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caed7120 | 1 | /* AArch64-specific support for ELF. |
b90efa5b | 2 | Copyright (C) 2009-2015 Free Software Foundation, Inc. |
caed7120 YZ |
3 | Contributed by ARM Ltd. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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/>. */ | |
20 | ||
21 | #include "sysdep.h" | |
22 | #include "elfxx-aarch64.h" | |
d0ae9fbd OJ |
23 | #include <stdarg.h> |
24 | #include <string.h> | |
caed7120 YZ |
25 | |
26 | #define MASK(n) ((1u << (n)) - 1) | |
27 | ||
4106101c MS |
28 | /* Sign-extend VALUE, which has the indicated number of BITS. */ |
29 | ||
30 | bfd_signed_vma | |
31 | _bfd_aarch64_sign_extend (bfd_vma value, int bits) | |
32 | { | |
33 | if (value & ((bfd_vma) 1 << (bits - 1))) | |
34 | /* VALUE is negative. */ | |
35 | value |= ((bfd_vma) - 1) << bits; | |
36 | ||
37 | return value; | |
38 | } | |
39 | ||
40 | /* Decode the IMM field of ADRP. */ | |
41 | ||
42 | uint32_t | |
43 | _bfd_aarch64_decode_adrp_imm (uint32_t insn) | |
44 | { | |
45 | return (((insn >> 5) & MASK (19)) << 2) | ((insn >> 29) & MASK (2)); | |
46 | } | |
47 | ||
caed7120 YZ |
48 | /* Reencode the imm field of add immediate. */ |
49 | static inline uint32_t | |
50 | reencode_add_imm (uint32_t insn, uint32_t imm) | |
51 | { | |
52 | return (insn & ~(MASK (12) << 10)) | ((imm & MASK (12)) << 10); | |
53 | } | |
54 | ||
4106101c MS |
55 | /* Reencode the IMM field of ADR. */ |
56 | ||
57 | uint32_t | |
58 | _bfd_aarch64_reencode_adr_imm (uint32_t insn, uint32_t imm) | |
caed7120 YZ |
59 | { |
60 | return (insn & ~((MASK (2) << 29) | (MASK (19) << 5))) | |
61 | | ((imm & MASK (2)) << 29) | ((imm & (MASK (19) << 2)) << 3); | |
62 | } | |
63 | ||
64 | /* Reencode the imm field of ld/st pos immediate. */ | |
65 | static inline uint32_t | |
66 | reencode_ldst_pos_imm (uint32_t insn, uint32_t imm) | |
67 | { | |
68 | return (insn & ~(MASK (12) << 10)) | ((imm & MASK (12)) << 10); | |
69 | } | |
70 | ||
71 | /* Encode the 26-bit offset of unconditional branch. */ | |
72 | static inline uint32_t | |
73 | reencode_branch_ofs_26 (uint32_t insn, uint32_t ofs) | |
74 | { | |
75 | return (insn & ~MASK (26)) | (ofs & MASK (26)); | |
76 | } | |
77 | ||
78 | /* Encode the 19-bit offset of conditional branch and compare & branch. */ | |
79 | static inline uint32_t | |
80 | reencode_cond_branch_ofs_19 (uint32_t insn, uint32_t ofs) | |
81 | { | |
82 | return (insn & ~(MASK (19) << 5)) | ((ofs & MASK (19)) << 5); | |
83 | } | |
84 | ||
85 | /* Decode the 19-bit offset of load literal. */ | |
86 | static inline uint32_t | |
87 | reencode_ld_lit_ofs_19 (uint32_t insn, uint32_t ofs) | |
88 | { | |
89 | return (insn & ~(MASK (19) << 5)) | ((ofs & MASK (19)) << 5); | |
90 | } | |
91 | ||
92 | /* Encode the 14-bit offset of test & branch. */ | |
93 | static inline uint32_t | |
94 | reencode_tst_branch_ofs_14 (uint32_t insn, uint32_t ofs) | |
95 | { | |
96 | return (insn & ~(MASK (14) << 5)) | ((ofs & MASK (14)) << 5); | |
97 | } | |
98 | ||
99 | /* Reencode the imm field of move wide. */ | |
100 | static inline uint32_t | |
101 | reencode_movw_imm (uint32_t insn, uint32_t imm) | |
102 | { | |
103 | return (insn & ~(MASK (16) << 5)) | ((imm & MASK (16)) << 5); | |
104 | } | |
105 | ||
106 | /* Reencode mov[zn] to movz. */ | |
107 | static inline uint32_t | |
108 | reencode_movzn_to_movz (uint32_t opcode) | |
109 | { | |
110 | return opcode | (1 << 30); | |
111 | } | |
112 | ||
113 | /* Reencode mov[zn] to movn. */ | |
114 | static inline uint32_t | |
115 | reencode_movzn_to_movn (uint32_t opcode) | |
116 | { | |
117 | return opcode & ~(1 << 30); | |
118 | } | |
119 | ||
120 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
121 | range expressible by a unsigned number with the indicated number of | |
122 | BITS. */ | |
123 | ||
124 | static bfd_reloc_status_type | |
125 | aarch64_unsigned_overflow (bfd_vma value, unsigned int bits) | |
126 | { | |
127 | bfd_vma lim; | |
128 | if (bits >= sizeof (bfd_vma) * 8) | |
129 | return bfd_reloc_ok; | |
130 | lim = (bfd_vma) 1 << bits; | |
131 | if (value >= lim) | |
132 | return bfd_reloc_overflow; | |
133 | return bfd_reloc_ok; | |
134 | } | |
135 | ||
136 | /* Return non-zero if the indicated VALUE has overflowed the maximum | |
137 | range expressible by an signed number with the indicated number of | |
138 | BITS. */ | |
139 | ||
140 | static bfd_reloc_status_type | |
141 | aarch64_signed_overflow (bfd_vma value, unsigned int bits) | |
142 | { | |
143 | bfd_signed_vma svalue = (bfd_signed_vma) value; | |
144 | bfd_signed_vma lim; | |
145 | ||
146 | if (bits >= sizeof (bfd_vma) * 8) | |
147 | return bfd_reloc_ok; | |
148 | lim = (bfd_signed_vma) 1 << (bits - 1); | |
149 | if (svalue < -lim || svalue >= lim) | |
150 | return bfd_reloc_overflow; | |
151 | return bfd_reloc_ok; | |
152 | } | |
153 | ||
154 | /* Insert the addend/value into the instruction or data object being | |
155 | relocated. */ | |
156 | bfd_reloc_status_type | |
157 | _bfd_aarch64_elf_put_addend (bfd *abfd, | |
158 | bfd_byte *address, bfd_reloc_code_real_type r_type, | |
159 | reloc_howto_type *howto, bfd_signed_vma addend) | |
160 | { | |
161 | bfd_reloc_status_type status = bfd_reloc_ok; | |
162 | bfd_signed_vma old_addend = addend; | |
163 | bfd_vma contents; | |
164 | int size; | |
165 | ||
166 | size = bfd_get_reloc_size (howto); | |
167 | switch (size) | |
168 | { | |
6346d5ca AM |
169 | case 0: |
170 | return status; | |
caed7120 YZ |
171 | case 2: |
172 | contents = bfd_get_16 (abfd, address); | |
173 | break; | |
174 | case 4: | |
175 | if (howto->src_mask != 0xffffffff) | |
176 | /* Must be 32-bit instruction, always little-endian. */ | |
177 | contents = bfd_getl32 (address); | |
178 | else | |
179 | /* Must be 32-bit data (endianness dependent). */ | |
180 | contents = bfd_get_32 (abfd, address); | |
181 | break; | |
182 | case 8: | |
183 | contents = bfd_get_64 (abfd, address); | |
184 | break; | |
185 | default: | |
186 | abort (); | |
187 | } | |
188 | ||
189 | switch (howto->complain_on_overflow) | |
190 | { | |
191 | case complain_overflow_dont: | |
192 | break; | |
193 | case complain_overflow_signed: | |
194 | status = aarch64_signed_overflow (addend, | |
195 | howto->bitsize + howto->rightshift); | |
196 | break; | |
197 | case complain_overflow_unsigned: | |
198 | status = aarch64_unsigned_overflow (addend, | |
199 | howto->bitsize + howto->rightshift); | |
200 | break; | |
201 | case complain_overflow_bitfield: | |
202 | default: | |
203 | abort (); | |
204 | } | |
205 | ||
206 | addend >>= howto->rightshift; | |
207 | ||
208 | switch (r_type) | |
209 | { | |
caed7120 | 210 | case BFD_RELOC_AARCH64_CALL26: |
ce336788 | 211 | case BFD_RELOC_AARCH64_JUMP26: |
caed7120 YZ |
212 | contents = reencode_branch_ofs_26 (contents, addend); |
213 | break; | |
214 | ||
215 | case BFD_RELOC_AARCH64_BRANCH19: | |
216 | contents = reencode_cond_branch_ofs_19 (contents, addend); | |
217 | break; | |
218 | ||
219 | case BFD_RELOC_AARCH64_TSTBR14: | |
220 | contents = reencode_tst_branch_ofs_14 (contents, addend); | |
221 | break; | |
222 | ||
caed7120 | 223 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: |
ce336788 JW |
224 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: |
225 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: | |
043bf05a | 226 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
caed7120 YZ |
227 | if (old_addend & ((1 << howto->rightshift) - 1)) |
228 | return bfd_reloc_overflow; | |
229 | contents = reencode_ld_lit_ofs_19 (contents, addend); | |
230 | break; | |
231 | ||
232 | case BFD_RELOC_AARCH64_TLSDESC_CALL: | |
233 | break; | |
234 | ||
ce336788 JW |
235 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: |
236 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: | |
237 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: | |
238 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
239 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
389b8029 | 240 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
caed7120 | 241 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: |
ce336788 | 242 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
caed7120 | 243 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: |
4106101c | 244 | contents = _bfd_aarch64_reencode_adr_imm (contents, addend); |
caed7120 YZ |
245 | break; |
246 | ||
ce336788 JW |
247 | case BFD_RELOC_AARCH64_ADD_LO12: |
248 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: | |
caed7120 | 249 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: |
caed7120 | 250 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: |
ce336788 | 251 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
caed7120 | 252 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: |
caed7120 YZ |
253 | /* Corresponds to: add rd, rn, #uimm12 to provide the low order |
254 | 12 bits of the page offset following | |
255 | BFD_RELOC_AARCH64_ADR_HI21_PCREL which computes the | |
256 | (pc-relative) page base. */ | |
257 | contents = reencode_add_imm (contents, addend); | |
258 | break; | |
259 | ||
ce336788 JW |
260 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
261 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: | |
262 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
caed7120 YZ |
263 | case BFD_RELOC_AARCH64_LDST16_LO12: |
264 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
265 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 266 | case BFD_RELOC_AARCH64_LDST8_LO12: |
caed7120 | 267 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
ce336788 | 268 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
caed7120 | 269 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 270 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
caed7120 YZ |
271 | if (old_addend & ((1 << howto->rightshift) - 1)) |
272 | return bfd_reloc_overflow; | |
273 | /* Used for ldr*|str* rt, [rn, #uimm12] to provide the low order | |
274 | 12 bits of the page offset following BFD_RELOC_AARCH64_ADR_HI21_PCREL | |
275 | which computes the (pc-relative) page base. */ | |
276 | contents = reencode_ldst_pos_imm (contents, addend); | |
277 | break; | |
278 | ||
279 | /* Group relocations to create high bits of a 16, 32, 48 or 64 | |
280 | bit signed data or abs address inline. Will change | |
281 | instruction to MOVN or MOVZ depending on sign of calculated | |
282 | value. */ | |
283 | ||
caed7120 YZ |
284 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
285 | case BFD_RELOC_AARCH64_MOVW_G1_S: | |
286 | case BFD_RELOC_AARCH64_MOVW_G2_S: | |
ce336788 JW |
287 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: |
288 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
289 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
caed7120 YZ |
290 | /* NOTE: We can only come here with movz or movn. */ |
291 | if (addend < 0) | |
292 | { | |
293 | /* Force use of MOVN. */ | |
294 | addend = ~addend; | |
295 | contents = reencode_movzn_to_movn (contents); | |
296 | } | |
297 | else | |
298 | { | |
299 | /* Force use of MOVZ. */ | |
300 | contents = reencode_movzn_to_movz (contents); | |
301 | } | |
302 | /* fall through */ | |
303 | ||
304 | /* Group relocations to create a 16, 32, 48 or 64 bit unsigned | |
305 | data or abs address inline. */ | |
306 | ||
307 | case BFD_RELOC_AARCH64_MOVW_G0: | |
308 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
309 | case BFD_RELOC_AARCH64_MOVW_G1: | |
310 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
311 | case BFD_RELOC_AARCH64_MOVW_G2: | |
312 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
313 | case BFD_RELOC_AARCH64_MOVW_G3: | |
ce336788 JW |
314 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: |
315 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
caed7120 YZ |
316 | contents = reencode_movw_imm (contents, addend); |
317 | break; | |
318 | ||
319 | default: | |
320 | /* Repack simple data */ | |
321 | if (howto->dst_mask & (howto->dst_mask + 1)) | |
322 | return bfd_reloc_notsupported; | |
323 | ||
324 | contents = ((contents & ~howto->dst_mask) | (addend & howto->dst_mask)); | |
325 | break; | |
326 | } | |
327 | ||
328 | switch (size) | |
329 | { | |
330 | case 2: | |
331 | bfd_put_16 (abfd, contents, address); | |
332 | break; | |
333 | case 4: | |
334 | if (howto->dst_mask != 0xffffffff) | |
335 | /* must be 32-bit instruction, always little-endian */ | |
336 | bfd_putl32 (contents, address); | |
337 | else | |
338 | /* must be 32-bit data (endianness dependent) */ | |
339 | bfd_put_32 (abfd, contents, address); | |
340 | break; | |
341 | case 8: | |
342 | bfd_put_64 (abfd, contents, address); | |
343 | break; | |
344 | default: | |
345 | abort (); | |
346 | } | |
347 | ||
348 | return status; | |
349 | } | |
350 | ||
351 | bfd_vma | |
352 | _bfd_aarch64_elf_resolve_relocation (bfd_reloc_code_real_type r_type, | |
353 | bfd_vma place, bfd_vma value, | |
354 | bfd_vma addend, bfd_boolean weak_undef_p) | |
355 | { | |
356 | switch (r_type) | |
357 | { | |
caed7120 | 358 | case BFD_RELOC_AARCH64_NONE: |
ce336788 | 359 | case BFD_RELOC_AARCH64_TLSDESC_CALL: |
caed7120 YZ |
360 | break; |
361 | ||
ce336788 JW |
362 | case BFD_RELOC_AARCH64_16_PCREL: |
363 | case BFD_RELOC_AARCH64_32_PCREL: | |
364 | case BFD_RELOC_AARCH64_64_PCREL: | |
365 | case BFD_RELOC_AARCH64_ADR_LO21_PCREL: | |
366 | case BFD_RELOC_AARCH64_BRANCH19: | |
367 | case BFD_RELOC_AARCH64_LD_LO19_PCREL: | |
389b8029 | 368 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21: |
1ada945d | 369 | case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19: |
3c12b054 | 370 | case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21: |
043bf05a | 371 | case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19: |
caed7120 YZ |
372 | case BFD_RELOC_AARCH64_TSTBR14: |
373 | if (weak_undef_p) | |
374 | value = place; | |
375 | value = value + addend - place; | |
376 | break; | |
377 | ||
378 | case BFD_RELOC_AARCH64_CALL26: | |
379 | case BFD_RELOC_AARCH64_JUMP26: | |
380 | value = value + addend - place; | |
381 | break; | |
382 | ||
383 | case BFD_RELOC_AARCH64_16: | |
384 | case BFD_RELOC_AARCH64_32: | |
caed7120 YZ |
385 | case BFD_RELOC_AARCH64_MOVW_G0: |
386 | case BFD_RELOC_AARCH64_MOVW_G0_NC: | |
ce336788 | 387 | case BFD_RELOC_AARCH64_MOVW_G0_S: |
caed7120 YZ |
388 | case BFD_RELOC_AARCH64_MOVW_G1: |
389 | case BFD_RELOC_AARCH64_MOVW_G1_NC: | |
ce336788 | 390 | case BFD_RELOC_AARCH64_MOVW_G1_S: |
caed7120 YZ |
391 | case BFD_RELOC_AARCH64_MOVW_G2: |
392 | case BFD_RELOC_AARCH64_MOVW_G2_NC: | |
ce336788 | 393 | case BFD_RELOC_AARCH64_MOVW_G2_S: |
caed7120 YZ |
394 | case BFD_RELOC_AARCH64_MOVW_G3: |
395 | value = value + addend; | |
396 | break; | |
397 | ||
caed7120 | 398 | case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL: |
ce336788 | 399 | case BFD_RELOC_AARCH64_ADR_HI21_PCREL: |
caed7120 YZ |
400 | if (weak_undef_p) |
401 | value = PG (place); | |
402 | value = PG (value + addend) - PG (place); | |
403 | break; | |
404 | ||
405 | case BFD_RELOC_AARCH64_GOT_LD_PREL19: | |
406 | value = value + addend - place; | |
407 | break; | |
408 | ||
409 | case BFD_RELOC_AARCH64_ADR_GOT_PAGE: | |
410 | case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21: | |
411 | case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21: | |
412 | case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21: | |
413 | value = PG (value + addend) - PG (place); | |
414 | break; | |
415 | ||
416 | case BFD_RELOC_AARCH64_ADD_LO12: | |
caed7120 | 417 | case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC: |
ce336788 JW |
418 | case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC: |
419 | case BFD_RELOC_AARCH64_LDST128_LO12: | |
caed7120 YZ |
420 | case BFD_RELOC_AARCH64_LDST16_LO12: |
421 | case BFD_RELOC_AARCH64_LDST32_LO12: | |
422 | case BFD_RELOC_AARCH64_LDST64_LO12: | |
ce336788 | 423 | case BFD_RELOC_AARCH64_LDST8_LO12: |
caed7120 | 424 | case BFD_RELOC_AARCH64_TLSDESC_ADD: |
ce336788 | 425 | case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: |
caed7120 | 426 | case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC: |
ce336788 | 427 | case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC: |
caed7120 YZ |
428 | case BFD_RELOC_AARCH64_TLSDESC_LDR: |
429 | case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC: | |
caed7120 | 430 | case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC: |
ce336788 | 431 | case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC: |
caed7120 YZ |
432 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12: |
433 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC: | |
434 | value = PG_OFFSET (value + addend); | |
435 | break; | |
436 | ||
437 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1: | |
438 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC: | |
439 | value = (value + addend) & (bfd_vma) 0xffff0000; | |
440 | break; | |
441 | case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12: | |
bab91cce JW |
442 | /* Mask off low 12bits, keep all other high bits, so that the later |
443 | generic code could check whehter there is overflow. */ | |
444 | value = (value + addend) & ~(bfd_vma) 0xfff; | |
caed7120 YZ |
445 | break; |
446 | ||
447 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0: | |
448 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC: | |
449 | value = (value + addend) & (bfd_vma) 0xffff; | |
450 | break; | |
451 | ||
452 | case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2: | |
453 | value = (value + addend) & ~(bfd_vma) 0xffffffff; | |
454 | value -= place & ~(bfd_vma) 0xffffffff; | |
455 | break; | |
456 | ||
457 | default: | |
458 | break; | |
459 | } | |
460 | ||
461 | return value; | |
462 | } | |
463 | ||
464 | /* Hook called by the linker routine which adds symbols from an object | |
465 | file. */ | |
466 | ||
467 | bfd_boolean | |
468 | _bfd_aarch64_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info, | |
469 | Elf_Internal_Sym *sym, | |
470 | const char **namep ATTRIBUTE_UNUSED, | |
471 | flagword *flagsp ATTRIBUTE_UNUSED, | |
472 | asection **secp ATTRIBUTE_UNUSED, | |
473 | bfd_vma *valp ATTRIBUTE_UNUSED) | |
474 | { | |
f1885d1e AM |
475 | if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC |
476 | || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE) | |
477 | && (abfd->flags & DYNAMIC) == 0 | |
478 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
caed7120 YZ |
479 | elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE; |
480 | ||
481 | return TRUE; | |
482 | } | |
483 | ||
484 | /* Support for core dump NOTE sections. */ | |
485 | ||
486 | bfd_boolean | |
487 | _bfd_aarch64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
488 | { | |
489 | int offset; | |
490 | size_t size; | |
491 | ||
492 | switch (note->descsz) | |
493 | { | |
494 | default: | |
495 | return FALSE; | |
496 | ||
3b570dee | 497 | case 392: /* sizeof(struct elf_prstatus) on Linux/arm64. */ |
caed7120 YZ |
498 | /* pr_cursig */ |
499 | elf_tdata (abfd)->core->signal | |
500 | = bfd_get_16 (abfd, note->descdata + 12); | |
501 | ||
502 | /* pr_pid */ | |
503 | elf_tdata (abfd)->core->lwpid | |
504 | = bfd_get_32 (abfd, note->descdata + 32); | |
505 | ||
506 | /* pr_reg */ | |
507 | offset = 112; | |
508 | size = 272; | |
509 | ||
510 | break; | |
511 | } | |
512 | ||
513 | /* Make a ".reg/999" section. */ | |
514 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
515 | size, note->descpos + offset); | |
516 | } | |
d0ae9fbd OJ |
517 | |
518 | bfd_boolean | |
519 | _bfd_aarch64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
520 | { | |
521 | switch (note->descsz) | |
522 | { | |
523 | default: | |
524 | return FALSE; | |
525 | ||
526 | case 136: /* This is sizeof(struct elf_prpsinfo) on Linux/aarch64. */ | |
527 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); | |
528 | elf_tdata (abfd)->core->program | |
529 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
530 | elf_tdata (abfd)->core->command | |
531 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
532 | } | |
533 | ||
534 | /* Note that for some reason, a spurious space is tacked | |
535 | onto the end of the args in some (at least one anyway) | |
536 | implementations, so strip it off if it exists. */ | |
537 | ||
538 | { | |
539 | char *command = elf_tdata (abfd)->core->command; | |
540 | int n = strlen (command); | |
541 | ||
542 | if (0 < n && command[n - 1] == ' ') | |
543 | command[n - 1] = '\0'; | |
544 | } | |
545 | ||
546 | return TRUE; | |
547 | } | |
548 | ||
549 | char * | |
550 | _bfd_aarch64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
551 | ...) | |
552 | { | |
553 | switch (note_type) | |
554 | { | |
555 | default: | |
556 | return NULL; | |
557 | ||
558 | case NT_PRPSINFO: | |
559 | { | |
560 | char data[136]; | |
561 | va_list ap; | |
562 | ||
563 | va_start (ap, note_type); | |
564 | memset (data, 0, sizeof (data)); | |
565 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
566 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
567 | va_end (ap); | |
568 | ||
569 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", | |
570 | note_type, data, sizeof (data)); | |
571 | } | |
572 | ||
573 | case NT_PRSTATUS: | |
574 | { | |
575 | char data[392]; | |
576 | va_list ap; | |
577 | long pid; | |
578 | int cursig; | |
579 | const void *greg; | |
580 | ||
581 | va_start (ap, note_type); | |
582 | memset (data, 0, sizeof (data)); | |
583 | pid = va_arg (ap, long); | |
584 | bfd_put_32 (abfd, pid, data + 32); | |
585 | cursig = va_arg (ap, int); | |
586 | bfd_put_16 (abfd, cursig, data + 12); | |
587 | greg = va_arg (ap, const void *); | |
588 | memcpy (data + 112, greg, 272); | |
589 | va_end (ap); | |
590 | ||
591 | return elfcore_write_note (abfd, buf, bufsiz, "CORE", | |
592 | note_type, data, sizeof (data)); | |
593 | } | |
594 | } | |
595 | } |