Mercurial > hg-old > index.cgi
annotate src/pseudo.c @ 54:360d53062bb9
Fixed typo in instruction table and added END directive
| author | lost |
|---|---|
| date | Sun, 04 Jan 2009 20:38:12 +0000 |
| parents | 493cb8ea50a0 |
| children | 55260a178667 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 pseudo.c |
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3 Copyright © 2009 William Astle |
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4 |
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5 This file is part of LWASM. |
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6 |
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7 LWASM is free software: you can redistribute it and/or modify it under the |
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8 terms of the GNU General Public License as published by the Free Software |
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9 Foundation, either version 3 of the License, or (at your option) any later |
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10 version. |
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11 |
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12 This program is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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15 more details. |
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16 |
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17 You should have received a copy of the GNU General Public License along with |
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18 this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
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20 |
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21 This file implements the various pseudo operations. |
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22 */ |
| 0 | 23 |
| 24 #include <stdlib.h> | |
| 50 | 25 #include <string.h> |
| 0 | 26 #include "lwasm.h" |
| 27 #include "instab.h" | |
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28 #include "expr.h" |
| 52 | 29 #include "util.h" |
| 0 | 30 |
| 52 | 31 extern int lwasm_read_file(asmstate_t *as, const char *filename); |
| 0 | 32 |
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33 OPFUNC(pseudo_org) |
| 0 | 34 { |
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35 int rval; |
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36 lwasm_expr_stack_t *s; |
| 52 | 37 |
| 38 if (as -> passnum != 1) | |
| 39 { | |
| 40 // org is not needed to be processed on pass 2 | |
| 41 // this will prevent phasing errors for forward references that | |
| 42 // resolve on the second pass | |
| 43 // we saved the org address in l -> codeaddr on pass 1 | |
| 44 as -> addr = l -> codeaddr; | |
| 45 return; | |
| 46 } | |
| 0 | 47 |
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48 if (l -> sym) |
| 0 | 49 { |
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50 register_error(as, l, 1, "No symbol allowed with ORG"); |
| 0 | 51 } |
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52 s = lwasm_evaluate_expr(as, l, *p, NULL); |
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53 if (!s) |
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54 { |
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55 register_error(as, l, 1, "Bad expression"); |
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56 return; |
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57 } |
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58 if (!lwasm_expr_is_constant(s)) |
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59 { |
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60 register_error(as, l, 1, "Illegal incomplete reference (pass 1)"); |
| 50 | 61 lwasm_expr_stack_free(s); |
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62 return; |
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63 } |
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64 rval = lwasm_expr_get_value(s) & 0xffff; |
| 50 | 65 lwasm_expr_stack_free(s); |
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66 l -> codeaddr = rval; |
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67 l -> addrset = 1; |
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68 as -> addr = rval; |
| 0 | 69 } |
| 70 | |
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71 /* |
| 52 | 72 The operand for include is a string optionally enclosed in " |
| 73 */ | |
| 74 OPFUNC(pseudo_include) | |
| 0 | 75 { |
| 76 int v1; | |
| 52 | 77 char *fn; |
| 0 | 78 |
| 52 | 79 // only include files on pass 1 |
| 80 // but make sure local include context is right | |
| 81 // for the next line... | |
| 0 | 82 if (as -> passnum != 1) |
| 52 | 83 { |
| 84 as -> context += 1; | |
| 0 | 85 return; |
| 52 | 86 } |
| 87 | |
| 88 while (**p && isspace(**p)) | |
| 89 (*p)++; | |
| 90 | |
| 91 if (!**p) | |
| 0 | 92 { |
| 52 | 93 register_error(as, l, 1, "Bad file name"); |
| 0 | 94 return; |
| 95 } | |
| 52 | 96 |
| 97 if (**p == '"') | |
| 98 { | |
| 99 // search for ending " | |
| 100 (*p)++; | |
| 101 for (v1 = 0; *((*p)+v1) && *((*p)+v1) != '"'; v1++) | |
| 102 /* do nothing */ ; | |
| 103 if (*((*p)+v1) != '"') | |
| 104 { | |
| 105 register_error(as, l, 1, "Bad file name"); | |
| 106 return; | |
| 107 } | |
| 108 } | |
| 109 else | |
| 0 | 110 { |
| 52 | 111 // search for a space type character |
| 112 for (v1 = 0; *((*p)+v1) && !isspace(*((*p)+v1)); v1++) | |
| 113 ; | |
| 0 | 114 } |
| 52 | 115 |
| 116 fn = lwasm_alloc(v1 + 1); | |
| 117 memcpy(fn, *p, v1); | |
| 118 fn[v1] = '\0'; | |
| 119 | |
| 120 // end local label context on include | |
| 121 as -> context += 1; | |
| 122 if (lwasm_read_file(as, fn) < 0) | |
| 123 { | |
| 124 register_error(as, l, 1, "File include error (%s)", fn); | |
| 125 } | |
| 126 lwasm_free(fn); | |
| 0 | 127 } |
| 128 | |
| 50 | 129 OPFUNC(pseudo_rmb) |
| 0 | 130 { |
| 50 | 131 int rval; |
| 132 lwasm_expr_stack_t *s; | |
| 0 | 133 |
| 50 | 134 s = lwasm_evaluate_expr(as, l, *p, NULL); |
| 135 if (!s) | |
| 0 | 136 { |
| 50 | 137 register_error(as, l, 1, "Bad expression"); |
| 0 | 138 return; |
| 139 } | |
| 50 | 140 if (!lwasm_expr_is_constant(s)) |
| 0 | 141 { |
| 50 | 142 register_error(as, l, 1, "Illegal incomplete reference (pass 1)"); |
| 143 lwasm_expr_stack_free(s); | |
| 0 | 144 return; |
| 145 } | |
| 50 | 146 rval = lwasm_expr_get_value(s); |
| 147 lwasm_expr_stack_free(s); | |
| 148 l -> nocodelen = rval; | |
| 149 as -> addr += rval; | |
| 0 | 150 } |
| 53 | 151 |
| 152 OPFUNC(pseudo_rmd) | |
| 0 | 153 { |
| 53 | 154 int rval; |
| 155 lwasm_expr_stack_t *s; | |
| 0 | 156 |
| 53 | 157 s = lwasm_evaluate_expr(as, l, *p, NULL); |
| 158 if (!s) | |
| 0 | 159 { |
| 53 | 160 register_error(as, l, 1, "Bad expression"); |
| 0 | 161 return; |
| 162 } | |
| 53 | 163 if (!lwasm_expr_is_constant(s)) |
| 0 | 164 { |
| 53 | 165 register_error(as, l, 1, "Illegal incomplete reference (pass 1)"); |
| 166 lwasm_expr_stack_free(s); | |
| 0 | 167 return; |
| 168 } | |
| 53 | 169 rval = lwasm_expr_get_value(s) * 2; |
| 170 lwasm_expr_stack_free(s); | |
| 171 l -> nocodelen = rval; | |
| 172 as -> addr += rval; | |
| 0 | 173 } |
| 174 | |
| 53 | 175 OPFUNC(pseudo_rmq) |
| 0 | 176 { |
| 53 | 177 int rval; |
| 178 lwasm_expr_stack_t *s; | |
| 0 | 179 |
| 53 | 180 s = lwasm_evaluate_expr(as, l, *p, NULL); |
| 181 if (!s) | |
| 0 | 182 { |
| 53 | 183 register_error(as, l, 1, "Bad expression"); |
| 0 | 184 return; |
| 185 } | |
| 53 | 186 if (!lwasm_expr_is_constant(s)) |
| 0 | 187 { |
| 53 | 188 register_error(as, l, 1, "Illegal incomplete reference (pass 1)"); |
| 189 lwasm_expr_stack_free(s); | |
| 0 | 190 return; |
| 191 } | |
| 53 | 192 rval = lwasm_expr_get_value(s) * 4; |
| 193 lwasm_expr_stack_free(s); | |
| 194 l -> nocodelen = rval; | |
| 195 as -> addr += rval; | |
| 0 | 196 } |
| 197 | |
| 53 | 198 OPFUNC(pseudo_zmb) |
| 0 | 199 { |
| 53 | 200 int rval; |
| 201 lwasm_expr_stack_t *s; | |
| 0 | 202 |
| 53 | 203 s = lwasm_evaluate_expr(as, l, *p, NULL); |
| 204 if (!s) | |
| 0 | 205 { |
| 53 | 206 register_error(as, l, 1, "Bad expression"); |
| 0 | 207 return; |
| 208 } | |
| 53 | 209 if (!lwasm_expr_is_constant(s)) |
| 0 | 210 { |
| 53 | 211 register_error(as, l, 1, "Illegal incomplete reference (pass 1)"); |
| 212 lwasm_expr_stack_free(s); | |
| 0 | 213 return; |
| 214 } | |
| 53 | 215 rval = lwasm_expr_get_value(s); |
| 216 lwasm_expr_stack_free(s); | |
| 217 while (rval-- > 0) | |
| 0 | 218 { |
| 53 | 219 lwasm_emit(as, l, 0); |
| 0 | 220 } |
| 221 } | |
| 222 | |
| 53 | 223 OPFUNC(pseudo_zmd) |
| 0 | 224 { |
| 53 | 225 int rval; |
| 226 lwasm_expr_stack_t *s; | |
| 0 | 227 |
| 53 | 228 s = lwasm_evaluate_expr(as, l, *p, NULL); |
| 229 if (!s) | |
| 0 | 230 { |
| 53 | 231 register_error(as, l, 1, "Bad expression"); |
| 0 | 232 return; |
| 233 } | |
| 53 | 234 if (!lwasm_expr_is_constant(s)) |
| 0 | 235 { |
| 53 | 236 register_error(as, l, 1, "Illegal incomplete reference (pass 1)"); |
| 237 lwasm_expr_stack_free(s); | |
| 0 | 238 return; |
| 239 } | |
| 53 | 240 rval = lwasm_expr_get_value(s); |
| 241 lwasm_expr_stack_free(s); | |
| 242 while (rval-- > 0) | |
| 0 | 243 { |
| 53 | 244 lwasm_emit(as, l, 0); |
| 245 lwasm_emit(as, l, 0); | |
| 0 | 246 } |
| 247 } | |
| 248 | |
| 53 | 249 OPFUNC(pseudo_zmq) |
| 250 { | |
| 251 int rval; | |
| 252 lwasm_expr_stack_t *s; | |
| 253 | |
| 254 s = lwasm_evaluate_expr(as, l, *p, NULL); | |
| 255 if (!s) | |
| 256 { | |
| 257 register_error(as, l, 1, "Bad expression"); | |
| 258 return; | |
| 259 } | |
| 260 if (!lwasm_expr_is_constant(s)) | |
| 261 { | |
| 262 register_error(as, l, 1, "Illegal incomplete reference (pass 1)"); | |
| 263 lwasm_expr_stack_free(s); | |
| 264 return; | |
| 265 } | |
| 266 rval = lwasm_expr_get_value(s); | |
| 267 lwasm_expr_stack_free(s); | |
| 268 while (rval-- > 0) | |
| 269 { | |
| 270 lwasm_emit(as, l, 0); | |
| 271 lwasm_emit(as, l, 0); | |
| 272 lwasm_emit(as, l, 0); | |
| 273 lwasm_emit(as, l, 0); | |
| 274 } | |
| 275 } | |
| 276 | |
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277 OPFUNC(pseudo_end) |
| 0 | 278 { |
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279 int rval; |
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280 lwasm_expr_stack_t *s; |
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281 |
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282 |
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283 as -> endseen = 1; |
| 0 | 284 |
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285 // address only matters for DECB output |
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286 if (as -> outformat != OUTPUT_DECB) |
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287 return; |
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288 |
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289 s = lwasm_evaluate_expr(as, l, *p, NULL); |
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290 if (!s) |
| 0 | 291 { |
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292 register_error(as, l, 1, "Bad expression"); |
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293 return; |
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294 } |
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295 if (!lwasm_expr_is_constant(s)) |
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296 { |
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297 register_error(as, l, 2, "Incomplete reference"); |
| 0 | 298 } |
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299 rval = lwasm_expr_get_value(s); |
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300 lwasm_expr_stack_free(s); |
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301 |
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302 rval = rval & 0xffff; |
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303 if (as -> passnum == 2) |
| 0 | 304 { |
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305 as -> execaddr = rval; |
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306 l -> symaddr = rval; |
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307 l -> addrset = 2; |
| 0 | 308 } |
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309 } |
| 0 | 310 |
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311 /* |
| 0 | 312 void pseudo_align(asmstate_t *as, sourceline_t *cl, char **optr) |
| 313 { | |
| 314 int rval, v1; | |
| 315 int cn; | |
| 316 | |
| 317 rval = eval_expr(as, cl, optr, &v1); | |
| 318 if (rval < 0) | |
| 319 { | |
| 320 errorp1(ERR_FORWARD); | |
| 321 return; | |
| 322 } | |
| 323 cn = cl -> addr % v1; | |
| 324 if (cn) | |
| 325 cn = v1 - cn; | |
| 326 | |
| 327 while (cn) | |
| 328 { | |
| 329 emit(0); | |
| 330 cn--; | |
| 331 } | |
| 332 } | |
| 50 | 333 */ |
| 334 OPFUNC(pseudo_equ) | |
| 0 | 335 { |
| 50 | 336 lwasm_expr_stack_t *s; |
| 337 int rval; | |
| 52 | 338 |
| 339 // equ is not needed to be processed on pass 2 | |
| 340 if (as -> passnum != 1) | |
| 341 return; | |
| 342 | |
| 50 | 343 if (l -> sym == NULL) |
| 0 | 344 { |
| 50 | 345 register_error(as, l, 1, "No symbol specified"); |
| 0 | 346 return; |
| 347 } | |
| 50 | 348 |
| 349 s = lwasm_evaluate_expr(as, l, *p, NULL); | |
| 350 | |
| 351 if (!s) | |
| 0 | 352 { |
| 50 | 353 register_error(as, l, 1, "Bad expression"); |
| 354 rval = 0; | |
| 0 | 355 } |
| 50 | 356 else |
| 0 | 357 { |
| 50 | 358 if (!lwasm_expr_is_constant(s)) |
| 359 register_error(as, l, 1, "Invalid incomplete reference (pass 1)"); | |
| 360 rval = lwasm_expr_get_value(s); | |
| 361 lwasm_expr_stack_free(s); | |
| 0 | 362 } |
| 50 | 363 l -> symaddr = rval & 0xFFFF; |
| 364 l -> addrset = 2; | |
| 365 if (strchr(l -> sym, '@') || strchr(l -> sym, '?')) | |
| 366 lwasm_set_symbol(as, l -> sym, as -> context, l -> symaddr); | |
| 367 else | |
| 368 lwasm_set_symbol(as, l -> sym, -1, l -> symaddr); | |
| 0 | 369 } |
| 50 | 370 /* |
| 0 | 371 void pseudo_set(asmstate_t *as, sourceline_t *cl, char **optr) |
| 372 { | |
| 373 int rval, v1; | |
| 374 | |
| 375 if (cl -> hassym == 0) | |
| 376 { | |
| 377 errorp1(ERR_NOSYM); | |
| 378 return; | |
| 379 } | |
| 380 rval = eval_expr(as, cl, optr, &v1); | |
| 381 // eval_expr returns -1 if there was a forward ref | |
| 382 // or -2 if the expr was invalid | |
| 383 if (rval == -2) | |
| 384 { | |
| 385 // carp | |
| 386 errorp1(ERR_FORWARD); | |
| 387 } | |
| 388 if (rval < 0) | |
| 389 { | |
| 390 // remove symbol ref | |
| 391 cl -> hassym = 0; | |
| 392 // mark as a "comment" so it isn't processed next time | |
| 393 cl -> opcode = -1; | |
| 394 return; | |
| 395 } | |
| 396 cl -> code_symloc = v1; | |
| 397 cl -> isset = 1; | |
| 398 cl -> isequ = 1; | |
| 399 cl -> symaddr = v1 & 0xFFFF; | |
| 400 } | |
| 401 | |
| 402 void pseudo_setdp(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 403 { | |
| 404 int rval, v1; | |
| 405 | |
| 406 if (cl -> hassym) | |
| 407 { | |
| 408 register_error(as, cl, ERR_SYM); | |
| 409 cl -> hassym = 0; | |
| 410 return; | |
| 411 } | |
| 412 else | |
| 413 { | |
| 414 rval = eval_expr(as, cl, optr, &v1); | |
| 415 if (rval == -1) | |
| 416 { | |
| 417 errorp1(ERR_FORWARD); | |
| 418 } | |
| 419 if (rval < 0) | |
| 420 { | |
| 421 cl -> opcode = -1; | |
| 422 return; | |
| 423 } | |
| 424 } | |
| 425 // setdp needs to resolve properly on pass 2 | |
| 426 if (v1 > 0xff || v1 < 0) | |
| 427 { | |
| 428 errorp1(ERR_OVERFLOW); | |
| 429 } | |
| 430 as -> dpval = v1 & 0xff; | |
| 431 cl -> dpval = v1 & 0xff; | |
| 432 cl -> issetdp = 1; | |
| 433 cl -> numcodebytes = 0; | |
| 434 //printf("%s\n", "SETDP2"); | |
| 435 } | |
| 436 | |
| 437 void pseudo_fcc(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 438 { | |
| 439 int cn = 0; | |
| 440 int delim = 0; | |
| 441 | |
| 442 delim = *(*optr)++; | |
| 443 if (!delim) | |
| 444 { | |
| 445 errorp1(ERR_BADOPER); | |
| 446 } | |
| 447 else | |
| 448 { | |
| 449 while (**optr && **optr != delim) | |
| 450 { | |
| 451 emit(**optr); | |
| 452 (*optr)++; | |
| 453 cn += 1; | |
| 454 } | |
| 455 } | |
| 456 cl -> len = cn; | |
| 457 } | |
| 458 | |
| 459 void pseudo_fcs(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 460 { | |
| 461 int cn = 0; | |
| 462 int delim = 0; | |
| 463 | |
| 464 delim = *(*optr)++; | |
| 465 if (!delim) | |
| 466 { | |
| 467 errorp1(ERR_BADOPER); | |
| 468 } | |
| 469 else | |
| 470 { | |
| 471 while (**optr && **optr != delim) | |
| 472 { | |
| 473 if (!*((*optr) + 1) || *((*optr) + 1) == delim) | |
| 474 emit((**optr) | 0x80); | |
| 475 else | |
| 476 emit(**optr); | |
| 477 (*optr)++; | |
| 478 cn += 1; | |
| 479 } | |
| 480 } | |
| 481 cl -> len = cn; | |
| 482 } | |
| 483 | |
| 484 void pseudo_fcn(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 485 { | |
| 486 int cn = 0; | |
| 487 int delim = 0; | |
| 488 | |
| 489 delim = *(*optr)++; | |
| 490 if (!delim) | |
| 491 { | |
| 492 errorp1(ERR_BADOPER); | |
| 493 } | |
| 494 else | |
| 495 { | |
| 496 while (**optr && **optr != delim) | |
| 497 { | |
| 498 emit(**optr); | |
| 499 (*optr)++; | |
| 500 cn += 1; | |
| 501 } | |
| 502 } | |
| 503 emit(0); | |
| 504 cl -> len = cn + 1; | |
| 505 } | |
| 506 | |
| 507 void pseudo_fcb(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 508 { | |
| 509 int rval, v1; | |
| 510 | |
| 511 fcb_again: | |
| 512 rval = eval_expr(as, cl, optr, &v1); | |
| 513 if (v1 < -127 || v1 > 0xff) | |
| 514 errorp2(ERR_OVERFLOW); | |
| 515 emit(v1 & 0xff); | |
| 516 if (**optr == ',') | |
| 517 { | |
| 518 (*optr)++; | |
| 519 goto fcb_again; | |
| 520 } | |
| 521 } | |
| 522 | |
| 523 void pseudo_fdb(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 524 { | |
| 525 int rval, v1; | |
| 526 | |
| 527 fdb_again: | |
| 528 rval = eval_expr(as, cl, optr, &v1); | |
| 529 emit((v1 >> 8) & 0xff); | |
| 530 emit(v1 & 0xff); | |
| 531 if (**optr == ',') | |
| 532 { | |
| 533 (*optr)++; | |
| 534 goto fdb_again; | |
| 535 } | |
| 536 } | |
| 537 | |
| 538 void pseudo_fqb(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 539 { | |
| 540 int rval, v1; | |
| 541 | |
| 542 fqb_again: | |
| 543 rval = eval_expr(as, cl, optr, &v1); | |
| 544 emit((v1 >> 24) & 0xff); | |
| 545 emit((v1 >> 16) & 0xff); | |
| 546 emit((v1 >> 8) & 0xff); | |
| 547 emit(v1 & 0xff); | |
| 548 if (**optr == ',') | |
| 549 { | |
| 550 (*optr)++; | |
| 551 goto fqb_again; | |
| 552 } | |
| 553 } | |
| 554 | |
| 555 // don't need to do anything if we are executing one of these | |
| 556 void pseudo_endc(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 557 { | |
| 558 return; | |
| 559 } | |
| 560 | |
| 561 // if "else" executes, we must be going into an "ignore" state | |
| 562 void pseudo_else(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 563 { | |
| 564 as -> skipcond = 1; | |
| 565 as -> skipcount = 1; | |
| 566 } | |
| 567 | |
| 568 void pseudo_ifne(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 569 { | |
| 570 int v1; | |
| 571 int rval; | |
| 572 // printf("ifne %s\n", *optr); | |
| 573 rval = eval_expr(as, cl, optr, &v1); | |
| 574 if (rval < 0) | |
| 575 { | |
| 576 errorp1(ERR_BADCOND); | |
| 577 } | |
| 578 else | |
| 579 { | |
| 580 // printf("Condition value: %d\n", v1); | |
| 581 if (!v1) | |
| 582 { | |
| 583 // printf("condition no match\n"); | |
| 584 as -> skipcond = 1; | |
| 585 as -> skipcount = 1; | |
| 586 } | |
| 587 } | |
| 588 } | |
| 589 void pseudo_ifeq(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 590 { | |
| 591 int v1; | |
| 592 int rval; | |
| 593 | |
| 594 rval = eval_expr(as, cl, optr, &v1); | |
| 595 if (rval < 0) | |
| 596 { | |
| 597 errorp1(ERR_BADCOND); | |
| 598 } | |
| 599 else | |
| 600 { | |
| 601 if (v1) | |
| 602 { | |
| 603 as -> skipcond = 1; | |
| 604 as -> skipcount = 1; | |
| 605 } | |
| 606 } | |
| 607 } | |
| 608 void pseudo_iflt(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 609 { | |
| 610 int v1; | |
| 611 int rval; | |
| 612 | |
| 613 rval = eval_expr(as, cl, optr, &v1); | |
| 614 if (rval < 0) | |
| 615 { | |
| 616 errorp1(ERR_BADCOND); | |
| 617 } | |
| 618 else | |
| 619 { | |
| 620 if (v1 >= 0) | |
| 621 { | |
| 622 as -> skipcond = 1; | |
| 623 as -> skipcount = 1; | |
| 624 } | |
| 625 } | |
| 626 } | |
| 627 void pseudo_ifle(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 628 { | |
| 629 int v1; | |
| 630 int rval; | |
| 631 | |
| 632 rval = eval_expr(as, cl, optr, &v1); | |
| 633 if (rval < 0) | |
| 634 { | |
| 635 errorp1(ERR_BADCOND); | |
| 636 } | |
| 637 else | |
| 638 { | |
| 639 if (v1 > 0) | |
| 640 { | |
| 641 as -> skipcond = 1; | |
| 642 as -> skipcount = 1; | |
| 643 } | |
| 644 } | |
| 645 } | |
| 646 void pseudo_ifgt(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 647 { | |
| 648 int v1; | |
| 649 int rval; | |
| 650 | |
| 651 rval = eval_expr(as, cl, optr, &v1); | |
| 652 if (rval < 0) | |
| 653 { | |
| 654 errorp1(ERR_BADCOND); | |
| 655 } | |
| 656 else | |
| 657 { | |
| 658 if (v1 <= 0) | |
| 659 { | |
| 660 as -> skipcond = 1; | |
| 661 as -> skipcount = 1; | |
| 662 } | |
| 663 } | |
| 664 } | |
| 665 void pseudo_ifge(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 666 { | |
| 667 int v1; | |
| 668 int rval; | |
| 669 | |
| 670 rval = eval_expr(as, cl, optr, &v1); | |
| 671 if (rval < 0) | |
| 672 { | |
| 673 errorp1(ERR_BADCOND); | |
| 674 } | |
| 675 else | |
| 676 { | |
| 677 if (v1 < 0) | |
| 678 { | |
| 679 as -> skipcond = 1; | |
| 680 as -> skipcount = 1; | |
| 681 } | |
| 682 } | |
| 683 } | |
| 684 | |
| 685 void pseudo_error(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 686 { | |
| 687 cl -> user_error = strdup(*optr); | |
| 688 errorp1(ERR_USER); | |
| 689 } | |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
690 */ |