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annotate lwasm/pseudo.c @ 381:1624a36f12a3
Properly support 32 bit relocations
| author | lost@starbug |
|---|---|
| date | Mon, 26 Apr 2010 19:56:10 -0600 |
| parents | 6b33faa21a0a |
| children | eacdae8a1575 |
| 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 } | |
| 91 lwasm_save_expr(l, i, e); | |
| 92 i++; | |
| 93 } | |
| 94 | |
| 95 l -> len = i; | |
| 96 } | |
| 97 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
98 EMITFUNC(pseudo_emit_fcb) |
| 347 | 99 { |
| 100 int i; | |
| 101 lw_expr_t e; | |
| 102 int v; | |
| 103 | |
| 104 for (i = 0; i < l -> len; i++) | |
| 105 { | |
| 106 e = lwasm_fetch_expr(l, i); | |
| 107 lwasm_emitexpr(l, e, 1); | |
| 108 } | |
| 109 } | |
| 110 | |
| 111 PARSEFUNC(pseudo_parse_fdb) | |
| 112 { | |
| 113 int i = 0; | |
| 114 lw_expr_t e; | |
| 115 | |
| 116 for (;;) | |
| 117 { | |
| 118 e = lwasm_parse_expr(as, p); | |
| 119 if (!e) | |
| 120 { | |
| 121 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 122 break; | |
| 123 } | |
| 124 lwasm_save_expr(l, i, e); | |
| 125 i++; | |
| 126 } | |
| 127 | |
| 128 l -> len = i * 2; | |
| 129 } | |
| 130 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
131 EMITFUNC(pseudo_emit_fdb) |
| 347 | 132 { |
| 133 int i; | |
| 134 lw_expr_t e; | |
| 135 int v; | |
| 136 | |
| 137 for (i = 0; i < (l -> len)/2; i++) | |
| 138 { | |
| 139 e = lwasm_fetch_expr(l, i); | |
| 140 lwasm_emitexpr(l, e, 2); | |
| 141 } | |
| 142 } | |
| 143 | |
| 144 PARSEFUNC(pseudo_parse_fqb) | |
| 145 { | |
| 146 int i = 0; | |
| 147 lw_expr_t e; | |
| 148 | |
| 149 for (;;) | |
| 150 { | |
| 151 e = lwasm_parse_expr(as, p); | |
| 152 if (!e) | |
| 153 { | |
| 154 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 155 break; | |
| 156 } | |
| 157 lwasm_save_expr(l, i, e); | |
| 158 i++; | |
| 159 } | |
| 160 | |
| 161 l -> len = i * 4; | |
| 162 } | |
| 163 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
164 EMITFUNC(pseudo_emit_fqb) |
| 347 | 165 { |
| 166 int i; | |
| 167 lw_expr_t e; | |
| 168 int v; | |
| 169 | |
| 170 for (i = 0; i < (l -> len)/4; i++) | |
| 171 { | |
| 172 e = lwasm_fetch_expr(l, i); | |
| 173 lwasm_emitexpr(l, e, 4); | |
| 174 } | |
| 175 } | |
| 349 | 176 |
| 177 PARSEFUNC(pseudo_parse_fcc) | |
| 178 { | |
| 179 char delim; | |
| 180 int i; | |
| 181 | |
| 182 if (!**p) | |
| 183 { | |
| 184 lwasm_register_error(as, l, "Bad operand"); | |
| 185 return; | |
| 186 } | |
| 187 | |
| 188 delim = **p; | |
| 189 (*p)++; | |
| 190 | |
| 191 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 192 /* do nothing */ ; | |
| 193 | |
| 194 if ((*p)[i] != delim) | |
| 195 { | |
| 196 lwasm_register_error(as, l, "Bad operand"); | |
| 197 return; | |
| 198 } | |
| 199 | |
| 200 l -> lstr = lw_strndup(*p, i); | |
| 201 (*p) += i + 1; | |
| 202 | |
| 203 l -> len = i; | |
| 204 } | |
| 205 | |
| 206 EMITFUNC(pseudo_emit_fcc) | |
| 207 { | |
| 208 int i; | |
| 209 | |
| 210 for (i = 0; i < l -> len; i++) | |
| 211 lwasm_emit(l, l -> lstr[i]); | |
| 212 } | |
| 213 | |
| 214 PARSEFUNC(pseudo_parse_fcs) | |
| 215 { | |
| 216 char delim; | |
| 217 int i; | |
| 218 | |
| 219 if (!**p) | |
| 220 { | |
| 221 lwasm_register_error(as, l, "Bad operand"); | |
| 222 return; | |
| 223 } | |
| 224 | |
| 225 delim = **p; | |
| 226 (*p)++; | |
| 227 | |
| 228 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 229 /* do nothing */ ; | |
| 230 | |
| 231 if ((*p)[i] != delim) | |
| 232 { | |
| 233 lwasm_register_error(as, l, "Bad operand"); | |
| 234 return; | |
| 235 } | |
| 236 | |
| 237 l -> lstr = lw_strndup(*p, i); | |
| 238 (*p) += i + 1; | |
| 239 | |
| 240 l -> len = i; | |
| 241 } | |
| 242 | |
| 243 EMITFUNC(pseudo_emit_fcs) | |
| 244 { | |
| 245 int i; | |
| 246 | |
| 247 for (i = 0; i < l -> len - 1; i++) | |
| 248 lwasm_emit(l, l -> lstr[i]); | |
| 249 lwasm_emit(l, l -> lstr[i] | 0x80); | |
| 250 } | |
| 251 | |
| 252 PARSEFUNC(pseudo_parse_fcn) | |
| 253 { | |
| 254 char delim; | |
| 255 int i; | |
| 256 | |
| 257 if (!**p) | |
| 258 { | |
| 259 lwasm_register_error(as, l, "Bad operand"); | |
| 260 return; | |
| 261 } | |
| 262 | |
| 263 delim = **p; | |
| 264 (*p)++; | |
| 265 | |
| 266 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 267 /* do nothing */ ; | |
| 268 | |
| 269 if ((*p)[i] != delim) | |
| 270 { | |
| 271 lwasm_register_error(as, l, "Bad operand"); | |
| 272 return; | |
| 273 } | |
| 274 | |
| 275 l -> lstr = lw_strndup(*p, i); | |
| 276 (*p) += i + 1; | |
| 277 | |
| 278 l -> len = i; | |
| 279 } | |
| 280 | |
| 281 EMITFUNC(pseudo_emit_fcn) | |
| 282 { | |
| 283 int i; | |
| 284 | |
| 285 for (i = 0; i < l -> len; i++) | |
| 286 lwasm_emit(l, l -> lstr[i]); | |
| 287 lwasm_emit(l, 0); | |
| 288 } | |
| 289 | |
| 290 PARSEFUNC(pseudo_parse_rmb) | |
| 291 { | |
| 292 lw_expr_t expr; | |
| 293 | |
| 294 expr = lwasm_parse_expr(as, p); | |
| 295 if (!expr) | |
| 296 { | |
| 297 lwasm_register_error(as, l, "Bad expression"); | |
| 298 } | |
| 299 | |
| 300 lwasm_save_expr(l, 0, expr); | |
| 301 } | |
| 302 | |
| 303 RESOLVEFUNC(pseudo_resolve_rmb) | |
| 304 { | |
| 305 lw_expr_t expr; | |
| 306 | |
| 307 if (l -> len >= 0) | |
| 308 return; | |
| 309 | |
| 310 expr = lwasm_fetch_expr(l, 0); | |
| 311 | |
| 312 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 313 { | |
| 314 l -> len = lw_expr_intval(expr); | |
| 315 } | |
| 316 } | |
| 317 | |
| 318 EMITFUNC(pseudo_emit_rmb) | |
| 319 { | |
| 320 if (l -> len < 0) | |
| 321 lwasm_register_error(as, l, "Expression not constant"); | |
| 322 } | |
| 323 | |
| 324 PARSEFUNC(pseudo_parse_rmd) | |
| 325 { | |
| 326 lw_expr_t expr; | |
| 327 | |
| 328 expr = lwasm_parse_expr(as, p); | |
| 329 if (!expr) | |
| 330 { | |
| 331 lwasm_register_error(as, l, "Bad expression"); | |
| 332 } | |
| 333 | |
| 334 lwasm_save_expr(l, 0, expr); | |
| 335 } | |
| 336 | |
| 337 RESOLVEFUNC(pseudo_resolve_rmd) | |
| 338 { | |
| 339 lw_expr_t expr; | |
| 340 | |
| 341 if (l -> len >= 0) | |
| 342 return; | |
| 343 | |
| 344 expr = lwasm_fetch_expr(l, 0); | |
| 345 | |
| 346 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 347 { | |
| 348 l -> len = lw_expr_intval(expr) * 2; | |
| 349 } | |
| 350 } | |
| 351 | |
| 352 EMITFUNC(pseudo_emit_rmd) | |
| 353 { | |
| 354 if (l -> len < 0) | |
| 355 lwasm_register_error(as, l, "Expression not constant"); | |
| 356 } | |
| 357 | |
| 358 | |
| 359 PARSEFUNC(pseudo_parse_rmq) | |
| 360 { | |
| 361 lw_expr_t expr; | |
| 362 | |
| 363 expr = lwasm_parse_expr(as, p); | |
| 364 if (!expr) | |
| 365 { | |
| 366 lwasm_register_error(as, l, "Bad expression"); | |
| 367 } | |
| 368 | |
| 369 lwasm_save_expr(l, 0, expr); | |
| 370 } | |
| 371 | |
| 372 RESOLVEFUNC(pseudo_resolve_rmq) | |
| 373 { | |
| 374 lw_expr_t expr; | |
| 375 | |
| 376 if (l -> len >= 0) | |
| 377 return; | |
| 378 | |
| 379 expr = lwasm_fetch_expr(l, 0); | |
| 380 | |
| 381 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 382 { | |
| 383 l -> len = lw_expr_intval(expr) * 4; | |
| 384 } | |
| 385 } | |
| 386 | |
| 387 EMITFUNC(pseudo_emit_rmq) | |
| 388 { | |
| 389 if (l -> len < 0) | |
| 390 lwasm_register_error(as, l, "Expression not constant"); | |
| 391 } | |
| 392 | |
| 393 | |
| 394 PARSEFUNC(pseudo_parse_zmq) | |
| 395 { | |
| 396 lw_expr_t expr; | |
| 397 | |
| 398 expr = lwasm_parse_expr(as, p); | |
| 399 if (!expr) | |
| 400 { | |
| 401 lwasm_register_error(as, l, "Bad expression"); | |
| 402 } | |
| 403 | |
| 404 lwasm_save_expr(l, 0, expr); | |
| 405 } | |
| 406 | |
| 407 RESOLVEFUNC(pseudo_resolve_zmq) | |
| 408 { | |
| 409 lw_expr_t expr; | |
| 410 | |
| 411 if (l -> len >= 0) | |
| 412 return; | |
| 413 | |
| 414 expr = lwasm_fetch_expr(l, 0); | |
| 415 | |
| 416 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 417 { | |
| 418 l -> len = lw_expr_intval(expr) * 4; | |
| 419 } | |
| 420 } | |
| 421 | |
| 422 EMITFUNC(pseudo_emit_zmq) | |
| 423 { | |
| 424 int i; | |
| 425 | |
| 426 if (l -> len < 0) | |
| 427 { | |
| 428 lwasm_register_error(as, l, "Expression not constant"); | |
| 429 return; | |
| 430 } | |
| 431 | |
| 432 for (i = 0; i < l -> len; i++) | |
| 433 lwasm_emit(l, 0); | |
| 434 } | |
| 435 | |
| 436 | |
| 437 PARSEFUNC(pseudo_parse_zmd) | |
| 438 { | |
| 439 lw_expr_t expr; | |
| 440 | |
| 441 expr = lwasm_parse_expr(as, p); | |
| 442 if (!expr) | |
| 443 { | |
| 444 lwasm_register_error(as, l, "Bad expression"); | |
| 445 } | |
| 446 | |
| 447 lwasm_save_expr(l, 0, expr); | |
| 448 } | |
| 449 | |
| 450 RESOLVEFUNC(pseudo_resolve_zmd) | |
| 451 { | |
| 452 lw_expr_t expr; | |
| 453 | |
| 454 if (l -> len >= 0) | |
| 455 return; | |
| 456 | |
| 457 expr = lwasm_fetch_expr(l, 0); | |
| 458 | |
| 459 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 460 { | |
| 461 l -> len = lw_expr_intval(expr) * 2; | |
| 462 } | |
| 463 } | |
| 464 | |
| 465 EMITFUNC(pseudo_emit_zmd) | |
| 466 { | |
| 467 int i; | |
| 468 | |
| 469 if (l -> len < 0) | |
| 470 { | |
| 471 lwasm_register_error(as, l, "Expression not constant"); | |
| 472 return; | |
| 473 } | |
| 474 | |
| 475 for (i = 0; i < l -> len; i++) | |
| 476 lwasm_emit(l, 0); | |
| 477 } | |
| 478 | |
| 479 PARSEFUNC(pseudo_parse_zmb) | |
| 480 { | |
| 481 lw_expr_t expr; | |
| 482 | |
| 483 expr = lwasm_parse_expr(as, p); | |
| 484 if (!expr) | |
| 485 { | |
| 486 lwasm_register_error(as, l, "Bad expression"); | |
| 487 } | |
| 488 | |
| 489 lwasm_save_expr(l, 0, expr); | |
| 490 } | |
| 491 | |
| 492 RESOLVEFUNC(pseudo_resolve_zmb) | |
| 493 { | |
| 494 lw_expr_t expr; | |
| 495 | |
| 496 if (l -> len >= 0) | |
| 497 return; | |
| 498 | |
| 499 expr = lwasm_fetch_expr(l, 0); | |
| 500 | |
| 501 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 502 { | |
| 503 l -> len = lw_expr_intval(expr); | |
| 504 } | |
| 505 } | |
| 506 | |
| 507 EMITFUNC(pseudo_emit_zmb) | |
| 508 { | |
| 509 int i; | |
| 510 | |
| 511 if (l -> len < 0) | |
| 512 { | |
| 513 lwasm_register_error(as, l, "Expression not constant"); | |
| 514 return; | |
| 515 } | |
| 516 | |
| 517 for (i = 0; i < l -> len; i++) | |
| 518 lwasm_emit(l, 0); | |
| 519 } | |
| 350 | 520 |
| 521 PARSEFUNC(pseudo_parse_org) | |
| 522 { | |
| 523 lw_expr_t e; | |
| 524 | |
| 351 | 525 l -> len = 0; |
| 526 | |
| 350 | 527 e = lwasm_parse_expr(as, p); |
| 528 if (!e) | |
| 529 { | |
| 530 lwasm_register_error(as, l, "Bad operand"); | |
| 531 return; | |
| 532 } | |
| 533 | |
| 534 lw_expr_destroy(l -> addr); | |
| 535 l -> addr = e; | |
| 536 l -> len = 0; | |
| 537 } | |
| 538 | |
| 539 PARSEFUNC(pseudo_parse_equ) | |
| 540 { | |
| 541 lw_expr_t e; | |
| 542 | |
| 351 | 543 l -> len = 0; |
| 544 | |
| 350 | 545 if (!(l -> sym)) |
| 546 { | |
| 547 lwasm_register_error(as, l, "Missing symbol"); | |
| 548 return; | |
| 549 } | |
| 550 | |
| 551 e = lwasm_parse_expr(as, p); | |
| 552 if (!e) | |
| 553 { | |
| 554 lwasm_register_error(as, l, "Bad operand"); | |
| 555 return; | |
| 556 } | |
| 557 | |
| 558 register_symbol(as, l, l -> sym, e, symbol_flag_none); | |
| 559 l -> symset = 1; | |
| 560 } | |
| 351 | 561 |
| 562 PARSEFUNC(pseudo_parse_set) | |
| 563 { | |
| 564 lw_expr_t e; | |
| 565 | |
| 566 l -> len = 0; | |
| 567 | |
| 568 if (!(l -> sym)) | |
| 569 { | |
| 570 lwasm_register_error(as, l, "Missing symbol"); | |
| 571 return; | |
| 572 } | |
| 573 | |
| 574 e = lwasm_parse_expr(as, p); | |
| 575 if (!e) | |
| 576 { | |
| 577 lwasm_register_error(as, l, "Bad operand"); | |
| 578 return; | |
| 579 } | |
| 580 | |
| 581 register_symbol(as, l, l -> sym, e, symbol_flag_set); | |
| 582 l -> symset = 1; | |
| 583 } | |
| 584 | |
| 585 PARSEFUNC(pseudo_parse_setdp) | |
| 586 { | |
| 587 lw_expr_t e; | |
| 588 | |
| 589 l -> len = 0; | |
| 590 | |
| 591 if (as -> output_format == OUTPUT_OBJ) | |
| 592 { | |
| 593 lwasm_register_error(as, l, "SETDP not permitted for object target"); | |
| 594 return; | |
| 595 } | |
| 596 | |
| 597 e = lwasm_parse_expr(as, p); | |
| 598 if (!e) | |
| 599 { | |
| 600 lwasm_register_error(as, l, "Bad operand"); | |
| 601 return; | |
| 602 } | |
| 603 | |
| 604 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 605 { | |
| 606 lwasm_register_error(as, l, "SETDP must be constant on pass 1"); | |
| 607 return; | |
| 608 } | |
| 609 l -> dpval = lw_expr_intval(e) & 0xff; | |
| 610 } | |
| 611 | |
| 612 PARSEFUNC(pseudo_parse_ifp1) | |
| 613 { | |
| 614 l -> len = 0; | |
| 615 | |
| 616 if (as -> skipcond && !(as -> skipmacro)) | |
| 617 { | |
| 618 as -> skipcount++; | |
| 619 skip_operand(p); | |
| 620 return; | |
| 621 } | |
| 622 | |
| 623 lwasm_register_warning(as, l, "IFP1 if is not supported; ignoring"); | |
| 624 | |
| 625 } | |
| 626 | |
| 627 PARSEFUNC(pseudo_parse_ifp2) | |
| 628 { | |
| 629 l -> len = 0; | |
| 630 | |
| 631 if (as -> skipcond && !(as -> skipmacro)) | |
| 632 { | |
| 633 as -> skipcount++; | |
| 634 skip_operand(p); | |
| 635 return; | |
| 636 } | |
| 637 | |
| 638 lwasm_register_warning(as, l, "IFP2 if is not supported; ignoring"); | |
| 639 } | |
| 640 | |
| 641 PARSEFUNC(pseudo_parse_ifeq) | |
| 642 { | |
| 643 lw_expr_t e; | |
| 644 | |
| 645 l -> len = 0; | |
| 646 | |
| 647 if (as -> skipcond && !(as -> skipmacro)) | |
| 648 { | |
| 649 as -> skipcount++; | |
| 650 skip_operand(p); | |
| 651 return; | |
| 652 } | |
| 653 | |
| 654 e = lwasm_parse_expr(as, p); | |
| 655 if (!e) | |
| 656 { | |
| 657 lwasm_register_error(as, l, "Bad expression"); | |
| 658 return; | |
| 659 } | |
| 660 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 661 { | |
| 662 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 663 return; | |
| 664 } | |
| 665 if (lw_expr_intval(e) != 0) | |
| 666 { | |
| 667 as -> skipcond = 1; | |
| 668 as -> skipcount = 1; | |
| 669 } | |
| 670 } | |
| 671 | |
| 672 PARSEFUNC(pseudo_parse_ifne) | |
| 673 { | |
| 674 lw_expr_t e; | |
| 675 | |
| 676 l -> len = 0; | |
| 677 | |
| 678 if (as -> skipcond && !(as -> skipmacro)) | |
| 679 { | |
| 680 as -> skipcount++; | |
| 681 skip_operand(p); | |
| 682 return; | |
| 683 } | |
| 684 | |
| 685 e = lwasm_parse_expr(as, p); | |
| 686 if (!e) | |
| 687 { | |
| 688 lwasm_register_error(as, l, "Bad expression"); | |
| 689 return; | |
| 690 } | |
| 691 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 692 { | |
| 693 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 694 return; | |
| 695 } | |
| 696 if (lw_expr_intval(e) == 0) | |
| 697 { | |
| 698 as -> skipcond = 1; | |
| 699 as -> skipcount = 1; | |
| 700 } | |
| 701 } | |
| 702 | |
| 703 | |
| 704 PARSEFUNC(pseudo_parse_ifgt) | |
| 705 { | |
| 706 lw_expr_t e; | |
| 707 | |
| 708 l -> len = 0; | |
| 709 | |
| 710 if (as -> skipcond && !(as -> skipmacro)) | |
| 711 { | |
| 712 as -> skipcount++; | |
| 713 skip_operand(p); | |
| 714 return; | |
| 715 } | |
| 716 | |
| 717 e = lwasm_parse_expr(as, p); | |
| 718 if (!e) | |
| 719 { | |
| 720 lwasm_register_error(as, l, "Bad expression"); | |
| 721 return; | |
| 722 } | |
| 723 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 724 { | |
| 725 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 726 return; | |
| 727 } | |
| 728 if (lw_expr_intval(e) <= 0) | |
| 729 { | |
| 730 as -> skipcond = 1; | |
| 731 as -> skipcount = 1; | |
| 732 } | |
| 733 } | |
| 734 | |
| 735 PARSEFUNC(pseudo_parse_ifge) | |
| 736 { | |
| 737 lw_expr_t e; | |
| 738 | |
| 739 l -> len = 0; | |
| 740 | |
| 741 if (as -> skipcond && !(as -> skipmacro)) | |
| 742 { | |
| 743 as -> skipcount++; | |
| 744 skip_operand(p); | |
| 745 return; | |
| 746 } | |
| 747 | |
| 748 e = lwasm_parse_expr(as, p); | |
| 749 if (!e) | |
| 750 { | |
| 751 lwasm_register_error(as, l, "Bad expression"); | |
| 752 return; | |
| 753 } | |
| 754 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 755 { | |
| 756 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 757 return; | |
| 758 } | |
| 759 if (lw_expr_intval(e) < 0) | |
| 760 { | |
| 761 as -> skipcond = 1; | |
| 762 as -> skipcount = 1; | |
| 763 } | |
| 764 } | |
| 765 | |
| 766 PARSEFUNC(pseudo_parse_iflt) | |
| 767 { | |
| 768 lw_expr_t e; | |
| 769 | |
| 770 l -> len = 0; | |
| 771 | |
| 772 if (as -> skipcond && !(as -> skipmacro)) | |
| 773 { | |
| 774 as -> skipcount++; | |
| 775 skip_operand(p); | |
| 776 return; | |
| 777 } | |
| 778 | |
| 779 e = lwasm_parse_expr(as, p); | |
| 780 if (!e) | |
| 781 { | |
| 782 lwasm_register_error(as, l, "Bad expression"); | |
| 783 return; | |
| 784 } | |
| 785 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 786 { | |
| 787 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 788 return; | |
| 789 } | |
| 790 if (lw_expr_intval(e) >= 0) | |
| 791 { | |
| 792 as -> skipcond = 1; | |
| 793 as -> skipcount = 1; | |
| 794 } | |
| 795 } | |
| 796 | |
| 797 PARSEFUNC(pseudo_parse_ifle) | |
| 798 { | |
| 799 lw_expr_t e; | |
| 800 | |
| 801 l -> len = 0; | |
| 802 | |
| 803 if (as -> skipcond && !(as -> skipmacro)) | |
| 804 { | |
| 805 as -> skipcount++; | |
| 806 skip_operand(p); | |
| 807 return; | |
| 808 } | |
| 809 | |
| 810 e = lwasm_parse_expr(as, p); | |
| 811 if (!e) | |
| 812 { | |
| 813 lwasm_register_error(as, l, "Bad expression"); | |
| 814 return; | |
| 815 } | |
| 816 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 817 { | |
| 818 lwasm_register_error(as, l, "Conditions must be constant on pass 1"); | |
| 819 return; | |
| 820 } | |
| 821 if (lw_expr_intval(e) > 0) | |
| 822 { | |
| 823 as -> skipcond = 1; | |
| 824 as -> skipcount = 1; | |
| 825 } | |
| 826 } | |
| 827 | |
| 828 PARSEFUNC(pseudo_parse_endc) | |
| 829 { | |
| 830 l -> len = 0; | |
| 831 if (as -> skipcond && !(as -> skipmacro)) | |
| 832 { | |
| 833 as -> skipcount--; | |
| 834 if (as -> skipcount < 0) | |
| 835 as -> skipcond = 0; | |
| 836 } | |
| 837 } | |
| 838 | |
| 839 PARSEFUNC(pseudo_parse_else) | |
| 840 { | |
| 841 l -> len = 0; | |
| 842 | |
| 843 if (as -> skipmacro) | |
| 844 return; | |
| 845 | |
| 846 if (as -> skipcond) | |
| 847 { | |
| 848 if (as -> skipcount == 1) | |
| 849 { | |
| 850 as -> skipcount = 0; | |
| 851 as -> skipcond = 0; | |
| 852 } | |
| 853 return; | |
| 854 } | |
| 855 as -> skipcond = 1; | |
| 856 as -> skipcount = 1; | |
| 857 } | |
| 858 | |
| 859 PARSEFUNC(pseudo_parse_ifdef) | |
| 860 { | |
| 861 char *sym; | |
| 862 int i; | |
| 863 struct symtabe *s; | |
| 864 | |
| 865 l -> len = 0; | |
| 866 | |
| 867 if (as -> skipcond && !(as -> skipmacro)) | |
| 868 { | |
| 869 as -> skipcount++; | |
| 870 skip_operand(p); | |
| 871 return; | |
| 872 } | |
| 873 | |
| 874 for (i = 0; (*p)[i] && !isspace((*p)[i]); i++) | |
| 875 /* do nothing */ ; | |
| 876 | |
| 877 sym = lw_strndup(*p, i); | |
| 878 | |
|
363
d96c30e60ddf
Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents:
356
diff
changeset
|
879 s = lookup_symbol(as, l, sym); |
| 351 | 880 |
| 881 lw_free(sym); | |
| 882 | |
| 883 if (!s) | |
| 884 { | |
| 885 as -> skipcond = 1; | |
| 886 as -> skipcount = 1; | |
| 887 } | |
| 888 } | |
| 889 | |
| 890 PARSEFUNC(pseudo_parse_ifndef) | |
| 891 { | |
| 892 char *sym; | |
| 893 int i; | |
| 894 struct symtabe *s; | |
| 895 | |
| 896 l -> len = 0; | |
| 897 | |
| 898 if (as -> skipcond && !(as -> skipmacro)) | |
| 899 { | |
| 900 as -> skipcount++; | |
| 901 skip_operand(p); | |
| 902 return; | |
| 903 } | |
| 904 | |
| 905 for (i = 0; (*p)[i] && !isspace((*p)[i]); i++) | |
| 906 /* do nothing */ ; | |
| 907 | |
| 908 sym = lw_strndup(*p, i); | |
| 909 | |
|
363
d96c30e60ddf
Added pass2 and various supporting logic including symbol lookups
lost@starbug
parents:
356
diff
changeset
|
910 s = lookup_symbol(as, l, sym); |
| 351 | 911 |
| 912 lw_free(sym); | |
| 913 | |
| 914 if (s) | |
| 915 { | |
| 916 as -> skipcond = 1; | |
| 917 as -> skipcount = 1; | |
| 918 } | |
| 919 } | |
| 920 | |
| 354 | 921 PARSEFUNC(pseudo_parse_error) |
| 922 { | |
| 923 lwasm_register_error(as, l, "User error: %s", *p); | |
| 924 skip_operand(p); | |
| 925 } | |
| 356 | 926 |
| 927 PARSEFUNC(pseudo_parse_includebin) | |
| 928 { | |
| 929 char *fn, *p2; | |
| 930 int delim = 0; | |
| 931 FILE *fp; | |
| 932 long flen; | |
| 933 | |
| 934 if (!**p) | |
| 935 { | |
| 936 lwasm_register_error(as, l, "Missing filename"); | |
| 937 return; | |
| 938 } | |
| 939 | |
| 940 if (**p == '"' || **p == '\'') | |
| 941 { | |
| 942 delim = **p; | |
| 943 (*p)++; | |
| 944 | |
| 945 for (p2 = *p; *p2 && *p2 != delim; p2++) | |
| 946 /* do nothing */ ; | |
| 947 } | |
| 948 else | |
| 949 { | |
| 950 for (p2 = *p; *p2 && !isspace(*p2); p2++) | |
| 951 /* do nothing */ ; | |
| 952 } | |
| 953 fn = lw_strndup(*p, p2 - *p); | |
| 954 | |
| 955 if (delim && **p) | |
| 956 (*p)++; | |
| 957 | |
| 958 fp = input_open_standalone(as, fn); | |
| 959 if (!fp) | |
| 960 { | |
| 961 lwasm_register_error(as, l, "Cannot open file"); | |
| 962 lw_free(fn); | |
| 963 return; | |
| 964 } | |
| 965 | |
| 966 l -> lstr = fn; | |
| 967 | |
| 968 fseek(fp, 0, SEEK_END); | |
| 969 flen = ftell(fp); | |
| 970 fclose(fp); | |
| 971 | |
| 972 l -> len = flen; | |
| 973 } | |
| 974 | |
| 975 EMITFUNC(pseudo_emit_includebin) | |
| 976 { | |
| 977 FILE *fp; | |
| 978 int c; | |
| 979 | |
| 980 fp = input_open_standalone(as, l -> lstr); | |
| 981 if (!fp) | |
| 982 { | |
| 983 lwasm_register_error(as, l, "Cannot open file (emit)!"); | |
| 984 return; | |
| 985 } | |
| 986 | |
| 987 for (;;) | |
| 988 { | |
| 989 c = fgetc(fp); | |
| 990 if (c == EOF) | |
| 991 { | |
| 992 fclose(fp); | |
| 993 return; | |
| 994 } | |
| 995 lwasm_emit(l, c); | |
| 996 } | |
| 997 } | |
| 998 | |
| 999 PARSEFUNC(pseudo_parse_include) | |
| 1000 { | |
| 1001 char *fn, *p2; | |
| 1002 int delim = 0; | |
| 1003 | |
| 1004 if (!**p) | |
| 1005 { | |
| 1006 lwasm_register_error(as, l, "Missing filename"); | |
| 1007 return; | |
| 1008 } | |
| 1009 | |
| 1010 if (**p == '"' || **p == '\'') | |
| 1011 { | |
| 1012 delim = **p; | |
| 1013 (*p)++; | |
| 1014 | |
| 1015 for (p2 = *p; *p2 && *p2 != delim; p2++) | |
| 1016 /* do nothing */ ; | |
| 1017 } | |
| 1018 else | |
| 1019 { | |
| 1020 for (p2 = *p; *p2 && !isspace(*p2); p2++) | |
| 1021 /* do nothing */ ; | |
| 1022 } | |
| 1023 fn = lw_strndup(*p, p2 - *p); | |
| 1024 | |
| 1025 if (delim && **p) | |
| 1026 (*p)++; | |
| 1027 | |
| 1028 input_open(as, fn); | |
| 1029 | |
| 1030 l -> len = 0; | |
| 1031 } | |
| 1032 | |
| 1033 PARSEFUNC(pseudo_parse_align) | |
| 1034 { | |
| 1035 lw_expr_t e; | |
| 1036 | |
| 1037 if (!**p) | |
| 1038 { | |
| 1039 lwasm_register_error(as, l, "Bad operand"); | |
| 1040 return; | |
| 1041 } | |
| 1042 | |
| 1043 e = lwasm_parse_expr(as, p); | |
| 1044 if (!e) | |
| 1045 { | |
| 1046 lwasm_register_error(as, l, "Bad operand"); | |
| 1047 return; | |
| 1048 } | |
| 1049 | |
| 1050 lwasm_save_expr(l, 0, e); | |
| 1051 | |
| 1052 if (**p == ',') | |
| 1053 { | |
| 1054 e = lwasm_parse_expr(as, p); | |
| 1055 } | |
| 1056 else | |
| 1057 { | |
| 1058 e = lw_expr_build(lw_expr_type_int, 0); | |
| 1059 } | |
| 1060 if (!e) | |
| 1061 { | |
| 1062 lwasm_register_error(as, l, "Bad padding"); | |
| 1063 return; | |
| 1064 } | |
| 1065 | |
| 1066 lwasm_save_expr(l, 1, e); | |
| 1067 } | |
| 1068 | |
| 1069 RESOLVEFUNC(pseudo_resolve_align) | |
| 1070 { | |
| 1071 lw_expr_t e; | |
| 1072 int align; | |
| 1073 | |
| 1074 e = lwasm_fetch_expr(l, 0); | |
| 1075 | |
| 1076 if (lw_expr_istype(e, lw_expr_type_int)) | |
| 1077 { | |
| 1078 align = lw_expr_intval(e); | |
| 1079 if (align < 1) | |
| 1080 { | |
| 1081 lwasm_register_error(as, l, "Invalid alignment"); | |
| 1082 return; | |
| 1083 } | |
| 1084 } | |
| 1085 | |
| 1086 if (lw_expr_istype(l -> addr, lw_expr_type_int)) | |
| 1087 { | |
| 1088 int a; | |
| 1089 a = lw_expr_intval(l -> addr); | |
| 1090 if (a % align == 0) | |
| 1091 { | |
| 1092 l -> len = 0; | |
| 1093 return; | |
| 1094 } | |
| 1095 l -> len = align - (a % align); | |
| 1096 return; | |
| 1097 } | |
| 1098 } | |
| 1099 | |
| 1100 EMITFUNC(pseudo_emit_align) | |
| 1101 { | |
| 1102 lw_expr_t e; | |
| 1103 int i; | |
| 1104 | |
| 1105 e = lwasm_fetch_expr(l, 1); | |
| 1106 for (i = 0; i < l -> len; i++) | |
| 1107 { | |
| 1108 lwasm_emitexpr(l, e, 1); | |
| 1109 } | |
| 1110 } |