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e23eba97 | 1 | /* RISC-V-specific support for ELF. |
219d1afa | 2 | Copyright (C) 2011-2018 Free Software Foundation, Inc. |
e23eba97 NC |
3 | |
4 | Contributed by Andrew Waterman (andrew@sifive.com). | |
5 | Based on TILE-Gx and MIPS targets. | |
6 | ||
7 | This file is part of BFD, the Binary File Descriptor library. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; see the file COPYING3. If not, | |
21 | see <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | #include "sysdep.h" | |
24 | #include "bfd.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/riscv.h" | |
28 | #include "opcode/riscv.h" | |
29 | #include "libiberty.h" | |
30 | #include "elfxx-riscv.h" | |
31 | #include <stdint.h> | |
32 | ||
33 | #define MINUS_ONE ((bfd_vma)0 - 1) | |
34 | ||
57593436 KLC |
35 | /* Special handler for ADD/SUB relocations that allows them to be filled out |
36 | both in the pre-linked and post-linked file. This is necessary to make | |
37 | pre-linked debug info work, as due to linker relaxations we need to emit | |
38 | relocations for the debug info. */ | |
39 | static bfd_reloc_status_type riscv_elf_add_sub_reloc | |
40 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
41 | ||
e23eba97 NC |
42 | /* The relocation table used for SHT_RELA sections. */ |
43 | ||
44 | static reloc_howto_type howto_table[] = | |
45 | { | |
46 | /* No relocation. */ | |
47 | HOWTO (R_RISCV_NONE, /* type */ | |
48 | 0, /* rightshift */ | |
49 | 3, /* size */ | |
50 | 0, /* bitsize */ | |
51 | FALSE, /* pc_relative */ | |
52 | 0, /* bitpos */ | |
53 | complain_overflow_dont, /* complain_on_overflow */ | |
54 | bfd_elf_generic_reloc, /* special_function */ | |
55 | "R_RISCV_NONE", /* name */ | |
56 | FALSE, /* partial_inplace */ | |
57 | 0, /* src_mask */ | |
58 | 0, /* dst_mask */ | |
59 | FALSE), /* pcrel_offset */ | |
60 | ||
61 | /* 32 bit relocation. */ | |
62 | HOWTO (R_RISCV_32, /* type */ | |
63 | 0, /* rightshift */ | |
64 | 2, /* size */ | |
65 | 32, /* bitsize */ | |
66 | FALSE, /* pc_relative */ | |
67 | 0, /* bitpos */ | |
68 | complain_overflow_dont, /* complain_on_overflow */ | |
69 | bfd_elf_generic_reloc, /* special_function */ | |
70 | "R_RISCV_32", /* name */ | |
71 | FALSE, /* partial_inplace */ | |
72 | 0, /* src_mask */ | |
1d65abb5 | 73 | MINUS_ONE, /* dst_mask */ |
e23eba97 NC |
74 | FALSE), /* pcrel_offset */ |
75 | ||
76 | /* 64 bit relocation. */ | |
77 | HOWTO (R_RISCV_64, /* type */ | |
78 | 0, /* rightshift */ | |
79 | 4, /* size */ | |
80 | 64, /* bitsize */ | |
81 | FALSE, /* pc_relative */ | |
82 | 0, /* bitpos */ | |
83 | complain_overflow_dont, /* complain_on_overflow */ | |
84 | bfd_elf_generic_reloc, /* special_function */ | |
85 | "R_RISCV_64", /* name */ | |
86 | FALSE, /* partial_inplace */ | |
87 | 0, /* src_mask */ | |
88 | MINUS_ONE, /* dst_mask */ | |
89 | FALSE), /* pcrel_offset */ | |
90 | ||
91 | /* Relocation against a local symbol in a shared object. */ | |
92 | HOWTO (R_RISCV_RELATIVE, /* type */ | |
93 | 0, /* rightshift */ | |
94 | 2, /* size */ | |
95 | 32, /* bitsize */ | |
96 | FALSE, /* pc_relative */ | |
97 | 0, /* bitpos */ | |
98 | complain_overflow_dont, /* complain_on_overflow */ | |
99 | bfd_elf_generic_reloc, /* special_function */ | |
100 | "R_RISCV_RELATIVE", /* name */ | |
101 | FALSE, /* partial_inplace */ | |
102 | 0, /* src_mask */ | |
1d65abb5 | 103 | MINUS_ONE, /* dst_mask */ |
e23eba97 NC |
104 | FALSE), /* pcrel_offset */ |
105 | ||
106 | HOWTO (R_RISCV_COPY, /* type */ | |
107 | 0, /* rightshift */ | |
108 | 0, /* this one is variable size */ | |
109 | 0, /* bitsize */ | |
110 | FALSE, /* pc_relative */ | |
111 | 0, /* bitpos */ | |
112 | complain_overflow_bitfield, /* complain_on_overflow */ | |
113 | bfd_elf_generic_reloc, /* special_function */ | |
114 | "R_RISCV_COPY", /* name */ | |
115 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
116 | 0, /* src_mask */ |
117 | 0, /* dst_mask */ | |
e23eba97 NC |
118 | FALSE), /* pcrel_offset */ |
119 | ||
120 | HOWTO (R_RISCV_JUMP_SLOT, /* type */ | |
121 | 0, /* rightshift */ | |
122 | 4, /* size */ | |
123 | 64, /* bitsize */ | |
124 | FALSE, /* pc_relative */ | |
125 | 0, /* bitpos */ | |
126 | complain_overflow_bitfield, /* complain_on_overflow */ | |
127 | bfd_elf_generic_reloc, /* special_function */ | |
128 | "R_RISCV_JUMP_SLOT", /* name */ | |
129 | FALSE, /* partial_inplace */ | |
07d6d2b8 AM |
130 | 0, /* src_mask */ |
131 | 0, /* dst_mask */ | |
e23eba97 NC |
132 | FALSE), /* pcrel_offset */ |
133 | ||
134 | /* Dynamic TLS relocations. */ | |
135 | HOWTO (R_RISCV_TLS_DTPMOD32, /* type */ | |
136 | 0, /* rightshift */ | |
137 | 4, /* size */ | |
138 | 32, /* bitsize */ | |
139 | FALSE, /* pc_relative */ | |
140 | 0, /* bitpos */ | |
141 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 142 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
143 | "R_RISCV_TLS_DTPMOD32", /* name */ |
144 | FALSE, /* partial_inplace */ | |
1d65abb5 | 145 | 0, /* src_mask */ |
e23eba97 NC |
146 | MINUS_ONE, /* dst_mask */ |
147 | FALSE), /* pcrel_offset */ | |
148 | ||
149 | HOWTO (R_RISCV_TLS_DTPMOD64, /* type */ | |
150 | 0, /* rightshift */ | |
151 | 4, /* size */ | |
152 | 64, /* bitsize */ | |
153 | FALSE, /* pc_relative */ | |
154 | 0, /* bitpos */ | |
155 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 156 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
157 | "R_RISCV_TLS_DTPMOD64", /* name */ |
158 | FALSE, /* partial_inplace */ | |
1d65abb5 | 159 | 0, /* src_mask */ |
e23eba97 NC |
160 | MINUS_ONE, /* dst_mask */ |
161 | FALSE), /* pcrel_offset */ | |
162 | ||
163 | HOWTO (R_RISCV_TLS_DTPREL32, /* type */ | |
164 | 0, /* rightshift */ | |
165 | 4, /* size */ | |
166 | 32, /* bitsize */ | |
167 | FALSE, /* pc_relative */ | |
168 | 0, /* bitpos */ | |
169 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 170 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
171 | "R_RISCV_TLS_DTPREL32", /* name */ |
172 | TRUE, /* partial_inplace */ | |
1d65abb5 | 173 | 0, /* src_mask */ |
e23eba97 NC |
174 | MINUS_ONE, /* dst_mask */ |
175 | FALSE), /* pcrel_offset */ | |
176 | ||
177 | HOWTO (R_RISCV_TLS_DTPREL64, /* type */ | |
178 | 0, /* rightshift */ | |
179 | 4, /* size */ | |
180 | 64, /* bitsize */ | |
181 | FALSE, /* pc_relative */ | |
182 | 0, /* bitpos */ | |
183 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 184 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
185 | "R_RISCV_TLS_DTPREL64", /* name */ |
186 | TRUE, /* partial_inplace */ | |
1d65abb5 | 187 | 0, /* src_mask */ |
e23eba97 NC |
188 | MINUS_ONE, /* dst_mask */ |
189 | FALSE), /* pcrel_offset */ | |
190 | ||
191 | HOWTO (R_RISCV_TLS_TPREL32, /* type */ | |
192 | 0, /* rightshift */ | |
193 | 2, /* size */ | |
194 | 32, /* bitsize */ | |
195 | FALSE, /* pc_relative */ | |
196 | 0, /* bitpos */ | |
197 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 198 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
199 | "R_RISCV_TLS_TPREL32", /* name */ |
200 | FALSE, /* partial_inplace */ | |
1d65abb5 | 201 | 0, /* src_mask */ |
e23eba97 NC |
202 | MINUS_ONE, /* dst_mask */ |
203 | FALSE), /* pcrel_offset */ | |
204 | ||
205 | HOWTO (R_RISCV_TLS_TPREL64, /* type */ | |
206 | 0, /* rightshift */ | |
207 | 4, /* size */ | |
208 | 64, /* bitsize */ | |
209 | FALSE, /* pc_relative */ | |
210 | 0, /* bitpos */ | |
211 | complain_overflow_dont, /* complain_on_overflow */ | |
07d6d2b8 | 212 | bfd_elf_generic_reloc, /* special_function */ |
e23eba97 NC |
213 | "R_RISCV_TLS_TPREL64", /* name */ |
214 | FALSE, /* partial_inplace */ | |
1d65abb5 | 215 | 0, /* src_mask */ |
e23eba97 NC |
216 | MINUS_ONE, /* dst_mask */ |
217 | FALSE), /* pcrel_offset */ | |
218 | ||
219 | /* Reserved for future relocs that the dynamic linker must understand. */ | |
220 | EMPTY_HOWTO (12), | |
221 | EMPTY_HOWTO (13), | |
222 | EMPTY_HOWTO (14), | |
223 | EMPTY_HOWTO (15), | |
224 | ||
225 | /* 12-bit PC-relative branch offset. */ | |
226 | HOWTO (R_RISCV_BRANCH, /* type */ | |
227 | 0, /* rightshift */ | |
228 | 2, /* size */ | |
229 | 32, /* bitsize */ | |
230 | TRUE, /* pc_relative */ | |
231 | 0, /* bitpos */ | |
232 | complain_overflow_signed, /* complain_on_overflow */ | |
233 | bfd_elf_generic_reloc, /* special_function */ | |
234 | "R_RISCV_BRANCH", /* name */ | |
235 | FALSE, /* partial_inplace */ | |
236 | 0, /* src_mask */ | |
237 | ENCODE_SBTYPE_IMM (-1U), /* dst_mask */ | |
238 | TRUE), /* pcrel_offset */ | |
239 | ||
240 | /* 20-bit PC-relative jump offset. */ | |
241 | HOWTO (R_RISCV_JAL, /* type */ | |
242 | 0, /* rightshift */ | |
243 | 2, /* size */ | |
244 | 32, /* bitsize */ | |
245 | TRUE, /* pc_relative */ | |
246 | 0, /* bitpos */ | |
247 | complain_overflow_dont, /* complain_on_overflow */ | |
e23eba97 NC |
248 | bfd_elf_generic_reloc, /* special_function */ |
249 | "R_RISCV_JAL", /* name */ | |
250 | FALSE, /* partial_inplace */ | |
251 | 0, /* src_mask */ | |
252 | ENCODE_UJTYPE_IMM (-1U), /* dst_mask */ | |
253 | TRUE), /* pcrel_offset */ | |
254 | ||
255 | /* 32-bit PC-relative function call (AUIPC/JALR). */ | |
256 | HOWTO (R_RISCV_CALL, /* type */ | |
257 | 0, /* rightshift */ | |
258 | 2, /* size */ | |
259 | 64, /* bitsize */ | |
260 | TRUE, /* pc_relative */ | |
261 | 0, /* bitpos */ | |
262 | complain_overflow_dont, /* complain_on_overflow */ | |
263 | bfd_elf_generic_reloc, /* special_function */ | |
264 | "R_RISCV_CALL", /* name */ | |
265 | FALSE, /* partial_inplace */ | |
266 | 0, /* src_mask */ | |
267 | ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32), | |
268 | /* dst_mask */ | |
269 | TRUE), /* pcrel_offset */ | |
270 | ||
1d65abb5 | 271 | /* Like R_RISCV_CALL, but not locally binding. */ |
e23eba97 NC |
272 | HOWTO (R_RISCV_CALL_PLT, /* type */ |
273 | 0, /* rightshift */ | |
274 | 2, /* size */ | |
275 | 64, /* bitsize */ | |
276 | TRUE, /* pc_relative */ | |
277 | 0, /* bitpos */ | |
278 | complain_overflow_dont, /* complain_on_overflow */ | |
279 | bfd_elf_generic_reloc, /* special_function */ | |
280 | "R_RISCV_CALL_PLT", /* name */ | |
281 | FALSE, /* partial_inplace */ | |
282 | 0, /* src_mask */ | |
283 | ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32), | |
284 | /* dst_mask */ | |
285 | TRUE), /* pcrel_offset */ | |
286 | ||
287 | /* High 20 bits of 32-bit PC-relative GOT access. */ | |
288 | HOWTO (R_RISCV_GOT_HI20, /* type */ | |
289 | 0, /* rightshift */ | |
290 | 2, /* size */ | |
291 | 32, /* bitsize */ | |
292 | TRUE, /* pc_relative */ | |
293 | 0, /* bitpos */ | |
294 | complain_overflow_dont, /* complain_on_overflow */ | |
295 | bfd_elf_generic_reloc, /* special_function */ | |
296 | "R_RISCV_GOT_HI20", /* name */ | |
297 | FALSE, /* partial_inplace */ | |
298 | 0, /* src_mask */ | |
299 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
300 | FALSE), /* pcrel_offset */ | |
301 | ||
302 | /* High 20 bits of 32-bit PC-relative TLS IE GOT access. */ | |
303 | HOWTO (R_RISCV_TLS_GOT_HI20, /* type */ | |
304 | 0, /* rightshift */ | |
305 | 2, /* size */ | |
306 | 32, /* bitsize */ | |
307 | TRUE, /* pc_relative */ | |
308 | 0, /* bitpos */ | |
309 | complain_overflow_dont, /* complain_on_overflow */ | |
310 | bfd_elf_generic_reloc, /* special_function */ | |
311 | "R_RISCV_TLS_GOT_HI20", /* name */ | |
312 | FALSE, /* partial_inplace */ | |
313 | 0, /* src_mask */ | |
314 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
315 | FALSE), /* pcrel_offset */ | |
316 | ||
317 | /* High 20 bits of 32-bit PC-relative TLS GD GOT reference. */ | |
318 | HOWTO (R_RISCV_TLS_GD_HI20, /* type */ | |
319 | 0, /* rightshift */ | |
320 | 2, /* size */ | |
321 | 32, /* bitsize */ | |
322 | TRUE, /* pc_relative */ | |
323 | 0, /* bitpos */ | |
324 | complain_overflow_dont, /* complain_on_overflow */ | |
325 | bfd_elf_generic_reloc, /* special_function */ | |
326 | "R_RISCV_TLS_GD_HI20", /* name */ | |
327 | FALSE, /* partial_inplace */ | |
328 | 0, /* src_mask */ | |
329 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
330 | FALSE), /* pcrel_offset */ | |
331 | ||
332 | /* High 20 bits of 32-bit PC-relative reference. */ | |
333 | HOWTO (R_RISCV_PCREL_HI20, /* type */ | |
334 | 0, /* rightshift */ | |
335 | 2, /* size */ | |
336 | 32, /* bitsize */ | |
337 | TRUE, /* pc_relative */ | |
338 | 0, /* bitpos */ | |
339 | complain_overflow_dont, /* complain_on_overflow */ | |
340 | bfd_elf_generic_reloc, /* special_function */ | |
341 | "R_RISCV_PCREL_HI20", /* name */ | |
342 | FALSE, /* partial_inplace */ | |
343 | 0, /* src_mask */ | |
344 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
345 | TRUE), /* pcrel_offset */ | |
346 | ||
347 | /* Low 12 bits of a 32-bit PC-relative load or add. */ | |
348 | HOWTO (R_RISCV_PCREL_LO12_I, /* type */ | |
349 | 0, /* rightshift */ | |
350 | 2, /* size */ | |
351 | 32, /* bitsize */ | |
352 | FALSE, /* pc_relative */ | |
353 | 0, /* bitpos */ | |
354 | complain_overflow_dont, /* complain_on_overflow */ | |
355 | bfd_elf_generic_reloc, /* special_function */ | |
356 | "R_RISCV_PCREL_LO12_I", /* name */ | |
357 | FALSE, /* partial_inplace */ | |
358 | 0, /* src_mask */ | |
359 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
360 | FALSE), /* pcrel_offset */ | |
361 | ||
362 | /* Low 12 bits of a 32-bit PC-relative store. */ | |
363 | HOWTO (R_RISCV_PCREL_LO12_S, /* type */ | |
364 | 0, /* rightshift */ | |
365 | 2, /* size */ | |
366 | 32, /* bitsize */ | |
367 | FALSE, /* pc_relative */ | |
368 | 0, /* bitpos */ | |
369 | complain_overflow_dont, /* complain_on_overflow */ | |
370 | bfd_elf_generic_reloc, /* special_function */ | |
371 | "R_RISCV_PCREL_LO12_S", /* name */ | |
372 | FALSE, /* partial_inplace */ | |
373 | 0, /* src_mask */ | |
374 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
375 | FALSE), /* pcrel_offset */ | |
376 | ||
377 | /* High 20 bits of 32-bit absolute address. */ | |
378 | HOWTO (R_RISCV_HI20, /* type */ | |
379 | 0, /* rightshift */ | |
380 | 2, /* size */ | |
381 | 32, /* bitsize */ | |
382 | FALSE, /* pc_relative */ | |
383 | 0, /* bitpos */ | |
384 | complain_overflow_dont, /* complain_on_overflow */ | |
385 | bfd_elf_generic_reloc, /* special_function */ | |
386 | "R_RISCV_HI20", /* name */ | |
387 | FALSE, /* partial_inplace */ | |
388 | 0, /* src_mask */ | |
389 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
390 | FALSE), /* pcrel_offset */ | |
391 | ||
392 | /* High 12 bits of 32-bit load or add. */ | |
393 | HOWTO (R_RISCV_LO12_I, /* type */ | |
394 | 0, /* rightshift */ | |
395 | 2, /* size */ | |
396 | 32, /* bitsize */ | |
397 | FALSE, /* pc_relative */ | |
398 | 0, /* bitpos */ | |
399 | complain_overflow_dont, /* complain_on_overflow */ | |
400 | bfd_elf_generic_reloc, /* special_function */ | |
401 | "R_RISCV_LO12_I", /* name */ | |
402 | FALSE, /* partial_inplace */ | |
403 | 0, /* src_mask */ | |
404 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
405 | FALSE), /* pcrel_offset */ | |
406 | ||
407 | /* High 12 bits of 32-bit store. */ | |
408 | HOWTO (R_RISCV_LO12_S, /* type */ | |
409 | 0, /* rightshift */ | |
410 | 2, /* size */ | |
411 | 32, /* bitsize */ | |
412 | FALSE, /* pc_relative */ | |
413 | 0, /* bitpos */ | |
414 | complain_overflow_dont, /* complain_on_overflow */ | |
415 | bfd_elf_generic_reloc, /* special_function */ | |
416 | "R_RISCV_LO12_S", /* name */ | |
417 | FALSE, /* partial_inplace */ | |
418 | 0, /* src_mask */ | |
419 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
420 | FALSE), /* pcrel_offset */ | |
421 | ||
422 | /* High 20 bits of TLS LE thread pointer offset. */ | |
423 | HOWTO (R_RISCV_TPREL_HI20, /* type */ | |
424 | 0, /* rightshift */ | |
425 | 2, /* size */ | |
426 | 32, /* bitsize */ | |
427 | FALSE, /* pc_relative */ | |
428 | 0, /* bitpos */ | |
429 | complain_overflow_signed, /* complain_on_overflow */ | |
430 | bfd_elf_generic_reloc, /* special_function */ | |
431 | "R_RISCV_TPREL_HI20", /* name */ | |
432 | TRUE, /* partial_inplace */ | |
433 | 0, /* src_mask */ | |
434 | ENCODE_UTYPE_IMM (-1U), /* dst_mask */ | |
435 | FALSE), /* pcrel_offset */ | |
436 | ||
437 | /* Low 12 bits of TLS LE thread pointer offset for loads and adds. */ | |
438 | HOWTO (R_RISCV_TPREL_LO12_I, /* type */ | |
439 | 0, /* rightshift */ | |
440 | 2, /* size */ | |
441 | 32, /* bitsize */ | |
442 | FALSE, /* pc_relative */ | |
443 | 0, /* bitpos */ | |
444 | complain_overflow_signed, /* complain_on_overflow */ | |
445 | bfd_elf_generic_reloc, /* special_function */ | |
446 | "R_RISCV_TPREL_LO12_I", /* name */ | |
447 | FALSE, /* partial_inplace */ | |
448 | 0, /* src_mask */ | |
449 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
450 | FALSE), /* pcrel_offset */ | |
451 | ||
452 | /* Low 12 bits of TLS LE thread pointer offset for stores. */ | |
453 | HOWTO (R_RISCV_TPREL_LO12_S, /* type */ | |
454 | 0, /* rightshift */ | |
455 | 2, /* size */ | |
456 | 32, /* bitsize */ | |
457 | FALSE, /* pc_relative */ | |
458 | 0, /* bitpos */ | |
459 | complain_overflow_signed, /* complain_on_overflow */ | |
460 | bfd_elf_generic_reloc, /* special_function */ | |
461 | "R_RISCV_TPREL_LO12_S", /* name */ | |
462 | FALSE, /* partial_inplace */ | |
463 | 0, /* src_mask */ | |
464 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
465 | FALSE), /* pcrel_offset */ | |
466 | ||
1d65abb5 | 467 | /* TLS LE thread pointer usage. May be relaxed. */ |
e23eba97 NC |
468 | HOWTO (R_RISCV_TPREL_ADD, /* type */ |
469 | 0, /* rightshift */ | |
470 | 2, /* size */ | |
471 | 32, /* bitsize */ | |
472 | FALSE, /* pc_relative */ | |
473 | 0, /* bitpos */ | |
474 | complain_overflow_dont, /* complain_on_overflow */ | |
475 | bfd_elf_generic_reloc, /* special_function */ | |
476 | "R_RISCV_TPREL_ADD", /* name */ | |
477 | TRUE, /* partial_inplace */ | |
478 | 0, /* src_mask */ | |
479 | 0, /* dst_mask */ | |
480 | FALSE), /* pcrel_offset */ | |
481 | ||
482 | /* 8-bit in-place addition, for local label subtraction. */ | |
483 | HOWTO (R_RISCV_ADD8, /* type */ | |
484 | 0, /* rightshift */ | |
485 | 0, /* size */ | |
0b14696a | 486 | 8, /* bitsize */ |
e23eba97 NC |
487 | FALSE, /* pc_relative */ |
488 | 0, /* bitpos */ | |
489 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 490 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
491 | "R_RISCV_ADD8", /* name */ |
492 | FALSE, /* partial_inplace */ | |
493 | 0, /* src_mask */ | |
494 | MINUS_ONE, /* dst_mask */ | |
495 | FALSE), /* pcrel_offset */ | |
496 | ||
497 | /* 16-bit in-place addition, for local label subtraction. */ | |
498 | HOWTO (R_RISCV_ADD16, /* type */ | |
499 | 0, /* rightshift */ | |
500 | 1, /* size */ | |
501 | 16, /* bitsize */ | |
502 | FALSE, /* pc_relative */ | |
503 | 0, /* bitpos */ | |
504 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 505 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
506 | "R_RISCV_ADD16", /* name */ |
507 | FALSE, /* partial_inplace */ | |
508 | 0, /* src_mask */ | |
509 | MINUS_ONE, /* dst_mask */ | |
510 | FALSE), /* pcrel_offset */ | |
511 | ||
512 | /* 32-bit in-place addition, for local label subtraction. */ | |
513 | HOWTO (R_RISCV_ADD32, /* type */ | |
514 | 0, /* rightshift */ | |
515 | 2, /* size */ | |
516 | 32, /* bitsize */ | |
517 | FALSE, /* pc_relative */ | |
518 | 0, /* bitpos */ | |
519 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 520 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
521 | "R_RISCV_ADD32", /* name */ |
522 | FALSE, /* partial_inplace */ | |
523 | 0, /* src_mask */ | |
524 | MINUS_ONE, /* dst_mask */ | |
525 | FALSE), /* pcrel_offset */ | |
526 | ||
527 | /* 64-bit in-place addition, for local label subtraction. */ | |
528 | HOWTO (R_RISCV_ADD64, /* type */ | |
529 | 0, /* rightshift */ | |
530 | 4, /* size */ | |
531 | 64, /* bitsize */ | |
532 | FALSE, /* pc_relative */ | |
533 | 0, /* bitpos */ | |
534 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 535 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
536 | "R_RISCV_ADD64", /* name */ |
537 | FALSE, /* partial_inplace */ | |
538 | 0, /* src_mask */ | |
539 | MINUS_ONE, /* dst_mask */ | |
540 | FALSE), /* pcrel_offset */ | |
541 | ||
542 | /* 8-bit in-place addition, for local label subtraction. */ | |
543 | HOWTO (R_RISCV_SUB8, /* type */ | |
544 | 0, /* rightshift */ | |
545 | 0, /* size */ | |
546 | 8, /* bitsize */ | |
547 | FALSE, /* pc_relative */ | |
548 | 0, /* bitpos */ | |
549 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 550 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
551 | "R_RISCV_SUB8", /* name */ |
552 | FALSE, /* partial_inplace */ | |
553 | 0, /* src_mask */ | |
554 | MINUS_ONE, /* dst_mask */ | |
555 | FALSE), /* pcrel_offset */ | |
556 | ||
557 | /* 16-bit in-place addition, for local label subtraction. */ | |
558 | HOWTO (R_RISCV_SUB16, /* type */ | |
559 | 0, /* rightshift */ | |
560 | 1, /* size */ | |
561 | 16, /* bitsize */ | |
562 | FALSE, /* pc_relative */ | |
563 | 0, /* bitpos */ | |
564 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 565 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
566 | "R_RISCV_SUB16", /* name */ |
567 | FALSE, /* partial_inplace */ | |
568 | 0, /* src_mask */ | |
569 | MINUS_ONE, /* dst_mask */ | |
570 | FALSE), /* pcrel_offset */ | |
571 | ||
572 | /* 32-bit in-place addition, for local label subtraction. */ | |
573 | HOWTO (R_RISCV_SUB32, /* type */ | |
574 | 0, /* rightshift */ | |
575 | 2, /* size */ | |
576 | 32, /* bitsize */ | |
577 | FALSE, /* pc_relative */ | |
578 | 0, /* bitpos */ | |
579 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 580 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
581 | "R_RISCV_SUB32", /* name */ |
582 | FALSE, /* partial_inplace */ | |
583 | 0, /* src_mask */ | |
584 | MINUS_ONE, /* dst_mask */ | |
585 | FALSE), /* pcrel_offset */ | |
586 | ||
587 | /* 64-bit in-place addition, for local label subtraction. */ | |
588 | HOWTO (R_RISCV_SUB64, /* type */ | |
589 | 0, /* rightshift */ | |
590 | 4, /* size */ | |
591 | 64, /* bitsize */ | |
592 | FALSE, /* pc_relative */ | |
593 | 0, /* bitpos */ | |
594 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 595 | riscv_elf_add_sub_reloc, /* special_function */ |
e23eba97 NC |
596 | "R_RISCV_SUB64", /* name */ |
597 | FALSE, /* partial_inplace */ | |
598 | 0, /* src_mask */ | |
599 | MINUS_ONE, /* dst_mask */ | |
600 | FALSE), /* pcrel_offset */ | |
601 | ||
602 | /* GNU extension to record C++ vtable hierarchy */ | |
603 | HOWTO (R_RISCV_GNU_VTINHERIT, /* type */ | |
604 | 0, /* rightshift */ | |
605 | 4, /* size */ | |
606 | 0, /* bitsize */ | |
607 | FALSE, /* pc_relative */ | |
608 | 0, /* bitpos */ | |
609 | complain_overflow_dont, /* complain_on_overflow */ | |
610 | NULL, /* special_function */ | |
611 | "R_RISCV_GNU_VTINHERIT", /* name */ | |
612 | FALSE, /* partial_inplace */ | |
613 | 0, /* src_mask */ | |
614 | 0, /* dst_mask */ | |
615 | FALSE), /* pcrel_offset */ | |
616 | ||
617 | /* GNU extension to record C++ vtable member usage */ | |
618 | HOWTO (R_RISCV_GNU_VTENTRY, /* type */ | |
619 | 0, /* rightshift */ | |
620 | 4, /* size */ | |
621 | 0, /* bitsize */ | |
622 | FALSE, /* pc_relative */ | |
623 | 0, /* bitpos */ | |
624 | complain_overflow_dont, /* complain_on_overflow */ | |
625 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
626 | "R_RISCV_GNU_VTENTRY", /* name */ | |
627 | FALSE, /* partial_inplace */ | |
628 | 0, /* src_mask */ | |
629 | 0, /* dst_mask */ | |
630 | FALSE), /* pcrel_offset */ | |
631 | ||
632 | /* Indicates an alignment statement. The addend field encodes how many | |
633 | bytes of NOPs follow the statement. The desired alignment is the | |
634 | addend rounded up to the next power of two. */ | |
635 | HOWTO (R_RISCV_ALIGN, /* type */ | |
636 | 0, /* rightshift */ | |
637 | 2, /* size */ | |
638 | 0, /* bitsize */ | |
639 | FALSE, /* pc_relative */ | |
640 | 0, /* bitpos */ | |
641 | complain_overflow_dont, /* complain_on_overflow */ | |
642 | bfd_elf_generic_reloc, /* special_function */ | |
643 | "R_RISCV_ALIGN", /* name */ | |
644 | FALSE, /* partial_inplace */ | |
645 | 0, /* src_mask */ | |
646 | 0, /* dst_mask */ | |
647 | TRUE), /* pcrel_offset */ | |
648 | ||
649 | /* 8-bit PC-relative branch offset. */ | |
650 | HOWTO (R_RISCV_RVC_BRANCH, /* type */ | |
651 | 0, /* rightshift */ | |
652 | 2, /* size */ | |
653 | 32, /* bitsize */ | |
654 | TRUE, /* pc_relative */ | |
655 | 0, /* bitpos */ | |
656 | complain_overflow_signed, /* complain_on_overflow */ | |
657 | bfd_elf_generic_reloc, /* special_function */ | |
658 | "R_RISCV_RVC_BRANCH", /* name */ | |
659 | FALSE, /* partial_inplace */ | |
660 | 0, /* src_mask */ | |
661 | ENCODE_RVC_B_IMM (-1U), /* dst_mask */ | |
662 | TRUE), /* pcrel_offset */ | |
663 | ||
664 | /* 11-bit PC-relative jump offset. */ | |
665 | HOWTO (R_RISCV_RVC_JUMP, /* type */ | |
666 | 0, /* rightshift */ | |
667 | 2, /* size */ | |
668 | 32, /* bitsize */ | |
669 | TRUE, /* pc_relative */ | |
670 | 0, /* bitpos */ | |
671 | complain_overflow_dont, /* complain_on_overflow */ | |
e23eba97 NC |
672 | bfd_elf_generic_reloc, /* special_function */ |
673 | "R_RISCV_RVC_JUMP", /* name */ | |
674 | FALSE, /* partial_inplace */ | |
675 | 0, /* src_mask */ | |
676 | ENCODE_RVC_J_IMM (-1U), /* dst_mask */ | |
677 | TRUE), /* pcrel_offset */ | |
678 | ||
679 | /* High 6 bits of 18-bit absolute address. */ | |
680 | HOWTO (R_RISCV_RVC_LUI, /* type */ | |
681 | 0, /* rightshift */ | |
682 | 2, /* size */ | |
683 | 32, /* bitsize */ | |
684 | FALSE, /* pc_relative */ | |
685 | 0, /* bitpos */ | |
686 | complain_overflow_dont, /* complain_on_overflow */ | |
687 | bfd_elf_generic_reloc, /* special_function */ | |
688 | "R_RISCV_RVC_LUI", /* name */ | |
689 | FALSE, /* partial_inplace */ | |
690 | 0, /* src_mask */ | |
691 | ENCODE_RVC_IMM (-1U), /* dst_mask */ | |
692 | FALSE), /* pcrel_offset */ | |
693 | ||
1d65abb5 | 694 | /* GP-relative load. */ |
e23eba97 NC |
695 | HOWTO (R_RISCV_GPREL_I, /* type */ |
696 | 0, /* rightshift */ | |
697 | 2, /* size */ | |
698 | 32, /* bitsize */ | |
699 | FALSE, /* pc_relative */ | |
700 | 0, /* bitpos */ | |
701 | complain_overflow_dont, /* complain_on_overflow */ | |
702 | bfd_elf_generic_reloc, /* special_function */ | |
703 | "R_RISCV_GPREL_I", /* name */ | |
704 | FALSE, /* partial_inplace */ | |
705 | 0, /* src_mask */ | |
706 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
707 | FALSE), /* pcrel_offset */ | |
708 | ||
1d65abb5 | 709 | /* GP-relative store. */ |
e23eba97 NC |
710 | HOWTO (R_RISCV_GPREL_S, /* type */ |
711 | 0, /* rightshift */ | |
712 | 2, /* size */ | |
713 | 32, /* bitsize */ | |
714 | FALSE, /* pc_relative */ | |
715 | 0, /* bitpos */ | |
716 | complain_overflow_dont, /* complain_on_overflow */ | |
717 | bfd_elf_generic_reloc, /* special_function */ | |
718 | "R_RISCV_GPREL_S", /* name */ | |
719 | FALSE, /* partial_inplace */ | |
720 | 0, /* src_mask */ | |
721 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
722 | FALSE), /* pcrel_offset */ | |
45f76423 AW |
723 | |
724 | /* TP-relative TLS LE load. */ | |
725 | HOWTO (R_RISCV_TPREL_I, /* type */ | |
726 | 0, /* rightshift */ | |
727 | 2, /* size */ | |
728 | 32, /* bitsize */ | |
729 | FALSE, /* pc_relative */ | |
730 | 0, /* bitpos */ | |
731 | complain_overflow_signed, /* complain_on_overflow */ | |
732 | bfd_elf_generic_reloc, /* special_function */ | |
733 | "R_RISCV_TPREL_I", /* name */ | |
734 | FALSE, /* partial_inplace */ | |
735 | 0, /* src_mask */ | |
736 | ENCODE_ITYPE_IMM (-1U), /* dst_mask */ | |
737 | FALSE), /* pcrel_offset */ | |
738 | ||
739 | /* TP-relative TLS LE store. */ | |
740 | HOWTO (R_RISCV_TPREL_S, /* type */ | |
741 | 0, /* rightshift */ | |
742 | 2, /* size */ | |
743 | 32, /* bitsize */ | |
744 | FALSE, /* pc_relative */ | |
745 | 0, /* bitpos */ | |
746 | complain_overflow_signed, /* complain_on_overflow */ | |
747 | bfd_elf_generic_reloc, /* special_function */ | |
748 | "R_RISCV_TPREL_S", /* name */ | |
749 | FALSE, /* partial_inplace */ | |
750 | 0, /* src_mask */ | |
751 | ENCODE_STYPE_IMM (-1U), /* dst_mask */ | |
752 | FALSE), /* pcrel_offset */ | |
753 | ||
754 | /* The paired relocation may be relaxed. */ | |
755 | HOWTO (R_RISCV_RELAX, /* type */ | |
756 | 0, /* rightshift */ | |
757 | 3, /* size */ | |
758 | 0, /* bitsize */ | |
759 | FALSE, /* pc_relative */ | |
760 | 0, /* bitpos */ | |
761 | complain_overflow_dont, /* complain_on_overflow */ | |
762 | bfd_elf_generic_reloc, /* special_function */ | |
763 | "R_RISCV_RELAX", /* name */ | |
764 | FALSE, /* partial_inplace */ | |
765 | 0, /* src_mask */ | |
766 | 0, /* dst_mask */ | |
767 | FALSE), /* pcrel_offset */ | |
768 | ||
769 | /* 6-bit in-place addition, for local label subtraction. */ | |
770 | HOWTO (R_RISCV_SUB6, /* type */ | |
771 | 0, /* rightshift */ | |
772 | 0, /* size */ | |
773 | 8, /* bitsize */ | |
774 | FALSE, /* pc_relative */ | |
775 | 0, /* bitpos */ | |
776 | complain_overflow_dont, /* complain_on_overflow */ | |
57593436 | 777 | riscv_elf_add_sub_reloc, /* special_function */ |
45f76423 AW |
778 | "R_RISCV_SUB6", /* name */ |
779 | FALSE, /* partial_inplace */ | |
780 | 0, /* src_mask */ | |
781 | 0x3f, /* dst_mask */ | |
782 | FALSE), /* pcrel_offset */ | |
783 | ||
784 | /* 6-bit in-place setting, for local label subtraction. */ | |
785 | HOWTO (R_RISCV_SET6, /* type */ | |
786 | 0, /* rightshift */ | |
787 | 0, /* size */ | |
788 | 8, /* bitsize */ | |
789 | FALSE, /* pc_relative */ | |
790 | 0, /* bitpos */ | |
791 | complain_overflow_dont, /* complain_on_overflow */ | |
792 | bfd_elf_generic_reloc, /* special_function */ | |
793 | "R_RISCV_SET6", /* name */ | |
794 | FALSE, /* partial_inplace */ | |
795 | 0, /* src_mask */ | |
796 | 0x3f, /* dst_mask */ | |
797 | FALSE), /* pcrel_offset */ | |
798 | ||
799 | /* 8-bit in-place setting, for local label subtraction. */ | |
800 | HOWTO (R_RISCV_SET8, /* type */ | |
801 | 0, /* rightshift */ | |
802 | 0, /* size */ | |
803 | 8, /* bitsize */ | |
804 | FALSE, /* pc_relative */ | |
805 | 0, /* bitpos */ | |
806 | complain_overflow_dont, /* complain_on_overflow */ | |
807 | bfd_elf_generic_reloc, /* special_function */ | |
808 | "R_RISCV_SET8", /* name */ | |
809 | FALSE, /* partial_inplace */ | |
810 | 0, /* src_mask */ | |
811 | MINUS_ONE, /* dst_mask */ | |
812 | FALSE), /* pcrel_offset */ | |
813 | ||
814 | /* 16-bit in-place setting, for local label subtraction. */ | |
815 | HOWTO (R_RISCV_SET16, /* type */ | |
816 | 0, /* rightshift */ | |
817 | 1, /* size */ | |
818 | 16, /* bitsize */ | |
819 | FALSE, /* pc_relative */ | |
820 | 0, /* bitpos */ | |
821 | complain_overflow_dont, /* complain_on_overflow */ | |
822 | bfd_elf_generic_reloc, /* special_function */ | |
823 | "R_RISCV_SET16", /* name */ | |
824 | FALSE, /* partial_inplace */ | |
825 | 0, /* src_mask */ | |
826 | MINUS_ONE, /* dst_mask */ | |
827 | FALSE), /* pcrel_offset */ | |
828 | ||
829 | /* 32-bit in-place setting, for local label subtraction. */ | |
830 | HOWTO (R_RISCV_SET32, /* type */ | |
831 | 0, /* rightshift */ | |
832 | 2, /* size */ | |
833 | 32, /* bitsize */ | |
834 | FALSE, /* pc_relative */ | |
835 | 0, /* bitpos */ | |
836 | complain_overflow_dont, /* complain_on_overflow */ | |
837 | bfd_elf_generic_reloc, /* special_function */ | |
838 | "R_RISCV_SET32", /* name */ | |
839 | FALSE, /* partial_inplace */ | |
840 | 0, /* src_mask */ | |
841 | MINUS_ONE, /* dst_mask */ | |
842 | FALSE), /* pcrel_offset */ | |
a6cbf936 KLC |
843 | |
844 | /* 32-bit PC relative. */ | |
845 | HOWTO (R_RISCV_32_PCREL, /* type */ | |
846 | 0, /* rightshift */ | |
847 | 2, /* size */ | |
848 | 32, /* bitsize */ | |
849 | TRUE, /* pc_relative */ | |
850 | 0, /* bitpos */ | |
851 | complain_overflow_dont, /* complain_on_overflow */ | |
852 | bfd_elf_generic_reloc, /* special_function */ | |
853 | "R_RISCV_32_PCREL", /* name */ | |
854 | FALSE, /* partial_inplace */ | |
855 | 0, /* src_mask */ | |
856 | MINUS_ONE, /* dst_mask */ | |
857 | FALSE), /* pcrel_offset */ | |
e23eba97 NC |
858 | }; |
859 | ||
860 | /* A mapping from BFD reloc types to RISC-V ELF reloc types. */ | |
861 | ||
862 | struct elf_reloc_map | |
863 | { | |
864 | bfd_reloc_code_real_type bfd_val; | |
865 | enum elf_riscv_reloc_type elf_val; | |
866 | }; | |
867 | ||
868 | static const struct elf_reloc_map riscv_reloc_map[] = | |
869 | { | |
870 | { BFD_RELOC_NONE, R_RISCV_NONE }, | |
871 | { BFD_RELOC_32, R_RISCV_32 }, | |
872 | { BFD_RELOC_64, R_RISCV_64 }, | |
873 | { BFD_RELOC_RISCV_ADD8, R_RISCV_ADD8 }, | |
874 | { BFD_RELOC_RISCV_ADD16, R_RISCV_ADD16 }, | |
875 | { BFD_RELOC_RISCV_ADD32, R_RISCV_ADD32 }, | |
876 | { BFD_RELOC_RISCV_ADD64, R_RISCV_ADD64 }, | |
877 | { BFD_RELOC_RISCV_SUB8, R_RISCV_SUB8 }, | |
878 | { BFD_RELOC_RISCV_SUB16, R_RISCV_SUB16 }, | |
879 | { BFD_RELOC_RISCV_SUB32, R_RISCV_SUB32 }, | |
880 | { BFD_RELOC_RISCV_SUB64, R_RISCV_SUB64 }, | |
881 | { BFD_RELOC_CTOR, R_RISCV_64 }, | |
882 | { BFD_RELOC_12_PCREL, R_RISCV_BRANCH }, | |
883 | { BFD_RELOC_RISCV_HI20, R_RISCV_HI20 }, | |
884 | { BFD_RELOC_RISCV_LO12_I, R_RISCV_LO12_I }, | |
885 | { BFD_RELOC_RISCV_LO12_S, R_RISCV_LO12_S }, | |
886 | { BFD_RELOC_RISCV_PCREL_LO12_I, R_RISCV_PCREL_LO12_I }, | |
887 | { BFD_RELOC_RISCV_PCREL_LO12_S, R_RISCV_PCREL_LO12_S }, | |
888 | { BFD_RELOC_RISCV_CALL, R_RISCV_CALL }, | |
889 | { BFD_RELOC_RISCV_CALL_PLT, R_RISCV_CALL_PLT }, | |
890 | { BFD_RELOC_RISCV_PCREL_HI20, R_RISCV_PCREL_HI20 }, | |
891 | { BFD_RELOC_RISCV_JMP, R_RISCV_JAL }, | |
892 | { BFD_RELOC_RISCV_GOT_HI20, R_RISCV_GOT_HI20 }, | |
893 | { BFD_RELOC_RISCV_TLS_DTPMOD32, R_RISCV_TLS_DTPMOD32 }, | |
894 | { BFD_RELOC_RISCV_TLS_DTPREL32, R_RISCV_TLS_DTPREL32 }, | |
895 | { BFD_RELOC_RISCV_TLS_DTPMOD64, R_RISCV_TLS_DTPMOD64 }, | |
896 | { BFD_RELOC_RISCV_TLS_DTPREL64, R_RISCV_TLS_DTPREL64 }, | |
897 | { BFD_RELOC_RISCV_TLS_TPREL32, R_RISCV_TLS_TPREL32 }, | |
898 | { BFD_RELOC_RISCV_TLS_TPREL64, R_RISCV_TLS_TPREL64 }, | |
899 | { BFD_RELOC_RISCV_TPREL_HI20, R_RISCV_TPREL_HI20 }, | |
900 | { BFD_RELOC_RISCV_TPREL_ADD, R_RISCV_TPREL_ADD }, | |
901 | { BFD_RELOC_RISCV_TPREL_LO12_S, R_RISCV_TPREL_LO12_S }, | |
902 | { BFD_RELOC_RISCV_TPREL_LO12_I, R_RISCV_TPREL_LO12_I }, | |
903 | { BFD_RELOC_RISCV_TLS_GOT_HI20, R_RISCV_TLS_GOT_HI20 }, | |
904 | { BFD_RELOC_RISCV_TLS_GD_HI20, R_RISCV_TLS_GD_HI20 }, | |
905 | { BFD_RELOC_RISCV_ALIGN, R_RISCV_ALIGN }, | |
906 | { BFD_RELOC_RISCV_RVC_BRANCH, R_RISCV_RVC_BRANCH }, | |
907 | { BFD_RELOC_RISCV_RVC_JUMP, R_RISCV_RVC_JUMP }, | |
908 | { BFD_RELOC_RISCV_RVC_LUI, R_RISCV_RVC_LUI }, | |
909 | { BFD_RELOC_RISCV_GPREL_I, R_RISCV_GPREL_I }, | |
910 | { BFD_RELOC_RISCV_GPREL_S, R_RISCV_GPREL_S }, | |
45f76423 AW |
911 | { BFD_RELOC_RISCV_TPREL_I, R_RISCV_TPREL_I }, |
912 | { BFD_RELOC_RISCV_TPREL_S, R_RISCV_TPREL_S }, | |
913 | { BFD_RELOC_RISCV_RELAX, R_RISCV_RELAX }, | |
914 | { BFD_RELOC_RISCV_SUB6, R_RISCV_SUB6 }, | |
915 | { BFD_RELOC_RISCV_SET6, R_RISCV_SET6 }, | |
916 | { BFD_RELOC_RISCV_SET8, R_RISCV_SET8 }, | |
917 | { BFD_RELOC_RISCV_SET16, R_RISCV_SET16 }, | |
918 | { BFD_RELOC_RISCV_SET32, R_RISCV_SET32 }, | |
a6cbf936 | 919 | { BFD_RELOC_RISCV_32_PCREL, R_RISCV_32_PCREL }, |
e23eba97 NC |
920 | }; |
921 | ||
922 | /* Given a BFD reloc type, return a howto structure. */ | |
923 | ||
924 | reloc_howto_type * | |
925 | riscv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
926 | bfd_reloc_code_real_type code) | |
927 | { | |
928 | unsigned int i; | |
929 | ||
930 | for (i = 0; i < ARRAY_SIZE (riscv_reloc_map); i++) | |
931 | if (riscv_reloc_map[i].bfd_val == code) | |
932 | return &howto_table[(int) riscv_reloc_map[i].elf_val]; | |
933 | ||
934 | bfd_set_error (bfd_error_bad_value); | |
935 | return NULL; | |
936 | } | |
937 | ||
938 | reloc_howto_type * | |
939 | riscv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) | |
940 | { | |
941 | unsigned int i; | |
942 | ||
943 | for (i = 0; i < ARRAY_SIZE (howto_table); i++) | |
944 | if (howto_table[i].name && strcasecmp (howto_table[i].name, r_name) == 0) | |
945 | return &howto_table[i]; | |
946 | ||
947 | return NULL; | |
948 | } | |
949 | ||
950 | reloc_howto_type * | |
951 | riscv_elf_rtype_to_howto (unsigned int r_type) | |
952 | { | |
953 | if (r_type >= ARRAY_SIZE (howto_table)) | |
954 | { | |
955 | (*_bfd_error_handler) (_("unrecognized relocation (0x%x)"), r_type); | |
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 | } |