1/* BFD library support routines for the Renesas / SuperH SH architecture. 2 Copyright 1993, 1994, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005 3 Free Software Foundation, Inc. 4 Hacked by Steve Chamberlain of Cygnus Support. 5 6 This file is part of BFD, the Binary File Descriptor library. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; if not, write to the Free Software 20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 21 22#include "bfd.h" 23#include "sysdep.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 arch_info_struct + 19 47#define SH64_NEXT NULL 48 49static const bfd_arch_info_type arch_info_struct[] = 50{ 51 { 52 32, /* 32 bits in a word. */ 53 32, /* 32 bits in an address. */ 54 8, /* 8 bits in a byte. */ 55 bfd_arch_sh, 56 bfd_mach_sh2, 57 "sh", /* Architecture name. */ 58 "sh2", /* Machine name. */ 59 1, 60 FALSE, /* Not the default. */ 61 bfd_default_compatible, 62 bfd_default_scan, 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 SH2E_NEXT 78 }, 79 { 80 32, /* 32 bits in a word. */ 81 32, /* 32 bits in an address. */ 82 8, /* 8 bits in a byte. */ 83 bfd_arch_sh, 84 bfd_mach_sh_dsp, 85 "sh", /* Architecture name. */ 86 "sh-dsp", /* Machine name. */ 87 1, 88 FALSE, /* Not the default. */ 89 bfd_default_compatible, 90 bfd_default_scan, 91 SH_DSP_NEXT 92 }, 93 { 94 32, /* 32 bits in a word. */ 95 32, /* 32 bits in an address. */ 96 8, /* 8 bits in a byte. */ 97 bfd_arch_sh, 98 bfd_mach_sh3, 99 "sh", /* Architecture name. */ 100 "sh3", /* Machine name. */ 101 1, 102 FALSE, /* Not the default. */ 103 bfd_default_compatible, 104 bfd_default_scan, 105 SH3_NEXT 106 }, 107 { 108 32, /* 32 bits in a word. */ 109 32, /* 32 bits in an address. */ 110 8, /* 8 bits in a byte. */ 111 bfd_arch_sh, 112 bfd_mach_sh3_nommu, 113 "sh", /* Architecture name. */ 114 "sh3-nommu", /* Machine name. */ 115 1, 116 FALSE, /* Not the default. */ 117 bfd_default_compatible, 118 bfd_default_scan, 119 SH3_NOMMU_NEXT 120 }, 121 { 122 32, /* 32 bits in a word. */ 123 32, /* 32 bits in an address. */ 124 8, /* 8 bits in a byte. */ 125 bfd_arch_sh, 126 bfd_mach_sh3_dsp, 127 "sh", /* Architecture name. */ 128 "sh3-dsp", /* Machine name. */ 129 1, 130 FALSE, /* Not the default. */ 131 bfd_default_compatible, 132 bfd_default_scan, 133 SH3_DSP_NEXT 134 }, 135 { 136 32, /* 32 bits in a word. */ 137 32, /* 32 bits in an address. */ 138 8, /* 8 bits in a byte. */ 139 bfd_arch_sh, 140 bfd_mach_sh3e, 141 "sh", /* Architecture name. */ 142 "sh3e", /* Machine name. */ 143 1, 144 FALSE, /* Not the default. */ 145 bfd_default_compatible, 146 bfd_default_scan, 147 SH3E_NEXT 148 }, 149 { 150 32, /* 32 bits in a word. */ 151 32, /* 32 bits in an address. */ 152 8, /* 8 bits in a byte. */ 153 bfd_arch_sh, 154 bfd_mach_sh4, 155 "sh", /* Architecture name. */ 156 "sh4", /* Machine name. */ 157 1, 158 FALSE, /* Not the default. */ 159 bfd_default_compatible, 160 bfd_default_scan, 161 SH4_NEXT 162 }, 163 { 164 32, /* 32 bits in a word. */ 165 32, /* 32 bits in an address. */ 166 8, /* 8 bits in a byte. */ 167 bfd_arch_sh, 168 bfd_mach_sh4a, 169 "sh", /* Architecture name. */ 170 "sh4a", /* Machine name. */ 171 1, 172 FALSE, /* Not the default. */ 173 bfd_default_compatible, 174 bfd_default_scan, 175 SH4A_NEXT 176 }, 177 { 178 32, /* 32 bits in a word. */ 179 32, /* 32 bits in an address. */ 180 8, /* 8 bits in a byte. */ 181 bfd_arch_sh, 182 bfd_mach_sh4al_dsp, 183 "sh", /* Architecture name. */ 184 "sh4al-dsp", /* Machine name. */ 185 1, 186 FALSE, /* Not the default. */ 187 bfd_default_compatible, 188 bfd_default_scan, 189 SH4AL_DSP_NEXT 190 }, 191 { 192 32, /* 32 bits in a word. */ 193 32, /* 32 bits in an address. */ 194 8, /* 8 bits in a byte. */ 195 bfd_arch_sh, 196 bfd_mach_sh4_nofpu, 197 "sh", /* Architecture name. */ 198 "sh4-nofpu", /* Machine name. */ 199 1, 200 FALSE, /* Not the default. */ 201 bfd_default_compatible, 202 bfd_default_scan, 203 SH4_NOFPU_NEXT 204 }, 205 { 206 32, /* 32 bits in a word. */ 207 32, /* 32 bits in an address. */ 208 8, /* 8 bits in a byte. */ 209 bfd_arch_sh, 210 bfd_mach_sh4_nommu_nofpu, 211 "sh", /* Architecture name. */ 212 "sh4-nommu-nofpu", /* Machine name. */ 213 1, 214 FALSE, /* Not the default. */ 215 bfd_default_compatible, 216 bfd_default_scan, 217 SH4_NOMMU_NOFPU_NEXT 218 }, 219 { 220 32, /* 32 bits in a word. */ 221 32, /* 32 bits in an address. */ 222 8, /* 8 bits in a byte. */ 223 bfd_arch_sh, 224 bfd_mach_sh4a_nofpu, 225 "sh", /* Architecture name. */ 226 "sh4a-nofpu", /* Machine name. */ 227 1, 228 FALSE, /* Not the default. */ 229 bfd_default_compatible, 230 bfd_default_scan, 231 SH4A_NOFPU_NEXT 232 }, 233 { 234 32, /* 32 bits in a word. */ 235 32, /* 32 bits in an address. */ 236 8, /* 8 bits in a byte. */ 237 bfd_arch_sh, 238 bfd_mach_sh2a, 239 "sh", /* Architecture name. */ 240 "sh2a", /* Machine name. */ 241 1, 242 FALSE, /* Not the default. */ 243 bfd_default_compatible, 244 bfd_default_scan, 245 SH2A_NEXT 246 }, 247 { 248 32, /* 32 bits in a word. */ 249 32, /* 32 bits in an address. */ 250 8, /* 8 bits in a byte. */ 251 bfd_arch_sh, 252 bfd_mach_sh2a_nofpu, 253 "sh", /* Architecture name. */ 254 "sh2a-nofpu", /* Machine name. */ 255 1, 256 FALSE, /* Not the default. */ 257 bfd_default_compatible, 258 bfd_default_scan, 259 SH2A_NOFPU_NEXT 260 }, 261 { 262 32, /* 32 bits in a word. */ 263 32, /* 32 bits in an address. */ 264 8, /* 8 bits in a byte. */ 265 bfd_arch_sh, 266 bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu, 267 "sh", /* Architecture name. */ 268 "sh2a-nofpu-or-sh4-nommu-nofpu", /* Machine name. */ 269 1, 270 FALSE, /* Not the default. */ 271 bfd_default_compatible, 272 bfd_default_scan, 273 SH2A_NOFPU_OR_SH4_NOMMU_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_sh3_nommu, 281 "sh", /* Architecture name. . */ 282 "sh2a-nofpu-or-sh3-nommu", /* Machine name. */ 283 1, 284 FALSE, /* Not the default. */ 285 bfd_default_compatible, 286 bfd_default_scan, 287 SH2A_NOFPU_OR_SH3_NOMMU_NEXT 288 }, 289 { 290 32, /* 32 bits in a word. */ 291 32, /* 32 bits in an address. */ 292 8, /* 8 bits in a byte. */ 293 bfd_arch_sh, 294 bfd_mach_sh2a_or_sh4, 295 "sh", /* Architecture name. */ 296 "sh2a-or-sh4", /* Machine name. */ 297 1, 298 FALSE, /* Not the default. */ 299 bfd_default_compatible, 300 bfd_default_scan, 301 SH2A_OR_SH4_NEXT 302 }, 303 { 304 32, /* 32 bits in a word. */ 305 32, /* 32 bits in an address. */ 306 8, /* 8 bits in a byte. */ 307 bfd_arch_sh, 308 bfd_mach_sh2a_or_sh3e, 309 "sh", /* Architecture name. */ 310 "sh2a-or-sh3e", /* Machine name. */ 311 1, 312 FALSE, /* Not the default. */ 313 bfd_default_compatible, 314 bfd_default_scan, 315 SH2A_OR_SH3E_NEXT 316 }, 317 { 318 64, /* 64 bits in a word. */ 319 64, /* 64 bits in an address. */ 320 8, /* 8 bits in a byte. */ 321 bfd_arch_sh, 322 bfd_mach_sh5, 323 "sh", /* Architecture name. */ 324 "sh5", /* Machine name. */ 325 1, 326 FALSE, /* Not the default. */ 327 bfd_default_compatible, 328 bfd_default_scan, 329 SH64_NEXT 330 }, 331}; 332 333const bfd_arch_info_type bfd_sh_arch = 334{ 335 32, /* 32 bits in a word. */ 336 32, /* 32 bits in an address. */ 337 8, /* 8 bits in a byte. */ 338 bfd_arch_sh, 339 bfd_mach_sh, 340 "sh", /* Architecture name. */ 341 "sh", /* Machine name. */ 342 1, 343 TRUE, /* The default machine. */ 344 bfd_default_compatible, 345 bfd_default_scan, 346 SH_NEXT 347}; 348 349 350/* This table defines the mappings from the BFD internal numbering 351 system to the opcodes internal flags system. 352 It is used by the functions defined below. 353 The prototypes for these SH specific functions are found in 354 sh-opc.h . */ 355 356static struct { unsigned long bfd_mach, arch, arch_up; } bfd_to_arch_table[] = 357{ 358 { bfd_mach_sh, arch_sh1, arch_sh_up }, 359 { bfd_mach_sh2, arch_sh2, arch_sh2_up }, 360 { bfd_mach_sh2e, arch_sh2e, arch_sh2e_up }, 361 { bfd_mach_sh_dsp, arch_sh_dsp, arch_sh_dsp_up }, 362 { bfd_mach_sh2a, arch_sh2a, arch_sh2a_up }, 363 { bfd_mach_sh2a_nofpu, arch_sh2a_nofpu, arch_sh2a_nofpu_up }, 364 365 { bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu, arch_sh2a_nofpu_or_sh4_nommu_nofpu, arch_sh2a_nofpu_or_sh4_nommu_nofpu_up }, 366 { bfd_mach_sh2a_nofpu_or_sh3_nommu, arch_sh2a_nofpu_or_sh3_nommu, arch_sh2a_nofpu_or_sh3_nommu_up }, 367 { bfd_mach_sh2a_or_sh4, arch_sh2a_or_sh4, arch_sh2a_or_sh4_up }, 368 { bfd_mach_sh2a_or_sh3e, arch_sh2a_or_sh3e, arch_sh2a_or_sh3e_up }, 369 370 { bfd_mach_sh3, arch_sh3, arch_sh3_up }, 371 { bfd_mach_sh3_nommu, arch_sh3_nommu, arch_sh3_nommu_up }, 372 { bfd_mach_sh3_dsp, arch_sh3_dsp, arch_sh3_dsp_up }, 373 { bfd_mach_sh3e, arch_sh3e, arch_sh3e_up }, 374 { bfd_mach_sh4, arch_sh4, arch_sh4_up }, 375 { bfd_mach_sh4a, arch_sh4a, arch_sh4a_up }, 376 { bfd_mach_sh4al_dsp, arch_sh4al_dsp, arch_sh4al_dsp_up }, 377 { bfd_mach_sh4_nofpu, arch_sh4_nofpu, arch_sh4_nofpu_up }, 378 { bfd_mach_sh4_nommu_nofpu, arch_sh4_nommu_nofpu, arch_sh4_nommu_nofpu_up }, 379 { bfd_mach_sh4a_nofpu, arch_sh4a_nofpu, arch_sh4a_nofpu_up }, 380 { 0, 0, 0 } /* Terminator. */ 381}; 382 383 384/* Convert a BFD mach number into the right opcodes arch flags 385 using the table above. */ 386 387unsigned int 388sh_get_arch_from_bfd_mach (unsigned long mach) 389{ 390 int i = 0; 391 392 while (bfd_to_arch_table[i].bfd_mach != 0) 393 if (bfd_to_arch_table[i].bfd_mach == mach) 394 return bfd_to_arch_table[i].arch; 395 else 396 i++; 397 398 /* Machine not found. */ 399 BFD_FAIL(); 400 401 return SH_ARCH_UNKNOWN_ARCH; 402} 403 404 405/* Convert a BFD mach number into a set of opcodes arch flags 406 describing all the compatible architectures (i.e. arch_up) 407 using the table above. */ 408 409unsigned int 410sh_get_arch_up_from_bfd_mach (unsigned long mach) 411{ 412 int i = 0; 413 414 while (bfd_to_arch_table[i].bfd_mach != 0) 415 if (bfd_to_arch_table[i].bfd_mach == mach) 416 return bfd_to_arch_table[i].arch_up; 417 else 418 i++; 419 420 /* Machine not found. */ 421 BFD_FAIL(); 422 423 return SH_ARCH_UNKNOWN_ARCH; 424} 425 426 427/* Convert an arbitary arch_set - not necessarily corresponding 428 directly to anything in the table above - to the most generic 429 architecture which supports all the required features, and 430 return the corresponding BFD mach. */ 431 432unsigned long 433sh_get_bfd_mach_from_arch_set (unsigned int arch_set) 434{ 435 unsigned long result = 0; 436 unsigned int best = ~arch_set; 437 unsigned int co_mask = ~0; 438 int i = 0; 439 440 /* If arch_set permits variants with no coprocessor then do not allow 441 the other irrelevant co-processor bits to influence the choice: 442 e.g. if dsp is disallowed by arch_set, then the algorithm would 443 prefer fpu variants over nofpu variants because they also disallow 444 dsp - even though the nofpu would be the most correct choice. 445 This assumes that EVERY fpu/dsp variant has a no-coprocessor 446 counter-part, or their non-fpu/dsp instructions do not have the 447 no co-processor bit set. */ 448 if (arch_set & arch_sh_no_co) 449 co_mask = ~(arch_sh_sp_fpu | arch_sh_dp_fpu | arch_sh_has_dsp); 450 451 while (bfd_to_arch_table[i].bfd_mach != 0) 452 { 453 unsigned int try = bfd_to_arch_table[i].arch_up & co_mask; 454 455 /* Conceptually: Find the architecture with the least number 456 of extra features or, if they have the same number, then 457 the greatest number of required features. Disregard 458 architectures where the required features alone do 459 not describe a valid architecture. */ 460 if (((try & ~arch_set) < (best & ~arch_set) 461 || ((try & ~arch_set) == (best & ~arch_set) 462 && (~try & arch_set) < (~best & arch_set))) 463 && SH_MERGE_ARCH_SET_VALID (try, arch_set)) 464 { 465 result = bfd_to_arch_table[i].bfd_mach; 466 best = try; 467 } 468 469 i++; 470 } 471 472 /* This might happen if a new variant is added to sh-opc.h 473 but no corresponding entry is added to the table above. */ 474 BFD_ASSERT (result != 0); 475 476 return result; 477} 478 479 480/* Merge the architecture type of two BFD files, such that the 481 resultant architecture supports all the features required 482 by the two input BFDs. 483 If the input BFDs are multually incompatible - i.e. one uses 484 DSP while the other uses FPU - or there is no known architecture 485 that fits the requirements then an error is emitted. */ 486 487bfd_boolean 488sh_merge_bfd_arch (bfd *ibfd, bfd *obfd) 489{ 490 unsigned int old_arch, new_arch, merged_arch; 491 492 if (! _bfd_generic_verify_endian_match (ibfd, obfd)) 493 return FALSE; 494 495 old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd)); 496 new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd)); 497 498 merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch); 499 500 if (!SH_VALID_CO_ARCH_SET (merged_arch)) 501 { 502 (*_bfd_error_handler) 503 ("%B: uses %s instructions while previous modules use %s instructions", 504 ibfd, 505 SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point", 506 SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp"); 507 bfd_set_error (bfd_error_bad_value); 508 return FALSE; 509 } 510 else if (!SH_VALID_ARCH_SET (merged_arch)) 511 { 512 (*_bfd_error_handler) 513 ("internal error: merge of architecture '%s' with architecture '%s' produced unknown architecture\n", 514 bfd_printable_name (obfd), 515 bfd_printable_name (ibfd)); 516 bfd_set_error (bfd_error_bad_value); 517 return FALSE; 518 } 519 520 bfd_default_set_arch_mach (obfd, bfd_arch_sh, 521 sh_get_bfd_mach_from_arch_set (merged_arch)); 522 523 return TRUE; 524} 525