Commit | Line | Data |
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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 */ | |
b1b11e92 | 72 | 0xffffffff, /* 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 */ | |
b1b11e92 | 102 | 0xffffffff, /* 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 */ | |
b1b11e92 | 136 | 2, /* size */ |
e23eba97 NC |
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 */ |
b1b11e92 | 145 | 0xffffffff, /* dst_mask */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 164 | 2, /* size */ |
e23eba97 NC |
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 */ |
b1b11e92 | 173 | 0xffffffff, /* dst_mask */ |
e23eba97 NC |
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 */ |
b1b11e92 | 201 | 0xffffffff, /* dst_mask */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 257 | 4, /* size */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 273 | 4, /* size */ |
e23eba97 NC |
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 */ | |
b1b11e92 AM |
469 | 3, /* size */ |
470 | 0, /* bitsize */ | |
e23eba97 NC |
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 */ | |
b1b11e92 | 476 | FALSE, /* partial_inplace */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 493 | 0xff, /* dst_mask */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 508 | 0xffff, /* dst_mask */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 523 | 0xffffffff, /* dst_mask */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 553 | 0xff, /* dst_mask */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 568 | 0xffff, /* dst_mask */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 583 | 0xffffffff, /* dst_mask */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 636 | 3, /* size */ |
e23eba97 NC |
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 */ | |
b1b11e92 | 646 | FALSE), /* pcrel_offset */ |
e23eba97 NC |
647 | |
648 | /* 8-bit PC-relative branch offset. */ | |
649 | HOWTO (R_RISCV_RVC_BRANCH, /* type */ | |
650 | 0, /* rightshift */ | |
b1b11e92 AM |
651 | 1, /* size */ |
652 | 16, /* bitsize */ | |
e23eba97 NC |
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 */ | |
b1b11e92 AM |
666 | 1, /* size */ |
667 | 16, /* bitsize */ | |
e23eba97 NC |
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 */ | |
b1b11e92 AM |
681 | 1, /* size */ |
682 | 16, /* bitsize */ | |
e23eba97 NC |
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 */ | |
b1b11e92 | 810 | 0xff, /* dst_mask */ |
45f76423 AW |
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 */ | |
b1b11e92 | 825 | 0xffff, /* dst_mask */ |
45f76423 AW |
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 */ | |
b1b11e92 | 840 | 0xffffffff, /* dst_mask */ |
45f76423 | 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 */ | |
02dd9d25 NC |
854 | 0, /* src_mask */ |
855 | 0xffffffff, /* dst_mask */ | |
856 | FALSE), /* pcrel_offset */ | |
857 | ||
858 | /* Relocation against a local ifunc symbol in a shared object. */ | |
859 | HOWTO (R_RISCV_IRELATIVE, /* type */ | |
860 | 0, /* rightshift */ | |
861 | 2, /* size */ | |
862 | 32, /* bitsize */ | |
863 | FALSE, /* pc_relative */ | |
864 | 0, /* bitpos */ | |
865 | complain_overflow_dont, /* complain_on_overflow */ | |
866 | bfd_elf_generic_reloc, /* special_function */ | |
867 | "R_RISCV_IRELATIVE", /* name */ | |
868 | FALSE, /* partial_inplace */ | |
a6cbf936 | 869 | 0, /* src_mask */ |
b1b11e92 | 870 | 0xffffffff, /* dst_mask */ |
a6cbf936 | 871 | FALSE), /* pcrel_offset */ |
e23eba97 NC |
872 | }; |
873 | ||
874 | /* A mapping from BFD reloc types to RISC-V ELF reloc types. */ | |
875 | ||
876 | struct elf_reloc_map | |
877 | { | |
878 | bfd_reloc_code_real_type bfd_val; | |
879 | enum elf_riscv_reloc_type elf_val; | |
880 | }; | |
881 | ||
882 | static const struct elf_reloc_map riscv_reloc_map[] = | |
883 | { | |
884 | { BFD_RELOC_NONE, R_RISCV_NONE }, | |
885 | { BFD_RELOC_32, R_RISCV_32 }, | |
886 | { BFD_RELOC_64, R_RISCV_64 }, | |
887 | { BFD_RELOC_RISCV_ADD8, R_RISCV_ADD8 }, | |
888 | { BFD_RELOC_RISCV_ADD16, R_RISCV_ADD16 }, | |
889 | { BFD_RELOC_RISCV_ADD32, R_RISCV_ADD32 }, | |
890 | { BFD_RELOC_RISCV_ADD64, R_RISCV_ADD64 }, | |
891 | { BFD_RELOC_RISCV_SUB8, R_RISCV_SUB8 }, | |
892 | { BFD_RELOC_RISCV_SUB16, R_RISCV_SUB16 }, | |
893 | { BFD_RELOC_RISCV_SUB32, R_RISCV_SUB32 }, | |
894 | { BFD_RELOC_RISCV_SUB64, R_RISCV_SUB64 }, | |
895 | { BFD_RELOC_CTOR, R_RISCV_64 }, | |
896 | { BFD_RELOC_12_PCREL, R_RISCV_BRANCH }, | |
897 | { BFD_RELOC_RISCV_HI20, R_RISCV_HI20 }, | |
898 | { BFD_RELOC_RISCV_LO12_I, R_RISCV_LO12_I }, | |
899 | { BFD_RELOC_RISCV_LO12_S, R_RISCV_LO12_S }, | |
900 | { BFD_RELOC_RISCV_PCREL_LO12_I, R_RISCV_PCREL_LO12_I }, | |
901 | { BFD_RELOC_RISCV_PCREL_LO12_S, R_RISCV_PCREL_LO12_S }, | |
902 | { BFD_RELOC_RISCV_CALL, R_RISCV_CALL }, | |
903 | { BFD_RELOC_RISCV_CALL_PLT, R_RISCV_CALL_PLT }, | |
904 | { BFD_RELOC_RISCV_PCREL_HI20, R_RISCV_PCREL_HI20 }, | |
905 | { BFD_RELOC_RISCV_JMP, R_RISCV_JAL }, | |
906 | { BFD_RELOC_RISCV_GOT_HI20, R_RISCV_GOT_HI20 }, | |
907 | { BFD_RELOC_RISCV_TLS_DTPMOD32, R_RISCV_TLS_DTPMOD32 }, | |
908 | { BFD_RELOC_RISCV_TLS_DTPREL32, R_RISCV_TLS_DTPREL32 }, | |
909 | { BFD_RELOC_RISCV_TLS_DTPMOD64, R_RISCV_TLS_DTPMOD64 }, | |
910 | { BFD_RELOC_RISCV_TLS_DTPREL64, R_RISCV_TLS_DTPREL64 }, | |
911 | { BFD_RELOC_RISCV_TLS_TPREL32, R_RISCV_TLS_TPREL32 }, | |
912 | { BFD_RELOC_RISCV_TLS_TPREL64, R_RISCV_TLS_TPREL64 }, | |
913 | { BFD_RELOC_RISCV_TPREL_HI20, R_RISCV_TPREL_HI20 }, | |
914 | { BFD_RELOC_RISCV_TPREL_ADD, R_RISCV_TPREL_ADD }, | |
915 | { BFD_RELOC_RISCV_TPREL_LO12_S, R_RISCV_TPREL_LO12_S }, | |
916 | { BFD_RELOC_RISCV_TPREL_LO12_I, R_RISCV_TPREL_LO12_I }, | |
917 | { BFD_RELOC_RISCV_TLS_GOT_HI20, R_RISCV_TLS_GOT_HI20 }, | |
918 | { BFD_RELOC_RISCV_TLS_GD_HI20, R_RISCV_TLS_GD_HI20 }, | |
919 | { BFD_RELOC_RISCV_ALIGN, R_RISCV_ALIGN }, | |
920 | { BFD_RELOC_RISCV_RVC_BRANCH, R_RISCV_RVC_BRANCH }, | |
921 | { BFD_RELOC_RISCV_RVC_JUMP, R_RISCV_RVC_JUMP }, | |
922 | { BFD_RELOC_RISCV_RVC_LUI, R_RISCV_RVC_LUI }, | |
923 | { BFD_RELOC_RISCV_GPREL_I, R_RISCV_GPREL_I }, | |
924 | { BFD_RELOC_RISCV_GPREL_S, R_RISCV_GPREL_S }, | |
45f76423 AW |
925 | { BFD_RELOC_RISCV_TPREL_I, R_RISCV_TPREL_I }, |
926 | { BFD_RELOC_RISCV_TPREL_S, R_RISCV_TPREL_S }, | |
927 | { BFD_RELOC_RISCV_RELAX, R_RISCV_RELAX }, | |
928 | { BFD_RELOC_RISCV_SUB6, R_RISCV_SUB6 }, | |
929 | { BFD_RELOC_RISCV_SET6, R_RISCV_SET6 }, | |
930 | { BFD_RELOC_RISCV_SET8, R_RISCV_SET8 }, | |
931 | { BFD_RELOC_RISCV_SET16, R_RISCV_SET16 }, | |
932 | { BFD_RELOC_RISCV_SET32, R_RISCV_SET32 }, | |
a6cbf936 | 933 | { BFD_RELOC_RISCV_32_PCREL, R_RISCV_32_PCREL }, |
e23eba97 NC |
934 | }; |
935 | ||
936 | /* Given a BFD reloc type, return a howto structure. */ | |
937 | ||
938 | reloc_howto_type * | |
939 | riscv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
940 | bfd_reloc_code_real_type code) | |
941 | { | |
942 | unsigned int i; | |
943 | ||
944 | for (i = 0; i < ARRAY_SIZE (riscv_reloc_map); i++) | |
945 | if (riscv_reloc_map[i].bfd_val == code) | |
946 | return &howto_table[(int) riscv_reloc_map[i].elf_val]; | |
947 | ||
948 | bfd_set_error (bfd_error_bad_value); | |
949 | return NULL; | |
950 | } | |
951 | ||
952 | reloc_howto_type * | |
953 | riscv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
954 | { | |
955 | unsigned int i; | |
956 | ||
957 | for (i = 0; i < ARRAY_SIZE (howto_table); i++) | |
958 | if (howto_table[i].name && strcasecmp (howto_table[i].name, r_name) == 0) | |
959 | return &howto_table[i]; | |
960 | ||
961 | return NULL; | |
962 | } | |
963 | ||
964 | reloc_howto_type * | |
0aa13fee | 965 | riscv_elf_rtype_to_howto (bfd *abfd, unsigned int r_type) |
e23eba97 NC |
966 | { |
967 | if (r_type >= ARRAY_SIZE (howto_table)) | |
968 | { | |
0aa13fee AM |
969 | (*_bfd_error_handler) (_("%pB: unsupported relocation type %#x"), |
970 | abfd, r_type); | |
e23eba97 NC |
971 | bfd_set_error (bfd_error_bad_value); |
972 | return NULL; | |
973 | } | |
974 | return &howto_table[r_type]; | |
975 | } | |
57593436 KLC |
976 | |
977 | /* Special_function of RISCV_ADD and RISCV_SUB relocations. */ | |
978 | ||
979 | static bfd_reloc_status_type | |
980 | riscv_elf_add_sub_reloc (bfd *abfd, | |
981 | arelent *reloc_entry, | |
982 | asymbol *symbol, | |
983 | void *data, | |
984 | asection *input_section, | |
985 | bfd *output_bfd, | |
986 | char **error_message ATTRIBUTE_UNUSED) | |
987 | { | |
988 | reloc_howto_type *howto = reloc_entry->howto; | |
989 | bfd_vma relocation; | |
990 | ||
991 | if (output_bfd != NULL | |
992 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
993 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
994 | { | |
995 | reloc_entry->address += input_section->output_offset; | |
996 | return bfd_reloc_ok; | |
997 | } | |
998 | ||
999 | if (output_bfd != NULL) | |
1000 | return bfd_reloc_continue; | |
1001 | ||
1002 | relocation = symbol->value + symbol->section->output_section->vma | |
1003 | + symbol->section->output_offset + reloc_entry->addend; | |
1004 | bfd_vma old_value = bfd_get (howto->bitsize, abfd, | |
1005 | data + reloc_entry->address); | |
1006 | ||
1007 | switch (howto->type) | |
1008 | { | |
1009 | case R_RISCV_ADD8: | |
1010 | case R_RISCV_ADD16: | |
1011 | case R_RISCV_ADD32: | |
1012 | case R_RISCV_ADD64: | |
1013 | relocation = old_value + relocation; | |
1014 | break; | |
1015 | case R_RISCV_SUB6: | |
1016 | case R_RISCV_SUB8: | |
1017 | case R_RISCV_SUB16: | |
1018 | case R_RISCV_SUB32: | |
1019 | case R_RISCV_SUB64: | |
1020 | relocation = old_value - relocation; | |
1021 | break; | |
1022 | } | |
1023 | bfd_put (howto->bitsize, abfd, relocation, data + reloc_entry->address); | |
1024 | ||
1025 | return bfd_reloc_ok; | |
1026 | } | |
1080bf78 | 1027 | |
dfe92496 | 1028 | /* Array is used to compare the all extensions' order quickly. |
7ef19aa6 | 1029 | |
dfe92496 NC |
1030 | Zero number means it is a preserved keyword. |
1031 | Negative number means it is a prefix keyword (s, h, x, z). | |
1032 | Positive number means it is a standard extension. */ | |
1033 | ||
1034 | static int riscv_ext_order[26] = {0}; | |
1035 | ||
1036 | /* Similar to the strcmp. It returns an integer less than, equal to, | |
1037 | or greater than zero if `subset2` is found, respectively, to be less | |
1038 | than, to match, or be greater than `subset1`. */ | |
1039 | ||
1040 | static int | |
1041 | riscv_compare_subsets (const char *subset1, const char *subset2) | |
7ef19aa6 | 1042 | { |
dfe92496 NC |
1043 | int order1 = riscv_ext_order[(*subset1 - 'a')]; |
1044 | int order2 = riscv_ext_order[(*subset2 - 'a')]; | |
7ef19aa6 | 1045 | |
dfe92496 NC |
1046 | /* Compare the standard extension first. */ |
1047 | if (order1 > 0 && order2 > 0) | |
1048 | return order1 - order2; | |
7ef19aa6 | 1049 | |
dfe92496 NC |
1050 | if (order1 == order2 && order1 < 0) |
1051 | { | |
1052 | /* Compare the standard addition z extensions. */ | |
1053 | if (*subset1 == 'z') | |
1054 | { | |
1055 | order1 = riscv_ext_order[(*++subset1 - 'a')]; | |
1056 | order2 = riscv_ext_order[(*++subset2 - 'a')]; | |
1057 | if (order1 != order2) | |
1058 | return order1 - order2; | |
1059 | } | |
1060 | return strcasecmp (++subset1, ++subset2); | |
1061 | } | |
1062 | ||
1063 | return order2 - order1; | |
1064 | } | |
1065 | ||
1066 | /* Find subset in the list. Return TRUE and set `current` to the subset | |
1067 | if it is found. Otherwise, return FALSE and set `current` to the place | |
1068 | where we should insert the subset. However, return FALSE with the NULL | |
1069 | `current` means we should insert the subset at the head of subset list, | |
1070 | if needed. */ | |
1071 | ||
1072 | bfd_boolean | |
1073 | riscv_lookup_subset (const riscv_subset_list_t *subset_list, | |
1074 | const char *subset, | |
1075 | riscv_subset_t **current) | |
1076 | { | |
1077 | riscv_subset_t *s, *pre_s = NULL; | |
1078 | ||
1079 | for (s = subset_list->head; | |
1080 | s != NULL; | |
1081 | pre_s = s, s = s->next) | |
1082 | { | |
1083 | int cmp = riscv_compare_subsets (s->name, subset); | |
1084 | if (cmp == 0) | |
1085 | { | |
1086 | *current = s; | |
1087 | return TRUE; | |
1088 | } | |
1089 | else if (cmp > 0) | |
1090 | break; | |
1091 | } | |
1092 | *current = pre_s; | |
1093 | return FALSE; | |
7ef19aa6 NC |
1094 | } |
1095 | ||
dfe92496 | 1096 | /* Add arch string extension to the last of the subset list. */ |
7ef19aa6 NC |
1097 | |
1098 | void | |
1099 | riscv_add_subset (riscv_subset_list_t *subset_list, | |
1100 | const char *subset, | |
1101 | int major, | |
1102 | int minor) | |
1103 | { | |
1104 | riscv_subset_t *s = xmalloc (sizeof *s); | |
1105 | ||
1106 | if (subset_list->head == NULL) | |
1107 | subset_list->head = s; | |
1108 | ||
1109 | s->name = xstrdup (subset); | |
1110 | s->major_version = major; | |
1111 | s->minor_version = minor; | |
1112 | s->next = NULL; | |
1113 | ||
1114 | if (subset_list->tail != NULL) | |
1115 | subset_list->tail->next = s; | |
1116 | subset_list->tail = s; | |
1117 | } | |
1118 | ||
dfe92496 NC |
1119 | /* Add the implicit extension to the subset list. Search the |
1120 | list first, and then find the right place to add. */ | |
1121 | ||
1122 | static void | |
1123 | riscv_add_implicit_subset (riscv_subset_list_t *subset_list, | |
1124 | const char *subset, | |
1125 | int major, | |
1126 | int minor) | |
1127 | { | |
1128 | riscv_subset_t *current, *new; | |
1129 | ||
1130 | if (riscv_lookup_subset (subset_list, subset, ¤t)) | |
1131 | return; | |
1132 | ||
1133 | new = xmalloc (sizeof *new); | |
1134 | new->name = xstrdup (subset); | |
1135 | new->major_version = major; | |
1136 | new->minor_version = minor; | |
1137 | new->next = NULL; | |
1138 | ||
1139 | if (current != NULL) | |
1140 | { | |
1141 | new->next = current->next; | |
1142 | current->next = new; | |
1143 | } | |
1144 | else | |
1145 | { | |
1146 | new->next = subset_list->head; | |
1147 | subset_list->head = new; | |
1148 | } | |
1149 | } | |
1150 | ||
729a5353 NC |
1151 | /* These extensions are added to the subset list for special purposes, |
1152 | with the explicit versions or the RISCV_UNKNOWN_VERSION versions. | |
1153 | Therefore, we won't output them to the output arch string in the | |
1154 | riscv_arch_str1, if the versions are unknown. */ | |
1155 | ||
1156 | static bfd_boolean | |
1157 | riscv_ext_dont_care_version (const char *subset) | |
1158 | { | |
1159 | if (strcmp (subset, "g") == 0 | |
1160 | || strcmp (subset, "zicsr") == 0 | |
1161 | || strcmp (subset, "zifencei") == 0) | |
1162 | return TRUE; | |
1163 | return FALSE; | |
1164 | } | |
1165 | ||
dfe92496 NC |
1166 | /* We have to add all arch string extensions first, and then start to |
1167 | add their implicit extensions. The arch string extensions must be | |
1168 | set in order, so we can add them to the last of the subset list | |
1169 | directly, without searching. | |
1170 | ||
1171 | Find the default versions for the extension before adding them to | |
7ef19aa6 NC |
1172 | the subset list, if their versions are RISCV_UNKNOWN_VERSION. |
1173 | Afterwards, report errors if we can not find their default versions. */ | |
1174 | ||
1175 | static void | |
1176 | riscv_parse_add_subset (riscv_parse_subset_t *rps, | |
1177 | const char *subset, | |
1178 | int major, | |
dfe92496 NC |
1179 | int minor, |
1180 | bfd_boolean implicit) | |
7ef19aa6 NC |
1181 | { |
1182 | int major_version = major; | |
1183 | int minor_version = minor; | |
1184 | ||
1185 | if ((major_version == RISCV_UNKNOWN_VERSION | |
1186 | || minor_version == RISCV_UNKNOWN_VERSION) | |
1187 | && rps->get_default_version != NULL) | |
1188 | rps->get_default_version (subset, &major_version, &minor_version); | |
1189 | ||
729a5353 | 1190 | if (!riscv_ext_dont_care_version (subset) |
dfe92496 NC |
1191 | && (major_version == RISCV_UNKNOWN_VERSION |
1192 | || minor_version == RISCV_UNKNOWN_VERSION)) | |
7ef19aa6 | 1193 | { |
729a5353 NC |
1194 | /* We only add the implicit extension if it is supported in the |
1195 | chosen ISA spec. */ | |
1196 | if (implicit) | |
1197 | return; | |
1198 | ||
7ef19aa6 NC |
1199 | if (subset[0] == 'x') |
1200 | rps->error_handler | |
1201 | (_("x ISA extension `%s' must be set with the versions"), | |
1202 | subset); | |
1203 | else | |
1204 | rps->error_handler | |
1205 | (_("cannot find default versions of the ISA extension `%s'"), | |
1206 | subset); | |
1207 | return; | |
1208 | } | |
1209 | ||
dfe92496 NC |
1210 | if (!implicit) |
1211 | riscv_add_subset (rps->subset_list, subset, | |
1212 | major_version, minor_version); | |
729a5353 | 1213 | else |
dfe92496 NC |
1214 | riscv_add_implicit_subset (rps->subset_list, subset, |
1215 | major_version, minor_version); | |
7ef19aa6 NC |
1216 | } |
1217 | ||
1218 | /* Release subset list. */ | |
1219 | ||
1220 | void | |
1221 | riscv_release_subset_list (riscv_subset_list_t *subset_list) | |
1222 | { | |
1223 | while (subset_list->head != NULL) | |
1224 | { | |
1225 | riscv_subset_t *next = subset_list->head->next; | |
1226 | free ((void *)subset_list->head->name); | |
1227 | free (subset_list->head); | |
1228 | subset_list->head = next; | |
1229 | } | |
1230 | ||
1231 | subset_list->tail = NULL; | |
1232 | } | |
1233 | ||
d541518b | 1234 | /* Parsing extension version. |
1080bf78 JW |
1235 | |
1236 | Return Value: | |
1237 | Points to the end of version | |
1238 | ||
1239 | Arguments: | |
d541518b | 1240 | `rps`: Hooks and status for parsing extensions. |
1080bf78 JW |
1241 | `march`: Full arch string. |
1242 | `p`: Curent parsing position. | |
7ef19aa6 NC |
1243 | `major_version`: Parsed major version. |
1244 | `minor_version`: Parsed minor version. | |
1245 | `std_ext_p`: True if parsing standard extension. */ | |
1080bf78 JW |
1246 | |
1247 | static const char * | |
1248 | riscv_parsing_subset_version (riscv_parse_subset_t *rps, | |
1249 | const char *march, | |
1250 | const char *p, | |
7ef19aa6 NC |
1251 | int *major_version, |
1252 | int *minor_version, | |
1253 | bfd_boolean std_ext_p) | |
1080bf78 JW |
1254 | { |
1255 | bfd_boolean major_p = TRUE; | |
7ef19aa6 | 1256 | int version = 0; |
1080bf78 JW |
1257 | char np; |
1258 | ||
8f595e9b NC |
1259 | *major_version = 0; |
1260 | *minor_version = 0; | |
1261 | for (; *p; ++p) | |
1080bf78 JW |
1262 | { |
1263 | if (*p == 'p') | |
1264 | { | |
1265 | np = *(p + 1); | |
1266 | ||
1267 | if (!ISDIGIT (np)) | |
1268 | { | |
1269 | /* Might be beginning of `p` extension. */ | |
1270 | if (std_ext_p) | |
1271 | { | |
1272 | *major_version = version; | |
1273 | *minor_version = 0; | |
1274 | return p; | |
1275 | } | |
1276 | else | |
1277 | { | |
8f595e9b | 1278 | rps->error_handler |
d541518b | 1279 | (_("-march=%s: expect number after `%dp'"), |
8f595e9b | 1280 | march, version); |
1080bf78 JW |
1281 | return NULL; |
1282 | } | |
1283 | } | |
1284 | ||
8f595e9b | 1285 | *major_version = version; |
1080bf78 JW |
1286 | major_p = FALSE; |
1287 | version = 0; | |
1288 | } | |
1289 | else if (ISDIGIT (*p)) | |
1290 | version = (version * 10) + (*p - '0'); | |
1291 | else | |
1292 | break; | |
1293 | } | |
1294 | ||
1295 | if (major_p) | |
8f595e9b | 1296 | *major_version = version; |
1080bf78 | 1297 | else |
8f595e9b | 1298 | *minor_version = version; |
1080bf78 | 1299 | |
7ef19aa6 NC |
1300 | /* We can not find any version in string. */ |
1301 | if (*major_version == 0 && *minor_version == 0) | |
1302 | { | |
1303 | *major_version = RISCV_UNKNOWN_VERSION; | |
1304 | *minor_version = RISCV_UNKNOWN_VERSION; | |
1305 | } | |
1306 | ||
1080bf78 JW |
1307 | return p; |
1308 | } | |
1309 | ||
1310 | /* Return string which contain all supported standard extensions in | |
1311 | canonical order. */ | |
1312 | ||
1313 | const char * | |
1314 | riscv_supported_std_ext (void) | |
1315 | { | |
1316 | return "mafdqlcbjtpvn"; | |
1317 | } | |
1318 | ||
1319 | /* Parsing function for standard extensions. | |
1320 | ||
1321 | Return Value: | |
1322 | Points to the end of extensions. | |
1323 | ||
1324 | Arguments: | |
d541518b | 1325 | `rps`: Hooks and status for parsing extensions. |
1080bf78 JW |
1326 | `march`: Full arch string. |
1327 | `p`: Curent parsing position. */ | |
1328 | ||
1329 | static const char * | |
1330 | riscv_parse_std_ext (riscv_parse_subset_t *rps, | |
8f595e9b NC |
1331 | const char *march, |
1332 | const char *p) | |
1080bf78 JW |
1333 | { |
1334 | const char *all_std_exts = riscv_supported_std_ext (); | |
1335 | const char *std_exts = all_std_exts; | |
7ef19aa6 NC |
1336 | int major_version; |
1337 | int minor_version; | |
d541518b | 1338 | char subset[2] = {0, 0}; |
1080bf78 JW |
1339 | |
1340 | /* First letter must start with i, e or g. */ | |
1341 | switch (*p) | |
1342 | { | |
1343 | case 'i': | |
d541518b | 1344 | p = riscv_parsing_subset_version (rps, march, ++p, |
8f595e9b | 1345 | &major_version, |
7ef19aa6 NC |
1346 | &minor_version, TRUE); |
1347 | riscv_parse_add_subset (rps, "i", | |
1348 | major_version, | |
dfe92496 | 1349 | minor_version, FALSE); |
1080bf78 JW |
1350 | break; |
1351 | ||
1352 | case 'e': | |
d541518b | 1353 | p = riscv_parsing_subset_version (rps, march, ++p, |
8f595e9b | 1354 | &major_version, |
7ef19aa6 NC |
1355 | &minor_version, TRUE); |
1356 | riscv_parse_add_subset (rps, "e", | |
1357 | major_version, | |
dfe92496 | 1358 | minor_version, FALSE); |
8f595e9b | 1359 | /* i-ext must be enabled. */ |
7ef19aa6 NC |
1360 | riscv_parse_add_subset (rps, "i", |
1361 | RISCV_UNKNOWN_VERSION, | |
dfe92496 | 1362 | RISCV_UNKNOWN_VERSION, FALSE); |
1080bf78 JW |
1363 | |
1364 | if (*rps->xlen > 32) | |
1365 | { | |
8f595e9b NC |
1366 | rps->error_handler |
1367 | (_("-march=%s: rv%de is not a valid base ISA"), | |
1368 | march, *rps->xlen); | |
1080bf78 JW |
1369 | return NULL; |
1370 | } | |
1080bf78 JW |
1371 | break; |
1372 | ||
1373 | case 'g': | |
d541518b | 1374 | p = riscv_parsing_subset_version (rps, march, ++p, |
8f595e9b | 1375 | &major_version, |
7ef19aa6 | 1376 | &minor_version, TRUE); |
8f595e9b | 1377 | /* i-ext must be enabled. */ |
7ef19aa6 NC |
1378 | riscv_parse_add_subset (rps, "i", |
1379 | RISCV_UNKNOWN_VERSION, | |
dfe92496 | 1380 | RISCV_UNKNOWN_VERSION, FALSE); |
00d4d1b0 NC |
1381 | /* g-ext is used to add the implicit extensions, but will |
1382 | not be output to the arch string. */ | |
1383 | riscv_parse_add_subset (rps, "g", | |
1384 | major_version, | |
1385 | minor_version, FALSE); | |
1080bf78 JW |
1386 | for ( ; *std_exts != 'q'; std_exts++) |
1387 | { | |
d541518b | 1388 | subset[0] = *std_exts; |
7ef19aa6 NC |
1389 | riscv_parse_add_subset (rps, subset, |
1390 | RISCV_UNKNOWN_VERSION, | |
dfe92496 | 1391 | RISCV_UNKNOWN_VERSION, FALSE); |
1080bf78 JW |
1392 | } |
1393 | break; | |
1394 | ||
1395 | default: | |
8f595e9b | 1396 | rps->error_handler |
d541518b NC |
1397 | (_("-march=%s: first ISA extension must be `e', `i' or `g'"), |
1398 | march); | |
1080bf78 JW |
1399 | return NULL; |
1400 | } | |
1401 | ||
8f595e9b | 1402 | while (p != NULL && *p != '\0') |
1080bf78 | 1403 | { |
5a1b31e1 | 1404 | if (*p == 'x' || *p == 's' || *p == 'h' || *p == 'z') |
1080bf78 JW |
1405 | break; |
1406 | ||
1407 | if (*p == '_') | |
1408 | { | |
1409 | p++; | |
1410 | continue; | |
1411 | } | |
1412 | ||
1080bf78 | 1413 | /* Checking canonical order. */ |
d541518b NC |
1414 | char std_ext = *p; |
1415 | while (*std_exts && std_ext != *std_exts) | |
1416 | std_exts++; | |
1080bf78 JW |
1417 | |
1418 | if (std_ext != *std_exts) | |
1419 | { | |
1420 | if (strchr (all_std_exts, std_ext) == NULL) | |
8f595e9b | 1421 | rps->error_handler |
d541518b NC |
1422 | (_("-march=%s: unknown standard ISA extension `%c'"), |
1423 | march, std_ext); | |
1080bf78 | 1424 | else |
8f595e9b | 1425 | rps->error_handler |
d541518b NC |
1426 | (_("-march=%s: standard ISA extension `%c' is not " |
1427 | "in canonical order"), march, std_ext); | |
1080bf78 JW |
1428 | return NULL; |
1429 | } | |
1430 | ||
1431 | std_exts++; | |
1080bf78 | 1432 | subset[0] = std_ext; |
d541518b | 1433 | p = riscv_parsing_subset_version (rps, march, ++p, |
8f595e9b | 1434 | &major_version, |
7ef19aa6 NC |
1435 | &minor_version, TRUE); |
1436 | riscv_parse_add_subset (rps, subset, | |
1437 | major_version, | |
dfe92496 | 1438 | minor_version, FALSE); |
1080bf78 | 1439 | } |
d541518b | 1440 | |
1080bf78 JW |
1441 | return p; |
1442 | } | |
1443 | ||
403d1bd9 | 1444 | /* Classify the argument 'arch' into one of riscv_isa_ext_class_t. */ |
1080bf78 | 1445 | |
403d1bd9 JW |
1446 | riscv_isa_ext_class_t |
1447 | riscv_get_prefix_class (const char *arch) | |
1448 | { | |
1449 | switch (*arch) | |
1450 | { | |
b5f998b2 | 1451 | case 's': return RV_ISA_CLASS_S; |
5a1b31e1 | 1452 | case 'h': return RV_ISA_CLASS_H; |
403d1bd9 JW |
1453 | case 'x': return RV_ISA_CLASS_X; |
1454 | case 'z': return RV_ISA_CLASS_Z; | |
1455 | default: return RV_ISA_CLASS_UNKNOWN; | |
1456 | } | |
1457 | } | |
1458 | ||
1459 | /* Structure describing parameters to use when parsing a particular | |
1460 | riscv_isa_ext_class_t. One of these should be provided for each | |
1461 | possible class, except RV_ISA_CLASS_UNKNOWN. */ | |
1462 | ||
1463 | typedef struct riscv_parse_config | |
1464 | { | |
1465 | /* Class of the extension. */ | |
1466 | riscv_isa_ext_class_t class; | |
1467 | ||
d541518b | 1468 | /* Prefix string for error printing and internal parser usage. */ |
403d1bd9 JW |
1469 | const char *prefix; |
1470 | ||
d541518b NC |
1471 | /* Predicate which is used for checking whether this is a "known" |
1472 | extension. For 'x', it always returns true since they are by | |
403d1bd9 JW |
1473 | definition non-standard and cannot be known. */ |
1474 | bfd_boolean (*ext_valid_p) (const char *); | |
1475 | } riscv_parse_config_t; | |
1476 | ||
d541518b NC |
1477 | /* Parsing function for prefixed extensions. |
1478 | ||
1479 | Return Value: | |
1480 | Points to the end of extension. | |
1481 | ||
1482 | Arguments: | |
1483 | `rps`: Hooks and status for parsing extensions. | |
1484 | `march`: Full architecture string. | |
1485 | `p`: Curent parsing position. | |
1486 | `config`: What class and predicate function to use for the | |
1487 | extension. */ | |
1080bf78 JW |
1488 | |
1489 | static const char * | |
403d1bd9 JW |
1490 | riscv_parse_prefixed_ext (riscv_parse_subset_t *rps, |
1491 | const char *march, | |
1492 | const char *p, | |
1493 | const riscv_parse_config_t *config) | |
1080bf78 | 1494 | { |
7ef19aa6 NC |
1495 | int major_version; |
1496 | int minor_version; | |
403d1bd9 JW |
1497 | const char *last_name; |
1498 | riscv_isa_ext_class_t class; | |
1080bf78 JW |
1499 | |
1500 | while (*p) | |
1501 | { | |
1502 | if (*p == '_') | |
1503 | { | |
1504 | p++; | |
1505 | continue; | |
1506 | } | |
1507 | ||
403d1bd9 JW |
1508 | /* Assert that the current extension specifier matches our parsing |
1509 | class. */ | |
1510 | class = riscv_get_prefix_class (p); | |
d541518b NC |
1511 | if (class != config->class |
1512 | || class == RV_ISA_CLASS_UNKNOWN) | |
1080bf78 JW |
1513 | break; |
1514 | ||
1515 | char *subset = xstrdup (p); | |
1516 | char *q = subset; | |
1517 | const char *end_of_version; | |
1518 | ||
1519 | while (*++q != '\0' && *q != '_' && !ISDIGIT (*q)) | |
1520 | ; | |
1521 | ||
1522 | end_of_version = | |
d541518b NC |
1523 | riscv_parsing_subset_version (rps, march, q, |
1524 | &major_version, | |
7ef19aa6 | 1525 | &minor_version, FALSE); |
1080bf78 JW |
1526 | *q = '\0'; |
1527 | ||
7ef19aa6 NC |
1528 | if (end_of_version == NULL) |
1529 | { | |
1530 | free (subset); | |
1531 | return NULL; | |
1532 | } | |
1533 | ||
d541518b | 1534 | /* Check that the prefix extension is known. |
403d1bd9 | 1535 | For 'x', anything goes but it cannot simply be 'x'. |
b5f998b2 | 1536 | For 's', it must be known from a list and cannot simply be 's'. |
5a1b31e1 | 1537 | For 'h', it must be known from a list and cannot simply be 'h'. |
b5f998b2 | 1538 | For 'z', it must be known from a list and cannot simply be 'z'. */ |
403d1bd9 JW |
1539 | |
1540 | /* Check that the extension name is well-formed. */ | |
1541 | if (!config->ext_valid_p (subset)) | |
1542 | { | |
1543 | rps->error_handler | |
d541518b | 1544 | (_("-march=%s: unknown %s ISA extension `%s'"), |
403d1bd9 JW |
1545 | march, config->prefix, subset); |
1546 | free (subset); | |
1547 | return NULL; | |
1548 | } | |
1549 | ||
d541518b | 1550 | /* Check that the extension isn't duplicate. */ |
403d1bd9 | 1551 | last_name = rps->subset_list->tail->name; |
403d1bd9 JW |
1552 | if (!strcasecmp (last_name, subset)) |
1553 | { | |
8f595e9b | 1554 | rps->error_handler |
d541518b | 1555 | (_("-march=%s: duplicate %s ISA extension `%s'"), |
8f595e9b | 1556 | march, config->prefix, subset); |
403d1bd9 JW |
1557 | free (subset); |
1558 | return NULL; | |
1559 | } | |
1560 | ||
d541518b | 1561 | /* Check that the extension is in alphabetical order. */ |
6729e2c2 | 1562 | if (riscv_compare_subsets (last_name, subset) > 0) |
403d1bd9 | 1563 | { |
8f595e9b | 1564 | rps->error_handler |
d541518b NC |
1565 | (_("-march=%s: %s ISA extension `%s' is not in alphabetical " |
1566 | "order. It must come before `%s'"), | |
8f595e9b | 1567 | march, config->prefix, subset, last_name); |
403d1bd9 JW |
1568 | free (subset); |
1569 | return NULL; | |
1570 | } | |
1571 | ||
7ef19aa6 NC |
1572 | riscv_parse_add_subset (rps, subset, |
1573 | major_version, | |
dfe92496 | 1574 | minor_version, FALSE); |
1080bf78 JW |
1575 | free (subset); |
1576 | p += end_of_version - subset; | |
1577 | ||
1578 | if (*p != '\0' && *p != '_') | |
1579 | { | |
d541518b NC |
1580 | rps->error_handler |
1581 | (_("-march=%s: %s ISA extension must separate with _"), | |
1582 | march, config->prefix); | |
1080bf78 JW |
1583 | return NULL; |
1584 | } | |
1585 | } | |
1586 | ||
1587 | return p; | |
1588 | } | |
1589 | ||
d541518b NC |
1590 | /* Lists of prefixed class extensions that binutils should know about. |
1591 | Whether or not a particular entry is in these lists will dictate if | |
1592 | gas/ld will accept its presence in the architecture string. | |
403d1bd9 | 1593 | |
d541518b NC |
1594 | Please add the extensions to the lists in lower case. However, keep |
1595 | these subsets in alphabetical order in these tables is recommended, | |
1596 | although there is no impact on the current implementation. */ | |
403d1bd9 JW |
1597 | |
1598 | static const char * const riscv_std_z_ext_strtab[] = | |
d541518b | 1599 | { |
5a1b31e1 | 1600 | "zicsr", "zifencei", NULL |
d541518b | 1601 | }; |
403d1bd9 JW |
1602 | |
1603 | static const char * const riscv_std_s_ext_strtab[] = | |
d541518b NC |
1604 | { |
1605 | NULL | |
1606 | }; | |
403d1bd9 | 1607 | |
5a1b31e1 NC |
1608 | static const char * const riscv_std_h_ext_strtab[] = |
1609 | { | |
1610 | NULL | |
1611 | }; | |
1612 | ||
d541518b NC |
1613 | /* For the extension `ext`, search through the list of known extensions |
1614 | `known_exts` for a match, and return TRUE if found. */ | |
403d1bd9 JW |
1615 | |
1616 | static bfd_boolean | |
1617 | riscv_multi_letter_ext_valid_p (const char *ext, | |
1618 | const char *const *known_exts) | |
1619 | { | |
2d0e1217 AM |
1620 | size_t i; |
1621 | ||
1622 | for (i = 0; known_exts[i]; ++i) | |
1623 | if (!strcmp (ext, known_exts[i])) | |
1624 | return TRUE; | |
403d1bd9 JW |
1625 | |
1626 | return FALSE; | |
1627 | } | |
1628 | ||
1629 | /* Predicator function for x-prefixed extensions. | |
1630 | Anything goes, except the literal 'x'. */ | |
1631 | ||
1632 | static bfd_boolean | |
1633 | riscv_ext_x_valid_p (const char *arg) | |
1634 | { | |
1635 | if (!strcasecmp (arg, "x")) | |
1636 | return FALSE; | |
1637 | ||
1638 | return TRUE; | |
1639 | } | |
1640 | ||
1641 | /* Predicator functions for z-prefixed extensions. | |
1642 | Only known z-extensions are permitted. */ | |
1643 | ||
1644 | static bfd_boolean | |
1645 | riscv_ext_z_valid_p (const char *arg) | |
1646 | { | |
1647 | return riscv_multi_letter_ext_valid_p (arg, riscv_std_z_ext_strtab); | |
1648 | } | |
1649 | ||
1650 | /* Predicator function for 's' prefixed extensions. | |
d541518b | 1651 | Only known s-extensions are permitted. */ |
403d1bd9 JW |
1652 | |
1653 | static bfd_boolean | |
1654 | riscv_ext_s_valid_p (const char *arg) | |
1655 | { | |
1656 | return riscv_multi_letter_ext_valid_p (arg, riscv_std_s_ext_strtab); | |
1657 | } | |
1658 | ||
5a1b31e1 NC |
1659 | /* Predicator function for 'h' prefixed extensions. |
1660 | Only known h-extensions are permitted. */ | |
1661 | ||
1662 | static bfd_boolean | |
1663 | riscv_ext_h_valid_p (const char *arg) | |
1664 | { | |
1665 | return riscv_multi_letter_ext_valid_p (arg, riscv_std_h_ext_strtab); | |
1666 | } | |
1667 | ||
d541518b NC |
1668 | /* Parsing order of the prefixed extensions that is specified by |
1669 | the ISA spec. */ | |
403d1bd9 JW |
1670 | |
1671 | static const riscv_parse_config_t parse_config[] = | |
1672 | { | |
d541518b | 1673 | {RV_ISA_CLASS_S, "s", riscv_ext_s_valid_p}, |
5a1b31e1 | 1674 | {RV_ISA_CLASS_H, "h", riscv_ext_h_valid_p}, |
d541518b NC |
1675 | {RV_ISA_CLASS_Z, "z", riscv_ext_z_valid_p}, |
1676 | {RV_ISA_CLASS_X, "x", riscv_ext_x_valid_p}, | |
1677 | {RV_ISA_CLASS_UNKNOWN, NULL, NULL} | |
403d1bd9 JW |
1678 | }; |
1679 | ||
dfe92496 NC |
1680 | /* Init the riscv_ext_order array. */ |
1681 | ||
1682 | static void | |
1683 | riscv_init_ext_order (void) | |
1684 | { | |
1685 | static bfd_boolean inited = FALSE; | |
1686 | const char *std_base_exts = "eig"; | |
1687 | const char *std_remain_exts = riscv_supported_std_ext (); | |
1688 | const char *ext; | |
1689 | unsigned int i; | |
1690 | int order; | |
1691 | ||
1692 | if (inited) | |
1693 | return; | |
1694 | ||
1695 | /* All standard extensions' orders are positive numbers. */ | |
1696 | order = 1; | |
1697 | ||
1698 | /* Init the standard base extensions first. */ | |
1699 | for (ext = std_base_exts; *ext; ext++) | |
1700 | riscv_ext_order[(*ext - 'a')] = order++; | |
1701 | ||
1702 | /* Init the standard remaining extensions. */ | |
1703 | for (ext = std_remain_exts; *ext; ext++) | |
1704 | riscv_ext_order[(*ext - 'a')] = order++; | |
1705 | ||
1706 | /* Init the order for prefixed keywords. The orders are | |
1707 | negative numbers. */ | |
1708 | order = -1; | |
1709 | for (i = 0; parse_config[i].class != RV_ISA_CLASS_UNKNOWN; i++) | |
1710 | { | |
1711 | ext = parse_config[i].prefix; | |
1712 | riscv_ext_order[(*ext - 'a')] = order--; | |
1713 | } | |
1714 | ||
1715 | inited = TRUE; | |
1716 | } | |
1717 | ||
1718 | /* Add the implicit extensions according to the arch string extensions. */ | |
1719 | ||
1720 | static void | |
1721 | riscv_parse_add_implicit_subsets (riscv_parse_subset_t *rps) | |
1722 | { | |
1723 | riscv_subset_t *subset = NULL; | |
1724 | ||
1725 | /* Add the zicsr and zifencei only when the i's version less than 2.1. */ | |
1726 | if ((riscv_lookup_subset (rps->subset_list, "i", &subset)) | |
1727 | && (subset->major_version < 2 | |
1728 | || (subset->major_version == 2 | |
1729 | && subset->minor_version < 1))) | |
1730 | { | |
1731 | riscv_parse_add_subset (rps, "zicsr", | |
1732 | RISCV_UNKNOWN_VERSION, | |
1733 | RISCV_UNKNOWN_VERSION, TRUE); | |
1734 | riscv_parse_add_subset (rps, "zifencei", | |
1735 | RISCV_UNKNOWN_VERSION, | |
1736 | RISCV_UNKNOWN_VERSION, TRUE); | |
1737 | } | |
1738 | ||
1739 | if ((riscv_lookup_subset (rps->subset_list, "q", &subset))) | |
1740 | { | |
1741 | riscv_parse_add_subset (rps, "d", | |
1742 | RISCV_UNKNOWN_VERSION, | |
1743 | RISCV_UNKNOWN_VERSION, TRUE); | |
1744 | riscv_parse_add_subset (rps, "f", | |
1745 | RISCV_UNKNOWN_VERSION, | |
1746 | RISCV_UNKNOWN_VERSION, TRUE); | |
1747 | riscv_parse_add_subset (rps, "zicsr", | |
1748 | RISCV_UNKNOWN_VERSION, | |
1749 | RISCV_UNKNOWN_VERSION, TRUE); | |
1750 | } | |
1751 | else if ((riscv_lookup_subset (rps->subset_list, "d", &subset))) | |
1752 | { | |
1753 | riscv_parse_add_subset (rps, "f", | |
1754 | RISCV_UNKNOWN_VERSION, | |
1755 | RISCV_UNKNOWN_VERSION, TRUE); | |
1756 | riscv_parse_add_subset (rps, "zicsr", | |
1757 | RISCV_UNKNOWN_VERSION, | |
1758 | RISCV_UNKNOWN_VERSION, TRUE); | |
1759 | } | |
1760 | else if ((riscv_lookup_subset (rps->subset_list, "f", &subset))) | |
1761 | riscv_parse_add_subset (rps, "zicsr", | |
1762 | RISCV_UNKNOWN_VERSION, | |
1763 | RISCV_UNKNOWN_VERSION, TRUE); | |
00d4d1b0 NC |
1764 | |
1765 | if ((riscv_lookup_subset (rps->subset_list, "g", &subset))) | |
1766 | { | |
1767 | riscv_parse_add_subset (rps, "zicsr", | |
1768 | RISCV_UNKNOWN_VERSION, | |
1769 | RISCV_UNKNOWN_VERSION, TRUE); | |
1770 | riscv_parse_add_subset (rps, "zifencei", | |
1771 | RISCV_UNKNOWN_VERSION, | |
1772 | RISCV_UNKNOWN_VERSION, TRUE); | |
1773 | } | |
dfe92496 NC |
1774 | } |
1775 | ||
1080bf78 JW |
1776 | /* Function for parsing arch string. |
1777 | ||
1778 | Return Value: | |
1779 | Return TRUE on success. | |
1780 | ||
1781 | Arguments: | |
d541518b NC |
1782 | `rps`: Hooks and status for parsing extensions. |
1783 | `arch`: Full arch string. */ | |
1080bf78 JW |
1784 | |
1785 | bfd_boolean | |
1786 | riscv_parse_subset (riscv_parse_subset_t *rps, | |
1787 | const char *arch) | |
1788 | { | |
dfe92496 | 1789 | riscv_subset_t *subset = NULL; |
e8d4709e | 1790 | const char *p; |
effc14f5 | 1791 | size_t i; |
7ef19aa6 | 1792 | bfd_boolean no_conflict = TRUE; |
1080bf78 | 1793 | |
e8d4709e NC |
1794 | for (p = arch; *p != '\0'; p++) |
1795 | { | |
1796 | if (ISUPPER (*p)) | |
1797 | { | |
1798 | rps->error_handler | |
1799 | (_("-march=%s: ISA string cannot contain uppercase letters"), | |
1800 | arch); | |
1801 | return FALSE; | |
1802 | } | |
1803 | } | |
1804 | ||
1805 | p = arch; | |
1080bf78 JW |
1806 | if (strncmp (p, "rv32", 4) == 0) |
1807 | { | |
1808 | *rps->xlen = 32; | |
1809 | p += 4; | |
1810 | } | |
1811 | else if (strncmp (p, "rv64", 4) == 0) | |
1812 | { | |
1813 | *rps->xlen = 64; | |
1814 | p += 4; | |
1815 | } | |
1816 | else | |
1817 | { | |
72bd6912 KC |
1818 | /* Arch string shouldn't be NULL or empty here. However, |
1819 | it might be empty only when we failed to merge the arch | |
1820 | string in the riscv_merge_attributes. We have already | |
1821 | issued the correct error message in another side, so do | |
1822 | not issue this error when the arch string is empty. */ | |
1823 | if (strlen (arch)) | |
1824 | rps->error_handler ( | |
1825 | _("-march=%s: ISA string must begin with rv32 or rv64"), | |
1826 | arch); | |
1080bf78 JW |
1827 | return FALSE; |
1828 | } | |
1829 | ||
dfe92496 NC |
1830 | /* Init the riscv_ext_order array to compare the order of extensions |
1831 | quickly. */ | |
1832 | riscv_init_ext_order (); | |
1833 | ||
1080bf78 JW |
1834 | /* Parsing standard extension. */ |
1835 | p = riscv_parse_std_ext (rps, arch, p); | |
1836 | ||
1837 | if (p == NULL) | |
1838 | return FALSE; | |
1839 | ||
403d1bd9 | 1840 | /* Parse the different classes of extensions in the specified order. */ |
d541518b NC |
1841 | for (i = 0; i < ARRAY_SIZE (parse_config); ++i) |
1842 | { | |
1843 | p = riscv_parse_prefixed_ext (rps, arch, p, &parse_config[i]); | |
1080bf78 | 1844 | |
d541518b NC |
1845 | if (p == NULL) |
1846 | return FALSE; | |
1847 | } | |
1080bf78 JW |
1848 | |
1849 | if (*p != '\0') | |
1850 | { | |
8f595e9b | 1851 | rps->error_handler (_("-march=%s: unexpected ISA string at end: %s"), |
1080bf78 JW |
1852 | arch, p); |
1853 | return FALSE; | |
1854 | } | |
1855 | ||
dfe92496 NC |
1856 | /* Finally add implicit extensions according to the current |
1857 | extensions. */ | |
1858 | riscv_parse_add_implicit_subsets (rps); | |
1859 | ||
d541518b | 1860 | /* Check the conflicts. */ |
dfe92496 NC |
1861 | if (riscv_lookup_subset (rps->subset_list, "e", &subset) |
1862 | && riscv_lookup_subset (rps->subset_list, "f", &subset)) | |
1080bf78 | 1863 | { |
8f595e9b NC |
1864 | rps->error_handler |
1865 | (_("-march=%s: rv32e does not support the `f' extension"), | |
1866 | arch); | |
7ef19aa6 | 1867 | no_conflict = FALSE; |
1080bf78 | 1868 | } |
dfe92496 NC |
1869 | if (riscv_lookup_subset (rps->subset_list, "q", &subset) |
1870 | && *rps->xlen < 64) | |
d541518b NC |
1871 | { |
1872 | rps->error_handler | |
1873 | (_("-march=%s: rv32 does not support the `q' extension"), | |
1874 | arch); | |
7ef19aa6 | 1875 | no_conflict = FALSE; |
d541518b | 1876 | } |
7ef19aa6 | 1877 | return no_conflict; |
1080bf78 | 1878 | } |
2dc8dd17 JW |
1879 | |
1880 | /* Return the number of digits for the input. */ | |
1881 | ||
8f595e9b | 1882 | size_t |
2dc8dd17 JW |
1883 | riscv_estimate_digit (unsigned num) |
1884 | { | |
1885 | size_t digit = 0; | |
1886 | if (num == 0) | |
1887 | return 1; | |
1888 | ||
1889 | for (digit = 0; num ; num /= 10) | |
1890 | digit++; | |
1891 | ||
1892 | return digit; | |
1893 | } | |
1894 | ||
1895 | /* Auxiliary function to estimate string length of subset list. */ | |
1896 | ||
1897 | static size_t | |
1898 | riscv_estimate_arch_strlen1 (const riscv_subset_t *subset) | |
1899 | { | |
1900 | if (subset == NULL) | |
1901 | return 6; /* For rv32/rv64/rv128 and string terminator. */ | |
1902 | ||
1903 | return riscv_estimate_arch_strlen1 (subset->next) | |
1904 | + strlen (subset->name) | |
1905 | + riscv_estimate_digit (subset->major_version) | |
1906 | + 1 /* For version seperator: 'p'. */ | |
1907 | + riscv_estimate_digit (subset->minor_version) | |
1908 | + 1 /* For underscore. */; | |
1909 | } | |
1910 | ||
1911 | /* Estimate the string length of this subset list. */ | |
1912 | ||
1913 | static size_t | |
1914 | riscv_estimate_arch_strlen (const riscv_subset_list_t *subset_list) | |
1915 | { | |
1916 | return riscv_estimate_arch_strlen1 (subset_list->head); | |
1917 | } | |
1918 | ||
1919 | /* Auxiliary function to convert subset info to string. */ | |
1920 | ||
1921 | static void | |
1922 | riscv_arch_str1 (riscv_subset_t *subset, | |
1923 | char *attr_str, char *buf, size_t bufsz) | |
1924 | { | |
1925 | const char *underline = "_"; | |
729a5353 | 1926 | riscv_subset_t *subset_t = subset; |
2dc8dd17 | 1927 | |
729a5353 | 1928 | if (subset_t == NULL) |
2dc8dd17 JW |
1929 | return; |
1930 | ||
1931 | /* No underline between rvXX and i/e. */ | |
729a5353 NC |
1932 | if ((strcasecmp (subset_t->name, "i") == 0) |
1933 | || (strcasecmp (subset_t->name, "e") == 0)) | |
2dc8dd17 JW |
1934 | underline = ""; |
1935 | ||
1936 | snprintf (buf, bufsz, "%s%s%dp%d", | |
1937 | underline, | |
729a5353 NC |
1938 | subset_t->name, |
1939 | subset_t->major_version, | |
1940 | subset_t->minor_version); | |
2dc8dd17 JW |
1941 | |
1942 | strncat (attr_str, buf, bufsz); | |
1943 | ||
729a5353 NC |
1944 | /* Skip 'i' extension after 'e', or skip extensions which |
1945 | versions are unknown. */ | |
1946 | while (subset_t->next | |
1947 | && ((strcmp (subset_t->name, "e") == 0 | |
1948 | && strcmp (subset_t->next->name, "i") == 0) | |
1949 | || subset_t->next->major_version == RISCV_UNKNOWN_VERSION | |
1950 | || subset_t->next->minor_version == RISCV_UNKNOWN_VERSION)) | |
1951 | subset_t = subset_t->next; | |
1952 | ||
1953 | riscv_arch_str1 (subset_t->next, attr_str, buf, bufsz); | |
2dc8dd17 JW |
1954 | } |
1955 | ||
1956 | /* Convert subset info to string with explicit version info. */ | |
1957 | ||
1958 | char * | |
1959 | riscv_arch_str (unsigned xlen, const riscv_subset_list_t *subset) | |
1960 | { | |
1961 | size_t arch_str_len = riscv_estimate_arch_strlen (subset); | |
1962 | char *attr_str = xmalloc (arch_str_len); | |
1963 | char *buf = xmalloc (arch_str_len); | |
1964 | ||
1965 | snprintf (attr_str, arch_str_len, "rv%u", xlen); | |
1966 | ||
1967 | riscv_arch_str1 (subset->head, attr_str, buf, arch_str_len); | |
1968 | free (buf); | |
1969 | ||
1970 | return attr_str; | |
1971 | } |