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annotate lwasm/pseudo.c @ 426:652eee8f0c82
Fixed lw_expr_destroy() to not crash on NULL
| author | lost@l-w.ca |
|---|---|
| date | Sun, 19 Sep 2010 10:40:37 -0600 |
| parents | 010fb62b9f18 |
| children |
| 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 | |
|
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32 extern void register_struct_entry(asmstate_t *as, line_t *l, int size, structtab_t *ss); |
|
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33 |
| 347 | 34 // for "end" |
| 35 PARSEFUNC(pseudo_parse_end) | |
| 36 { | |
| 37 lw_expr_t addr; | |
| 38 | |
| 39 as -> endseen = 1; | |
| 370 | 40 l -> len = 0; |
| 347 | 41 |
| 42 if (as -> output_format != OUTPUT_DECB) | |
| 43 { | |
| 44 skip_operand(p); | |
| 45 return; | |
| 46 } | |
| 47 | |
| 370 | 48 if (!**p) |
| 49 { | |
| 50 addr = lw_expr_build(lw_expr_type_int, 0); | |
| 51 } | |
| 52 else | |
| 53 { | |
| 54 addr = lwasm_parse_expr(as, p); | |
| 55 } | |
| 347 | 56 if (!addr) |
| 57 { | |
| 58 lwasm_register_error(as, l, "Bad expression"); | |
| 59 addr = lw_expr_build(lw_expr_type_int, 0); | |
| 60 } | |
| 61 lwasm_save_expr(l, 0, addr); | |
| 62 } | |
| 63 | |
|
348
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Added third func to instab to split resolve and emit logic
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64 EMITFUNC(pseudo_emit_end) |
| 347 | 65 { |
| 66 lw_expr_t addr; | |
| 67 | |
| 68 addr = lwasm_fetch_expr(l, 0); | |
| 69 | |
| 70 if (addr) | |
| 71 { | |
| 72 if (!lw_expr_istype(addr, lw_expr_type_int)) | |
| 73 lwasm_register_error(as, l, "Exec address not constant!"); | |
| 74 else | |
| 75 as -> execaddr = lw_expr_intval(addr); | |
| 76 } | |
| 77 as -> endseen = 1; | |
| 78 } | |
| 79 | |
| 80 PARSEFUNC(pseudo_parse_fcb) | |
| 81 { | |
| 82 int i = 0; | |
| 83 lw_expr_t e; | |
| 84 | |
| 85 for (;;) | |
| 86 { | |
| 87 e = lwasm_parse_expr(as, p); | |
| 88 if (!e) | |
| 89 { | |
| 90 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 91 break; | |
| 92 } | |
| 382 | 93 lwasm_save_expr(l, i++, e); |
| 94 if (**p != ',') | |
| 95 break; | |
| 96 (*p)++; | |
| 347 | 97 } |
| 98 | |
| 99 l -> len = i; | |
| 100 } | |
| 101 | |
|
348
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102 EMITFUNC(pseudo_emit_fcb) |
| 347 | 103 { |
| 104 int i; | |
| 105 lw_expr_t e; | |
| 106 int v; | |
| 107 | |
| 108 for (i = 0; i < l -> len; i++) | |
| 109 { | |
| 110 e = lwasm_fetch_expr(l, i); | |
| 111 lwasm_emitexpr(l, e, 1); | |
| 112 } | |
| 113 } | |
| 114 | |
| 115 PARSEFUNC(pseudo_parse_fdb) | |
| 116 { | |
| 117 int i = 0; | |
| 118 lw_expr_t e; | |
| 119 | |
| 120 for (;;) | |
| 121 { | |
| 122 e = lwasm_parse_expr(as, p); | |
| 123 if (!e) | |
| 124 { | |
| 382 | 125 lwasm_register_error(as, l, "Bad expression (#%d)", i); |
| 347 | 126 break; |
| 127 } | |
| 382 | 128 lwasm_save_expr(l, i++, e); |
| 129 if (**p != ',') | |
| 130 break; | |
| 131 (*p)++; | |
| 347 | 132 } |
| 133 | |
| 134 l -> len = i * 2; | |
| 135 } | |
| 136 | |
|
348
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137 EMITFUNC(pseudo_emit_fdb) |
| 347 | 138 { |
| 139 int i; | |
| 140 lw_expr_t e; | |
| 141 int v; | |
| 142 | |
| 143 for (i = 0; i < (l -> len)/2; i++) | |
| 144 { | |
| 145 e = lwasm_fetch_expr(l, i); | |
| 146 lwasm_emitexpr(l, e, 2); | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 PARSEFUNC(pseudo_parse_fqb) | |
| 151 { | |
| 152 int i = 0; | |
| 153 lw_expr_t e; | |
| 154 | |
| 155 for (;;) | |
| 156 { | |
| 157 e = lwasm_parse_expr(as, p); | |
| 158 if (!e) | |
| 159 { | |
| 160 lwasm_register_error(as, l, "Bad expression (#%s)", i); | |
| 161 break; | |
| 162 } | |
| 382 | 163 lwasm_save_expr(l, i++, e); |
| 164 if (**p != ',') | |
| 165 break; | |
| 166 (*p)++; | |
| 347 | 167 } |
| 168 | |
| 169 l -> len = i * 4; | |
| 170 } | |
| 171 | |
|
348
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172 EMITFUNC(pseudo_emit_fqb) |
| 347 | 173 { |
| 174 int i; | |
| 175 lw_expr_t e; | |
| 176 int v; | |
| 177 | |
| 178 for (i = 0; i < (l -> len)/4; i++) | |
| 179 { | |
| 180 e = lwasm_fetch_expr(l, i); | |
| 181 lwasm_emitexpr(l, e, 4); | |
| 182 } | |
| 183 } | |
| 349 | 184 |
| 185 PARSEFUNC(pseudo_parse_fcc) | |
| 186 { | |
| 187 char delim; | |
| 188 int i; | |
| 189 | |
| 190 if (!**p) | |
| 191 { | |
| 192 lwasm_register_error(as, l, "Bad operand"); | |
| 193 return; | |
| 194 } | |
| 195 | |
| 196 delim = **p; | |
| 197 (*p)++; | |
| 198 | |
| 199 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 200 /* do nothing */ ; | |
| 201 | |
| 202 if ((*p)[i] != delim) | |
| 203 { | |
| 204 lwasm_register_error(as, l, "Bad operand"); | |
| 205 return; | |
| 206 } | |
| 207 | |
| 208 l -> lstr = lw_strndup(*p, i); | |
| 209 (*p) += i + 1; | |
| 210 | |
| 211 l -> len = i; | |
| 212 } | |
| 213 | |
| 214 EMITFUNC(pseudo_emit_fcc) | |
| 215 { | |
| 216 int i; | |
| 217 | |
| 218 for (i = 0; i < l -> len; i++) | |
| 219 lwasm_emit(l, l -> lstr[i]); | |
| 220 } | |
| 221 | |
| 222 PARSEFUNC(pseudo_parse_fcs) | |
| 223 { | |
| 224 char delim; | |
| 225 int i; | |
| 226 | |
| 227 if (!**p) | |
| 228 { | |
| 229 lwasm_register_error(as, l, "Bad operand"); | |
| 230 return; | |
| 231 } | |
| 232 | |
| 233 delim = **p; | |
| 234 (*p)++; | |
| 235 | |
| 236 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 237 /* do nothing */ ; | |
| 238 | |
| 239 if ((*p)[i] != delim) | |
| 240 { | |
| 241 lwasm_register_error(as, l, "Bad operand"); | |
| 242 return; | |
| 243 } | |
| 244 | |
| 245 l -> lstr = lw_strndup(*p, i); | |
| 246 (*p) += i + 1; | |
| 247 | |
| 248 l -> len = i; | |
| 249 } | |
| 250 | |
| 251 EMITFUNC(pseudo_emit_fcs) | |
| 252 { | |
| 253 int i; | |
| 254 | |
| 255 for (i = 0; i < l -> len - 1; i++) | |
| 256 lwasm_emit(l, l -> lstr[i]); | |
| 257 lwasm_emit(l, l -> lstr[i] | 0x80); | |
| 258 } | |
| 259 | |
| 260 PARSEFUNC(pseudo_parse_fcn) | |
| 261 { | |
| 262 char delim; | |
| 263 int i; | |
| 264 | |
| 265 if (!**p) | |
| 266 { | |
| 267 lwasm_register_error(as, l, "Bad operand"); | |
| 268 return; | |
| 269 } | |
| 270 | |
| 271 delim = **p; | |
| 272 (*p)++; | |
| 273 | |
| 274 for (i = 0; (*p)[i] && (*p)[i] != delim; i++) | |
| 275 /* do nothing */ ; | |
| 276 | |
| 277 if ((*p)[i] != delim) | |
| 278 { | |
| 279 lwasm_register_error(as, l, "Bad operand"); | |
| 280 return; | |
| 281 } | |
| 282 | |
| 283 l -> lstr = lw_strndup(*p, i); | |
| 284 (*p) += i + 1; | |
| 285 | |
|
414
010fb62b9f18
Fixed off by one bug in code generation for fcn
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286 l -> len = i + 1; |
| 349 | 287 } |
| 288 | |
| 289 EMITFUNC(pseudo_emit_fcn) | |
| 290 { | |
| 291 int i; | |
| 292 | |
|
414
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293 for (i = 0; i < (l -> len - 1); i++) |
| 349 | 294 lwasm_emit(l, l -> lstr[i]); |
| 295 lwasm_emit(l, 0); | |
| 296 } | |
| 297 | |
| 298 PARSEFUNC(pseudo_parse_rmb) | |
| 299 { | |
| 300 lw_expr_t expr; | |
| 301 | |
| 302 expr = lwasm_parse_expr(as, p); | |
| 303 if (!expr) | |
| 304 { | |
| 305 lwasm_register_error(as, l, "Bad expression"); | |
| 306 } | |
|
389
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307 |
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391
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308 l -> lint = 0; |
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389
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309 if (as -> instruct) |
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310 { |
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311 lwasm_reduce_expr(as, expr); |
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312 if (!lw_expr_istype(expr, lw_expr_type_int)) |
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313 { |
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314 lwasm_register_error(as, l, "Expression must be constant at parse time"); |
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315 } |
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316 else |
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317 { |
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318 int e; |
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319 e = lw_expr_intval(expr); |
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320 register_struct_entry(as, l, e, NULL); |
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321 l -> len = 0; |
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391
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Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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322 l -> lint = 1; |
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Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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323 l -> symset = 1; |
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389
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324 } |
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325 } |
| 349 | 326 |
| 327 lwasm_save_expr(l, 0, expr); | |
| 328 } | |
| 329 | |
| 330 RESOLVEFUNC(pseudo_resolve_rmb) | |
| 331 { | |
| 332 lw_expr_t expr; | |
| 333 | |
|
391
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334 if (l -> lint) |
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Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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335 return; |
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Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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336 |
| 349 | 337 if (l -> len >= 0) |
| 338 return; | |
| 339 | |
| 340 expr = lwasm_fetch_expr(l, 0); | |
| 341 | |
| 342 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 343 { | |
| 344 l -> len = lw_expr_intval(expr); | |
| 345 } | |
| 346 } | |
| 347 | |
| 348 EMITFUNC(pseudo_emit_rmb) | |
| 349 { | |
|
391
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350 if (l -> lint) |
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c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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351 return; |
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352 |
| 349 | 353 if (l -> len < 0) |
| 354 lwasm_register_error(as, l, "Expression not constant"); | |
| 355 } | |
| 356 | |
| 357 PARSEFUNC(pseudo_parse_rmd) | |
| 358 { | |
| 359 lw_expr_t expr; | |
| 360 | |
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391
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361 l -> lint = 0; |
| 349 | 362 expr = lwasm_parse_expr(as, p); |
| 363 if (!expr) | |
| 364 { | |
| 365 lwasm_register_error(as, l, "Bad expression"); | |
| 366 } | |
| 367 | |
|
389
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368 if (as -> instruct) |
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369 { |
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370 lwasm_reduce_expr(as, expr); |
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371 if (!lw_expr_istype(expr, lw_expr_type_int)) |
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372 { |
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373 lwasm_register_error(as, l, "Expression must be constant at parse time"); |
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374 } |
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375 else |
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376 { |
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377 int e; |
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378 e = lw_expr_intval(expr) * 2; |
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379 register_struct_entry(as, l, e, NULL); |
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380 l -> len = 0; |
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391
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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389
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381 l -> symset = 1; |
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c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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382 l -> lint = 1; |
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389
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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383 } |
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384 } |
| 349 | 385 lwasm_save_expr(l, 0, expr); |
| 386 } | |
| 387 | |
| 388 RESOLVEFUNC(pseudo_resolve_rmd) | |
| 389 { | |
| 390 lw_expr_t expr; | |
| 391 | |
|
391
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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392 if (l -> lint) |
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c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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393 return; |
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c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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394 |
| 349 | 395 if (l -> len >= 0) |
| 396 return; | |
| 397 | |
| 398 expr = lwasm_fetch_expr(l, 0); | |
| 399 | |
| 400 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 401 { | |
| 402 l -> len = lw_expr_intval(expr) * 2; | |
| 403 } | |
| 404 } | |
| 405 | |
| 406 EMITFUNC(pseudo_emit_rmd) | |
| 407 { | |
|
391
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Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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408 if (l -> lint) |
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c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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409 return; |
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c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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changeset
|
410 |
| 349 | 411 if (l -> len < 0) |
| 412 lwasm_register_error(as, l, "Expression not constant"); | |
| 413 } | |
| 414 | |
| 415 | |
| 416 PARSEFUNC(pseudo_parse_rmq) | |
| 417 { | |
| 418 lw_expr_t expr; | |
| 419 | |
|
391
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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changeset
|
420 l -> lint = 0; |
| 349 | 421 expr = lwasm_parse_expr(as, p); |
| 422 if (!expr) | |
| 423 { | |
| 424 lwasm_register_error(as, l, "Bad expression"); | |
| 425 } | |
|
389
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
diff
changeset
|
426 if (as -> instruct) |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
diff
changeset
|
427 { |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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diff
changeset
|
428 lwasm_reduce_expr(as, expr); |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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diff
changeset
|
429 if (!lw_expr_istype(expr, lw_expr_type_int)) |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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changeset
|
430 { |
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fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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diff
changeset
|
431 lwasm_register_error(as, l, "Expression must be constant at parse time"); |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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changeset
|
432 } |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
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changeset
|
433 else |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
diff
changeset
|
434 { |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
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changeset
|
435 int e; |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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changeset
|
436 e = lw_expr_intval(expr) * 4; |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
diff
changeset
|
437 register_struct_entry(as, l, e, NULL); |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
diff
changeset
|
438 l -> len = 0; |
|
391
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
lost@l-w.ca
parents:
389
diff
changeset
|
439 l -> symset = 1; |
|
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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parents:
389
diff
changeset
|
440 l -> lint = 1; |
|
389
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
diff
changeset
|
441 } |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
diff
changeset
|
442 } |
| 349 | 443 |
| 444 lwasm_save_expr(l, 0, expr); | |
| 445 } | |
| 446 | |
| 447 RESOLVEFUNC(pseudo_resolve_rmq) | |
| 448 { | |
| 449 lw_expr_t expr; | |
|
391
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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parents:
389
diff
changeset
|
450 |
|
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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parents:
389
diff
changeset
|
451 if (l -> lint) |
|
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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parents:
389
diff
changeset
|
452 return; |
| 349 | 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) * 4; | |
| 462 } | |
| 463 } | |
| 464 | |
| 465 EMITFUNC(pseudo_emit_rmq) | |
| 466 { | |
|
391
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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parents:
389
diff
changeset
|
467 if (l -> lint) |
|
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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parents:
389
diff
changeset
|
468 return; |
|
c1d83336e1d1
Fixed problem with structure member registration and fixed detection of operator{} type symbols in expression evaluation
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parents:
389
diff
changeset
|
469 |
| 349 | 470 if (l -> len < 0) |
| 471 lwasm_register_error(as, l, "Expression not constant"); | |
| 472 } | |
| 473 | |
| 474 | |
| 475 PARSEFUNC(pseudo_parse_zmq) | |
| 476 { | |
| 477 lw_expr_t expr; | |
| 478 | |
| 479 expr = lwasm_parse_expr(as, p); | |
| 480 if (!expr) | |
| 481 { | |
| 482 lwasm_register_error(as, l, "Bad expression"); | |
| 483 } | |
| 484 | |
| 485 lwasm_save_expr(l, 0, expr); | |
| 486 } | |
| 487 | |
| 488 RESOLVEFUNC(pseudo_resolve_zmq) | |
| 489 { | |
| 490 lw_expr_t expr; | |
| 491 | |
| 492 if (l -> len >= 0) | |
| 493 return; | |
| 494 | |
| 495 expr = lwasm_fetch_expr(l, 0); | |
| 496 | |
| 497 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 498 { | |
| 499 l -> len = lw_expr_intval(expr) * 4; | |
| 500 } | |
| 501 } | |
| 502 | |
| 503 EMITFUNC(pseudo_emit_zmq) | |
| 504 { | |
| 505 int i; | |
| 506 | |
| 507 if (l -> len < 0) | |
| 508 { | |
| 509 lwasm_register_error(as, l, "Expression not constant"); | |
| 510 return; | |
| 511 } | |
| 512 | |
| 513 for (i = 0; i < l -> len; i++) | |
| 514 lwasm_emit(l, 0); | |
| 515 } | |
| 516 | |
| 517 | |
| 518 PARSEFUNC(pseudo_parse_zmd) | |
| 519 { | |
| 520 lw_expr_t expr; | |
| 521 | |
| 522 expr = lwasm_parse_expr(as, p); | |
| 523 if (!expr) | |
| 524 { | |
| 525 lwasm_register_error(as, l, "Bad expression"); | |
| 526 } | |
| 527 | |
| 528 lwasm_save_expr(l, 0, expr); | |
| 529 } | |
| 530 | |
| 531 RESOLVEFUNC(pseudo_resolve_zmd) | |
| 532 { | |
| 533 lw_expr_t expr; | |
| 534 | |
| 535 if (l -> len >= 0) | |
| 536 return; | |
| 537 | |
| 538 expr = lwasm_fetch_expr(l, 0); | |
| 539 | |
| 540 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 541 { | |
| 542 l -> len = lw_expr_intval(expr) * 2; | |
| 543 } | |
| 544 } | |
| 545 | |
| 546 EMITFUNC(pseudo_emit_zmd) | |
| 547 { | |
| 548 int i; | |
| 549 | |
| 550 if (l -> len < 0) | |
| 551 { | |
| 552 lwasm_register_error(as, l, "Expression not constant"); | |
| 553 return; | |
| 554 } | |
| 555 | |
| 556 for (i = 0; i < l -> len; i++) | |
| 557 lwasm_emit(l, 0); | |
| 558 } | |
| 559 | |
| 560 PARSEFUNC(pseudo_parse_zmb) | |
| 561 { | |
| 562 lw_expr_t expr; | |
| 563 | |
| 564 expr = lwasm_parse_expr(as, p); | |
| 565 if (!expr) | |
| 566 { | |
| 567 lwasm_register_error(as, l, "Bad expression"); | |
| 568 } | |
| 569 | |
| 570 lwasm_save_expr(l, 0, expr); | |
| 571 } | |
| 572 | |
| 573 RESOLVEFUNC(pseudo_resolve_zmb) | |
| 574 { | |
| 575 lw_expr_t expr; | |
| 576 | |
| 577 if (l -> len >= 0) | |
| 578 return; | |
| 579 | |
| 580 expr = lwasm_fetch_expr(l, 0); | |
| 581 | |
| 582 if (lw_expr_istype(expr, lw_expr_type_int)) | |
| 583 { | |
| 584 l -> len = lw_expr_intval(expr); | |
| 585 } | |
| 586 } | |
| 587 | |
| 588 EMITFUNC(pseudo_emit_zmb) | |
| 589 { | |
| 590 int i; | |
| 591 | |
| 592 if (l -> len < 0) | |
| 593 { | |
| 594 lwasm_register_error(as, l, "Expression not constant"); | |
| 595 return; | |
| 596 } | |
| 597 | |
| 598 for (i = 0; i < l -> len; i++) | |
| 599 lwasm_emit(l, 0); | |
| 600 } | |
| 350 | 601 |
| 602 PARSEFUNC(pseudo_parse_org) | |
| 603 { | |
| 604 lw_expr_t e; | |
| 605 | |
| 351 | 606 l -> len = 0; |
| 607 | |
| 350 | 608 e = lwasm_parse_expr(as, p); |
| 609 if (!e) | |
| 610 { | |
| 611 lwasm_register_error(as, l, "Bad operand"); | |
| 612 return; | |
| 613 } | |
| 614 | |
| 615 lw_expr_destroy(l -> addr); | |
| 616 l -> addr = e; | |
| 617 l -> len = 0; | |
| 618 } | |
| 619 | |
| 620 PARSEFUNC(pseudo_parse_equ) | |
| 621 { | |
| 622 lw_expr_t e; | |
| 623 | |
| 351 | 624 l -> len = 0; |
| 625 | |
| 350 | 626 if (!(l -> sym)) |
| 627 { | |
| 628 lwasm_register_error(as, l, "Missing symbol"); | |
| 629 return; | |
| 630 } | |
| 631 | |
| 632 e = lwasm_parse_expr(as, p); | |
| 633 if (!e) | |
| 634 { | |
| 635 lwasm_register_error(as, l, "Bad operand"); | |
| 636 return; | |
| 637 } | |
| 638 | |
| 639 register_symbol(as, l, l -> sym, e, symbol_flag_none); | |
| 640 l -> symset = 1; | |
|
389
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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387
diff
changeset
|
641 l -> dptr = lookup_symbol(as, l, l -> sym); |
| 350 | 642 } |
| 351 | 643 |
| 644 PARSEFUNC(pseudo_parse_set) | |
| 645 { | |
| 646 lw_expr_t e; | |
| 647 | |
| 648 l -> len = 0; | |
| 649 | |
| 650 if (!(l -> sym)) | |
| 651 { | |
| 652 lwasm_register_error(as, l, "Missing symbol"); | |
| 653 return; | |
| 654 } | |
| 655 | |
| 656 e = lwasm_parse_expr(as, p); | |
| 657 if (!e) | |
| 658 { | |
| 659 lwasm_register_error(as, l, "Bad operand"); | |
| 660 return; | |
| 661 } | |
| 662 | |
| 663 register_symbol(as, l, l -> sym, e, symbol_flag_set); | |
| 664 l -> symset = 1; | |
|
389
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
diff
changeset
|
665 l -> dptr = lookup_symbol(as, l, l -> sym); |
| 351 | 666 } |
| 667 | |
| 668 PARSEFUNC(pseudo_parse_setdp) | |
| 669 { | |
| 670 lw_expr_t e; | |
| 671 | |
| 672 l -> len = 0; | |
| 673 | |
| 674 if (as -> output_format == OUTPUT_OBJ) | |
| 675 { | |
| 676 lwasm_register_error(as, l, "SETDP not permitted for object target"); | |
| 677 return; | |
| 678 } | |
| 679 | |
| 680 e = lwasm_parse_expr(as, p); | |
| 681 if (!e) | |
| 682 { | |
| 683 lwasm_register_error(as, l, "Bad operand"); | |
| 684 return; | |
| 685 } | |
| 686 | |
| 687 if (!lw_expr_istype(e, lw_expr_type_int)) | |
| 688 { | |
| 689 lwasm_register_error(as, l, "SETDP must be constant on pass 1"); | |
| 690 return; | |
| 691 } | |
| 692 l -> dpval = lw_expr_intval(e) & 0xff; | |
|
389
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
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parents:
387
diff
changeset
|
693 l -> dshow = l -> dpval; |
|
fbb7bfed8076
Added in structure support and fixed up some warts in the listing code (by adding more warts)
lost@l-w.ca
parents:
387
diff
changeset
|
694 l -> dsize = 1; |
| 351 | 695 } |
| 696 | |
| 697 PARSEFUNC(pseudo_parse_ifp1) | |
| 698 { | |
| 699 l -> len = 0; | |
| 700 | |
| 701 if (as -> skipcond && !(as -> skipmacro)) | |
| 702 { | |
| 703 as -> skipcount++; | |
| 704 skip_operand(p); | |
| 705 return; | |
| 706 } | |
| 707 | |
| 708 lwasm_register_warning(as, l, "IFP1 if is not supported; ignoring"); | |
| 709 | |
| 710 } | |
| 711 | |
| 712 PARSEFUNC(pseudo_parse_ifp2) | |
| 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 lwasm_register_warning(as, l, "IFP2 if is not supported; ignoring"); | |
| 724 } | |
| 725 | |
| 726 PARSEFUNC(pseudo_parse_ifeq) | |
| 727 { | |
| 728 lw_expr_t e; | |
| 729 | |
| 730 l -> len = 0; | |
| 731 | |
| 732 if (as -> skipcond && !(as -> skipmacro)) | |
| 733 { | |
| 734 as -> skipcount++; | |
| 735 skip_operand(p); | |
| 736 return; | |
| 737 } | |
| 738 | |
|
387
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
739 e = lwasm_parse_cond(as, p); |
|
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
740 if (e && lw_expr_intval(e) != 0) |
| 351 | 741 { |
| 742 as -> skipcond = 1; | |
| 743 as -> skipcount = 1; | |
| 744 } | |
| 745 } | |
| 746 | |
| 747 PARSEFUNC(pseudo_parse_ifne) | |
| 748 { | |
| 749 lw_expr_t e; | |
| 750 | |
| 751 l -> len = 0; | |
| 752 | |
| 753 if (as -> skipcond && !(as -> skipmacro)) | |
| 754 { | |
| 755 as -> skipcount++; | |
| 756 skip_operand(p); | |
| 757 return; | |
| 758 } | |
| 759 | |
|
387
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
760 e = lwasm_parse_cond(as, p); |
|
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
761 if (e && lw_expr_intval(e) == 0) |
| 351 | 762 { |
| 763 as -> skipcond = 1; | |
| 764 as -> skipcount = 1; | |
| 765 } | |
| 766 } | |
| 767 | |
| 768 | |
| 769 PARSEFUNC(pseudo_parse_ifgt) | |
| 770 { | |
| 771 lw_expr_t e; | |
| 772 | |
| 773 l -> len = 0; | |
| 774 | |
| 775 if (as -> skipcond && !(as -> skipmacro)) | |
| 776 { | |
| 777 as -> skipcount++; | |
| 778 skip_operand(p); | |
| 779 return; | |
| 780 } | |
| 781 | |
|
387
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
782 e = lwasm_parse_cond(as, p); |
|
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
783 if (e && lw_expr_intval(e) <= 0) |
| 351 | 784 { |
| 785 as -> skipcond = 1; | |
| 786 as -> skipcount = 1; | |
| 787 } | |
| 788 } | |
| 789 | |
| 790 PARSEFUNC(pseudo_parse_ifge) | |
| 791 { | |
| 792 lw_expr_t e; | |
| 793 | |
| 794 l -> len = 0; | |
| 795 | |
| 796 if (as -> skipcond && !(as -> skipmacro)) | |
| 797 { | |
| 798 as -> skipcount++; | |
| 799 skip_operand(p); | |
| 800 return; | |
| 801 } | |
| 802 | |
|
387
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
803 e = lwasm_parse_cond(as, p); |
|
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
804 if (e && lw_expr_intval(e) < 0) |
| 351 | 805 { |
| 806 as -> skipcond = 1; | |
| 807 as -> skipcount = 1; | |
| 808 } | |
| 809 } | |
| 810 | |
| 811 PARSEFUNC(pseudo_parse_iflt) | |
| 812 { | |
| 813 lw_expr_t e; | |
| 814 | |
| 815 l -> len = 0; | |
| 816 | |
| 817 if (as -> skipcond && !(as -> skipmacro)) | |
| 818 { | |
| 819 as -> skipcount++; | |
| 820 skip_operand(p); | |
| 821 return; | |
| 822 } | |
| 823 | |
|
387
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
824 e = lwasm_parse_cond(as, p); |
|
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
825 if (e && lw_expr_intval(e) >= 0) |
| 351 | 826 { |
| 827 as -> skipcond = 1; | |
| 828 as -> skipcount = 1; | |
| 829 } | |
| 830 } | |
| 831 | |
| 832 PARSEFUNC(pseudo_parse_ifle) | |
| 833 { | |
| 834 lw_expr_t e; | |
| 835 | |
| 836 l -> len = 0; | |
| 837 | |
| 838 if (as -> skipcond && !(as -> skipmacro)) | |
| 839 { | |
| 840 as -> skipcount++; | |
| 841 skip_operand(p); | |
| 842 return; | |
| 843 } | |
| 844 | |
|
387
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
845 e = lwasm_parse_cond(as, p); |
|
a741d2e4869f
Various bugfixes; fixed lwobjdump to display symbols with unprintable characters more sensibly; start of a (nonfunctional for now) testing framework
lost@l-w.ca
parents:
386
diff
changeset
|
846 if (e && lw_expr_intval(e) > 0) |
| 351 | 847 { |
| 848 as -> skipcond = 1; | |
| 849 as -> skipcount = 1; | |
| 850 } | |
| 851 } | |
| 852 | |
| 853 PARSEFUNC(pseudo_parse_endc) | |
| 854 { | |
| 855 l -> len = 0; | |
| 856 if (as -> skipcond && !(as -> skipmacro)) | |
| 857 { | |
| 858 as -> skipcount--; | |
| 413 | 859 if (as -> skipcount <= 0) |
| 351 | 860 as -> skipcond = 0; |
| 861 } | |
| 862 } | |
| 863 | |
| 864 PARSEFUNC(pseudo_parse_else) | |
| 865 { | |
| 866 l -> len = 0; | |
| 867 | |
| 868 if (as -> skipmacro) | |
| 869 return; | |
| 870 | |
| 871 if (as -> skipcond) | |
| 872 { | |
| 873 if (as -> skipcount == 1) | |
| 874 { | |
| 875 as -> skipcount = 0; | |
| 876 as -> skipcond = 0; | |
| 877 } | |
| 878 return; | |
| 879 } | |
| 880 as -> skipcond = 1; | |
| 881 as -> skipcount = 1; | |
| 882 } | |
| 883 | |
| 884 PARSEFUNC(pseudo_parse_ifdef) | |
| 885 { | |
| 886 char *sym; | |
| 887 int i; | |
| 888 struct symtabe *s; | |
| 889 | |
| 890 l -> len = 0; | |
| 891 | |
| 892 if (as -> skipcond && !(as -> skipmacro)) | |
| 893 { | |
| 894 as -> skipcount++; | |
| 895 skip_operand(p); | |
| 896 return; | |
| 897 } | |
| 898 | |
| 899 for (i = 0; (*p)[i] && !isspace((*p)[i]); i++) | |
| 900 /* do nothing */ ; | |
| 901 | |
| 902 sym = lw_strndup(*p, i); | |
| 903 | |
|
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904 s = lookup_symbol(as, l, sym); |
| 351 | 905 |
| 906 lw_free(sym); | |
| 907 | |
| 908 if (!s) | |
| 909 { | |
| 910 as -> skipcond = 1; | |
| 911 as -> skipcount = 1; | |
| 912 } | |
| 913 } | |
| 914 | |
| 915 PARSEFUNC(pseudo_parse_ifndef) | |
| 916 { | |
| 917 char *sym; | |
| 918 int i; | |
| 919 struct symtabe *s; | |
| 920 | |
| 921 l -> len = 0; | |
| 922 | |
| 923 if (as -> skipcond && !(as -> skipmacro)) | |
| 924 { | |
| 925 as -> skipcount++; | |
| 926 skip_operand(p); | |
| 927 return; | |
| 928 } | |
| 929 | |
| 930 for (i = 0; (*p)[i] && !isspace((*p)[i]); i++) | |
| 931 /* do nothing */ ; | |
| 932 | |
| 933 sym = lw_strndup(*p, i); | |
| 386 | 934 (*p) += i; |
| 351 | 935 |
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936 s = lookup_symbol(as, l, sym); |
| 351 | 937 |
| 938 lw_free(sym); | |
| 939 | |
| 940 if (s) | |
| 941 { | |
| 942 as -> skipcond = 1; | |
| 943 as -> skipcount = 1; | |
| 944 } | |
| 945 } | |
| 946 | |
| 354 | 947 PARSEFUNC(pseudo_parse_error) |
| 948 { | |
| 949 lwasm_register_error(as, l, "User error: %s", *p); | |
| 950 skip_operand(p); | |
| 951 } | |
| 356 | 952 |
|
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953 PARSEFUNC(pseudo_parse_warning) |
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954 { |
|
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955 lwasm_register_warning(as, l, "User warning: %s", *p); |
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956 skip_operand(p); |
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957 } |
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958 |
| 356 | 959 PARSEFUNC(pseudo_parse_includebin) |
| 960 { | |
| 961 char *fn, *p2; | |
| 962 int delim = 0; | |
| 963 FILE *fp; | |
| 964 long flen; | |
| 965 | |
| 966 if (!**p) | |
| 967 { | |
| 968 lwasm_register_error(as, l, "Missing filename"); | |
| 969 return; | |
| 970 } | |
| 971 | |
| 972 if (**p == '"' || **p == '\'') | |
| 973 { | |
| 974 delim = **p; | |
| 975 (*p)++; | |
| 976 | |
| 977 for (p2 = *p; *p2 && *p2 != delim; p2++) | |
| 978 /* do nothing */ ; | |
| 979 } | |
| 980 else | |
| 981 { | |
| 982 for (p2 = *p; *p2 && !isspace(*p2); p2++) | |
| 983 /* do nothing */ ; | |
| 984 } | |
| 985 fn = lw_strndup(*p, p2 - *p); | |
| 986 | |
| 987 if (delim && **p) | |
| 988 (*p)++; | |
| 989 | |
| 990 fp = input_open_standalone(as, fn); | |
| 991 if (!fp) | |
| 992 { | |
| 993 lwasm_register_error(as, l, "Cannot open file"); | |
| 994 lw_free(fn); | |
| 995 return; | |
| 996 } | |
| 997 | |
| 998 l -> lstr = fn; | |
| 999 | |
| 1000 fseek(fp, 0, SEEK_END); | |
| 1001 flen = ftell(fp); | |
| 1002 fclose(fp); | |
| 1003 | |
| 1004 l -> len = flen; | |
| 1005 } | |
| 1006 | |
| 1007 EMITFUNC(pseudo_emit_includebin) | |
| 1008 { | |
| 1009 FILE *fp; | |
| 1010 int c; | |
| 1011 | |
| 1012 fp = input_open_standalone(as, l -> lstr); | |
| 1013 if (!fp) | |
| 1014 { | |
| 1015 lwasm_register_error(as, l, "Cannot open file (emit)!"); | |
| 1016 return; | |
| 1017 } | |
| 1018 | |
| 1019 for (;;) | |
| 1020 { | |
| 1021 c = fgetc(fp); | |
| 1022 if (c == EOF) | |
| 1023 { | |
| 1024 fclose(fp); | |
| 1025 return; | |
| 1026 } | |
| 1027 lwasm_emit(l, c); | |
| 1028 } | |
| 1029 } | |
| 1030 | |
| 1031 PARSEFUNC(pseudo_parse_include) | |
| 1032 { | |
| 1033 char *fn, *p2; | |
| 386 | 1034 char *p3; |
| 356 | 1035 int delim = 0; |
| 1036 | |
| 1037 if (!**p) | |
| 1038 { | |
| 1039 lwasm_register_error(as, l, "Missing filename"); | |
| 1040 return; | |
| 1041 } | |
| 1042 | |
| 1043 if (**p == '"' || **p == '\'') | |
| 1044 { | |
| 1045 delim = **p; | |
| 1046 (*p)++; | |
| 1047 | |
| 1048 for (p2 = *p; *p2 && *p2 != delim; p2++) | |
| 1049 /* do nothing */ ; | |
| 1050 } | |
| 1051 else | |
| 1052 { | |
| 1053 for (p2 = *p; *p2 && !isspace(*p2); p2++) | |
| 1054 /* do nothing */ ; | |
| 1055 } | |
| 1056 fn = lw_strndup(*p, p2 - *p); | |
| 386 | 1057 (*p) = p2; |
| 356 | 1058 if (delim && **p) |
| 1059 (*p)++; | |
| 1060 | |
| 386 | 1061 0 == asprintf(&p3, "include:%s", fn); |
| 1062 input_open(as, p3); | |
| 1063 lw_free(p3); | |
| 356 | 1064 |
| 1065 l -> len = 0; | |
| 1066 } | |
| 1067 | |
| 1068 PARSEFUNC(pseudo_parse_align) | |
| 1069 { | |
| 1070 lw_expr_t e; | |
| 1071 if (!**p) | |
| 1072 { | |
| 1073 lwasm_register_error(as, l, "Bad operand"); | |
| 1074 return; | |
| 1075 } | |
| 1076 | |
| 1077 e = lwasm_parse_expr(as, p); | |
| 382 | 1078 |
| 356 | 1079 if (!e) |
| 1080 { | |
| 1081 lwasm_register_error(as, l, "Bad operand"); | |
| 1082 return; | |
| 1083 } | |
| 1084 | |
| 1085 lwasm_save_expr(l, 0, e); | |
| 1086 | |
| 1087 if (**p == ',') | |
| 1088 { | |
| 1089 e = lwasm_parse_expr(as, p); | |
| 1090 } | |
| 1091 else | |
| 1092 { | |
| 1093 e = lw_expr_build(lw_expr_type_int, 0); | |
| 1094 } | |
| 1095 if (!e) | |
| 1096 { | |
| 1097 lwasm_register_error(as, l, "Bad padding"); | |
| 1098 return; | |
| 1099 } | |
| 1100 | |
| 1101 lwasm_save_expr(l, 1, e); | |
| 1102 } | |
| 1103 | |
| 1104 RESOLVEFUNC(pseudo_resolve_align) | |
| 1105 { | |
| 1106 lw_expr_t e; | |
| 1107 int align; | |
| 1108 | |
| 1109 e = lwasm_fetch_expr(l, 0); | |
| 1110 | |
| 1111 if (lw_expr_istype(e, lw_expr_type_int)) | |
| 1112 { | |
| 1113 align = lw_expr_intval(e); | |
| 1114 if (align < 1) | |
| 1115 { | |
| 1116 lwasm_register_error(as, l, "Invalid alignment"); | |
| 1117 return; | |
| 1118 } | |
| 1119 } | |
| 1120 | |
| 1121 if (lw_expr_istype(l -> addr, lw_expr_type_int)) | |
| 1122 { | |
| 1123 int a; | |
| 1124 a = lw_expr_intval(l -> addr); | |
| 1125 if (a % align == 0) | |
| 1126 { | |
| 1127 l -> len = 0; | |
| 1128 return; | |
| 1129 } | |
| 1130 l -> len = align - (a % align); | |
| 1131 return; | |
| 1132 } | |
| 1133 } | |
| 1134 | |
| 1135 EMITFUNC(pseudo_emit_align) | |
| 1136 { | |
| 1137 lw_expr_t e; | |
| 1138 int i; | |
| 1139 | |
| 1140 e = lwasm_fetch_expr(l, 1); | |
| 1141 for (i = 0; i < l -> len; i++) | |
| 1142 { | |
| 1143 lwasm_emitexpr(l, e, 1); | |
| 1144 } | |
| 1145 } |