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annotate lwasm/pseudo.c @ 384:38b50ce6967a
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| author | lost@starbug |
|---|---|
| date | Sat, 15 May 2010 20:46:04 -0600 |
| parents | eacdae8a1575 |
| children | af5f2c51db76 |
| 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; | |
| 370 | 38 l -> len = 0; |
| 347 | 39 |
| 40 if (as -> output_format != OUTPUT_DECB) | |
| 41 { | |
| 42 skip_operand(p); | |
| 43 return; | |
| 44 } | |
| 45 | |
| 370 | 46 if (!**p) |
| 47 { | |
| 48 addr = lw_expr_build(lw_expr_type_int, 0); | |
| 49 } | |
| 50 else | |
| 51 { | |
| 52 addr = lwasm_parse_expr(as, p); | |
| 53 } | |
| 347 | 54 if (!addr) |
| 55 { | |
| 56 lwasm_register_error(as, l, "Bad expression"); | |
| 57 addr = lw_expr_build(lw_expr_type_int, 0); | |
| 58 } | |
| 59 lwasm_save_expr(l, 0, addr); | |
| 60 } | |
| 61 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
62 EMITFUNC(pseudo_emit_end) |
| 347 | 63 { |
| 64 lw_expr_t addr; | |
| 65 | |
| 66 addr = lwasm_fetch_expr(l, 0); | |
| 67 | |
| 68 if (addr) | |
| 69 { | |
| 70 if (!lw_expr_istype(addr, lw_expr_type_int)) | |
| 71 lwasm_register_error(as, l, "Exec address not constant!"); | |
| 72 else | |
| 73 as -> execaddr = lw_expr_intval(addr); | |
| 74 } | |
| 75 as -> endseen = 1; | |
| 76 } | |
| 77 | |
| 78 PARSEFUNC(pseudo_parse_fcb) | |
| 79 { | |
| 80 int i = 0; | |
| 81 lw_expr_t e; | |
| 82 | |
| 83 for (;;) | |
| 84 { | |
| 85 e = lwasm_parse_expr(as, p); | |
| 86 if (!e) | |
| 87 { | |
| 88 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 89 break; | |
| 90 } | |
| 382 | 91 lwasm_save_expr(l, i++, e); |
| 92 if (**p != ',') | |
| 93 break; | |
| 94 (*p)++; | |
| 347 | 95 } |
| 96 | |
| 97 l -> len = i; | |
| 98 } | |
| 99 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
100 EMITFUNC(pseudo_emit_fcb) |
| 347 | 101 { |
| 102 int i; | |
| 103 lw_expr_t e; | |
| 104 int v; | |
| 105 | |
| 106 for (i = 0; i < l -> len; i++) | |
| 107 { | |
| 108 e = lwasm_fetch_expr(l, i); | |
| 109 lwasm_emitexpr(l, e, 1); | |
| 110 } | |
| 111 } | |
| 112 | |
| 113 PARSEFUNC(pseudo_parse_fdb) | |
| 114 { | |
| 115 int i = 0; | |
| 116 lw_expr_t e; | |
| 117 | |
| 118 for (;;) | |
| 119 { | |
| 120 e = lwasm_parse_expr(as, p); | |
| 121 if (!e) | |
| 122 { | |
| 382 | 123 lwasm_register_error(as, l, "Bad expression (#%d)", i); |
| 347 | 124 break; |
| 125 } | |
| 382 | 126 lwasm_save_expr(l, i++, e); |
| 127 if (**p != ',') | |
| 128 break; | |
| 129 (*p)++; | |
| 347 | 130 } |
| 131 | |
| 132 l -> len = i * 2; | |
| 133 } | |
| 134 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
135 EMITFUNC(pseudo_emit_fdb) |
| 347 | 136 { |
| 137 int i; | |
| 138 lw_expr_t e; | |
| 139 int v; | |
| 140 | |
| 141 for (i = 0; i < (l -> len)/2; i++) | |
| 142 { | |
| 143 e = lwasm_fetch_expr(l, i); | |
| 144 lwasm_emitexpr(l, e, 2); | |
| 145 } | |
| 146 } | |
| 147 | |
| 148 PARSEFUNC(pseudo_parse_fqb) | |
| 149 { | |
| 150 int i = 0; | |
| 151 lw_expr_t e; | |
| 152 | |
| 153 for (;;) | |
| 154 { | |
| 155 e = lwasm_parse_expr(as, p); | |
| 156 if (!e) | |
| 157 { | |
| 158 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 159 break; | |
| 160 } | |
| 382 | 161 lwasm_save_expr(l, i++, e); |
| 162 if (**p != ',') | |
| 163 break; | |
| 164 (*p)++; | |
| 347 | 165 } |
| 166 | |
| 167 l -> len = i * 4; | |
| 168 } | |
| 169 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
170 EMITFUNC(pseudo_emit_fqb) |
| 347 | 171 { |
| 172 int i; | |
| 173 lw_expr_t e; | |
| 174 int v; | |
| 175 | |
| 176 for (i = 0; i < (l -> len)/4; i++) | |
| 177 { | |
| 178 e = lwasm_fetch_expr(l, i); | |
| 179 lwasm_emitexpr(l, e, 4); | |
| 180 } | |
| 181 } | |
| 349 | 182 |
| 183 PARSEFUNC(pseudo_parse_fcc) | |
| 184 { | |
| 185 char delim; | |
| 186 int i; | |
| 187 | |
| 188 if (!**p) | |
| 189 { | |
| 190 lwasm_register_error(as, l, "Bad operand"); | |
| 191 return; | |
| 192 } | |
| 193 | |
| 194 delim = **p; | |
| 195 (*p)++; | |
| 196 | |
| 197 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 198 /* do nothing */ ; | |
| 199 | |
| 200 if ((*p)[i] != delim) | |
| 201 { | |
| 202 lwasm_register_error(as, l, "Bad operand"); | |
| 203 return; | |
| 204 } | |
| 205 | |
| 206 l -> lstr = lw_strndup(*p, i); | |
| 207 (*p) += i + 1; | |
| 208 | |
| 209 l -> len = i; | |
| 210 } | |
| 211 | |
| 212 EMITFUNC(pseudo_emit_fcc) | |
| 213 { | |
| 214 int i; | |
| 215 | |
| 216 for (i = 0; i < l -> len; i++) | |
| 217 lwasm_emit(l, l -> lstr[i]); | |
| 218 } | |
| 219 | |
| 220 PARSEFUNC(pseudo_parse_fcs) | |
| 221 { | |
| 222 char delim; | |
| 223 int i; | |
| 224 | |
| 225 if (!**p) | |
| 226 { | |
| 227 lwasm_register_error(as, l, "Bad operand"); | |
| 228 return; | |
| 229 } | |
| 230 | |
| 231 delim = **p; | |
| 232 (*p)++; | |
| 233 | |
| 234 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 235 /* do nothing */ ; | |
| 236 | |
| 237 if ((*p)[i] != delim) | |
| 238 { | |
| 239 lwasm_register_error(as, l, "Bad operand"); | |
| 240 return; | |
| 241 } | |
| 242 | |
| 243 l -> lstr = lw_strndup(*p, i); | |
| 244 (*p) += i + 1; | |
| 245 | |
| 246 l -> len = i; | |
| 247 } | |
| 248 | |
| 249 EMITFUNC(pseudo_emit_fcs) | |
| 250 { | |
| 251 int i; | |
| 252 | |
| 253 for (i = 0; i < l -> len - 1; i++) | |
| 254 lwasm_emit(l, l -> lstr[i]); | |
| 255 lwasm_emit(l, l -> lstr[i] | 0x80); | |
| 256 } | |
| 257 | |
| 258 PARSEFUNC(pseudo_parse_fcn) | |
| 259 { | |
| 260 char delim; | |
| 261 int i; | |
| 262 | |
| 263 if (!**p) | |
| 264 { | |
| 265 lwasm_register_error(as, l, "Bad operand"); | |
| 266 return; | |
| 267 } | |
| 268 | |
| 269 delim = **p; | |
| 270 (*p)++; | |
| 271 | |
| 272 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 273 /* do nothing */ ; | |
| 274 | |
| 275 if ((*p)[i] != delim) | |
| 276 { | |
| 277 lwasm_register_error(as, l, "Bad operand"); | |
| 278 return; | |
| 279 } | |
| 280 | |
| 281 l -> lstr = lw_strndup(*p, i); | |
| 282 (*p) += i + 1; | |
| 283 | |
| 284 l -> len = i; | |
| 285 } | |
| 286 | |
| 287 EMITFUNC(pseudo_emit_fcn) | |
| 288 { | |
| 289 int i; | |
| 290 | |
| 291 for (i = 0; i < l -> len; i++) | |
| 292 lwasm_emit(l, l -> lstr[i]); | |
| 293 lwasm_emit(l, 0); | |
| 294 } | |
| 295 | |
| 296 PARSEFUNC(pseudo_parse_rmb) | |
| 297 { | |
| 298 lw_expr_t expr; | |
| 299 | |
| 300 expr = lwasm_parse_expr(as, p); | |
| 301 if (!expr) | |
| 302 { | |
| 303 lwasm_register_error(as, l, "Bad expression"); | |
| 304 } | |
| 305 | |
| 306 lwasm_save_expr(l, 0, expr); | |
| 307 } | |
| 308 | |
| 309 RESOLVEFUNC(pseudo_resolve_rmb) | |
| 310 { | |
| 311 lw_expr_t expr; | |
| 312 | |
| 313 if (l -> len >= 0) | |
| 314 return; | |
| 315 | |
| 316 expr = lwasm_fetch_expr(l, 0); | |
| 317 | |
| 318 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 319 { | |
| 320 l -> len = lw_expr_intval(expr); | |
| 321 } | |
| 322 } | |
| 323 | |
| 324 EMITFUNC(pseudo_emit_rmb) | |
| 325 { | |
| 326 if (l -> len < 0) | |
| 327 lwasm_register_error(as, l, "Expression not constant"); | |
| 328 } | |
| 329 | |
| 330 PARSEFUNC(pseudo_parse_rmd) | |
| 331 { | |
| 332 lw_expr_t expr; | |
| 333 | |
| 334 expr = lwasm_parse_expr(as, p); | |
| 335 if (!expr) | |
| 336 { | |
| 337 lwasm_register_error(as, l, "Bad expression"); | |
| 338 } | |
| 339 | |
| 340 lwasm_save_expr(l, 0, expr); | |
| 341 } | |
| 342 | |
| 343 RESOLVEFUNC(pseudo_resolve_rmd) | |
| 344 { | |
| 345 lw_expr_t expr; | |
| 346 | |
| 347 if (l -> len >= 0) | |
| 348 return; | |
| 349 | |
| 350 expr = lwasm_fetch_expr(l, 0); | |
| 351 | |
| 352 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 353 { | |
| 354 l -> len = lw_expr_intval(expr) * 2; | |
| 355 } | |
| 356 } | |
| 357 | |
| 358 EMITFUNC(pseudo_emit_rmd) | |
| 359 { | |
| 360 if (l -> len < 0) | |
| 361 lwasm_register_error(as, l, "Expression not constant"); | |
| 362 } | |
| 363 | |
| 364 | |
| 365 PARSEFUNC(pseudo_parse_rmq) | |
| 366 { | |
| 367 lw_expr_t expr; | |
| 368 | |
| 369 expr = lwasm_parse_expr(as, p); | |
| 370 if (!expr) | |
| 371 { | |
| 372 lwasm_register_error(as, l, "Bad expression"); | |
| 373 } | |
| 374 | |
| 375 lwasm_save_expr(l, 0, expr); | |
| 376 } | |
| 377 | |
| 378 RESOLVEFUNC(pseudo_resolve_rmq) | |
| 379 { | |
| 380 lw_expr_t expr; | |
| 381 | |
| 382 if (l -> len >= 0) | |
| 383 return; | |
| 384 | |
| 385 expr = lwasm_fetch_expr(l, 0); | |
| 386 | |
| 387 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 388 { | |
| 389 l -> len = lw_expr_intval(expr) * 4; | |
| 390 } | |
| 391 } | |
| 392 | |
| 393 EMITFUNC(pseudo_emit_rmq) | |
| 394 { | |
| 395 if (l -> len < 0) | |
| 396 lwasm_register_error(as, l, "Expression not constant"); | |
| 397 } | |
| 398 | |
| 399 | |
| 400 PARSEFUNC(pseudo_parse_zmq) | |
| 401 { | |
| 402 lw_expr_t expr; | |
| 403 | |
| 404 expr = lwasm_parse_expr(as, p); | |
| 405 if (!expr) | |
| 406 { | |
| 407 lwasm_register_error(as, l, "Bad expression"); | |
| 408 } | |
| 409 | |
| 410 lwasm_save_expr(l, 0, expr); | |
| 411 } | |
| 412 | |
| 413 RESOLVEFUNC(pseudo_resolve_zmq) | |
| 414 { | |
| 415 lw_expr_t expr; | |
| 416 | |
| 417 if (l -> len >= 0) | |
| 418 return; | |
| 419 | |
| 420 expr = lwasm_fetch_expr(l, 0); | |
| 421 | |
| 422 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 423 { | |
| 424 l -> len = lw_expr_intval(expr) * 4; | |
| 425 } | |
| 426 } | |
| 427 | |
| 428 EMITFUNC(pseudo_emit_zmq) | |
| 429 { | |
| 430 int i; | |
| 431 | |
| 432 if (l -> len < 0) | |
| 433 { | |
| 434 lwasm_register_error(as, l, "Expression not constant"); | |
| 435 return; | |
| 436 } | |
| 437 | |
| 438 for (i = 0; i < l -> len; i++) | |
| 439 lwasm_emit(l, 0); | |
| 440 } | |
| 441 | |
| 442 | |
| 443 PARSEFUNC(pseudo_parse_zmd) | |
| 444 { | |
| 445 lw_expr_t expr; | |
| 446 | |
| 447 expr = lwasm_parse_expr(as, p); | |
| 448 if (!expr) | |
| 449 { | |
| 450 lwasm_register_error(as, l, "Bad expression"); | |
| 451 } | |
| 452 | |
| 453 lwasm_save_expr(l, 0, expr); | |
| 454 } | |
| 455 | |
| 456 RESOLVEFUNC(pseudo_resolve_zmd) | |
| 457 { | |
| 458 lw_expr_t expr; | |
| 459 | |
| 460 if (l -> len >= 0) | |
| 461 return; | |
| 462 | |
| 463 expr = lwasm_fetch_expr(l, 0); | |
| 464 | |
| 465 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 466 { | |
| 467 l -> len = lw_expr_intval(expr) * 2; | |
| 468 } | |
| 469 } | |
| 470 | |
| 471 EMITFUNC(pseudo_emit_zmd) | |
| 472 { | |
| 473 int i; | |
| 474 | |
| 475 if (l -> len < 0) | |
| 476 { | |
| 477 lwasm_register_error(as, l, "Expression not constant"); | |
| 478 return; | |
| 479 } | |
| 480 | |
| 481 for (i = 0; i < l -> len; i++) | |
| 482 lwasm_emit(l, 0); | |
| 483 } | |
| 484 | |
| 485 PARSEFUNC(pseudo_parse_zmb) | |
| 486 { | |
| 487 lw_expr_t expr; | |
| 488 | |
| 489 expr = lwasm_parse_expr(as, p); | |
| 490 if (!expr) | |
| 491 { | |
| 492 lwasm_register_error(as, l, "Bad expression"); | |
| 493 } | |
| 494 | |
| 495 lwasm_save_expr(l, 0, expr); | |
| 496 } | |
| 497 | |
| 498 RESOLVEFUNC(pseudo_resolve_zmb) | |
| 499 { | |
| 500 lw_expr_t expr; | |
| 501 | |
| 502 if (l -> len >= 0) | |
| 503 return; | |
| 504 | |
| 505 expr = lwasm_fetch_expr(l, 0); | |
| 506 | |
| 507 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 508 { | |
| 509 l -> len = lw_expr_intval(expr); | |
| 510 } | |
| 511 } | |
| 512 | |
| 513 EMITFUNC(pseudo_emit_zmb) | |
| 514 { | |
| 515 int i; | |
| 516 | |
| 517 if (l -> len < 0) | |
| 518 { | |
| 519 lwasm_register_error(as, l, "Expression not constant"); | |
| 520 return; | |
| 521 } | |
| 522 | |
| 523 for (i = 0; i < l -> len; i++) | |
| 524 lwasm_emit(l, 0); | |
| 525 } | |
| 350 | 526 |
| 527 PARSEFUNC(pseudo_parse_org) | |
| 528 { | |
| 529 lw_expr_t e; | |
| 530 | |
| 351 | 531 l -> len = 0; |
| 532 | |
| 350 | 533 e = lwasm_parse_expr(as, p); |
| 534 if (!e) | |
| 535 { | |
| 536 lwasm_register_error(as, l, "Bad operand"); | |
| 537 return; | |
| 538 } | |
| 539 | |
| 540 lw_expr_destroy(l -> addr); | |
| 541 l -> addr = e; | |
| 542 l -> len = 0; | |
| 543 } | |
| 544 | |
| 545 PARSEFUNC(pseudo_parse_equ) | |
| 546 { | |
| 547 lw_expr_t e; | |
| 548 | |
| 351 | 549 l -> len = 0; |
| 550 | |
| 350 | 551 if (!(l -> sym)) |
| 552 { | |
| 553 lwasm_register_error(as, l, "Missing symbol"); | |
| 554 return; | |
| 555 } | |
| 556 | |
| 557 e = lwasm_parse_expr(as, p); | |
| 558 if (!e) | |
| 559 { | |
| 560 lwasm_register_error(as, l, "Bad operand"); | |
| 561 return; | |
| 562 } | |
| 563 | |
| 564 register_symbol(as, l, l -> sym, e, symbol_flag_none); | |
| 565 l -> symset = 1; | |
| 566 } | |
| 351 | 567 |
| 568 PARSEFUNC(pseudo_parse_set) | |
| 569 { | |
| 570 lw_expr_t e; | |
| 571 | |
| 572 l -> len = 0; | |
| 573 | |
| 574 if (!(l -> sym)) | |
| 575 { | |
| 576 lwasm_register_error(as, l, "Missing symbol"); | |
| 577 return; | |
| 578 } | |
| 579 | |
| 580 e = lwasm_parse_expr(as, p); | |
| 581 if (!e) | |
| 582 { | |
| 583 lwasm_register_error(as, l, "Bad operand"); | |
| 584 return; | |
| 585 } | |
| 586 | |
| 587 register_symbol(as, l, l -> sym, e, symbol_flag_set); | |
| 588 l -> symset = 1; | |
| 589 } | |
| 590 | |
| 591 PARSEFUNC(pseudo_parse_setdp) | |
| 592 { | |
| 593 lw_expr_t e; | |
| 594 | |
| 595 l -> len = 0; | |
| 596 | |
| 597 if (as -> output_format == OUTPUT_OBJ) | |
| 598 { | |
| 599 lwasm_register_error(as, l, "SETDP not permitted for object target"); | |
| 600 return; | |
| 601 } | |
| 602 | |
| 603 e = lwasm_parse_expr(as, p); | |
| 604 if (!e) | |
| 605 { | |
| 606 lwasm_register_error(as, l, "Bad operand"); | |
| 607 return; | |
| 608 } | |
| 609 | |
| 610 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 611 { | |
| 612 lwasm_register_error(as, l, "SETDP must be constant on pass 1"); | |
| 613 return; | |
| 614 } | |
| 615 l -> dpval = lw_expr_intval(e) & 0xff; | |
| 616 } | |
| 617 | |
| 618 PARSEFUNC(pseudo_parse_ifp1) | |
| 619 { | |
| 620 l -> len = 0; | |
| 621 | |
| 622 if (as -> skipcond && !(as -> skipmacro)) | |
| 623 { | |
| 624 as -> skipcount++; | |
| 625 skip_operand(p); | |
| 626 return; | |
| 627 } | |
| 628 | |
| 629 lwasm_register_warning(as, l, "IFP1 if is not supported; ignoring"); | |
| 630 | |
| 631 } | |
| 632 | |
| 633 PARSEFUNC(pseudo_parse_ifp2) | |
| 634 { | |
| 635 l -> len = 0; | |
| 636 | |
| 637 if (as -> skipcond && !(as -> skipmacro)) | |
| 638 { | |
| 639 as -> skipcount++; | |
| 640 skip_operand(p); | |
| 641 return; | |
| 642 } | |
| 643 | |
| 644 lwasm_register_warning(as, l, "IFP2 if is not supported; ignoring"); | |
| 645 } | |
| 646 | |
| 647 PARSEFUNC(pseudo_parse_ifeq) | |
| 648 { | |
| 649 lw_expr_t e; | |
| 650 | |
| 651 l -> len = 0; | |
| 652 | |
| 653 if (as -> skipcond && !(as -> skipmacro)) | |
| 654 { | |
| 655 as -> skipcount++; | |
| 656 skip_operand(p); | |
| 657 return; | |
| 658 } | |
| 659 | |
| 660 e = lwasm_parse_expr(as, p); | |
| 661 if (!e) | |
| 662 { | |
| 663 lwasm_register_error(as, l, "Bad expression"); | |
| 664 return; | |
| 665 } | |
| 666 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 667 { | |
| 668 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 669 return; | |
| 670 } | |
| 671 if (lw_expr_intval(e) != 0) | |
| 672 { | |
| 673 as -> skipcond = 1; | |
| 674 as -> skipcount = 1; | |
| 675 } | |
| 676 } | |
| 677 | |
| 678 PARSEFUNC(pseudo_parse_ifne) | |
| 679 { | |
| 680 lw_expr_t e; | |
| 681 | |
| 682 l -> len = 0; | |
| 683 | |
| 684 if (as -> skipcond && !(as -> skipmacro)) | |
| 685 { | |
| 686 as -> skipcount++; | |
| 687 skip_operand(p); | |
| 688 return; | |
| 689 } | |
| 690 | |
| 691 e = lwasm_parse_expr(as, p); | |
| 692 if (!e) | |
| 693 { | |
| 694 lwasm_register_error(as, l, "Bad expression"); | |
| 695 return; | |
| 696 } | |
| 697 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 698 { | |
| 699 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 700 return; | |
| 701 } | |
| 702 if (lw_expr_intval(e) == 0) | |
| 703 { | |
| 704 as -> skipcond = 1; | |
| 705 as -> skipcount = 1; | |
| 706 } | |
| 707 } | |
| 708 | |
| 709 | |
| 710 PARSEFUNC(pseudo_parse_ifgt) | |
| 711 { | |
| 712 lw_expr_t e; | |
| 713 | |
| 714 l -> len = 0; | |
| 715 | |
| 716 if (as -> skipcond && !(as -> skipmacro)) | |
| 717 { | |
| 718 as -> skipcount++; | |
| 719 skip_operand(p); | |
| 720 return; | |
| 721 } | |
| 722 | |
| 723 e = lwasm_parse_expr(as, p); | |
| 724 if (!e) | |
| 725 { | |
| 726 lwasm_register_error(as, l, "Bad expression"); | |
| 727 return; | |
| 728 } | |
| 729 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 730 { | |
| 731 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 732 return; | |
| 733 } | |
| 734 if (lw_expr_intval(e) <= 0) | |
| 735 { | |
| 736 as -> skipcond = 1; | |
| 737 as -> skipcount = 1; | |
| 738 } | |
| 739 } | |
| 740 | |
| 741 PARSEFUNC(pseudo_parse_ifge) | |
| 742 { | |
| 743 lw_expr_t e; | |
| 744 | |
| 745 l -> len = 0; | |
| 746 | |
| 747 if (as -> skipcond && !(as -> skipmacro)) | |
| 748 { | |
| 749 as -> skipcount++; | |
| 750 skip_operand(p); | |
| 751 return; | |
| 752 } | |
| 753 | |
| 754 e = lwasm_parse_expr(as, p); | |
| 755 if (!e) | |
| 756 { | |
| 757 lwasm_register_error(as, l, "Bad expression"); | |
| 758 return; | |
| 759 } | |
| 760 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 761 { | |
| 762 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 763 return; | |
| 764 } | |
| 765 if (lw_expr_intval(e) < 0) | |
| 766 { | |
| 767 as -> skipcond = 1; | |
| 768 as -> skipcount = 1; | |
| 769 } | |
| 770 } | |
| 771 | |
| 772 PARSEFUNC(pseudo_parse_iflt) | |
| 773 { | |
| 774 lw_expr_t e; | |
| 775 | |
| 776 l -> len = 0; | |
| 777 | |
| 778 if (as -> skipcond && !(as -> skipmacro)) | |
| 779 { | |
| 780 as -> skipcount++; | |
| 781 skip_operand(p); | |
| 782 return; | |
| 783 } | |
| 784 | |
| 785 e = lwasm_parse_expr(as, p); | |
| 786 if (!e) | |
| 787 { | |
| 788 lwasm_register_error(as, l, "Bad expression"); | |
| 789 return; | |
| 790 } | |
| 791 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 792 { | |
| 793 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 794 return; | |
| 795 } | |
| 796 if (lw_expr_intval(e) >= 0) | |
| 797 { | |
| 798 as -> skipcond = 1; | |
| 799 as -> skipcount = 1; | |
| 800 } | |
| 801 } | |
| 802 | |
| 803 PARSEFUNC(pseudo_parse_ifle) | |
| 804 { | |
| 805 lw_expr_t e; | |
| 806 | |
| 807 l -> len = 0; | |
| 808 | |
| 809 if (as -> skipcond && !(as -> skipmacro)) | |
| 810 { | |
| 811 as -> skipcount++; | |
| 812 skip_operand(p); | |
| 813 return; | |
| 814 } | |
| 815 | |
| 816 e = lwasm_parse_expr(as, p); | |
| 817 if (!e) | |
| 818 { | |
| 819 lwasm_register_error(as, l, "Bad expression"); | |
| 820 return; | |
| 821 } | |
| 822 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 823 { | |
| 824 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 825 return; | |
| 826 } | |
| 827 if (lw_expr_intval(e) > 0) | |
| 828 { | |
| 829 as -> skipcond = 1; | |
| 830 as -> skipcount = 1; | |
| 831 } | |
| 832 } | |
| 833 | |
| 834 PARSEFUNC(pseudo_parse_endc) | |
| 835 { | |
| 836 l -> len = 0; | |
| 837 if (as -> skipcond && !(as -> skipmacro)) | |
| 838 { | |
| 839 as -> skipcount--; | |
| 840 if (as -> skipcount < 0) | |
| 841 as -> skipcond = 0; | |
| 842 } | |
| 843 } | |
| 844 | |
| 845 PARSEFUNC(pseudo_parse_else) | |
| 846 { | |
| 847 l -> len = 0; | |
| 848 | |
| 849 if (as -> skipmacro) | |
| 850 return; | |
| 851 | |
| 852 if (as -> skipcond) | |
| 853 { | |
| 854 if (as -> skipcount == 1) | |
| 855 { | |
| 856 as -> skipcount = 0; | |
| 857 as -> skipcond = 0; | |
| 858 } | |
| 859 return; | |
| 860 } | |
| 861 as -> skipcond = 1; | |
| 862 as -> skipcount = 1; | |
| 863 } | |
| 864 | |
| 865 PARSEFUNC(pseudo_parse_ifdef) | |
| 866 { | |
| 867 char *sym; | |
| 868 int i; | |
| 869 struct symtabe *s; | |
| 870 | |
| 871 l -> len = 0; | |
| 872 | |
| 873 if (as -> skipcond && !(as -> skipmacro)) | |
| 874 { | |
| 875 as -> skipcount++; | |
| 876 skip_operand(p); | |
| 877 return; | |
| 878 } | |
| 879 | |
| 880 for (i = 0; (*p)[i] && !isspace((*p)[i]); i++) | |
| 881 /* do nothing */ ; | |
| 882 | |
| 883 sym = lw_strndup(*p, i); | |
| 884 | |
|
363
d96c30e60ddf
Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents:
356
diff
changeset
|
885 s = lookup_symbol(as, l, sym); |
| 351 | 886 |
| 887 lw_free(sym); | |
| 888 | |
| 889 if (!s) | |
| 890 { | |
| 891 as -> skipcond = 1; | |
| 892 as -> skipcount = 1; | |
| 893 } | |
| 894 } | |
| 895 | |
| 896 PARSEFUNC(pseudo_parse_ifndef) | |
| 897 { | |
| 898 char *sym; | |
| 899 int i; | |
| 900 struct symtabe *s; | |
| 901 | |
| 902 l -> len = 0; | |
| 903 | |
| 904 if (as -> skipcond && !(as -> skipmacro)) | |
| 905 { | |
| 906 as -> skipcount++; | |
| 907 skip_operand(p); | |
| 908 return; | |
| 909 } | |
| 910 | |
| 911 for (i = 0; (*p)[i] && !isspace((*p)[i]); i++) | |
| 912 /* do nothing */ ; | |
| 913 | |
| 914 sym = lw_strndup(*p, i); | |
| 915 | |
|
363
d96c30e60ddf
Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents:
356
diff
changeset
|
916 s = lookup_symbol(as, l, sym); |
| 351 | 917 |
| 918 lw_free(sym); | |
| 919 | |
| 920 if (s) | |
| 921 { | |
| 922 as -> skipcond = 1; | |
| 923 as -> skipcount = 1; | |
| 924 } | |
| 925 } | |
| 926 | |
| 354 | 927 PARSEFUNC(pseudo_parse_error) |
| 928 { | |
| 929 lwasm_register_error(as, l, "User error: %s", *p); | |
| 930 skip_operand(p); | |
| 931 } | |
| 356 | 932 |
| 933 PARSEFUNC(pseudo_parse_includebin) | |
| 934 { | |
| 935 char *fn, *p2; | |
| 936 int delim = 0; | |
| 937 FILE *fp; | |
| 938 long flen; | |
| 939 | |
| 940 if (!**p) | |
| 941 { | |
| 942 lwasm_register_error(as, l, "Missing filename"); | |
| 943 return; | |
| 944 } | |
| 945 | |
| 946 if (**p == '"' || **p == '\'') | |
| 947 { | |
| 948 delim = **p; | |
| 949 (*p)++; | |
| 950 | |
| 951 for (p2 = *p; *p2 && *p2 != delim; p2++) | |
| 952 /* do nothing */ ; | |
| 953 } | |
| 954 else | |
| 955 { | |
| 956 for (p2 = *p; *p2 && !isspace(*p2); p2++) | |
| 957 /* do nothing */ ; | |
| 958 } | |
| 959 fn = lw_strndup(*p, p2 - *p); | |
| 960 | |
| 961 if (delim && **p) | |
| 962 (*p)++; | |
| 963 | |
| 964 fp = input_open_standalone(as, fn); | |
| 965 if (!fp) | |
| 966 { | |
| 967 lwasm_register_error(as, l, "Cannot open file"); | |
| 968 lw_free(fn); | |
| 969 return; | |
| 970 } | |
| 971 | |
| 972 l -> lstr = fn; | |
| 973 | |
| 974 fseek(fp, 0, SEEK_END); | |
| 975 flen = ftell(fp); | |
| 976 fclose(fp); | |
| 977 | |
| 978 l -> len = flen; | |
| 979 } | |
| 980 | |
| 981 EMITFUNC(pseudo_emit_includebin) | |
| 982 { | |
| 983 FILE *fp; | |
| 984 int c; | |
| 985 | |
| 986 fp = input_open_standalone(as, l -> lstr); | |
| 987 if (!fp) | |
| 988 { | |
| 989 lwasm_register_error(as, l, "Cannot open file (emit)!"); | |
| 990 return; | |
| 991 } | |
| 992 | |
| 993 for (;;) | |
| 994 { | |
| 995 c = fgetc(fp); | |
| 996 if (c == EOF) | |
| 997 { | |
| 998 fclose(fp); | |
| 999 return; | |
| 1000 } | |
| 1001 lwasm_emit(l, c); | |
| 1002 } | |
| 1003 } | |
| 1004 | |
| 1005 PARSEFUNC(pseudo_parse_include) | |
| 1006 { | |
| 1007 char *fn, *p2; | |
| 1008 int delim = 0; | |
| 1009 | |
| 1010 if (!**p) | |
| 1011 { | |
| 1012 lwasm_register_error(as, l, "Missing filename"); | |
| 1013 return; | |
| 1014 } | |
| 1015 | |
| 1016 if (**p == '"' || **p == '\'') | |
| 1017 { | |
| 1018 delim = **p; | |
| 1019 (*p)++; | |
| 1020 | |
| 1021 for (p2 = *p; *p2 && *p2 != delim; p2++) | |
| 1022 /* do nothing */ ; | |
| 1023 } | |
| 1024 else | |
| 1025 { | |
| 1026 for (p2 = *p; *p2 && !isspace(*p2); p2++) | |
| 1027 /* do nothing */ ; | |
| 1028 } | |
| 1029 fn = lw_strndup(*p, p2 - *p); | |
| 1030 | |
| 1031 if (delim && **p) | |
| 1032 (*p)++; | |
| 1033 | |
| 1034 input_open(as, fn); | |
| 1035 | |
| 1036 l -> len = 0; | |
| 1037 } | |
| 1038 | |
| 1039 PARSEFUNC(pseudo_parse_align) | |
| 1040 { | |
| 1041 lw_expr_t e; | |
| 1042 if (!**p) | |
| 1043 { | |
| 1044 lwasm_register_error(as, l, "Bad operand"); | |
| 1045 return; | |
| 1046 } | |
| 1047 | |
| 1048 e = lwasm_parse_expr(as, p); | |
| 382 | 1049 |
| 356 | 1050 if (!e) |
| 1051 { | |
| 1052 lwasm_register_error(as, l, "Bad operand"); | |
| 1053 return; | |
| 1054 } | |
| 1055 | |
| 1056 lwasm_save_expr(l, 0, e); | |
| 1057 | |
| 1058 if (**p == ',') | |
| 1059 { | |
| 1060 e = lwasm_parse_expr(as, p); | |
| 1061 } | |
| 1062 else | |
| 1063 { | |
| 1064 e = lw_expr_build(lw_expr_type_int, 0); | |
| 1065 } | |
| 1066 if (!e) | |
| 1067 { | |
| 1068 lwasm_register_error(as, l, "Bad padding"); | |
| 1069 return; | |
| 1070 } | |
| 1071 | |
| 1072 lwasm_save_expr(l, 1, e); | |
| 1073 } | |
| 1074 | |
| 1075 RESOLVEFUNC(pseudo_resolve_align) | |
| 1076 { | |
| 1077 lw_expr_t e; | |
| 1078 int align; | |
| 1079 | |
| 1080 e = lwasm_fetch_expr(l, 0); | |
| 1081 | |
| 1082 if (lw_expr_istype(e, lw_expr_type_int)) | |
| 1083 { | |
| 1084 align = lw_expr_intval(e); | |
| 1085 if (align < 1) | |
| 1086 { | |
| 1087 lwasm_register_error(as, l, "Invalid alignment"); | |
| 1088 return; | |
| 1089 } | |
| 1090 } | |
| 1091 | |
| 1092 if (lw_expr_istype(l -> addr, lw_expr_type_int)) | |
| 1093 { | |
| 1094 int a; | |
| 1095 a = lw_expr_intval(l -> addr); | |
| 1096 if (a % align == 0) | |
| 1097 { | |
| 1098 l -> len = 0; | |
| 1099 return; | |
| 1100 } | |
| 1101 l -> len = align - (a % align); | |
| 1102 return; | |
| 1103 } | |
| 1104 } | |
| 1105 | |
| 1106 EMITFUNC(pseudo_emit_align) | |
| 1107 { | |
| 1108 lw_expr_t e; | |
| 1109 int i; | |
| 1110 | |
| 1111 e = lwasm_fetch_expr(l, 1); | |
| 1112 for (i = 0; i < l -> len; i++) | |
| 1113 { | |
| 1114 lwasm_emitexpr(l, e, 1); | |
| 1115 } | |
| 1116 } |