| 1 | /* opc2c.c --- generate C opcode decoder code from from .opc file |
| 2 | |
| 3 | Copyright (C) 2005, 2007, 2008, 2009 Free Software Foundation, Inc. |
| 4 | Contributed by Red Hat, Inc. |
| 5 | |
| 6 | This file is part of the GNU opcode 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | |
| 22 | #include <stdio.h> |
| 23 | #include <string.h> |
| 24 | #include <ctype.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <errno.h> |
| 27 | #include "libiberty.h" |
| 28 | |
| 29 | static char * line_buf = NULL; |
| 30 | static int line_buf_size = 0; |
| 31 | |
| 32 | #define LBUFINCR 100 |
| 33 | |
| 34 | char * |
| 35 | safe_fgets (FILE * f) |
| 36 | { |
| 37 | char * line_ptr; |
| 38 | |
| 39 | if (line_buf == NULL) |
| 40 | { |
| 41 | line_buf = (char *) malloc (LBUFINCR); |
| 42 | line_buf_size = LBUFINCR; |
| 43 | } |
| 44 | |
| 45 | /* Points to last byte. */ |
| 46 | line_ptr = line_buf + line_buf_size - 1; |
| 47 | |
| 48 | /* So we can see if fgets put a 0 there. */ |
| 49 | *line_ptr = 1; |
| 50 | if (fgets (line_buf, line_buf_size, f) == 0) |
| 51 | return NULL; |
| 52 | |
| 53 | /* We filled the buffer? */ |
| 54 | while (line_ptr[0] == 0 && line_ptr[-1] != '\n') |
| 55 | { |
| 56 | /* Make the buffer bigger and read more of the line. */ |
| 57 | line_buf_size += LBUFINCR; |
| 58 | line_buf = (char *) realloc (line_buf, line_buf_size); |
| 59 | |
| 60 | /* Points to last byte again. */ |
| 61 | line_ptr = line_buf + line_buf_size - 1; |
| 62 | /* So we can see if fgets put a 0 there. */ |
| 63 | *line_ptr = 1; |
| 64 | |
| 65 | if (fgets (line_buf + line_buf_size - LBUFINCR - 1, LBUFINCR + 1, f) == 0) |
| 66 | return NULL; |
| 67 | } |
| 68 | |
| 69 | return line_buf; |
| 70 | } |
| 71 | |
| 72 | |
| 73 | static int errors = 0; |
| 74 | |
| 75 | #define MAX_BYTES 10 |
| 76 | |
| 77 | typedef struct |
| 78 | { |
| 79 | int varyno:16; |
| 80 | int byte:8; |
| 81 | int shift:8; |
| 82 | } VaryRef; |
| 83 | |
| 84 | typedef struct |
| 85 | { |
| 86 | char nbytes; |
| 87 | char dbytes; |
| 88 | char id[MAX_BYTES * 8 + 1]; |
| 89 | unsigned char var_start[MAX_BYTES * 8 + 1]; |
| 90 | struct |
| 91 | { |
| 92 | unsigned char decodable_mask; |
| 93 | unsigned char decodable_bits; |
| 94 | } b[MAX_BYTES]; |
| 95 | char * comment; |
| 96 | char * syntax; |
| 97 | int lineno; |
| 98 | int nlines; |
| 99 | char ** lines; |
| 100 | struct Indirect * last_ind; |
| 101 | int semantics_label; |
| 102 | int nvaries; |
| 103 | VaryRef * vary; |
| 104 | } opcode; |
| 105 | |
| 106 | int n_opcodes; |
| 107 | opcode ** opcodes; |
| 108 | opcode * op; |
| 109 | |
| 110 | typedef struct |
| 111 | { |
| 112 | char * name; |
| 113 | int nlen; |
| 114 | unsigned char mask; |
| 115 | int n_patterns; |
| 116 | unsigned char * patterns; |
| 117 | } Vary; |
| 118 | |
| 119 | Vary ** vary = 0; |
| 120 | int n_varies = 0; |
| 121 | |
| 122 | unsigned char cur_bits[MAX_BYTES + 1]; |
| 123 | |
| 124 | char * orig_filename; |
| 125 | |
| 126 | FILE * sim_log = NULL; |
| 127 | #define lprintf if (sim_log) fprintf |
| 128 | |
| 129 | opcode prefix_text, suffix_text; |
| 130 | |
| 131 | typedef enum |
| 132 | { |
| 133 | T_unused, |
| 134 | T_op, |
| 135 | T_indirect, |
| 136 | T_done |
| 137 | } OpType; |
| 138 | |
| 139 | typedef struct Indirect |
| 140 | { |
| 141 | OpType type; |
| 142 | union |
| 143 | { |
| 144 | struct Indirect * ind; |
| 145 | opcode * op; |
| 146 | } u; |
| 147 | } Indirect; |
| 148 | |
| 149 | Indirect indirect[256]; |
| 150 | |
| 151 | static int |
| 152 | next_varybits (int bits, opcode * op, int byte) |
| 153 | { |
| 154 | int mask = op->b[byte].decodable_mask; |
| 155 | int i; |
| 156 | |
| 157 | for (i = 0; i < 8; i++) |
| 158 | if (!(mask & (1 << i))) |
| 159 | { |
| 160 | if (bits & (1 << i)) |
| 161 | { |
| 162 | bits &= ~(1 << i); |
| 163 | } |
| 164 | else |
| 165 | { |
| 166 | bits |= (1 << i); |
| 167 | return bits; |
| 168 | } |
| 169 | } |
| 170 | return 0; |
| 171 | } |
| 172 | |
| 173 | static int |
| 174 | valid_varybits (int bits, opcode * op, int byte) |
| 175 | { |
| 176 | if (op->nvaries) |
| 177 | { |
| 178 | int vn; |
| 179 | |
| 180 | for (vn = 0; vn < op->nvaries; vn++) |
| 181 | { |
| 182 | Vary * v; |
| 183 | int found = 0; |
| 184 | int i; |
| 185 | int ob; |
| 186 | |
| 187 | if (byte != op->vary[vn].byte) |
| 188 | continue; |
| 189 | v = vary[op->vary[vn].varyno]; |
| 190 | ob = (bits >> op->vary[vn].shift) & v->mask; |
| 191 | lprintf (sim_log, "varybits: vary %s ob %x\n", v->name, ob); |
| 192 | |
| 193 | for (i = 0; i < v->n_patterns; i++) |
| 194 | if (ob == v->patterns[i]) |
| 195 | { |
| 196 | lprintf (sim_log, " found at %d\n", i); |
| 197 | found = 1; |
| 198 | break; |
| 199 | } |
| 200 | if (!found) |
| 201 | return 0; |
| 202 | } |
| 203 | } |
| 204 | return 1; |
| 205 | } |
| 206 | |
| 207 | char * |
| 208 | prmb (int mask, int bits) |
| 209 | { |
| 210 | static char buf[8][30]; |
| 211 | static int bn = 0; |
| 212 | char * bp; |
| 213 | |
| 214 | bn = (bn + 1) % 8; |
| 215 | bp = buf[bn]; |
| 216 | int i; |
| 217 | for (i = 0; i < 8; i++) |
| 218 | { |
| 219 | int bit = 0x80 >> i; |
| 220 | |
| 221 | if (!(mask & bit)) |
| 222 | *bp++ = '-'; |
| 223 | else if (bits & bit) |
| 224 | *bp++ = '1'; |
| 225 | else |
| 226 | *bp++ = '0'; |
| 227 | if (i % 4 == 3) |
| 228 | *bp++ = ' '; |
| 229 | } |
| 230 | *--bp = 0; |
| 231 | return buf[bn]; |
| 232 | } |
| 233 | |
| 234 | static int |
| 235 | op_cmp (const void *va, const void *vb) |
| 236 | { |
| 237 | const opcode * a = *(const opcode **) va; |
| 238 | const opcode * b = *(const opcode **) vb; |
| 239 | |
| 240 | if (a->nbytes != b->nbytes) |
| 241 | return a->nbytes - b->nbytes; |
| 242 | |
| 243 | return strcmp (a->id, b->id); |
| 244 | } |
| 245 | |
| 246 | void |
| 247 | dump_lines (opcode * op, int level, Indirect * ind) |
| 248 | { |
| 249 | char * varnames[40]; |
| 250 | int i, vn = 0; |
| 251 | |
| 252 | if (op->semantics_label) |
| 253 | { |
| 254 | printf ("%*sgoto op_semantics_%d;\n", level, "", op->semantics_label); |
| 255 | return; |
| 256 | } |
| 257 | |
| 258 | if (ind != op->last_ind) |
| 259 | { |
| 260 | static int labelno = 0; |
| 261 | labelno++; |
| 262 | printf ("%*sop_semantics_%d:\n", level, "", labelno); |
| 263 | op->semantics_label = labelno; |
| 264 | } |
| 265 | |
| 266 | if (op->comment) |
| 267 | { |
| 268 | level += 2; |
| 269 | printf ("%*s{\n", level, ""); |
| 270 | printf ("%*s %s\n", level, "", op->comment); |
| 271 | } |
| 272 | |
| 273 | for (i = 0; i < op->nbytes * 8;) |
| 274 | { |
| 275 | if (isalpha (op->id[i])) |
| 276 | { |
| 277 | int byte = i >> 3; |
| 278 | int mask = 0; |
| 279 | int shift = 0; |
| 280 | char name[33]; |
| 281 | char * np = name; |
| 282 | |
| 283 | while (op->id[i] && isalpha (op->id[i])) |
| 284 | { |
| 285 | mask = (mask << 1) | 1; |
| 286 | shift = 7 - (i & 7); |
| 287 | *np++ = op->id[i++]; |
| 288 | if (op->var_start[i]) |
| 289 | break; |
| 290 | } |
| 291 | *np = 0; |
| 292 | varnames[vn++] = strdup (name); |
| 293 | printf ("#line %d \"%s\"\n", op->lineno + 1, orig_filename); |
| 294 | if (mask & ~0xff) |
| 295 | { |
| 296 | fprintf (stderr, "Error: variable %s spans bytes: %s\n", |
| 297 | name, op->comment); |
| 298 | errors++; |
| 299 | } |
| 300 | else if (shift && (mask != 0xff)) |
| 301 | printf ("%*s int %s AU = (op[%d] >> %d) & 0x%02x;\n", |
| 302 | level, "", name, byte, shift, mask); |
| 303 | else if (mask != 0xff) |
| 304 | printf ("%*s int %s AU = op[%d] & 0x%02x;\n", |
| 305 | level, "", name, byte, mask); |
| 306 | else |
| 307 | printf ("%*s int %s AU = op[%d];\n", level, "", name, byte); |
| 308 | } |
| 309 | else |
| 310 | i++; |
| 311 | } |
| 312 | |
| 313 | if (op->comment) |
| 314 | { |
| 315 | printf ("%*s if (trace)\n", level, ""); |
| 316 | printf ("%*s {\n", level, ""); |
| 317 | printf ("%*s printf (\"\\033[33m%%s\\033[0m ", level, ""); |
| 318 | for (i = 0; i < op->nbytes; i++) |
| 319 | printf (" %%02x"); |
| 320 | printf ("\\n\""); |
| 321 | printf (",\n%*s \"%s\"", level, "", op->comment); |
| 322 | for (i = 0; i < op->nbytes; i++) |
| 323 | { |
| 324 | if (i == 0) |
| 325 | printf (",\n%*s op[%d]", level, "", i); |
| 326 | else |
| 327 | printf (", op[%d]", i); |
| 328 | } |
| 329 | printf (");\n"); |
| 330 | for (i = 0; i < vn; i++) |
| 331 | printf ("%*s printf (\" %s = 0x%%x%s\", %s);\n", level, "", |
| 332 | varnames[i], (i < vn - 1) ? "," : "\\n", varnames[i]); |
| 333 | printf ("%*s }\n", level, ""); |
| 334 | } |
| 335 | |
| 336 | if (op->syntax) |
| 337 | printf ("%*s SYNTAX(\"%s\");\n", level, "", op->syntax); |
| 338 | |
| 339 | printf ("#line %d \"%s\"\n", op->lineno + 1, orig_filename); |
| 340 | |
| 341 | for (i = 0; i < op->nlines; i++) |
| 342 | printf ("%*s%s", level, "", op->lines[i]); |
| 343 | |
| 344 | if (op->comment) |
| 345 | printf ("%*s}\n", level, ""); |
| 346 | } |
| 347 | |
| 348 | void |
| 349 | store_opcode_bits (opcode * op, int byte, Indirect * ind) |
| 350 | { |
| 351 | int bits = op->b[byte].decodable_bits; |
| 352 | |
| 353 | do |
| 354 | { |
| 355 | if (!valid_varybits (bits, op, byte)) |
| 356 | continue; |
| 357 | |
| 358 | switch (ind[bits].type) |
| 359 | { |
| 360 | case T_unused: |
| 361 | if (byte == op->dbytes - 1) |
| 362 | { |
| 363 | ind[bits].type = T_op; |
| 364 | ind[bits].u.op = op; |
| 365 | op->last_ind = ind; |
| 366 | break; |
| 367 | } |
| 368 | else |
| 369 | { |
| 370 | int i2; |
| 371 | |
| 372 | ind[bits].type = T_indirect; |
| 373 | ind[bits].u.ind = (Indirect *) malloc (256 * sizeof (Indirect)); |
| 374 | for (i2 = 0; i2 < 256; i2++) |
| 375 | ind[bits].u.ind[i2].type = T_unused; |
| 376 | store_opcode_bits (op, byte + 1, ind[bits].u.ind); |
| 377 | } |
| 378 | break; |
| 379 | |
| 380 | case T_indirect: |
| 381 | if (byte < op->dbytes - 1) |
| 382 | store_opcode_bits (op, byte + 1, ind[bits].u.ind); |
| 383 | break; |
| 384 | |
| 385 | case T_op: |
| 386 | break; |
| 387 | |
| 388 | case T_done: |
| 389 | break; |
| 390 | } |
| 391 | } |
| 392 | while ((bits = next_varybits (bits, op, byte)) != 0); |
| 393 | } |
| 394 | |
| 395 | void |
| 396 | emit_indirect (Indirect * ind, int byte) |
| 397 | { |
| 398 | int unsup = 0; |
| 399 | int j, n, mask; |
| 400 | |
| 401 | mask = 0; |
| 402 | for (j = 0; j < 256; j++) |
| 403 | { |
| 404 | switch (ind[j].type) |
| 405 | { |
| 406 | case T_indirect: |
| 407 | mask = 0xff; |
| 408 | break; |
| 409 | case T_op: |
| 410 | mask |= ind[j].u.op->b[byte].decodable_mask; |
| 411 | break; |
| 412 | case T_done: |
| 413 | case T_unused: |
| 414 | break; |
| 415 | } |
| 416 | } |
| 417 | |
| 418 | printf ("%*s GETBYTE ();\n", byte * 6, ""); |
| 419 | printf ("%*s switch (op[%d] & 0x%02x)\n", byte * 6, "", byte, mask); |
| 420 | printf ("%*s {\n", byte * 6, ""); |
| 421 | |
| 422 | for (j = 0; j < 256; j++) |
| 423 | if ((j & ~mask) == 0) |
| 424 | { |
| 425 | switch (ind[j].type) |
| 426 | { |
| 427 | case T_done: |
| 428 | break; |
| 429 | case T_unused: |
| 430 | unsup = 1; |
| 431 | break; |
| 432 | case T_op: |
| 433 | for (n = j; n < 256; n++) |
| 434 | if ((n & ~mask) == 0 |
| 435 | && ind[n].type == T_op && ind[n].u.op == ind[j].u.op) |
| 436 | { |
| 437 | ind[n].type = T_done; |
| 438 | printf ("%*s case 0x%02x:\n", byte * 6, "", n); |
| 439 | } |
| 440 | for (n = byte; n < ind[j].u.op->nbytes - 1; n++) |
| 441 | printf ("%*s GETBYTE();\n", byte * 6, ""); |
| 442 | dump_lines (ind[j].u.op, byte * 6 + 6, ind); |
| 443 | printf ("%*s break;\n", byte * 6, ""); |
| 444 | break; |
| 445 | case T_indirect: |
| 446 | printf ("%*s case 0x%02x:\n", byte * 6, "", j); |
| 447 | emit_indirect (ind[j].u.ind, byte + 1); |
| 448 | printf ("%*s break;\n", byte * 6, ""); |
| 449 | break; |
| 450 | } |
| 451 | } |
| 452 | if (unsup) |
| 453 | printf ("%*s default: UNSUPPORTED(); break;\n", byte * 6, ""); |
| 454 | printf ("%*s }\n", byte * 6, ""); |
| 455 | } |
| 456 | |
| 457 | static char * |
| 458 | pv_dup (char * p, char * ep) |
| 459 | { |
| 460 | int n = ep - p; |
| 461 | char *rv = (char *) malloc (n + 1); |
| 462 | |
| 463 | memcpy (rv, p, n); |
| 464 | rv[n] = 0; |
| 465 | return rv; |
| 466 | } |
| 467 | |
| 468 | static unsigned char |
| 469 | str2mask (char * str, char * ep) |
| 470 | { |
| 471 | unsigned char rv = 0; |
| 472 | |
| 473 | while (str < ep) |
| 474 | { |
| 475 | rv *= 2; |
| 476 | if (*str == '1') |
| 477 | rv += 1; |
| 478 | str++; |
| 479 | } |
| 480 | return rv; |
| 481 | } |
| 482 | |
| 483 | static void |
| 484 | process_vary (char * line) |
| 485 | { |
| 486 | char * cp; |
| 487 | char * ep; |
| 488 | Vary * v = (Vary *) malloc (sizeof (Vary)); |
| 489 | |
| 490 | n_varies++; |
| 491 | if (vary) |
| 492 | vary = (Vary **) realloc (vary, n_varies * sizeof (Vary *)); |
| 493 | else |
| 494 | vary = (Vary **) malloc (n_varies * sizeof (Vary *)); |
| 495 | vary[n_varies - 1] = v; |
| 496 | |
| 497 | cp = line; |
| 498 | |
| 499 | for (cp = line; isspace (*cp); cp++); |
| 500 | for (ep = cp; *ep && !isspace (*ep); ep++); |
| 501 | |
| 502 | v->name = pv_dup (cp, ep); |
| 503 | v->nlen = strlen (v->name); |
| 504 | v->mask = (1 << v->nlen) - 1; |
| 505 | |
| 506 | v->n_patterns = 0; |
| 507 | v->patterns = (unsigned char *) malloc (1); |
| 508 | while (1) |
| 509 | { |
| 510 | for (cp = ep; isspace (*cp); cp++); |
| 511 | if (!isdigit (*cp)) |
| 512 | break; |
| 513 | for (ep = cp; *ep && !isspace (*ep); ep++); |
| 514 | v->n_patterns++; |
| 515 | v->patterns = (unsigned char *) realloc (v->patterns, v->n_patterns); |
| 516 | v->patterns[v->n_patterns - 1] = str2mask (cp, ep); |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | static int |
| 521 | fieldcmp (opcode * op, int bit, char *name) |
| 522 | { |
| 523 | int n = strlen (name); |
| 524 | |
| 525 | if (memcmp (op->id + bit, name, n) == 0 |
| 526 | && (!isalpha (op->id[bit + n]) || op->var_start[bit + n])) |
| 527 | return 1; |
| 528 | return 0; |
| 529 | } |
| 530 | |
| 531 | static void |
| 532 | log_indirect (Indirect * ind, int byte) |
| 533 | { |
| 534 | int i, j; |
| 535 | char * last_c = 0; |
| 536 | |
| 537 | for (i = 0; i < 256; i++) |
| 538 | { |
| 539 | |
| 540 | for (j = 0; j < byte; j++) |
| 541 | fprintf (sim_log, "%s ", prmb (255, cur_bits[j])); |
| 542 | fprintf (sim_log, "%s ", prmb (255, i)); |
| 543 | |
| 544 | switch (ind[i].type) |
| 545 | { |
| 546 | case T_op: |
| 547 | case T_done: |
| 548 | if (last_c && (ind[i].u.op->comment == last_c)) |
| 549 | fprintf (sim_log, "''\n"); |
| 550 | else |
| 551 | fprintf (sim_log, "%s\n", ind[i].u.op->comment); |
| 552 | last_c = ind[i].u.op->comment; |
| 553 | break; |
| 554 | case T_unused: |
| 555 | fprintf (sim_log, "unused\n"); |
| 556 | break; |
| 557 | case T_indirect: |
| 558 | fprintf (sim_log, "indirect\n"); |
| 559 | cur_bits[byte] = i; |
| 560 | log_indirect (ind[i].u.ind, byte + 1); |
| 561 | last_c = 0; |
| 562 | break; |
| 563 | } |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | int |
| 568 | main (int argc, char ** argv) |
| 569 | { |
| 570 | char * line; |
| 571 | FILE * in; |
| 572 | int lineno = 0; |
| 573 | int i; |
| 574 | VaryRef * vlist; |
| 575 | int skipping_section = 0; |
| 576 | |
| 577 | if (argc > 2 && strcmp (argv[1], "-l") == 0) |
| 578 | { |
| 579 | sim_log = fopen (argv[2], "w"); |
| 580 | fprintf (stderr, "sim_log: %s\n", argv[2]); |
| 581 | argc -= 2; |
| 582 | argv += 2; |
| 583 | } |
| 584 | |
| 585 | if (argc < 2) |
| 586 | { |
| 587 | fprintf (stderr, "usage: opc2c infile.opc > outfile.opc\n"); |
| 588 | exit (1); |
| 589 | } |
| 590 | |
| 591 | orig_filename = lbasename (argv[1]); |
| 592 | in = fopen (argv[1], "r"); |
| 593 | if (!in) |
| 594 | { |
| 595 | fprintf (stderr, "Unable to open file %s for reading: %s\n", argv[1], |
| 596 | xstrerror (errno)); |
| 597 | exit (1); |
| 598 | } |
| 599 | |
| 600 | n_opcodes = 0; |
| 601 | opcodes = (opcode **) malloc (sizeof (opcode *)); |
| 602 | op = &prefix_text; |
| 603 | op->lineno = 0; |
| 604 | while ((line = safe_fgets (in)) != 0) |
| 605 | { |
| 606 | lineno++; |
| 607 | if (strncmp (line, "/*?* ", 5) == 0) |
| 608 | { |
| 609 | skipping_section = 1; |
| 610 | continue; |
| 611 | } |
| 612 | if (strncmp (line, " /** ", 6) == 0 |
| 613 | && (isdigit (line[6]) || memcmp (line + 6, "VARY", 4) == 0)) |
| 614 | line += 2; |
| 615 | if (line[0] == '/' && line[1] == '*' && line[2] == '*') |
| 616 | { |
| 617 | skipping_section = 0; |
| 618 | if (strncmp (line, "/** */", 6) == 0) |
| 619 | { |
| 620 | op = &suffix_text; |
| 621 | op->lineno = lineno; |
| 622 | } |
| 623 | else if (strncmp (line, "/** VARY ", 9) == 0) |
| 624 | process_vary (line + 9); |
| 625 | else |
| 626 | { |
| 627 | char * lp; |
| 628 | int i, bit, byte; |
| 629 | int var_start = 1; |
| 630 | |
| 631 | n_opcodes++; |
| 632 | opcodes = |
| 633 | (opcode **) realloc (opcodes, n_opcodes * sizeof (opcode *)); |
| 634 | op = (opcode *) malloc (sizeof (opcode)); |
| 635 | opcodes[n_opcodes - 1] = op; |
| 636 | |
| 637 | op->nbytes = op->dbytes = 0; |
| 638 | memset (op->id, 0, sizeof (op->id)); |
| 639 | memset (op->var_start, 0, sizeof (op->var_start)); |
| 640 | for (i = 0; i < MAX_BYTES; i++) |
| 641 | { |
| 642 | op->b[i].decodable_mask = 0; |
| 643 | op->b[i].decodable_bits = 0; |
| 644 | } |
| 645 | op->comment = strdup (line); |
| 646 | op->comment[strlen (op->comment) - 1] = 0; |
| 647 | while (op->comment[0] && isspace (op->comment[0])) |
| 648 | op->comment++; |
| 649 | op->lineno = lineno; |
| 650 | op->nlines = 0; |
| 651 | op->lines = 0; |
| 652 | op->last_ind = 0; |
| 653 | op->semantics_label = 0; |
| 654 | op->nvaries = 0; |
| 655 | op->vary = 0; |
| 656 | |
| 657 | i = 0; |
| 658 | for (lp = line + 4; *lp; lp++) |
| 659 | { |
| 660 | bit = 7 - (i & 7); |
| 661 | byte = i >> 3; |
| 662 | |
| 663 | if (strncmp (lp, "*/", 2) == 0) |
| 664 | break; |
| 665 | else if ((lp[0] == ' ' && lp[1] == ' ') || (lp[0] == '\t')) |
| 666 | { |
| 667 | while (*lp == ' ' || *lp == '\t') |
| 668 | lp ++; |
| 669 | op->syntax = strdup (lp); |
| 670 | lp = strstr (op->syntax, "*/"); |
| 671 | if (lp) |
| 672 | { |
| 673 | *lp-- = 0; |
| 674 | while ((*lp == ' ' || *lp == '\t') |
| 675 | && lp > op->syntax) |
| 676 | *lp-- = 0; |
| 677 | } |
| 678 | break; |
| 679 | } |
| 680 | else if (*lp == ' ') |
| 681 | var_start = 1; |
| 682 | else |
| 683 | { |
| 684 | if (*lp == '0' || *lp == '1') |
| 685 | { |
| 686 | op->b[byte].decodable_mask |= 1 << bit; |
| 687 | var_start = 1; |
| 688 | if (op->dbytes < byte + 1) |
| 689 | op->dbytes = byte + 1; |
| 690 | } |
| 691 | else if (var_start) |
| 692 | { |
| 693 | op->var_start[i] = 1; |
| 694 | var_start = 0; |
| 695 | if (op->dbytes < byte + 1) |
| 696 | op->dbytes = byte + 1; |
| 697 | } |
| 698 | if (*lp == '1') |
| 699 | op->b[byte].decodable_bits |= 1 << bit; |
| 700 | |
| 701 | op->nbytes = byte + 1; |
| 702 | op->id[i++] = *lp; |
| 703 | } |
| 704 | } |
| 705 | } |
| 706 | } |
| 707 | else if (!skipping_section) |
| 708 | { |
| 709 | op->nlines++; |
| 710 | if (op->lines) |
| 711 | op->lines = |
| 712 | (char **) realloc (op->lines, op->nlines * sizeof (char *)); |
| 713 | else |
| 714 | op->lines = (char **) malloc (op->nlines * sizeof (char *)); |
| 715 | op->lines[op->nlines - 1] = strdup (line); |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | { |
| 720 | int i, j; |
| 721 | for (i = 0; i < n_varies; i++) |
| 722 | { |
| 723 | Vary *v = vary[i]; |
| 724 | lprintf (sim_log, "V[%s] %d\n", v->name, v->nlen); |
| 725 | for (j = 0; j < v->n_patterns; j++) |
| 726 | lprintf (sim_log, " P %02x\n", v->patterns[j]); |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | for (i = n_opcodes - 2; i >= 0; i--) |
| 731 | { |
| 732 | if (opcodes[i]->nlines == 0) |
| 733 | { |
| 734 | opcodes[i]->nlines = opcodes[i + 1]->nlines; |
| 735 | opcodes[i]->lines = opcodes[i + 1]->lines; |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | for (i = 0; i < 256; i++) |
| 740 | indirect[i].type = T_unused; |
| 741 | |
| 742 | qsort (opcodes, n_opcodes, sizeof (opcodes[0]), op_cmp); |
| 743 | |
| 744 | vlist = (VaryRef *) malloc (n_varies * sizeof (VaryRef)); |
| 745 | |
| 746 | for (i = 0; i < n_opcodes; i++) |
| 747 | { |
| 748 | int j, b, v; |
| 749 | |
| 750 | for (j = 0; j < opcodes[i]->nbytes; j++) |
| 751 | lprintf (sim_log, "%s ", |
| 752 | prmb (opcodes[i]->b[j].decodable_mask, |
| 753 | opcodes[i]->b[j].decodable_bits)); |
| 754 | lprintf (sim_log, " %s\n", opcodes[i]->comment); |
| 755 | |
| 756 | for (j = 0; j < opcodes[i]->nbytes; j++) |
| 757 | { |
| 758 | for (b = 0; b < 8; b++) |
| 759 | if (isalpha (opcodes[i]->id[j * 8 + b])) |
| 760 | for (v = 0; v < n_varies; v++) |
| 761 | if (fieldcmp (opcodes[i], j * 8 + b, vary[v]->name)) |
| 762 | { |
| 763 | int nv = opcodes[i]->nvaries++; |
| 764 | if (nv) |
| 765 | opcodes[i]->vary = |
| 766 | (VaryRef *) realloc (opcodes[i]->vary, |
| 767 | (nv + 1) * sizeof (VaryRef)); |
| 768 | else |
| 769 | opcodes[i]->vary = |
| 770 | (VaryRef *) malloc ((nv + 1) * sizeof (VaryRef)); |
| 771 | |
| 772 | opcodes[i]->vary[nv].varyno = v; |
| 773 | opcodes[i]->vary[nv].byte = j; |
| 774 | opcodes[i]->vary[nv].shift = 8 - b - vary[v]->nlen; |
| 775 | lprintf (sim_log, "[vary %s shift %d]\n", |
| 776 | vary[v]->name, opcodes[i]->vary[nv].shift); |
| 777 | } |
| 778 | |
| 779 | } |
| 780 | } |
| 781 | |
| 782 | for (i = 0; i < n_opcodes; i++) |
| 783 | { |
| 784 | int i2; |
| 785 | int bytes = opcodes[i]->dbytes; |
| 786 | |
| 787 | lprintf (sim_log, "\nmask:"); |
| 788 | for (i2 = 0; i2 < opcodes[i]->nbytes; i2++) |
| 789 | lprintf (sim_log, " %02x", opcodes[i]->b[i2].decodable_mask); |
| 790 | lprintf (sim_log, "%*s%s\n", 13 - 3 * opcodes[i]->nbytes, "", |
| 791 | opcodes[i]->comment); |
| 792 | |
| 793 | lprintf (sim_log, "bits:"); |
| 794 | for (i2 = 0; i2 < opcodes[i]->nbytes; i2++) |
| 795 | lprintf (sim_log, " %02x", opcodes[i]->b[i2].decodable_bits); |
| 796 | lprintf (sim_log, "%*s(%s) %d byte%s\n", 13 - 3 * opcodes[i]->nbytes, |
| 797 | "", opcodes[i]->id, bytes, bytes == 1 ? "" : "s"); |
| 798 | |
| 799 | store_opcode_bits (opcodes[i], 0, indirect); |
| 800 | } |
| 801 | |
| 802 | dump_lines (&prefix_text, 0, 0); |
| 803 | |
| 804 | emit_indirect (indirect, 0); |
| 805 | |
| 806 | dump_lines (&suffix_text, 0, 0); |
| 807 | |
| 808 | if (sim_log) |
| 809 | log_indirect (indirect, 0); |
| 810 | |
| 811 | return errors; |
| 812 | } |