1 /* AArch64-specific support for ELF.
2 Copyright (C) 2009-2019 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/>. */
24 #include "elfxx-aarch64.h"
28 #define MASK(n) ((1u << (n)) - 1)
30 /* Sign-extend VALUE, which has the indicated number of BITS. */
33 _bfd_aarch64_sign_extend (bfd_vma value, int bits)
35 if (value & ((bfd_vma) 1 << (bits - 1)))
36 /* VALUE is negative. */
37 value |= ((bfd_vma) - 1) << bits;
42 /* Decode the IMM field of ADRP. */
45 _bfd_aarch64_decode_adrp_imm (uint32_t insn)
47 return (((insn >> 5) & MASK (19)) << 2) | ((insn >> 29) & MASK (2));
50 /* Reencode the imm field of add immediate. */
51 static inline uint32_t
52 reencode_add_imm (uint32_t insn, uint32_t imm)
54 return (insn & ~(MASK (12) << 10)) | ((imm & MASK (12)) << 10);
57 /* Reencode the IMM field of ADR. */
60 _bfd_aarch64_reencode_adr_imm (uint32_t insn, uint32_t imm)
62 return (insn & ~((MASK (2) << 29) | (MASK (19) << 5)))
63 | ((imm & MASK (2)) << 29) | ((imm & (MASK (19) << 2)) << 3);
66 /* Reencode the imm field of ld/st pos immediate. */
67 static inline uint32_t
68 reencode_ldst_pos_imm (uint32_t insn, uint32_t imm)
70 return (insn & ~(MASK (12) << 10)) | ((imm & MASK (12)) << 10);
73 /* Encode the 26-bit offset of unconditional branch. */
74 static inline uint32_t
75 reencode_branch_ofs_26 (uint32_t insn, uint32_t ofs)
77 return (insn & ~MASK (26)) | (ofs & MASK (26));
80 /* Encode the 19-bit offset of conditional branch and compare & branch. */
81 static inline uint32_t
82 reencode_cond_branch_ofs_19 (uint32_t insn, uint32_t ofs)
84 return (insn & ~(MASK (19) << 5)) | ((ofs & MASK (19)) << 5);
87 /* Decode the 19-bit offset of load literal. */
88 static inline uint32_t
89 reencode_ld_lit_ofs_19 (uint32_t insn, uint32_t ofs)
91 return (insn & ~(MASK (19) << 5)) | ((ofs & MASK (19)) << 5);
94 /* Encode the 14-bit offset of test & branch. */
95 static inline uint32_t
96 reencode_tst_branch_ofs_14 (uint32_t insn, uint32_t ofs)
98 return (insn & ~(MASK (14) << 5)) | ((ofs & MASK (14)) << 5);
101 /* Reencode the imm field of move wide. */
102 static inline uint32_t
103 reencode_movw_imm (uint32_t insn, uint32_t imm)
105 return (insn & ~(MASK (16) << 5)) | ((imm & MASK (16)) << 5);
108 /* Reencode mov[zn] to movz. */
109 static inline uint32_t
110 reencode_movzn_to_movz (uint32_t opcode)
112 return opcode | (1 << 30);
115 /* Reencode mov[zn] to movn. */
116 static inline uint32_t
117 reencode_movzn_to_movn (uint32_t opcode)
119 return opcode & ~(1 << 30);
122 /* Return non-zero if the indicated VALUE has overflowed the maximum
123 range expressible by a unsigned number with the indicated number of
126 static bfd_reloc_status_type
127 aarch64_unsigned_overflow (bfd_vma value, unsigned int bits)
130 if (bits >= sizeof (bfd_vma) * 8)
132 lim = (bfd_vma) 1 << bits;
134 return bfd_reloc_overflow;
138 /* Return non-zero if the indicated VALUE has overflowed the maximum
139 range expressible by an signed number with the indicated number of
142 static bfd_reloc_status_type
143 aarch64_signed_overflow (bfd_vma value, unsigned int bits)
145 bfd_signed_vma svalue = (bfd_signed_vma) value;
148 if (bits >= sizeof (bfd_vma) * 8)
150 lim = (bfd_signed_vma) 1 << (bits - 1);
151 if (svalue < -lim || svalue >= lim)
152 return bfd_reloc_overflow;
156 /* Insert the addend/value into the instruction or data object being
158 bfd_reloc_status_type
159 _bfd_aarch64_elf_put_addend (bfd *abfd,
160 bfd_byte *address, bfd_reloc_code_real_type r_type,
161 reloc_howto_type *howto, bfd_signed_vma addend)
163 bfd_reloc_status_type status = bfd_reloc_ok;
164 bfd_signed_vma old_addend = addend;
168 size = bfd_get_reloc_size (howto);
174 contents = bfd_get_16 (abfd, address);
177 if (howto->src_mask != 0xffffffff)
178 /* Must be 32-bit instruction, always little-endian. */
179 contents = bfd_getl32 (address);
181 /* Must be 32-bit data (endianness dependent). */
182 contents = bfd_get_32 (abfd, address);
185 contents = bfd_get_64 (abfd, address);
191 switch (howto->complain_on_overflow)
193 case complain_overflow_dont:
195 case complain_overflow_signed:
196 status = aarch64_signed_overflow (addend,
197 howto->bitsize + howto->rightshift);
199 case complain_overflow_unsigned:
200 status = aarch64_unsigned_overflow (addend,
201 howto->bitsize + howto->rightshift);
203 case complain_overflow_bitfield:
208 addend >>= howto->rightshift;
212 case BFD_RELOC_AARCH64_CALL26:
213 case BFD_RELOC_AARCH64_JUMP26:
214 contents = reencode_branch_ofs_26 (contents, addend);
217 case BFD_RELOC_AARCH64_BRANCH19:
218 contents = reencode_cond_branch_ofs_19 (contents, addend);
221 case BFD_RELOC_AARCH64_TSTBR14:
222 contents = reencode_tst_branch_ofs_14 (contents, addend);
225 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
226 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
227 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
228 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
229 if (old_addend & ((1 << howto->rightshift) - 1))
230 return bfd_reloc_overflow;
231 contents = reencode_ld_lit_ofs_19 (contents, addend);
234 case BFD_RELOC_AARCH64_TLSDESC_CALL:
237 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
238 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
239 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
240 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
241 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
242 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
243 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
244 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
245 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
246 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
247 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
248 contents = _bfd_aarch64_reencode_adr_imm (contents, addend);
251 case BFD_RELOC_AARCH64_ADD_LO12:
252 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
253 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
254 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
255 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
256 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
257 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
258 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
259 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
260 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
261 /* Corresponds to: add rd, rn, #uimm12 to provide the low order
262 12 bits of the page offset following
263 BFD_RELOC_AARCH64_ADR_HI21_PCREL which computes the
264 (pc-relative) page base. */
265 contents = reencode_add_imm (contents, addend);
268 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
269 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
270 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
271 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
272 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
273 case BFD_RELOC_AARCH64_LDST128_LO12:
274 case BFD_RELOC_AARCH64_LDST16_LO12:
275 case BFD_RELOC_AARCH64_LDST32_LO12:
276 case BFD_RELOC_AARCH64_LDST64_LO12:
277 case BFD_RELOC_AARCH64_LDST8_LO12:
278 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
279 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
280 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
281 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
282 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
283 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
284 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
285 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
286 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
287 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
288 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
289 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
290 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12:
291 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC:
292 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12:
293 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC:
294 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12:
295 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC:
296 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12:
297 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC:
298 if (old_addend & ((1 << howto->rightshift) - 1))
299 return bfd_reloc_overflow;
300 /* Used for ldr*|str* rt, [rn, #uimm12] to provide the low order
301 12 bits address offset. */
302 contents = reencode_ldst_pos_imm (contents, addend);
305 /* Group relocations to create high bits of a 16, 32, 48 or 64
306 bit signed data or abs address inline. Will change
307 instruction to MOVN or MOVZ depending on sign of calculated
310 case BFD_RELOC_AARCH64_MOVW_G0_S:
311 case BFD_RELOC_AARCH64_MOVW_G1_S:
312 case BFD_RELOC_AARCH64_MOVW_G2_S:
313 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
314 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
315 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
316 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
317 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
318 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
319 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
320 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
321 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
322 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
323 /* NOTE: We can only come here with movz or movn. */
326 /* Force use of MOVN. */
328 contents = reencode_movzn_to_movn (contents);
332 /* Force use of MOVZ. */
333 contents = reencode_movzn_to_movz (contents);
337 /* Group relocations to create a 16, 32, 48 or 64 bit unsigned
338 data or abs address inline. */
340 case BFD_RELOC_AARCH64_MOVW_G0:
341 case BFD_RELOC_AARCH64_MOVW_G0_NC:
342 case BFD_RELOC_AARCH64_MOVW_G1:
343 case BFD_RELOC_AARCH64_MOVW_G1_NC:
344 case BFD_RELOC_AARCH64_MOVW_G2:
345 case BFD_RELOC_AARCH64_MOVW_G2_NC:
346 case BFD_RELOC_AARCH64_MOVW_G3:
347 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
348 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
349 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
350 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
351 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
352 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
353 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
354 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
355 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
356 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
357 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
358 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
359 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
360 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
361 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
362 contents = reencode_movw_imm (contents, addend);
366 /* Repack simple data */
367 if (howto->dst_mask & (howto->dst_mask + 1))
368 return bfd_reloc_notsupported;
370 contents = ((contents & ~howto->dst_mask) | (addend & howto->dst_mask));
377 bfd_put_16 (abfd, contents, address);
380 if (howto->dst_mask != 0xffffffff)
381 /* must be 32-bit instruction, always little-endian */
382 bfd_putl32 (contents, address);
384 /* must be 32-bit data (endianness dependent) */
385 bfd_put_32 (abfd, contents, address);
388 bfd_put_64 (abfd, contents, address);
398 _bfd_aarch64_elf_resolve_relocation (bfd_reloc_code_real_type r_type,
399 bfd_vma place, bfd_vma value,
400 bfd_vma addend, bfd_boolean weak_undef_p)
404 case BFD_RELOC_AARCH64_NONE:
405 case BFD_RELOC_AARCH64_TLSDESC_CALL:
408 case BFD_RELOC_AARCH64_16_PCREL:
409 case BFD_RELOC_AARCH64_32_PCREL:
410 case BFD_RELOC_AARCH64_64_PCREL:
411 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
412 case BFD_RELOC_AARCH64_BRANCH19:
413 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
414 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
415 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
416 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
417 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
418 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
419 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
420 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
421 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
422 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
423 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
424 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
425 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
426 case BFD_RELOC_AARCH64_TSTBR14:
429 value = value + addend - place;
432 case BFD_RELOC_AARCH64_CALL26:
433 case BFD_RELOC_AARCH64_JUMP26:
434 value = value + addend - place;
437 case BFD_RELOC_AARCH64_16:
438 case BFD_RELOC_AARCH64_32:
439 case BFD_RELOC_AARCH64_MOVW_G0:
440 case BFD_RELOC_AARCH64_MOVW_G0_NC:
441 case BFD_RELOC_AARCH64_MOVW_G0_S:
442 case BFD_RELOC_AARCH64_MOVW_G1:
443 case BFD_RELOC_AARCH64_MOVW_G1_NC:
444 case BFD_RELOC_AARCH64_MOVW_G1_S:
445 case BFD_RELOC_AARCH64_MOVW_G2:
446 case BFD_RELOC_AARCH64_MOVW_G2_NC:
447 case BFD_RELOC_AARCH64_MOVW_G2_S:
448 case BFD_RELOC_AARCH64_MOVW_G3:
449 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
450 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
451 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
452 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
453 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
454 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
455 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
456 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
457 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
458 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
459 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
460 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
461 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
462 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
463 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
464 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
465 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12:
466 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12:
467 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12:
468 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12:
469 value = value + addend;
472 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
473 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
476 value = PG (value + addend) - PG (place);
479 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
480 value = value + addend - place;
483 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
484 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
485 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
486 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
487 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
488 value = PG (value + addend) - PG (place);
491 /* Caller must make sure addend is the base address of .got section. */
492 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
493 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
494 addend = PG (addend);
496 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
497 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
498 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
499 value = value - addend;
502 case BFD_RELOC_AARCH64_ADD_LO12:
503 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
504 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
505 case BFD_RELOC_AARCH64_LDST128_LO12:
506 case BFD_RELOC_AARCH64_LDST16_LO12:
507 case BFD_RELOC_AARCH64_LDST32_LO12:
508 case BFD_RELOC_AARCH64_LDST64_LO12:
509 case BFD_RELOC_AARCH64_LDST8_LO12:
510 case BFD_RELOC_AARCH64_TLSDESC_ADD:
511 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
512 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
513 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
514 case BFD_RELOC_AARCH64_TLSDESC_LDR:
515 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
516 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
517 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
518 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
519 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
520 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
521 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
522 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
523 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC:
524 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC:
525 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC:
526 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC:
527 value = PG_OFFSET (value + addend);
530 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
531 value = value + addend;
534 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
535 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
536 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
537 value = (value + addend) & (bfd_vma) 0xffff0000;
539 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
540 /* Mask off low 12bits, keep all other high bits, so that the later
541 generic code could check whehter there is overflow. */
542 value = (value + addend) & ~(bfd_vma) 0xfff;
545 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
546 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
547 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
548 value = (value + addend) & (bfd_vma) 0xffff;
551 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
552 value = (value + addend) & ~(bfd_vma) 0xffffffff;
553 value -= place & ~(bfd_vma) 0xffffffff;
563 /* Support for core dump NOTE sections. */
566 _bfd_aarch64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
571 switch (note->descsz)
576 case 392: /* sizeof(struct elf_prstatus) on Linux/arm64. */
578 elf_tdata (abfd)->core->signal
579 = bfd_get_16 (abfd, note->descdata + 12);
582 elf_tdata (abfd)->core->lwpid
583 = bfd_get_32 (abfd, note->descdata + 32);
592 /* Make a ".reg/999" section. */
593 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
594 size, note->descpos + offset);
598 _bfd_aarch64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
600 switch (note->descsz)
605 case 136: /* This is sizeof(struct elf_prpsinfo) on Linux/aarch64. */
606 elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
607 elf_tdata (abfd)->core->program
608 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
609 elf_tdata (abfd)->core->command
610 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
613 /* Note that for some reason, a spurious space is tacked
614 onto the end of the args in some (at least one anyway)
615 implementations, so strip it off if it exists. */
618 char *command = elf_tdata (abfd)->core->command;
619 int n = strlen (command);
621 if (0 < n && command[n - 1] == ' ')
622 command[n - 1] = '\0';
629 _bfd_aarch64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
639 char data[136] ATTRIBUTE_NONSTRING;
642 va_start (ap, note_type);
643 memset (data, 0, sizeof (data));
644 strncpy (data + 40, va_arg (ap, const char *), 16);
645 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
647 /* GCC 8.0 and 8.1 warn about 80 equals destination size with
648 -Wstringop-truncation:
649 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643
651 DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION;
653 strncpy (data + 56, va_arg (ap, const char *), 80);
654 #if GCC_VERSION == 8000 || GCC_VERSION == 8001
659 return elfcore_write_note (abfd, buf, bufsiz, "CORE",
660 note_type, data, sizeof (data));
671 va_start (ap, note_type);
672 memset (data, 0, sizeof (data));
673 pid = va_arg (ap, long);
674 bfd_put_32 (abfd, pid, data + 32);
675 cursig = va_arg (ap, int);
676 bfd_put_16 (abfd, cursig, data + 12);
677 greg = va_arg (ap, const void *);
678 memcpy (data + 112, greg, 272);
681 return elfcore_write_note (abfd, buf, bufsiz, "CORE",
682 note_type, data, sizeof (data));
687 /* Find the first input bfd with GNU property and merge it with GPROP. If no
688 such input is found, add it to a new section at the last input. Update
689 GPROP accordingly. */
691 _bfd_aarch64_elf_link_setup_gnu_properties (struct bfd_link_info *info,
699 uint32_t gnu_prop = *gprop;
701 /* Find a normal input file with GNU property note. */
702 for (pbfd = info->input_bfds;
704 pbfd = pbfd->link.next)
705 if (bfd_get_flavour (pbfd) == bfd_target_elf_flavour
706 && bfd_count_sections (pbfd) != 0)
710 if (elf_properties (pbfd) != NULL)
714 /* If ebfd != NULL it is either an input with property note or the last
715 input. Either way if we have gnu_prop, we should add it (by creating
716 a section if needed). */
717 if (ebfd != NULL && gnu_prop)
719 prop = _bfd_elf_get_property (ebfd,
720 GNU_PROPERTY_AARCH64_FEATURE_1_AND,
722 prop->u.number |= gnu_prop;
723 prop->pr_kind = property_number;
725 /* pbfd being NULL implies ebfd is the last input. Create the GNU
726 property note section. */
729 sec = bfd_make_section_with_flags (ebfd,
730 NOTE_GNU_PROPERTY_SECTION_NAME,
738 info->callbacks->einfo (
739 _("%F%P: failed to create GNU property section\n"));
741 elf_section_type (sec) = SHT_NOTE;
745 pbfd = _bfd_elf_link_setup_gnu_properties (info);
747 if (bfd_link_relocatable (info))
750 /* If pbfd has any GNU_PROPERTY_AARCH64_FEATURE_1_AND properties, update
751 gnu_prop accordingly. */
754 elf_property_list *p;
756 /* The property list is sorted in order of type. */
757 for (p = elf_properties (pbfd); p; p = p->next)
759 /* Check for all GNU_PROPERTY_AARCH64_FEATURE_1_AND. */
760 if (GNU_PROPERTY_AARCH64_FEATURE_1_AND == p->property.pr_type)
762 gnu_prop = (p->property.u.number
763 & (GNU_PROPERTY_AARCH64_FEATURE_1_PAC
764 | GNU_PROPERTY_AARCH64_FEATURE_1_BTI));
767 else if (GNU_PROPERTY_AARCH64_FEATURE_1_AND < p->property.pr_type)
775 /* Define elf_backend_parse_gnu_properties for AArch64. */
776 enum elf_property_kind
777 _bfd_aarch64_elf_parse_gnu_properties (bfd *abfd, unsigned int type,
778 bfd_byte *ptr, unsigned int datasz)
784 case GNU_PROPERTY_AARCH64_FEATURE_1_AND:
788 ( _("error: %pB: <corrupt AArch64 used size: 0x%x>"),
790 return property_corrupt;
792 prop = _bfd_elf_get_property (abfd, type, datasz);
793 /* Combine properties of the same type. */
794 prop->u.number |= bfd_h_get_32 (abfd, ptr);
795 prop->pr_kind = property_number;
799 return property_ignored;
802 return property_number;
805 /* Merge AArch64 GNU property BPROP with APROP also accounting for PROP.
806 If APROP isn't NULL, merge it with BPROP and/or PROP. Vice-versa if BROP
807 isn't NULL. Return TRUE if there is any update to APROP or if BPROP should
808 be merge with ABFD. */
810 _bfd_aarch64_elf_merge_gnu_properties (struct bfd_link_info *info
812 bfd *abfd ATTRIBUTE_UNUSED,
817 unsigned int orig_number;
818 bfd_boolean updated = FALSE;
819 unsigned int pr_type = aprop != NULL ? aprop->pr_type : bprop->pr_type;
823 case GNU_PROPERTY_AARCH64_FEATURE_1_AND:
825 if (aprop != NULL && bprop != NULL)
827 orig_number = aprop->u.number;
828 aprop->u.number = (orig_number & bprop->u.number) | prop;
829 updated = orig_number != aprop->u.number;
830 /* Remove the property if all feature bits are cleared. */
831 if (aprop->u.number == 0)
832 aprop->pr_kind = property_remove;
835 /* If either is NULL, the AND would be 0 so, if there is
836 any PROP, asign it to the input that is not NULL. */
841 orig_number = aprop->u.number;
842 aprop->u.number = prop;
843 updated = orig_number != aprop->u.number;
847 bprop->u.number = prop;
851 /* No PROP and BPROP is NULL, so remove APROP. */
852 else if (aprop != NULL)
854 aprop->pr_kind = property_remove;
867 /* Fix up AArch64 GNU properties. */
869 _bfd_aarch64_elf_link_fixup_gnu_properties
870 (struct bfd_link_info *info ATTRIBUTE_UNUSED,
871 elf_property_list **listp)
873 elf_property_list *p, *prev;
875 for (p = *listp, prev = *listp; p; p = p->next)
877 unsigned int type = p->property.pr_type;
878 if (type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)
880 if (p->property.pr_kind == property_remove)
882 /* Remove empty property. */
889 prev->next = p->next;
894 else if (type > GNU_PROPERTY_HIPROC)
896 /* The property list is sorted in order of type. */