| 1 | /* BFD library support routines for the Renesas / SuperH SH architecture. |
| 2 | Copyright (C) 1993-2019 Free Software Foundation, Inc. |
| 3 | Hacked by Steve Chamberlain of Cygnus Support. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "sysdep.h" |
| 23 | #include "bfd.h" |
| 24 | #include "libbfd.h" |
| 25 | #include "../opcodes/sh-opc.h" |
| 26 | |
| 27 | #define SH_NEXT arch_info_struct + 0 |
| 28 | #define SH2_NEXT arch_info_struct + 1 |
| 29 | #define SH2E_NEXT arch_info_struct + 2 |
| 30 | #define SH_DSP_NEXT arch_info_struct + 3 |
| 31 | #define SH3_NEXT arch_info_struct + 4 |
| 32 | #define SH3_NOMMU_NEXT arch_info_struct + 5 |
| 33 | #define SH3_DSP_NEXT arch_info_struct + 6 |
| 34 | #define SH3E_NEXT arch_info_struct + 7 |
| 35 | #define SH4_NEXT arch_info_struct + 8 |
| 36 | #define SH4A_NEXT arch_info_struct + 9 |
| 37 | #define SH4AL_DSP_NEXT arch_info_struct + 10 |
| 38 | #define SH4_NOFPU_NEXT arch_info_struct + 11 |
| 39 | #define SH4_NOMMU_NOFPU_NEXT arch_info_struct + 12 |
| 40 | #define SH4A_NOFPU_NEXT arch_info_struct + 13 |
| 41 | #define SH2A_NEXT arch_info_struct + 14 |
| 42 | #define SH2A_NOFPU_NEXT arch_info_struct + 15 |
| 43 | #define SH2A_NOFPU_OR_SH4_NOMMU_NOFPU_NEXT arch_info_struct + 16 |
| 44 | #define SH2A_NOFPU_OR_SH3_NOMMU_NEXT arch_info_struct + 17 |
| 45 | #define SH2A_OR_SH4_NEXT arch_info_struct + 18 |
| 46 | #define SH2A_OR_SH3E_NEXT NULL |
| 47 | |
| 48 | static const bfd_arch_info_type arch_info_struct[] = |
| 49 | { |
| 50 | { |
| 51 | 32, /* 32 bits in a word. */ |
| 52 | 32, /* 32 bits in an address. */ |
| 53 | 8, /* 8 bits in a byte. */ |
| 54 | bfd_arch_sh, |
| 55 | bfd_mach_sh2, |
| 56 | "sh", /* Architecture name. */ |
| 57 | "sh2", /* Machine name. */ |
| 58 | 1, |
| 59 | FALSE, /* Not the default. */ |
| 60 | bfd_default_compatible, |
| 61 | bfd_default_scan, |
| 62 | bfd_arch_default_fill, |
| 63 | SH2_NEXT |
| 64 | }, |
| 65 | { |
| 66 | 32, /* 32 bits in a word. */ |
| 67 | 32, /* 32 bits in an address. */ |
| 68 | 8, /* 8 bits in a byte. */ |
| 69 | bfd_arch_sh, |
| 70 | bfd_mach_sh2e, |
| 71 | "sh", /* Architecture name. */ |
| 72 | "sh2e", /* Machine name. */ |
| 73 | 1, |
| 74 | FALSE, /* Not the default. */ |
| 75 | bfd_default_compatible, |
| 76 | bfd_default_scan, |
| 77 | bfd_arch_default_fill, |
| 78 | SH2E_NEXT |
| 79 | }, |
| 80 | { |
| 81 | 32, /* 32 bits in a word. */ |
| 82 | 32, /* 32 bits in an address. */ |
| 83 | 8, /* 8 bits in a byte. */ |
| 84 | bfd_arch_sh, |
| 85 | bfd_mach_sh_dsp, |
| 86 | "sh", /* Architecture name. */ |
| 87 | "sh-dsp", /* Machine name. */ |
| 88 | 1, |
| 89 | FALSE, /* Not the default. */ |
| 90 | bfd_default_compatible, |
| 91 | bfd_default_scan, |
| 92 | bfd_arch_default_fill, |
| 93 | SH_DSP_NEXT |
| 94 | }, |
| 95 | { |
| 96 | 32, /* 32 bits in a word. */ |
| 97 | 32, /* 32 bits in an address. */ |
| 98 | 8, /* 8 bits in a byte. */ |
| 99 | bfd_arch_sh, |
| 100 | bfd_mach_sh3, |
| 101 | "sh", /* Architecture name. */ |
| 102 | "sh3", /* Machine name. */ |
| 103 | 1, |
| 104 | FALSE, /* Not the default. */ |
| 105 | bfd_default_compatible, |
| 106 | bfd_default_scan, |
| 107 | bfd_arch_default_fill, |
| 108 | SH3_NEXT |
| 109 | }, |
| 110 | { |
| 111 | 32, /* 32 bits in a word. */ |
| 112 | 32, /* 32 bits in an address. */ |
| 113 | 8, /* 8 bits in a byte. */ |
| 114 | bfd_arch_sh, |
| 115 | bfd_mach_sh3_nommu, |
| 116 | "sh", /* Architecture name. */ |
| 117 | "sh3-nommu", /* Machine name. */ |
| 118 | 1, |
| 119 | FALSE, /* Not the default. */ |
| 120 | bfd_default_compatible, |
| 121 | bfd_default_scan, |
| 122 | bfd_arch_default_fill, |
| 123 | SH3_NOMMU_NEXT |
| 124 | }, |
| 125 | { |
| 126 | 32, /* 32 bits in a word. */ |
| 127 | 32, /* 32 bits in an address. */ |
| 128 | 8, /* 8 bits in a byte. */ |
| 129 | bfd_arch_sh, |
| 130 | bfd_mach_sh3_dsp, |
| 131 | "sh", /* Architecture name. */ |
| 132 | "sh3-dsp", /* Machine name. */ |
| 133 | 1, |
| 134 | FALSE, /* Not the default. */ |
| 135 | bfd_default_compatible, |
| 136 | bfd_default_scan, |
| 137 | bfd_arch_default_fill, |
| 138 | SH3_DSP_NEXT |
| 139 | }, |
| 140 | { |
| 141 | 32, /* 32 bits in a word. */ |
| 142 | 32, /* 32 bits in an address. */ |
| 143 | 8, /* 8 bits in a byte. */ |
| 144 | bfd_arch_sh, |
| 145 | bfd_mach_sh3e, |
| 146 | "sh", /* Architecture name. */ |
| 147 | "sh3e", /* Machine name. */ |
| 148 | 1, |
| 149 | FALSE, /* Not the default. */ |
| 150 | bfd_default_compatible, |
| 151 | bfd_default_scan, |
| 152 | bfd_arch_default_fill, |
| 153 | SH3E_NEXT |
| 154 | }, |
| 155 | { |
| 156 | 32, /* 32 bits in a word. */ |
| 157 | 32, /* 32 bits in an address. */ |
| 158 | 8, /* 8 bits in a byte. */ |
| 159 | bfd_arch_sh, |
| 160 | bfd_mach_sh4, |
| 161 | "sh", /* Architecture name. */ |
| 162 | "sh4", /* Machine name. */ |
| 163 | 1, |
| 164 | FALSE, /* Not the default. */ |
| 165 | bfd_default_compatible, |
| 166 | bfd_default_scan, |
| 167 | bfd_arch_default_fill, |
| 168 | SH4_NEXT |
| 169 | }, |
| 170 | { |
| 171 | 32, /* 32 bits in a word. */ |
| 172 | 32, /* 32 bits in an address. */ |
| 173 | 8, /* 8 bits in a byte. */ |
| 174 | bfd_arch_sh, |
| 175 | bfd_mach_sh4a, |
| 176 | "sh", /* Architecture name. */ |
| 177 | "sh4a", /* Machine name. */ |
| 178 | 1, |
| 179 | FALSE, /* Not the default. */ |
| 180 | bfd_default_compatible, |
| 181 | bfd_default_scan, |
| 182 | bfd_arch_default_fill, |
| 183 | SH4A_NEXT |
| 184 | }, |
| 185 | { |
| 186 | 32, /* 32 bits in a word. */ |
| 187 | 32, /* 32 bits in an address. */ |
| 188 | 8, /* 8 bits in a byte. */ |
| 189 | bfd_arch_sh, |
| 190 | bfd_mach_sh4al_dsp, |
| 191 | "sh", /* Architecture name. */ |
| 192 | "sh4al-dsp", /* Machine name. */ |
| 193 | 1, |
| 194 | FALSE, /* Not the default. */ |
| 195 | bfd_default_compatible, |
| 196 | bfd_default_scan, |
| 197 | bfd_arch_default_fill, |
| 198 | SH4AL_DSP_NEXT |
| 199 | }, |
| 200 | { |
| 201 | 32, /* 32 bits in a word. */ |
| 202 | 32, /* 32 bits in an address. */ |
| 203 | 8, /* 8 bits in a byte. */ |
| 204 | bfd_arch_sh, |
| 205 | bfd_mach_sh4_nofpu, |
| 206 | "sh", /* Architecture name. */ |
| 207 | "sh4-nofpu", /* Machine name. */ |
| 208 | 1, |
| 209 | FALSE, /* Not the default. */ |
| 210 | bfd_default_compatible, |
| 211 | bfd_default_scan, |
| 212 | bfd_arch_default_fill, |
| 213 | SH4_NOFPU_NEXT |
| 214 | }, |
| 215 | { |
| 216 | 32, /* 32 bits in a word. */ |
| 217 | 32, /* 32 bits in an address. */ |
| 218 | 8, /* 8 bits in a byte. */ |
| 219 | bfd_arch_sh, |
| 220 | bfd_mach_sh4_nommu_nofpu, |
| 221 | "sh", /* Architecture name. */ |
| 222 | "sh4-nommu-nofpu", /* Machine name. */ |
| 223 | 1, |
| 224 | FALSE, /* Not the default. */ |
| 225 | bfd_default_compatible, |
| 226 | bfd_default_scan, |
| 227 | bfd_arch_default_fill, |
| 228 | SH4_NOMMU_NOFPU_NEXT |
| 229 | }, |
| 230 | { |
| 231 | 32, /* 32 bits in a word. */ |
| 232 | 32, /* 32 bits in an address. */ |
| 233 | 8, /* 8 bits in a byte. */ |
| 234 | bfd_arch_sh, |
| 235 | bfd_mach_sh4a_nofpu, |
| 236 | "sh", /* Architecture name. */ |
| 237 | "sh4a-nofpu", /* Machine name. */ |
| 238 | 1, |
| 239 | FALSE, /* Not the default. */ |
| 240 | bfd_default_compatible, |
| 241 | bfd_default_scan, |
| 242 | bfd_arch_default_fill, |
| 243 | SH4A_NOFPU_NEXT |
| 244 | }, |
| 245 | { |
| 246 | 32, /* 32 bits in a word. */ |
| 247 | 32, /* 32 bits in an address. */ |
| 248 | 8, /* 8 bits in a byte. */ |
| 249 | bfd_arch_sh, |
| 250 | bfd_mach_sh2a, |
| 251 | "sh", /* Architecture name. */ |
| 252 | "sh2a", /* Machine name. */ |
| 253 | 1, |
| 254 | FALSE, /* Not the default. */ |
| 255 | bfd_default_compatible, |
| 256 | bfd_default_scan, |
| 257 | bfd_arch_default_fill, |
| 258 | SH2A_NEXT |
| 259 | }, |
| 260 | { |
| 261 | 32, /* 32 bits in a word. */ |
| 262 | 32, /* 32 bits in an address. */ |
| 263 | 8, /* 8 bits in a byte. */ |
| 264 | bfd_arch_sh, |
| 265 | bfd_mach_sh2a_nofpu, |
| 266 | "sh", /* Architecture name. */ |
| 267 | "sh2a-nofpu", /* Machine name. */ |
| 268 | 1, |
| 269 | FALSE, /* Not the default. */ |
| 270 | bfd_default_compatible, |
| 271 | bfd_default_scan, |
| 272 | bfd_arch_default_fill, |
| 273 | SH2A_NOFPU_NEXT |
| 274 | }, |
| 275 | { |
| 276 | 32, /* 32 bits in a word. */ |
| 277 | 32, /* 32 bits in an address. */ |
| 278 | 8, /* 8 bits in a byte. */ |
| 279 | bfd_arch_sh, |
| 280 | bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu, |
| 281 | "sh", /* Architecture name. */ |
| 282 | "sh2a-nofpu-or-sh4-nommu-nofpu", /* Machine name. */ |
| 283 | 1, |
| 284 | FALSE, /* Not the default. */ |
| 285 | bfd_default_compatible, |
| 286 | bfd_default_scan, |
| 287 | bfd_arch_default_fill, |
| 288 | SH2A_NOFPU_OR_SH4_NOMMU_NOFPU_NEXT |
| 289 | }, |
| 290 | { |
| 291 | 32, /* 32 bits in a word. */ |
| 292 | 32, /* 32 bits in an address. */ |
| 293 | 8, /* 8 bits in a byte. */ |
| 294 | bfd_arch_sh, |
| 295 | bfd_mach_sh2a_nofpu_or_sh3_nommu, |
| 296 | "sh", /* Architecture name. . */ |
| 297 | "sh2a-nofpu-or-sh3-nommu", /* Machine name. */ |
| 298 | 1, |
| 299 | FALSE, /* Not the default. */ |
| 300 | bfd_default_compatible, |
| 301 | bfd_default_scan, |
| 302 | bfd_arch_default_fill, |
| 303 | SH2A_NOFPU_OR_SH3_NOMMU_NEXT |
| 304 | }, |
| 305 | { |
| 306 | 32, /* 32 bits in a word. */ |
| 307 | 32, /* 32 bits in an address. */ |
| 308 | 8, /* 8 bits in a byte. */ |
| 309 | bfd_arch_sh, |
| 310 | bfd_mach_sh2a_or_sh4, |
| 311 | "sh", /* Architecture name. */ |
| 312 | "sh2a-or-sh4", /* Machine name. */ |
| 313 | 1, |
| 314 | FALSE, /* Not the default. */ |
| 315 | bfd_default_compatible, |
| 316 | bfd_default_scan, |
| 317 | bfd_arch_default_fill, |
| 318 | SH2A_OR_SH4_NEXT |
| 319 | }, |
| 320 | { |
| 321 | 32, /* 32 bits in a word. */ |
| 322 | 32, /* 32 bits in an address. */ |
| 323 | 8, /* 8 bits in a byte. */ |
| 324 | bfd_arch_sh, |
| 325 | bfd_mach_sh2a_or_sh3e, |
| 326 | "sh", /* Architecture name. */ |
| 327 | "sh2a-or-sh3e", /* Machine name. */ |
| 328 | 1, |
| 329 | FALSE, /* Not the default. */ |
| 330 | bfd_default_compatible, |
| 331 | bfd_default_scan, |
| 332 | bfd_arch_default_fill, |
| 333 | SH2A_OR_SH3E_NEXT |
| 334 | }, |
| 335 | }; |
| 336 | |
| 337 | const bfd_arch_info_type bfd_sh_arch = |
| 338 | { |
| 339 | 32, /* 32 bits in a word. */ |
| 340 | 32, /* 32 bits in an address. */ |
| 341 | 8, /* 8 bits in a byte. */ |
| 342 | bfd_arch_sh, |
| 343 | bfd_mach_sh, |
| 344 | "sh", /* Architecture name. */ |
| 345 | "sh", /* Machine name. */ |
| 346 | 1, |
| 347 | TRUE, /* The default machine. */ |
| 348 | bfd_default_compatible, |
| 349 | bfd_default_scan, |
| 350 | bfd_arch_default_fill, |
| 351 | SH_NEXT |
| 352 | }; |
| 353 | |
| 354 | |
| 355 | /* This table defines the mappings from the BFD internal numbering |
| 356 | system to the opcodes internal flags system. |
| 357 | It is used by the functions defined below. |
| 358 | The prototypes for these SH specific functions are found in |
| 359 | sh-opc.h . */ |
| 360 | |
| 361 | static struct { unsigned long bfd_mach, arch, arch_up; } bfd_to_arch_table[] = |
| 362 | { |
| 363 | { bfd_mach_sh, arch_sh1, arch_sh_up }, |
| 364 | { bfd_mach_sh2, arch_sh2, arch_sh2_up }, |
| 365 | { bfd_mach_sh2e, arch_sh2e, arch_sh2e_up }, |
| 366 | { bfd_mach_sh_dsp, arch_sh_dsp, arch_sh_dsp_up }, |
| 367 | { bfd_mach_sh2a, arch_sh2a, arch_sh2a_up }, |
| 368 | { bfd_mach_sh2a_nofpu, arch_sh2a_nofpu, arch_sh2a_nofpu_up }, |
| 369 | |
| 370 | { bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu, arch_sh2a_nofpu_or_sh4_nommu_nofpu, arch_sh2a_nofpu_or_sh4_nommu_nofpu_up }, |
| 371 | { bfd_mach_sh2a_nofpu_or_sh3_nommu, arch_sh2a_nofpu_or_sh3_nommu, arch_sh2a_nofpu_or_sh3_nommu_up }, |
| 372 | { bfd_mach_sh2a_or_sh4, arch_sh2a_or_sh4, arch_sh2a_or_sh4_up }, |
| 373 | { bfd_mach_sh2a_or_sh3e, arch_sh2a_or_sh3e, arch_sh2a_or_sh3e_up }, |
| 374 | |
| 375 | { bfd_mach_sh3, arch_sh3, arch_sh3_up }, |
| 376 | { bfd_mach_sh3_nommu, arch_sh3_nommu, arch_sh3_nommu_up }, |
| 377 | { bfd_mach_sh3_dsp, arch_sh3_dsp, arch_sh3_dsp_up }, |
| 378 | { bfd_mach_sh3e, arch_sh3e, arch_sh3e_up }, |
| 379 | { bfd_mach_sh4, arch_sh4, arch_sh4_up }, |
| 380 | { bfd_mach_sh4a, arch_sh4a, arch_sh4a_up }, |
| 381 | { bfd_mach_sh4al_dsp, arch_sh4al_dsp, arch_sh4al_dsp_up }, |
| 382 | { bfd_mach_sh4_nofpu, arch_sh4_nofpu, arch_sh4_nofpu_up }, |
| 383 | { bfd_mach_sh4_nommu_nofpu, arch_sh4_nommu_nofpu, arch_sh4_nommu_nofpu_up }, |
| 384 | { bfd_mach_sh4a_nofpu, arch_sh4a_nofpu, arch_sh4a_nofpu_up }, |
| 385 | { 0, 0, 0 } /* Terminator. */ |
| 386 | }; |
| 387 | |
| 388 | |
| 389 | /* Convert a BFD mach number into the right opcodes arch flags |
| 390 | using the table above. */ |
| 391 | |
| 392 | unsigned int |
| 393 | sh_get_arch_from_bfd_mach (unsigned long mach) |
| 394 | { |
| 395 | int i = 0; |
| 396 | |
| 397 | while (bfd_to_arch_table[i].bfd_mach != 0) |
| 398 | if (bfd_to_arch_table[i].bfd_mach == mach) |
| 399 | return bfd_to_arch_table[i].arch; |
| 400 | else |
| 401 | i++; |
| 402 | |
| 403 | /* Machine not found. */ |
| 404 | BFD_FAIL(); |
| 405 | |
| 406 | return SH_ARCH_UNKNOWN_ARCH; |
| 407 | } |
| 408 | |
| 409 | |
| 410 | /* Convert a BFD mach number into a set of opcodes arch flags |
| 411 | describing all the compatible architectures (i.e. arch_up) |
| 412 | using the table above. */ |
| 413 | |
| 414 | unsigned int |
| 415 | sh_get_arch_up_from_bfd_mach (unsigned long mach) |
| 416 | { |
| 417 | int i = 0; |
| 418 | |
| 419 | while (bfd_to_arch_table[i].bfd_mach != 0) |
| 420 | if (bfd_to_arch_table[i].bfd_mach == mach) |
| 421 | return bfd_to_arch_table[i].arch_up; |
| 422 | else |
| 423 | i++; |
| 424 | |
| 425 | /* Machine not found. */ |
| 426 | BFD_FAIL(); |
| 427 | |
| 428 | return SH_ARCH_UNKNOWN_ARCH; |
| 429 | } |
| 430 | |
| 431 | |
| 432 | /* Convert an arbitary arch_set - not necessarily corresponding |
| 433 | directly to anything in the table above - to the most generic |
| 434 | architecture which supports all the required features, and |
| 435 | return the corresponding BFD mach. */ |
| 436 | |
| 437 | unsigned long |
| 438 | sh_get_bfd_mach_from_arch_set (unsigned int arch_set) |
| 439 | { |
| 440 | unsigned long result = 0; |
| 441 | unsigned int best = ~arch_set; |
| 442 | unsigned int co_mask = ~0; |
| 443 | int i = 0; |
| 444 | |
| 445 | /* If arch_set permits variants with no coprocessor then do not allow |
| 446 | the other irrelevant co-processor bits to influence the choice: |
| 447 | e.g. if dsp is disallowed by arch_set, then the algorithm would |
| 448 | prefer fpu variants over nofpu variants because they also disallow |
| 449 | dsp - even though the nofpu would be the most correct choice. |
| 450 | This assumes that EVERY fpu/dsp variant has a no-coprocessor |
| 451 | counter-part, or their non-fpu/dsp instructions do not have the |
| 452 | no co-processor bit set. */ |
| 453 | if (arch_set & arch_sh_no_co) |
| 454 | co_mask = ~(arch_sh_sp_fpu | arch_sh_dp_fpu | arch_sh_has_dsp); |
| 455 | |
| 456 | while (bfd_to_arch_table[i].bfd_mach != 0) |
| 457 | { |
| 458 | unsigned int try = bfd_to_arch_table[i].arch_up & co_mask; |
| 459 | |
| 460 | /* Conceptually: Find the architecture with the least number |
| 461 | of extra features or, if they have the same number, then |
| 462 | the greatest number of required features. Disregard |
| 463 | architectures where the required features alone do |
| 464 | not describe a valid architecture. */ |
| 465 | if (((try & ~arch_set) < (best & ~arch_set) |
| 466 | || ((try & ~arch_set) == (best & ~arch_set) |
| 467 | && (~try & arch_set) < (~best & arch_set))) |
| 468 | && SH_MERGE_ARCH_SET_VALID (try, arch_set)) |
| 469 | { |
| 470 | result = bfd_to_arch_table[i].bfd_mach; |
| 471 | best = try; |
| 472 | } |
| 473 | |
| 474 | i++; |
| 475 | } |
| 476 | |
| 477 | /* This might happen if a new variant is added to sh-opc.h |
| 478 | but no corresponding entry is added to the table above. */ |
| 479 | BFD_ASSERT (result != 0); |
| 480 | |
| 481 | return result; |
| 482 | } |