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annotate lwasm/pseudo.c @ 369:898a41f7eb59
check for valid expressions in pass 6
| author | lost@starbug |
|---|---|
| date | Thu, 15 Apr 2010 22:26:49 -0600 |
| parents | d96c30e60ddf |
| children | 6b33faa21a0a |
| rev | line source |
|---|---|
| 347 | 1 /* |
| 2 pseudo.c | |
| 3 Copyright © 2010 William Astle | |
| 4 | |
| 5 This file is part of LWASM. | |
| 6 | |
| 7 LWASM is free software: you can redistribute it and/or modify it under the | |
| 8 terms of the GNU General Public License as published by the Free Software | |
| 9 Foundation, either version 3 of the License, or (at your option) any later | |
| 10 version. | |
| 11 | |
| 12 This program is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 15 more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License along with | |
| 18 this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | |
| 20 */ | |
| 21 | |
| 22 #include <config.h> | |
| 23 | |
| 356 | 24 #include <stdio.h> |
| 25 | |
| 347 | 26 #include "lwasm.h" |
| 27 #include "instab.h" | |
| 356 | 28 #include "input.h" |
| 347 | 29 |
| 349 | 30 #include "lw_string.h" |
| 31 | |
| 347 | 32 // for "end" |
| 33 PARSEFUNC(pseudo_parse_end) | |
| 34 { | |
| 35 lw_expr_t addr; | |
| 36 | |
| 37 as -> endseen = 1; | |
| 38 | |
| 39 if (as -> output_format != OUTPUT_DECB) | |
| 40 { | |
| 41 skip_operand(p); | |
| 42 return; | |
| 43 } | |
| 44 | |
| 45 addr = lwasm_parse_expr(as, p); | |
| 46 if (!addr) | |
| 47 { | |
| 48 lwasm_register_error(as, l, "Bad expression"); | |
| 49 addr = lw_expr_build(lw_expr_type_int, 0); | |
| 50 } | |
| 51 lwasm_save_expr(l, 0, addr); | |
| 52 } | |
| 53 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
54 EMITFUNC(pseudo_emit_end) |
| 347 | 55 { |
| 56 lw_expr_t addr; | |
| 57 | |
| 58 addr = lwasm_fetch_expr(l, 0); | |
| 59 | |
| 60 if (addr) | |
| 61 { | |
| 62 if (!lw_expr_istype(addr, lw_expr_type_int)) | |
| 63 lwasm_register_error(as, l, "Exec address not constant!"); | |
| 64 else | |
| 65 as -> execaddr = lw_expr_intval(addr); | |
| 66 } | |
| 67 as -> endseen = 1; | |
| 68 } | |
| 69 | |
| 70 PARSEFUNC(pseudo_parse_fcb) | |
| 71 { | |
| 72 int i = 0; | |
| 73 lw_expr_t e; | |
| 74 | |
| 75 for (;;) | |
| 76 { | |
| 77 e = lwasm_parse_expr(as, p); | |
| 78 if (!e) | |
| 79 { | |
| 80 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 81 break; | |
| 82 } | |
| 83 lwasm_save_expr(l, i, e); | |
| 84 i++; | |
| 85 } | |
| 86 | |
| 87 l -> len = i; | |
| 88 } | |
| 89 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
90 EMITFUNC(pseudo_emit_fcb) |
| 347 | 91 { |
| 92 int i; | |
| 93 lw_expr_t e; | |
| 94 int v; | |
| 95 | |
| 96 for (i = 0; i < l -> len; i++) | |
| 97 { | |
| 98 e = lwasm_fetch_expr(l, i); | |
| 99 lwasm_emitexpr(l, e, 1); | |
| 100 } | |
| 101 } | |
| 102 | |
| 103 PARSEFUNC(pseudo_parse_fdb) | |
| 104 { | |
| 105 int i = 0; | |
| 106 lw_expr_t e; | |
| 107 | |
| 108 for (;;) | |
| 109 { | |
| 110 e = lwasm_parse_expr(as, p); | |
| 111 if (!e) | |
| 112 { | |
| 113 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 114 break; | |
| 115 } | |
| 116 lwasm_save_expr(l, i, e); | |
| 117 i++; | |
| 118 } | |
| 119 | |
| 120 l -> len = i * 2; | |
| 121 } | |
| 122 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
123 EMITFUNC(pseudo_emit_fdb) |
| 347 | 124 { |
| 125 int i; | |
| 126 lw_expr_t e; | |
| 127 int v; | |
| 128 | |
| 129 for (i = 0; i < (l -> len)/2; i++) | |
| 130 { | |
| 131 e = lwasm_fetch_expr(l, i); | |
| 132 lwasm_emitexpr(l, e, 2); | |
| 133 } | |
| 134 } | |
| 135 | |
| 136 PARSEFUNC(pseudo_parse_fqb) | |
| 137 { | |
| 138 int i = 0; | |
| 139 lw_expr_t e; | |
| 140 | |
| 141 for (;;) | |
| 142 { | |
| 143 e = lwasm_parse_expr(as, p); | |
| 144 if (!e) | |
| 145 { | |
| 146 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 147 break; | |
| 148 } | |
| 149 lwasm_save_expr(l, i, e); | |
| 150 i++; | |
| 151 } | |
| 152 | |
| 153 l -> len = i * 4; | |
| 154 } | |
| 155 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
156 EMITFUNC(pseudo_emit_fqb) |
| 347 | 157 { |
| 158 int i; | |
| 159 lw_expr_t e; | |
| 160 int v; | |
| 161 | |
| 162 for (i = 0; i < (l -> len)/4; i++) | |
| 163 { | |
| 164 e = lwasm_fetch_expr(l, i); | |
| 165 lwasm_emitexpr(l, e, 4); | |
| 166 } | |
| 167 } | |
| 349 | 168 |
| 169 PARSEFUNC(pseudo_parse_fcc) | |
| 170 { | |
| 171 char delim; | |
| 172 int i; | |
| 173 | |
| 174 if (!**p) | |
| 175 { | |
| 176 lwasm_register_error(as, l, "Bad operand"); | |
| 177 return; | |
| 178 } | |
| 179 | |
| 180 delim = **p; | |
| 181 (*p)++; | |
| 182 | |
| 183 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 184 /* do nothing */ ; | |
| 185 | |
| 186 if ((*p)[i] != delim) | |
| 187 { | |
| 188 lwasm_register_error(as, l, "Bad operand"); | |
| 189 return; | |
| 190 } | |
| 191 | |
| 192 l -> lstr = lw_strndup(*p, i); | |
| 193 (*p) += i + 1; | |
| 194 | |
| 195 l -> len = i; | |
| 196 } | |
| 197 | |
| 198 EMITFUNC(pseudo_emit_fcc) | |
| 199 { | |
| 200 int i; | |
| 201 | |
| 202 for (i = 0; i < l -> len; i++) | |
| 203 lwasm_emit(l, l -> lstr[i]); | |
| 204 } | |
| 205 | |
| 206 PARSEFUNC(pseudo_parse_fcs) | |
| 207 { | |
| 208 char delim; | |
| 209 int i; | |
| 210 | |
| 211 if (!**p) | |
| 212 { | |
| 213 lwasm_register_error(as, l, "Bad operand"); | |
| 214 return; | |
| 215 } | |
| 216 | |
| 217 delim = **p; | |
| 218 (*p)++; | |
| 219 | |
| 220 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 221 /* do nothing */ ; | |
| 222 | |
| 223 if ((*p)[i] != delim) | |
| 224 { | |
| 225 lwasm_register_error(as, l, "Bad operand"); | |
| 226 return; | |
| 227 } | |
| 228 | |
| 229 l -> lstr = lw_strndup(*p, i); | |
| 230 (*p) += i + 1; | |
| 231 | |
| 232 l -> len = i; | |
| 233 } | |
| 234 | |
| 235 EMITFUNC(pseudo_emit_fcs) | |
| 236 { | |
| 237 int i; | |
| 238 | |
| 239 for (i = 0; i < l -> len - 1; i++) | |
| 240 lwasm_emit(l, l -> lstr[i]); | |
| 241 lwasm_emit(l, l -> lstr[i] | 0x80); | |
| 242 } | |
| 243 | |
| 244 PARSEFUNC(pseudo_parse_fcn) | |
| 245 { | |
| 246 char delim; | |
| 247 int i; | |
| 248 | |
| 249 if (!**p) | |
| 250 { | |
| 251 lwasm_register_error(as, l, "Bad operand"); | |
| 252 return; | |
| 253 } | |
| 254 | |
| 255 delim = **p; | |
| 256 (*p)++; | |
| 257 | |
| 258 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 259 /* do nothing */ ; | |
| 260 | |
| 261 if ((*p)[i] != delim) | |
| 262 { | |
| 263 lwasm_register_error(as, l, "Bad operand"); | |
| 264 return; | |
| 265 } | |
| 266 | |
| 267 l -> lstr = lw_strndup(*p, i); | |
| 268 (*p) += i + 1; | |
| 269 | |
| 270 l -> len = i; | |
| 271 } | |
| 272 | |
| 273 EMITFUNC(pseudo_emit_fcn) | |
| 274 { | |
| 275 int i; | |
| 276 | |
| 277 for (i = 0; i < l -> len; i++) | |
| 278 lwasm_emit(l, l -> lstr[i]); | |
| 279 lwasm_emit(l, 0); | |
| 280 } | |
| 281 | |
| 282 PARSEFUNC(pseudo_parse_rmb) | |
| 283 { | |
| 284 lw_expr_t expr; | |
| 285 | |
| 286 expr = lwasm_parse_expr(as, p); | |
| 287 if (!expr) | |
| 288 { | |
| 289 lwasm_register_error(as, l, "Bad expression"); | |
| 290 } | |
| 291 | |
| 292 lwasm_save_expr(l, 0, expr); | |
| 293 } | |
| 294 | |
| 295 RESOLVEFUNC(pseudo_resolve_rmb) | |
| 296 { | |
| 297 lw_expr_t expr; | |
| 298 | |
| 299 if (l -> len >= 0) | |
| 300 return; | |
| 301 | |
| 302 expr = lwasm_fetch_expr(l, 0); | |
| 303 | |
| 304 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 305 { | |
| 306 l -> len = lw_expr_intval(expr); | |
| 307 } | |
| 308 } | |
| 309 | |
| 310 EMITFUNC(pseudo_emit_rmb) | |
| 311 { | |
| 312 if (l -> len < 0) | |
| 313 lwasm_register_error(as, l, "Expression not constant"); | |
| 314 } | |
| 315 | |
| 316 PARSEFUNC(pseudo_parse_rmd) | |
| 317 { | |
| 318 lw_expr_t expr; | |
| 319 | |
| 320 expr = lwasm_parse_expr(as, p); | |
| 321 if (!expr) | |
| 322 { | |
| 323 lwasm_register_error(as, l, "Bad expression"); | |
| 324 } | |
| 325 | |
| 326 lwasm_save_expr(l, 0, expr); | |
| 327 } | |
| 328 | |
| 329 RESOLVEFUNC(pseudo_resolve_rmd) | |
| 330 { | |
| 331 lw_expr_t expr; | |
| 332 | |
| 333 if (l -> len >= 0) | |
| 334 return; | |
| 335 | |
| 336 expr = lwasm_fetch_expr(l, 0); | |
| 337 | |
| 338 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 339 { | |
| 340 l -> len = lw_expr_intval(expr) * 2; | |
| 341 } | |
| 342 } | |
| 343 | |
| 344 EMITFUNC(pseudo_emit_rmd) | |
| 345 { | |
| 346 if (l -> len < 0) | |
| 347 lwasm_register_error(as, l, "Expression not constant"); | |
| 348 } | |
| 349 | |
| 350 | |
| 351 PARSEFUNC(pseudo_parse_rmq) | |
| 352 { | |
| 353 lw_expr_t expr; | |
| 354 | |
| 355 expr = lwasm_parse_expr(as, p); | |
| 356 if (!expr) | |
| 357 { | |
| 358 lwasm_register_error(as, l, "Bad expression"); | |
| 359 } | |
| 360 | |
| 361 lwasm_save_expr(l, 0, expr); | |
| 362 } | |
| 363 | |
| 364 RESOLVEFUNC(pseudo_resolve_rmq) | |
| 365 { | |
| 366 lw_expr_t expr; | |
| 367 | |
| 368 if (l -> len >= 0) | |
| 369 return; | |
| 370 | |
| 371 expr = lwasm_fetch_expr(l, 0); | |
| 372 | |
| 373 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 374 { | |
| 375 l -> len = lw_expr_intval(expr) * 4; | |
| 376 } | |
| 377 } | |
| 378 | |
| 379 EMITFUNC(pseudo_emit_rmq) | |
| 380 { | |
| 381 if (l -> len < 0) | |
| 382 lwasm_register_error(as, l, "Expression not constant"); | |
| 383 } | |
| 384 | |
| 385 | |
| 386 PARSEFUNC(pseudo_parse_zmq) | |
| 387 { | |
| 388 lw_expr_t expr; | |
| 389 | |
| 390 expr = lwasm_parse_expr(as, p); | |
| 391 if (!expr) | |
| 392 { | |
| 393 lwasm_register_error(as, l, "Bad expression"); | |
| 394 } | |
| 395 | |
| 396 lwasm_save_expr(l, 0, expr); | |
| 397 } | |
| 398 | |
| 399 RESOLVEFUNC(pseudo_resolve_zmq) | |
| 400 { | |
| 401 lw_expr_t expr; | |
| 402 | |
| 403 if (l -> len >= 0) | |
| 404 return; | |
| 405 | |
| 406 expr = lwasm_fetch_expr(l, 0); | |
| 407 | |
| 408 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 409 { | |
| 410 l -> len = lw_expr_intval(expr) * 4; | |
| 411 } | |
| 412 } | |
| 413 | |
| 414 EMITFUNC(pseudo_emit_zmq) | |
| 415 { | |
| 416 int i; | |
| 417 | |
| 418 if (l -> len < 0) | |
| 419 { | |
| 420 lwasm_register_error(as, l, "Expression not constant"); | |
| 421 return; | |
| 422 } | |
| 423 | |
| 424 for (i = 0; i < l -> len; i++) | |
| 425 lwasm_emit(l, 0); | |
| 426 } | |
| 427 | |
| 428 | |
| 429 PARSEFUNC(pseudo_parse_zmd) | |
| 430 { | |
| 431 lw_expr_t expr; | |
| 432 | |
| 433 expr = lwasm_parse_expr(as, p); | |
| 434 if (!expr) | |
| 435 { | |
| 436 lwasm_register_error(as, l, "Bad expression"); | |
| 437 } | |
| 438 | |
| 439 lwasm_save_expr(l, 0, expr); | |
| 440 } | |
| 441 | |
| 442 RESOLVEFUNC(pseudo_resolve_zmd) | |
| 443 { | |
| 444 lw_expr_t expr; | |
| 445 | |
| 446 if (l -> len >= 0) | |
| 447 return; | |
| 448 | |
| 449 expr = lwasm_fetch_expr(l, 0); | |
| 450 | |
| 451 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 452 { | |
| 453 l -> len = lw_expr_intval(expr) * 2; | |
| 454 } | |
| 455 } | |
| 456 | |
| 457 EMITFUNC(pseudo_emit_zmd) | |
| 458 { | |
| 459 int i; | |
| 460 | |
| 461 if (l -> len < 0) | |
| 462 { | |
| 463 lwasm_register_error(as, l, "Expression not constant"); | |
| 464 return; | |
| 465 } | |
| 466 | |
| 467 for (i = 0; i < l -> len; i++) | |
| 468 lwasm_emit(l, 0); | |
| 469 } | |
| 470 | |
| 471 PARSEFUNC(pseudo_parse_zmb) | |
| 472 { | |
| 473 lw_expr_t expr; | |
| 474 | |
| 475 expr = lwasm_parse_expr(as, p); | |
| 476 if (!expr) | |
| 477 { | |
| 478 lwasm_register_error(as, l, "Bad expression"); | |
| 479 } | |
| 480 | |
| 481 lwasm_save_expr(l, 0, expr); | |
| 482 } | |
| 483 | |
| 484 RESOLVEFUNC(pseudo_resolve_zmb) | |
| 485 { | |
| 486 lw_expr_t expr; | |
| 487 | |
| 488 if (l -> len >= 0) | |
| 489 return; | |
| 490 | |
| 491 expr = lwasm_fetch_expr(l, 0); | |
| 492 | |
| 493 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 494 { | |
| 495 l -> len = lw_expr_intval(expr); | |
| 496 } | |
| 497 } | |
| 498 | |
| 499 EMITFUNC(pseudo_emit_zmb) | |
| 500 { | |
| 501 int i; | |
| 502 | |
| 503 if (l -> len < 0) | |
| 504 { | |
| 505 lwasm_register_error(as, l, "Expression not constant"); | |
| 506 return; | |
| 507 } | |
| 508 | |
| 509 for (i = 0; i < l -> len; i++) | |
| 510 lwasm_emit(l, 0); | |
| 511 } | |
| 350 | 512 |
| 513 PARSEFUNC(pseudo_parse_org) | |
| 514 { | |
| 515 lw_expr_t e; | |
| 516 | |
| 351 | 517 l -> len = 0; |
| 518 | |
| 350 | 519 e = lwasm_parse_expr(as, p); |
| 520 if (!e) | |
| 521 { | |
| 522 lwasm_register_error(as, l, "Bad operand"); | |
| 523 return; | |
| 524 } | |
| 525 | |
| 526 lw_expr_destroy(l -> addr); | |
| 527 l -> addr = e; | |
| 528 l -> len = 0; | |
| 529 } | |
| 530 | |
| 531 PARSEFUNC(pseudo_parse_equ) | |
| 532 { | |
| 533 lw_expr_t e; | |
| 534 | |
| 351 | 535 l -> len = 0; |
| 536 | |
| 350 | 537 if (!(l -> sym)) |
| 538 { | |
| 539 lwasm_register_error(as, l, "Missing symbol"); | |
| 540 return; | |
| 541 } | |
| 542 | |
| 543 e = lwasm_parse_expr(as, p); | |
| 544 if (!e) | |
| 545 { | |
| 546 lwasm_register_error(as, l, "Bad operand"); | |
| 547 return; | |
| 548 } | |
| 549 | |
| 550 register_symbol(as, l, l -> sym, e, symbol_flag_none); | |
| 551 l -> symset = 1; | |
| 552 } | |
| 351 | 553 |
| 554 PARSEFUNC(pseudo_parse_set) | |
| 555 { | |
| 556 lw_expr_t e; | |
| 557 | |
| 558 l -> len = 0; | |
| 559 | |
| 560 if (!(l -> sym)) | |
| 561 { | |
| 562 lwasm_register_error(as, l, "Missing symbol"); | |
| 563 return; | |
| 564 } | |
| 565 | |
| 566 e = lwasm_parse_expr(as, p); | |
| 567 if (!e) | |
| 568 { | |
| 569 lwasm_register_error(as, l, "Bad operand"); | |
| 570 return; | |
| 571 } | |
| 572 | |
| 573 register_symbol(as, l, l -> sym, e, symbol_flag_set); | |
| 574 l -> symset = 1; | |
| 575 } | |
| 576 | |
| 577 PARSEFUNC(pseudo_parse_setdp) | |
| 578 { | |
| 579 lw_expr_t e; | |
| 580 | |
| 581 l -> len = 0; | |
| 582 | |
| 583 if (as -> output_format == OUTPUT_OBJ) | |
| 584 { | |
| 585 lwasm_register_error(as, l, "SETDP not permitted for object target"); | |
| 586 return; | |
| 587 } | |
| 588 | |
| 589 e = lwasm_parse_expr(as, p); | |
| 590 if (!e) | |
| 591 { | |
| 592 lwasm_register_error(as, l, "Bad operand"); | |
| 593 return; | |
| 594 } | |
| 595 | |
| 596 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 597 { | |
| 598 lwasm_register_error(as, l, "SETDP must be constant on pass 1"); | |
| 599 return; | |
| 600 } | |
| 601 l -> dpval = lw_expr_intval(e) & 0xff; | |
| 602 } | |
| 603 | |
| 604 PARSEFUNC(pseudo_parse_ifp1) | |
| 605 { | |
| 606 l -> len = 0; | |
| 607 | |
| 608 if (as -> skipcond && !(as -> skipmacro)) | |
| 609 { | |
| 610 as -> skipcount++; | |
| 611 skip_operand(p); | |
| 612 return; | |
| 613 } | |
| 614 | |
| 615 lwasm_register_warning(as, l, "IFP1 if is not supported; ignoring"); | |
| 616 | |
| 617 } | |
| 618 | |
| 619 PARSEFUNC(pseudo_parse_ifp2) | |
| 620 { | |
| 621 l -> len = 0; | |
| 622 | |
| 623 if (as -> skipcond && !(as -> skipmacro)) | |
| 624 { | |
| 625 as -> skipcount++; | |
| 626 skip_operand(p); | |
| 627 return; | |
| 628 } | |
| 629 | |
| 630 lwasm_register_warning(as, l, "IFP2 if is not supported; ignoring"); | |
| 631 } | |
| 632 | |
| 633 PARSEFUNC(pseudo_parse_ifeq) | |
| 634 { | |
| 635 lw_expr_t e; | |
| 636 | |
| 637 l -> len = 0; | |
| 638 | |
| 639 if (as -> skipcond && !(as -> skipmacro)) | |
| 640 { | |
| 641 as -> skipcount++; | |
| 642 skip_operand(p); | |
| 643 return; | |
| 644 } | |
| 645 | |
| 646 e = lwasm_parse_expr(as, p); | |
| 647 if (!e) | |
| 648 { | |
| 649 lwasm_register_error(as, l, "Bad expression"); | |
| 650 return; | |
| 651 } | |
| 652 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 653 { | |
| 654 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 655 return; | |
| 656 } | |
| 657 if (lw_expr_intval(e) != 0) | |
| 658 { | |
| 659 as -> skipcond = 1; | |
| 660 as -> skipcount = 1; | |
| 661 } | |
| 662 } | |
| 663 | |
| 664 PARSEFUNC(pseudo_parse_ifne) | |
| 665 { | |
| 666 lw_expr_t e; | |
| 667 | |
| 668 l -> len = 0; | |
| 669 | |
| 670 if (as -> skipcond && !(as -> skipmacro)) | |
| 671 { | |
| 672 as -> skipcount++; | |
| 673 skip_operand(p); | |
| 674 return; | |
| 675 } | |
| 676 | |
| 677 e = lwasm_parse_expr(as, p); | |
| 678 if (!e) | |
| 679 { | |
| 680 lwasm_register_error(as, l, "Bad expression"); | |
| 681 return; | |
| 682 } | |
| 683 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 684 { | |
| 685 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 686 return; | |
| 687 } | |
| 688 if (lw_expr_intval(e) == 0) | |
| 689 { | |
| 690 as -> skipcond = 1; | |
| 691 as -> skipcount = 1; | |
| 692 } | |
| 693 } | |
| 694 | |
| 695 | |
| 696 PARSEFUNC(pseudo_parse_ifgt) | |
| 697 { | |
| 698 lw_expr_t e; | |
| 699 | |
| 700 l -> len = 0; | |
| 701 | |
| 702 if (as -> skipcond && !(as -> skipmacro)) | |
| 703 { | |
| 704 as -> skipcount++; | |
| 705 skip_operand(p); | |
| 706 return; | |
| 707 } | |
| 708 | |
| 709 e = lwasm_parse_expr(as, p); | |
| 710 if (!e) | |
| 711 { | |
| 712 lwasm_register_error(as, l, "Bad expression"); | |
| 713 return; | |
| 714 } | |
| 715 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 716 { | |
| 717 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 718 return; | |
| 719 } | |
| 720 if (lw_expr_intval(e) <= 0) | |
| 721 { | |
| 722 as -> skipcond = 1; | |
| 723 as -> skipcount = 1; | |
| 724 } | |
| 725 } | |
| 726 | |
| 727 PARSEFUNC(pseudo_parse_ifge) | |
| 728 { | |
| 729 lw_expr_t e; | |
| 730 | |
| 731 l -> len = 0; | |
| 732 | |
| 733 if (as -> skipcond && !(as -> skipmacro)) | |
| 734 { | |
| 735 as -> skipcount++; | |
| 736 skip_operand(p); | |
| 737 return; | |
| 738 } | |
| 739 | |
| 740 e = lwasm_parse_expr(as, p); | |
| 741 if (!e) | |
| 742 { | |
| 743 lwasm_register_error(as, l, "Bad expression"); | |
| 744 return; | |
| 745 } | |
| 746 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 747 { | |
| 748 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 749 return; | |
| 750 } | |
| 751 if (lw_expr_intval(e) < 0) | |
| 752 { | |
| 753 as -> skipcond = 1; | |
| 754 as -> skipcount = 1; | |
| 755 } | |
| 756 } | |
| 757 | |
| 758 PARSEFUNC(pseudo_parse_iflt) | |
| 759 { | |
| 760 lw_expr_t e; | |
| 761 | |
| 762 l -> len = 0; | |
| 763 | |
| 764 if (as -> skipcond && !(as -> skipmacro)) | |
| 765 { | |
| 766 as -> skipcount++; | |
| 767 skip_operand(p); | |
| 768 return; | |
| 769 } | |
| 770 | |
| 771 e = lwasm_parse_expr(as, p); | |
| 772 if (!e) | |
| 773 { | |
| 774 lwasm_register_error(as, l, "Bad expression"); | |
| 775 return; | |
| 776 } | |
| 777 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 778 { | |
| 779 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 780 return; | |
| 781 } | |
| 782 if (lw_expr_intval(e) >= 0) | |
| 783 { | |
| 784 as -> skipcond = 1; | |
| 785 as -> skipcount = 1; | |
| 786 } | |
| 787 } | |
| 788 | |
| 789 PARSEFUNC(pseudo_parse_ifle) | |
| 790 { | |
| 791 lw_expr_t e; | |
| 792 | |
| 793 l -> len = 0; | |
| 794 | |
| 795 if (as -> skipcond && !(as -> skipmacro)) | |
| 796 { | |
| 797 as -> skipcount++; | |
| 798 skip_operand(p); | |
| 799 return; | |
| 800 } | |
| 801 | |
| 802 e = lwasm_parse_expr(as, p); | |
| 803 if (!e) | |
| 804 { | |
| 805 lwasm_register_error(as, l, "Bad expression"); | |
| 806 return; | |
| 807 } | |
| 808 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 809 { | |
| 810 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 811 return; | |
| 812 } | |
| 813 if (lw_expr_intval(e) > 0) | |
| 814 { | |
| 815 as -> skipcond = 1; | |
| 816 as -> skipcount = 1; | |
| 817 } | |
| 818 } | |
| 819 | |
| 820 PARSEFUNC(pseudo_parse_endc) | |
| 821 { | |
| 822 l -> len = 0; | |
| 823 if (as -> skipcond && !(as -> skipmacro)) | |
| 824 { | |
| 825 as -> skipcount--; | |
| 826 if (as -> skipcount < 0) | |
| 827 as -> skipcond = 0; | |
| 828 } | |
| 829 } | |
| 830 | |
| 831 PARSEFUNC(pseudo_parse_else) | |
| 832 { | |
| 833 l -> len = 0; | |
| 834 | |
| 835 if (as -> skipmacro) | |
| 836 return; | |
| 837 | |
| 838 if (as -> skipcond) | |
| 839 { | |
| 840 if (as -> skipcount == 1) | |
| 841 { | |
| 842 as -> skipcount = 0; | |
| 843 as -> skipcond = 0; | |
| 844 } | |
| 845 return; | |
| 846 } | |
| 847 as -> skipcond = 1; | |
| 848 as -> skipcount = 1; | |
| 849 } | |
| 850 | |
| 851 PARSEFUNC(pseudo_parse_ifdef) | |
| 852 { | |
| 853 char *sym; | |
| 854 int i; | |
| 855 struct symtabe *s; | |
| 856 | |
| 857 l -> len = 0; | |
| 858 | |
| 859 if (as -> skipcond && !(as -> skipmacro)) | |
| 860 { | |
| 861 as -> skipcount++; | |
| 862 skip_operand(p); | |
| 863 return; | |
| 864 } | |
| 865 | |
| 866 for (i = 0; (*p)[i] && !isspace((*p)[i]); i++) | |
| 867 /* do nothing */ ; | |
| 868 | |
| 869 sym = lw_strndup(*p, i); | |
| 870 | |
|
363
d96c30e60ddf
Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents:
356
diff
changeset
|
871 s = lookup_symbol(as, l, sym); |
| 351 | 872 |
| 873 lw_free(sym); | |
| 874 | |
| 875 if (!s) | |
| 876 { | |
| 877 as -> skipcond = 1; | |
| 878 as -> skipcount = 1; | |
| 879 } | |
| 880 } | |
| 881 | |
| 882 PARSEFUNC(pseudo_parse_ifndef) | |
| 883 { | |
| 884 char *sym; | |
| 885 int i; | |
| 886 struct symtabe *s; | |
| 887 | |
| 888 l -> len = 0; | |
| 889 | |
| 890 if (as -> skipcond && !(as -> skipmacro)) | |
| 891 { | |
| 892 as -> skipcount++; | |
| 893 skip_operand(p); | |
| 894 return; | |
| 895 } | |
| 896 | |
| 897 for (i = 0; (*p)[i] && !isspace((*p)[i]); i++) | |
| 898 /* do nothing */ ; | |
| 899 | |
| 900 sym = lw_strndup(*p, i); | |
| 901 | |
|
363
d96c30e60ddf
Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents:
356
diff
changeset
|
902 s = lookup_symbol(as, l, sym); |
| 351 | 903 |
| 904 lw_free(sym); | |
| 905 | |
| 906 if (s) | |
| 907 { | |
| 908 as -> skipcond = 1; | |
| 909 as -> skipcount = 1; | |
| 910 } | |
| 911 } | |
| 912 | |
| 354 | 913 PARSEFUNC(pseudo_parse_error) |
| 914 { | |
| 915 lwasm_register_error(as, l, "User error: %s", *p); | |
| 916 skip_operand(p); | |
| 917 } | |
| 356 | 918 |
| 919 PARSEFUNC(pseudo_parse_includebin) | |
| 920 { | |
| 921 char *fn, *p2; | |
| 922 int delim = 0; | |
| 923 FILE *fp; | |
| 924 long flen; | |
| 925 | |
| 926 if (!**p) | |
| 927 { | |
| 928 lwasm_register_error(as, l, "Missing filename"); | |
| 929 return; | |
| 930 } | |
| 931 | |
| 932 if (**p == '"' || **p == '\'') | |
| 933 { | |
| 934 delim = **p; | |
| 935 (*p)++; | |
| 936 | |
| 937 for (p2 = *p; *p2 && *p2 != delim; p2++) | |
| 938 /* do nothing */ ; | |
| 939 } | |
| 940 else | |
| 941 { | |
| 942 for (p2 = *p; *p2 && !isspace(*p2); p2++) | |
| 943 /* do nothing */ ; | |
| 944 } | |
| 945 fn = lw_strndup(*p, p2 - *p); | |
| 946 | |
| 947 if (delim && **p) | |
| 948 (*p)++; | |
| 949 | |
| 950 fp = input_open_standalone(as, fn); | |
| 951 if (!fp) | |
| 952 { | |
| 953 lwasm_register_error(as, l, "Cannot open file"); | |
| 954 lw_free(fn); | |
| 955 return; | |
| 956 } | |
| 957 | |
| 958 l -> lstr = fn; | |
| 959 | |
| 960 fseek(fp, 0, SEEK_END); | |
| 961 flen = ftell(fp); | |
| 962 fclose(fp); | |
| 963 | |
| 964 l -> len = flen; | |
| 965 } | |
| 966 | |
| 967 EMITFUNC(pseudo_emit_includebin) | |
| 968 { | |
| 969 FILE *fp; | |
| 970 int c; | |
| 971 | |
| 972 fp = input_open_standalone(as, l -> lstr); | |
| 973 if (!fp) | |
| 974 { | |
| 975 lwasm_register_error(as, l, "Cannot open file (emit)!"); | |
| 976 return; | |
| 977 } | |
| 978 | |
| 979 for (;;) | |
| 980 { | |
| 981 c = fgetc(fp); | |
| 982 if (c == EOF) | |
| 983 { | |
| 984 fclose(fp); | |
| 985 return; | |
| 986 } | |
| 987 lwasm_emit(l, c); | |
| 988 } | |
| 989 } | |
| 990 | |
| 991 PARSEFUNC(pseudo_parse_include) | |
| 992 { | |
| 993 char *fn, *p2; | |
| 994 int delim = 0; | |
| 995 | |
| 996 if (!**p) | |
| 997 { | |
| 998 lwasm_register_error(as, l, "Missing filename"); | |
| 999 return; | |
| 1000 } | |
| 1001 | |
| 1002 if (**p == '"' || **p == '\'') | |
| 1003 { | |
| 1004 delim = **p; | |
| 1005 (*p)++; | |
| 1006 | |
| 1007 for (p2 = *p; *p2 && *p2 != delim; p2++) | |
| 1008 /* do nothing */ ; | |
| 1009 } | |
| 1010 else | |
| 1011 { | |
| 1012 for (p2 = *p; *p2 && !isspace(*p2); p2++) | |
| 1013 /* do nothing */ ; | |
| 1014 } | |
| 1015 fn = lw_strndup(*p, p2 - *p); | |
| 1016 | |
| 1017 if (delim && **p) | |
| 1018 (*p)++; | |
| 1019 | |
| 1020 input_open(as, fn); | |
| 1021 | |
| 1022 l -> len = 0; | |
| 1023 } | |
| 1024 | |
| 1025 PARSEFUNC(pseudo_parse_align) | |
| 1026 { | |
| 1027 lw_expr_t e; | |
| 1028 | |
| 1029 if (!**p) | |
| 1030 { | |
| 1031 lwasm_register_error(as, l, "Bad operand"); | |
| 1032 return; | |
| 1033 } | |
| 1034 | |
| 1035 e = lwasm_parse_expr(as, p); | |
| 1036 if (!e) | |
| 1037 { | |
| 1038 lwasm_register_error(as, l, "Bad operand"); | |
| 1039 return; | |
| 1040 } | |
| 1041 | |
| 1042 lwasm_save_expr(l, 0, e); | |
| 1043 | |
| 1044 if (**p == ',') | |
| 1045 { | |
| 1046 e = lwasm_parse_expr(as, p); | |
| 1047 } | |
| 1048 else | |
| 1049 { | |
| 1050 e = lw_expr_build(lw_expr_type_int, 0); | |
| 1051 } | |
| 1052 if (!e) | |
| 1053 { | |
| 1054 lwasm_register_error(as, l, "Bad padding"); | |
| 1055 return; | |
| 1056 } | |
| 1057 | |
| 1058 lwasm_save_expr(l, 1, e); | |
| 1059 } | |
| 1060 | |
| 1061 RESOLVEFUNC(pseudo_resolve_align) | |
| 1062 { | |
| 1063 lw_expr_t e; | |
| 1064 int align; | |
| 1065 | |
| 1066 e = lwasm_fetch_expr(l, 0); | |
| 1067 | |
| 1068 if (lw_expr_istype(e, lw_expr_type_int)) | |
| 1069 { | |
| 1070 align = lw_expr_intval(e); | |
| 1071 if (align < 1) | |
| 1072 { | |
| 1073 lwasm_register_error(as, l, "Invalid alignment"); | |
| 1074 return; | |
| 1075 } | |
| 1076 } | |
| 1077 | |
| 1078 if (lw_expr_istype(l -> addr, lw_expr_type_int)) | |
| 1079 { | |
| 1080 int a; | |
| 1081 a = lw_expr_intval(l -> addr); | |
| 1082 if (a % align == 0) | |
| 1083 { | |
| 1084 l -> len = 0; | |
| 1085 return; | |
| 1086 } | |
| 1087 l -> len = align - (a % align); | |
| 1088 return; | |
| 1089 } | |
| 1090 } | |
| 1091 | |
| 1092 EMITFUNC(pseudo_emit_align) | |
| 1093 { | |
| 1094 lw_expr_t e; | |
| 1095 int i; | |
| 1096 | |
| 1097 e = lwasm_fetch_expr(l, 1); | |
| 1098 for (i = 0; i < l -> len; i++) | |
| 1099 { | |
| 1100 lwasm_emitexpr(l, e, 1); | |
| 1101 } | |
| 1102 } |