| 1 | /* Configurable Xtensa ISA support. |
| 2 | Copyright 2003, 2004 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 19 | |
| 20 | #include "bfd.h" |
| 21 | #include "sysdep.h" |
| 22 | #include "libbfd.h" |
| 23 | #include "xtensa-isa.h" |
| 24 | #include "xtensa-isa-internal.h" |
| 25 | |
| 26 | xtensa_isa_status xtisa_errno; |
| 27 | char xtisa_error_msg[1024]; |
| 28 | |
| 29 | |
| 30 | xtensa_isa_status |
| 31 | xtensa_isa_errno (xtensa_isa isa __attribute__ ((unused))) |
| 32 | { |
| 33 | return xtisa_errno; |
| 34 | } |
| 35 | |
| 36 | |
| 37 | char * |
| 38 | xtensa_isa_error_msg (xtensa_isa isa __attribute__ ((unused))) |
| 39 | { |
| 40 | return xtisa_error_msg; |
| 41 | } |
| 42 | |
| 43 | |
| 44 | #define CHECK_ALLOC(MEM,ERRVAL) \ |
| 45 | do { \ |
| 46 | if ((MEM) == 0) \ |
| 47 | { \ |
| 48 | xtisa_errno = xtensa_isa_out_of_memory; \ |
| 49 | strcpy (xtisa_error_msg, "out of memory"); \ |
| 50 | return (ERRVAL); \ |
| 51 | } \ |
| 52 | } while (0) |
| 53 | |
| 54 | #define CHECK_ALLOC_FOR_INIT(MEM,ERRVAL,ERRNO_P,ERROR_MSG_P) \ |
| 55 | do { \ |
| 56 | if ((MEM) == 0) \ |
| 57 | { \ |
| 58 | xtisa_errno = xtensa_isa_out_of_memory; \ |
| 59 | strcpy (xtisa_error_msg, "out of memory"); \ |
| 60 | if (ERRNO_P) *(ERRNO_P) = xtisa_errno; \ |
| 61 | if (ERROR_MSG_P) *(ERROR_MSG_P) = xtisa_error_msg; \ |
| 62 | return (ERRVAL); \ |
| 63 | } \ |
| 64 | } while (0) |
| 65 | |
| 66 | \f |
| 67 | /* Instruction buffers. */ |
| 68 | |
| 69 | int |
| 70 | xtensa_insnbuf_size (xtensa_isa isa) |
| 71 | { |
| 72 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 73 | return intisa->insnbuf_size; |
| 74 | } |
| 75 | |
| 76 | |
| 77 | xtensa_insnbuf |
| 78 | xtensa_insnbuf_alloc (xtensa_isa isa) |
| 79 | { |
| 80 | xtensa_insnbuf result = (xtensa_insnbuf) |
| 81 | malloc (xtensa_insnbuf_size (isa) * sizeof (xtensa_insnbuf_word)); |
| 82 | CHECK_ALLOC (result, 0); |
| 83 | return result; |
| 84 | } |
| 85 | |
| 86 | |
| 87 | void |
| 88 | xtensa_insnbuf_free (xtensa_isa isa __attribute__ ((unused)), |
| 89 | xtensa_insnbuf buf) |
| 90 | { |
| 91 | free (buf); |
| 92 | } |
| 93 | |
| 94 | |
| 95 | /* Given <byte_index>, the index of a byte in a xtensa_insnbuf, our |
| 96 | internal representation of a xtensa instruction word, return the index of |
| 97 | its word and the bit index of its low order byte in the xtensa_insnbuf. */ |
| 98 | |
| 99 | static inline int |
| 100 | byte_to_word_index (int byte_index) |
| 101 | { |
| 102 | return byte_index / sizeof (xtensa_insnbuf_word); |
| 103 | } |
| 104 | |
| 105 | |
| 106 | static inline int |
| 107 | byte_to_bit_index (int byte_index) |
| 108 | { |
| 109 | return (byte_index & 0x3) * 8; |
| 110 | } |
| 111 | |
| 112 | |
| 113 | /* Copy an instruction in the 32-bit words pointed at by "insn" to |
| 114 | characters pointed at by "cp". This is more complicated than you |
| 115 | might think because we want 16-bit instructions in bytes 2 & 3 for |
| 116 | big-endian configurations. This function allows us to specify |
| 117 | which byte in "insn" to start with and which way to increment, |
| 118 | allowing trivial implementation for both big- and little-endian |
| 119 | configurations....and it seems to make pretty good code for |
| 120 | both. */ |
| 121 | |
| 122 | int |
| 123 | xtensa_insnbuf_to_chars (xtensa_isa isa, const xtensa_insnbuf insn, char *cp, |
| 124 | int num_chars) |
| 125 | { |
| 126 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 127 | int insn_size = xtensa_isa_maxlength (isa); |
| 128 | int fence_post, start, increment, i, byte_count; |
| 129 | xtensa_format fmt; |
| 130 | |
| 131 | if (num_chars == 0) |
| 132 | num_chars = insn_size; |
| 133 | |
| 134 | if (intisa->is_big_endian) |
| 135 | { |
| 136 | start = insn_size - 1; |
| 137 | increment = -1; |
| 138 | } |
| 139 | else |
| 140 | { |
| 141 | start = 0; |
| 142 | increment = 1; |
| 143 | } |
| 144 | |
| 145 | /* Find the instruction format. Do nothing if the buffer does not contain |
| 146 | a valid instruction since we need to know how many bytes to copy. */ |
| 147 | fmt = xtensa_format_decode (isa, insn); |
| 148 | if (fmt == XTENSA_UNDEFINED) |
| 149 | return XTENSA_UNDEFINED; |
| 150 | |
| 151 | byte_count = xtensa_format_length (isa, fmt); |
| 152 | if (byte_count == XTENSA_UNDEFINED) |
| 153 | return XTENSA_UNDEFINED; |
| 154 | |
| 155 | if (byte_count > num_chars) |
| 156 | { |
| 157 | xtisa_errno = xtensa_isa_buffer_overflow; |
| 158 | strcpy (xtisa_error_msg, "output buffer too small for instruction"); |
| 159 | return XTENSA_UNDEFINED; |
| 160 | } |
| 161 | |
| 162 | fence_post = start + (byte_count * increment); |
| 163 | |
| 164 | for (i = start; i != fence_post; i += increment, ++cp) |
| 165 | { |
| 166 | int word_inx = byte_to_word_index (i); |
| 167 | int bit_inx = byte_to_bit_index (i); |
| 168 | |
| 169 | *cp = (insn[word_inx] >> bit_inx) & 0xff; |
| 170 | } |
| 171 | |
| 172 | return byte_count; |
| 173 | } |
| 174 | |
| 175 | |
| 176 | /* Inward conversion from byte stream to xtensa_insnbuf. See |
| 177 | xtensa_insnbuf_to_chars for a discussion of why this is complicated |
| 178 | by endianness. */ |
| 179 | |
| 180 | void |
| 181 | xtensa_insnbuf_from_chars (xtensa_isa isa, xtensa_insnbuf insn, const char *cp, |
| 182 | int num_chars) |
| 183 | { |
| 184 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 185 | int max_size, insn_size, fence_post, start, increment, i; |
| 186 | |
| 187 | max_size = xtensa_isa_maxlength (isa); |
| 188 | |
| 189 | /* Decode the instruction length so we know how many bytes to read. */ |
| 190 | insn_size = (intisa->length_decode_fn) (cp); |
| 191 | if (insn_size == XTENSA_UNDEFINED) |
| 192 | { |
| 193 | /* This should never happen when the byte stream contains a |
| 194 | valid instruction. Just read the maximum number of bytes.... */ |
| 195 | insn_size = max_size; |
| 196 | } |
| 197 | |
| 198 | if (num_chars == 0 || num_chars > insn_size) |
| 199 | num_chars = insn_size; |
| 200 | |
| 201 | if (intisa->is_big_endian) |
| 202 | { |
| 203 | start = max_size - 1; |
| 204 | increment = -1; |
| 205 | } |
| 206 | else |
| 207 | { |
| 208 | start = 0; |
| 209 | increment = 1; |
| 210 | } |
| 211 | |
| 212 | fence_post = start + (num_chars * increment); |
| 213 | memset (insn, 0, xtensa_insnbuf_size (isa) * sizeof (xtensa_insnbuf_word)); |
| 214 | |
| 215 | for (i = start; i != fence_post; i += increment, ++cp) |
| 216 | { |
| 217 | int word_inx = byte_to_word_index (i); |
| 218 | int bit_inx = byte_to_bit_index (i); |
| 219 | |
| 220 | insn[word_inx] |= (*cp & 0xff) << bit_inx; |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | |
| 225 | \f |
| 226 | /* ISA information. */ |
| 227 | |
| 228 | extern xtensa_isa_internal xtensa_modules; |
| 229 | |
| 230 | xtensa_isa |
| 231 | xtensa_isa_init (xtensa_isa_status *errno_p, char **error_msg_p) |
| 232 | { |
| 233 | xtensa_isa_internal *isa = &xtensa_modules; |
| 234 | int n, is_user; |
| 235 | |
| 236 | /* Set up the opcode name lookup table. */ |
| 237 | isa->opname_lookup_table = |
| 238 | bfd_malloc (isa->num_opcodes * sizeof (xtensa_lookup_entry)); |
| 239 | CHECK_ALLOC_FOR_INIT (isa->opname_lookup_table, NULL, errno_p, error_msg_p); |
| 240 | for (n = 0; n < isa->num_opcodes; n++) |
| 241 | { |
| 242 | isa->opname_lookup_table[n].key = isa->opcodes[n].name; |
| 243 | isa->opname_lookup_table[n].u.opcode = n; |
| 244 | } |
| 245 | qsort (isa->opname_lookup_table, isa->num_opcodes, |
| 246 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| 247 | |
| 248 | /* Set up the state name lookup table. */ |
| 249 | isa->state_lookup_table = |
| 250 | bfd_malloc (isa->num_states * sizeof (xtensa_lookup_entry)); |
| 251 | CHECK_ALLOC_FOR_INIT (isa->state_lookup_table, NULL, errno_p, error_msg_p); |
| 252 | for (n = 0; n < isa->num_states; n++) |
| 253 | { |
| 254 | isa->state_lookup_table[n].key = isa->states[n].name; |
| 255 | isa->state_lookup_table[n].u.state = n; |
| 256 | } |
| 257 | qsort (isa->state_lookup_table, isa->num_states, |
| 258 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| 259 | |
| 260 | /* Set up the sysreg name lookup table. */ |
| 261 | isa->sysreg_lookup_table = |
| 262 | bfd_malloc (isa->num_sysregs * sizeof (xtensa_lookup_entry)); |
| 263 | CHECK_ALLOC_FOR_INIT (isa->sysreg_lookup_table, NULL, errno_p, error_msg_p); |
| 264 | for (n = 0; n < isa->num_sysregs; n++) |
| 265 | { |
| 266 | isa->sysreg_lookup_table[n].key = isa->sysregs[n].name; |
| 267 | isa->sysreg_lookup_table[n].u.sysreg = n; |
| 268 | } |
| 269 | qsort (isa->sysreg_lookup_table, isa->num_sysregs, |
| 270 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| 271 | |
| 272 | /* Set up the user & system sysreg number tables. */ |
| 273 | for (is_user = 0; is_user < 2; is_user++) |
| 274 | { |
| 275 | isa->sysreg_table[is_user] = |
| 276 | bfd_malloc ((isa->max_sysreg_num[is_user] + 1) |
| 277 | * sizeof (xtensa_sysreg)); |
| 278 | CHECK_ALLOC_FOR_INIT (isa->sysreg_table[is_user], NULL, |
| 279 | errno_p, error_msg_p); |
| 280 | |
| 281 | for (n = 0; n <= isa->max_sysreg_num[is_user]; n++) |
| 282 | isa->sysreg_table[is_user][n] = XTENSA_UNDEFINED; |
| 283 | } |
| 284 | for (n = 0; n < isa->num_sysregs; n++) |
| 285 | { |
| 286 | xtensa_sysreg_internal *sreg = &isa->sysregs[n]; |
| 287 | is_user = sreg->is_user; |
| 288 | |
| 289 | isa->sysreg_table[is_user][sreg->number] = n; |
| 290 | } |
| 291 | |
| 292 | /* Set up the interface lookup table. */ |
| 293 | isa->interface_lookup_table = |
| 294 | bfd_malloc (isa->num_interfaces * sizeof (xtensa_lookup_entry)); |
| 295 | CHECK_ALLOC_FOR_INIT (isa->interface_lookup_table, NULL, errno_p, |
| 296 | error_msg_p); |
| 297 | for (n = 0; n < isa->num_interfaces; n++) |
| 298 | { |
| 299 | isa->interface_lookup_table[n].key = isa->interfaces[n].name; |
| 300 | isa->interface_lookup_table[n].u.intf = n; |
| 301 | } |
| 302 | qsort (isa->interface_lookup_table, isa->num_interfaces, |
| 303 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| 304 | |
| 305 | /* Set up the funcUnit lookup table. */ |
| 306 | isa->funcUnit_lookup_table = |
| 307 | bfd_malloc (isa->num_funcUnits * sizeof (xtensa_lookup_entry)); |
| 308 | CHECK_ALLOC_FOR_INIT (isa->funcUnit_lookup_table, NULL, errno_p, |
| 309 | error_msg_p); |
| 310 | for (n = 0; n < isa->num_funcUnits; n++) |
| 311 | { |
| 312 | isa->funcUnit_lookup_table[n].key = isa->funcUnits[n].name; |
| 313 | isa->funcUnit_lookup_table[n].u.fun = n; |
| 314 | } |
| 315 | qsort (isa->funcUnit_lookup_table, isa->num_funcUnits, |
| 316 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| 317 | |
| 318 | isa->insnbuf_size = ((isa->insn_size + sizeof (xtensa_insnbuf_word) - 1) / |
| 319 | sizeof (xtensa_insnbuf_word)); |
| 320 | |
| 321 | return (xtensa_isa) isa; |
| 322 | } |
| 323 | |
| 324 | |
| 325 | void |
| 326 | xtensa_isa_free (xtensa_isa isa) |
| 327 | { |
| 328 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 329 | int n; |
| 330 | |
| 331 | /* With this version of the code, the xtensa_isa structure is not |
| 332 | dynamically allocated, so this function is not essential. Free |
| 333 | the memory allocated by xtensa_isa_init and restore the xtensa_isa |
| 334 | structure to its initial state. */ |
| 335 | |
| 336 | if (intisa->opname_lookup_table) |
| 337 | { |
| 338 | free (intisa->opname_lookup_table); |
| 339 | intisa->opname_lookup_table = 0; |
| 340 | } |
| 341 | |
| 342 | if (intisa->state_lookup_table) |
| 343 | { |
| 344 | free (intisa->state_lookup_table); |
| 345 | intisa->state_lookup_table = 0; |
| 346 | } |
| 347 | |
| 348 | if (intisa->sysreg_lookup_table) |
| 349 | { |
| 350 | free (intisa->sysreg_lookup_table); |
| 351 | intisa->sysreg_lookup_table = 0; |
| 352 | } |
| 353 | for (n = 0; n < 2; n++) |
| 354 | { |
| 355 | if (intisa->sysreg_table[n]) |
| 356 | { |
| 357 | free (intisa->sysreg_table[n]); |
| 358 | intisa->sysreg_table[n] = 0; |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | if (intisa->interface_lookup_table) |
| 363 | { |
| 364 | free (intisa->interface_lookup_table); |
| 365 | intisa->interface_lookup_table = 0; |
| 366 | } |
| 367 | |
| 368 | if (intisa->funcUnit_lookup_table) |
| 369 | { |
| 370 | free (intisa->funcUnit_lookup_table); |
| 371 | intisa->funcUnit_lookup_table = 0; |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | |
| 376 | int |
| 377 | xtensa_isa_name_compare (const void *v1, const void *v2) |
| 378 | { |
| 379 | xtensa_lookup_entry *e1 = (xtensa_lookup_entry *) v1; |
| 380 | xtensa_lookup_entry *e2 = (xtensa_lookup_entry *) v2; |
| 381 | |
| 382 | return strcasecmp (e1->key, e2->key); |
| 383 | } |
| 384 | |
| 385 | |
| 386 | int |
| 387 | xtensa_isa_maxlength (xtensa_isa isa) |
| 388 | { |
| 389 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 390 | return intisa->insn_size; |
| 391 | } |
| 392 | |
| 393 | |
| 394 | int |
| 395 | xtensa_isa_length_from_chars (xtensa_isa isa, const char *cp) |
| 396 | { |
| 397 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 398 | return (intisa->length_decode_fn) (cp); |
| 399 | } |
| 400 | |
| 401 | |
| 402 | int |
| 403 | xtensa_isa_num_pipe_stages (xtensa_isa isa) |
| 404 | { |
| 405 | int num_opcodes, num_uses; |
| 406 | xtensa_opcode opcode; |
| 407 | xtensa_funcUnit_use *use; |
| 408 | int i, stage, max_stage = XTENSA_UNDEFINED; |
| 409 | |
| 410 | num_opcodes = xtensa_isa_num_opcodes (isa); |
| 411 | for (opcode = 0; opcode < num_opcodes; opcode++) |
| 412 | { |
| 413 | num_uses = xtensa_opcode_num_funcUnit_uses (isa, opcode); |
| 414 | for (i = 0; i < num_uses; i++) |
| 415 | { |
| 416 | use = xtensa_opcode_funcUnit_use (isa, opcode, i); |
| 417 | stage = use->stage; |
| 418 | if (stage > max_stage) |
| 419 | max_stage = stage; |
| 420 | } |
| 421 | } |
| 422 | |
| 423 | return max_stage + 1; |
| 424 | } |
| 425 | |
| 426 | |
| 427 | int |
| 428 | xtensa_isa_num_formats (xtensa_isa isa) |
| 429 | { |
| 430 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 431 | return intisa->num_formats; |
| 432 | } |
| 433 | |
| 434 | |
| 435 | int |
| 436 | xtensa_isa_num_opcodes (xtensa_isa isa) |
| 437 | { |
| 438 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 439 | return intisa->num_opcodes; |
| 440 | } |
| 441 | |
| 442 | |
| 443 | int |
| 444 | xtensa_isa_num_regfiles (xtensa_isa isa) |
| 445 | { |
| 446 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 447 | return intisa->num_regfiles; |
| 448 | } |
| 449 | |
| 450 | |
| 451 | int |
| 452 | xtensa_isa_num_states (xtensa_isa isa) |
| 453 | { |
| 454 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 455 | return intisa->num_states; |
| 456 | } |
| 457 | |
| 458 | |
| 459 | int |
| 460 | xtensa_isa_num_sysregs (xtensa_isa isa) |
| 461 | { |
| 462 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 463 | return intisa->num_sysregs; |
| 464 | } |
| 465 | |
| 466 | |
| 467 | int |
| 468 | xtensa_isa_num_interfaces (xtensa_isa isa) |
| 469 | { |
| 470 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 471 | return intisa->num_interfaces; |
| 472 | } |
| 473 | |
| 474 | |
| 475 | int |
| 476 | xtensa_isa_num_funcUnits (xtensa_isa isa) |
| 477 | { |
| 478 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 479 | return intisa->num_funcUnits; |
| 480 | } |
| 481 | |
| 482 | |
| 483 | \f |
| 484 | /* Instruction formats. */ |
| 485 | |
| 486 | |
| 487 | #define CHECK_FORMAT(INTISA,FMT,ERRVAL) \ |
| 488 | do { \ |
| 489 | if ((FMT) < 0 || (FMT) >= (INTISA)->num_formats) \ |
| 490 | { \ |
| 491 | xtisa_errno = xtensa_isa_bad_format; \ |
| 492 | strcpy (xtisa_error_msg, "invalid format specifier"); \ |
| 493 | return (ERRVAL); \ |
| 494 | } \ |
| 495 | } while (0) |
| 496 | |
| 497 | |
| 498 | #define CHECK_SLOT(INTISA,FMT,SLOT,ERRVAL) \ |
| 499 | do { \ |
| 500 | if ((SLOT) < 0 || (SLOT) >= (INTISA)->formats[FMT].num_slots) \ |
| 501 | { \ |
| 502 | xtisa_errno = xtensa_isa_bad_slot; \ |
| 503 | strcpy (xtisa_error_msg, "invalid slot specifier"); \ |
| 504 | return (ERRVAL); \ |
| 505 | } \ |
| 506 | } while (0) |
| 507 | |
| 508 | |
| 509 | const char * |
| 510 | xtensa_format_name (xtensa_isa isa, xtensa_format fmt) |
| 511 | { |
| 512 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 513 | CHECK_FORMAT (intisa, fmt, NULL); |
| 514 | return intisa->formats[fmt].name; |
| 515 | } |
| 516 | |
| 517 | |
| 518 | xtensa_format |
| 519 | xtensa_format_lookup (xtensa_isa isa, const char *fmtname) |
| 520 | { |
| 521 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 522 | int fmt; |
| 523 | |
| 524 | if (!fmtname || !*fmtname) |
| 525 | { |
| 526 | xtisa_errno = xtensa_isa_bad_format; |
| 527 | strcpy (xtisa_error_msg, "invalid format name"); |
| 528 | return XTENSA_UNDEFINED; |
| 529 | } |
| 530 | |
| 531 | for (fmt = 0; fmt < intisa->num_formats; fmt++) |
| 532 | { |
| 533 | if (strcasecmp (fmtname, intisa->formats[fmt].name) == 0) |
| 534 | return fmt; |
| 535 | } |
| 536 | |
| 537 | xtisa_errno = xtensa_isa_bad_format; |
| 538 | sprintf (xtisa_error_msg, "format \"%s\" not recognized", fmtname); |
| 539 | return XTENSA_UNDEFINED; |
| 540 | } |
| 541 | |
| 542 | |
| 543 | xtensa_format |
| 544 | xtensa_format_decode (xtensa_isa isa, const xtensa_insnbuf insn) |
| 545 | { |
| 546 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 547 | xtensa_format fmt; |
| 548 | |
| 549 | fmt = (intisa->format_decode_fn) (insn); |
| 550 | if (fmt != XTENSA_UNDEFINED) |
| 551 | return fmt; |
| 552 | |
| 553 | xtisa_errno = xtensa_isa_bad_format; |
| 554 | strcpy (xtisa_error_msg, "cannot decode instruction format"); |
| 555 | return XTENSA_UNDEFINED; |
| 556 | } |
| 557 | |
| 558 | |
| 559 | int |
| 560 | xtensa_format_encode (xtensa_isa isa, xtensa_format fmt, xtensa_insnbuf insn) |
| 561 | { |
| 562 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 563 | CHECK_FORMAT (intisa, fmt, -1); |
| 564 | (*intisa->formats[fmt].encode_fn) (insn); |
| 565 | return 0; |
| 566 | } |
| 567 | |
| 568 | |
| 569 | int |
| 570 | xtensa_format_length (xtensa_isa isa, xtensa_format fmt) |
| 571 | { |
| 572 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 573 | CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED); |
| 574 | return intisa->formats[fmt].length; |
| 575 | } |
| 576 | |
| 577 | |
| 578 | int |
| 579 | xtensa_format_num_slots (xtensa_isa isa, xtensa_format fmt) |
| 580 | { |
| 581 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 582 | CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED); |
| 583 | return intisa->formats[fmt].num_slots; |
| 584 | } |
| 585 | |
| 586 | |
| 587 | xtensa_opcode |
| 588 | xtensa_format_slot_nop_opcode (xtensa_isa isa, xtensa_format fmt, int slot) |
| 589 | { |
| 590 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 591 | int slot_id; |
| 592 | |
| 593 | CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED); |
| 594 | CHECK_SLOT (intisa, fmt, slot, XTENSA_UNDEFINED); |
| 595 | |
| 596 | slot_id = intisa->formats[fmt].slot_id[slot]; |
| 597 | return xtensa_opcode_lookup (isa, intisa->slots[slot_id].nop_name); |
| 598 | } |
| 599 | |
| 600 | |
| 601 | int |
| 602 | xtensa_format_get_slot (xtensa_isa isa, xtensa_format fmt, int slot, |
| 603 | const xtensa_insnbuf insn, xtensa_insnbuf slotbuf) |
| 604 | { |
| 605 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 606 | int slot_id; |
| 607 | |
| 608 | CHECK_FORMAT (intisa, fmt, -1); |
| 609 | CHECK_SLOT (intisa, fmt, slot, -1); |
| 610 | |
| 611 | slot_id = intisa->formats[fmt].slot_id[slot]; |
| 612 | (*intisa->slots[slot_id].get_fn) (insn, slotbuf); |
| 613 | return 0; |
| 614 | } |
| 615 | |
| 616 | |
| 617 | int |
| 618 | xtensa_format_set_slot (xtensa_isa isa, xtensa_format fmt, int slot, |
| 619 | xtensa_insnbuf insn, const xtensa_insnbuf slotbuf) |
| 620 | { |
| 621 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 622 | int slot_id; |
| 623 | |
| 624 | CHECK_FORMAT (intisa, fmt, -1); |
| 625 | CHECK_SLOT (intisa, fmt, slot, -1); |
| 626 | |
| 627 | slot_id = intisa->formats[fmt].slot_id[slot]; |
| 628 | (*intisa->slots[slot_id].set_fn) (insn, slotbuf); |
| 629 | return 0; |
| 630 | } |
| 631 | |
| 632 | |
| 633 | \f |
| 634 | /* Opcode information. */ |
| 635 | |
| 636 | |
| 637 | #define CHECK_OPCODE(INTISA,OPC,ERRVAL) \ |
| 638 | do { \ |
| 639 | if ((OPC) < 0 || (OPC) >= (INTISA)->num_opcodes) \ |
| 640 | { \ |
| 641 | xtisa_errno = xtensa_isa_bad_opcode; \ |
| 642 | strcpy (xtisa_error_msg, "invalid opcode specifier"); \ |
| 643 | return (ERRVAL); \ |
| 644 | } \ |
| 645 | } while (0) |
| 646 | |
| 647 | |
| 648 | xtensa_opcode |
| 649 | xtensa_opcode_lookup (xtensa_isa isa, const char *opname) |
| 650 | { |
| 651 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 652 | xtensa_lookup_entry entry, *result; |
| 653 | |
| 654 | if (!opname || !*opname) |
| 655 | { |
| 656 | xtisa_errno = xtensa_isa_bad_opcode; |
| 657 | strcpy (xtisa_error_msg, "invalid opcode name"); |
| 658 | return XTENSA_UNDEFINED; |
| 659 | } |
| 660 | |
| 661 | entry.key = opname; |
| 662 | result = bsearch (&entry, intisa->opname_lookup_table, intisa->num_opcodes, |
| 663 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| 664 | |
| 665 | if (!result) |
| 666 | { |
| 667 | xtisa_errno = xtensa_isa_bad_opcode; |
| 668 | sprintf (xtisa_error_msg, "opcode \"%s\" not recognized", opname); |
| 669 | return XTENSA_UNDEFINED; |
| 670 | } |
| 671 | |
| 672 | return result->u.opcode; |
| 673 | } |
| 674 | |
| 675 | |
| 676 | xtensa_opcode |
| 677 | xtensa_opcode_decode (xtensa_isa isa, xtensa_format fmt, int slot, |
| 678 | const xtensa_insnbuf slotbuf) |
| 679 | { |
| 680 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 681 | int slot_id; |
| 682 | xtensa_opcode opc; |
| 683 | |
| 684 | CHECK_FORMAT (intisa, fmt, XTENSA_UNDEFINED); |
| 685 | CHECK_SLOT (intisa, fmt, slot, XTENSA_UNDEFINED); |
| 686 | |
| 687 | slot_id = intisa->formats[fmt].slot_id[slot]; |
| 688 | |
| 689 | opc = (intisa->slots[slot_id].opcode_decode_fn) (slotbuf); |
| 690 | if (opc == XTENSA_UNDEFINED) |
| 691 | { |
| 692 | xtisa_errno = xtensa_isa_bad_opcode; |
| 693 | strcpy (xtisa_error_msg, "cannot decode opcode"); |
| 694 | } |
| 695 | return opc; |
| 696 | } |
| 697 | |
| 698 | |
| 699 | int |
| 700 | xtensa_opcode_encode (xtensa_isa isa, xtensa_format fmt, int slot, |
| 701 | xtensa_insnbuf slotbuf, xtensa_opcode opc) |
| 702 | { |
| 703 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 704 | int slot_id; |
| 705 | xtensa_opcode_encode_fn encode_fn; |
| 706 | |
| 707 | CHECK_FORMAT (intisa, fmt, -1); |
| 708 | CHECK_SLOT (intisa, fmt, slot, -1); |
| 709 | CHECK_OPCODE (intisa, opc, -1); |
| 710 | |
| 711 | slot_id = intisa->formats[fmt].slot_id[slot]; |
| 712 | encode_fn = intisa->opcodes[opc].encode_fns[slot_id]; |
| 713 | if (!encode_fn) |
| 714 | { |
| 715 | xtisa_errno = xtensa_isa_wrong_slot; |
| 716 | sprintf (xtisa_error_msg, |
| 717 | "opcode \"%s\" is not allowed in slot %d of format \"%s\"", |
| 718 | intisa->opcodes[opc].name, slot, intisa->formats[fmt].name); |
| 719 | return -1; |
| 720 | } |
| 721 | (*encode_fn) (slotbuf); |
| 722 | return 0; |
| 723 | } |
| 724 | |
| 725 | |
| 726 | const char * |
| 727 | xtensa_opcode_name (xtensa_isa isa, xtensa_opcode opc) |
| 728 | { |
| 729 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 730 | CHECK_OPCODE (intisa, opc, NULL); |
| 731 | return intisa->opcodes[opc].name; |
| 732 | } |
| 733 | |
| 734 | |
| 735 | int |
| 736 | xtensa_opcode_is_branch (xtensa_isa isa, xtensa_opcode opc) |
| 737 | { |
| 738 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 739 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 740 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_BRANCH) != 0) |
| 741 | return 1; |
| 742 | return 0; |
| 743 | } |
| 744 | |
| 745 | |
| 746 | int |
| 747 | xtensa_opcode_is_jump (xtensa_isa isa, xtensa_opcode opc) |
| 748 | { |
| 749 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 750 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 751 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_JUMP) != 0) |
| 752 | return 1; |
| 753 | return 0; |
| 754 | } |
| 755 | |
| 756 | |
| 757 | int |
| 758 | xtensa_opcode_is_loop (xtensa_isa isa, xtensa_opcode opc) |
| 759 | { |
| 760 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 761 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 762 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_LOOP) != 0) |
| 763 | return 1; |
| 764 | return 0; |
| 765 | } |
| 766 | |
| 767 | |
| 768 | int |
| 769 | xtensa_opcode_is_call (xtensa_isa isa, xtensa_opcode opc) |
| 770 | { |
| 771 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 772 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 773 | if ((intisa->opcodes[opc].flags & XTENSA_OPCODE_IS_CALL) != 0) |
| 774 | return 1; |
| 775 | return 0; |
| 776 | } |
| 777 | |
| 778 | |
| 779 | int |
| 780 | xtensa_opcode_num_operands (xtensa_isa isa, xtensa_opcode opc) |
| 781 | { |
| 782 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 783 | int iclass_id; |
| 784 | |
| 785 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 786 | iclass_id = intisa->opcodes[opc].iclass_id; |
| 787 | return intisa->iclasses[iclass_id].num_operands; |
| 788 | } |
| 789 | |
| 790 | |
| 791 | int |
| 792 | xtensa_opcode_num_stateOperands (xtensa_isa isa, xtensa_opcode opc) |
| 793 | { |
| 794 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 795 | int iclass_id; |
| 796 | |
| 797 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 798 | iclass_id = intisa->opcodes[opc].iclass_id; |
| 799 | return intisa->iclasses[iclass_id].num_stateOperands; |
| 800 | } |
| 801 | |
| 802 | |
| 803 | int |
| 804 | xtensa_opcode_num_interfaceOperands (xtensa_isa isa, xtensa_opcode opc) |
| 805 | { |
| 806 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 807 | int iclass_id; |
| 808 | |
| 809 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 810 | iclass_id = intisa->opcodes[opc].iclass_id; |
| 811 | return intisa->iclasses[iclass_id].num_interfaceOperands; |
| 812 | } |
| 813 | |
| 814 | |
| 815 | int |
| 816 | xtensa_opcode_num_funcUnit_uses (xtensa_isa isa, xtensa_opcode opc) |
| 817 | { |
| 818 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 819 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 820 | return intisa->opcodes[opc].num_funcUnit_uses; |
| 821 | } |
| 822 | |
| 823 | |
| 824 | xtensa_funcUnit_use * |
| 825 | xtensa_opcode_funcUnit_use (xtensa_isa isa, xtensa_opcode opc, int u) |
| 826 | { |
| 827 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 828 | CHECK_OPCODE (intisa, opc, NULL); |
| 829 | if (u < 0 || u >= intisa->opcodes[opc].num_funcUnit_uses) |
| 830 | { |
| 831 | xtisa_errno = xtensa_isa_bad_funcUnit; |
| 832 | sprintf (xtisa_error_msg, "invalid functional unit use number (%d); " |
| 833 | "opcode \"%s\" has %d", u, intisa->opcodes[opc].name, |
| 834 | intisa->opcodes[opc].num_funcUnit_uses); |
| 835 | return NULL; |
| 836 | } |
| 837 | return &intisa->opcodes[opc].funcUnit_uses[u]; |
| 838 | } |
| 839 | |
| 840 | |
| 841 | \f |
| 842 | /* Operand information. */ |
| 843 | |
| 844 | |
| 845 | #define CHECK_OPERAND(INTISA,OPC,ICLASS,OPND,ERRVAL) \ |
| 846 | do { \ |
| 847 | if ((OPND) < 0 || (OPND) >= (ICLASS)->num_operands) \ |
| 848 | { \ |
| 849 | xtisa_errno = xtensa_isa_bad_operand; \ |
| 850 | sprintf (xtisa_error_msg, "invalid operand number (%d); " \ |
| 851 | "opcode \"%s\" has %d operands", (OPND), \ |
| 852 | (INTISA)->opcodes[(OPC)].name, (ICLASS)->num_operands); \ |
| 853 | return (ERRVAL); \ |
| 854 | } \ |
| 855 | } while (0) |
| 856 | |
| 857 | |
| 858 | static xtensa_operand_internal * |
| 859 | get_operand (xtensa_isa_internal *intisa, xtensa_opcode opc, int opnd) |
| 860 | { |
| 861 | xtensa_iclass_internal *iclass; |
| 862 | int iclass_id, operand_id; |
| 863 | |
| 864 | CHECK_OPCODE (intisa, opc, NULL); |
| 865 | iclass_id = intisa->opcodes[opc].iclass_id; |
| 866 | iclass = &intisa->iclasses[iclass_id]; |
| 867 | CHECK_OPERAND (intisa, opc, iclass, opnd, NULL); |
| 868 | operand_id = iclass->operands[opnd].u.operand_id; |
| 869 | return &intisa->operands[operand_id]; |
| 870 | } |
| 871 | |
| 872 | |
| 873 | const char * |
| 874 | xtensa_operand_name (xtensa_isa isa, xtensa_opcode opc, int opnd) |
| 875 | { |
| 876 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 877 | xtensa_operand_internal *intop; |
| 878 | |
| 879 | intop = get_operand (intisa, opc, opnd); |
| 880 | if (!intop) return NULL; |
| 881 | return intop->name; |
| 882 | } |
| 883 | |
| 884 | |
| 885 | int |
| 886 | xtensa_operand_is_visible (xtensa_isa isa, xtensa_opcode opc, int opnd) |
| 887 | { |
| 888 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 889 | xtensa_iclass_internal *iclass; |
| 890 | int iclass_id, operand_id; |
| 891 | xtensa_operand_internal *intop; |
| 892 | |
| 893 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 894 | iclass_id = intisa->opcodes[opc].iclass_id; |
| 895 | iclass = &intisa->iclasses[iclass_id]; |
| 896 | CHECK_OPERAND (intisa, opc, iclass, opnd, XTENSA_UNDEFINED); |
| 897 | |
| 898 | /* Special case for "sout" operands. */ |
| 899 | if (iclass->operands[opnd].inout == 's') |
| 900 | return 0; |
| 901 | |
| 902 | operand_id = iclass->operands[opnd].u.operand_id; |
| 903 | intop = &intisa->operands[operand_id]; |
| 904 | |
| 905 | if ((intop->flags & XTENSA_OPERAND_IS_INVISIBLE) == 0) |
| 906 | return 1; |
| 907 | return 0; |
| 908 | } |
| 909 | |
| 910 | |
| 911 | char |
| 912 | xtensa_operand_inout (xtensa_isa isa, xtensa_opcode opc, int opnd) |
| 913 | { |
| 914 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 915 | xtensa_iclass_internal *iclass; |
| 916 | int iclass_id; |
| 917 | char inout; |
| 918 | |
| 919 | CHECK_OPCODE (intisa, opc, 0); |
| 920 | iclass_id = intisa->opcodes[opc].iclass_id; |
| 921 | iclass = &intisa->iclasses[iclass_id]; |
| 922 | CHECK_OPERAND (intisa, opc, iclass, opnd, 0); |
| 923 | inout = iclass->operands[opnd].inout; |
| 924 | |
| 925 | /* Special case for "sout" operands. */ |
| 926 | if (inout == 's') |
| 927 | return 'o'; |
| 928 | |
| 929 | return inout; |
| 930 | } |
| 931 | |
| 932 | |
| 933 | int |
| 934 | xtensa_operand_get_field (xtensa_isa isa, xtensa_opcode opc, int opnd, |
| 935 | xtensa_format fmt, int slot, |
| 936 | const xtensa_insnbuf slotbuf, uint32 *valp) |
| 937 | { |
| 938 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 939 | xtensa_operand_internal *intop; |
| 940 | int slot_id; |
| 941 | xtensa_get_field_fn get_fn; |
| 942 | |
| 943 | intop = get_operand (intisa, opc, opnd); |
| 944 | if (!intop) return -1; |
| 945 | |
| 946 | CHECK_FORMAT (intisa, fmt, -1); |
| 947 | CHECK_SLOT (intisa, fmt, slot, -1); |
| 948 | |
| 949 | slot_id = intisa->formats[fmt].slot_id[slot]; |
| 950 | if (intop->field_id == XTENSA_UNDEFINED) |
| 951 | { |
| 952 | xtisa_errno = xtensa_isa_no_field; |
| 953 | strcpy (xtisa_error_msg, "implicit operand has no field"); |
| 954 | return -1; |
| 955 | } |
| 956 | get_fn = intisa->slots[slot_id].get_field_fns[intop->field_id]; |
| 957 | if (!get_fn) |
| 958 | { |
| 959 | xtisa_errno = xtensa_isa_wrong_slot; |
| 960 | sprintf (xtisa_error_msg, |
| 961 | "operand \"%s\" does not exist in slot %d of format \"%s\"", |
| 962 | intop->name, slot, intisa->formats[fmt].name); |
| 963 | return -1; |
| 964 | } |
| 965 | *valp = (*get_fn) (slotbuf); |
| 966 | return 0; |
| 967 | } |
| 968 | |
| 969 | |
| 970 | int |
| 971 | xtensa_operand_set_field (xtensa_isa isa, xtensa_opcode opc, int opnd, |
| 972 | xtensa_format fmt, int slot, |
| 973 | xtensa_insnbuf slotbuf, uint32 val) |
| 974 | { |
| 975 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 976 | xtensa_operand_internal *intop; |
| 977 | int slot_id; |
| 978 | xtensa_set_field_fn set_fn; |
| 979 | |
| 980 | intop = get_operand (intisa, opc, opnd); |
| 981 | if (!intop) return -1; |
| 982 | |
| 983 | CHECK_FORMAT (intisa, fmt, -1); |
| 984 | CHECK_SLOT (intisa, fmt, slot, -1); |
| 985 | |
| 986 | slot_id = intisa->formats[fmt].slot_id[slot]; |
| 987 | if (intop->field_id == XTENSA_UNDEFINED) |
| 988 | { |
| 989 | xtisa_errno = xtensa_isa_no_field; |
| 990 | strcpy (xtisa_error_msg, "implicit operand has no field"); |
| 991 | return -1; |
| 992 | } |
| 993 | set_fn = intisa->slots[slot_id].set_field_fns[intop->field_id]; |
| 994 | if (!set_fn) |
| 995 | { |
| 996 | xtisa_errno = xtensa_isa_wrong_slot; |
| 997 | sprintf (xtisa_error_msg, |
| 998 | "operand \"%s\" does not exist in slot %d of format \"%s\"", |
| 999 | intop->name, slot, intisa->formats[fmt].name); |
| 1000 | return -1; |
| 1001 | } |
| 1002 | (*set_fn) (slotbuf, val); |
| 1003 | return 0; |
| 1004 | } |
| 1005 | |
| 1006 | |
| 1007 | int |
| 1008 | xtensa_operand_encode (xtensa_isa isa, xtensa_opcode opc, int opnd, |
| 1009 | uint32 *valp) |
| 1010 | { |
| 1011 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1012 | xtensa_operand_internal *intop; |
| 1013 | uint32 test_val, orig_val; |
| 1014 | |
| 1015 | intop = get_operand (intisa, opc, opnd); |
| 1016 | if (!intop) return -1; |
| 1017 | |
| 1018 | if (!intop->encode) |
| 1019 | { |
| 1020 | /* This is a default operand for a field. How can we tell if the |
| 1021 | value fits in the field? Write the value into the field, |
| 1022 | read it back, and then make sure we get the same value. */ |
| 1023 | |
| 1024 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1025 | static xtensa_insnbuf tmpbuf = 0; |
| 1026 | int slot_id; |
| 1027 | |
| 1028 | if (!tmpbuf) |
| 1029 | { |
| 1030 | tmpbuf = xtensa_insnbuf_alloc (isa); |
| 1031 | CHECK_ALLOC (tmpbuf, -1); |
| 1032 | } |
| 1033 | |
| 1034 | /* A default operand is always associated with a field, |
| 1035 | but check just to be sure.... */ |
| 1036 | if (intop->field_id == XTENSA_UNDEFINED) |
| 1037 | { |
| 1038 | xtisa_errno = xtensa_isa_internal_error; |
| 1039 | strcpy (xtisa_error_msg, "operand has no field"); |
| 1040 | return -1; |
| 1041 | } |
| 1042 | |
| 1043 | /* Find some slot that includes the field. */ |
| 1044 | for (slot_id = 0; slot_id < intisa->num_slots; slot_id++) |
| 1045 | { |
| 1046 | xtensa_get_field_fn get_fn = |
| 1047 | intisa->slots[slot_id].get_field_fns[intop->field_id]; |
| 1048 | xtensa_set_field_fn set_fn = |
| 1049 | intisa->slots[slot_id].set_field_fns[intop->field_id]; |
| 1050 | |
| 1051 | if (get_fn && set_fn) |
| 1052 | { |
| 1053 | (*set_fn) (tmpbuf, *valp); |
| 1054 | return ((*get_fn) (tmpbuf) != *valp); |
| 1055 | } |
| 1056 | } |
| 1057 | |
| 1058 | /* Couldn't find any slot containing the field.... */ |
| 1059 | xtisa_errno = xtensa_isa_no_field; |
| 1060 | strcpy (xtisa_error_msg, "field does not exist in any slot"); |
| 1061 | return -1; |
| 1062 | } |
| 1063 | |
| 1064 | /* Encode the value. In some cases, the encoding function may detect |
| 1065 | errors, but most of the time the only way to determine if the value |
| 1066 | was successfully encoded is to decode it and check if it matches |
| 1067 | the original value. */ |
| 1068 | orig_val = *valp; |
| 1069 | if ((*intop->encode) (valp) || |
| 1070 | (test_val = *valp, (*intop->decode) (&test_val)) || |
| 1071 | test_val != orig_val) |
| 1072 | { |
| 1073 | xtisa_errno = xtensa_isa_bad_value; |
| 1074 | sprintf (xtisa_error_msg, "cannot encode operand value 0x%08x", *valp); |
| 1075 | return -1; |
| 1076 | } |
| 1077 | |
| 1078 | return 0; |
| 1079 | } |
| 1080 | |
| 1081 | |
| 1082 | int |
| 1083 | xtensa_operand_decode (xtensa_isa isa, xtensa_opcode opc, int opnd, |
| 1084 | uint32 *valp) |
| 1085 | { |
| 1086 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1087 | xtensa_operand_internal *intop; |
| 1088 | |
| 1089 | intop = get_operand (intisa, opc, opnd); |
| 1090 | if (!intop) return -1; |
| 1091 | |
| 1092 | /* Use identity function for "default" operands. */ |
| 1093 | if (!intop->decode) |
| 1094 | return 0; |
| 1095 | |
| 1096 | if ((*intop->decode) (valp)) |
| 1097 | { |
| 1098 | xtisa_errno = xtensa_isa_bad_value; |
| 1099 | sprintf (xtisa_error_msg, "cannot decode operand value 0x%08x", *valp); |
| 1100 | return -1; |
| 1101 | } |
| 1102 | return 0; |
| 1103 | } |
| 1104 | |
| 1105 | |
| 1106 | int |
| 1107 | xtensa_operand_is_register (xtensa_isa isa, xtensa_opcode opc, int opnd) |
| 1108 | { |
| 1109 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1110 | xtensa_operand_internal *intop; |
| 1111 | |
| 1112 | intop = get_operand (intisa, opc, opnd); |
| 1113 | if (!intop) return XTENSA_UNDEFINED; |
| 1114 | |
| 1115 | if ((intop->flags & XTENSA_OPERAND_IS_REGISTER) != 0) |
| 1116 | return 1; |
| 1117 | return 0; |
| 1118 | } |
| 1119 | |
| 1120 | |
| 1121 | xtensa_regfile |
| 1122 | xtensa_operand_regfile (xtensa_isa isa, xtensa_opcode opc, int opnd) |
| 1123 | { |
| 1124 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1125 | xtensa_operand_internal *intop; |
| 1126 | |
| 1127 | intop = get_operand (intisa, opc, opnd); |
| 1128 | if (!intop) return XTENSA_UNDEFINED; |
| 1129 | |
| 1130 | return intop->regfile; |
| 1131 | } |
| 1132 | |
| 1133 | |
| 1134 | int |
| 1135 | xtensa_operand_num_regs (xtensa_isa isa, xtensa_opcode opc, int opnd) |
| 1136 | { |
| 1137 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1138 | xtensa_operand_internal *intop; |
| 1139 | |
| 1140 | intop = get_operand (intisa, opc, opnd); |
| 1141 | if (!intop) return XTENSA_UNDEFINED; |
| 1142 | |
| 1143 | return intop->num_regs; |
| 1144 | } |
| 1145 | |
| 1146 | |
| 1147 | int |
| 1148 | xtensa_operand_is_known_reg (xtensa_isa isa, xtensa_opcode opc, int opnd) |
| 1149 | { |
| 1150 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1151 | xtensa_operand_internal *intop; |
| 1152 | |
| 1153 | intop = get_operand (intisa, opc, opnd); |
| 1154 | if (!intop) return XTENSA_UNDEFINED; |
| 1155 | |
| 1156 | if ((intop->flags & XTENSA_OPERAND_IS_UNKNOWN) == 0) |
| 1157 | return 1; |
| 1158 | return 0; |
| 1159 | } |
| 1160 | |
| 1161 | |
| 1162 | int |
| 1163 | xtensa_operand_is_PCrelative (xtensa_isa isa, xtensa_opcode opc, int opnd) |
| 1164 | { |
| 1165 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1166 | xtensa_operand_internal *intop; |
| 1167 | |
| 1168 | intop = get_operand (intisa, opc, opnd); |
| 1169 | if (!intop) return XTENSA_UNDEFINED; |
| 1170 | |
| 1171 | if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) != 0) |
| 1172 | return 1; |
| 1173 | return 0; |
| 1174 | } |
| 1175 | |
| 1176 | |
| 1177 | int |
| 1178 | xtensa_operand_do_reloc (xtensa_isa isa, xtensa_opcode opc, int opnd, |
| 1179 | uint32 *valp, uint32 pc) |
| 1180 | { |
| 1181 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1182 | xtensa_operand_internal *intop; |
| 1183 | |
| 1184 | intop = get_operand (intisa, opc, opnd); |
| 1185 | if (!intop) return -1; |
| 1186 | |
| 1187 | if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) == 0) |
| 1188 | return 0; |
| 1189 | |
| 1190 | if (!intop->do_reloc) |
| 1191 | { |
| 1192 | xtisa_errno = xtensa_isa_internal_error; |
| 1193 | strcpy (xtisa_error_msg, "operand missing do_reloc function"); |
| 1194 | return -1; |
| 1195 | } |
| 1196 | |
| 1197 | if ((*intop->do_reloc) (valp, pc)) |
| 1198 | { |
| 1199 | xtisa_errno = xtensa_isa_bad_value; |
| 1200 | sprintf (xtisa_error_msg, |
| 1201 | "do_reloc failed for value 0x%08x at PC 0x%08x", *valp, pc); |
| 1202 | return -1; |
| 1203 | } |
| 1204 | |
| 1205 | return 0; |
| 1206 | } |
| 1207 | |
| 1208 | |
| 1209 | int |
| 1210 | xtensa_operand_undo_reloc (xtensa_isa isa, xtensa_opcode opc, int opnd, |
| 1211 | uint32 *valp, uint32 pc) |
| 1212 | { |
| 1213 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1214 | xtensa_operand_internal *intop; |
| 1215 | |
| 1216 | intop = get_operand (intisa, opc, opnd); |
| 1217 | if (!intop) return -1; |
| 1218 | |
| 1219 | if ((intop->flags & XTENSA_OPERAND_IS_PCRELATIVE) == 0) |
| 1220 | return 0; |
| 1221 | |
| 1222 | if (!intop->undo_reloc) |
| 1223 | { |
| 1224 | xtisa_errno = xtensa_isa_internal_error; |
| 1225 | strcpy (xtisa_error_msg, "operand missing undo_reloc function"); |
| 1226 | return -1; |
| 1227 | } |
| 1228 | |
| 1229 | if ((*intop->undo_reloc) (valp, pc)) |
| 1230 | { |
| 1231 | xtisa_errno = xtensa_isa_bad_value; |
| 1232 | sprintf (xtisa_error_msg, |
| 1233 | "undo_reloc failed for value 0x%08x at PC 0x%08x", *valp, pc); |
| 1234 | return -1; |
| 1235 | } |
| 1236 | |
| 1237 | return 0; |
| 1238 | } |
| 1239 | |
| 1240 | |
| 1241 | \f |
| 1242 | /* State Operands. */ |
| 1243 | |
| 1244 | |
| 1245 | #define CHECK_STATE_OPERAND(INTISA,OPC,ICLASS,STOP,ERRVAL) \ |
| 1246 | do { \ |
| 1247 | if ((STOP) < 0 || (STOP) >= (ICLASS)->num_stateOperands) \ |
| 1248 | { \ |
| 1249 | xtisa_errno = xtensa_isa_bad_operand; \ |
| 1250 | sprintf (xtisa_error_msg, "invalid state operand number (%d); " \ |
| 1251 | "opcode \"%s\" has %d state operands", (STOP), \ |
| 1252 | (INTISA)->opcodes[(OPC)].name, (ICLASS)->num_stateOperands); \ |
| 1253 | return (ERRVAL); \ |
| 1254 | } \ |
| 1255 | } while (0) |
| 1256 | |
| 1257 | |
| 1258 | xtensa_state |
| 1259 | xtensa_stateOperand_state (xtensa_isa isa, xtensa_opcode opc, int stOp) |
| 1260 | { |
| 1261 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1262 | xtensa_iclass_internal *iclass; |
| 1263 | int iclass_id; |
| 1264 | |
| 1265 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 1266 | iclass_id = intisa->opcodes[opc].iclass_id; |
| 1267 | iclass = &intisa->iclasses[iclass_id]; |
| 1268 | CHECK_STATE_OPERAND (intisa, opc, iclass, stOp, XTENSA_UNDEFINED); |
| 1269 | return iclass->stateOperands[stOp].u.state; |
| 1270 | } |
| 1271 | |
| 1272 | |
| 1273 | char |
| 1274 | xtensa_stateOperand_inout (xtensa_isa isa, xtensa_opcode opc, int stOp) |
| 1275 | { |
| 1276 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1277 | xtensa_iclass_internal *iclass; |
| 1278 | int iclass_id; |
| 1279 | |
| 1280 | CHECK_OPCODE (intisa, opc, 0); |
| 1281 | iclass_id = intisa->opcodes[opc].iclass_id; |
| 1282 | iclass = &intisa->iclasses[iclass_id]; |
| 1283 | CHECK_STATE_OPERAND (intisa, opc, iclass, stOp, 0); |
| 1284 | return iclass->stateOperands[stOp].inout; |
| 1285 | } |
| 1286 | |
| 1287 | \f |
| 1288 | /* Interface Operands. */ |
| 1289 | |
| 1290 | |
| 1291 | #define CHECK_INTERFACE_OPERAND(INTISA,OPC,ICLASS,IFOP,ERRVAL) \ |
| 1292 | do { \ |
| 1293 | if ((IFOP) < 0 || (IFOP) >= (ICLASS)->num_interfaceOperands) \ |
| 1294 | { \ |
| 1295 | xtisa_errno = xtensa_isa_bad_operand; \ |
| 1296 | sprintf (xtisa_error_msg, "invalid interface operand number (%d); " \ |
| 1297 | "opcode \"%s\" has %d interface operands", (IFOP), \ |
| 1298 | (INTISA)->opcodes[(OPC)].name, \ |
| 1299 | (ICLASS)->num_interfaceOperands); \ |
| 1300 | return (ERRVAL); \ |
| 1301 | } \ |
| 1302 | } while (0) |
| 1303 | |
| 1304 | |
| 1305 | xtensa_interface |
| 1306 | xtensa_interfaceOperand_interface (xtensa_isa isa, xtensa_opcode opc, |
| 1307 | int ifOp) |
| 1308 | { |
| 1309 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1310 | xtensa_iclass_internal *iclass; |
| 1311 | int iclass_id; |
| 1312 | |
| 1313 | CHECK_OPCODE (intisa, opc, XTENSA_UNDEFINED); |
| 1314 | iclass_id = intisa->opcodes[opc].iclass_id; |
| 1315 | iclass = &intisa->iclasses[iclass_id]; |
| 1316 | CHECK_INTERFACE_OPERAND (intisa, opc, iclass, ifOp, XTENSA_UNDEFINED); |
| 1317 | return iclass->interfaceOperands[ifOp]; |
| 1318 | } |
| 1319 | |
| 1320 | |
| 1321 | \f |
| 1322 | /* Register Files. */ |
| 1323 | |
| 1324 | |
| 1325 | #define CHECK_REGFILE(INTISA,RF,ERRVAL) \ |
| 1326 | do { \ |
| 1327 | if ((RF) < 0 || (RF) >= (INTISA)->num_regfiles) \ |
| 1328 | { \ |
| 1329 | xtisa_errno = xtensa_isa_bad_regfile; \ |
| 1330 | strcpy (xtisa_error_msg, "invalid regfile specifier"); \ |
| 1331 | return (ERRVAL); \ |
| 1332 | } \ |
| 1333 | } while (0) |
| 1334 | |
| 1335 | |
| 1336 | xtensa_regfile |
| 1337 | xtensa_regfile_lookup (xtensa_isa isa, const char *name) |
| 1338 | { |
| 1339 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1340 | int n; |
| 1341 | |
| 1342 | if (!name || !*name) |
| 1343 | { |
| 1344 | xtisa_errno = xtensa_isa_bad_regfile; |
| 1345 | strcpy (xtisa_error_msg, "invalid regfile name"); |
| 1346 | return XTENSA_UNDEFINED; |
| 1347 | } |
| 1348 | |
| 1349 | /* The expected number of regfiles is small; use a linear search. */ |
| 1350 | for (n = 0; n < intisa->num_regfiles; n++) |
| 1351 | { |
| 1352 | if (!strcmp (intisa->regfiles[n].name, name)) |
| 1353 | return n; |
| 1354 | } |
| 1355 | |
| 1356 | xtisa_errno = xtensa_isa_bad_regfile; |
| 1357 | sprintf (xtisa_error_msg, "regfile \"%s\" not recognized", name); |
| 1358 | return XTENSA_UNDEFINED; |
| 1359 | } |
| 1360 | |
| 1361 | |
| 1362 | xtensa_regfile |
| 1363 | xtensa_regfile_lookup_shortname (xtensa_isa isa, const char *shortname) |
| 1364 | { |
| 1365 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1366 | int n; |
| 1367 | |
| 1368 | if (!shortname || !*shortname) |
| 1369 | { |
| 1370 | xtisa_errno = xtensa_isa_bad_regfile; |
| 1371 | strcpy (xtisa_error_msg, "invalid regfile shortname"); |
| 1372 | return XTENSA_UNDEFINED; |
| 1373 | } |
| 1374 | |
| 1375 | /* The expected number of regfiles is small; use a linear search. */ |
| 1376 | for (n = 0; n < intisa->num_regfiles; n++) |
| 1377 | { |
| 1378 | /* Ignore regfile views since they always have the same shortnames |
| 1379 | as their parents. */ |
| 1380 | if (intisa->regfiles[n].parent != n) |
| 1381 | continue; |
| 1382 | if (!strcmp (intisa->regfiles[n].shortname, shortname)) |
| 1383 | return n; |
| 1384 | } |
| 1385 | |
| 1386 | xtisa_errno = xtensa_isa_bad_regfile; |
| 1387 | sprintf (xtisa_error_msg, "regfile shortname \"%s\" not recognized", |
| 1388 | shortname); |
| 1389 | return XTENSA_UNDEFINED; |
| 1390 | } |
| 1391 | |
| 1392 | |
| 1393 | const char * |
| 1394 | xtensa_regfile_name (xtensa_isa isa, xtensa_regfile rf) |
| 1395 | { |
| 1396 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1397 | CHECK_REGFILE (intisa, rf, NULL); |
| 1398 | return intisa->regfiles[rf].name; |
| 1399 | } |
| 1400 | |
| 1401 | |
| 1402 | const char * |
| 1403 | xtensa_regfile_shortname (xtensa_isa isa, xtensa_regfile rf) |
| 1404 | { |
| 1405 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1406 | CHECK_REGFILE (intisa, rf, NULL); |
| 1407 | return intisa->regfiles[rf].shortname; |
| 1408 | } |
| 1409 | |
| 1410 | |
| 1411 | xtensa_regfile |
| 1412 | xtensa_regfile_view_parent (xtensa_isa isa, xtensa_regfile rf) |
| 1413 | { |
| 1414 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1415 | CHECK_REGFILE (intisa, rf, XTENSA_UNDEFINED); |
| 1416 | return intisa->regfiles[rf].parent; |
| 1417 | } |
| 1418 | |
| 1419 | |
| 1420 | int |
| 1421 | xtensa_regfile_num_bits (xtensa_isa isa, xtensa_regfile rf) |
| 1422 | { |
| 1423 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1424 | CHECK_REGFILE (intisa, rf, XTENSA_UNDEFINED); |
| 1425 | return intisa->regfiles[rf].num_bits; |
| 1426 | } |
| 1427 | |
| 1428 | |
| 1429 | int |
| 1430 | xtensa_regfile_num_entries (xtensa_isa isa, xtensa_regfile rf) |
| 1431 | { |
| 1432 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1433 | CHECK_REGFILE (intisa, rf, XTENSA_UNDEFINED); |
| 1434 | return intisa->regfiles[rf].num_entries; |
| 1435 | } |
| 1436 | |
| 1437 | \f |
| 1438 | /* Processor States. */ |
| 1439 | |
| 1440 | |
| 1441 | #define CHECK_STATE(INTISA,ST,ERRVAL) \ |
| 1442 | do { \ |
| 1443 | if ((ST) < 0 || (ST) >= (INTISA)->num_states) \ |
| 1444 | { \ |
| 1445 | xtisa_errno = xtensa_isa_bad_state; \ |
| 1446 | strcpy (xtisa_error_msg, "invalid state specifier"); \ |
| 1447 | return (ERRVAL); \ |
| 1448 | } \ |
| 1449 | } while (0) |
| 1450 | |
| 1451 | |
| 1452 | xtensa_state |
| 1453 | xtensa_state_lookup (xtensa_isa isa, const char *name) |
| 1454 | { |
| 1455 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1456 | xtensa_lookup_entry entry, *result; |
| 1457 | |
| 1458 | if (!name || !*name) |
| 1459 | { |
| 1460 | xtisa_errno = xtensa_isa_bad_state; |
| 1461 | strcpy (xtisa_error_msg, "invalid state name"); |
| 1462 | return XTENSA_UNDEFINED; |
| 1463 | } |
| 1464 | |
| 1465 | entry.key = name; |
| 1466 | result = bsearch (&entry, intisa->state_lookup_table, intisa->num_states, |
| 1467 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| 1468 | |
| 1469 | if (!result) |
| 1470 | { |
| 1471 | xtisa_errno = xtensa_isa_bad_state; |
| 1472 | sprintf (xtisa_error_msg, "state \"%s\" not recognized", name); |
| 1473 | return XTENSA_UNDEFINED; |
| 1474 | } |
| 1475 | |
| 1476 | return result->u.state; |
| 1477 | } |
| 1478 | |
| 1479 | |
| 1480 | const char * |
| 1481 | xtensa_state_name (xtensa_isa isa, xtensa_state st) |
| 1482 | { |
| 1483 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1484 | CHECK_STATE (intisa, st, NULL); |
| 1485 | return intisa->states[st].name; |
| 1486 | } |
| 1487 | |
| 1488 | |
| 1489 | int |
| 1490 | xtensa_state_num_bits (xtensa_isa isa, xtensa_state st) |
| 1491 | { |
| 1492 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1493 | CHECK_STATE (intisa, st, XTENSA_UNDEFINED); |
| 1494 | return intisa->states[st].num_bits; |
| 1495 | } |
| 1496 | |
| 1497 | |
| 1498 | int |
| 1499 | xtensa_state_is_exported (xtensa_isa isa, xtensa_state st) |
| 1500 | { |
| 1501 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1502 | CHECK_STATE (intisa, st, XTENSA_UNDEFINED); |
| 1503 | if ((intisa->states[st].flags & XTENSA_STATE_IS_EXPORTED) != 0) |
| 1504 | return 1; |
| 1505 | return 0; |
| 1506 | } |
| 1507 | |
| 1508 | \f |
| 1509 | /* Sysregs. */ |
| 1510 | |
| 1511 | |
| 1512 | #define CHECK_SYSREG(INTISA,SYSREG,ERRVAL) \ |
| 1513 | do { \ |
| 1514 | if ((SYSREG) < 0 || (SYSREG) >= (INTISA)->num_sysregs) \ |
| 1515 | { \ |
| 1516 | xtisa_errno = xtensa_isa_bad_sysreg; \ |
| 1517 | strcpy (xtisa_error_msg, "invalid sysreg specifier"); \ |
| 1518 | return (ERRVAL); \ |
| 1519 | } \ |
| 1520 | } while (0) |
| 1521 | |
| 1522 | |
| 1523 | xtensa_sysreg |
| 1524 | xtensa_sysreg_lookup (xtensa_isa isa, int num, int is_user) |
| 1525 | { |
| 1526 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1527 | |
| 1528 | if (is_user != 0) |
| 1529 | is_user = 1; |
| 1530 | |
| 1531 | if (num < 0 || num > intisa->max_sysreg_num[is_user] |
| 1532 | || intisa->sysreg_table[is_user][num] == XTENSA_UNDEFINED) |
| 1533 | { |
| 1534 | xtisa_errno = xtensa_isa_bad_sysreg; |
| 1535 | strcpy (xtisa_error_msg, "sysreg not recognized"); |
| 1536 | return XTENSA_UNDEFINED; |
| 1537 | } |
| 1538 | |
| 1539 | return intisa->sysreg_table[is_user][num]; |
| 1540 | } |
| 1541 | |
| 1542 | |
| 1543 | xtensa_sysreg |
| 1544 | xtensa_sysreg_lookup_name (xtensa_isa isa, const char *name) |
| 1545 | { |
| 1546 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1547 | xtensa_lookup_entry entry, *result; |
| 1548 | |
| 1549 | if (!name || !*name) |
| 1550 | { |
| 1551 | xtisa_errno = xtensa_isa_bad_sysreg; |
| 1552 | strcpy (xtisa_error_msg, "invalid sysreg name"); |
| 1553 | return XTENSA_UNDEFINED; |
| 1554 | } |
| 1555 | |
| 1556 | entry.key = name; |
| 1557 | result = bsearch (&entry, intisa->sysreg_lookup_table, intisa->num_sysregs, |
| 1558 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| 1559 | |
| 1560 | if (!result) |
| 1561 | { |
| 1562 | xtisa_errno = xtensa_isa_bad_sysreg; |
| 1563 | sprintf (xtisa_error_msg, "sysreg \"%s\" not recognized", name); |
| 1564 | return XTENSA_UNDEFINED; |
| 1565 | } |
| 1566 | |
| 1567 | return result->u.sysreg; |
| 1568 | } |
| 1569 | |
| 1570 | |
| 1571 | const char * |
| 1572 | xtensa_sysreg_name (xtensa_isa isa, xtensa_sysreg sysreg) |
| 1573 | { |
| 1574 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1575 | CHECK_SYSREG (intisa, sysreg, NULL); |
| 1576 | return intisa->sysregs[sysreg].name; |
| 1577 | } |
| 1578 | |
| 1579 | |
| 1580 | int |
| 1581 | xtensa_sysreg_number (xtensa_isa isa, xtensa_sysreg sysreg) |
| 1582 | { |
| 1583 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1584 | CHECK_SYSREG (intisa, sysreg, XTENSA_UNDEFINED); |
| 1585 | return intisa->sysregs[sysreg].number; |
| 1586 | } |
| 1587 | |
| 1588 | |
| 1589 | int |
| 1590 | xtensa_sysreg_is_user (xtensa_isa isa, xtensa_sysreg sysreg) |
| 1591 | { |
| 1592 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1593 | CHECK_SYSREG (intisa, sysreg, XTENSA_UNDEFINED); |
| 1594 | if (intisa->sysregs[sysreg].is_user) |
| 1595 | return 1; |
| 1596 | return 0; |
| 1597 | } |
| 1598 | |
| 1599 | \f |
| 1600 | /* Interfaces. */ |
| 1601 | |
| 1602 | |
| 1603 | #define CHECK_INTERFACE(INTISA,INTF,ERRVAL) \ |
| 1604 | do { \ |
| 1605 | if ((INTF) < 0 || (INTF) >= (INTISA)->num_interfaces) \ |
| 1606 | { \ |
| 1607 | xtisa_errno = xtensa_isa_bad_interface; \ |
| 1608 | strcpy (xtisa_error_msg, "invalid interface specifier"); \ |
| 1609 | return (ERRVAL); \ |
| 1610 | } \ |
| 1611 | } while (0) |
| 1612 | |
| 1613 | |
| 1614 | xtensa_interface |
| 1615 | xtensa_interface_lookup (xtensa_isa isa, const char *ifname) |
| 1616 | { |
| 1617 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1618 | xtensa_lookup_entry entry, *result; |
| 1619 | |
| 1620 | if (!ifname || !*ifname) |
| 1621 | { |
| 1622 | xtisa_errno = xtensa_isa_bad_interface; |
| 1623 | strcpy (xtisa_error_msg, "invalid interface name"); |
| 1624 | return XTENSA_UNDEFINED; |
| 1625 | } |
| 1626 | |
| 1627 | entry.key = ifname; |
| 1628 | result = bsearch (&entry, intisa->interface_lookup_table, |
| 1629 | intisa->num_interfaces, |
| 1630 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| 1631 | |
| 1632 | if (!result) |
| 1633 | { |
| 1634 | xtisa_errno = xtensa_isa_bad_interface; |
| 1635 | sprintf (xtisa_error_msg, "interface \"%s\" not recognized", ifname); |
| 1636 | return XTENSA_UNDEFINED; |
| 1637 | } |
| 1638 | |
| 1639 | return result->u.intf; |
| 1640 | } |
| 1641 | |
| 1642 | |
| 1643 | const char * |
| 1644 | xtensa_interface_name (xtensa_isa isa, xtensa_interface intf) |
| 1645 | { |
| 1646 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1647 | CHECK_INTERFACE (intisa, intf, NULL); |
| 1648 | return intisa->interfaces[intf].name; |
| 1649 | } |
| 1650 | |
| 1651 | |
| 1652 | int |
| 1653 | xtensa_interface_num_bits (xtensa_isa isa, xtensa_interface intf) |
| 1654 | { |
| 1655 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1656 | CHECK_INTERFACE (intisa, intf, XTENSA_UNDEFINED); |
| 1657 | return intisa->interfaces[intf].num_bits; |
| 1658 | } |
| 1659 | |
| 1660 | |
| 1661 | char |
| 1662 | xtensa_interface_inout (xtensa_isa isa, xtensa_interface intf) |
| 1663 | { |
| 1664 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1665 | CHECK_INTERFACE (intisa, intf, 0); |
| 1666 | return intisa->interfaces[intf].inout; |
| 1667 | } |
| 1668 | |
| 1669 | |
| 1670 | int |
| 1671 | xtensa_interface_has_side_effect (xtensa_isa isa, xtensa_interface intf) |
| 1672 | { |
| 1673 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1674 | CHECK_INTERFACE (intisa, intf, XTENSA_UNDEFINED); |
| 1675 | if ((intisa->interfaces[intf].flags & XTENSA_INTERFACE_HAS_SIDE_EFFECT) != 0) |
| 1676 | return 1; |
| 1677 | return 0; |
| 1678 | } |
| 1679 | |
| 1680 | \f |
| 1681 | /* Functional Units. */ |
| 1682 | |
| 1683 | |
| 1684 | #define CHECK_FUNCUNIT(INTISA,FUN,ERRVAL) \ |
| 1685 | do { \ |
| 1686 | if ((FUN) < 0 || (FUN) >= (INTISA)->num_funcUnits) \ |
| 1687 | { \ |
| 1688 | xtisa_errno = xtensa_isa_bad_funcUnit; \ |
| 1689 | strcpy (xtisa_error_msg, "invalid functional unit specifier"); \ |
| 1690 | return (ERRVAL); \ |
| 1691 | } \ |
| 1692 | } while (0) |
| 1693 | |
| 1694 | |
| 1695 | xtensa_funcUnit |
| 1696 | xtensa_funcUnit_lookup (xtensa_isa isa, const char *fname) |
| 1697 | { |
| 1698 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1699 | xtensa_lookup_entry entry, *result; |
| 1700 | |
| 1701 | if (!fname || !*fname) |
| 1702 | { |
| 1703 | xtisa_errno = xtensa_isa_bad_funcUnit; |
| 1704 | strcpy (xtisa_error_msg, "invalid functional unit name"); |
| 1705 | return XTENSA_UNDEFINED; |
| 1706 | } |
| 1707 | |
| 1708 | entry.key = fname; |
| 1709 | result = bsearch (&entry, intisa->funcUnit_lookup_table, |
| 1710 | intisa->num_funcUnits, |
| 1711 | sizeof (xtensa_lookup_entry), xtensa_isa_name_compare); |
| 1712 | |
| 1713 | if (!result) |
| 1714 | { |
| 1715 | xtisa_errno = xtensa_isa_bad_funcUnit; |
| 1716 | sprintf (xtisa_error_msg, |
| 1717 | "functional unit \"%s\" not recognized", fname); |
| 1718 | return XTENSA_UNDEFINED; |
| 1719 | } |
| 1720 | |
| 1721 | return result->u.fun; |
| 1722 | } |
| 1723 | |
| 1724 | |
| 1725 | const char * |
| 1726 | xtensa_funcUnit_name (xtensa_isa isa, xtensa_funcUnit fun) |
| 1727 | { |
| 1728 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1729 | CHECK_FUNCUNIT (intisa, fun, NULL); |
| 1730 | return intisa->funcUnits[fun].name; |
| 1731 | } |
| 1732 | |
| 1733 | |
| 1734 | int |
| 1735 | xtensa_funcUnit_num_copies (xtensa_isa isa, xtensa_funcUnit fun) |
| 1736 | { |
| 1737 | xtensa_isa_internal *intisa = (xtensa_isa_internal *) isa; |
| 1738 | CHECK_FUNCUNIT (intisa, fun, XTENSA_UNDEFINED); |
| 1739 | return intisa->funcUnits[fun].num_copies; |
| 1740 | } |
| 1741 | |