syms won't yet be marked as dynamic. */
8179 if (h
->dynindx
== -1
8181 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8184 /* If that succeeded, we know we'll be keeping all the
8186 if (h
->dynindx
!= -1)
8190 eh
->dyn_relocs
= NULL
;
8195 /* Finally, allocate space. */
8196 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8200 sreloc
= elf_section_data (p
->sec
)->sreloc
;
8202 BFD_ASSERT (sreloc
!= NULL
);
8204 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
8210 /* Allocate space in .plt, .got and associated reloc sections for
8211 ifunc dynamic relocs. */
8214 elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry
*h
,
8217 struct bfd_link_info
*info
;
8218 struct elf_aarch64_link_hash_table
*htab
;
8219 struct elf_aarch64_link_hash_entry
*eh
;
8221 /* An example of a bfd_link_hash_indirect symbol is versioned
8222 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8223 -> __gxx_personality_v0(bfd_link_hash_defined)
8225 There is no need to process bfd_link_hash_indirect symbols here
8226 because we will also be presented with the concrete instance of
8227 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8228 called to copy all relevant data from the generic to the concrete
8231 if (h
->root
.type
== bfd_link_hash_indirect
)
8234 if (h
->root
.type
== bfd_link_hash_warning
)
8235 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8237 info
= (struct bfd_link_info
*) inf
;
8238 htab
= elf_aarch64_hash_table (info
);
8240 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8242 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8243 here if it is defined and referenced in a non-shared object. */
8244 if (h
->type
== STT_GNU_IFUNC
8246 return _bfd_elf_allocate_ifunc_dyn_relocs (info
, h
,
8248 htab
->plt_entry_size
,
8249 htab
->plt_header_size
,
8254 /* Allocate space in .plt, .got and associated reloc sections for
8255 local dynamic relocs. */
8258 elfNN_aarch64_allocate_local_dynrelocs (void **slot
, void *inf
)
8260 struct elf_link_hash_entry
*h
8261 = (struct elf_link_hash_entry
*) *slot
;
8263 if (h
->type
!= STT_GNU_IFUNC
8267 || h
->root
.type
!= bfd_link_hash_defined
)
8270 return elfNN_aarch64_allocate_dynrelocs (h
, inf
);
8273 /* Allocate space in .plt, .got and associated reloc sections for
8274 local ifunc dynamic relocs. */
8277 elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot
, void *inf
)
8279 struct elf_link_hash_entry
*h
8280 = (struct elf_link_hash_entry
*) *slot
;
8282 if (h
->type
!= STT_GNU_IFUNC
8286 || h
->root
.type
!= bfd_link_hash_defined
)
8289 return elfNN_aarch64_allocate_ifunc_dynrelocs (h
, inf
);
8292 /* Find any dynamic relocs that apply to read-only sections. */
8295 aarch64_readonly_dynrelocs (struct elf_link_hash_entry
* h
, void * inf
)
8297 struct elf_aarch64_link_hash_entry
* eh
;
8298 struct elf_dyn_relocs
* p
;
8300 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8301 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8303 asection
*s
= p
->sec
;
8305 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8307 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
8309 info
->flags
|= DF_TEXTREL
;
8311 /* Not an error, just cut short the traversal. */
8318 /* This is the most important function of all . Innocuosly named
8321 elfNN_aarch64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8322 struct bfd_link_info
*info
)
8324 struct elf_aarch64_link_hash_table
*htab
;
8330 htab
= elf_aarch64_hash_table ((info
));
8331 dynobj
= htab
->root
.dynobj
;
8333 BFD_ASSERT (dynobj
!= NULL
);
8335 if (htab
->root
.dynamic_sections_created
)
8337 if (bfd_link_executable (info
) && !info
->nointerp
)
8339 s
= bfd_get_linker_section (dynobj
, ".interp");
8342 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8343 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8347 /* Set up .got offsets for local syms, and space for local dynamic
8349 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8351 struct elf_aarch64_local_symbol
*locals
= NULL
;
8352 Elf_Internal_Shdr
*symtab_hdr
;
8356 if (!is_aarch64_elf (ibfd
))
8359 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8361 struct elf_dyn_relocs
*p
;
8363 for (p
= (struct elf_dyn_relocs
*)
8364 (elf_section_data (s
)->local_dynrel
); p
!= NULL
; p
= p
->next
)
8366 if (!bfd_is_abs_section (p
->sec
)
8367 && bfd_is_abs_section (p
->sec
->output_section
))
8369 /* Input section has been discarded, either because
8370 it is a copy of a linkonce section or due to
8371 linker script /DISCARD/, so we'll be discarding
8374 else if (p
->count
!= 0)
8376 srel
= elf_section_data (p
->sec
)->sreloc
;
8377 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
8378 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8379 info
->flags
|= DF_TEXTREL
;
8384 locals
= elf_aarch64_locals (ibfd
);
8388 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8389 srel
= htab
->root
.srelgot
;
8390 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
8392 locals
[i
].got_offset
= (bfd_vma
) - 1;
8393 locals
[i
].tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8394 if (locals
[i
].got_refcount
> 0)
8396 unsigned got_type
= locals
[i
].got_type
;
8397 if (got_type
& GOT_TLSDESC_GD
)
8399 locals
[i
].tlsdesc_got_jump_table_offset
=
8400 (htab
->root
.sgotplt
->size
8401 - aarch64_compute_jump_table_size (htab
));
8402 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8403 locals
[i
].got_offset
= (bfd_vma
) - 2;
8406 if (got_type
& GOT_TLS_GD
)
8408 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
8409 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8412 if (got_type
& GOT_TLS_IE
8413 || got_type
& GOT_NORMAL
)
8415 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
8416 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8419 if (got_type
== GOT_UNKNOWN
)
8423 if (bfd_link_pic (info
))
8425 if (got_type
& GOT_TLSDESC_GD
)
8427 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8428 /* Note RELOC_COUNT not incremented here! */
8429 htab
->tlsdesc_plt
= (bfd_vma
) - 1;
8432 if (got_type
& GOT_TLS_GD
)
8433 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
8435 if (got_type
& GOT_TLS_IE
8436 || got_type
& GOT_NORMAL
)
8437 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8442 locals
[i
].got_refcount
= (bfd_vma
) - 1;
8448 /* Allocate global sym .plt and .got entries, and space for global
8449 sym dynamic relocs. */
8450 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_dynrelocs
,
8453 /* Allocate global ifunc sym .plt and .got entries, and space for global
8454 ifunc sym dynamic relocs. */
8455 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_ifunc_dynrelocs
,
8458 /* Allocate .plt and .got entries, and space for local symbols. */
8459 htab_traverse (htab
->loc_hash_table
,
8460 elfNN_aarch64_allocate_local_dynrelocs
,
8463 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8464 htab_traverse (htab
->loc_hash_table
,
8465 elfNN_aarch64_allocate_local_ifunc_dynrelocs
,
8468 /* For every jump slot reserved in the sgotplt, reloc_count is
8469 incremented. However, when we reserve space for TLS descriptors,
8470 it's not incremented, so in order to compute the space reserved
8471 for them, it suffices to multiply the reloc count by the jump
8474 if (htab
->root
.srelplt
)
8475 htab
->sgotplt_jump_table_size
= aarch64_compute_jump_table_size (htab
);
8477 if (htab
->tlsdesc_plt
)
8479 if (htab
->root
.splt
->size
== 0)
8480 htab
->root
.splt
->size
+= PLT_ENTRY_SIZE
;
8482 htab
->tlsdesc_plt
= htab
->root
.splt
->size
;
8483 htab
->root
.splt
->size
+= PLT_TLSDESC_ENTRY_SIZE
;
8485 /* If we're not using lazy TLS relocations, don't generate the
8486 GOT entry required. */
8487 if (!(info
->flags
& DF_BIND_NOW
))
8489 htab
->dt_tlsdesc_got
= htab
->root
.sgot
->size
;
8490 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8494 /* Init mapping symbols information to use later to distingush between
8495 code and data while scanning for errata. */
8496 if (htab
->fix_erratum_835769
|| htab
->fix_erratum_843419
)
8497 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8499 if (!is_aarch64_elf (ibfd
))
8501 bfd_elfNN_aarch64_init_maps (ibfd
);
8504 /* We now have determined the sizes of the various dynamic sections.
8505 Allocate memory for them. */
8507 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8509 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
8512 if (s
== htab
->root
.splt
8513 || s
== htab
->root
.sgot
8514 || s
== htab
->root
.sgotplt
8515 || s
== htab
->root
.iplt
8516 || s
== htab
->root
.igotplt
|| s
== htab
->sdynbss
)
8518 /* Strip this section if we don't need it; see the
8521 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
8523 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
8526 /* We use the reloc_count field as a counter if we need
8527 to copy relocs into the output file. */
8528 if (s
!= htab
->root
.srelplt
)
8533 /* It's not one of our sections, so don't allocate space. */
8539 /* If we don't need this section, strip it from the
8540 output file. This is mostly to handle .rela.bss and
8541 .rela.plt. We must create both sections in
8542 create_dynamic_sections, because they must be created
8543 before the linker maps input sections to output
8544 sections. The linker does that before
8545 adjust_dynamic_symbol is called, and it is that
8546 function which decides whether anything needs to go
8547 into these sections. */
8549 s
->flags
|= SEC_EXCLUDE
;
8553 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8556 /* Allocate memory for the section contents. We use bfd_zalloc
8557 here in case unused entries are not reclaimed before the
8558 section's contents are written out. This should not happen,
8559 but this way if it does, we get a R_AARCH64_NONE reloc instead
8561 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
8562 if (s
->contents
== NULL
)
8566 if (htab
->root
.dynamic_sections_created
)
8568 /* Add some entries to the .dynamic section. We fill in the
8569 values later, in elfNN_aarch64_finish_dynamic_sections, but we
8570 must add the entries now so that we get the correct size for
8571 the .dynamic section. The DT_DEBUG entry is filled in by the
8572 dynamic linker and used by the debugger. */
8573 #define add_dynamic_entry(TAG, VAL) \
8574 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8576 if (bfd_link_executable (info
))
8578 if (!add_dynamic_entry (DT_DEBUG
, 0))
8582 if (htab
->root
.splt
->size
!= 0)
8584 if (!add_dynamic_entry (DT_PLTGOT
, 0)
8585 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8586 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
8587 || !add_dynamic_entry (DT_JMPREL
, 0))
8590 if (htab
->tlsdesc_plt
8591 && (!add_dynamic_entry (DT_TLSDESC_PLT
, 0)
8592 || !add_dynamic_entry (DT_TLSDESC_GOT
, 0)))
8598 if (!add_dynamic_entry (DT_RELA
, 0)
8599 || !add_dynamic_entry (DT_RELASZ
, 0)
8600 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
8603 /* If any dynamic relocs apply to a read-only section,
8604 then we need a DT_TEXTREL entry. */
8605 if ((info
->flags
& DF_TEXTREL
) == 0)
8606 elf_link_hash_traverse (& htab
->root
, aarch64_readonly_dynrelocs
,
8609 if ((info
->flags
& DF_TEXTREL
) != 0)
8611 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8616 #undef add_dynamic_entry
8622 elf_aarch64_update_plt_entry (bfd
*output_bfd
,
8623 bfd_reloc_code_real_type r_type
,
8624 bfd_byte
*plt_entry
, bfd_vma value
)
8626 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (r_type
);
8628 _bfd_aarch64_elf_put_addend (output_bfd
, plt_entry
, r_type
, howto
, value
);
8632 elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry
*h
,
8633 struct elf_aarch64_link_hash_table
8634 *htab
, bfd
*output_bfd
,
8635 struct bfd_link_info
*info
)
8637 bfd_byte
*plt_entry
;
8640 bfd_vma gotplt_entry_address
;
8641 bfd_vma plt_entry_address
;
8642 Elf_Internal_Rela rela
;
8644 asection
*plt
, *gotplt
, *relplt
;
8646 /* When building a static executable, use .iplt, .igot.plt and
8647 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8648 if (htab
->root
.splt
!= NULL
)
8650 plt
= htab
->root
.splt
;
8651 gotplt
= htab
->root
.sgotplt
;
8652 relplt
= htab
->root
.srelplt
;
8656 plt
= htab
->root
.iplt
;
8657 gotplt
= htab
->root
.igotplt
;
8658 relplt
= htab
->root
.irelplt
;
8661 /* Get the index in the procedure linkage table which
8662 corresponds to this symbol. This is the index of this symbol
8663 in all the symbols for which we are making plt entries. The
8664 first entry in the procedure linkage table is reserved.
8666 Get the offset into the .got table of the entry that
8667 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
8668 bytes. The first three are reserved for the dynamic linker.
8670 For static executables, we don't reserve anything. */
8672 if (plt
== htab
->root
.splt
)
8674 plt_index
= (h
->plt
.offset
- htab
->plt_header_size
) / htab
->plt_entry_size
;
8675 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
8679 plt_index
= h
->plt
.offset
/ htab
->plt_entry_size
;
8680 got_offset
= plt_index
* GOT_ENTRY_SIZE
;
8683 plt_entry
= plt
->contents
+ h
->plt
.offset
;
8684 plt_entry_address
= plt
->output_section
->vma
8685 + plt
->output_offset
+ h
->plt
.offset
;
8686 gotplt_entry_address
= gotplt
->output_section
->vma
+
8687 gotplt
->output_offset
+ got_offset
;
8689 /* Copy in the boiler-plate for the PLTn entry. */
8690 memcpy (plt_entry
, elfNN_aarch64_small_plt_entry
, PLT_SMALL_ENTRY_SIZE
);
8692 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
8693 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
8694 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
8696 PG (gotplt_entry_address
) -
8697 PG (plt_entry_address
));
8699 /* Fill in the lo12 bits for the load from the pltgot. */
8700 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
8702 PG_OFFSET (gotplt_entry_address
));
8704 /* Fill in the lo12 bits for the add from the pltgot entry. */
8705 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
8707 PG_OFFSET (gotplt_entry_address
));
8709 /* All the GOTPLT Entries are essentially initialized to PLT0. */
8710 bfd_put_NN (output_bfd
,
8711 plt
->output_section
->vma
+ plt
->output_offset
,
8712 gotplt
->contents
+ got_offset
);
8714 rela
.r_offset
= gotplt_entry_address
;
8716 if (h
->dynindx
== -1
8717 || ((bfd_link_executable (info
)
8718 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8720 && h
->type
== STT_GNU_IFUNC
))
8722 /* If an STT_GNU_IFUNC symbol is locally defined, generate
8723 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
8724 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
8725 rela
.r_addend
= (h
->root
.u
.def
.value
8726 + h
->root
.u
.def
.section
->output_section
->vma
8727 + h
->root
.u
.def
.section
->output_offset
);
8731 /* Fill in the entry in the .rela.plt section. */
8732 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (JUMP_SLOT
));
8736 /* Compute the relocation entry to used based on PLT index and do
8737 not adjust reloc_count. The reloc_count has already been adjusted
8738 to account for this entry. */
8739 loc
= relplt
->contents
+ plt_index
* RELOC_SIZE (htab
);
8740 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
8743 /* Size sections even though they're not dynamic. We use it to setup
8744 _TLS_MODULE_BASE_, if needed. */
8747 elfNN_aarch64_always_size_sections (bfd
*output_bfd
,
8748 struct bfd_link_info
*info
)
8752 if (bfd_link_relocatable (info
))
8755 tls_sec
= elf_hash_table (info
)->tls_sec
;
8759 struct elf_link_hash_entry
*tlsbase
;
8761 tlsbase
= elf_link_hash_lookup (elf_hash_table (info
),
8762 "_TLS_MODULE_BASE_", TRUE
, TRUE
, FALSE
);
8766 struct bfd_link_hash_entry
*h
= NULL
;
8767 const struct elf_backend_data
*bed
=
8768 get_elf_backend_data (output_bfd
);
8770 if (!(_bfd_generic_link_add_one_symbol
8771 (info
, output_bfd
, "_TLS_MODULE_BASE_", BSF_LOCAL
,
8772 tls_sec
, 0, NULL
, FALSE
, bed
->collect
, &h
)))
8775 tlsbase
->type
= STT_TLS
;
8776 tlsbase
= (struct elf_link_hash_entry
*) h
;
8777 tlsbase
->def_regular
= 1;
8778 tlsbase
->other
= STV_HIDDEN
;
8779 (*bed
->elf_backend_hide_symbol
) (info
, tlsbase
, TRUE
);
8786 /* Finish up dynamic symbol handling. We set the contents of various
8787 dynamic sections here. */
8789 elfNN_aarch64_finish_dynamic_symbol (bfd
*output_bfd
,
8790 struct bfd_link_info
*info
,
8791 struct elf_link_hash_entry
*h
,
8792 Elf_Internal_Sym
*sym
)
8794 struct elf_aarch64_link_hash_table
*htab
;
8795 htab
= elf_aarch64_hash_table (info
);
8797 if (h
->plt
.offset
!= (bfd_vma
) - 1)
8799 asection
*plt
, *gotplt
, *relplt
;
8801 /* This symbol has an entry in the procedure linkage table. Set
8804 /* When building a static executable, use .iplt, .igot.plt and
8805 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8806 if (htab
->root
.splt
!= NULL
)
8808 plt
= htab
->root
.splt
;
8809 gotplt
= htab
->root
.sgotplt
;
8810 relplt
= htab
->root
.srelplt
;
8814 plt
= htab
->root
.iplt
;
8815 gotplt
= htab
->root
.igotplt
;
8816 relplt
= htab
->root
.irelplt
;
8819 /* This symbol has an entry in the procedure linkage table. Set
8821 if ((h
->dynindx
== -1
8822 && !((h
->forced_local
|| bfd_link_executable (info
))
8824 && h
->type
== STT_GNU_IFUNC
))
8830 elfNN_aarch64_create_small_pltn_entry (h
, htab
, output_bfd
, info
);
8831 if (!h
->def_regular
)
8833 /* Mark the symbol as undefined, rather than as defined in
8834 the .plt section. */
8835 sym
->st_shndx
= SHN_UNDEF
;
8836 /* If the symbol is weak we need to clear the value.
8837 Otherwise, the PLT entry would provide a definition for
8838 the symbol even if the symbol wasn't defined anywhere,
8839 and so the symbol would never be NULL. Leave the value if
8840 there were any relocations where pointer equality matters
8841 (this is a clue for the dynamic linker, to make function
8842 pointer comparisons work between an application and shared
8844 if (!h
->ref_regular_nonweak
|| !h
->pointer_equality_needed
)
8849 if (h
->got
.offset
!= (bfd_vma
) - 1
8850 && elf_aarch64_hash_entry (h
)->got_type
== GOT_NORMAL
)
8852 Elf_Internal_Rela rela
;
8855 /* This symbol has an entry in the global offset table. Set it
8857 if (htab
->root
.sgot
== NULL
|| htab
->root
.srelgot
== NULL
)
8860 rela
.r_offset
= (htab
->root
.sgot
->output_section
->vma
8861 + htab
->root
.sgot
->output_offset
8862 + (h
->got
.offset
& ~(bfd_vma
) 1));
8865 && h
->type
== STT_GNU_IFUNC
)
8867 if (bfd_link_pic (info
))
8869 /* Generate R_AARCH64_GLOB_DAT. */
8876 if (!h
->pointer_equality_needed
)
8879 /* For non-shared object, we can't use .got.plt, which
8880 contains the real function address if we need pointer
8881 equality. We load the GOT entry with the PLT entry. */
8882 plt
= htab
->root
.splt
? htab
->root
.splt
: htab
->root
.iplt
;
8883 bfd_put_NN (output_bfd
, (plt
->output_section
->vma
8884 + plt
->output_offset
8886 htab
->root
.sgot
->contents
8887 + (h
->got
.offset
& ~(bfd_vma
) 1));
8891 else if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
8893 if (!h
->def_regular
)
8896 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
8897 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
8898 rela
.r_addend
= (h
->root
.u
.def
.value
8899 + h
->root
.u
.def
.section
->output_section
->vma
8900 + h
->root
.u
.def
.section
->output_offset
);
8905 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
8906 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
8907 htab
->root
.sgot
->contents
+ h
->got
.offset
);
8908 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (GLOB_DAT
));
8912 loc
= htab
->root
.srelgot
->contents
;
8913 loc
+= htab
->root
.srelgot
->reloc_count
++ * RELOC_SIZE (htab
);
8914 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
8919 Elf_Internal_Rela rela
;
8922 /* This symbol needs a copy reloc. Set it up. */
8924 if (h
->dynindx
== -1
8925 || (h
->root
.type
!= bfd_link_hash_defined
8926 && h
->root
.type
!= bfd_link_hash_defweak
)
8927 || htab
->srelbss
== NULL
)
8930 rela
.r_offset
= (h
->root
.u
.def
.value
8931 + h
->root
.u
.def
.section
->output_section
->vma
8932 + h
->root
.u
.def
.section
->output_offset
);
8933 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (COPY
));
8935 loc
= htab
->srelbss
->contents
;
8936 loc
+= htab
->srelbss
->reloc_count
++ * RELOC_SIZE (htab
);
8937 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
8940 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
8941 be NULL for local symbols. */
8943 && (h
== elf_hash_table (info
)->hdynamic
8944 || h
== elf_hash_table (info
)->hgot
))
8945 sym
->st_shndx
= SHN_ABS
;
8950 /* Finish up local dynamic symbol handling. We set the contents of
8951 various dynamic sections here. */
8954 elfNN_aarch64_finish_local_dynamic_symbol (void **slot
, void *inf
)
8956 struct elf_link_hash_entry
*h
8957 = (struct elf_link_hash_entry
*) *slot
;
8958 struct bfd_link_info
*info
8959 = (struct bfd_link_info
*) inf
;
8961 return elfNN_aarch64_finish_dynamic_symbol (info
->output_bfd
,
8966 elfNN_aarch64_init_small_plt0_entry (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8967 struct elf_aarch64_link_hash_table
8970 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
8971 small and large plts and at the minute just generates
8974 /* PLT0 of the small PLT looks like this in ELF64 -
8975 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
8976 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
8977 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
8979 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
8980 // GOTPLT entry for this.
8982 PLT0 will be slightly different in ELF32 due to different got entry
8985 bfd_vma plt_got_2nd_ent
; /* Address of GOT[2]. */
8989 memcpy (htab
->root
.splt
->contents
, elfNN_aarch64_small_plt0_entry
,
8991 elf_section_data (htab
->root
.splt
->output_section
)->this_hdr
.sh_entsize
=
8994 plt_got_2nd_ent
= (htab
->root
.sgotplt
->output_section
->vma
8995 + htab
->root
.sgotplt
->output_offset
8996 + GOT_ENTRY_SIZE
* 2);
8998 plt_base
= htab
->root
.splt
->output_section
->vma
+
8999 htab
->root
.splt
->output_offset
;
9001 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9002 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9003 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9004 htab
->root
.splt
->contents
+ 4,
9005 PG (plt_got_2nd_ent
) - PG (plt_base
+ 4));
9007 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
9008 htab
->root
.splt
->contents
+ 8,
9009 PG_OFFSET (plt_got_2nd_ent
));
9011 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
9012 htab
->root
.splt
->contents
+ 12,
9013 PG_OFFSET (plt_got_2nd_ent
));
9017 elfNN_aarch64_finish_dynamic_sections (bfd
*output_bfd
,
9018 struct bfd_link_info
*info
)
9020 struct elf_aarch64_link_hash_table
*htab
;
9024 htab
= elf_aarch64_hash_table (info
);
9025 dynobj
= htab
->root
.dynobj
;
9026 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
9028 if (htab
->root
.dynamic_sections_created
)
9030 ElfNN_External_Dyn
*dyncon
, *dynconend
;
9032 if (sdyn
== NULL
|| htab
->root
.sgot
== NULL
)
9035 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
9036 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9037 for (; dyncon
< dynconend
; dyncon
++)
9039 Elf_Internal_Dyn dyn
;
9042 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9050 s
= htab
->root
.sgotplt
;
9051 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9055 dyn
.d_un
.d_ptr
= htab
->root
.srelplt
->output_section
->vma
;
9059 s
= htab
->root
.srelplt
;
9060 dyn
.d_un
.d_val
= s
->size
;
9064 /* The procedure linkage table relocs (DT_JMPREL) should
9065 not be included in the overall relocs (DT_RELA).
9066 Therefore, we override the DT_RELASZ entry here to
9067 make it not include the JMPREL relocs. Since the
9068 linker script arranges for .rela.plt to follow all
9069 other relocation sections, we don't have to worry
9070 about changing the DT_RELA entry. */
9071 if (htab
->root
.srelplt
!= NULL
)
9073 s
= htab
->root
.srelplt
;
9074 dyn
.d_un
.d_val
-= s
->size
;
9078 case DT_TLSDESC_PLT
:
9079 s
= htab
->root
.splt
;
9080 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9081 + htab
->tlsdesc_plt
;
9084 case DT_TLSDESC_GOT
:
9085 s
= htab
->root
.sgot
;
9086 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9087 + htab
->dt_tlsdesc_got
;
9091 bfd_elfNN_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9096 /* Fill in the special first entry in the procedure linkage table. */
9097 if (htab
->root
.splt
&& htab
->root
.splt
->size
> 0)
9099 elfNN_aarch64_init_small_plt0_entry (output_bfd
, htab
);
9101 elf_section_data (htab
->root
.splt
->output_section
)->
9102 this_hdr
.sh_entsize
= htab
->plt_entry_size
;
9105 if (htab
->tlsdesc_plt
)
9107 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
9108 htab
->root
.sgot
->contents
+ htab
->dt_tlsdesc_got
);
9110 memcpy (htab
->root
.splt
->contents
+ htab
->tlsdesc_plt
,
9111 elfNN_aarch64_tlsdesc_small_plt_entry
,
9112 sizeof (elfNN_aarch64_tlsdesc_small_plt_entry
));
9115 bfd_vma adrp1_addr
=
9116 htab
->root
.splt
->output_section
->vma
9117 + htab
->root
.splt
->output_offset
+ htab
->tlsdesc_plt
+ 4;
9119 bfd_vma adrp2_addr
= adrp1_addr
+ 4;
9122 htab
->root
.sgot
->output_section
->vma
9123 + htab
->root
.sgot
->output_offset
;
9125 bfd_vma pltgot_addr
=
9126 htab
->root
.sgotplt
->output_section
->vma
9127 + htab
->root
.sgotplt
->output_offset
;
9129 bfd_vma dt_tlsdesc_got
= got_addr
+ htab
->dt_tlsdesc_got
;
9131 bfd_byte
*plt_entry
=
9132 htab
->root
.splt
->contents
+ htab
->tlsdesc_plt
;
9134 /* adrp x2, DT_TLSDESC_GOT */
9135 elf_aarch64_update_plt_entry (output_bfd
,
9136 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9138 (PG (dt_tlsdesc_got
)
9139 - PG (adrp1_addr
)));
9142 elf_aarch64_update_plt_entry (output_bfd
,
9143 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9146 - PG (adrp2_addr
)));
9148 /* ldr x2, [x2, #0] */
9149 elf_aarch64_update_plt_entry (output_bfd
,
9150 BFD_RELOC_AARCH64_LDSTNN_LO12
,
9152 PG_OFFSET (dt_tlsdesc_got
));
9155 elf_aarch64_update_plt_entry (output_bfd
,
9156 BFD_RELOC_AARCH64_ADD_LO12
,
9158 PG_OFFSET (pltgot_addr
));
9163 if (htab
->root
.sgotplt
)
9165 if (bfd_is_abs_section (htab
->root
.sgotplt
->output_section
))
9167 (*_bfd_error_handler
)
9168 (_("discarded output section: `%A'"), htab
->root
.sgotplt
);
9172 /* Fill in the first three entries in the global offset table. */
9173 if (htab
->root
.sgotplt
->size
> 0)
9175 bfd_put_NN (output_bfd
, (bfd_vma
) 0, htab
->root
.sgotplt
->contents
);
9177 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
9178 bfd_put_NN (output_bfd
,
9180 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
);
9181 bfd_put_NN (output_bfd
,
9183 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
* 2);
9186 if (htab
->root
.sgot
)
9188 if (htab
->root
.sgot
->size
> 0)
9191 sdyn
? sdyn
->output_section
->vma
+ sdyn
->output_offset
: 0;
9192 bfd_put_NN (output_bfd
, addr
, htab
->root
.sgot
->contents
);
9196 elf_section_data (htab
->root
.sgotplt
->output_section
)->
9197 this_hdr
.sh_entsize
= GOT_ENTRY_SIZE
;
9200 if (htab
->root
.sgot
&& htab
->root
.sgot
->size
> 0)
9201 elf_section_data (htab
->root
.sgot
->output_section
)->this_hdr
.sh_entsize
9204 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9205 htab_traverse (htab
->loc_hash_table
,
9206 elfNN_aarch64_finish_local_dynamic_symbol
,
9212 /* Return address for Ith PLT stub in section PLT, for relocation REL
9213 or (bfd_vma) -1 if it should not be included. */
9216 elfNN_aarch64_plt_sym_val (bfd_vma i
, const asection
*plt
,
9217 const arelent
*rel ATTRIBUTE_UNUSED
)
9219 return plt
->vma
+ PLT_ENTRY_SIZE
+ i
* PLT_SMALL_ENTRY_SIZE
;
9223 /* We use this so we can override certain functions
9224 (though currently we don't). */
9226 const struct elf_size_info elfNN_aarch64_size_info
=
9228 sizeof (ElfNN_External_Ehdr
),
9229 sizeof (ElfNN_External_Phdr
),
9230 sizeof (ElfNN_External_Shdr
),
9231 sizeof (ElfNN_External_Rel
),
9232 sizeof (ElfNN_External_Rela
),
9233 sizeof (ElfNN_External_Sym
),
9234 sizeof (ElfNN_External_Dyn
),
9235 sizeof (Elf_External_Note
),
9236 4, /* Hash table entry size. */
9237 1, /* Internal relocs per external relocs. */
9238 ARCH_SIZE
, /* Arch size. */
9239 LOG_FILE_ALIGN
, /* Log_file_align. */
9240 ELFCLASSNN
, EV_CURRENT
,
9241 bfd_elfNN_write_out_phdrs
,
9242 bfd_elfNN_write_shdrs_and_ehdr
,
9243 bfd_elfNN_checksum_contents
,
9244 bfd_elfNN_write_relocs
,
9245 bfd_elfNN_swap_symbol_in
,
9246 bfd_elfNN_swap_symbol_out
,
9247 bfd_elfNN_slurp_reloc_table
,
9248 bfd_elfNN_slurp_symbol_table
,
9249 bfd_elfNN_swap_dyn_in
,
9250 bfd_elfNN_swap_dyn_out
,
9251 bfd_elfNN_swap_reloc_in
,
9252 bfd_elfNN_swap_reloc_out
,
9253 bfd_elfNN_swap_reloca_in
,
9254 bfd_elfNN_swap_reloca_out
9257 #define ELF_ARCH bfd_arch_aarch64
9258 #define ELF_MACHINE_CODE EM_AARCH64
9259 #define ELF_MAXPAGESIZE 0x10000
9260 #define ELF_MINPAGESIZE 0x1000
9261 #define ELF_COMMONPAGESIZE 0x1000
9263 #define bfd_elfNN_close_and_cleanup \
9264 elfNN_aarch64_close_and_cleanup
9266 #define bfd_elfNN_bfd_free_cached_info \
9267 elfNN_aarch64_bfd_free_cached_info
9269 #define bfd_elfNN_bfd_is_target_special_symbol \
9270 elfNN_aarch64_is_target_special_symbol
9272 #define bfd_elfNN_bfd_link_hash_table_create \
9273 elfNN_aarch64_link_hash_table_create
9275 #define bfd_elfNN_bfd_merge_private_bfd_data \
9276 elfNN_aarch64_merge_private_bfd_data
9278 #define bfd_elfNN_bfd_print_private_bfd_data \
9279 elfNN_aarch64_print_private_bfd_data
9281 #define bfd_elfNN_bfd_reloc_type_lookup \
9282 elfNN_aarch64_reloc_type_lookup
9284 #define bfd_elfNN_bfd_reloc_name_lookup \
9285 elfNN_aarch64_reloc_name_lookup
9287 #define bfd_elfNN_bfd_set_private_flags \
9288 elfNN_aarch64_set_private_flags
9290 #define bfd_elfNN_find_inliner_info \
9291 elfNN_aarch64_find_inliner_info
9293 #define bfd_elfNN_find_nearest_line \
9294 elfNN_aarch64_find_nearest_line
9296 #define bfd_elfNN_mkobject \
9297 elfNN_aarch64_mkobject
9299 #define bfd_elfNN_new_section_hook \
9300 elfNN_aarch64_new_section_hook
9302 #define elf_backend_adjust_dynamic_symbol \
9303 elfNN_aarch64_adjust_dynamic_symbol
9305 #define elf_backend_always_size_sections \
9306 elfNN_aarch64_always_size_sections
9308 #define elf_backend_check_relocs \
9309 elfNN_aarch64_check_relocs
9311 #define elf_backend_copy_indirect_symbol \
9312 elfNN_aarch64_copy_indirect_symbol
9314 /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
9315 to them in our hash. */
9316 #define elf_backend_create_dynamic_sections \
9317 elfNN_aarch64_create_dynamic_sections
9319 #define elf_backend_init_index_section \
9320 _bfd_elf_init_2_index_sections
9322 #define elf_backend_finish_dynamic_sections \
9323 elfNN_aarch64_finish_dynamic_sections
9325 #define elf_backend_finish_dynamic_symbol \
9326 elfNN_aarch64_finish_dynamic_symbol
9328 #define elf_backend_gc_sweep_hook \
9329 elfNN_aarch64_gc_sweep_hook
9331 #define elf_backend_object_p \
9332 elfNN_aarch64_object_p
9334 #define elf_backend_output_arch_local_syms \
9335 elfNN_aarch64_output_arch_local_syms
9337 #define elf_backend_plt_sym_val \
9338 elfNN_aarch64_plt_sym_val
9340 #define elf_backend_post_process_headers \
9341 elfNN_aarch64_post_process_headers
9343 #define elf_backend_relocate_section \
9344 elfNN_aarch64_relocate_section
9346 #define elf_backend_reloc_type_class \
9347 elfNN_aarch64_reloc_type_class
9349 #define elf_backend_section_from_shdr \
9350 elfNN_aarch64_section_from_shdr
9352 #define elf_backend_size_dynamic_sections \
9353 elfNN_aarch64_size_dynamic_sections
9355 #define elf_backend_size_info \
9356 elfNN_aarch64_size_info
9358 #define elf_backend_write_section \
9359 elfNN_aarch64_write_section
9361 #define elf_backend_can_refcount 1
9362 #define elf_backend_can_gc_sections 1
9363 #define elf_backend_plt_readonly 1
9364 #define elf_backend_want_got_plt 1
9365 #define elf_backend_want_plt_sym 0
9366 #define elf_backend_may_use_rel_p 0
9367 #define elf_backend_may_use_rela_p 1
9368 #define elf_backend_default_use_rela_p 1
9369 #define elf_backend_rela_normal 1
9370 #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
9371 #define elf_backend_default_execstack 0
9372 #define elf_backend_extern_protected_data 1
9374 #undef elf_backend_obj_attrs_section
9375 #define elf_backend_obj_attrs_section ".ARM.attributes"
9377 #include "elfNN-target.h"
9379 /* CloudABI support. */
9381 #undef TARGET_LITTLE_SYM
9382 #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
9383 #undef TARGET_LITTLE_NAME
9384 #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
9385 #undef TARGET_BIG_SYM
9386 #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
9387 #undef TARGET_BIG_NAME
9388 #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
9391 #define ELF_OSABI ELFOSABI_CLOUDABI
9394 #define elfNN_bed elfNN_aarch64_cloudabi_bed
9396 #include "elfNN-target.h"