| 1 | /* RISC-V-specific support for ELF. |
| 2 | Copyright (C) 2011-2020 Free Software Foundation, Inc. |
| 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 "safe-ctype.h" |
| 32 | |
| 33 | #define MINUS_ONE ((bfd_vma)0 - 1) |
| 34 | |
| 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 | |
| 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 */ |
| 73 | MINUS_ONE, /* dst_mask */ |
| 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 */ |
| 103 | MINUS_ONE, /* dst_mask */ |
| 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 */ |
| 116 | 0, /* src_mask */ |
| 117 | 0, /* dst_mask */ |
| 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 */ |
| 130 | 0, /* src_mask */ |
| 131 | 0, /* dst_mask */ |
| 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 */ |
| 142 | bfd_elf_generic_reloc, /* special_function */ |
| 143 | "R_RISCV_TLS_DTPMOD32", /* name */ |
| 144 | FALSE, /* partial_inplace */ |
| 145 | 0, /* src_mask */ |
| 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 */ |
| 156 | bfd_elf_generic_reloc, /* special_function */ |
| 157 | "R_RISCV_TLS_DTPMOD64", /* name */ |
| 158 | FALSE, /* partial_inplace */ |
| 159 | 0, /* src_mask */ |
| 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 */ |
| 170 | bfd_elf_generic_reloc, /* special_function */ |
| 171 | "R_RISCV_TLS_DTPREL32", /* name */ |
| 172 | TRUE, /* partial_inplace */ |
| 173 | 0, /* src_mask */ |
| 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 */ |
| 184 | bfd_elf_generic_reloc, /* special_function */ |
| 185 | "R_RISCV_TLS_DTPREL64", /* name */ |
| 186 | TRUE, /* partial_inplace */ |
| 187 | 0, /* src_mask */ |
| 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 */ |
| 198 | bfd_elf_generic_reloc, /* special_function */ |
| 199 | "R_RISCV_TLS_TPREL32", /* name */ |
| 200 | FALSE, /* partial_inplace */ |
| 201 | 0, /* src_mask */ |
| 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 */ |
| 212 | bfd_elf_generic_reloc, /* special_function */ |
| 213 | "R_RISCV_TLS_TPREL64", /* name */ |
| 214 | FALSE, /* partial_inplace */ |
| 215 | 0, /* src_mask */ |
| 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 */ |
| 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 | |
| 271 | /* Like R_RISCV_CALL, but not locally binding. */ |
| 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 | |
| 467 | /* TLS LE thread pointer usage. May be relaxed. */ |
| 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 */ |
| 486 | 8, /* bitsize */ |
| 487 | FALSE, /* pc_relative */ |
| 488 | 0, /* bitpos */ |
| 489 | complain_overflow_dont, /* complain_on_overflow */ |
| 490 | riscv_elf_add_sub_reloc, /* special_function */ |
| 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 */ |
| 505 | riscv_elf_add_sub_reloc, /* special_function */ |
| 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 */ |
| 520 | riscv_elf_add_sub_reloc, /* special_function */ |
| 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 */ |
| 535 | riscv_elf_add_sub_reloc, /* special_function */ |
| 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 */ |
| 550 | riscv_elf_add_sub_reloc, /* special_function */ |
| 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 */ |
| 565 | riscv_elf_add_sub_reloc, /* special_function */ |
| 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 */ |
| 580 | riscv_elf_add_sub_reloc, /* special_function */ |
| 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 */ |
| 595 | riscv_elf_add_sub_reloc, /* special_function */ |
| 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 */ |
| 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 | |
| 694 | /* GP-relative load. */ |
| 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 | |
| 709 | /* GP-relative store. */ |
| 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 */ |
| 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 */ |
| 777 | riscv_elf_add_sub_reloc, /* special_function */ |
| 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 */ |
| 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 */ |
| 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 }, |
| 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 }, |
| 919 | { BFD_RELOC_RISCV_32_PCREL, R_RISCV_32_PCREL }, |
| 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 (bfd *abfd, unsigned int r_type) |
| 952 | { |
| 953 | if (r_type >= ARRAY_SIZE (howto_table)) |
| 954 | { |
| 955 | (*_bfd_error_handler) (_("%pB: unsupported relocation type %#x"), |
| 956 | abfd, r_type); |
| 957 | bfd_set_error (bfd_error_bad_value); |
| 958 | return NULL; |
| 959 | } |
| 960 | return &howto_table[r_type]; |
| 961 | } |
| 962 | |
| 963 | /* Special_function of RISCV_ADD and RISCV_SUB relocations. */ |
| 964 | |
| 965 | static bfd_reloc_status_type |
| 966 | riscv_elf_add_sub_reloc (bfd *abfd, |
| 967 | arelent *reloc_entry, |
| 968 | asymbol *symbol, |
| 969 | void *data, |
| 970 | asection *input_section, |
| 971 | bfd *output_bfd, |
| 972 | char **error_message ATTRIBUTE_UNUSED) |
| 973 | { |
| 974 | reloc_howto_type *howto = reloc_entry->howto; |
| 975 | bfd_vma relocation; |
| 976 | |
| 977 | if (output_bfd != NULL |
| 978 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 979 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 980 | { |
| 981 | reloc_entry->address += input_section->output_offset; |
| 982 | return bfd_reloc_ok; |
| 983 | } |
| 984 | |
| 985 | if (output_bfd != NULL) |
| 986 | return bfd_reloc_continue; |
| 987 | |
| 988 | relocation = symbol->value + symbol->section->output_section->vma |
| 989 | + symbol->section->output_offset + reloc_entry->addend; |
| 990 | bfd_vma old_value = bfd_get (howto->bitsize, abfd, |
| 991 | data + reloc_entry->address); |
| 992 | |
| 993 | switch (howto->type) |
| 994 | { |
| 995 | case R_RISCV_ADD8: |
| 996 | case R_RISCV_ADD16: |
| 997 | case R_RISCV_ADD32: |
| 998 | case R_RISCV_ADD64: |
| 999 | relocation = old_value + relocation; |
| 1000 | break; |
| 1001 | case R_RISCV_SUB6: |
| 1002 | case R_RISCV_SUB8: |
| 1003 | case R_RISCV_SUB16: |
| 1004 | case R_RISCV_SUB32: |
| 1005 | case R_RISCV_SUB64: |
| 1006 | relocation = old_value - relocation; |
| 1007 | break; |
| 1008 | } |
| 1009 | bfd_put (howto->bitsize, abfd, relocation, data + reloc_entry->address); |
| 1010 | |
| 1011 | return bfd_reloc_ok; |
| 1012 | } |
| 1013 | |
| 1014 | /* Parsing subset version. |
| 1015 | |
| 1016 | Return Value: |
| 1017 | Points to the end of version |
| 1018 | |
| 1019 | Arguments: |
| 1020 | `rps`: Hooks and status for parsing subset. |
| 1021 | `march`: Full arch string. |
| 1022 | `p`: Curent parsing position. |
| 1023 | `major_version`: Parsing result of major version, using |
| 1024 | default_major_version if version is not present in arch string. |
| 1025 | `minor_version`: Parsing result of minor version, set to 0 if version is |
| 1026 | not present in arch string, but set to `default_minor_version` if |
| 1027 | `major_version` using default_major_version. |
| 1028 | `default_major_version`: Default major version. |
| 1029 | `default_minor_version`: Default minor version. |
| 1030 | `std_ext_p`: True if parsing std extension. */ |
| 1031 | |
| 1032 | static const char * |
| 1033 | riscv_parsing_subset_version (riscv_parse_subset_t *rps, |
| 1034 | const char *march, |
| 1035 | const char *p, |
| 1036 | unsigned *major_version, |
| 1037 | unsigned *minor_version, |
| 1038 | unsigned default_major_version, |
| 1039 | unsigned default_minor_version, |
| 1040 | bfd_boolean std_ext_p) |
| 1041 | { |
| 1042 | bfd_boolean major_p = TRUE; |
| 1043 | unsigned version = 0; |
| 1044 | unsigned major = 0; |
| 1045 | unsigned minor = 0; |
| 1046 | char np; |
| 1047 | |
| 1048 | for (;*p; ++p) |
| 1049 | { |
| 1050 | if (*p == 'p') |
| 1051 | { |
| 1052 | np = *(p + 1); |
| 1053 | |
| 1054 | if (!ISDIGIT (np)) |
| 1055 | { |
| 1056 | /* Might be beginning of `p` extension. */ |
| 1057 | if (std_ext_p) |
| 1058 | { |
| 1059 | *major_version = version; |
| 1060 | *minor_version = 0; |
| 1061 | return p; |
| 1062 | } |
| 1063 | else |
| 1064 | { |
| 1065 | rps->error_handler ("-march=%s: Expect number after `%dp'.", |
| 1066 | march, version); |
| 1067 | return NULL; |
| 1068 | } |
| 1069 | } |
| 1070 | |
| 1071 | major = version; |
| 1072 | major_p = FALSE; |
| 1073 | version = 0; |
| 1074 | } |
| 1075 | else if (ISDIGIT (*p)) |
| 1076 | version = (version * 10) + (*p - '0'); |
| 1077 | else |
| 1078 | break; |
| 1079 | } |
| 1080 | |
| 1081 | if (major_p) |
| 1082 | major = version; |
| 1083 | else |
| 1084 | minor = version; |
| 1085 | |
| 1086 | if (major == 0 && minor == 0) |
| 1087 | { |
| 1088 | /* We don't found any version string, use default version. */ |
| 1089 | *major_version = default_major_version; |
| 1090 | *minor_version = default_minor_version; |
| 1091 | } |
| 1092 | else |
| 1093 | { |
| 1094 | *major_version = major; |
| 1095 | *minor_version = minor; |
| 1096 | } |
| 1097 | return p; |
| 1098 | } |
| 1099 | |
| 1100 | /* Return string which contain all supported standard extensions in |
| 1101 | canonical order. */ |
| 1102 | |
| 1103 | const char * |
| 1104 | riscv_supported_std_ext (void) |
| 1105 | { |
| 1106 | return "mafdqlcbjtpvn"; |
| 1107 | } |
| 1108 | |
| 1109 | /* Parsing function for standard extensions. |
| 1110 | |
| 1111 | Return Value: |
| 1112 | Points to the end of extensions. |
| 1113 | |
| 1114 | Arguments: |
| 1115 | `rps`: Hooks and status for parsing subset. |
| 1116 | `march`: Full arch string. |
| 1117 | `p`: Curent parsing position. */ |
| 1118 | |
| 1119 | static const char * |
| 1120 | riscv_parse_std_ext (riscv_parse_subset_t *rps, |
| 1121 | const char *march, const char *p) |
| 1122 | { |
| 1123 | const char *all_std_exts = riscv_supported_std_ext (); |
| 1124 | const char *std_exts = all_std_exts; |
| 1125 | |
| 1126 | unsigned major_version = 0; |
| 1127 | unsigned minor_version = 0; |
| 1128 | char std_ext = '\0'; |
| 1129 | |
| 1130 | /* First letter must start with i, e or g. */ |
| 1131 | switch (*p) |
| 1132 | { |
| 1133 | case 'i': |
| 1134 | p++; |
| 1135 | p = riscv_parsing_subset_version ( |
| 1136 | rps, |
| 1137 | march, |
| 1138 | p, &major_version, &minor_version, |
| 1139 | /* default_major_version= */ 2, |
| 1140 | /* default_minor_version= */ 0, |
| 1141 | /* std_ext_p= */TRUE); |
| 1142 | riscv_add_subset (rps->subset_list, "i", major_version, minor_version); |
| 1143 | break; |
| 1144 | |
| 1145 | case 'e': |
| 1146 | p++; |
| 1147 | p = riscv_parsing_subset_version ( |
| 1148 | rps, |
| 1149 | march, |
| 1150 | p, &major_version, &minor_version, |
| 1151 | /* default_major_version= */ 1, |
| 1152 | /* default_minor_version= */ 9, |
| 1153 | /* std_ext_p= */TRUE); |
| 1154 | |
| 1155 | riscv_add_subset (rps->subset_list, "e", major_version, minor_version); |
| 1156 | riscv_add_subset (rps->subset_list, "i", 2, 0); |
| 1157 | |
| 1158 | if (*rps->xlen > 32) |
| 1159 | { |
| 1160 | rps->error_handler ("-march=%s: rv%de is not a valid base ISA", |
| 1161 | march, *rps->xlen); |
| 1162 | return NULL; |
| 1163 | } |
| 1164 | |
| 1165 | break; |
| 1166 | |
| 1167 | case 'g': |
| 1168 | p++; |
| 1169 | p = riscv_parsing_subset_version ( |
| 1170 | rps, |
| 1171 | march, |
| 1172 | p, &major_version, &minor_version, |
| 1173 | /* default_major_version= */ 2, |
| 1174 | /* default_minor_version= */ 0, |
| 1175 | /* std_ext_p= */TRUE); |
| 1176 | riscv_add_subset (rps->subset_list, "i", major_version, minor_version); |
| 1177 | |
| 1178 | for ( ; *std_exts != 'q'; std_exts++) |
| 1179 | { |
| 1180 | const char subset[] = {*std_exts, '\0'}; |
| 1181 | riscv_add_subset ( |
| 1182 | rps->subset_list, subset, major_version, minor_version); |
| 1183 | } |
| 1184 | break; |
| 1185 | |
| 1186 | default: |
| 1187 | rps->error_handler ( |
| 1188 | "-march=%s: first ISA subset must be `e', `i' or `g'", march); |
| 1189 | return NULL; |
| 1190 | } |
| 1191 | |
| 1192 | while (*p) |
| 1193 | { |
| 1194 | char subset[2] = {0, 0}; |
| 1195 | |
| 1196 | if (*p == 'x' || *p == 's') |
| 1197 | break; |
| 1198 | |
| 1199 | if (*p == '_') |
| 1200 | { |
| 1201 | p++; |
| 1202 | continue; |
| 1203 | } |
| 1204 | |
| 1205 | std_ext = *p; |
| 1206 | |
| 1207 | /* Checking canonical order. */ |
| 1208 | while (*std_exts && std_ext != *std_exts) std_exts++; |
| 1209 | |
| 1210 | if (std_ext != *std_exts) |
| 1211 | { |
| 1212 | if (strchr (all_std_exts, std_ext) == NULL) |
| 1213 | rps->error_handler ( |
| 1214 | "-march=%s: unsupported ISA subset `%c'", march, *p); |
| 1215 | else |
| 1216 | rps->error_handler ( |
| 1217 | "-march=%s: ISA string is not in canonical order. `%c'", |
| 1218 | march, *p); |
| 1219 | return NULL; |
| 1220 | } |
| 1221 | |
| 1222 | std_exts++; |
| 1223 | |
| 1224 | p++; |
| 1225 | p = riscv_parsing_subset_version ( |
| 1226 | rps, |
| 1227 | march, |
| 1228 | p, &major_version, &minor_version, |
| 1229 | /* default_major_version= */ 2, |
| 1230 | /* default_minor_version= */ 0, |
| 1231 | /* std_ext_p= */TRUE); |
| 1232 | |
| 1233 | subset[0] = std_ext; |
| 1234 | |
| 1235 | riscv_add_subset (rps->subset_list, subset, major_version, minor_version); |
| 1236 | } |
| 1237 | return p; |
| 1238 | } |
| 1239 | |
| 1240 | /* Parsing function for non-standard and supervisor extensions. |
| 1241 | |
| 1242 | Return Value: |
| 1243 | Points to the end of extensions. |
| 1244 | |
| 1245 | Arguments: |
| 1246 | `rps`: Hooks and status for parsing subset. |
| 1247 | `march`: Full arch string. |
| 1248 | `p`: Curent parsing position. |
| 1249 | `ext_type`: What kind of extensions, 'x', 's' or 'sx'. |
| 1250 | `ext_type_str`: Full name for kind of extension. */ |
| 1251 | |
| 1252 | static const char * |
| 1253 | riscv_parse_sv_or_non_std_ext (riscv_parse_subset_t *rps, |
| 1254 | const char *march, |
| 1255 | const char *p, |
| 1256 | const char *ext_type, |
| 1257 | const char *ext_type_str) |
| 1258 | { |
| 1259 | unsigned major_version = 0; |
| 1260 | unsigned minor_version = 0; |
| 1261 | size_t ext_type_len = strlen (ext_type); |
| 1262 | |
| 1263 | while (*p) |
| 1264 | { |
| 1265 | if (*p == '_') |
| 1266 | { |
| 1267 | p++; |
| 1268 | continue; |
| 1269 | } |
| 1270 | |
| 1271 | if (strncmp (p, ext_type, ext_type_len) != 0) |
| 1272 | break; |
| 1273 | |
| 1274 | /* It's non-standard supervisor extension if it prefix with sx. */ |
| 1275 | if ((ext_type[0] == 's') && (ext_type_len == 1) |
| 1276 | && (*(p + 1) == 'x')) |
| 1277 | break; |
| 1278 | |
| 1279 | char *subset = xstrdup (p); |
| 1280 | char *q = subset; |
| 1281 | const char *end_of_version; |
| 1282 | |
| 1283 | while (*++q != '\0' && *q != '_' && !ISDIGIT (*q)) |
| 1284 | ; |
| 1285 | |
| 1286 | end_of_version = |
| 1287 | riscv_parsing_subset_version ( |
| 1288 | rps, |
| 1289 | march, |
| 1290 | q, &major_version, &minor_version, |
| 1291 | /* default_major_version= */ 2, |
| 1292 | /* default_minor_version= */ 0, |
| 1293 | /* std_ext_p= */FALSE); |
| 1294 | |
| 1295 | *q = '\0'; |
| 1296 | |
| 1297 | riscv_add_subset (rps->subset_list, subset, major_version, minor_version); |
| 1298 | free (subset); |
| 1299 | p += end_of_version - subset; |
| 1300 | |
| 1301 | if (*p != '\0' && *p != '_') |
| 1302 | { |
| 1303 | rps->error_handler ("-march=%s: %s must seperate with _", |
| 1304 | march, ext_type_str); |
| 1305 | return NULL; |
| 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | return p; |
| 1310 | } |
| 1311 | |
| 1312 | /* Function for parsing arch string. |
| 1313 | |
| 1314 | Return Value: |
| 1315 | Return TRUE on success. |
| 1316 | |
| 1317 | Arguments: |
| 1318 | `rps`: Hooks and status for parsing subset. |
| 1319 | `arch`: Arch string. */ |
| 1320 | |
| 1321 | bfd_boolean |
| 1322 | riscv_parse_subset (riscv_parse_subset_t *rps, |
| 1323 | const char *arch) |
| 1324 | { |
| 1325 | const char *p = arch; |
| 1326 | |
| 1327 | if (strncmp (p, "rv32", 4) == 0) |
| 1328 | { |
| 1329 | *rps->xlen = 32; |
| 1330 | p += 4; |
| 1331 | } |
| 1332 | else if (strncmp (p, "rv64", 4) == 0) |
| 1333 | { |
| 1334 | *rps->xlen = 64; |
| 1335 | p += 4; |
| 1336 | } |
| 1337 | else |
| 1338 | { |
| 1339 | rps->error_handler ("-march=%s: ISA string must begin with rv32 or rv64", |
| 1340 | arch); |
| 1341 | return FALSE; |
| 1342 | } |
| 1343 | |
| 1344 | /* Parsing standard extension. */ |
| 1345 | p = riscv_parse_std_ext (rps, arch, p); |
| 1346 | |
| 1347 | if (p == NULL) |
| 1348 | return FALSE; |
| 1349 | |
| 1350 | /* Parsing non-standard extension. */ |
| 1351 | p = riscv_parse_sv_or_non_std_ext ( |
| 1352 | rps, arch, p, "x", "non-standard extension"); |
| 1353 | |
| 1354 | if (p == NULL) |
| 1355 | return FALSE; |
| 1356 | |
| 1357 | /* Parsing supervisor extension. */ |
| 1358 | p = riscv_parse_sv_or_non_std_ext ( |
| 1359 | rps, arch, p, "s", "supervisor extension"); |
| 1360 | |
| 1361 | if (p == NULL) |
| 1362 | return FALSE; |
| 1363 | |
| 1364 | /* Parsing non-standard supervisor extension. */ |
| 1365 | p = riscv_parse_sv_or_non_std_ext ( |
| 1366 | rps, arch, p, "sx", "non-standard supervisor extension"); |
| 1367 | |
| 1368 | if (p == NULL) |
| 1369 | return FALSE; |
| 1370 | |
| 1371 | if (*p != '\0') |
| 1372 | { |
| 1373 | rps->error_handler ("-march=%s: unexpected ISA string at end: %s", |
| 1374 | arch, p); |
| 1375 | return FALSE; |
| 1376 | } |
| 1377 | |
| 1378 | if (riscv_lookup_subset (rps->subset_list, "e") |
| 1379 | && riscv_lookup_subset (rps->subset_list, "f")) |
| 1380 | { |
| 1381 | rps->error_handler ("-march=%s: rv32e does not support the `f' extension", |
| 1382 | arch); |
| 1383 | return FALSE; |
| 1384 | } |
| 1385 | |
| 1386 | if (riscv_lookup_subset (rps->subset_list, "d") |
| 1387 | && !riscv_lookup_subset (rps->subset_list, "f")) |
| 1388 | { |
| 1389 | rps->error_handler ("-march=%s: `d' extension requires `f' extension", |
| 1390 | arch); |
| 1391 | return FALSE; |
| 1392 | } |
| 1393 | |
| 1394 | if (riscv_lookup_subset (rps->subset_list, "q") |
| 1395 | && !riscv_lookup_subset (rps->subset_list, "d")) |
| 1396 | { |
| 1397 | rps->error_handler ("-march=%s: `q' extension requires `d' extension", |
| 1398 | arch); |
| 1399 | return FALSE; |
| 1400 | } |
| 1401 | |
| 1402 | if (riscv_lookup_subset (rps->subset_list, "q") && *rps->xlen < 64) |
| 1403 | { |
| 1404 | rps->error_handler ("-march=%s: rv32 does not support the `q' extension", |
| 1405 | arch); |
| 1406 | return FALSE; |
| 1407 | } |
| 1408 | return TRUE; |
| 1409 | } |
| 1410 | |
| 1411 | /* Add new subset to list. */ |
| 1412 | |
| 1413 | void |
| 1414 | riscv_add_subset (riscv_subset_list_t *subset_list, |
| 1415 | const char *subset, |
| 1416 | int major, int minor) |
| 1417 | { |
| 1418 | riscv_subset_t *s = xmalloc (sizeof *s); |
| 1419 | |
| 1420 | if (subset_list->head == NULL) |
| 1421 | subset_list->head = s; |
| 1422 | |
| 1423 | s->name = xstrdup (subset); |
| 1424 | s->major_version = major; |
| 1425 | s->minor_version = minor; |
| 1426 | s->next = NULL; |
| 1427 | |
| 1428 | if (subset_list->tail != NULL) |
| 1429 | subset_list->tail->next = s; |
| 1430 | |
| 1431 | subset_list->tail = s; |
| 1432 | } |
| 1433 | |
| 1434 | /* Find subset in list without version checking, return NULL if not found. */ |
| 1435 | |
| 1436 | riscv_subset_t * |
| 1437 | riscv_lookup_subset (const riscv_subset_list_t *subset_list, |
| 1438 | const char *subset) |
| 1439 | { |
| 1440 | return riscv_lookup_subset_version ( |
| 1441 | subset_list, subset, |
| 1442 | RISCV_DONT_CARE_VERSION, |
| 1443 | RISCV_DONT_CARE_VERSION); |
| 1444 | } |
| 1445 | |
| 1446 | /* Find subset in list with version checking, return NULL if not found. */ |
| 1447 | |
| 1448 | riscv_subset_t * |
| 1449 | riscv_lookup_subset_version (const riscv_subset_list_t *subset_list, |
| 1450 | const char *subset, |
| 1451 | int major, int minor) |
| 1452 | { |
| 1453 | riscv_subset_t *s; |
| 1454 | |
| 1455 | for (s = subset_list->head; s != NULL; s = s->next) |
| 1456 | if (strcasecmp (s->name, subset) == 0) |
| 1457 | { |
| 1458 | if ((major != RISCV_DONT_CARE_VERSION) |
| 1459 | && (s->major_version != major)) |
| 1460 | return NULL; |
| 1461 | |
| 1462 | if ((minor != RISCV_DONT_CARE_VERSION) |
| 1463 | && (s->minor_version != minor)) |
| 1464 | return NULL; |
| 1465 | |
| 1466 | return s; |
| 1467 | } |
| 1468 | |
| 1469 | return NULL; |
| 1470 | } |
| 1471 | |
| 1472 | /* Release subset list. */ |
| 1473 | |
| 1474 | void |
| 1475 | riscv_release_subset_list (riscv_subset_list_t *subset_list) |
| 1476 | { |
| 1477 | while (subset_list->head != NULL) |
| 1478 | { |
| 1479 | riscv_subset_t *next = subset_list->head->next; |
| 1480 | free ((void *)subset_list->head->name); |
| 1481 | free (subset_list->head); |
| 1482 | subset_list->head = next; |
| 1483 | } |
| 1484 | |
| 1485 | subset_list->tail = NULL; |
| 1486 | } |
| 1487 | |
| 1488 | /* Return the number of digits for the input. */ |
| 1489 | |
| 1490 | static size_t |
| 1491 | riscv_estimate_digit (unsigned num) |
| 1492 | { |
| 1493 | size_t digit = 0; |
| 1494 | if (num == 0) |
| 1495 | return 1; |
| 1496 | |
| 1497 | for (digit = 0; num ; num /= 10) |
| 1498 | digit++; |
| 1499 | |
| 1500 | return digit; |
| 1501 | } |
| 1502 | |
| 1503 | /* Auxiliary function to estimate string length of subset list. */ |
| 1504 | |
| 1505 | static size_t |
| 1506 | riscv_estimate_arch_strlen1 (const riscv_subset_t *subset) |
| 1507 | { |
| 1508 | if (subset == NULL) |
| 1509 | return 6; /* For rv32/rv64/rv128 and string terminator. */ |
| 1510 | |
| 1511 | return riscv_estimate_arch_strlen1 (subset->next) |
| 1512 | + strlen (subset->name) |
| 1513 | + riscv_estimate_digit (subset->major_version) |
| 1514 | + 1 /* For version seperator: 'p'. */ |
| 1515 | + riscv_estimate_digit (subset->minor_version) |
| 1516 | + 1 /* For underscore. */; |
| 1517 | } |
| 1518 | |
| 1519 | /* Estimate the string length of this subset list. */ |
| 1520 | |
| 1521 | static size_t |
| 1522 | riscv_estimate_arch_strlen (const riscv_subset_list_t *subset_list) |
| 1523 | { |
| 1524 | return riscv_estimate_arch_strlen1 (subset_list->head); |
| 1525 | } |
| 1526 | |
| 1527 | /* Auxiliary function to convert subset info to string. */ |
| 1528 | |
| 1529 | static void |
| 1530 | riscv_arch_str1 (riscv_subset_t *subset, |
| 1531 | char *attr_str, char *buf, size_t bufsz) |
| 1532 | { |
| 1533 | const char *underline = "_"; |
| 1534 | |
| 1535 | if (subset == NULL) |
| 1536 | return; |
| 1537 | |
| 1538 | /* No underline between rvXX and i/e. */ |
| 1539 | if ((strcasecmp (subset->name, "i") == 0) |
| 1540 | || (strcasecmp (subset->name, "e") == 0)) |
| 1541 | underline = ""; |
| 1542 | |
| 1543 | snprintf (buf, bufsz, "%s%s%dp%d", |
| 1544 | underline, |
| 1545 | subset->name, |
| 1546 | subset->major_version, |
| 1547 | subset->minor_version); |
| 1548 | |
| 1549 | strncat (attr_str, buf, bufsz); |
| 1550 | |
| 1551 | /* Skip 'i' extension after 'e'. */ |
| 1552 | if ((strcasecmp (subset->name, "e") == 0) |
| 1553 | && subset->next |
| 1554 | && (strcasecmp (subset->next->name, "i") == 0)) |
| 1555 | riscv_arch_str1 (subset->next->next, attr_str, buf, bufsz); |
| 1556 | else |
| 1557 | riscv_arch_str1 (subset->next, attr_str, buf, bufsz); |
| 1558 | } |
| 1559 | |
| 1560 | /* Convert subset info to string with explicit version info. */ |
| 1561 | |
| 1562 | char * |
| 1563 | riscv_arch_str (unsigned xlen, const riscv_subset_list_t *subset) |
| 1564 | { |
| 1565 | size_t arch_str_len = riscv_estimate_arch_strlen (subset); |
| 1566 | char *attr_str = xmalloc (arch_str_len); |
| 1567 | char *buf = xmalloc (arch_str_len); |
| 1568 | |
| 1569 | snprintf (attr_str, arch_str_len, "rv%u", xlen); |
| 1570 | |
| 1571 | riscv_arch_str1 (subset->head, attr_str, buf, arch_str_len); |
| 1572 | free (buf); |
| 1573 | |
| 1574 | return attr_str; |
| 1575 | } |