Mercurial > hg-old > index.cgi
annotate src/pseudo.c @ 63:d85ba47b1e8f
Moved symbol registration so symbols that are in skipped code do not get registered and so EQU/SET can do their own registration
| author | lost |
|---|---|
| date | Mon, 05 Jan 2009 01:17:23 +0000 |
| parents | 035b95a3690f |
| children | aaddd47219b4 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
4
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
2 pseudo.c |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
3 Copyright © 2009 William Astle |
|
4
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
4 |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
5 This file is part of LWASM. |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
6 |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
7 LWASM is free software: you can redistribute it and/or modify it under the |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
8 terms of the GNU General Public License as published by the Free Software |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
9 Foundation, either version 3 of the License, or (at your option) any later |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
10 version. |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
11 |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
12 This program is distributed in the hope that it will be useful, but WITHOUT |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
15 more details. |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
16 |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
17 You should have received a copy of the GNU General Public License along with |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
18 this program. If not, see <http://www.gnu.org/licenses/>. |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
19 |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
20 |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
21 This file implements the various pseudo operations. |
|
34568fab6058
Fixed package to include all required files; also added copyright preamble to all source files
lost
parents:
0
diff
changeset
|
22 */ |
| 0 | 23 |
| 24 #include <stdlib.h> | |
| 50 | 25 #include <string.h> |
| 0 | 26 #include "lwasm.h" |
| 27 #include "instab.h" | |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
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 |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
33 OPFUNC(pseudo_org) |
| 0 | 34 { |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
35 int rval; |
|
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
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 |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
48 if (l -> sym) |
| 0 | 49 { |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
50 register_error(as, l, 1, "No symbol allowed with ORG"); |
| 0 | 51 } |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
52 s = lwasm_evaluate_expr(as, l, *p, NULL); |
|
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
53 if (!s) |
|
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
54 { |
|
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
55 register_error(as, l, 1, "Bad expression"); |
|
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
56 return; |
|
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
57 } |
|
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
58 if (!lwasm_expr_is_constant(s)) |
|
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
59 { |
|
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
60 register_error(as, l, 1, "Illegal incomplete reference (pass 1)"); |
| 50 | 61 lwasm_expr_stack_free(s); |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
62 return; |
|
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
63 } |
|
49
21ae0fab469b
Added needed infra for useful listing of EQU and ORG type statements
lost
parents:
47
diff
changeset
|
64 rval = lwasm_expr_get_value(s) & 0xffff; |
| 50 | 65 lwasm_expr_stack_free(s); |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
66 l -> codeaddr = rval; |
|
49
21ae0fab469b
Added needed infra for useful listing of EQU and ORG type statements
lost
parents:
47
diff
changeset
|
67 l -> addrset = 1; |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
68 as -> addr = rval; |
| 0 | 69 } |
| 70 | |
|
47
804d7465e0f9
Implemented ORG and fixed problems with constants using $, &, or @ to specify base
lost
parents:
4
diff
changeset
|
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; |
| 57 | 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 { |
| 57 | 84 as -> context = lwasm_next_context(as); |
| 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 | |
| 57 | 121 as -> context = lwasm_next_context(as); |
| 52 | 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 | |
|
54
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
277 OPFUNC(pseudo_end) |
| 0 | 278 { |
|
54
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
279 int rval; |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
280 lwasm_expr_stack_t *s; |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
281 |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
282 |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
283 as -> endseen = 1; |
| 0 | 284 |
|
54
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
285 // address only matters for DECB output |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
286 if (as -> outformat != OUTPUT_DECB) |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
287 return; |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
288 |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
289 s = lwasm_evaluate_expr(as, l, *p, NULL); |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
290 if (!s) |
| 0 | 291 { |
|
54
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
292 register_error(as, l, 1, "Bad expression"); |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
293 return; |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
294 } |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
295 if (!lwasm_expr_is_constant(s)) |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
296 { |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
297 register_error(as, l, 2, "Incomplete reference"); |
| 0 | 298 } |
|
54
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
299 rval = lwasm_expr_get_value(s); |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
300 lwasm_expr_stack_free(s); |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
301 |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
302 rval = rval & 0xffff; |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
303 if (as -> passnum == 2) |
| 0 | 304 { |
|
54
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
305 as -> execaddr = rval; |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
306 l -> symaddr = rval; |
|
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
307 l -> addrset = 2; |
| 0 | 308 } |
|
54
360d53062bb9
Fixed typo in instruction table and added END directive
lost
parents:
53
diff
changeset
|
309 } |
| 0 | 310 |
| 56 | 311 |
| 312 OPFUNC(pseudo_align) | |
| 0 | 313 { |
| 56 | 314 int rval; |
| 315 lwasm_expr_stack_t *s; | |
| 0 | 316 int cn; |
| 317 | |
| 56 | 318 if (as -> passnum == 2) |
| 0 | 319 { |
| 56 | 320 while (as -> addr < l -> symaddr) |
| 321 lwasm_emit(as, l, 0); | |
| 322 return; | |
| 323 } | |
| 324 | |
| 325 s = lwasm_evaluate_expr(as, l, *p, NULL); | |
| 326 if (!s) | |
| 327 { | |
| 328 register_error(as, l, 1, "Bad expression"); | |
| 0 | 329 return; |
| 330 } | |
| 56 | 331 if (!lwasm_expr_is_constant(s)) |
| 332 { | |
| 333 register_error(as, l, 1, "Illegal incomplete reference (pass 1)"); | |
| 334 } | |
| 335 rval = lwasm_expr_get_value(s); | |
| 336 lwasm_expr_stack_free(s); | |
| 0 | 337 |
| 56 | 338 if (rval < 1) |
| 0 | 339 { |
| 56 | 340 register_error(as, l, 1, "Illegal alignment %d", rval); |
| 341 return; | |
| 0 | 342 } |
| 56 | 343 |
| 344 cn = l -> codeaddr % rval; | |
| 345 if (cn) | |
| 346 cn = rval - cn; | |
| 347 | |
| 348 while (cn--) | |
| 349 { | |
| 350 lwasm_emit(as, l, 0); | |
| 351 } | |
| 352 l -> symaddr = as -> addr; | |
| 0 | 353 } |
| 56 | 354 |
| 50 | 355 OPFUNC(pseudo_equ) |
| 0 | 356 { |
| 50 | 357 int rval; |
| 52 | 358 |
| 359 // equ is not needed to be processed on pass 2 | |
| 360 if (as -> passnum != 1) | |
| 361 return; | |
| 362 | |
| 50 | 363 if (l -> sym == NULL) |
| 0 | 364 { |
| 50 | 365 register_error(as, l, 1, "No symbol specified"); |
| 0 | 366 return; |
| 367 } | |
| 50 | 368 |
|
63
d85ba47b1e8f
Moved symbol registration so symbols that are in skipped code do not get registered and so EQU/SET can do their own registration
lost
parents:
57
diff
changeset
|
369 if (lwasm_expr_result(as, l, p, EXPR_PASS1CONST, &rval) < 0) |
| 50 | 370 rval = 0; |
|
63
d85ba47b1e8f
Moved symbol registration so symbols that are in skipped code do not get registered and so EQU/SET can do their own registration
lost
parents:
57
diff
changeset
|
371 |
| 50 | 372 l -> symaddr = rval & 0xFFFF; |
| 373 l -> addrset = 2; | |
|
63
d85ba47b1e8f
Moved symbol registration so symbols that are in skipped code do not get registered and so EQU/SET can do their own registration
lost
parents:
57
diff
changeset
|
374 |
|
d85ba47b1e8f
Moved symbol registration so symbols that are in skipped code do not get registered and so EQU/SET can do their own registration
lost
parents:
57
diff
changeset
|
375 lwasm_register_symbol(as, l, l -> sym, rval); |
| 0 | 376 } |
|
63
d85ba47b1e8f
Moved symbol registration so symbols that are in skipped code do not get registered and so EQU/SET can do their own registration
lost
parents:
57
diff
changeset
|
377 |
|
d85ba47b1e8f
Moved symbol registration so symbols that are in skipped code do not get registered and so EQU/SET can do their own registration
lost
parents:
57
diff
changeset
|
378 OPFUNC(pseudo_set) |
|
d85ba47b1e8f
Moved symbol registration so symbols that are in skipped code do not get registered and so EQU/SET can do their own registration
lost
parents:
57
diff
changeset
|
379 { |
|
d85ba47b1e8f
Moved symbol registration so symbols that are in skipped code do not get registered and so EQU/SET can do their own registration
lost
parents:
57
diff
changeset
|
380 } |
|
d85ba47b1e8f
Moved symbol registration so symbols that are in skipped code do not get registered and so EQU/SET can do their own registration
lost
parents:
57
diff
changeset
|
381 |
| 50 | 382 /* |
| 0 | 383 void pseudo_set(asmstate_t *as, sourceline_t *cl, char **optr) |
| 384 { | |
| 385 int rval, v1; | |
| 386 | |
| 387 if (cl -> hassym == 0) | |
| 388 { | |
| 389 errorp1(ERR_NOSYM); | |
| 390 return; | |
| 391 } | |
| 392 rval = eval_expr(as, cl, optr, &v1); | |
| 393 // eval_expr returns -1 if there was a forward ref | |
| 394 // or -2 if the expr was invalid | |
| 395 if (rval == -2) | |
| 396 { | |
| 397 // carp | |
| 398 errorp1(ERR_FORWARD); | |
| 399 } | |
| 400 if (rval < 0) | |
| 401 { | |
| 402 // remove symbol ref | |
| 403 cl -> hassym = 0; | |
| 404 // mark as a "comment" so it isn't processed next time | |
| 405 cl -> opcode = -1; | |
| 406 return; | |
| 407 } | |
| 408 cl -> code_symloc = v1; | |
| 409 cl -> isset = 1; | |
| 410 cl -> isequ = 1; | |
| 411 cl -> symaddr = v1 & 0xFFFF; | |
| 412 } | |
| 413 | |
| 414 void pseudo_setdp(asmstate_t *as, sourceline_t *cl, char **optr) | |
| 415 { | |
| 416 int rval, v1; | |
| 417 | |
| 418 if (cl -> hassym) | |
| 419 { | |
| 420 register_error(as, cl, ERR_SYM); | |
| 421 cl -> hassym = 0; | |
| 422 return; | |
| 423 } | |
| 424 else | |
| 425 { | |
| 426 rval = eval_expr(as, cl, optr, &v1); | |
| 427 if (rval == -1) | |
| 428 { | |
| 429 errorp1(ERR_FORWARD); | |
| 430 } | |
| 431 if (rval < 0) | |
| 432 { | |
| 433 cl -> opcode = -1; | |
| 434 return; | |
| 435 } | |
| 436 } | |
| 437 // setdp needs to resolve properly on pass 2 | |
| 438 if (v1 > 0xff || v1 < 0) | |
| 439 { | |
| 440 errorp1(ERR_OVERFLOW); | |
| 441 } | |
| 442 as -> dpval = v1 & 0xff; | |
| 443 cl -> dpval = v1 & 0xff; | |
| 444 cl -> issetdp = 1; | |
| 445 cl -> numcodebytes = 0; | |
| 446 //printf("%s\n", "SETDP2"); | |
| 447 } | |
| 56 | 448 */ |
| 0 | 449 |
| 56 | 450 OPFUNC(pseudo_fcc) |
| 451 { | |
| 0 | 452 int delim = 0; |
| 453 | |
| 56 | 454 delim = **p; |
| 0 | 455 if (!delim) |
| 456 { | |
| 56 | 457 register_error(as, l, 1, "Bad operand"); |
| 458 return; | |
| 0 | 459 } |
| 56 | 460 *p += 1; |
| 461 while (**p && **p != delim) | |
| 0 | 462 { |
| 56 | 463 lwasm_emit(as, l, **p); |
| 464 (*p)++; | |
| 0 | 465 } |
| 56 | 466 if (**p) |
| 467 (*p)++; | |
| 0 | 468 } |
| 469 | |
| 56 | 470 |
| 471 OPFUNC(pseudo_fcs) | |
| 0 | 472 { |
| 473 int delim = 0; | |
| 56 | 474 |
| 475 delim = **p; | |
| 0 | 476 if (!delim) |
| 477 { | |
| 56 | 478 register_error(as, l, 1, "Bad operand"); |
| 479 return; | |
| 0 | 480 } |
| 56 | 481 *p += 1; |
| 482 while (**p && **p != delim) | |
| 0 | 483 { |
| 56 | 484 if (!*((*p) + 1) || *((*p) + 1) == delim) |
| 485 lwasm_emit(as, l, **p | 0x80); | |
| 486 else | |
| 487 lwasm_emit(as, l, **p); | |
| 488 (*p)++; | |
| 0 | 489 } |
| 56 | 490 if (**p) |
| 491 (*p)++; | |
| 0 | 492 } |
| 493 | |
| 56 | 494 OPFUNC(pseudo_fcn) |
| 0 | 495 { |
| 496 int delim = 0; | |
| 497 | |
| 56 | 498 delim = **p; |
| 0 | 499 if (!delim) |
| 500 { | |
| 56 | 501 register_error(as, l, 1, "Bad operand"); |
| 502 return; | |
| 0 | 503 } |
| 56 | 504 *p += 1; |
| 505 while (**p && **p != delim) | |
| 0 | 506 { |
| 56 | 507 lwasm_emit(as, l, **p); |
| 508 (*p)++; | |
| 0 | 509 } |
| 56 | 510 if (**p) |
| 511 (*p)++; | |
| 512 lwasm_emit(as, l, 0); | |
| 0 | 513 } |
| 56 | 514 |
| 515 OPFUNC(pseudo_fcb) | |
| 0 | 516 { |
| 56 | 517 int v1; |
| 0 | 518 |
| 519 fcb_again: | |
| 56 | 520 if (lwasm_expr_result(as, l, p, EXPR_PASS2CONST | EXPR_BYTE, &v1) < 0) |
| 521 return; | |
| 522 | |
| 523 lwasm_emit(as, l, v1); | |
| 524 if (**p == ',') | |
| 0 | 525 { |
| 56 | 526 (*p)++; |
| 0 | 527 goto fcb_again; |
| 528 } | |
| 529 } | |
| 530 | |
| 56 | 531 OPFUNC(pseudo_fdb) |
| 0 | 532 { |
| 56 | 533 int v1; |
| 0 | 534 |
| 535 fdb_again: | |
| 56 | 536 if (lwasm_expr_result(as, l, p, EXPR_PASS2CONST, &v1) < 0) |
| 537 return; | |
| 538 | |
| 539 lwasm_emit(as, l, v1 >> 8); | |
| 540 lwasm_emit(as, l, v1 & 0xff); | |
| 541 if (**p == ',') | |
| 0 | 542 { |
| 56 | 543 (*p)++; |
| 0 | 544 goto fdb_again; |
| 545 } | |
| 546 } | |
| 547 | |
| 56 | 548 OPFUNC(pseudo_fqb) |
| 0 | 549 { |
| 56 | 550 int v1; |
| 551 | |
| 0 | 552 fqb_again: |
| 56 | 553 if (lwasm_expr_result(as, l, p, EXPR_PASS2CONST, &v1) < 0) |
| 554 return; | |
| 555 | |
| 556 lwasm_emit(as, l, v1 >> 24); | |
| 557 lwasm_emit(as, l, v1 >> 16); | |
| 558 lwasm_emit(as, l, v1 >> 8); | |
| 559 lwasm_emit(as, l, v1 & 0xff); | |
| 560 if (**p == ',') | |
| 0 | 561 { |
| 56 | 562 (*p)++; |
| 0 | 563 goto fqb_again; |
| 564 } | |
| 565 } | |
| 566 | |
| 567 // don't need to do anything if we are executing one of these | |
| 57 | 568 OPFUNC(pseudo_endc) |
| 0 | 569 { |
| 57 | 570 if (as -> skipcond && !(as -> skipmacro)) |
| 571 { | |
| 572 as -> skipcount -= 1; | |
| 573 if (as -> skipcount <= 0) | |
| 574 { | |
| 575 as -> skipcond = 0; | |
| 576 } | |
| 577 } | |
| 0 | 578 return; |
| 579 } | |
| 580 | |
| 581 // if "else" executes, we must be going into an "ignore" state | |
| 57 | 582 OPFUNC(pseudo_else) |
| 0 | 583 { |
| 57 | 584 if (as -> skipmacro) |
| 585 return; | |
| 586 | |
| 587 if (as -> skipcond) | |
| 588 { | |
| 589 if (as -> skipcount == 1) | |
| 590 { | |
| 591 as -> skipcount = 0; | |
| 592 as -> skipcond = 0; | |
| 593 } | |
| 594 return; | |
| 595 } | |
| 596 | |
| 0 | 597 as -> skipcond = 1; |
| 598 as -> skipcount = 1; | |
| 599 } | |
| 600 | |
| 57 | 601 OPFUNC(pseudo_ifne) |
| 0 | 602 { |
| 603 int v1; | |
| 604 int rval; | |
| 57 | 605 |
| 606 if (as -> skipcond && !(as -> skipmacro)) | |
| 0 | 607 { |
| 57 | 608 as -> skipcount++; |
| 609 return; | |
| 610 } | |
| 611 | |
| 612 rval = lwasm_expr_result(as, l, p, EXPR_PASS1CONST, &v1); | |
| 613 if (rval < 0) | |
| 614 return; | |
| 615 if (!v1) | |
| 616 { | |
| 617 as -> skipcond = 1; | |
| 618 as -> skipcount = 1; | |
| 0 | 619 } |
| 620 } | |
| 57 | 621 |
| 622 OPFUNC(pseudo_ifeq) | |
| 0 | 623 { |
| 624 int v1; | |
| 625 int rval; | |
| 57 | 626 |
| 627 if (as -> skipcond && !(as -> skipmacro)) | |
| 0 | 628 { |
| 57 | 629 as -> skipcount++; |
| 630 return; | |
| 0 | 631 } |
| 57 | 632 |
| 633 rval = lwasm_expr_result(as, l, p, EXPR_PASS1CONST, &v1); | |
| 634 if (rval < 0) | |
| 635 return; | |
| 636 if (v1) | |
| 0 | 637 { |
| 57 | 638 as -> skipcond = 1; |
| 639 as -> skipcount = 1; | |
| 0 | 640 } |
| 641 } | |
| 57 | 642 |
| 643 OPFUNC(pseudo_iflt) | |
| 0 | 644 { |
| 645 int v1; | |
| 646 int rval; | |
| 57 | 647 |
| 648 if (as -> skipcond && !(as -> skipmacro)) | |
| 0 | 649 { |
| 57 | 650 as -> skipcount++; |
| 651 return; | |
| 0 | 652 } |
| 57 | 653 |
| 654 rval = lwasm_expr_result(as, l, p, EXPR_PASS1CONST, &v1); | |
| 655 if (rval < 0) | |
| 656 return; | |
| 657 if (v1 >= 0) | |
| 0 | 658 { |
| 57 | 659 as -> skipcond = 1; |
| 660 as -> skipcount = 1; | |
| 0 | 661 } |
| 662 } | |
| 57 | 663 |
| 664 OPFUNC(pseudo_ifle) | |
| 0 | 665 { |
| 666 int v1; | |
| 667 int rval; | |
| 57 | 668 |
| 669 if (as -> skipcond && !(as -> skipmacro)) | |
| 0 | 670 { |
| 57 | 671 as -> skipcount++; |
| 672 return; | |
| 0 | 673 } |
| 57 | 674 |
| 675 rval = lwasm_expr_result(as, l, p, EXPR_PASS1CONST, &v1); | |
| 676 if (rval < 0) | |
| 677 return; | |
| 678 if (v1 > 0) | |
| 0 | 679 { |
| 57 | 680 as -> skipcond = 1; |
| 681 as -> skipcount = 1; | |
| 0 | 682 } |
| 683 } | |
| 57 | 684 |
| 685 OPFUNC(pseudo_ifgt) | |
| 0 | 686 { |
| 687 int v1; | |
| 688 int rval; | |
| 57 | 689 |
| 690 if (as -> skipcond && !(as -> skipmacro)) | |
| 0 | 691 { |
| 57 | 692 as -> skipcount++; |
| 693 return; | |
| 0 | 694 } |
| 57 | 695 |
| 696 rval = lwasm_expr_result(as, l, p, EXPR_PASS1CONST, &v1); | |
| 697 if (rval < 0) | |
| 698 return; | |
| 699 if (v1 <= 0) | |
| 0 | 700 { |
| 57 | 701 as -> skipcond = 1; |
| 702 as -> skipcount = 1; | |
| 0 | 703 } |
| 704 } | |
| 57 | 705 |
| 706 OPFUNC(pseudo_ifge) | |
| 0 | 707 { |
| 708 int v1; | |
| 709 int rval; | |
| 57 | 710 |
| 711 if (as -> skipcond && !(as -> skipmacro)) | |
| 0 | 712 { |
| 57 | 713 as -> skipcount++; |
| 714 return; | |
| 0 | 715 } |
| 57 | 716 |
| 717 rval = lwasm_expr_result(as, l, p, EXPR_PASS1CONST, &v1); | |
| 718 if (rval < 0) | |
| 719 return; | |
| 720 if (v1 < 0) | |
| 0 | 721 { |
| 57 | 722 as -> skipcond = 1; |
| 723 as -> skipcount = 1; | |
| 0 | 724 } |
| 725 } | |
| 726 | |
| 56 | 727 OPFUNC(pseudo_error) |
| 0 | 728 { |
| 56 | 729 register_error(as, l, 1, "User error: %s", *p); |
| 0 | 730 } |
| 56 | 731 |