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e23eba97 | 1 | /* RISC-V-specific support for ELF. |
219d1afa | 2 | Copyright (C) 2011-2018 Free Software Foundation, Inc. |
e23eba97 NC |
3 | |
4 | Contributed by Andrew Waterman (andrew@sifive.com). | |
5 | Based on TILE-Gx and MIPS targets. | |
6 | ||
7 | This file is part of BFD, the Binary File Descriptor library. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; see the file COPYING3. If not, | |
21 | see <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | #include "sysdep.h" | |
24 | #include "bfd.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/riscv.h" | |
28 | #include "opcode/riscv.h" | |
29 | #include "libiberty.h" | |
30 | #include "elfxx-riscv.h" | |
1080bf78 | 31 | #include "safe-ctype.h" |
e23eba97 NC |
32 | #include <stdint.h> |
33 | ||
34 | #define MINUS_ONE ((bfd_vma)0 - 1) | |
35 | ||
57593436 KLC |
36 | /* Special handler for ADD/SUB relocations that allows them to be filled out |
37 | both in the pre-linked and post-linked file. This is necessary to make | |
38 | pre-linked debug info work, as due to linker relaxations we need to emit | |
39 | relocations for the debug info. */ | |
40 | static bfd_reloc_status_type riscv_elf_add_sub_reloc | |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
42 | ||
e23eba97 NC |
43 | /* The relocation table used for SHT_RELA sections. */ |
44 | ||
45 | static reloc_howto_type howto_table[] = | |
46 | { | |
47 | /* No relocation. */ | |
48 | HOWTO (R_RISCV_NONE, /* type */ | |
49 | 0, /* rightshift */ | |
50 | 3, /* size */ | |
51 | 0, /* bitsize */ | |
52 | FALSE, /* pc_relative */ | |
53 | 0, /* bitpos */ | |
54 | complain_overflow_dont, /* complain_on_overflow */ | |
55 | bfd_elf_generic_reloc, /* special_function */ | |
56 | "R_RISCV_NONE", /* name */ | |
57 | FALSE, /* partial_inplace */ | |
58 | 0, /* src_mask */ | |
59 | 0, /* dst_mask */ | |
60 | FALSE), /* pcrel_offset */ | |
61 | ||
62 | /* 32 bit relocation. */ | |
63 | HOWTO (R_RISCV_32, /* type */ | |
64 | 0, /* rightshift */ | |
65 | 2, /* size */ | |
66 | 32, /* bitsize */ | |
67 | FALSE, /* pc_relative */ | |
68 | 0, /* bitpos */ | |
69 | complain_overflow_dont, /* complain_on_overflow */ | |
70 | bfd_elf_generic_reloc, /* special_function */ | |
71 | "R_RISCV_32", /* name */ | |
72 | FALSE, /* partial_inplace */ | |
73 | 0, /* src_mask */ | |
1d65abb5 | 74 | MINUS_ONE, /* dst_mask */ |
e23eba97 NC |
75 | FALSE), /* pcrel_offset */ |
76 | ||
77 | /* 64 bit relocation. */ | |
78 | HOWTO (R_RISCV_64, /* type */ | |
79 | 0, /* rightshift */ | |
80 | 4, /* size */ | |
81 | 64, /* bitsize */ | |
82 | FALSE, /* pc_relative */ | |
83 | 0, /* bitpos */ | |
84 | complain_overflow_dont, /* complain_on_overflow */ | |
85 | bfd_elf_generic_reloc, /* special_function */ | |
86 | "R_RISCV_64", /* name */ | |
87 | FALSE, /* partial_inplace */ | |
88 | 0, /* src_mask */ | |
89 | MINUS_ONE, /* dst_mask */ | |
90 | FALSE), /* pcrel_offset */ | |
91 | ||
92 | /* Relocation against a local symbol in a shared object. */ | |
93 | HOWTO (R_RISCV_RELATIVE, /* type */ | |
94 | 0, /* rightshift */ | |
95 | 2, /* size */ | |
96 | 32, /* bitsize */ | |
97 | FALSE, /* pc_relative */ | |
98 | 0, /* bitpos */ | |
99 | complain_overflow_dont, /* complain_on_overflow */ | |
100 | bfd_elf_generic_reloc, /* special_function */ | |
101 | "R_RISCV_RELATIVE", /* name */ | |
102 | FALSE, /* partial_inplace */ | |
103 | 0, /* src_mask */ | |
1d65abb5 | 104 | MINUS_ONE, /* dst_mask */ |
e23eba97 NC |
105 | FALSE), /* pcrel_offset */ |
106 | ||
107 | HOWTO (R_RISCV_COPY, /* type */ | |
108 | 0, /* rightshift */ | |
109 | 0, /* this one is variable size */ | |
110 | 0, /* bitsize */ | |
111 | FALSE, /* pc_relative */ | |
112 | 0, /* bitpos */ | |
113 | complain_overflow_bitfield, /* complain_on_overflow */ | |
114 | bfd_elf_generic_reloc, /* special_function */ | |
115 | "R_RISCV_COPY", /* name */ | |
116 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
117 | 0, /* src_mask */ |
118 | 0, /* dst_mask */ | |
e23eba97 NC |
119 | FALSE), /* pcrel_offset */ |
120 | ||
121 | HOWTO (R_RISCV_JUMP_SLOT, /* type */ | |
122 | 0, /* rightshift */ | |
123 | 4, /* size */ | |
124 | 64, /* bitsize */ | |
125 | FALSE, /* pc_relative */ | |
126 | 0, /* bitpos */ | |
127 | complain_overflow_bitfield, /* complain_on_overflow */ | |
128 | bfd_elf_generic_reloc, /* special_function */ | |
129 | "R_RISCV_JUMP_SLOT", /* name */ | |
130 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
131 | 0, /* src_mask */ |
132 | 0, /* dst_mask */ | |
e23eba97 NC |
133 | FALSE), /* pcrel_offset */ |
134 | ||
135 | /* Dynamic TLS relocations. */ | |
136 | HOWTO (R_RISCV_TLS_DTPMOD32, /* type */ | |
137 | 0, /* rightshift */ | |
138 | 4, /* size */ | |
139 | 32, /* bitsize */ | |
140 | FALSE, /* pc_relative */ | |
141 | 0, /* bitpos */ | |
142 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 143 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
144 | "R_RISCV_TLS_DTPMOD32", /* name */ |
145 | FALSE, /* partial_inplace */ | |
1d65abb5 | 146 | 0, /* src_mask */ |
e23eba97 NC |
147 | MINUS_ONE, /* dst_mask */ |
148 | FALSE), /* pcrel_offset */ | |
149 | ||
150 | HOWTO (R_RISCV_TLS_DTPMOD64, /* type */ | |
151 | 0, /* rightshift */ | |
152 | 4, /* size */ | |
153 | 64, /* bitsize */ | |
154 | FALSE, /* pc_relative */ | |
155 | 0, /* bitpos */ | |
156 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 157 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
158 | "R_RISCV_TLS_DTPMOD64", /* name */ |
159 | FALSE, /* partial_inplace */ | |
1d65abb5 | 160 | 0, /* src_mask */ |
e23eba97 NC |
161 | MINUS_ONE, /* dst_mask */ |
162 | FALSE), /* pcrel_offset */ | |
163 | ||
164 | HOWTO (R_RISCV_TLS_DTPREL32, /* type */ | |
165 | 0, /* rightshift */ | |
166 | 4, /* size */ | |
167 | 32, /* bitsize */ | |
168 | FALSE, /* pc_relative */ | |
169 | 0, /* bitpos */ | |
170 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 171 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
172 | "R_RISCV_TLS_DTPREL32", /* name */ |
173 | TRUE, /* partial_inplace */ | |
1d65abb5 | 174 | 0, /* src_mask */ |
e23eba97 NC |
175 | MINUS_ONE, /* dst_mask */ |
176 | FALSE), /* pcrel_offset */ | |
177 | ||
178 | HOWTO (R_RISCV_TLS_DTPREL64, /* type */ | |
179 | 0, /* rightshift */ | |
180 | 4, /* size */ | |
181 | 64, /* bitsize */ | |
182 | FALSE, /* pc_relative */ | |
183 | 0, /* bitpos */ | |
184 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 185 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
186 | "R_RISCV_TLS_DTPREL64", /* name */ |
187 | TRUE, /* partial_inplace */ | |
1d65abb5 | 188 | 0, /* src_mask */ |
e23eba97 NC |
189 | MINUS_ONE, /* dst_mask */ |
190 | FALSE), /* pcrel_offset */ | |
191 | ||
192 | HOWTO (R_RISCV_TLS_TPREL32, /* type */ | |
193 | 0, /* rightshift */ | |
194 | 2, /* size */ | |
195 | 32, /* bitsize */ | |
196 | FALSE, /* pc_relative */ | |
197 | 0, /* bitpos */ | |
198 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 199 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
200 | "R_RISCV_TLS_TPREL32", /* name */ |
201 | FALSE, /* partial_inplace */ | |
1d65abb5 | 202 | 0, /* src_mask */ |
e23eba97 NC |
203 | MINUS_ONE, /* dst_mask */ |
204 | FALSE), /* pcrel_offset */ | |
205 | ||
206 | HOWTO (R_RISCV_TLS_TPREL64, /* type */ | |
207 | 0, /* rightshift */ | |
208 | 4, /* size */ | |
209 | 64, /* bitsize */ | |
210 | FALSE, /* pc_relative */ | |
211 | 0, /* bitpos */ | |
212 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 213 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
214 | "R_RISCV_TLS_TPREL64", /* name */ |
215 | FALSE, /* partial_inplace */ | |
1d65abb5 | 216 | 0, /* src_mask */ |
e23eba97 NC |
217 | MINUS_ONE, /* dst_mask */ |
218 | FALSE), /* pcrel_offset */ | |
219 | ||
220 | /* Reserved for future relocs that the dynamic linker must understand. */ | |
221 | EMPTY_HOWTO (12), | |
222 | EMPTY_HOWTO (13), | |
223 | EMPTY_HOWTO (14), | |
224 | EMPTY_HOWTO (15), | |
225 | ||
226 | /* 12-bit PC-relative branch offset. */ | |
227 | HOWTO (R_RISCV_BRANCH, /* type */ | |
228 | 0, /* rightshift */ | |
229 | 2, /* size */ | |
230 | 32, /* bitsize */ | |
231 | TRUE, /* pc_relative */ | |
232 | 0, /* bitpos */ | |
233 | complain_overflow_signed, /* complain_on_overflow */ | |
234 | bfd_elf_generic_reloc, /* special_function */ | |
235 | "R_RISCV_BRANCH", /* name */ | |
236 | FALSE, /* partial_inplace */ | |
237 | 0, /* src_mask */ | |
238 | ENCODE_SBTYPE_IMM (-1U), /* dst_mask */ | |
239 | TRUE), /* pcrel_offset */ | |
240 | ||
241 | /* 20-bit PC-relative jump offset. */ | |
242 | HOWTO (R_RISCV_JAL, /* type */ | |
243 | 0, /* rightshift */ | |
244 | 2, /* size */ | |
245 | 32, /* bitsize */ | |
246 | TRUE, /* pc_relative */ | |
247 | 0, /* bitpos */ | |
248 | complain_overflow_dont, /* complain_on_overflow */ | |
e23eba97 NC |
249 | bfd_elf_generic_reloc, /* special_function */ |
250 | "R_RISCV_JAL", /* name */ | |
251 | FALSE, /* partial_inplace */ | |
252 | 0, /* src_mask */ | |
253 | ENCODE_UJTYPE_IMM (-1U), /* dst_mask */ | |
254 | TRUE), /* pcrel_offset */ | |
255 | ||
256 | /* 32-bit PC-relative function call (AUIPC/JALR). */ | |
257 | HOWTO (R_RISCV_CALL, /* type */ | |
258 | 0, /* rightshift */ | |
259 | 2, /* size */ | |
260 | 64, /* bitsize */ | |
261 | TRUE, /* pc_relative */ | |
262 | 0, /* bitpos */ | |
263 | complain_overflow_dont, /* complain_on_overflow */ | |
264 | bfd_elf_generic_reloc, /* special_function */ | |
265 | "R_RISCV_CALL", /* name */ | |
266 | FALSE, /* partial_inplace */ | |
267 | 0, /* src_mask */ | |
268 | ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32), | |
269 | /* dst_mask */ | |
270 | TRUE), /* pcrel_offset */ | |
271 | ||
1d65abb5 | 272 | /* Like R_RISCV_CALL, but not locally binding. */ |
e23eba97 NC |
273 | HOWTO (R_RISCV_CALL_PLT, /* type */ |
274 | 0, /* rightshift */ | |
275 | 2, /* size */ | |
276 | 64, /* bitsize */ | |
277 | TRUE, /* pc_relative */ | |
278 | 0, /* bitpos */ | |
279 | complain_overflow_dont, /* complain_on_overflow */ | |
280 | bfd_elf_generic_reloc, /* special_function */ | |
281 | "R_RISCV_CALL_PLT", /* name */ | |
282 | FALSE, /* partial_inplace */ | |
283 | 0, /* src_mask */ | |
284 | ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32), | |
285 | /* dst_mask */ | |
286 | TRUE), /* pcrel_offset */ | |
287 | ||
288 | /* High 20 bits of 32-bit PC-relative GOT access. */ | |
289 | HOWTO (R_RISCV_GOT_HI20, /* type */ | |
290 | 0, /* rightshift */ | |
291 | 2, /* size */ | |
292 | 32, /* bitsize */ | |
293 | TRUE, /* pc_relative */ | |
294 | 0, /* bitpos */ | |
295 | complain_overflow_dont, /* complain_on_overflow */ | |
296 | bfd_elf_generic_reloc, /* special_function */ | |
297 | "R_RISCV_GOT_HI20", /* name */ | |
298 | FALSE, /* partial_inplace */ | |
299 | 0, /* src_mask */ | |
300 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
301 | FALSE), /* pcrel_offset */ | |
302 | ||
303 | /* High 20 bits of 32-bit PC-relative TLS IE GOT access. */ | |
304 | HOWTO (R_RISCV_TLS_GOT_HI20, /* type */ | |
305 | 0, /* rightshift */ | |
306 | 2, /* size */ | |
307 | 32, /* bitsize */ | |
308 | TRUE, /* pc_relative */ | |
309 | 0, /* bitpos */ | |
310 | complain_overflow_dont, /* complain_on_overflow */ | |
311 | bfd_elf_generic_reloc, /* special_function */ | |
312 | "R_RISCV_TLS_GOT_HI20", /* name */ | |
313 | FALSE, /* partial_inplace */ | |
314 | 0, /* src_mask */ | |
315 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
316 | FALSE), /* pcrel_offset */ | |
317 | ||
318 | /* High 20 bits of 32-bit PC-relative TLS GD GOT reference. */ | |
319 | HOWTO (R_RISCV_TLS_GD_HI20, /* type */ | |
320 | 0, /* rightshift */ | |
321 | 2, /* size */ | |
322 | 32, /* bitsize */ | |
323 | TRUE, /* pc_relative */ | |
324 | 0, /* bitpos */ | |
325 | complain_overflow_dont, /* complain_on_overflow */ | |
326 | bfd_elf_generic_reloc, /* special_function */ | |
327 | "R_RISCV_TLS_GD_HI20", /* name */ | |
328 | FALSE, /* partial_inplace */ | |
329 | 0, /* src_mask */ | |
330 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
331 | FALSE), /* pcrel_offset */ | |
332 | ||
333 | /* High 20 bits of 32-bit PC-relative reference. */ | |
334 | HOWTO (R_RISCV_PCREL_HI20, /* type */ | |
335 | 0, /* rightshift */ | |
336 | 2, /* size */ | |
337 | 32, /* bitsize */ | |
338 | TRUE, /* pc_relative */ | |
339 | 0, /* bitpos */ | |
340 | complain_overflow_dont, /* complain_on_overflow */ | |
341 | bfd_elf_generic_reloc, /* special_function */ | |
342 | "R_RISCV_PCREL_HI20", /* name */ | |
343 | FALSE, /* partial_inplace */ | |
344 | 0, /* src_mask */ | |
345 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
346 | TRUE), /* pcrel_offset */ | |
347 | ||
348 | /* Low 12 bits of a 32-bit PC-relative load or add. */ | |
349 | HOWTO (R_RISCV_PCREL_LO12_I, /* type */ | |
350 | 0, /* rightshift */ | |
351 | 2, /* size */ | |
352 | 32, /* bitsize */ | |
353 | FALSE, /* pc_relative */ | |
354 | 0, /* bitpos */ | |
355 | complain_overflow_dont, /* complain_on_overflow */ | |
356 | bfd_elf_generic_reloc, /* special_function */ | |
357 | "R_RISCV_PCREL_LO12_I", /* name */ | |
358 | FALSE, /* partial_inplace */ | |
359 | 0, /* src_mask */ | |
360 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
361 | FALSE), /* pcrel_offset */ | |
362 | ||
363 | /* Low 12 bits of a 32-bit PC-relative store. */ | |
364 | HOWTO (R_RISCV_PCREL_LO12_S, /* type */ | |
365 | 0, /* rightshift */ | |
366 | 2, /* size */ | |
367 | 32, /* bitsize */ | |
368 | FALSE, /* pc_relative */ | |
369 | 0, /* bitpos */ | |
370 | complain_overflow_dont, /* complain_on_overflow */ | |
371 | bfd_elf_generic_reloc, /* special_function */ | |
372 | "R_RISCV_PCREL_LO12_S", /* name */ | |
373 | FALSE, /* partial_inplace */ | |
374 | 0, /* src_mask */ | |
375 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
376 | FALSE), /* pcrel_offset */ | |
377 | ||
378 | /* High 20 bits of 32-bit absolute address. */ | |
379 | HOWTO (R_RISCV_HI20, /* type */ | |
380 | 0, /* rightshift */ | |
381 | 2, /* size */ | |
382 | 32, /* bitsize */ | |
383 | FALSE, /* pc_relative */ | |
384 | 0, /* bitpos */ | |
385 | complain_overflow_dont, /* complain_on_overflow */ | |
386 | bfd_elf_generic_reloc, /* special_function */ | |
387 | "R_RISCV_HI20", /* name */ | |
388 | FALSE, /* partial_inplace */ | |
389 | 0, /* src_mask */ | |
390 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
391 | FALSE), /* pcrel_offset */ | |
392 | ||
393 | /* High 12 bits of 32-bit load or add. */ | |
394 | HOWTO (R_RISCV_LO12_I, /* type */ | |
395 | 0, /* rightshift */ | |
396 | 2, /* size */ | |
397 | 32, /* bitsize */ | |
398 | FALSE, /* pc_relative */ | |
399 | 0, /* bitpos */ | |
400 | complain_overflow_dont, /* complain_on_overflow */ | |
401 | bfd_elf_generic_reloc, /* special_function */ | |
402 | "R_RISCV_LO12_I", /* name */ | |
403 | FALSE, /* partial_inplace */ | |
404 | 0, /* src_mask */ | |
405 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
406 | FALSE), /* pcrel_offset */ | |
407 | ||
408 | /* High 12 bits of 32-bit store. */ | |
409 | HOWTO (R_RISCV_LO12_S, /* type */ | |
410 | 0, /* rightshift */ | |
411 | 2, /* size */ | |
412 | 32, /* bitsize */ | |
413 | FALSE, /* pc_relative */ | |
414 | 0, /* bitpos */ | |
415 | complain_overflow_dont, /* complain_on_overflow */ | |
416 | bfd_elf_generic_reloc, /* special_function */ | |
417 | "R_RISCV_LO12_S", /* name */ | |
418 | FALSE, /* partial_inplace */ | |
419 | 0, /* src_mask */ | |
420 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
421 | FALSE), /* pcrel_offset */ | |
422 | ||
423 | /* High 20 bits of TLS LE thread pointer offset. */ | |
424 | HOWTO (R_RISCV_TPREL_HI20, /* type */ | |
425 | 0, /* rightshift */ | |
426 | 2, /* size */ | |
427 | 32, /* bitsize */ | |
428 | FALSE, /* pc_relative */ | |
429 | 0, /* bitpos */ | |
430 | complain_overflow_signed, /* complain_on_overflow */ | |
431 | bfd_elf_generic_reloc, /* special_function */ | |
432 | "R_RISCV_TPREL_HI20", /* name */ | |
433 | TRUE, /* partial_inplace */ | |
434 | 0, /* src_mask */ | |
435 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
436 | FALSE), /* pcrel_offset */ | |
437 | ||
438 | /* Low 12 bits of TLS LE thread pointer offset for loads and adds. */ | |
439 | HOWTO (R_RISCV_TPREL_LO12_I, /* type */ | |
440 | 0, /* rightshift */ | |
441 | 2, /* size */ | |
442 | 32, /* bitsize */ | |
443 | FALSE, /* pc_relative */ | |
444 | 0, /* bitpos */ | |
445 | complain_overflow_signed, /* complain_on_overflow */ | |
446 | bfd_elf_generic_reloc, /* special_function */ | |
447 | "R_RISCV_TPREL_LO12_I", /* name */ | |
448 | FALSE, /* partial_inplace */ | |
449 | 0, /* src_mask */ | |
450 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
451 | FALSE), /* pcrel_offset */ | |
452 | ||
453 | /* Low 12 bits of TLS LE thread pointer offset for stores. */ | |
454 | HOWTO (R_RISCV_TPREL_LO12_S, /* type */ | |
455 | 0, /* rightshift */ | |
456 | 2, /* size */ | |
457 | 32, /* bitsize */ | |
458 | FALSE, /* pc_relative */ | |
459 | 0, /* bitpos */ | |
460 | complain_overflow_signed, /* complain_on_overflow */ | |
461 | bfd_elf_generic_reloc, /* special_function */ | |
462 | "R_RISCV_TPREL_LO12_S", /* name */ | |
463 | FALSE, /* partial_inplace */ | |
464 | 0, /* src_mask */ | |
465 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
466 | FALSE), /* pcrel_offset */ | |
467 | ||
1d65abb5 | 468 | /* TLS LE thread pointer usage. May be relaxed. */ |
e23eba97 NC |
469 | HOWTO (R_RISCV_TPREL_ADD, /* type */ |
470 | 0, /* rightshift */ | |
471 | 2, /* size */ | |
472 | 32, /* bitsize */ | |
473 | FALSE, /* pc_relative */ | |
474 | 0, /* bitpos */ | |
475 | complain_overflow_dont, /* complain_on_overflow */ | |
476 | bfd_elf_generic_reloc, /* special_function */ | |
477 | "R_RISCV_TPREL_ADD", /* name */ | |
478 | TRUE, /* partial_inplace */ | |
479 | 0, /* src_mask */ | |
480 | 0, /* dst_mask */ | |
481 | FALSE), /* pcrel_offset */ | |
482 | ||
483 | /* 8-bit in-place addition, for local label subtraction. */ | |
484 | HOWTO (R_RISCV_ADD8, /* type */ | |
485 | 0, /* rightshift */ | |
486 | 0, /* size */ | |
0b14696a | 487 | 8, /* bitsize */ |
e23eba97 NC |
488 | FALSE, /* pc_relative */ |
489 | 0, /* bitpos */ | |
490 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 491 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
492 | "R_RISCV_ADD8", /* name */ |
493 | FALSE, /* partial_inplace */ | |
494 | 0, /* src_mask */ | |
495 | MINUS_ONE, /* dst_mask */ | |
496 | FALSE), /* pcrel_offset */ | |
497 | ||
498 | /* 16-bit in-place addition, for local label subtraction. */ | |
499 | HOWTO (R_RISCV_ADD16, /* type */ | |
500 | 0, /* rightshift */ | |
501 | 1, /* size */ | |
502 | 16, /* bitsize */ | |
503 | FALSE, /* pc_relative */ | |
504 | 0, /* bitpos */ | |
505 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 506 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
507 | "R_RISCV_ADD16", /* name */ |
508 | FALSE, /* partial_inplace */ | |
509 | 0, /* src_mask */ | |
510 | MINUS_ONE, /* dst_mask */ | |
511 | FALSE), /* pcrel_offset */ | |
512 | ||
513 | /* 32-bit in-place addition, for local label subtraction. */ | |
514 | HOWTO (R_RISCV_ADD32, /* type */ | |
515 | 0, /* rightshift */ | |
516 | 2, /* size */ | |
517 | 32, /* bitsize */ | |
518 | FALSE, /* pc_relative */ | |
519 | 0, /* bitpos */ | |
520 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 521 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
522 | "R_RISCV_ADD32", /* name */ |
523 | FALSE, /* partial_inplace */ | |
524 | 0, /* src_mask */ | |
525 | MINUS_ONE, /* dst_mask */ | |
526 | FALSE), /* pcrel_offset */ | |
527 | ||
528 | /* 64-bit in-place addition, for local label subtraction. */ | |
529 | HOWTO (R_RISCV_ADD64, /* type */ | |
530 | 0, /* rightshift */ | |
531 | 4, /* size */ | |
532 | 64, /* bitsize */ | |
533 | FALSE, /* pc_relative */ | |
534 | 0, /* bitpos */ | |
535 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 536 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
537 | "R_RISCV_ADD64", /* name */ |
538 | FALSE, /* partial_inplace */ | |
539 | 0, /* src_mask */ | |
540 | MINUS_ONE, /* dst_mask */ | |
541 | FALSE), /* pcrel_offset */ | |
542 | ||
543 | /* 8-bit in-place addition, for local label subtraction. */ | |
544 | HOWTO (R_RISCV_SUB8, /* type */ | |
545 | 0, /* rightshift */ | |
546 | 0, /* size */ | |
547 | 8, /* bitsize */ | |
548 | FALSE, /* pc_relative */ | |
549 | 0, /* bitpos */ | |
550 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 551 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
552 | "R_RISCV_SUB8", /* name */ |
553 | FALSE, /* partial_inplace */ | |
554 | 0, /* src_mask */ | |
555 | MINUS_ONE, /* dst_mask */ | |
556 | FALSE), /* pcrel_offset */ | |
557 | ||
558 | /* 16-bit in-place addition, for local label subtraction. */ | |
559 | HOWTO (R_RISCV_SUB16, /* type */ | |
560 | 0, /* rightshift */ | |
561 | 1, /* size */ | |
562 | 16, /* bitsize */ | |
563 | FALSE, /* pc_relative */ | |
564 | 0, /* bitpos */ | |
565 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 566 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
567 | "R_RISCV_SUB16", /* name */ |
568 | FALSE, /* partial_inplace */ | |
569 | 0, /* src_mask */ | |
570 | MINUS_ONE, /* dst_mask */ | |
571 | FALSE), /* pcrel_offset */ | |
572 | ||
573 | /* 32-bit in-place addition, for local label subtraction. */ | |
574 | HOWTO (R_RISCV_SUB32, /* type */ | |
575 | 0, /* rightshift */ | |
576 | 2, /* size */ | |
577 | 32, /* bitsize */ | |
578 | FALSE, /* pc_relative */ | |
579 | 0, /* bitpos */ | |
580 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 581 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
582 | "R_RISCV_SUB32", /* name */ |
583 | FALSE, /* partial_inplace */ | |
584 | 0, /* src_mask */ | |
585 | MINUS_ONE, /* dst_mask */ | |
586 | FALSE), /* pcrel_offset */ | |
587 | ||
588 | /* 64-bit in-place addition, for local label subtraction. */ | |
589 | HOWTO (R_RISCV_SUB64, /* type */ | |
590 | 0, /* rightshift */ | |
591 | 4, /* size */ | |
592 | 64, /* bitsize */ | |
593 | FALSE, /* pc_relative */ | |
594 | 0, /* bitpos */ | |
595 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 596 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
597 | "R_RISCV_SUB64", /* name */ |
598 | FALSE, /* partial_inplace */ | |
599 | 0, /* src_mask */ | |
600 | MINUS_ONE, /* dst_mask */ | |
601 | FALSE), /* pcrel_offset */ | |
602 | ||
603 | /* GNU extension to record C++ vtable hierarchy */ | |
604 | HOWTO (R_RISCV_GNU_VTINHERIT, /* type */ | |
605 | 0, /* rightshift */ | |
606 | 4, /* size */ | |
607 | 0, /* bitsize */ | |
608 | FALSE, /* pc_relative */ | |
609 | 0, /* bitpos */ | |
610 | complain_overflow_dont, /* complain_on_overflow */ | |
611 | NULL, /* special_function */ | |
612 | "R_RISCV_GNU_VTINHERIT", /* name */ | |
613 | FALSE, /* partial_inplace */ | |
614 | 0, /* src_mask */ | |
615 | 0, /* dst_mask */ | |
616 | FALSE), /* pcrel_offset */ | |
617 | ||
618 | /* GNU extension to record C++ vtable member usage */ | |
619 | HOWTO (R_RISCV_GNU_VTENTRY, /* type */ | |
620 | 0, /* rightshift */ | |
621 | 4, /* size */ | |
622 | 0, /* bitsize */ | |
623 | FALSE, /* pc_relative */ | |
624 | 0, /* bitpos */ | |
625 | complain_overflow_dont, /* complain_on_overflow */ | |
626 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
627 | "R_RISCV_GNU_VTENTRY", /* name */ | |
628 | FALSE, /* partial_inplace */ | |
629 | 0, /* src_mask */ | |
630 | 0, /* dst_mask */ | |
631 | FALSE), /* pcrel_offset */ | |
632 | ||
633 | /* Indicates an alignment statement. The addend field encodes how many | |
634 | bytes of NOPs follow the statement. The desired alignment is the | |
635 | addend rounded up to the next power of two. */ | |
636 | HOWTO (R_RISCV_ALIGN, /* type */ | |
637 | 0, /* rightshift */ | |
638 | 2, /* size */ | |
639 | 0, /* bitsize */ | |
640 | FALSE, /* pc_relative */ | |
641 | 0, /* bitpos */ | |
642 | complain_overflow_dont, /* complain_on_overflow */ | |
643 | bfd_elf_generic_reloc, /* special_function */ | |
644 | "R_RISCV_ALIGN", /* name */ | |
645 | FALSE, /* partial_inplace */ | |
646 | 0, /* src_mask */ | |
647 | 0, /* dst_mask */ | |
648 | TRUE), /* pcrel_offset */ | |
649 | ||
650 | /* 8-bit PC-relative branch offset. */ | |
651 | HOWTO (R_RISCV_RVC_BRANCH, /* type */ | |
652 | 0, /* rightshift */ | |
653 | 2, /* size */ | |
654 | 32, /* bitsize */ | |
655 | TRUE, /* pc_relative */ | |
656 | 0, /* bitpos */ | |
657 | complain_overflow_signed, /* complain_on_overflow */ | |
658 | bfd_elf_generic_reloc, /* special_function */ | |
659 | "R_RISCV_RVC_BRANCH", /* name */ | |
660 | FALSE, /* partial_inplace */ | |
661 | 0, /* src_mask */ | |
662 | ENCODE_RVC_B_IMM (-1U), /* dst_mask */ | |
663 | TRUE), /* pcrel_offset */ | |
664 | ||
665 | /* 11-bit PC-relative jump offset. */ | |
666 | HOWTO (R_RISCV_RVC_JUMP, /* type */ | |
667 | 0, /* rightshift */ | |
668 | 2, /* size */ | |
669 | 32, /* bitsize */ | |
670 | TRUE, /* pc_relative */ | |
671 | 0, /* bitpos */ | |
672 | complain_overflow_dont, /* complain_on_overflow */ | |
e23eba97 NC |
673 | bfd_elf_generic_reloc, /* special_function */ |
674 | "R_RISCV_RVC_JUMP", /* name */ | |
675 | FALSE, /* partial_inplace */ | |
676 | 0, /* src_mask */ | |
677 | ENCODE_RVC_J_IMM (-1U), /* dst_mask */ | |
678 | TRUE), /* pcrel_offset */ | |
679 | ||
680 | /* High 6 bits of 18-bit absolute address. */ | |
681 | HOWTO (R_RISCV_RVC_LUI, /* type */ | |
682 | 0, /* rightshift */ | |
683 | 2, /* size */ | |
684 | 32, /* bitsize */ | |
685 | FALSE, /* pc_relative */ | |
686 | 0, /* bitpos */ | |
687 | complain_overflow_dont, /* complain_on_overflow */ | |
688 | bfd_elf_generic_reloc, /* special_function */ | |
689 | "R_RISCV_RVC_LUI", /* name */ | |
690 | FALSE, /* partial_inplace */ | |
691 | 0, /* src_mask */ | |
692 | ENCODE_RVC_IMM (-1U), /* dst_mask */ | |
693 | FALSE), /* pcrel_offset */ | |
694 | ||
1d65abb5 | 695 | /* GP-relative load. */ |
e23eba97 NC |
696 | HOWTO (R_RISCV_GPREL_I, /* type */ |
697 | 0, /* rightshift */ | |
698 | 2, /* size */ | |
699 | 32, /* bitsize */ | |
700 | FALSE, /* pc_relative */ | |
701 | 0, /* bitpos */ | |
702 | complain_overflow_dont, /* complain_on_overflow */ | |
703 | bfd_elf_generic_reloc, /* special_function */ | |
704 | "R_RISCV_GPREL_I", /* name */ | |
705 | FALSE, /* partial_inplace */ | |
706 | 0, /* src_mask */ | |
707 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
708 | FALSE), /* pcrel_offset */ | |
709 | ||
1d65abb5 | 710 | /* GP-relative store. */ |
e23eba97 NC |
711 | HOWTO (R_RISCV_GPREL_S, /* type */ |
712 | 0, /* rightshift */ | |
713 | 2, /* size */ | |
714 | 32, /* bitsize */ | |
715 | FALSE, /* pc_relative */ | |
716 | 0, /* bitpos */ | |
717 | complain_overflow_dont, /* complain_on_overflow */ | |
718 | bfd_elf_generic_reloc, /* special_function */ | |
719 | "R_RISCV_GPREL_S", /* name */ | |
720 | FALSE, /* partial_inplace */ | |
721 | 0, /* src_mask */ | |
722 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
723 | FALSE), /* pcrel_offset */ | |
45f76423 AW |
724 | |
725 | /* TP-relative TLS LE load. */ | |
726 | HOWTO (R_RISCV_TPREL_I, /* type */ | |
727 | 0, /* rightshift */ | |
728 | 2, /* size */ | |
729 | 32, /* bitsize */ | |
730 | FALSE, /* pc_relative */ | |
731 | 0, /* bitpos */ | |
732 | complain_overflow_signed, /* complain_on_overflow */ | |
733 | bfd_elf_generic_reloc, /* special_function */ | |
734 | "R_RISCV_TPREL_I", /* name */ | |
735 | FALSE, /* partial_inplace */ | |
736 | 0, /* src_mask */ | |
737 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
738 | FALSE), /* pcrel_offset */ | |
739 | ||
740 | /* TP-relative TLS LE store. */ | |
741 | HOWTO (R_RISCV_TPREL_S, /* type */ | |
742 | 0, /* rightshift */ | |
743 | 2, /* size */ | |
744 | 32, /* bitsize */ | |
745 | FALSE, /* pc_relative */ | |
746 | 0, /* bitpos */ | |
747 | complain_overflow_signed, /* complain_on_overflow */ | |
748 | bfd_elf_generic_reloc, /* special_function */ | |
749 | "R_RISCV_TPREL_S", /* name */ | |
750 | FALSE, /* partial_inplace */ | |
751 | 0, /* src_mask */ | |
752 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
753 | FALSE), /* pcrel_offset */ | |
754 | ||
755 | /* The paired relocation may be relaxed. */ | |
756 | HOWTO (R_RISCV_RELAX, /* type */ | |
757 | 0, /* rightshift */ | |
758 | 3, /* size */ | |
759 | 0, /* bitsize */ | |
760 | FALSE, /* pc_relative */ | |
761 | 0, /* bitpos */ | |
762 | complain_overflow_dont, /* complain_on_overflow */ | |
763 | bfd_elf_generic_reloc, /* special_function */ | |
764 | "R_RISCV_RELAX", /* name */ | |
765 | FALSE, /* partial_inplace */ | |
766 | 0, /* src_mask */ | |
767 | 0, /* dst_mask */ | |
768 | FALSE), /* pcrel_offset */ | |
769 | ||
770 | /* 6-bit in-place addition, for local label subtraction. */ | |
771 | HOWTO (R_RISCV_SUB6, /* type */ | |
772 | 0, /* rightshift */ | |
773 | 0, /* size */ | |
774 | 8, /* bitsize */ | |
775 | FALSE, /* pc_relative */ | |
776 | 0, /* bitpos */ | |
777 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 778 | riscv_elf_add_sub_reloc, /* special_function */ |
45f76423 AW |
779 | "R_RISCV_SUB6", /* name */ |
780 | FALSE, /* partial_inplace */ | |
781 | 0, /* src_mask */ | |
782 | 0x3f, /* dst_mask */ | |
783 | FALSE), /* pcrel_offset */ | |
784 | ||
785 | /* 6-bit in-place setting, for local label subtraction. */ | |
786 | HOWTO (R_RISCV_SET6, /* type */ | |
787 | 0, /* rightshift */ | |
788 | 0, /* size */ | |
789 | 8, /* bitsize */ | |
790 | FALSE, /* pc_relative */ | |
791 | 0, /* bitpos */ | |
792 | complain_overflow_dont, /* complain_on_overflow */ | |
793 | bfd_elf_generic_reloc, /* special_function */ | |
794 | "R_RISCV_SET6", /* name */ | |
795 | FALSE, /* partial_inplace */ | |
796 | 0, /* src_mask */ | |
797 | 0x3f, /* dst_mask */ | |
798 | FALSE), /* pcrel_offset */ | |
799 | ||
800 | /* 8-bit in-place setting, for local label subtraction. */ | |
801 | HOWTO (R_RISCV_SET8, /* type */ | |
802 | 0, /* rightshift */ | |
803 | 0, /* size */ | |
804 | 8, /* bitsize */ | |
805 | FALSE, /* pc_relative */ | |
806 | 0, /* bitpos */ | |
807 | complain_overflow_dont, /* complain_on_overflow */ | |
808 | bfd_elf_generic_reloc, /* special_function */ | |
809 | "R_RISCV_SET8", /* name */ | |
810 | FALSE, /* partial_inplace */ | |
811 | 0, /* src_mask */ | |
812 | MINUS_ONE, /* dst_mask */ | |
813 | FALSE), /* pcrel_offset */ | |
814 | ||
815 | /* 16-bit in-place setting, for local label subtraction. */ | |
816 | HOWTO (R_RISCV_SET16, /* type */ | |
817 | 0, /* rightshift */ | |
818 | 1, /* size */ | |
819 | 16, /* bitsize */ | |
820 | FALSE, /* pc_relative */ | |
821 | 0, /* bitpos */ | |
822 | complain_overflow_dont, /* complain_on_overflow */ | |
823 | bfd_elf_generic_reloc, /* special_function */ | |
824 | "R_RISCV_SET16", /* name */ | |
825 | FALSE, /* partial_inplace */ | |
826 | 0, /* src_mask */ | |
827 | MINUS_ONE, /* dst_mask */ | |
828 | FALSE), /* pcrel_offset */ | |
829 | ||
830 | /* 32-bit in-place setting, for local label subtraction. */ | |
831 | HOWTO (R_RISCV_SET32, /* type */ | |
832 | 0, /* rightshift */ | |
833 | 2, /* size */ | |
834 | 32, /* bitsize */ | |
835 | FALSE, /* pc_relative */ | |
836 | 0, /* bitpos */ | |
837 | complain_overflow_dont, /* complain_on_overflow */ | |
838 | bfd_elf_generic_reloc, /* special_function */ | |
839 | "R_RISCV_SET32", /* name */ | |
840 | FALSE, /* partial_inplace */ | |
841 | 0, /* src_mask */ | |
842 | MINUS_ONE, /* dst_mask */ | |
843 | FALSE), /* pcrel_offset */ | |
a6cbf936 KLC |
844 | |
845 | /* 32-bit PC relative. */ | |
846 | HOWTO (R_RISCV_32_PCREL, /* type */ | |
847 | 0, /* rightshift */ | |
848 | 2, /* size */ | |
849 | 32, /* bitsize */ | |
850 | TRUE, /* pc_relative */ | |
851 | 0, /* bitpos */ | |
852 | complain_overflow_dont, /* complain_on_overflow */ | |
853 | bfd_elf_generic_reloc, /* special_function */ | |
854 | "R_RISCV_32_PCREL", /* name */ | |
855 | FALSE, /* partial_inplace */ | |
856 | 0, /* src_mask */ | |
857 | MINUS_ONE, /* dst_mask */ | |
858 | FALSE), /* pcrel_offset */ | |
e23eba97 NC |
859 | }; |
860 | ||
861 | /* A mapping from BFD reloc types to RISC-V ELF reloc types. */ | |
862 | ||
863 | struct elf_reloc_map | |
864 | { | |
865 | bfd_reloc_code_real_type bfd_val; | |
866 | enum elf_riscv_reloc_type elf_val; | |
867 | }; | |
868 | ||
869 | static const struct elf_reloc_map riscv_reloc_map[] = | |
870 | { | |
871 | { BFD_RELOC_NONE, R_RISCV_NONE }, | |
872 | { BFD_RELOC_32, R_RISCV_32 }, | |
873 | { BFD_RELOC_64, R_RISCV_64 }, | |
874 | { BFD_RELOC_RISCV_ADD8, R_RISCV_ADD8 }, | |
875 | { BFD_RELOC_RISCV_ADD16, R_RISCV_ADD16 }, | |
876 | { BFD_RELOC_RISCV_ADD32, R_RISCV_ADD32 }, | |
877 | { BFD_RELOC_RISCV_ADD64, R_RISCV_ADD64 }, | |
878 | { BFD_RELOC_RISCV_SUB8, R_RISCV_SUB8 }, | |
879 | { BFD_RELOC_RISCV_SUB16, R_RISCV_SUB16 }, | |
880 | { BFD_RELOC_RISCV_SUB32, R_RISCV_SUB32 }, | |
881 | { BFD_RELOC_RISCV_SUB64, R_RISCV_SUB64 }, | |
882 | { BFD_RELOC_CTOR, R_RISCV_64 }, | |
883 | { BFD_RELOC_12_PCREL, R_RISCV_BRANCH }, | |
884 | { BFD_RELOC_RISCV_HI20, R_RISCV_HI20 }, | |
885 | { BFD_RELOC_RISCV_LO12_I, R_RISCV_LO12_I }, | |
886 | { BFD_RELOC_RISCV_LO12_S, R_RISCV_LO12_S }, | |
887 | { BFD_RELOC_RISCV_PCREL_LO12_I, R_RISCV_PCREL_LO12_I }, | |
888 | { BFD_RELOC_RISCV_PCREL_LO12_S, R_RISCV_PCREL_LO12_S }, | |
889 | { BFD_RELOC_RISCV_CALL, R_RISCV_CALL }, | |
890 | { BFD_RELOC_RISCV_CALL_PLT, R_RISCV_CALL_PLT }, | |
891 | { BFD_RELOC_RISCV_PCREL_HI20, R_RISCV_PCREL_HI20 }, | |
892 | { BFD_RELOC_RISCV_JMP, R_RISCV_JAL }, | |
893 | { BFD_RELOC_RISCV_GOT_HI20, R_RISCV_GOT_HI20 }, | |
894 | { BFD_RELOC_RISCV_TLS_DTPMOD32, R_RISCV_TLS_DTPMOD32 }, | |
895 | { BFD_RELOC_RISCV_TLS_DTPREL32, R_RISCV_TLS_DTPREL32 }, | |
896 | { BFD_RELOC_RISCV_TLS_DTPMOD64, R_RISCV_TLS_DTPMOD64 }, | |
897 | { BFD_RELOC_RISCV_TLS_DTPREL64, R_RISCV_TLS_DTPREL64 }, | |
898 | { BFD_RELOC_RISCV_TLS_TPREL32, R_RISCV_TLS_TPREL32 }, | |
899 | { BFD_RELOC_RISCV_TLS_TPREL64, R_RISCV_TLS_TPREL64 }, | |
900 | { BFD_RELOC_RISCV_TPREL_HI20, R_RISCV_TPREL_HI20 }, | |
901 | { BFD_RELOC_RISCV_TPREL_ADD, R_RISCV_TPREL_ADD }, | |
902 | { BFD_RELOC_RISCV_TPREL_LO12_S, R_RISCV_TPREL_LO12_S }, | |
903 | { BFD_RELOC_RISCV_TPREL_LO12_I, R_RISCV_TPREL_LO12_I }, | |
904 | { BFD_RELOC_RISCV_TLS_GOT_HI20, R_RISCV_TLS_GOT_HI20 }, | |
905 | { BFD_RELOC_RISCV_TLS_GD_HI20, R_RISCV_TLS_GD_HI20 }, | |
906 | { BFD_RELOC_RISCV_ALIGN, R_RISCV_ALIGN }, | |
907 | { BFD_RELOC_RISCV_RVC_BRANCH, R_RISCV_RVC_BRANCH }, | |
908 | { BFD_RELOC_RISCV_RVC_JUMP, R_RISCV_RVC_JUMP }, | |
909 | { BFD_RELOC_RISCV_RVC_LUI, R_RISCV_RVC_LUI }, | |
910 | { BFD_RELOC_RISCV_GPREL_I, R_RISCV_GPREL_I }, | |
911 | { BFD_RELOC_RISCV_GPREL_S, R_RISCV_GPREL_S }, | |
45f76423 AW |
912 | { BFD_RELOC_RISCV_TPREL_I, R_RISCV_TPREL_I }, |
913 | { BFD_RELOC_RISCV_TPREL_S, R_RISCV_TPREL_S }, | |
914 | { BFD_RELOC_RISCV_RELAX, R_RISCV_RELAX }, | |
915 | { BFD_RELOC_RISCV_SUB6, R_RISCV_SUB6 }, | |
916 | { BFD_RELOC_RISCV_SET6, R_RISCV_SET6 }, | |
917 | { BFD_RELOC_RISCV_SET8, R_RISCV_SET8 }, | |
918 | { BFD_RELOC_RISCV_SET16, R_RISCV_SET16 }, | |
919 | { BFD_RELOC_RISCV_SET32, R_RISCV_SET32 }, | |
a6cbf936 | 920 | { BFD_RELOC_RISCV_32_PCREL, R_RISCV_32_PCREL }, |
e23eba97 NC |
921 | }; |
922 | ||
923 | /* Given a BFD reloc type, return a howto structure. */ | |
924 | ||
925 | reloc_howto_type * | |
926 | riscv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
927 | bfd_reloc_code_real_type code) | |
928 | { | |
929 | unsigned int i; | |
930 | ||
931 | for (i = 0; i < ARRAY_SIZE (riscv_reloc_map); i++) | |
932 | if (riscv_reloc_map[i].bfd_val == code) | |
933 | return &howto_table[(int) riscv_reloc_map[i].elf_val]; | |
934 | ||
935 | bfd_set_error (bfd_error_bad_value); | |
936 | return NULL; | |
937 | } | |
938 | ||
939 | reloc_howto_type * | |
940 | riscv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
941 | { | |
942 | unsigned int i; | |
943 | ||
944 | for (i = 0; i < ARRAY_SIZE (howto_table); i++) | |
945 | if (howto_table[i].name && strcasecmp (howto_table[i].name, r_name) == 0) | |
946 | return &howto_table[i]; | |
947 | ||
948 | return NULL; | |
949 | } | |
950 | ||
951 | reloc_howto_type * | |
0aa13fee | 952 | riscv_elf_rtype_to_howto (bfd *abfd, unsigned int r_type) |
e23eba97 NC |
953 | { |
954 | if (r_type >= ARRAY_SIZE (howto_table)) | |
955 | { | |
0aa13fee AM |
956 | (*_bfd_error_handler) (_("%pB: unsupported relocation type %#x"), |
957 | abfd, r_type); | |
e23eba97 NC |
958 | bfd_set_error (bfd_error_bad_value); |
959 | return NULL; | |
960 | } | |
961 | return &howto_table[r_type]; | |
962 | } | |
57593436 KLC |
963 | |
964 | /* Special_function of RISCV_ADD and RISCV_SUB relocations. */ | |
965 | ||
966 | static bfd_reloc_status_type | |
967 | riscv_elf_add_sub_reloc (bfd *abfd, | |
968 | arelent *reloc_entry, | |
969 | asymbol *symbol, | |
970 | void *data, | |
971 | asection *input_section, | |
972 | bfd *output_bfd, | |
973 | char **error_message ATTRIBUTE_UNUSED) | |
974 | { | |
975 | reloc_howto_type *howto = reloc_entry->howto; | |
976 | bfd_vma relocation; | |
977 | ||
978 | if (output_bfd != NULL | |
979 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
980 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
981 | { | |
982 | reloc_entry->address += input_section->output_offset; | |
983 | return bfd_reloc_ok; | |
984 | } | |
985 | ||
986 | if (output_bfd != NULL) | |
987 | return bfd_reloc_continue; | |
988 | ||
989 | relocation = symbol->value + symbol->section->output_section->vma | |
990 | + symbol->section->output_offset + reloc_entry->addend; | |
991 | bfd_vma old_value = bfd_get (howto->bitsize, abfd, | |
992 | data + reloc_entry->address); | |
993 | ||
994 | switch (howto->type) | |
995 | { | |
996 | case R_RISCV_ADD8: | |
997 | case R_RISCV_ADD16: | |
998 | case R_RISCV_ADD32: | |
999 | case R_RISCV_ADD64: | |
1000 | relocation = old_value + relocation; | |
1001 | break; | |
1002 | case R_RISCV_SUB6: | |
1003 | case R_RISCV_SUB8: | |
1004 | case R_RISCV_SUB16: | |
1005 | case R_RISCV_SUB32: | |
1006 | case R_RISCV_SUB64: | |
1007 | relocation = old_value - relocation; | |
1008 | break; | |
1009 | } | |
1010 | bfd_put (howto->bitsize, abfd, relocation, data + reloc_entry->address); | |
1011 | ||
1012 | return bfd_reloc_ok; | |
1013 | } | |
1080bf78 JW |
1014 | |
1015 | /* Parsing subset version. | |
1016 | ||
1017 | Return Value: | |
1018 | Points to the end of version | |
1019 | ||
1020 | Arguments: | |
1021 | `rps`: Hooks and status for parsing subset. | |
1022 | `march`: Full arch string. | |
1023 | `p`: Curent parsing position. | |
1024 | `major_version`: Parsing result of major version, using | |
1025 | default_major_version if version is not present in arch string. | |
1026 | `minor_version`: Parsing result of minor version, set to 0 if version is | |
1027 | not present in arch string, but set to `default_minor_version` if | |
1028 | `major_version` using default_major_version. | |
1029 | `default_major_version`: Default major version. | |
1030 | `default_minor_version`: Default minor version. | |
1031 | `std_ext_p`: True if parsing std extension. */ | |
1032 | ||
1033 | static const char * | |
1034 | riscv_parsing_subset_version (riscv_parse_subset_t *rps, | |
1035 | const char *march, | |
1036 | const char *p, | |
1037 | unsigned *major_version, | |
1038 | unsigned *minor_version, | |
1039 | unsigned default_major_version, | |
1040 | unsigned default_minor_version, | |
1041 | bfd_boolean std_ext_p) | |
1042 | { | |
1043 | bfd_boolean major_p = TRUE; | |
1044 | unsigned version = 0; | |
1045 | unsigned major = 0; | |
1046 | unsigned minor = 0; | |
1047 | char np; | |
1048 | ||
1049 | for (;*p; ++p) | |
1050 | { | |
1051 | if (*p == 'p') | |
1052 | { | |
1053 | np = *(p + 1); | |
1054 | ||
1055 | if (!ISDIGIT (np)) | |
1056 | { | |
1057 | /* Might be beginning of `p` extension. */ | |
1058 | if (std_ext_p) | |
1059 | { | |
1060 | *major_version = version; | |
1061 | *minor_version = 0; | |
1062 | return p; | |
1063 | } | |
1064 | else | |
1065 | { | |
1066 | rps->error_handler ("-march=%s: Expect number after `%dp'.", | |
1067 | march, version); | |
1068 | return NULL; | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | major = version; | |
1073 | major_p = FALSE; | |
1074 | version = 0; | |
1075 | } | |
1076 | else if (ISDIGIT (*p)) | |
1077 | version = (version * 10) + (*p - '0'); | |
1078 | else | |
1079 | break; | |
1080 | } | |
1081 | ||
1082 | if (major_p) | |
1083 | major = version; | |
1084 | else | |
1085 | minor = version; | |
1086 | ||
1087 | if (major == 0 && minor == 0) | |
1088 | { | |
1089 | /* We don't found any version string, use default version. */ | |
1090 | *major_version = default_major_version; | |
1091 | *minor_version = default_minor_version; | |
1092 | } | |
1093 | else | |
1094 | { | |
1095 | *major_version = major; | |
1096 | *minor_version = minor; | |
1097 | } | |
1098 | return p; | |
1099 | } | |
1100 | ||
1101 | /* Return string which contain all supported standard extensions in | |
1102 | canonical order. */ | |
1103 | ||
1104 | const char * | |
1105 | riscv_supported_std_ext (void) | |
1106 | { | |
1107 | return "mafdqlcbjtpvn"; | |
1108 | } | |
1109 | ||
1110 | /* Parsing function for standard extensions. | |
1111 | ||
1112 | Return Value: | |
1113 | Points to the end of extensions. | |
1114 | ||
1115 | Arguments: | |
1116 | `rps`: Hooks and status for parsing subset. | |
1117 | `march`: Full arch string. | |
1118 | `p`: Curent parsing position. */ | |
1119 | ||
1120 | static const char * | |
1121 | riscv_parse_std_ext (riscv_parse_subset_t *rps, | |
1122 | const char *march, const char *p) | |
1123 | { | |
1124 | const char *all_std_exts = riscv_supported_std_ext (); | |
1125 | const char *std_exts = all_std_exts; | |
1126 | ||
1127 | unsigned major_version = 0; | |
1128 | unsigned minor_version = 0; | |
1129 | char std_ext = '\0'; | |
1130 | ||
1131 | /* First letter must start with i, e or g. */ | |
1132 | switch (*p) | |
1133 | { | |
1134 | case 'i': | |
1135 | p++; | |
1136 | p = riscv_parsing_subset_version ( | |
1137 | rps, | |
1138 | march, | |
1139 | p, &major_version, &minor_version, | |
1140 | /* default_major_version= */ 2, | |
1141 | /* default_minor_version= */ 0, | |
1142 | /* std_ext_p= */TRUE); | |
1143 | riscv_add_subset (rps->subset_list, "i", major_version, minor_version); | |
1144 | break; | |
1145 | ||
1146 | case 'e': | |
1147 | p++; | |
1148 | p = riscv_parsing_subset_version ( | |
1149 | rps, | |
1150 | march, | |
1151 | p, &major_version, &minor_version, | |
1152 | /* default_major_version= */ 1, | |
1153 | /* default_minor_version= */ 9, | |
1154 | /* std_ext_p= */TRUE); | |
1155 | ||
1156 | riscv_add_subset (rps->subset_list, "e", major_version, minor_version); | |
1157 | riscv_add_subset (rps->subset_list, "i", 2, 0); | |
1158 | ||
1159 | if (*rps->xlen > 32) | |
1160 | { | |
1161 | rps->error_handler ("-march=%s: rv%de is not a valid base ISA", | |
1162 | march, *rps->xlen); | |
1163 | return NULL; | |
1164 | } | |
1165 | ||
1166 | break; | |
1167 | ||
1168 | case 'g': | |
1169 | p++; | |
1170 | p = riscv_parsing_subset_version ( | |
1171 | rps, | |
1172 | march, | |
1173 | p, &major_version, &minor_version, | |
1174 | /* default_major_version= */ 2, | |
1175 | /* default_minor_version= */ 0, | |
1176 | /* std_ext_p= */TRUE); | |
1177 | riscv_add_subset (rps->subset_list, "i", major_version, minor_version); | |
1178 | ||
1179 | for ( ; *std_exts != 'q'; std_exts++) | |
1180 | { | |
1181 | const char subset[] = {*std_exts, '\0'}; | |
1182 | riscv_add_subset ( | |
1183 | rps->subset_list, subset, major_version, minor_version); | |
1184 | } | |
1185 | break; | |
1186 | ||
1187 | default: | |
1188 | rps->error_handler ( | |
1189 | "-march=%s: first ISA subset must be `e', `i' or `g'", march); | |
1190 | return NULL; | |
1191 | } | |
1192 | ||
1193 | while (*p) | |
1194 | { | |
1195 | char subset[2] = {0, 0}; | |
1196 | ||
1197 | if (*p == 'x' || *p == 's') | |
1198 | break; | |
1199 | ||
1200 | if (*p == '_') | |
1201 | { | |
1202 | p++; | |
1203 | continue; | |
1204 | } | |
1205 | ||
1206 | std_ext = *p; | |
1207 | ||
1208 | /* Checking canonical order. */ | |
1209 | while (*std_exts && std_ext != *std_exts) std_exts++; | |
1210 | ||
1211 | if (std_ext != *std_exts) | |
1212 | { | |
1213 | if (strchr (all_std_exts, std_ext) == NULL) | |
1214 | rps->error_handler ( | |
1215 | "-march=%s: unsupported ISA subset `%c'", march, *p); | |
1216 | else | |
1217 | rps->error_handler ( | |
1218 | "-march=%s: ISA string is not in canonical order. `%c'", | |
1219 | march, *p); | |
1220 | return NULL; | |
1221 | } | |
1222 | ||
1223 | std_exts++; | |
1224 | ||
1225 | p++; | |
1226 | p = riscv_parsing_subset_version ( | |
1227 | rps, | |
1228 | march, | |
1229 | p, &major_version, &minor_version, | |
1230 | /* default_major_version= */ 2, | |
1231 | /* default_minor_version= */ 0, | |
1232 | /* std_ext_p= */TRUE); | |
1233 | ||
1234 | subset[0] = std_ext; | |
1235 | ||
1236 | riscv_add_subset (rps->subset_list, subset, major_version, minor_version); | |
1237 | } | |
1238 | return p; | |
1239 | } | |
1240 | ||
1241 | /* Parsing function for non-standard and supervisor extensions. | |
1242 | ||
1243 | Return Value: | |
1244 | Points to the end of extensions. | |
1245 | ||
1246 | Arguments: | |
1247 | `rps`: Hooks and status for parsing subset. | |
1248 | `march`: Full arch string. | |
1249 | `p`: Curent parsing position. | |
1250 | `ext_type`: What kind of extensions, 'x', 's' or 'sx'. | |
1251 | `ext_type_str`: Full name for kind of extension. */ | |
1252 | ||
1253 | static const char * | |
1254 | riscv_parse_sv_or_non_std_ext (riscv_parse_subset_t *rps, | |
1255 | const char *march, | |
1256 | const char *p, | |
1257 | const char *ext_type, | |
1258 | const char *ext_type_str) | |
1259 | { | |
1260 | unsigned major_version = 0; | |
1261 | unsigned minor_version = 0; | |
1262 | size_t ext_type_len = strlen (ext_type); | |
1263 | ||
1264 | while (*p) | |
1265 | { | |
1266 | if (*p == '_') | |
1267 | { | |
1268 | p++; | |
1269 | continue; | |
1270 | } | |
1271 | ||
1272 | if (strncmp (p, ext_type, ext_type_len) != 0) | |
1273 | break; | |
1274 | ||
1275 | /* It's non-standard supervisor extension if it prefix with sx. */ | |
1276 | if ((ext_type[0] == 's') && (ext_type_len == 1) | |
1277 | && (*(p + 1) == 'x')) | |
1278 | break; | |
1279 | ||
1280 | char *subset = xstrdup (p); | |
1281 | char *q = subset; | |
1282 | const char *end_of_version; | |
1283 | ||
1284 | while (*++q != '\0' && *q != '_' && !ISDIGIT (*q)) | |
1285 | ; | |
1286 | ||
1287 | end_of_version = | |
1288 | riscv_parsing_subset_version ( | |
1289 | rps, | |
1290 | march, | |
1291 | q, &major_version, &minor_version, | |
1292 | /* default_major_version= */ 2, | |
1293 | /* default_minor_version= */ 0, | |
1294 | /* std_ext_p= */FALSE); | |
1295 | ||
1296 | *q = '\0'; | |
1297 | ||
1298 | riscv_add_subset (rps->subset_list, subset, major_version, minor_version); | |
1299 | free (subset); | |
1300 | p += end_of_version - subset; | |
1301 | ||
1302 | if (*p != '\0' && *p != '_') | |
1303 | { | |
1304 | rps->error_handler ("-march=%s: %s must seperate with _", | |
1305 | march, ext_type_str); | |
1306 | return NULL; | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | return p; | |
1311 | } | |
1312 | ||
1313 | /* Function for parsing arch string. | |
1314 | ||
1315 | Return Value: | |
1316 | Return TRUE on success. | |
1317 | ||
1318 | Arguments: | |
1319 | `rps`: Hooks and status for parsing subset. | |
1320 | `arch`: Arch string. */ | |
1321 | ||
1322 | bfd_boolean | |
1323 | riscv_parse_subset (riscv_parse_subset_t *rps, | |
1324 | const char *arch) | |
1325 | { | |
1326 | const char *p = arch; | |
1327 | ||
1328 | if (strncmp (p, "rv32", 4) == 0) | |
1329 | { | |
1330 | *rps->xlen = 32; | |
1331 | p += 4; | |
1332 | } | |
1333 | else if (strncmp (p, "rv64", 4) == 0) | |
1334 | { | |
1335 | *rps->xlen = 64; | |
1336 | p += 4; | |
1337 | } | |
1338 | else | |
1339 | { | |
1340 | rps->error_handler ("-march=%s: ISA string must begin with rv32 or rv64", | |
1341 | arch); | |
1342 | return FALSE; | |
1343 | } | |
1344 | ||
1345 | /* Parsing standard extension. */ | |
1346 | p = riscv_parse_std_ext (rps, arch, p); | |
1347 | ||
1348 | if (p == NULL) | |
1349 | return FALSE; | |
1350 | ||
1351 | /* Parsing non-standard extension. */ | |
1352 | p = riscv_parse_sv_or_non_std_ext ( | |
1353 | rps, arch, p, "x", "non-standard extension"); | |
1354 | ||
1355 | if (p == NULL) | |
1356 | return FALSE; | |
1357 | ||
1358 | /* Parsing supervisor extension. */ | |
1359 | p = riscv_parse_sv_or_non_std_ext ( | |
1360 | rps, arch, p, "s", "supervisor extension"); | |
1361 | ||
1362 | if (p == NULL) | |
1363 | return FALSE; | |
1364 | ||
1365 | /* Parsing non-standard supervisor extension. */ | |
1366 | p = riscv_parse_sv_or_non_std_ext ( | |
1367 | rps, arch, p, "sx", "non-standard supervisor extension"); | |
1368 | ||
1369 | if (p == NULL) | |
1370 | return FALSE; | |
1371 | ||
1372 | if (*p != '\0') | |
1373 | { | |
1374 | rps->error_handler ("-march=%s: unexpected ISA string at end: %s", | |
1375 | arch, p); | |
1376 | return FALSE; | |
1377 | } | |
1378 | ||
1379 | if (riscv_lookup_subset (rps->subset_list, "e") | |
1380 | && riscv_lookup_subset (rps->subset_list, "f")) | |
1381 | { | |
1382 | rps->error_handler ("-march=%s: rv32e does not support the `f' extension", | |
1383 | arch); | |
1384 | return FALSE; | |
1385 | } | |
1386 | ||
1387 | if (riscv_lookup_subset (rps->subset_list, "d") | |
1388 | && !riscv_lookup_subset (rps->subset_list, "f")) | |
1389 | { | |
1390 | rps->error_handler ("-march=%s: `d' extension requires `f' extension", | |
1391 | arch); | |
1392 | return FALSE; | |
1393 | } | |
1394 | ||
1395 | if (riscv_lookup_subset (rps->subset_list, "q") | |
1396 | && !riscv_lookup_subset (rps->subset_list, "d")) | |
1397 | { | |
1398 | rps->error_handler ("-march=%s: `q' extension requires `d' extension", | |
1399 | arch); | |
1400 | return FALSE; | |
1401 | } | |
1402 | ||
1403 | if (riscv_lookup_subset (rps->subset_list, "q") && *rps->xlen < 64) | |
1404 | { | |
1405 | rps->error_handler ("-march=%s: rv32 does not support the `q' extension", | |
1406 | arch); | |
1407 | return FALSE; | |
1408 | } | |
1409 | return TRUE; | |
1410 | } | |
1411 | ||
1412 | /* Add new subset to list. */ | |
1413 | ||
1414 | void | |
1415 | riscv_add_subset (riscv_subset_list_t *subset_list, | |
1416 | const char *subset, | |
1417 | int major, int minor) | |
1418 | { | |
1419 | riscv_subset_t *s = xmalloc (sizeof *s); | |
1420 | ||
1421 | if (subset_list->head == NULL) | |
1422 | subset_list->head = s; | |
1423 | ||
1424 | s->name = xstrdup (subset); | |
1425 | s->major_version = major; | |
1426 | s->minor_version = minor; | |
1427 | s->next = NULL; | |
1428 | ||
1429 | if (subset_list->tail != NULL) | |
1430 | subset_list->tail->next = s; | |
1431 | ||
1432 | subset_list->tail = s; | |
1433 | } | |
1434 | ||
1435 | /* Find subset in list without version checking, return NULL if not found. */ | |
1436 | ||
1437 | riscv_subset_t * | |
1438 | riscv_lookup_subset (const riscv_subset_list_t *subset_list, | |
1439 | const char *subset) | |
1440 | { | |
1441 | return riscv_lookup_subset_version ( | |
1442 | subset_list, subset, | |
1443 | RISCV_DONT_CARE_VERSION, | |
1444 | RISCV_DONT_CARE_VERSION); | |
1445 | } | |
1446 | ||
1447 | /* Find subset in list with version checking, return NULL if not found. */ | |
1448 | ||
1449 | riscv_subset_t * | |
1450 | riscv_lookup_subset_version (const riscv_subset_list_t *subset_list, | |
1451 | const char *subset, | |
1452 | int major, int minor) | |
1453 | { | |
1454 | riscv_subset_t *s; | |
1455 | ||
1456 | for (s = subset_list->head; s != NULL; s = s->next) | |
1457 | if (strcasecmp (s->name, subset) == 0) | |
1458 | { | |
1459 | if ((major != RISCV_DONT_CARE_VERSION) | |
1460 | && (s->major_version != major)) | |
1461 | return NULL; | |
1462 | ||
1463 | if ((minor != RISCV_DONT_CARE_VERSION) | |
1464 | && (s->minor_version != minor)) | |
1465 | return NULL; | |
1466 | ||
1467 | return s; | |
1468 | } | |
1469 | ||
1470 | return NULL; | |
1471 | } | |
1472 | ||
1473 | /* Release subset list. */ | |
1474 | ||
1475 | void | |
1476 | riscv_release_subset_list (riscv_subset_list_t *subset_list) | |
1477 | { | |
1478 | while (subset_list->head != NULL) | |
1479 | { | |
1480 | riscv_subset_t *next = subset_list->head->next; | |
1481 | free ((void *)subset_list->head->name); | |
1482 | free (subset_list->head); | |
1483 | subset_list->head = next; | |
1484 | } | |
1485 | ||
1486 | subset_list->tail = NULL; | |
1487 | } |