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annotate lwasm/pseudo.c @ 350:f5666775d76f
Even more pseudo ops
| author | lost@starbug |
|---|---|
| date | Sat, 27 Mar 2010 22:59:15 -0600 |
| parents | dcd2978a7d18 |
| children | 4dba8c7e242c |
| 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 | |
| 24 #include "lwasm.h" | |
| 25 #include "instab.h" | |
| 26 | |
| 349 | 27 #include "lw_string.h" |
| 28 | |
| 347 | 29 // for "end" |
| 30 PARSEFUNC(pseudo_parse_end) | |
| 31 { | |
| 32 lw_expr_t addr; | |
| 33 | |
| 34 as -> endseen = 1; | |
| 35 | |
| 36 if (as -> output_format != OUTPUT_DECB) | |
| 37 { | |
| 38 skip_operand(p); | |
| 39 return; | |
| 40 } | |
| 41 | |
| 42 addr = lwasm_parse_expr(as, p); | |
| 43 if (!addr) | |
| 44 { | |
| 45 lwasm_register_error(as, l, "Bad expression"); | |
| 46 addr = lw_expr_build(lw_expr_type_int, 0); | |
| 47 } | |
| 48 lwasm_save_expr(l, 0, addr); | |
| 49 } | |
| 50 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
51 EMITFUNC(pseudo_emit_end) |
| 347 | 52 { |
| 53 lw_expr_t addr; | |
| 54 | |
| 55 addr = lwasm_fetch_expr(l, 0); | |
| 56 | |
| 57 if (addr) | |
| 58 { | |
| 59 if (!lw_expr_istype(addr, lw_expr_type_int)) | |
| 60 lwasm_register_error(as, l, "Exec address not constant!"); | |
| 61 else | |
| 62 as -> execaddr = lw_expr_intval(addr); | |
| 63 } | |
| 64 as -> endseen = 1; | |
| 65 } | |
| 66 | |
| 67 PARSEFUNC(pseudo_parse_fcb) | |
| 68 { | |
| 69 int i = 0; | |
| 70 lw_expr_t e; | |
| 71 | |
| 72 for (;;) | |
| 73 { | |
| 74 e = lwasm_parse_expr(as, p); | |
| 75 if (!e) | |
| 76 { | |
| 77 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 78 break; | |
| 79 } | |
| 80 lwasm_save_expr(l, i, e); | |
| 81 i++; | |
| 82 } | |
| 83 | |
| 84 l -> len = i; | |
| 85 } | |
| 86 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
87 EMITFUNC(pseudo_emit_fcb) |
| 347 | 88 { |
| 89 int i; | |
| 90 lw_expr_t e; | |
| 91 int v; | |
| 92 | |
| 93 for (i = 0; i < l -> len; i++) | |
| 94 { | |
| 95 e = lwasm_fetch_expr(l, i); | |
| 96 lwasm_emitexpr(l, e, 1); | |
| 97 } | |
| 98 } | |
| 99 | |
| 100 PARSEFUNC(pseudo_parse_fdb) | |
| 101 { | |
| 102 int i = 0; | |
| 103 lw_expr_t e; | |
| 104 | |
| 105 for (;;) | |
| 106 { | |
| 107 e = lwasm_parse_expr(as, p); | |
| 108 if (!e) | |
| 109 { | |
| 110 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 111 break; | |
| 112 } | |
| 113 lwasm_save_expr(l, i, e); | |
| 114 i++; | |
| 115 } | |
| 116 | |
| 117 l -> len = i * 2; | |
| 118 } | |
| 119 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
120 EMITFUNC(pseudo_emit_fdb) |
| 347 | 121 { |
| 122 int i; | |
| 123 lw_expr_t e; | |
| 124 int v; | |
| 125 | |
| 126 for (i = 0; i < (l -> len)/2; i++) | |
| 127 { | |
| 128 e = lwasm_fetch_expr(l, i); | |
| 129 lwasm_emitexpr(l, e, 2); | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 PARSEFUNC(pseudo_parse_fqb) | |
| 134 { | |
| 135 int i = 0; | |
| 136 lw_expr_t e; | |
| 137 | |
| 138 for (;;) | |
| 139 { | |
| 140 e = lwasm_parse_expr(as, p); | |
| 141 if (!e) | |
| 142 { | |
| 143 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 144 break; | |
| 145 } | |
| 146 lwasm_save_expr(l, i, e); | |
| 147 i++; | |
| 148 } | |
| 149 | |
| 150 l -> len = i * 4; | |
| 151 } | |
| 152 | |
|
348
11a95c6414b4
Added third func to instab to split resolve and emit logic
lost@starbug
parents:
347
diff
changeset
|
153 EMITFUNC(pseudo_emit_fqb) |
| 347 | 154 { |
| 155 int i; | |
| 156 lw_expr_t e; | |
| 157 int v; | |
| 158 | |
| 159 for (i = 0; i < (l -> len)/4; i++) | |
| 160 { | |
| 161 e = lwasm_fetch_expr(l, i); | |
| 162 lwasm_emitexpr(l, e, 4); | |
| 163 } | |
| 164 } | |
| 349 | 165 |
| 166 PARSEFUNC(pseudo_parse_fcc) | |
| 167 { | |
| 168 char delim; | |
| 169 int i; | |
| 170 | |
| 171 if (!**p) | |
| 172 { | |
| 173 lwasm_register_error(as, l, "Bad operand"); | |
| 174 return; | |
| 175 } | |
| 176 | |
| 177 delim = **p; | |
| 178 (*p)++; | |
| 179 | |
| 180 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 181 /* do nothing */ ; | |
| 182 | |
| 183 if ((*p)[i] != delim) | |
| 184 { | |
| 185 lwasm_register_error(as, l, "Bad operand"); | |
| 186 return; | |
| 187 } | |
| 188 | |
| 189 l -> lstr = lw_strndup(*p, i); | |
| 190 (*p) += i + 1; | |
| 191 | |
| 192 l -> len = i; | |
| 193 } | |
| 194 | |
| 195 EMITFUNC(pseudo_emit_fcc) | |
| 196 { | |
| 197 int i; | |
| 198 | |
| 199 for (i = 0; i < l -> len; i++) | |
| 200 lwasm_emit(l, l -> lstr[i]); | |
| 201 } | |
| 202 | |
| 203 PARSEFUNC(pseudo_parse_fcs) | |
| 204 { | |
| 205 char delim; | |
| 206 int i; | |
| 207 | |
| 208 if (!**p) | |
| 209 { | |
| 210 lwasm_register_error(as, l, "Bad operand"); | |
| 211 return; | |
| 212 } | |
| 213 | |
| 214 delim = **p; | |
| 215 (*p)++; | |
| 216 | |
| 217 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 218 /* do nothing */ ; | |
| 219 | |
| 220 if ((*p)[i] != delim) | |
| 221 { | |
| 222 lwasm_register_error(as, l, "Bad operand"); | |
| 223 return; | |
| 224 } | |
| 225 | |
| 226 l -> lstr = lw_strndup(*p, i); | |
| 227 (*p) += i + 1; | |
| 228 | |
| 229 l -> len = i; | |
| 230 } | |
| 231 | |
| 232 EMITFUNC(pseudo_emit_fcs) | |
| 233 { | |
| 234 int i; | |
| 235 | |
| 236 for (i = 0; i < l -> len - 1; i++) | |
| 237 lwasm_emit(l, l -> lstr[i]); | |
| 238 lwasm_emit(l, l -> lstr[i] | 0x80); | |
| 239 } | |
| 240 | |
| 241 PARSEFUNC(pseudo_parse_fcn) | |
| 242 { | |
| 243 char delim; | |
| 244 int i; | |
| 245 | |
| 246 if (!**p) | |
| 247 { | |
| 248 lwasm_register_error(as, l, "Bad operand"); | |
| 249 return; | |
| 250 } | |
| 251 | |
| 252 delim = **p; | |
| 253 (*p)++; | |
| 254 | |
| 255 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 256 /* do nothing */ ; | |
| 257 | |
| 258 if ((*p)[i] != delim) | |
| 259 { | |
| 260 lwasm_register_error(as, l, "Bad operand"); | |
| 261 return; | |
| 262 } | |
| 263 | |
| 264 l -> lstr = lw_strndup(*p, i); | |
| 265 (*p) += i + 1; | |
| 266 | |
| 267 l -> len = i; | |
| 268 } | |
| 269 | |
| 270 EMITFUNC(pseudo_emit_fcn) | |
| 271 { | |
| 272 int i; | |
| 273 | |
| 274 for (i = 0; i < l -> len; i++) | |
| 275 lwasm_emit(l, l -> lstr[i]); | |
| 276 lwasm_emit(l, 0); | |
| 277 } | |
| 278 | |
| 279 PARSEFUNC(pseudo_parse_rmb) | |
| 280 { | |
| 281 lw_expr_t expr; | |
| 282 | |
| 283 expr = lwasm_parse_expr(as, p); | |
| 284 if (!expr) | |
| 285 { | |
| 286 lwasm_register_error(as, l, "Bad expression"); | |
| 287 } | |
| 288 | |
| 289 lwasm_save_expr(l, 0, expr); | |
| 290 } | |
| 291 | |
| 292 RESOLVEFUNC(pseudo_resolve_rmb) | |
| 293 { | |
| 294 lw_expr_t expr; | |
| 295 | |
| 296 if (l -> len >= 0) | |
| 297 return; | |
| 298 | |
| 299 expr = lwasm_fetch_expr(l, 0); | |
| 300 | |
| 301 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 302 { | |
| 303 l -> len = lw_expr_intval(expr); | |
| 304 } | |
| 305 } | |
| 306 | |
| 307 EMITFUNC(pseudo_emit_rmb) | |
| 308 { | |
| 309 if (l -> len < 0) | |
| 310 lwasm_register_error(as, l, "Expression not constant"); | |
| 311 } | |
| 312 | |
| 313 PARSEFUNC(pseudo_parse_rmd) | |
| 314 { | |
| 315 lw_expr_t expr; | |
| 316 | |
| 317 expr = lwasm_parse_expr(as, p); | |
| 318 if (!expr) | |
| 319 { | |
| 320 lwasm_register_error(as, l, "Bad expression"); | |
| 321 } | |
| 322 | |
| 323 lwasm_save_expr(l, 0, expr); | |
| 324 } | |
| 325 | |
| 326 RESOLVEFUNC(pseudo_resolve_rmd) | |
| 327 { | |
| 328 lw_expr_t expr; | |
| 329 | |
| 330 if (l -> len >= 0) | |
| 331 return; | |
| 332 | |
| 333 expr = lwasm_fetch_expr(l, 0); | |
| 334 | |
| 335 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 336 { | |
| 337 l -> len = lw_expr_intval(expr) * 2; | |
| 338 } | |
| 339 } | |
| 340 | |
| 341 EMITFUNC(pseudo_emit_rmd) | |
| 342 { | |
| 343 if (l -> len < 0) | |
| 344 lwasm_register_error(as, l, "Expression not constant"); | |
| 345 } | |
| 346 | |
| 347 | |
| 348 PARSEFUNC(pseudo_parse_rmq) | |
| 349 { | |
| 350 lw_expr_t expr; | |
| 351 | |
| 352 expr = lwasm_parse_expr(as, p); | |
| 353 if (!expr) | |
| 354 { | |
| 355 lwasm_register_error(as, l, "Bad expression"); | |
| 356 } | |
| 357 | |
| 358 lwasm_save_expr(l, 0, expr); | |
| 359 } | |
| 360 | |
| 361 RESOLVEFUNC(pseudo_resolve_rmq) | |
| 362 { | |
| 363 lw_expr_t expr; | |
| 364 | |
| 365 if (l -> len >= 0) | |
| 366 return; | |
| 367 | |
| 368 expr = lwasm_fetch_expr(l, 0); | |
| 369 | |
| 370 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 371 { | |
| 372 l -> len = lw_expr_intval(expr) * 4; | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 EMITFUNC(pseudo_emit_rmq) | |
| 377 { | |
| 378 if (l -> len < 0) | |
| 379 lwasm_register_error(as, l, "Expression not constant"); | |
| 380 } | |
| 381 | |
| 382 | |
| 383 PARSEFUNC(pseudo_parse_zmq) | |
| 384 { | |
| 385 lw_expr_t expr; | |
| 386 | |
| 387 expr = lwasm_parse_expr(as, p); | |
| 388 if (!expr) | |
| 389 { | |
| 390 lwasm_register_error(as, l, "Bad expression"); | |
| 391 } | |
| 392 | |
| 393 lwasm_save_expr(l, 0, expr); | |
| 394 } | |
| 395 | |
| 396 RESOLVEFUNC(pseudo_resolve_zmq) | |
| 397 { | |
| 398 lw_expr_t expr; | |
| 399 | |
| 400 if (l -> len >= 0) | |
| 401 return; | |
| 402 | |
| 403 expr = lwasm_fetch_expr(l, 0); | |
| 404 | |
| 405 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 406 { | |
| 407 l -> len = lw_expr_intval(expr) * 4; | |
| 408 } | |
| 409 } | |
| 410 | |
| 411 EMITFUNC(pseudo_emit_zmq) | |
| 412 { | |
| 413 int i; | |
| 414 | |
| 415 if (l -> len < 0) | |
| 416 { | |
| 417 lwasm_register_error(as, l, "Expression not constant"); | |
| 418 return; | |
| 419 } | |
| 420 | |
| 421 for (i = 0; i < l -> len; i++) | |
| 422 lwasm_emit(l, 0); | |
| 423 } | |
| 424 | |
| 425 | |
| 426 PARSEFUNC(pseudo_parse_zmd) | |
| 427 { | |
| 428 lw_expr_t expr; | |
| 429 | |
| 430 expr = lwasm_parse_expr(as, p); | |
| 431 if (!expr) | |
| 432 { | |
| 433 lwasm_register_error(as, l, "Bad expression"); | |
| 434 } | |
| 435 | |
| 436 lwasm_save_expr(l, 0, expr); | |
| 437 } | |
| 438 | |
| 439 RESOLVEFUNC(pseudo_resolve_zmd) | |
| 440 { | |
| 441 lw_expr_t expr; | |
| 442 | |
| 443 if (l -> len >= 0) | |
| 444 return; | |
| 445 | |
| 446 expr = lwasm_fetch_expr(l, 0); | |
| 447 | |
| 448 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 449 { | |
| 450 l -> len = lw_expr_intval(expr) * 2; | |
| 451 } | |
| 452 } | |
| 453 | |
| 454 EMITFUNC(pseudo_emit_zmd) | |
| 455 { | |
| 456 int i; | |
| 457 | |
| 458 if (l -> len < 0) | |
| 459 { | |
| 460 lwasm_register_error(as, l, "Expression not constant"); | |
| 461 return; | |
| 462 } | |
| 463 | |
| 464 for (i = 0; i < l -> len; i++) | |
| 465 lwasm_emit(l, 0); | |
| 466 } | |
| 467 | |
| 468 PARSEFUNC(pseudo_parse_zmb) | |
| 469 { | |
| 470 lw_expr_t expr; | |
| 471 | |
| 472 expr = lwasm_parse_expr(as, p); | |
| 473 if (!expr) | |
| 474 { | |
| 475 lwasm_register_error(as, l, "Bad expression"); | |
| 476 } | |
| 477 | |
| 478 lwasm_save_expr(l, 0, expr); | |
| 479 } | |
| 480 | |
| 481 RESOLVEFUNC(pseudo_resolve_zmb) | |
| 482 { | |
| 483 lw_expr_t expr; | |
| 484 | |
| 485 if (l -> len >= 0) | |
| 486 return; | |
| 487 | |
| 488 expr = lwasm_fetch_expr(l, 0); | |
| 489 | |
| 490 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 491 { | |
| 492 l -> len = lw_expr_intval(expr); | |
| 493 } | |
| 494 } | |
| 495 | |
| 496 EMITFUNC(pseudo_emit_zmb) | |
| 497 { | |
| 498 int i; | |
| 499 | |
| 500 if (l -> len < 0) | |
| 501 { | |
| 502 lwasm_register_error(as, l, "Expression not constant"); | |
| 503 return; | |
| 504 } | |
| 505 | |
| 506 for (i = 0; i < l -> len; i++) | |
| 507 lwasm_emit(l, 0); | |
| 508 } | |
| 350 | 509 |
| 510 PARSEFUNC(pseudo_parse_org) | |
| 511 { | |
| 512 lw_expr_t e; | |
| 513 | |
| 514 e = lwasm_parse_expr(as, p); | |
| 515 if (!e) | |
| 516 { | |
| 517 lwasm_register_error(as, l, "Bad operand"); | |
| 518 return; | |
| 519 } | |
| 520 | |
| 521 lw_expr_destroy(l -> addr); | |
| 522 l -> addr = e; | |
| 523 l -> len = 0; | |
| 524 } | |
| 525 | |
| 526 PARSEFUNC(pseudo_parse_equ) | |
| 527 { | |
| 528 lw_expr_t e; | |
| 529 | |
| 530 if (!(l -> sym)) | |
| 531 { | |
| 532 lwasm_register_error(as, l, "Missing symbol"); | |
| 533 return; | |
| 534 } | |
| 535 | |
| 536 e = lwasm_parse_expr(as, p); | |
| 537 if (!e) | |
| 538 { | |
| 539 lwasm_register_error(as, l, "Bad operand"); | |
| 540 return; | |
| 541 } | |
| 542 | |
| 543 register_symbol(as, l, l -> sym, e, symbol_flag_none); | |
| 544 l -> symset = 1; | |
| 545 } |