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e23eba97 | 1 | /* RISC-V-specific support for ELF. |
b3adc24a | 2 | Copyright (C) 2011-2020 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" | |
e23eba97 NC |
28 | #include "libiberty.h" |
29 | #include "elfxx-riscv.h" | |
1080bf78 | 30 | #include "safe-ctype.h" |
e23eba97 NC |
31 | |
32 | #define MINUS_ONE ((bfd_vma)0 - 1) | |
33 | ||
57593436 KLC |
34 | /* Special handler for ADD/SUB relocations that allows them to be filled out |
35 | both in the pre-linked and post-linked file. This is necessary to make | |
36 | pre-linked debug info work, as due to linker relaxations we need to emit | |
37 | relocations for the debug info. */ | |
38 | static bfd_reloc_status_type riscv_elf_add_sub_reloc | |
39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
40 | ||
e23eba97 NC |
41 | /* The relocation table used for SHT_RELA sections. */ |
42 | ||
43 | static reloc_howto_type howto_table[] = | |
44 | { | |
45 | /* No relocation. */ | |
46 | HOWTO (R_RISCV_NONE, /* type */ | |
47 | 0, /* rightshift */ | |
48 | 3, /* size */ | |
49 | 0, /* bitsize */ | |
50 | FALSE, /* pc_relative */ | |
51 | 0, /* bitpos */ | |
52 | complain_overflow_dont, /* complain_on_overflow */ | |
53 | bfd_elf_generic_reloc, /* special_function */ | |
54 | "R_RISCV_NONE", /* name */ | |
55 | FALSE, /* partial_inplace */ | |
56 | 0, /* src_mask */ | |
57 | 0, /* dst_mask */ | |
58 | FALSE), /* pcrel_offset */ | |
59 | ||
60 | /* 32 bit relocation. */ | |
61 | HOWTO (R_RISCV_32, /* type */ | |
62 | 0, /* rightshift */ | |
63 | 2, /* size */ | |
64 | 32, /* bitsize */ | |
65 | FALSE, /* pc_relative */ | |
66 | 0, /* bitpos */ | |
67 | complain_overflow_dont, /* complain_on_overflow */ | |
68 | bfd_elf_generic_reloc, /* special_function */ | |
69 | "R_RISCV_32", /* name */ | |
70 | FALSE, /* partial_inplace */ | |
71 | 0, /* src_mask */ | |
1d65abb5 | 72 | MINUS_ONE, /* dst_mask */ |
e23eba97 NC |
73 | FALSE), /* pcrel_offset */ |
74 | ||
75 | /* 64 bit relocation. */ | |
76 | HOWTO (R_RISCV_64, /* type */ | |
77 | 0, /* rightshift */ | |
78 | 4, /* size */ | |
79 | 64, /* bitsize */ | |
80 | FALSE, /* pc_relative */ | |
81 | 0, /* bitpos */ | |
82 | complain_overflow_dont, /* complain_on_overflow */ | |
83 | bfd_elf_generic_reloc, /* special_function */ | |
84 | "R_RISCV_64", /* name */ | |
85 | FALSE, /* partial_inplace */ | |
86 | 0, /* src_mask */ | |
87 | MINUS_ONE, /* dst_mask */ | |
88 | FALSE), /* pcrel_offset */ | |
89 | ||
90 | /* Relocation against a local symbol in a shared object. */ | |
91 | HOWTO (R_RISCV_RELATIVE, /* type */ | |
92 | 0, /* rightshift */ | |
93 | 2, /* size */ | |
94 | 32, /* bitsize */ | |
95 | FALSE, /* pc_relative */ | |
96 | 0, /* bitpos */ | |
97 | complain_overflow_dont, /* complain_on_overflow */ | |
98 | bfd_elf_generic_reloc, /* special_function */ | |
99 | "R_RISCV_RELATIVE", /* name */ | |
100 | FALSE, /* partial_inplace */ | |
101 | 0, /* src_mask */ | |
1d65abb5 | 102 | MINUS_ONE, /* dst_mask */ |
e23eba97 NC |
103 | FALSE), /* pcrel_offset */ |
104 | ||
105 | HOWTO (R_RISCV_COPY, /* type */ | |
106 | 0, /* rightshift */ | |
107 | 0, /* this one is variable size */ | |
108 | 0, /* bitsize */ | |
109 | FALSE, /* pc_relative */ | |
110 | 0, /* bitpos */ | |
111 | complain_overflow_bitfield, /* complain_on_overflow */ | |
112 | bfd_elf_generic_reloc, /* special_function */ | |
113 | "R_RISCV_COPY", /* name */ | |
114 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
115 | 0, /* src_mask */ |
116 | 0, /* dst_mask */ | |
e23eba97 NC |
117 | FALSE), /* pcrel_offset */ |
118 | ||
119 | HOWTO (R_RISCV_JUMP_SLOT, /* type */ | |
120 | 0, /* rightshift */ | |
121 | 4, /* size */ | |
122 | 64, /* bitsize */ | |
123 | FALSE, /* pc_relative */ | |
124 | 0, /* bitpos */ | |
125 | complain_overflow_bitfield, /* complain_on_overflow */ | |
126 | bfd_elf_generic_reloc, /* special_function */ | |
127 | "R_RISCV_JUMP_SLOT", /* name */ | |
128 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
129 | 0, /* src_mask */ |
130 | 0, /* dst_mask */ | |
e23eba97 NC |
131 | FALSE), /* pcrel_offset */ |
132 | ||
133 | /* Dynamic TLS relocations. */ | |
134 | HOWTO (R_RISCV_TLS_DTPMOD32, /* type */ | |
135 | 0, /* rightshift */ | |
136 | 4, /* size */ | |
137 | 32, /* bitsize */ | |
138 | FALSE, /* pc_relative */ | |
139 | 0, /* bitpos */ | |
140 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 141 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
142 | "R_RISCV_TLS_DTPMOD32", /* name */ |
143 | FALSE, /* partial_inplace */ | |
1d65abb5 | 144 | 0, /* src_mask */ |
e23eba97 NC |
145 | MINUS_ONE, /* dst_mask */ |
146 | FALSE), /* pcrel_offset */ | |
147 | ||
148 | HOWTO (R_RISCV_TLS_DTPMOD64, /* type */ | |
149 | 0, /* rightshift */ | |
150 | 4, /* size */ | |
151 | 64, /* bitsize */ | |
152 | FALSE, /* pc_relative */ | |
153 | 0, /* bitpos */ | |
154 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 155 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
156 | "R_RISCV_TLS_DTPMOD64", /* name */ |
157 | FALSE, /* partial_inplace */ | |
1d65abb5 | 158 | 0, /* src_mask */ |
e23eba97 NC |
159 | MINUS_ONE, /* dst_mask */ |
160 | FALSE), /* pcrel_offset */ | |
161 | ||
162 | HOWTO (R_RISCV_TLS_DTPREL32, /* type */ | |
163 | 0, /* rightshift */ | |
164 | 4, /* size */ | |
165 | 32, /* bitsize */ | |
166 | FALSE, /* pc_relative */ | |
167 | 0, /* bitpos */ | |
168 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 169 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
170 | "R_RISCV_TLS_DTPREL32", /* name */ |
171 | TRUE, /* partial_inplace */ | |
1d65abb5 | 172 | 0, /* src_mask */ |
e23eba97 NC |
173 | MINUS_ONE, /* dst_mask */ |
174 | FALSE), /* pcrel_offset */ | |
175 | ||
176 | HOWTO (R_RISCV_TLS_DTPREL64, /* type */ | |
177 | 0, /* rightshift */ | |
178 | 4, /* size */ | |
179 | 64, /* bitsize */ | |
180 | FALSE, /* pc_relative */ | |
181 | 0, /* bitpos */ | |
182 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 183 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
184 | "R_RISCV_TLS_DTPREL64", /* name */ |
185 | TRUE, /* partial_inplace */ | |
1d65abb5 | 186 | 0, /* src_mask */ |
e23eba97 NC |
187 | MINUS_ONE, /* dst_mask */ |
188 | FALSE), /* pcrel_offset */ | |
189 | ||
190 | HOWTO (R_RISCV_TLS_TPREL32, /* type */ | |
191 | 0, /* rightshift */ | |
192 | 2, /* size */ | |
193 | 32, /* bitsize */ | |
194 | FALSE, /* pc_relative */ | |
195 | 0, /* bitpos */ | |
196 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 197 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
198 | "R_RISCV_TLS_TPREL32", /* name */ |
199 | FALSE, /* partial_inplace */ | |
1d65abb5 | 200 | 0, /* src_mask */ |
e23eba97 NC |
201 | MINUS_ONE, /* dst_mask */ |
202 | FALSE), /* pcrel_offset */ | |
203 | ||
204 | HOWTO (R_RISCV_TLS_TPREL64, /* type */ | |
205 | 0, /* rightshift */ | |
206 | 4, /* size */ | |
207 | 64, /* bitsize */ | |
208 | FALSE, /* pc_relative */ | |
209 | 0, /* bitpos */ | |
210 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 211 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
212 | "R_RISCV_TLS_TPREL64", /* name */ |
213 | FALSE, /* partial_inplace */ | |
1d65abb5 | 214 | 0, /* src_mask */ |
e23eba97 NC |
215 | MINUS_ONE, /* dst_mask */ |
216 | FALSE), /* pcrel_offset */ | |
217 | ||
218 | /* Reserved for future relocs that the dynamic linker must understand. */ | |
219 | EMPTY_HOWTO (12), | |
220 | EMPTY_HOWTO (13), | |
221 | EMPTY_HOWTO (14), | |
222 | EMPTY_HOWTO (15), | |
223 | ||
224 | /* 12-bit PC-relative branch offset. */ | |
225 | HOWTO (R_RISCV_BRANCH, /* type */ | |
226 | 0, /* rightshift */ | |
227 | 2, /* size */ | |
228 | 32, /* bitsize */ | |
229 | TRUE, /* pc_relative */ | |
230 | 0, /* bitpos */ | |
231 | complain_overflow_signed, /* complain_on_overflow */ | |
232 | bfd_elf_generic_reloc, /* special_function */ | |
233 | "R_RISCV_BRANCH", /* name */ | |
234 | FALSE, /* partial_inplace */ | |
235 | 0, /* src_mask */ | |
236 | ENCODE_SBTYPE_IMM (-1U), /* dst_mask */ | |
237 | TRUE), /* pcrel_offset */ | |
238 | ||
239 | /* 20-bit PC-relative jump offset. */ | |
240 | HOWTO (R_RISCV_JAL, /* type */ | |
241 | 0, /* rightshift */ | |
242 | 2, /* size */ | |
243 | 32, /* bitsize */ | |
244 | TRUE, /* pc_relative */ | |
245 | 0, /* bitpos */ | |
246 | complain_overflow_dont, /* complain_on_overflow */ | |
e23eba97 NC |
247 | bfd_elf_generic_reloc, /* special_function */ |
248 | "R_RISCV_JAL", /* name */ | |
249 | FALSE, /* partial_inplace */ | |
250 | 0, /* src_mask */ | |
251 | ENCODE_UJTYPE_IMM (-1U), /* dst_mask */ | |
252 | TRUE), /* pcrel_offset */ | |
253 | ||
254 | /* 32-bit PC-relative function call (AUIPC/JALR). */ | |
255 | HOWTO (R_RISCV_CALL, /* type */ | |
256 | 0, /* rightshift */ | |
257 | 2, /* size */ | |
258 | 64, /* bitsize */ | |
259 | TRUE, /* pc_relative */ | |
260 | 0, /* bitpos */ | |
261 | complain_overflow_dont, /* complain_on_overflow */ | |
262 | bfd_elf_generic_reloc, /* special_function */ | |
263 | "R_RISCV_CALL", /* name */ | |
264 | FALSE, /* partial_inplace */ | |
265 | 0, /* src_mask */ | |
266 | ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32), | |
267 | /* dst_mask */ | |
268 | TRUE), /* pcrel_offset */ | |
269 | ||
1d65abb5 | 270 | /* Like R_RISCV_CALL, but not locally binding. */ |
e23eba97 NC |
271 | HOWTO (R_RISCV_CALL_PLT, /* type */ |
272 | 0, /* rightshift */ | |
273 | 2, /* size */ | |
274 | 64, /* bitsize */ | |
275 | TRUE, /* pc_relative */ | |
276 | 0, /* bitpos */ | |
277 | complain_overflow_dont, /* complain_on_overflow */ | |
278 | bfd_elf_generic_reloc, /* special_function */ | |
279 | "R_RISCV_CALL_PLT", /* name */ | |
280 | FALSE, /* partial_inplace */ | |
281 | 0, /* src_mask */ | |
282 | ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32), | |
283 | /* dst_mask */ | |
284 | TRUE), /* pcrel_offset */ | |
285 | ||
286 | /* High 20 bits of 32-bit PC-relative GOT access. */ | |
287 | HOWTO (R_RISCV_GOT_HI20, /* type */ | |
288 | 0, /* rightshift */ | |
289 | 2, /* size */ | |
290 | 32, /* bitsize */ | |
291 | TRUE, /* pc_relative */ | |
292 | 0, /* bitpos */ | |
293 | complain_overflow_dont, /* complain_on_overflow */ | |
294 | bfd_elf_generic_reloc, /* special_function */ | |
295 | "R_RISCV_GOT_HI20", /* name */ | |
296 | FALSE, /* partial_inplace */ | |
297 | 0, /* src_mask */ | |
298 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
299 | FALSE), /* pcrel_offset */ | |
300 | ||
301 | /* High 20 bits of 32-bit PC-relative TLS IE GOT access. */ | |
302 | HOWTO (R_RISCV_TLS_GOT_HI20, /* type */ | |
303 | 0, /* rightshift */ | |
304 | 2, /* size */ | |
305 | 32, /* bitsize */ | |
306 | TRUE, /* pc_relative */ | |
307 | 0, /* bitpos */ | |
308 | complain_overflow_dont, /* complain_on_overflow */ | |
309 | bfd_elf_generic_reloc, /* special_function */ | |
310 | "R_RISCV_TLS_GOT_HI20", /* name */ | |
311 | FALSE, /* partial_inplace */ | |
312 | 0, /* src_mask */ | |
313 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
314 | FALSE), /* pcrel_offset */ | |
315 | ||
316 | /* High 20 bits of 32-bit PC-relative TLS GD GOT reference. */ | |
317 | HOWTO (R_RISCV_TLS_GD_HI20, /* type */ | |
318 | 0, /* rightshift */ | |
319 | 2, /* size */ | |
320 | 32, /* bitsize */ | |
321 | TRUE, /* pc_relative */ | |
322 | 0, /* bitpos */ | |
323 | complain_overflow_dont, /* complain_on_overflow */ | |
324 | bfd_elf_generic_reloc, /* special_function */ | |
325 | "R_RISCV_TLS_GD_HI20", /* name */ | |
326 | FALSE, /* partial_inplace */ | |
327 | 0, /* src_mask */ | |
328 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
329 | FALSE), /* pcrel_offset */ | |
330 | ||
331 | /* High 20 bits of 32-bit PC-relative reference. */ | |
332 | HOWTO (R_RISCV_PCREL_HI20, /* type */ | |
333 | 0, /* rightshift */ | |
334 | 2, /* size */ | |
335 | 32, /* bitsize */ | |
336 | TRUE, /* pc_relative */ | |
337 | 0, /* bitpos */ | |
338 | complain_overflow_dont, /* complain_on_overflow */ | |
339 | bfd_elf_generic_reloc, /* special_function */ | |
340 | "R_RISCV_PCREL_HI20", /* name */ | |
341 | FALSE, /* partial_inplace */ | |
342 | 0, /* src_mask */ | |
343 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
344 | TRUE), /* pcrel_offset */ | |
345 | ||
346 | /* Low 12 bits of a 32-bit PC-relative load or add. */ | |
347 | HOWTO (R_RISCV_PCREL_LO12_I, /* type */ | |
348 | 0, /* rightshift */ | |
349 | 2, /* size */ | |
350 | 32, /* bitsize */ | |
351 | FALSE, /* pc_relative */ | |
352 | 0, /* bitpos */ | |
353 | complain_overflow_dont, /* complain_on_overflow */ | |
354 | bfd_elf_generic_reloc, /* special_function */ | |
355 | "R_RISCV_PCREL_LO12_I", /* name */ | |
356 | FALSE, /* partial_inplace */ | |
357 | 0, /* src_mask */ | |
358 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
359 | FALSE), /* pcrel_offset */ | |
360 | ||
361 | /* Low 12 bits of a 32-bit PC-relative store. */ | |
362 | HOWTO (R_RISCV_PCREL_LO12_S, /* type */ | |
363 | 0, /* rightshift */ | |
364 | 2, /* size */ | |
365 | 32, /* bitsize */ | |
366 | FALSE, /* pc_relative */ | |
367 | 0, /* bitpos */ | |
368 | complain_overflow_dont, /* complain_on_overflow */ | |
369 | bfd_elf_generic_reloc, /* special_function */ | |
370 | "R_RISCV_PCREL_LO12_S", /* name */ | |
371 | FALSE, /* partial_inplace */ | |
372 | 0, /* src_mask */ | |
373 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
374 | FALSE), /* pcrel_offset */ | |
375 | ||
376 | /* High 20 bits of 32-bit absolute address. */ | |
377 | HOWTO (R_RISCV_HI20, /* type */ | |
378 | 0, /* rightshift */ | |
379 | 2, /* size */ | |
380 | 32, /* bitsize */ | |
381 | FALSE, /* pc_relative */ | |
382 | 0, /* bitpos */ | |
383 | complain_overflow_dont, /* complain_on_overflow */ | |
384 | bfd_elf_generic_reloc, /* special_function */ | |
385 | "R_RISCV_HI20", /* name */ | |
386 | FALSE, /* partial_inplace */ | |
387 | 0, /* src_mask */ | |
388 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
389 | FALSE), /* pcrel_offset */ | |
390 | ||
391 | /* High 12 bits of 32-bit load or add. */ | |
392 | HOWTO (R_RISCV_LO12_I, /* type */ | |
393 | 0, /* rightshift */ | |
394 | 2, /* size */ | |
395 | 32, /* bitsize */ | |
396 | FALSE, /* pc_relative */ | |
397 | 0, /* bitpos */ | |
398 | complain_overflow_dont, /* complain_on_overflow */ | |
399 | bfd_elf_generic_reloc, /* special_function */ | |
400 | "R_RISCV_LO12_I", /* name */ | |
401 | FALSE, /* partial_inplace */ | |
402 | 0, /* src_mask */ | |
403 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
404 | FALSE), /* pcrel_offset */ | |
405 | ||
406 | /* High 12 bits of 32-bit store. */ | |
407 | HOWTO (R_RISCV_LO12_S, /* type */ | |
408 | 0, /* rightshift */ | |
409 | 2, /* size */ | |
410 | 32, /* bitsize */ | |
411 | FALSE, /* pc_relative */ | |
412 | 0, /* bitpos */ | |
413 | complain_overflow_dont, /* complain_on_overflow */ | |
414 | bfd_elf_generic_reloc, /* special_function */ | |
415 | "R_RISCV_LO12_S", /* name */ | |
416 | FALSE, /* partial_inplace */ | |
417 | 0, /* src_mask */ | |
418 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
419 | FALSE), /* pcrel_offset */ | |
420 | ||
421 | /* High 20 bits of TLS LE thread pointer offset. */ | |
422 | HOWTO (R_RISCV_TPREL_HI20, /* type */ | |
423 | 0, /* rightshift */ | |
424 | 2, /* size */ | |
425 | 32, /* bitsize */ | |
426 | FALSE, /* pc_relative */ | |
427 | 0, /* bitpos */ | |
428 | complain_overflow_signed, /* complain_on_overflow */ | |
429 | bfd_elf_generic_reloc, /* special_function */ | |
430 | "R_RISCV_TPREL_HI20", /* name */ | |
431 | TRUE, /* partial_inplace */ | |
432 | 0, /* src_mask */ | |
433 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
434 | FALSE), /* pcrel_offset */ | |
435 | ||
436 | /* Low 12 bits of TLS LE thread pointer offset for loads and adds. */ | |
437 | HOWTO (R_RISCV_TPREL_LO12_I, /* type */ | |
438 | 0, /* rightshift */ | |
439 | 2, /* size */ | |
440 | 32, /* bitsize */ | |
441 | FALSE, /* pc_relative */ | |
442 | 0, /* bitpos */ | |
443 | complain_overflow_signed, /* complain_on_overflow */ | |
444 | bfd_elf_generic_reloc, /* special_function */ | |
445 | "R_RISCV_TPREL_LO12_I", /* name */ | |
446 | FALSE, /* partial_inplace */ | |
447 | 0, /* src_mask */ | |
448 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
449 | FALSE), /* pcrel_offset */ | |
450 | ||
451 | /* Low 12 bits of TLS LE thread pointer offset for stores. */ | |
452 | HOWTO (R_RISCV_TPREL_LO12_S, /* type */ | |
453 | 0, /* rightshift */ | |
454 | 2, /* size */ | |
455 | 32, /* bitsize */ | |
456 | FALSE, /* pc_relative */ | |
457 | 0, /* bitpos */ | |
458 | complain_overflow_signed, /* complain_on_overflow */ | |
459 | bfd_elf_generic_reloc, /* special_function */ | |
460 | "R_RISCV_TPREL_LO12_S", /* name */ | |
461 | FALSE, /* partial_inplace */ | |
462 | 0, /* src_mask */ | |
463 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
464 | FALSE), /* pcrel_offset */ | |
465 | ||
1d65abb5 | 466 | /* TLS LE thread pointer usage. May be relaxed. */ |
e23eba97 NC |
467 | HOWTO (R_RISCV_TPREL_ADD, /* type */ |
468 | 0, /* rightshift */ | |
469 | 2, /* size */ | |
470 | 32, /* bitsize */ | |
471 | FALSE, /* pc_relative */ | |
472 | 0, /* bitpos */ | |
473 | complain_overflow_dont, /* complain_on_overflow */ | |
474 | bfd_elf_generic_reloc, /* special_function */ | |
475 | "R_RISCV_TPREL_ADD", /* name */ | |
476 | TRUE, /* partial_inplace */ | |
477 | 0, /* src_mask */ | |
478 | 0, /* dst_mask */ | |
479 | FALSE), /* pcrel_offset */ | |
480 | ||
481 | /* 8-bit in-place addition, for local label subtraction. */ | |
482 | HOWTO (R_RISCV_ADD8, /* type */ | |
483 | 0, /* rightshift */ | |
484 | 0, /* size */ | |
0b14696a | 485 | 8, /* bitsize */ |
e23eba97 NC |
486 | FALSE, /* pc_relative */ |
487 | 0, /* bitpos */ | |
488 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 489 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
490 | "R_RISCV_ADD8", /* name */ |
491 | FALSE, /* partial_inplace */ | |
492 | 0, /* src_mask */ | |
493 | MINUS_ONE, /* dst_mask */ | |
494 | FALSE), /* pcrel_offset */ | |
495 | ||
496 | /* 16-bit in-place addition, for local label subtraction. */ | |
497 | HOWTO (R_RISCV_ADD16, /* type */ | |
498 | 0, /* rightshift */ | |
499 | 1, /* size */ | |
500 | 16, /* bitsize */ | |
501 | FALSE, /* pc_relative */ | |
502 | 0, /* bitpos */ | |
503 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 504 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
505 | "R_RISCV_ADD16", /* name */ |
506 | FALSE, /* partial_inplace */ | |
507 | 0, /* src_mask */ | |
508 | MINUS_ONE, /* dst_mask */ | |
509 | FALSE), /* pcrel_offset */ | |
510 | ||
511 | /* 32-bit in-place addition, for local label subtraction. */ | |
512 | HOWTO (R_RISCV_ADD32, /* type */ | |
513 | 0, /* rightshift */ | |
514 | 2, /* size */ | |
515 | 32, /* bitsize */ | |
516 | FALSE, /* pc_relative */ | |
517 | 0, /* bitpos */ | |
518 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 519 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
520 | "R_RISCV_ADD32", /* name */ |
521 | FALSE, /* partial_inplace */ | |
522 | 0, /* src_mask */ | |
523 | MINUS_ONE, /* dst_mask */ | |
524 | FALSE), /* pcrel_offset */ | |
525 | ||
526 | /* 64-bit in-place addition, for local label subtraction. */ | |
527 | HOWTO (R_RISCV_ADD64, /* type */ | |
528 | 0, /* rightshift */ | |
529 | 4, /* size */ | |
530 | 64, /* bitsize */ | |
531 | FALSE, /* pc_relative */ | |
532 | 0, /* bitpos */ | |
533 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 534 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
535 | "R_RISCV_ADD64", /* name */ |
536 | FALSE, /* partial_inplace */ | |
537 | 0, /* src_mask */ | |
538 | MINUS_ONE, /* dst_mask */ | |
539 | FALSE), /* pcrel_offset */ | |
540 | ||
541 | /* 8-bit in-place addition, for local label subtraction. */ | |
542 | HOWTO (R_RISCV_SUB8, /* type */ | |
543 | 0, /* rightshift */ | |
544 | 0, /* size */ | |
545 | 8, /* bitsize */ | |
546 | FALSE, /* pc_relative */ | |
547 | 0, /* bitpos */ | |
548 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 549 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
550 | "R_RISCV_SUB8", /* name */ |
551 | FALSE, /* partial_inplace */ | |
552 | 0, /* src_mask */ | |
553 | MINUS_ONE, /* dst_mask */ | |
554 | FALSE), /* pcrel_offset */ | |
555 | ||
556 | /* 16-bit in-place addition, for local label subtraction. */ | |
557 | HOWTO (R_RISCV_SUB16, /* type */ | |
558 | 0, /* rightshift */ | |
559 | 1, /* size */ | |
560 | 16, /* bitsize */ | |
561 | FALSE, /* pc_relative */ | |
562 | 0, /* bitpos */ | |
563 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 564 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
565 | "R_RISCV_SUB16", /* name */ |
566 | FALSE, /* partial_inplace */ | |
567 | 0, /* src_mask */ | |
568 | MINUS_ONE, /* dst_mask */ | |
569 | FALSE), /* pcrel_offset */ | |
570 | ||
571 | /* 32-bit in-place addition, for local label subtraction. */ | |
572 | HOWTO (R_RISCV_SUB32, /* type */ | |
573 | 0, /* rightshift */ | |
574 | 2, /* size */ | |
575 | 32, /* bitsize */ | |
576 | FALSE, /* pc_relative */ | |
577 | 0, /* bitpos */ | |
578 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 579 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
580 | "R_RISCV_SUB32", /* name */ |
581 | FALSE, /* partial_inplace */ | |
582 | 0, /* src_mask */ | |
583 | MINUS_ONE, /* dst_mask */ | |
584 | FALSE), /* pcrel_offset */ | |
585 | ||
586 | /* 64-bit in-place addition, for local label subtraction. */ | |
587 | HOWTO (R_RISCV_SUB64, /* type */ | |
588 | 0, /* rightshift */ | |
589 | 4, /* size */ | |
590 | 64, /* bitsize */ | |
591 | FALSE, /* pc_relative */ | |
592 | 0, /* bitpos */ | |
593 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 594 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
595 | "R_RISCV_SUB64", /* name */ |
596 | FALSE, /* partial_inplace */ | |
597 | 0, /* src_mask */ | |
598 | MINUS_ONE, /* dst_mask */ | |
599 | FALSE), /* pcrel_offset */ | |
600 | ||
601 | /* GNU extension to record C++ vtable hierarchy */ | |
602 | HOWTO (R_RISCV_GNU_VTINHERIT, /* type */ | |
603 | 0, /* rightshift */ | |
604 | 4, /* size */ | |
605 | 0, /* bitsize */ | |
606 | FALSE, /* pc_relative */ | |
607 | 0, /* bitpos */ | |
608 | complain_overflow_dont, /* complain_on_overflow */ | |
609 | NULL, /* special_function */ | |
610 | "R_RISCV_GNU_VTINHERIT", /* name */ | |
611 | FALSE, /* partial_inplace */ | |
612 | 0, /* src_mask */ | |
613 | 0, /* dst_mask */ | |
614 | FALSE), /* pcrel_offset */ | |
615 | ||
616 | /* GNU extension to record C++ vtable member usage */ | |
617 | HOWTO (R_RISCV_GNU_VTENTRY, /* type */ | |
618 | 0, /* rightshift */ | |
619 | 4, /* size */ | |
620 | 0, /* bitsize */ | |
621 | FALSE, /* pc_relative */ | |
622 | 0, /* bitpos */ | |
623 | complain_overflow_dont, /* complain_on_overflow */ | |
624 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
625 | "R_RISCV_GNU_VTENTRY", /* name */ | |
626 | FALSE, /* partial_inplace */ | |
627 | 0, /* src_mask */ | |
628 | 0, /* dst_mask */ | |
629 | FALSE), /* pcrel_offset */ | |
630 | ||
631 | /* Indicates an alignment statement. The addend field encodes how many | |
632 | bytes of NOPs follow the statement. The desired alignment is the | |
633 | addend rounded up to the next power of two. */ | |
634 | HOWTO (R_RISCV_ALIGN, /* type */ | |
635 | 0, /* rightshift */ | |
636 | 2, /* size */ | |
637 | 0, /* bitsize */ | |
638 | FALSE, /* pc_relative */ | |
639 | 0, /* bitpos */ | |
640 | complain_overflow_dont, /* complain_on_overflow */ | |
641 | bfd_elf_generic_reloc, /* special_function */ | |
642 | "R_RISCV_ALIGN", /* name */ | |
643 | FALSE, /* partial_inplace */ | |
644 | 0, /* src_mask */ | |
645 | 0, /* dst_mask */ | |
646 | TRUE), /* pcrel_offset */ | |
647 | ||
648 | /* 8-bit PC-relative branch offset. */ | |
649 | HOWTO (R_RISCV_RVC_BRANCH, /* type */ | |
650 | 0, /* rightshift */ | |
651 | 2, /* size */ | |
652 | 32, /* bitsize */ | |
653 | TRUE, /* pc_relative */ | |
654 | 0, /* bitpos */ | |
655 | complain_overflow_signed, /* complain_on_overflow */ | |
656 | bfd_elf_generic_reloc, /* special_function */ | |
657 | "R_RISCV_RVC_BRANCH", /* name */ | |
658 | FALSE, /* partial_inplace */ | |
659 | 0, /* src_mask */ | |
660 | ENCODE_RVC_B_IMM (-1U), /* dst_mask */ | |
661 | TRUE), /* pcrel_offset */ | |
662 | ||
663 | /* 11-bit PC-relative jump offset. */ | |
664 | HOWTO (R_RISCV_RVC_JUMP, /* type */ | |
665 | 0, /* rightshift */ | |
666 | 2, /* size */ | |
667 | 32, /* bitsize */ | |
668 | TRUE, /* pc_relative */ | |
669 | 0, /* bitpos */ | |
670 | complain_overflow_dont, /* complain_on_overflow */ | |
e23eba97 NC |
671 | bfd_elf_generic_reloc, /* special_function */ |
672 | "R_RISCV_RVC_JUMP", /* name */ | |
673 | FALSE, /* partial_inplace */ | |
674 | 0, /* src_mask */ | |
675 | ENCODE_RVC_J_IMM (-1U), /* dst_mask */ | |
676 | TRUE), /* pcrel_offset */ | |
677 | ||
678 | /* High 6 bits of 18-bit absolute address. */ | |
679 | HOWTO (R_RISCV_RVC_LUI, /* type */ | |
680 | 0, /* rightshift */ | |
681 | 2, /* size */ | |
682 | 32, /* bitsize */ | |
683 | FALSE, /* pc_relative */ | |
684 | 0, /* bitpos */ | |
685 | complain_overflow_dont, /* complain_on_overflow */ | |
686 | bfd_elf_generic_reloc, /* special_function */ | |
687 | "R_RISCV_RVC_LUI", /* name */ | |
688 | FALSE, /* partial_inplace */ | |
689 | 0, /* src_mask */ | |
690 | ENCODE_RVC_IMM (-1U), /* dst_mask */ | |
691 | FALSE), /* pcrel_offset */ | |
692 | ||
1d65abb5 | 693 | /* GP-relative load. */ |
e23eba97 NC |
694 | HOWTO (R_RISCV_GPREL_I, /* type */ |
695 | 0, /* rightshift */ | |
696 | 2, /* size */ | |
697 | 32, /* bitsize */ | |
698 | FALSE, /* pc_relative */ | |
699 | 0, /* bitpos */ | |
700 | complain_overflow_dont, /* complain_on_overflow */ | |
701 | bfd_elf_generic_reloc, /* special_function */ | |
702 | "R_RISCV_GPREL_I", /* name */ | |
703 | FALSE, /* partial_inplace */ | |
704 | 0, /* src_mask */ | |
705 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
706 | FALSE), /* pcrel_offset */ | |
707 | ||
1d65abb5 | 708 | /* GP-relative store. */ |
e23eba97 NC |
709 | HOWTO (R_RISCV_GPREL_S, /* type */ |
710 | 0, /* rightshift */ | |
711 | 2, /* size */ | |
712 | 32, /* bitsize */ | |
713 | FALSE, /* pc_relative */ | |
714 | 0, /* bitpos */ | |
715 | complain_overflow_dont, /* complain_on_overflow */ | |
716 | bfd_elf_generic_reloc, /* special_function */ | |
717 | "R_RISCV_GPREL_S", /* name */ | |
718 | FALSE, /* partial_inplace */ | |
719 | 0, /* src_mask */ | |
720 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
721 | FALSE), /* pcrel_offset */ | |
45f76423 AW |
722 | |
723 | /* TP-relative TLS LE load. */ | |
724 | HOWTO (R_RISCV_TPREL_I, /* type */ | |
725 | 0, /* rightshift */ | |
726 | 2, /* size */ | |
727 | 32, /* bitsize */ | |
728 | FALSE, /* pc_relative */ | |
729 | 0, /* bitpos */ | |
730 | complain_overflow_signed, /* complain_on_overflow */ | |
731 | bfd_elf_generic_reloc, /* special_function */ | |
732 | "R_RISCV_TPREL_I", /* name */ | |
733 | FALSE, /* partial_inplace */ | |
734 | 0, /* src_mask */ | |
735 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
736 | FALSE), /* pcrel_offset */ | |
737 | ||
738 | /* TP-relative TLS LE store. */ | |
739 | HOWTO (R_RISCV_TPREL_S, /* type */ | |
740 | 0, /* rightshift */ | |
741 | 2, /* size */ | |
742 | 32, /* bitsize */ | |
743 | FALSE, /* pc_relative */ | |
744 | 0, /* bitpos */ | |
745 | complain_overflow_signed, /* complain_on_overflow */ | |
746 | bfd_elf_generic_reloc, /* special_function */ | |
747 | "R_RISCV_TPREL_S", /* name */ | |
748 | FALSE, /* partial_inplace */ | |
749 | 0, /* src_mask */ | |
750 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
751 | FALSE), /* pcrel_offset */ | |
752 | ||
753 | /* The paired relocation may be relaxed. */ | |
754 | HOWTO (R_RISCV_RELAX, /* type */ | |
755 | 0, /* rightshift */ | |
756 | 3, /* size */ | |
757 | 0, /* bitsize */ | |
758 | FALSE, /* pc_relative */ | |
759 | 0, /* bitpos */ | |
760 | complain_overflow_dont, /* complain_on_overflow */ | |
761 | bfd_elf_generic_reloc, /* special_function */ | |
762 | "R_RISCV_RELAX", /* name */ | |
763 | FALSE, /* partial_inplace */ | |
764 | 0, /* src_mask */ | |
765 | 0, /* dst_mask */ | |
766 | FALSE), /* pcrel_offset */ | |
767 | ||
768 | /* 6-bit in-place addition, for local label subtraction. */ | |
769 | HOWTO (R_RISCV_SUB6, /* type */ | |
770 | 0, /* rightshift */ | |
771 | 0, /* size */ | |
772 | 8, /* bitsize */ | |
773 | FALSE, /* pc_relative */ | |
774 | 0, /* bitpos */ | |
775 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 776 | riscv_elf_add_sub_reloc, /* special_function */ |
45f76423 AW |
777 | "R_RISCV_SUB6", /* name */ |
778 | FALSE, /* partial_inplace */ | |
779 | 0, /* src_mask */ | |
780 | 0x3f, /* dst_mask */ | |
781 | FALSE), /* pcrel_offset */ | |
782 | ||
783 | /* 6-bit in-place setting, for local label subtraction. */ | |
784 | HOWTO (R_RISCV_SET6, /* type */ | |
785 | 0, /* rightshift */ | |
786 | 0, /* size */ | |
787 | 8, /* bitsize */ | |
788 | FALSE, /* pc_relative */ | |
789 | 0, /* bitpos */ | |
790 | complain_overflow_dont, /* complain_on_overflow */ | |
791 | bfd_elf_generic_reloc, /* special_function */ | |
792 | "R_RISCV_SET6", /* name */ | |
793 | FALSE, /* partial_inplace */ | |
794 | 0, /* src_mask */ | |
795 | 0x3f, /* dst_mask */ | |
796 | FALSE), /* pcrel_offset */ | |
797 | ||
798 | /* 8-bit in-place setting, for local label subtraction. */ | |
799 | HOWTO (R_RISCV_SET8, /* type */ | |
800 | 0, /* rightshift */ | |
801 | 0, /* size */ | |
802 | 8, /* bitsize */ | |
803 | FALSE, /* pc_relative */ | |
804 | 0, /* bitpos */ | |
805 | complain_overflow_dont, /* complain_on_overflow */ | |
806 | bfd_elf_generic_reloc, /* special_function */ | |
807 | "R_RISCV_SET8", /* name */ | |
808 | FALSE, /* partial_inplace */ | |
809 | 0, /* src_mask */ | |
810 | MINUS_ONE, /* dst_mask */ | |
811 | FALSE), /* pcrel_offset */ | |
812 | ||
813 | /* 16-bit in-place setting, for local label subtraction. */ | |
814 | HOWTO (R_RISCV_SET16, /* type */ | |
815 | 0, /* rightshift */ | |
816 | 1, /* size */ | |
817 | 16, /* bitsize */ | |
818 | FALSE, /* pc_relative */ | |
819 | 0, /* bitpos */ | |
820 | complain_overflow_dont, /* complain_on_overflow */ | |
821 | bfd_elf_generic_reloc, /* special_function */ | |
822 | "R_RISCV_SET16", /* name */ | |
823 | FALSE, /* partial_inplace */ | |
824 | 0, /* src_mask */ | |
825 | MINUS_ONE, /* dst_mask */ | |
826 | FALSE), /* pcrel_offset */ | |
827 | ||
828 | /* 32-bit in-place setting, for local label subtraction. */ | |
829 | HOWTO (R_RISCV_SET32, /* type */ | |
830 | 0, /* rightshift */ | |
831 | 2, /* size */ | |
832 | 32, /* bitsize */ | |
833 | FALSE, /* pc_relative */ | |
834 | 0, /* bitpos */ | |
835 | complain_overflow_dont, /* complain_on_overflow */ | |
836 | bfd_elf_generic_reloc, /* special_function */ | |
837 | "R_RISCV_SET32", /* name */ | |
838 | FALSE, /* partial_inplace */ | |
839 | 0, /* src_mask */ | |
840 | MINUS_ONE, /* dst_mask */ | |
841 | FALSE), /* pcrel_offset */ | |
a6cbf936 KLC |
842 | |
843 | /* 32-bit PC relative. */ | |
844 | HOWTO (R_RISCV_32_PCREL, /* type */ | |
845 | 0, /* rightshift */ | |
846 | 2, /* size */ | |
847 | 32, /* bitsize */ | |
848 | TRUE, /* pc_relative */ | |
849 | 0, /* bitpos */ | |
850 | complain_overflow_dont, /* complain_on_overflow */ | |
851 | bfd_elf_generic_reloc, /* special_function */ | |
852 | "R_RISCV_32_PCREL", /* name */ | |
853 | FALSE, /* partial_inplace */ | |
854 | 0, /* src_mask */ | |
855 | MINUS_ONE, /* dst_mask */ | |
856 | FALSE), /* pcrel_offset */ | |
e23eba97 NC |
857 | }; |
858 | ||
859 | /* A mapping from BFD reloc types to RISC-V ELF reloc types. */ | |
860 | ||
861 | struct elf_reloc_map | |
862 | { | |
863 | bfd_reloc_code_real_type bfd_val; | |
864 | enum elf_riscv_reloc_type elf_val; | |
865 | }; | |
866 | ||
867 | static const struct elf_reloc_map riscv_reloc_map[] = | |
868 | { | |
869 | { BFD_RELOC_NONE, R_RISCV_NONE }, | |
870 | { BFD_RELOC_32, R_RISCV_32 }, | |
871 | { BFD_RELOC_64, R_RISCV_64 }, | |
872 | { BFD_RELOC_RISCV_ADD8, R_RISCV_ADD8 }, | |
873 | { BFD_RELOC_RISCV_ADD16, R_RISCV_ADD16 }, | |
874 | { BFD_RELOC_RISCV_ADD32, R_RISCV_ADD32 }, | |
875 | { BFD_RELOC_RISCV_ADD64, R_RISCV_ADD64 }, | |
876 | { BFD_RELOC_RISCV_SUB8, R_RISCV_SUB8 }, | |
877 | { BFD_RELOC_RISCV_SUB16, R_RISCV_SUB16 }, | |
878 | { BFD_RELOC_RISCV_SUB32, R_RISCV_SUB32 }, | |
879 | { BFD_RELOC_RISCV_SUB64, R_RISCV_SUB64 }, | |
880 | { BFD_RELOC_CTOR, R_RISCV_64 }, | |
881 | { BFD_RELOC_12_PCREL, R_RISCV_BRANCH }, | |
882 | { BFD_RELOC_RISCV_HI20, R_RISCV_HI20 }, | |
883 | { BFD_RELOC_RISCV_LO12_I, R_RISCV_LO12_I }, | |
884 | { BFD_RELOC_RISCV_LO12_S, R_RISCV_LO12_S }, | |
885 | { BFD_RELOC_RISCV_PCREL_LO12_I, R_RISCV_PCREL_LO12_I }, | |
886 | { BFD_RELOC_RISCV_PCREL_LO12_S, R_RISCV_PCREL_LO12_S }, | |
887 | { BFD_RELOC_RISCV_CALL, R_RISCV_CALL }, | |
888 | { BFD_RELOC_RISCV_CALL_PLT, R_RISCV_CALL_PLT }, | |
889 | { BFD_RELOC_RISCV_PCREL_HI20, R_RISCV_PCREL_HI20 }, | |
890 | { BFD_RELOC_RISCV_JMP, R_RISCV_JAL }, | |
891 | { BFD_RELOC_RISCV_GOT_HI20, R_RISCV_GOT_HI20 }, | |
892 | { BFD_RELOC_RISCV_TLS_DTPMOD32, R_RISCV_TLS_DTPMOD32 }, | |
893 | { BFD_RELOC_RISCV_TLS_DTPREL32, R_RISCV_TLS_DTPREL32 }, | |
894 | { BFD_RELOC_RISCV_TLS_DTPMOD64, R_RISCV_TLS_DTPMOD64 }, | |
895 | { BFD_RELOC_RISCV_TLS_DTPREL64, R_RISCV_TLS_DTPREL64 }, | |
896 | { BFD_RELOC_RISCV_TLS_TPREL32, R_RISCV_TLS_TPREL32 }, | |
897 | { BFD_RELOC_RISCV_TLS_TPREL64, R_RISCV_TLS_TPREL64 }, | |
898 | { BFD_RELOC_RISCV_TPREL_HI20, R_RISCV_TPREL_HI20 }, | |
899 | { BFD_RELOC_RISCV_TPREL_ADD, R_RISCV_TPREL_ADD }, | |
900 | { BFD_RELOC_RISCV_TPREL_LO12_S, R_RISCV_TPREL_LO12_S }, | |
901 | { BFD_RELOC_RISCV_TPREL_LO12_I, R_RISCV_TPREL_LO12_I }, | |
902 | { BFD_RELOC_RISCV_TLS_GOT_HI20, R_RISCV_TLS_GOT_HI20 }, | |
903 | { BFD_RELOC_RISCV_TLS_GD_HI20, R_RISCV_TLS_GD_HI20 }, | |
904 | { BFD_RELOC_RISCV_ALIGN, R_RISCV_ALIGN }, | |
905 | { BFD_RELOC_RISCV_RVC_BRANCH, R_RISCV_RVC_BRANCH }, | |
906 | { BFD_RELOC_RISCV_RVC_JUMP, R_RISCV_RVC_JUMP }, | |
907 | { BFD_RELOC_RISCV_RVC_LUI, R_RISCV_RVC_LUI }, | |
908 | { BFD_RELOC_RISCV_GPREL_I, R_RISCV_GPREL_I }, | |
909 | { BFD_RELOC_RISCV_GPREL_S, R_RISCV_GPREL_S }, | |
45f76423 AW |
910 | { BFD_RELOC_RISCV_TPREL_I, R_RISCV_TPREL_I }, |
911 | { BFD_RELOC_RISCV_TPREL_S, R_RISCV_TPREL_S }, | |
912 | { BFD_RELOC_RISCV_RELAX, R_RISCV_RELAX }, | |
913 | { BFD_RELOC_RISCV_SUB6, R_RISCV_SUB6 }, | |
914 | { BFD_RELOC_RISCV_SET6, R_RISCV_SET6 }, | |
915 | { BFD_RELOC_RISCV_SET8, R_RISCV_SET8 }, | |
916 | { BFD_RELOC_RISCV_SET16, R_RISCV_SET16 }, | |
917 | { BFD_RELOC_RISCV_SET32, R_RISCV_SET32 }, | |
a6cbf936 | 918 | { BFD_RELOC_RISCV_32_PCREL, R_RISCV_32_PCREL }, |
e23eba97 NC |
919 | }; |
920 | ||
921 | /* Given a BFD reloc type, return a howto structure. */ | |
922 | ||
923 | reloc_howto_type * | |
924 | riscv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
925 | bfd_reloc_code_real_type code) | |
926 | { | |
927 | unsigned int i; | |
928 | ||
929 | for (i = 0; i < ARRAY_SIZE (riscv_reloc_map); i++) | |
930 | if (riscv_reloc_map[i].bfd_val == code) | |
931 | return &howto_table[(int) riscv_reloc_map[i].elf_val]; | |
932 | ||
933 | bfd_set_error (bfd_error_bad_value); | |
934 | return NULL; | |
935 | } | |
936 | ||
937 | reloc_howto_type * | |
938 | riscv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
939 | { | |
940 | unsigned int i; | |
941 | ||
942 | for (i = 0; i < ARRAY_SIZE (howto_table); i++) | |
943 | if (howto_table[i].name && strcasecmp (howto_table[i].name, r_name) == 0) | |
944 | return &howto_table[i]; | |
945 | ||
946 | return NULL; | |
947 | } | |
948 | ||
949 | reloc_howto_type * | |
0aa13fee | 950 | riscv_elf_rtype_to_howto (bfd *abfd, unsigned int r_type) |
e23eba97 NC |
951 | { |
952 | if (r_type >= ARRAY_SIZE (howto_table)) | |
953 | { | |
0aa13fee AM |
954 | (*_bfd_error_handler) (_("%pB: unsupported relocation type %#x"), |
955 | abfd, r_type); | |
e23eba97 NC |
956 | bfd_set_error (bfd_error_bad_value); |
957 | return NULL; | |
958 | } | |
959 | return &howto_table[r_type]; | |
960 | } | |
57593436 KLC |
961 | |
962 | /* Special_function of RISCV_ADD and RISCV_SUB relocations. */ | |
963 | ||
964 | static bfd_reloc_status_type | |
965 | riscv_elf_add_sub_reloc (bfd *abfd, | |
966 | arelent *reloc_entry, | |
967 | asymbol *symbol, | |
968 | void *data, | |
969 | asection *input_section, | |
970 | bfd *output_bfd, | |
971 | char **error_message ATTRIBUTE_UNUSED) | |
972 | { | |
973 | reloc_howto_type *howto = reloc_entry->howto; | |
974 | bfd_vma relocation; | |
975 | ||
976 | if (output_bfd != NULL | |
977 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
978 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
979 | { | |
980 | reloc_entry->address += input_section->output_offset; | |
981 | return bfd_reloc_ok; | |
982 | } | |
983 | ||
984 | if (output_bfd != NULL) | |
985 | return bfd_reloc_continue; | |
986 | ||
987 | relocation = symbol->value + symbol->section->output_section->vma | |
988 | + symbol->section->output_offset + reloc_entry->addend; | |
989 | bfd_vma old_value = bfd_get (howto->bitsize, abfd, | |
990 | data + reloc_entry->address); | |
991 | ||
992 | switch (howto->type) | |
993 | { | |
994 | case R_RISCV_ADD8: | |
995 | case R_RISCV_ADD16: | |
996 | case R_RISCV_ADD32: | |
997 | case R_RISCV_ADD64: | |
998 | relocation = old_value + relocation; | |
999 | break; | |
1000 | case R_RISCV_SUB6: | |
1001 | case R_RISCV_SUB8: | |
1002 | case R_RISCV_SUB16: | |
1003 | case R_RISCV_SUB32: | |
1004 | case R_RISCV_SUB64: | |
1005 | relocation = old_value - relocation; | |
1006 | break; | |
1007 | } | |
1008 | bfd_put (howto->bitsize, abfd, relocation, data + reloc_entry->address); | |
1009 | ||
1010 | return bfd_reloc_ok; | |
1011 | } | |
1080bf78 JW |
1012 | |
1013 | /* Parsing subset version. | |
1014 | ||
1015 | Return Value: | |
1016 | Points to the end of version | |
1017 | ||
1018 | Arguments: | |
1019 | `rps`: Hooks and status for parsing subset. | |
1020 | `march`: Full arch string. | |
1021 | `p`: Curent parsing position. | |
1022 | `major_version`: Parsing result of major version, using | |
1023 | default_major_version if version is not present in arch string. | |
1024 | `minor_version`: Parsing result of minor version, set to 0 if version is | |
1025 | not present in arch string, but set to `default_minor_version` if | |
1026 | `major_version` using default_major_version. | |
8f595e9b NC |
1027 | `std_ext_p`: True if parsing std extension. |
1028 | `use_default_version`: Set it to True if we need the default version. */ | |
1080bf78 JW |
1029 | |
1030 | static const char * | |
1031 | riscv_parsing_subset_version (riscv_parse_subset_t *rps, | |
1032 | const char *march, | |
1033 | const char *p, | |
1034 | unsigned *major_version, | |
1035 | unsigned *minor_version, | |
8f595e9b NC |
1036 | bfd_boolean std_ext_p, |
1037 | bfd_boolean *use_default_version) | |
1080bf78 JW |
1038 | { |
1039 | bfd_boolean major_p = TRUE; | |
1040 | unsigned version = 0; | |
1080bf78 JW |
1041 | char np; |
1042 | ||
8f595e9b NC |
1043 | *major_version = 0; |
1044 | *minor_version = 0; | |
1045 | for (; *p; ++p) | |
1080bf78 JW |
1046 | { |
1047 | if (*p == 'p') | |
1048 | { | |
1049 | np = *(p + 1); | |
1050 | ||
1051 | if (!ISDIGIT (np)) | |
1052 | { | |
1053 | /* Might be beginning of `p` extension. */ | |
1054 | if (std_ext_p) | |
1055 | { | |
1056 | *major_version = version; | |
1057 | *minor_version = 0; | |
1058 | return p; | |
1059 | } | |
1060 | else | |
1061 | { | |
8f595e9b NC |
1062 | rps->error_handler |
1063 | (_("-march=%s: Expect number after `%dp'."), | |
1064 | march, version); | |
1080bf78 JW |
1065 | return NULL; |
1066 | } | |
1067 | } | |
1068 | ||
8f595e9b | 1069 | *major_version = version; |
1080bf78 JW |
1070 | major_p = FALSE; |
1071 | version = 0; | |
1072 | } | |
1073 | else if (ISDIGIT (*p)) | |
1074 | version = (version * 10) + (*p - '0'); | |
1075 | else | |
1076 | break; | |
1077 | } | |
1078 | ||
1079 | if (major_p) | |
8f595e9b | 1080 | *major_version = version; |
1080bf78 | 1081 | else |
8f595e9b | 1082 | *minor_version = version; |
1080bf78 | 1083 | |
8f595e9b NC |
1084 | /* We can not find any version in string, need to parse default version. */ |
1085 | if (use_default_version != NULL | |
1086 | && *major_version == 0 | |
1087 | && *minor_version == 0) | |
1088 | *use_default_version = TRUE; | |
1080bf78 JW |
1089 | return p; |
1090 | } | |
1091 | ||
1092 | /* Return string which contain all supported standard extensions in | |
1093 | canonical order. */ | |
1094 | ||
1095 | const char * | |
1096 | riscv_supported_std_ext (void) | |
1097 | { | |
1098 | return "mafdqlcbjtpvn"; | |
1099 | } | |
1100 | ||
1101 | /* Parsing function for standard extensions. | |
1102 | ||
1103 | Return Value: | |
1104 | Points to the end of extensions. | |
1105 | ||
1106 | Arguments: | |
1107 | `rps`: Hooks and status for parsing subset. | |
1108 | `march`: Full arch string. | |
1109 | `p`: Curent parsing position. */ | |
1110 | ||
1111 | static const char * | |
1112 | riscv_parse_std_ext (riscv_parse_subset_t *rps, | |
8f595e9b NC |
1113 | const char *march, |
1114 | const char *p) | |
1080bf78 JW |
1115 | { |
1116 | const char *all_std_exts = riscv_supported_std_ext (); | |
1117 | const char *std_exts = all_std_exts; | |
1080bf78 JW |
1118 | unsigned major_version = 0; |
1119 | unsigned minor_version = 0; | |
1120 | char std_ext = '\0'; | |
8f595e9b | 1121 | bfd_boolean use_default_version = FALSE; |
1080bf78 JW |
1122 | |
1123 | /* First letter must start with i, e or g. */ | |
1124 | switch (*p) | |
1125 | { | |
1126 | case 'i': | |
8f595e9b NC |
1127 | p = riscv_parsing_subset_version (rps, |
1128 | march, | |
1129 | ++p, | |
1130 | &major_version, | |
1131 | &minor_version, | |
1132 | /* std_ext_p= */TRUE, | |
1133 | &use_default_version); | |
1134 | ||
1135 | /* Find the default version if needed. */ | |
1136 | if (use_default_version | |
1137 | && rps->get_default_version != NULL) | |
1138 | rps->get_default_version ("i", | |
1139 | &major_version, | |
1140 | &minor_version); | |
1141 | riscv_add_subset (rps->subset_list, "i", | |
1142 | major_version, minor_version); | |
1080bf78 JW |
1143 | break; |
1144 | ||
1145 | case 'e': | |
8f595e9b NC |
1146 | p = riscv_parsing_subset_version (rps, |
1147 | march, | |
1148 | ++p, | |
1149 | &major_version, | |
1150 | &minor_version, | |
1151 | /* std_ext_p= */TRUE, | |
1152 | &use_default_version); | |
1153 | ||
1154 | /* Find the default version if needed. */ | |
1155 | if (use_default_version | |
1156 | && rps->get_default_version != NULL) | |
1157 | rps->get_default_version ("e", | |
1158 | &major_version, | |
1159 | &minor_version); | |
1160 | riscv_add_subset (rps->subset_list, "e", | |
1161 | major_version, minor_version); | |
1162 | ||
1163 | /* i-ext must be enabled. */ | |
1164 | if (rps->get_default_version != NULL) | |
1165 | rps->get_default_version ("i", | |
1166 | &major_version, | |
1167 | &minor_version); | |
1168 | riscv_add_subset (rps->subset_list, "i", | |
1169 | major_version, minor_version); | |
1080bf78 JW |
1170 | |
1171 | if (*rps->xlen > 32) | |
1172 | { | |
8f595e9b NC |
1173 | rps->error_handler |
1174 | (_("-march=%s: rv%de is not a valid base ISA"), | |
1175 | march, *rps->xlen); | |
1080bf78 JW |
1176 | return NULL; |
1177 | } | |
1080bf78 JW |
1178 | break; |
1179 | ||
1180 | case 'g': | |
8f595e9b NC |
1181 | /* The g-ext shouldn't has the version, so we just |
1182 | skip the setting if user set a version to it. */ | |
1183 | p = riscv_parsing_subset_version (rps, | |
1184 | march, | |
1185 | ++p, | |
1186 | &major_version, | |
1187 | &minor_version, | |
1188 | TRUE, | |
1189 | &use_default_version); | |
1190 | ||
1191 | /* i-ext must be enabled. */ | |
1192 | if (rps->get_default_version != NULL) | |
1193 | rps->get_default_version ("i", | |
1194 | &major_version, | |
1195 | &minor_version); | |
1196 | riscv_add_subset (rps->subset_list, "i", | |
1197 | major_version, minor_version); | |
1080bf78 JW |
1198 | |
1199 | for ( ; *std_exts != 'q'; std_exts++) | |
1200 | { | |
1201 | const char subset[] = {*std_exts, '\0'}; | |
8f595e9b NC |
1202 | |
1203 | if (rps->get_default_version != NULL) | |
1204 | rps->get_default_version (subset, | |
1205 | &major_version, | |
1206 | &minor_version); | |
1207 | riscv_add_subset (rps->subset_list, subset, | |
1208 | major_version, minor_version); | |
1080bf78 JW |
1209 | } |
1210 | break; | |
1211 | ||
1212 | default: | |
8f595e9b NC |
1213 | rps->error_handler |
1214 | (_("-march=%s: first ISA subset must be `e', `i' or `g'"), march); | |
1080bf78 JW |
1215 | return NULL; |
1216 | } | |
1217 | ||
8f595e9b NC |
1218 | /* The riscv_parsing_subset_version may set `p` to NULL, so I think we should |
1219 | skip parsing the string if `p` is NULL or value of `p` is `\0`. */ | |
1220 | while (p != NULL && *p != '\0') | |
1080bf78 JW |
1221 | { |
1222 | char subset[2] = {0, 0}; | |
1223 | ||
403d1bd9 | 1224 | if (*p == 'x' || *p == 's' || *p == 'z') |
1080bf78 JW |
1225 | break; |
1226 | ||
1227 | if (*p == '_') | |
1228 | { | |
1229 | p++; | |
1230 | continue; | |
1231 | } | |
1232 | ||
1233 | std_ext = *p; | |
1234 | ||
1235 | /* Checking canonical order. */ | |
1236 | while (*std_exts && std_ext != *std_exts) std_exts++; | |
1237 | ||
1238 | if (std_ext != *std_exts) | |
1239 | { | |
1240 | if (strchr (all_std_exts, std_ext) == NULL) | |
8f595e9b NC |
1241 | rps->error_handler |
1242 | (_("-march=%s: unsupported ISA subset `%c'"), march, *p); | |
1080bf78 | 1243 | else |
8f595e9b NC |
1244 | rps->error_handler |
1245 | (_("-march=%s: ISA string is not in canonical order. `%c'"), | |
1246 | march, *p); | |
1080bf78 JW |
1247 | return NULL; |
1248 | } | |
1249 | ||
1250 | std_exts++; | |
1251 | ||
8f595e9b | 1252 | use_default_version = FALSE; |
1080bf78 | 1253 | subset[0] = std_ext; |
8f595e9b NC |
1254 | p = riscv_parsing_subset_version (rps, |
1255 | march, | |
1256 | ++p, | |
1257 | &major_version, | |
1258 | &minor_version, | |
1259 | TRUE, | |
1260 | &use_default_version); | |
1261 | ||
1262 | /* Find the default version if needed. */ | |
1263 | if (use_default_version | |
1264 | && rps->get_default_version != NULL) | |
1265 | rps->get_default_version (subset, | |
1266 | &major_version, | |
1267 | &minor_version); | |
1268 | riscv_add_subset (rps->subset_list, subset, | |
1269 | major_version, minor_version); | |
1080bf78 JW |
1270 | } |
1271 | return p; | |
1272 | } | |
1273 | ||
403d1bd9 | 1274 | /* Classify the argument 'arch' into one of riscv_isa_ext_class_t. */ |
1080bf78 | 1275 | |
403d1bd9 JW |
1276 | riscv_isa_ext_class_t |
1277 | riscv_get_prefix_class (const char *arch) | |
1278 | { | |
1279 | switch (*arch) | |
1280 | { | |
b5f998b2 | 1281 | case 's': return RV_ISA_CLASS_S; |
403d1bd9 JW |
1282 | case 'x': return RV_ISA_CLASS_X; |
1283 | case 'z': return RV_ISA_CLASS_Z; | |
1284 | default: return RV_ISA_CLASS_UNKNOWN; | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | /* Structure describing parameters to use when parsing a particular | |
1289 | riscv_isa_ext_class_t. One of these should be provided for each | |
1290 | possible class, except RV_ISA_CLASS_UNKNOWN. */ | |
1291 | ||
1292 | typedef struct riscv_parse_config | |
1293 | { | |
1294 | /* Class of the extension. */ | |
1295 | riscv_isa_ext_class_t class; | |
1296 | ||
1297 | /* Lower-case prefix string for error printing | |
1298 | and internal parser usage, e.g. "z", "x". */ | |
1299 | const char *prefix; | |
1300 | ||
1301 | /* Predicate which is used for checking whether | |
1302 | this is a "known" extension. For 'x', | |
1303 | it always returns true (since they are by | |
1304 | definition non-standard and cannot be known. */ | |
1305 | bfd_boolean (*ext_valid_p) (const char *); | |
1306 | } riscv_parse_config_t; | |
1307 | ||
1308 | /* Parse a generic prefixed extension. | |
8f595e9b NC |
1309 | `rps`: Hooks and status for parsing subset. |
1310 | `march`: The full architecture string as passed in by "-march=...". | |
1311 | `p`: Point from which to start parsing the -march string. | |
1312 | `config`: What class of extensions to parse, predicate funcs, | |
403d1bd9 | 1313 | and strings to use in error reporting. */ |
1080bf78 JW |
1314 | |
1315 | static const char * | |
403d1bd9 JW |
1316 | riscv_parse_prefixed_ext (riscv_parse_subset_t *rps, |
1317 | const char *march, | |
1318 | const char *p, | |
1319 | const riscv_parse_config_t *config) | |
1080bf78 JW |
1320 | { |
1321 | unsigned major_version = 0; | |
1322 | unsigned minor_version = 0; | |
403d1bd9 JW |
1323 | const char *last_name; |
1324 | riscv_isa_ext_class_t class; | |
8f595e9b | 1325 | bfd_boolean use_default_version; |
1080bf78 JW |
1326 | |
1327 | while (*p) | |
1328 | { | |
1329 | if (*p == '_') | |
1330 | { | |
1331 | p++; | |
1332 | continue; | |
1333 | } | |
1334 | ||
403d1bd9 JW |
1335 | /* Assert that the current extension specifier matches our parsing |
1336 | class. */ | |
1337 | class = riscv_get_prefix_class (p); | |
1338 | if (class != config->class) | |
1080bf78 JW |
1339 | break; |
1340 | ||
1341 | char *subset = xstrdup (p); | |
1342 | char *q = subset; | |
1343 | const char *end_of_version; | |
1344 | ||
1345 | while (*++q != '\0' && *q != '_' && !ISDIGIT (*q)) | |
1346 | ; | |
1347 | ||
8f595e9b | 1348 | use_default_version = FALSE; |
1080bf78 | 1349 | end_of_version = |
8f595e9b NC |
1350 | riscv_parsing_subset_version (rps, march, q, &major_version, |
1351 | &minor_version, FALSE, | |
1352 | &use_default_version); | |
1080bf78 JW |
1353 | *q = '\0'; |
1354 | ||
403d1bd9 JW |
1355 | /* Check that the name is valid. |
1356 | For 'x', anything goes but it cannot simply be 'x'. | |
b5f998b2 JW |
1357 | For 's', it must be known from a list and cannot simply be 's'. |
1358 | For 'z', it must be known from a list and cannot simply be 'z'. */ | |
403d1bd9 JW |
1359 | |
1360 | /* Check that the extension name is well-formed. */ | |
1361 | if (!config->ext_valid_p (subset)) | |
1362 | { | |
1363 | rps->error_handler | |
8f595e9b | 1364 | (_("-march=%s: Invalid or unknown %s ISA extension: '%s'"), |
403d1bd9 JW |
1365 | march, config->prefix, subset); |
1366 | free (subset); | |
1367 | return NULL; | |
1368 | } | |
1369 | ||
1370 | /* Check that the last item is not the same as this. */ | |
1371 | last_name = rps->subset_list->tail->name; | |
403d1bd9 JW |
1372 | if (!strcasecmp (last_name, subset)) |
1373 | { | |
8f595e9b NC |
1374 | rps->error_handler |
1375 | (_("-march=%s: Duplicate %s ISA extension: \'%s\'"), | |
1376 | march, config->prefix, subset); | |
403d1bd9 JW |
1377 | free (subset); |
1378 | return NULL; | |
1379 | } | |
1380 | ||
1381 | /* Check that we are in alphabetical order within the subset. */ | |
1382 | if (!strncasecmp (last_name, config->prefix, 1) | |
1383 | && strcasecmp (last_name, subset) > 0) | |
1384 | { | |
8f595e9b NC |
1385 | rps->error_handler |
1386 | (_("\ | |
1387 | -march=%s: %s ISA extension not in alphabetical order: \'%s\' must come before \'%s\'."), | |
1388 | march, config->prefix, subset, last_name); | |
403d1bd9 JW |
1389 | free (subset); |
1390 | return NULL; | |
1391 | } | |
1392 | ||
8f595e9b NC |
1393 | /* Find the default version if needed. */ |
1394 | if (use_default_version | |
1395 | && rps->get_default_version != NULL) | |
1396 | rps->get_default_version (subset, | |
1397 | &major_version, | |
1398 | &minor_version); | |
1399 | riscv_add_subset (rps->subset_list, subset, | |
1400 | major_version, minor_version); | |
1401 | ||
1080bf78 JW |
1402 | free (subset); |
1403 | p += end_of_version - subset; | |
1404 | ||
1405 | if (*p != '\0' && *p != '_') | |
1406 | { | |
8f595e9b | 1407 | rps->error_handler (_("-march=%s: %s must separate with _"), |
403d1bd9 | 1408 | march, config->prefix); |
1080bf78 JW |
1409 | return NULL; |
1410 | } | |
1411 | } | |
1412 | ||
1413 | return p; | |
1414 | } | |
1415 | ||
403d1bd9 JW |
1416 | /* List of Z-class extensions that binutils should know about. |
1417 | Whether or not a particular entry is in this list will | |
1418 | dictate if gas/ld will accept its presence in the -march | |
1419 | string. | |
1420 | ||
1421 | Example: To add an extension called "Zbb" (bitmanip base extension), | |
1422 | add "zbb" string to the list (all lowercase). | |
1423 | ||
1424 | Keep this list alphabetically ordered. */ | |
1425 | ||
1426 | static const char * const riscv_std_z_ext_strtab[] = | |
1427 | { | |
8f595e9b | 1428 | "zicsr", NULL |
403d1bd9 JW |
1429 | }; |
1430 | ||
1431 | /* Same as `riscv_std_z_ext_strtab', but for S-class extensions. */ | |
1432 | ||
1433 | static const char * const riscv_std_s_ext_strtab[] = | |
1434 | { | |
1435 | NULL | |
1436 | }; | |
1437 | ||
1438 | /* For the extension EXT, search through the list of known extensions | |
1439 | KNOWN_EXTS for a match, and return TRUE if found. */ | |
1440 | ||
1441 | static bfd_boolean | |
1442 | riscv_multi_letter_ext_valid_p (const char *ext, | |
1443 | const char *const *known_exts) | |
1444 | { | |
2d0e1217 AM |
1445 | size_t i; |
1446 | ||
1447 | for (i = 0; known_exts[i]; ++i) | |
1448 | if (!strcmp (ext, known_exts[i])) | |
1449 | return TRUE; | |
403d1bd9 JW |
1450 | |
1451 | return FALSE; | |
1452 | } | |
1453 | ||
1454 | /* Predicator function for x-prefixed extensions. | |
1455 | Anything goes, except the literal 'x'. */ | |
1456 | ||
1457 | static bfd_boolean | |
1458 | riscv_ext_x_valid_p (const char *arg) | |
1459 | { | |
1460 | if (!strcasecmp (arg, "x")) | |
1461 | return FALSE; | |
1462 | ||
1463 | return TRUE; | |
1464 | } | |
1465 | ||
1466 | /* Predicator functions for z-prefixed extensions. | |
1467 | Only known z-extensions are permitted. */ | |
1468 | ||
1469 | static bfd_boolean | |
1470 | riscv_ext_z_valid_p (const char *arg) | |
1471 | { | |
1472 | return riscv_multi_letter_ext_valid_p (arg, riscv_std_z_ext_strtab); | |
1473 | } | |
1474 | ||
1475 | /* Predicator function for 's' prefixed extensions. | |
1476 | Must be either literal 's', or a known s-prefixed extension. */ | |
1477 | ||
1478 | static bfd_boolean | |
1479 | riscv_ext_s_valid_p (const char *arg) | |
1480 | { | |
1481 | return riscv_multi_letter_ext_valid_p (arg, riscv_std_s_ext_strtab); | |
1482 | } | |
1483 | ||
1484 | /* Parsing order that is specified by the ISA manual. */ | |
1485 | ||
1486 | static const riscv_parse_config_t parse_config[] = | |
1487 | { | |
1488 | {RV_ISA_CLASS_S, "s", riscv_ext_s_valid_p}, | |
1489 | {RV_ISA_CLASS_Z, "z", riscv_ext_z_valid_p}, | |
1490 | {RV_ISA_CLASS_X, "x", riscv_ext_x_valid_p}, | |
1491 | {RV_ISA_CLASS_UNKNOWN, NULL, NULL} | |
1492 | }; | |
1493 | ||
1080bf78 JW |
1494 | /* Function for parsing arch string. |
1495 | ||
1496 | Return Value: | |
1497 | Return TRUE on success. | |
1498 | ||
1499 | Arguments: | |
1500 | `rps`: Hooks and status for parsing subset. | |
1501 | `arch`: Arch string. */ | |
1502 | ||
1503 | bfd_boolean | |
1504 | riscv_parse_subset (riscv_parse_subset_t *rps, | |
1505 | const char *arch) | |
1506 | { | |
1507 | const char *p = arch; | |
effc14f5 | 1508 | size_t i; |
1080bf78 JW |
1509 | |
1510 | if (strncmp (p, "rv32", 4) == 0) | |
1511 | { | |
1512 | *rps->xlen = 32; | |
1513 | p += 4; | |
1514 | } | |
1515 | else if (strncmp (p, "rv64", 4) == 0) | |
1516 | { | |
1517 | *rps->xlen = 64; | |
1518 | p += 4; | |
1519 | } | |
1520 | else | |
1521 | { | |
8f595e9b NC |
1522 | rps->error_handler |
1523 | (_("-march=%s: ISA string must begin with rv32 or rv64"), | |
1524 | arch); | |
1080bf78 JW |
1525 | return FALSE; |
1526 | } | |
1527 | ||
1528 | /* Parsing standard extension. */ | |
1529 | p = riscv_parse_std_ext (rps, arch, p); | |
1530 | ||
1531 | if (p == NULL) | |
1532 | return FALSE; | |
1533 | ||
403d1bd9 | 1534 | /* Parse the different classes of extensions in the specified order. */ |
effc14f5 | 1535 | for (i = 0; i < ARRAY_SIZE (parse_config); ++i) { |
403d1bd9 | 1536 | p = riscv_parse_prefixed_ext (rps, arch, p, &parse_config[i]); |
1080bf78 | 1537 | |
403d1bd9 JW |
1538 | if (p == NULL) |
1539 | return FALSE; | |
1540 | } | |
1080bf78 JW |
1541 | |
1542 | if (*p != '\0') | |
1543 | { | |
8f595e9b | 1544 | rps->error_handler (_("-march=%s: unexpected ISA string at end: %s"), |
1080bf78 JW |
1545 | arch, p); |
1546 | return FALSE; | |
1547 | } | |
1548 | ||
1549 | if (riscv_lookup_subset (rps->subset_list, "e") | |
1550 | && riscv_lookup_subset (rps->subset_list, "f")) | |
1551 | { | |
8f595e9b NC |
1552 | rps->error_handler |
1553 | (_("-march=%s: rv32e does not support the `f' extension"), | |
1554 | arch); | |
1080bf78 JW |
1555 | return FALSE; |
1556 | } | |
1557 | ||
1558 | if (riscv_lookup_subset (rps->subset_list, "d") | |
1559 | && !riscv_lookup_subset (rps->subset_list, "f")) | |
1560 | { | |
8f595e9b NC |
1561 | rps->error_handler |
1562 | (_("-march=%s: `d' extension requires `f' extension"), | |
1563 | arch); | |
1080bf78 JW |
1564 | return FALSE; |
1565 | } | |
1566 | ||
1567 | if (riscv_lookup_subset (rps->subset_list, "q") | |
1568 | && !riscv_lookup_subset (rps->subset_list, "d")) | |
1569 | { | |
8f595e9b NC |
1570 | rps->error_handler |
1571 | (_("-march=%s: `q' extension requires `d' extension"), | |
1572 | arch); | |
1080bf78 JW |
1573 | return FALSE; |
1574 | } | |
1575 | ||
1576 | if (riscv_lookup_subset (rps->subset_list, "q") && *rps->xlen < 64) | |
1577 | { | |
8f595e9b NC |
1578 | rps->error_handler |
1579 | (_("-march=%s: rv32 does not support the `q' extension"), | |
1580 | arch); | |
1080bf78 JW |
1581 | return FALSE; |
1582 | } | |
1583 | return TRUE; | |
1584 | } | |
1585 | ||
1586 | /* Add new subset to list. */ | |
1587 | ||
1588 | void | |
1589 | riscv_add_subset (riscv_subset_list_t *subset_list, | |
1590 | const char *subset, | |
8f595e9b NC |
1591 | int major, |
1592 | int minor) | |
1080bf78 JW |
1593 | { |
1594 | riscv_subset_t *s = xmalloc (sizeof *s); | |
1595 | ||
1596 | if (subset_list->head == NULL) | |
1597 | subset_list->head = s; | |
1598 | ||
1599 | s->name = xstrdup (subset); | |
1600 | s->major_version = major; | |
1601 | s->minor_version = minor; | |
1602 | s->next = NULL; | |
1603 | ||
1604 | if (subset_list->tail != NULL) | |
1605 | subset_list->tail->next = s; | |
1606 | ||
1607 | subset_list->tail = s; | |
1608 | } | |
1609 | ||
1610 | /* Find subset in list without version checking, return NULL if not found. */ | |
1611 | ||
1612 | riscv_subset_t * | |
1613 | riscv_lookup_subset (const riscv_subset_list_t *subset_list, | |
1614 | const char *subset) | |
1615 | { | |
8f595e9b NC |
1616 | return riscv_lookup_subset_version |
1617 | (subset_list, subset, | |
1618 | RISCV_DONT_CARE_VERSION, | |
1619 | RISCV_DONT_CARE_VERSION); | |
1080bf78 JW |
1620 | } |
1621 | ||
1622 | /* Find subset in list with version checking, return NULL if not found. */ | |
1623 | ||
1624 | riscv_subset_t * | |
1625 | riscv_lookup_subset_version (const riscv_subset_list_t *subset_list, | |
1626 | const char *subset, | |
1627 | int major, int minor) | |
1628 | { | |
1629 | riscv_subset_t *s; | |
1630 | ||
1631 | for (s = subset_list->head; s != NULL; s = s->next) | |
1632 | if (strcasecmp (s->name, subset) == 0) | |
1633 | { | |
1634 | if ((major != RISCV_DONT_CARE_VERSION) | |
1635 | && (s->major_version != major)) | |
1636 | return NULL; | |
1637 | ||
1638 | if ((minor != RISCV_DONT_CARE_VERSION) | |
1639 | && (s->minor_version != minor)) | |
1640 | return NULL; | |
1641 | ||
1642 | return s; | |
1643 | } | |
1644 | ||
1645 | return NULL; | |
1646 | } | |
1647 | ||
1648 | /* Release subset list. */ | |
1649 | ||
1650 | void | |
1651 | riscv_release_subset_list (riscv_subset_list_t *subset_list) | |
1652 | { | |
1653 | while (subset_list->head != NULL) | |
1654 | { | |
1655 | riscv_subset_t *next = subset_list->head->next; | |
1656 | free ((void *)subset_list->head->name); | |
1657 | free (subset_list->head); | |
1658 | subset_list->head = next; | |
1659 | } | |
1660 | ||
1661 | subset_list->tail = NULL; | |
1662 | } | |
2dc8dd17 JW |
1663 | |
1664 | /* Return the number of digits for the input. */ | |
1665 | ||
8f595e9b | 1666 | size_t |
2dc8dd17 JW |
1667 | riscv_estimate_digit (unsigned num) |
1668 | { | |
1669 | size_t digit = 0; | |
1670 | if (num == 0) | |
1671 | return 1; | |
1672 | ||
1673 | for (digit = 0; num ; num /= 10) | |
1674 | digit++; | |
1675 | ||
1676 | return digit; | |
1677 | } | |
1678 | ||
1679 | /* Auxiliary function to estimate string length of subset list. */ | |
1680 | ||
1681 | static size_t | |
1682 | riscv_estimate_arch_strlen1 (const riscv_subset_t *subset) | |
1683 | { | |
1684 | if (subset == NULL) | |
1685 | return 6; /* For rv32/rv64/rv128 and string terminator. */ | |
1686 | ||
1687 | return riscv_estimate_arch_strlen1 (subset->next) | |
1688 | + strlen (subset->name) | |
1689 | + riscv_estimate_digit (subset->major_version) | |
1690 | + 1 /* For version seperator: 'p'. */ | |
1691 | + riscv_estimate_digit (subset->minor_version) | |
1692 | + 1 /* For underscore. */; | |
1693 | } | |
1694 | ||
1695 | /* Estimate the string length of this subset list. */ | |
1696 | ||
1697 | static size_t | |
1698 | riscv_estimate_arch_strlen (const riscv_subset_list_t *subset_list) | |
1699 | { | |
1700 | return riscv_estimate_arch_strlen1 (subset_list->head); | |
1701 | } | |
1702 | ||
1703 | /* Auxiliary function to convert subset info to string. */ | |
1704 | ||
1705 | static void | |
1706 | riscv_arch_str1 (riscv_subset_t *subset, | |
1707 | char *attr_str, char *buf, size_t bufsz) | |
1708 | { | |
1709 | const char *underline = "_"; | |
1710 | ||
1711 | if (subset == NULL) | |
1712 | return; | |
1713 | ||
1714 | /* No underline between rvXX and i/e. */ | |
1715 | if ((strcasecmp (subset->name, "i") == 0) | |
1716 | || (strcasecmp (subset->name, "e") == 0)) | |
1717 | underline = ""; | |
1718 | ||
1719 | snprintf (buf, bufsz, "%s%s%dp%d", | |
1720 | underline, | |
4b24dd1a AM |
1721 | subset->name, |
1722 | subset->major_version, | |
1723 | subset->minor_version); | |
2dc8dd17 JW |
1724 | |
1725 | strncat (attr_str, buf, bufsz); | |
1726 | ||
1727 | /* Skip 'i' extension after 'e'. */ | |
1728 | if ((strcasecmp (subset->name, "e") == 0) | |
1729 | && subset->next | |
1730 | && (strcasecmp (subset->next->name, "i") == 0)) | |
1731 | riscv_arch_str1 (subset->next->next, attr_str, buf, bufsz); | |
1732 | else | |
1733 | riscv_arch_str1 (subset->next, attr_str, buf, bufsz); | |
1734 | } | |
1735 | ||
1736 | /* Convert subset info to string with explicit version info. */ | |
1737 | ||
1738 | char * | |
1739 | riscv_arch_str (unsigned xlen, const riscv_subset_list_t *subset) | |
1740 | { | |
1741 | size_t arch_str_len = riscv_estimate_arch_strlen (subset); | |
1742 | char *attr_str = xmalloc (arch_str_len); | |
1743 | char *buf = xmalloc (arch_str_len); | |
1744 | ||
1745 | snprintf (attr_str, arch_str_len, "rv%u", xlen); | |
1746 | ||
1747 | riscv_arch_str1 (subset->head, attr_str, buf, arch_str_len); | |
1748 | free (buf); | |
1749 | ||
1750 | return attr_str; | |
1751 | } |