Mercurial > hg > forks > dxa
annotate scan.c @ 2:ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Tue, 24 Feb 2015 20:28:57 +0200 |
| parents | cfcae2ef1c2b |
| children | 987c90810883 |
| rev | line source |
|---|---|
| 0 | 1 /*\ |
| 2 * dxa v0.1.1 -- symbolic 65xx disassembler | |
| 3 * | |
| 4 * Copyright (C) 1993, 1994 Marko M\"akel\"a | |
| 5 * | |
| 6 * This program is free software; you can redistribute it and/or modify | |
| 7 * it under the terms of the GNU General Public License as published by | |
| 8 * the Free Software Foundation; either version 2 of the License, or | |
| 9 * (at your option) any later version. | |
| 10 * | |
| 11 * This program is distributed in the hope that it will be useful, | |
| 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 * GNU General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU General Public License | |
| 17 * along with this program; if not, write to the Free Software | |
| 18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 19 * | |
| 20 * Contacting the author: | |
| 21 * | |
| 22 * Via Internet E-mail: | |
| 23 * <Marko.Makela@FTP.FUNET.FI> | |
| 24 * | |
| 25 * Via Snail Mail: | |
| 26 * Marko M\"akel\"a | |
| 27 * Sillitie 10 A | |
| 28 * FIN-01480 VANTAA | |
| 29 * Finland | |
| 30 \*/ | |
| 31 | |
| 32 #define _SCAN_C_ | |
| 33 #include <stdio.h> | |
| 34 #include "proto.h" | |
| 35 #include "opcodes.h" | |
| 36 #include "options.h" | |
| 37 | |
| 38 | |
| 39 int ScanSure (ADDR_T scanstart) | |
| 40 { | |
| 41 ADDR_T address, addr; | |
| 42 opcodes *instr; | |
| 43 | |
| 44 unsigned int size, counter; | |
| 45 | |
| 46 for (address = scanstart;; address += size) { | |
| 47 if (GetMemFlag (address)) /* rest of routine not valid */ | |
| 48 return ((Options & M_DATA_BLOCKS) == O_DBL_STRICT); | |
| 49 | |
| 50 instr = &opset[Memory[address]]; | |
| 51 | |
| 52 if (!instr->mnemonic) /* invalid opcode */ | |
| 53 return ((Options & M_DATA_BLOCKS) == O_DBL_STRICT); | |
| 54 | |
| 55 size = sizes[instr->admode]; | |
| 56 if ((ADDR_T)(address + size - StartAddress) > | |
| 57 (ADDR_T)(EndAddress - StartAddress)) | |
| 58 break; /* end of program code encountered */ | |
| 59 | |
| 60 switch (GetMemType (address)) { | |
| 61 case MEM_INSTRUCTION: | |
| 62 return 0; /* The rest of the routine has already been processed. */ | |
| 63 | |
| 64 case MEM_DATA: | |
| 65 AddEntry (address, scanstart, WRN_INSTR_WRITTEN_TO); | |
| 66 break; | |
| 67 | |
| 68 case MEM_PARAMETER: | |
| 69 AddEntry (address, scanstart, WRN_PARAM_JUMPED_TO); | |
| 70 } | |
| 71 | |
| 72 SetMemType (address, MEM_INSTRUCTION); | |
| 73 | |
| 74 for (counter = size, addr = address + 1; --counter; addr++) | |
| 75 switch GetMemType(addr) { | |
| 76 case MEM_INSTRUCTION: | |
| 77 AddEntry (addr, scanstart, WRN_PARAM_JUMPED_TO); | |
| 78 break; | |
| 79 case MEM_DATA: | |
| 80 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO); | |
| 81 /* fall through */ | |
| 82 default: | |
| 83 SetMemType (addr, MEM_PARAMETER); | |
| 84 } | |
| 85 | |
| 86 if (instr->admode == zrel) { | |
| 87 addr = Memory[(ADDR_T)(address + 1)]; | |
| 88 | |
| 89 if (GetMemFlag (addr) && GetMemType (addr) == MEM_UNPROCESSED) | |
| 90 return (Options & M_DATA_BLOCKS) == O_DBL_STRICT; | |
| 91 | |
| 92 if (((ADDR_T)(addr - StartAddress) < | |
| 93 (ADDR_T)(EndAddress - StartAddress) || | |
| 94 Options & B_LBL_ALWAYS)) { | |
| 95 PutLabel (addr); | |
| 96 PutLowByte (addr); | |
| 97 PutHighByte (addr); | |
| 98 } | |
| 99 | |
| 100 addr = (ADDR_T)((int)(char)Memory[(ADDR_T)(address + 2)] + | |
| 101 address + size); | |
| 102 goto IsJump; | |
| 103 } | |
| 104 | |
| 105 if (instr->admode == rel) { | |
| 106 addr = (ADDR_T)((int)(char)Memory[(ADDR_T)(address + 1)] + | |
| 107 address + size); | |
| 108 | |
| 109 goto IsJump; | |
| 110 } | |
| 111 if ((instr->mnemonic == S_JSR || instr->mnemonic == S_JMP) && | |
| 112 instr->admode == abso) { | |
| 113 addr = Memory[(ADDR_T)(address + 1)] + | |
| 114 (Memory[(ADDR_T)(address + 2)] << 8); | |
| 115 | |
| 116 IsJump: | |
| 117 if (GetMemFlag (addr)) | |
| 118 return ((Options & M_DATA_BLOCKS) == O_DBL_STRICT); | |
| 119 | |
| 120 if ((ADDR_T)(addr - StartAddress) < | |
| 121 (ADDR_T)(EndAddress - StartAddress)) { | |
| 122 if (GetMemType (addr) == MEM_INSTRUCTION) { | |
| 123 PutLabel (addr); | |
| 124 PutLowByte (addr); | |
| 125 PutHighByte (addr); | |
| 126 } | |
| 127 else | |
| 128 AddEntry (addr, scanstart, Options & B_SCEPTIC && | |
| 129 instr->admode == rel && instr->mnemonic != S_BRA ? | |
| 130 RTN_POTENTIAL : RTN_SURE); | |
| 131 } | |
| 132 else if (Options & B_LBL_ALWAYS) { | |
| 133 PutLabel (addr); | |
| 134 PutLowByte (addr); | |
| 135 PutHighByte (addr); | |
| 136 } | |
| 137 | |
| 138 if ((Options & M_DATA_BLOCKS) == O_DBL_STRICT && | |
| 139 Options & B_JMP_STRICT && | |
| 140 addr == address && instr->mnemonic != S_BVC) | |
| 141 return 1; | |
| 142 } | |
| 143 | |
| 144 switch (instr->mnemonic) { | |
| 145 case S_JMP: | |
| 146 addr = Memory[(ADDR_T)(address + 1)] + | |
| 147 (Memory[(ADDR_T)(address + 2)] << 8); | |
| 148 | |
| 149 if (instr->admode == iabs && (ADDR_T)(addr - StartAddress) < | |
| 150 (ADDR_T)(EndAddress - StartAddress)) { | |
| 151 PutLabel (addr); | |
| 152 PutLowByte (addr); | |
| 153 PutHighByte (addr); | |
| 154 | |
| 155 /* Mark pointer as data. */ | |
| 156 switch (GetMemType (addr)) { | |
| 157 case MEM_UNPROCESSED: | |
| 158 SetMemType (addr, MEM_DATA); | |
| 159 break; | |
| 160 case MEM_INSTRUCTION: | |
| 161 AddEntry (addr, scanstart, WRN_INSTR_WRITTEN_TO); | |
| 162 break; | |
| 163 case MEM_PARAMETER: | |
| 164 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO); | |
| 165 break; | |
| 166 } | |
| 167 | |
| 168 addr++; | |
| 169 | |
| 170 if ((ADDR_T)(addr - StartAddress) < | |
| 171 (ADDR_T)(EndAddress - StartAddress)) | |
| 172 switch (GetMemType (addr)) { | |
| 173 case MEM_UNPROCESSED: | |
| 174 SetMemType (addr, MEM_DATA); | |
| 175 break; | |
| 176 case MEM_INSTRUCTION: | |
| 177 AddEntry (addr, scanstart, WRN_INSTR_WRITTEN_TO); | |
| 178 break; | |
| 179 case MEM_PARAMETER: | |
| 180 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO); | |
| 181 break; | |
| 182 } | |
| 183 } | |
| 184 else if (Options & B_LBL_ALWAYS) { | |
| 185 PutLabel (addr); | |
| 186 PutLowByte (addr); | |
| 187 PutHighByte (addr); | |
| 188 } | |
| 189 case S_BRA: | |
| 190 case S_RTS: | |
| 191 case S_RTI: | |
| 192 return 0; | |
| 193 | |
| 194 case S_BRK: | |
| 195 case S_STP: | |
| 196 return (Options & M_DATA_BLOCKS) == O_DBL_STRICT && | |
| 197 Options & B_BRK_REJECT; | |
| 198 } | |
| 199 | |
| 200 if (instr->admode == rel) { | |
| 201 if ((ADDR_T)(addr - scanstart) >= (ADDR_T)(address - scanstart) | |
| 202 || GetMemType (addr) != MEM_INSTRUCTION) { | |
| 203 if (GetMemType (address + size) != MEM_INSTRUCTION) | |
| 204 AddEntry (address + size, scanstart, RTN_POTENTIAL); | |
| 205 | |
| 206 return 0; | |
| 207 } | |
| 208 | |
| 209 continue; | |
| 210 } | |
| 211 | |
| 212 if (instr->mnemonic == S_JSR) { | |
| 213 if (!(Options & B_STK_BALANCE)) { | |
| 214 if (GetMemType (address + size) != MEM_INSTRUCTION) | |
| 215 AddEntry (address + size, scanstart, RTN_POTENTIAL); | |
| 216 | |
| 217 return 0; | |
| 218 } | |
| 219 | |
| 220 continue; | |
| 221 } | |
| 222 | |
| 223 switch (size) { | |
| 224 case 2: | |
| 225 addr = Memory[(ADDR_T)(address + 1)]; | |
| 226 break; | |
| 227 case 3: | |
| 228 addr = Memory[(ADDR_T)(address + 1)] + | |
| 229 (Memory[(ADDR_T)(address + 2)] << 8); | |
| 230 break; | |
| 231 } | |
| 232 | |
| 233 if (types[instr->admode] != impimm && GetMemFlag (addr) && | |
| 234 GetMemType (addr) == MEM_UNPROCESSED) | |
| 235 return (Options & M_DATA_BLOCKS) == O_DBL_STRICT; | |
| 236 | |
| 237 if (types[instr->admode] != impimm && | |
| 238 ((ADDR_T)(addr - StartAddress) < | |
| 239 (ADDR_T)(EndAddress - StartAddress) || | |
| 240 Options & B_LBL_ALWAYS)) { | |
| 241 PutLabel (addr); | |
| 242 PutLowByte (addr); | |
| 243 PutHighByte (addr); | |
| 244 } | |
| 245 | |
| 246 if (types[instr->admode] != other && types[instr->admode] != impimm) { | |
| 247 if ((ADDR_T)(addr - StartAddress) < | |
| 248 (ADDR_T)(EndAddress - StartAddress)) { | |
| 249 switch (GetMemType (addr)) { | |
| 250 case MEM_UNPROCESSED: | |
| 251 SetMemType (addr, MEM_DATA); | |
| 252 break; | |
| 253 case MEM_INSTRUCTION: | |
| 254 AddEntry (addr, scanstart, WRN_INSTR_WRITTEN_TO); | |
| 255 break; | |
| 256 case MEM_PARAMETER: | |
| 257 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO); | |
| 258 break; | |
| 259 } | |
| 260 | |
| 261 if (types[instr->admode] == absindir) { /* indirect mode */ | |
| 262 addr++; /* set flags for upper vector byte */ | |
| 263 | |
| 264 if ((ADDR_T)(addr - StartAddress) < | |
| 265 (ADDR_T)(EndAddress - StartAddress)) | |
| 266 switch (GetMemType (addr)) { | |
| 267 case MEM_UNPROCESSED: | |
| 268 SetMemType (addr, MEM_DATA); | |
| 269 break; | |
| 270 case MEM_INSTRUCTION: | |
| 271 AddEntry (addr, scanstart, WRN_INSTR_WRITTEN_TO); | |
| 272 break; | |
| 273 case MEM_PARAMETER: | |
| 274 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO); | |
| 275 break; | |
| 276 } | |
| 277 } | |
| 278 } | |
| 279 } | |
| 280 } | |
| 281 | |
| 282 /* end of program (unexpectedly) encountered */ | |
| 283 | |
| 284 if (Options & O_DBL_STRICT) return 1; | |
| 285 | |
| 286 AddEntry (EndAddress, scanstart, WRN_RTN_TRUNCATED); | |
| 287 return 0; | |
| 288 } | |
| 289 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
290 |
| 0 | 291 int ScanPotential (ADDR_T scanstart) |
| 292 { | |
| 293 ADDR_T address, addr; | |
| 294 opcodes *instr; | |
| 295 | |
| 296 unsigned int size, counter; | |
| 297 | |
| 298 for (address = scanstart;; address += size) { | |
| 299 if (GetMemFlag (address)) /* rest of routine not valid */ | |
| 300 return 1; | |
| 301 | |
| 302 instr = &opset[Memory[address]]; | |
| 303 | |
| 304 if (!instr->mnemonic) { /* invalid opcode */ | |
| 305 SetMemFlag (address); | |
| 306 | |
| 307 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 308 SetMemType (address, MEM_DATA); | |
| 309 return 1; | |
| 310 } | |
| 311 | |
| 312 size = sizes[instr->admode]; | |
| 313 if ((ADDR_T)(address + size - StartAddress) > | |
| 314 (ADDR_T)(EndAddress - StartAddress)) | |
| 315 break; /* end of program code encountered */ | |
| 316 | |
| 317 if (GetMemType (address) == MEM_INSTRUCTION) | |
| 318 return 0; /* The rest of the routine has already been processed. */ | |
| 319 | |
| 320 if (instr->admode == zrel) { | |
| 321 addr = Memory[(ADDR_T)(address + 1)]; | |
| 322 | |
| 323 if (GetMemFlag (addr) && GetMemType (addr) == MEM_UNPROCESSED) | |
| 324 goto Failure; | |
| 325 | |
| 326 if (((ADDR_T)(addr - StartAddress) < | |
| 327 (ADDR_T)(EndAddress - StartAddress) || | |
| 328 Options & B_LBL_ALWAYS)) | |
| 329 AddEntry (addr, scanstart, WRN_I_LABEL_NEEDED | WRN_B_TEMPORARY); | |
| 330 | |
| 331 addr = (ADDR_T)((int)(char)Memory[(ADDR_T)(address + 1)] + | |
| 332 address + size); | |
| 333 | |
| 334 goto IsJump; | |
| 335 } | |
| 336 | |
| 337 if (instr->admode == rel) { | |
| 338 addr = (ADDR_T)((int)(char)Memory[(ADDR_T)(address + 1)] + | |
| 339 address + size); | |
| 340 | |
| 341 goto IsJump; | |
| 342 } | |
| 343 | |
| 344 switch (size) { | |
| 345 case 2: | |
| 346 addr = Memory[(ADDR_T)(address + 1)]; | |
| 347 break; | |
| 348 case 3: | |
| 349 addr = Memory[(ADDR_T)(address + 1)] + | |
| 350 (Memory[(ADDR_T)(address + 2)] << 8); | |
| 351 break; | |
| 352 default: | |
| 353 addr = address; | |
| 354 } | |
| 355 | |
| 356 if (types[instr->admode] != impimm && GetMemFlag (addr) && | |
| 357 GetMemType (addr) == MEM_UNPROCESSED) { | |
| 358 Failure: | |
| 359 SetMemFlag (address); | |
| 360 | |
| 361 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 362 SetMemType (address, MEM_DATA); | |
| 363 return 1; | |
| 364 } | |
| 365 | |
| 366 if ((instr->mnemonic == S_JSR || instr->mnemonic == S_JMP) && | |
| 367 instr->admode == abso) { | |
| 368 IsJump: | |
| 369 if (GetMemFlag (addr)) { | |
| 370 SetMemFlag (address); | |
| 371 | |
| 372 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 373 SetMemType (address, MEM_DATA); | |
| 374 return 1; | |
| 375 } | |
| 376 | |
| 377 if ((ADDR_T)(addr - StartAddress) < | |
| 378 (ADDR_T)(EndAddress - StartAddress)) | |
| 379 AddEntry (addr, scanstart, Options & B_SCEPTIC && | |
| 380 instr->admode == rel && instr->mnemonic != S_BRA ? | |
| 381 RTN_SUSP_POT : RTN_SUSPECTED); | |
| 382 else if (Options & B_LBL_ALWAYS) | |
| 383 AddEntry (addr, scanstart, WRN_I_LABEL_NEEDED | WRN_B_TEMPORARY); | |
| 384 | |
| 385 if (Options & B_JMP_STRICT && addr == address && | |
| 386 instr->mnemonic != S_BVC) { | |
| 387 SetMemFlag (address); | |
| 388 | |
| 389 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 390 SetMemType (address, MEM_DATA); | |
| 391 return 1; | |
| 392 } | |
| 393 } | |
| 394 | |
| 395 switch (instr->mnemonic) { | |
| 396 case S_BRK: | |
| 397 case S_STP: | |
| 398 if (Options & B_BRK_REJECT) { | |
| 399 SetMemFlag (address); | |
| 400 | |
| 401 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 402 SetMemType (address, MEM_DATA); | |
| 403 return 1; | |
| 404 } | |
| 405 } | |
| 406 | |
| 407 if (!GetMemFlag (address)) | |
| 408 switch (GetMemType (address)) { | |
| 409 case MEM_DATA: | |
| 410 AddEntry (address, scanstart, WRN_INSTR_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 411 break; | |
| 412 | |
| 413 case MEM_PARAMETER: | |
| 414 AddEntry (address, scanstart, WRN_PARAM_JUMPED_TO | WRN_B_TEMPORARY); | |
| 415 } | |
| 416 | |
| 417 SetMemType (address, MEM_INSTRUCTION); | |
| 418 | |
| 419 for (counter = size, addr = address + 1; --counter; addr++) | |
| 420 switch (GetMemType (addr)) { | |
| 421 case MEM_INSTRUCTION: | |
| 422 AddEntry (addr, scanstart, WRN_PARAM_JUMPED_TO | WRN_B_TEMPORARY); | |
| 423 break; | |
| 424 case MEM_DATA: | |
| 425 if (!GetMemFlag (addr)) | |
| 426 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 427 break; | |
| 428 default: | |
| 429 SetMemType (addr, MEM_PARAMETER); | |
| 430 } | |
| 431 | |
| 432 switch (instr->mnemonic) { | |
| 433 case S_BRK: | |
| 434 case S_STP: | |
| 435 case S_RTS: | |
| 436 case S_BRA: | |
| 437 case S_RTI: | |
| 438 return 0; | |
| 439 | |
| 440 case S_JMP: | |
| 441 addr = Memory[(ADDR_T)(address + 1)] + | |
| 442 (Memory[(ADDR_T)(address + 2)] << 8); | |
| 443 | |
| 444 if (instr->admode == iabs && (ADDR_T)(addr - StartAddress) < | |
| 445 (ADDR_T)(EndAddress - StartAddress)) { | |
| 446 AddEntry (addr, scanstart, WRN_I_LABEL_NEEDED | WRN_B_TEMPORARY); | |
| 447 | |
| 448 /* Mark pointer as data. */ | |
| 449 switch (GetMemType (addr)) { | |
| 450 case MEM_UNPROCESSED: | |
| 451 AddEntry (addr, scanstart, WRN_I_ACCESSED | WRN_B_TEMPORARY); | |
| 452 break; | |
| 453 case MEM_INSTRUCTION: | |
| 454 AddEntry (addr, scanstart, WRN_INSTR_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 455 break; | |
| 456 case MEM_PARAMETER: | |
| 457 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 458 break; | |
| 459 } | |
| 460 | |
| 461 addr++; | |
| 462 | |
| 463 if ((ADDR_T)(addr - StartAddress) < | |
| 464 (ADDR_T)(EndAddress - StartAddress)) | |
| 465 switch (GetMemType (addr)) { | |
| 466 case MEM_UNPROCESSED: | |
| 467 AddEntry (addr, scanstart, WRN_I_ACCESSED | WRN_B_TEMPORARY); | |
| 468 break; | |
| 469 case MEM_INSTRUCTION: | |
| 470 AddEntry (addr, scanstart, | |
| 471 WRN_INSTR_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 472 break; | |
| 473 case MEM_PARAMETER: | |
| 474 AddEntry (addr, scanstart, | |
| 475 WRN_PARAM_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 476 break; | |
| 477 } | |
| 478 } | |
| 479 else if (Options & B_LBL_ALWAYS) | |
| 480 AddEntry (addr, scanstart, WRN_I_LABEL_NEEDED | WRN_B_TEMPORARY); | |
| 481 | |
| 482 return 0; | |
| 483 } | |
| 484 | |
| 485 if (instr->admode == rel && | |
| 486 GetMemType (address + size) != MEM_INSTRUCTION) { | |
| 487 AddEntry (address + size, scanstart, RTN_SUSP_POT); | |
| 488 | |
| 489 return 0; | |
| 490 } | |
| 491 | |
| 492 if (instr->mnemonic == S_JSR) { | |
| 493 if (!(Options & B_STK_BALANCE)) { | |
| 494 if (GetMemType (address + size) != MEM_INSTRUCTION) | |
| 495 AddEntry (address + size, scanstart, RTN_SUSP_POT); | |
| 496 | |
| 497 return 0; | |
| 498 } | |
| 499 | |
| 500 continue; | |
| 501 } | |
| 502 | |
| 503 switch (size) { | |
| 504 case 2: | |
| 505 addr = Memory[(ADDR_T)(address + 1)]; | |
| 506 break; | |
| 507 case 3: | |
| 508 addr = Memory[(ADDR_T)(address + 1)] + | |
| 509 (Memory[(ADDR_T)(address + 2)] << 8); | |
| 510 break; | |
| 511 } | |
| 512 | |
| 513 if (types[instr->admode] != impimm && | |
| 514 ((ADDR_T)(addr - StartAddress) < | |
| 515 (ADDR_T)(EndAddress - StartAddress) || | |
| 516 Options & B_LBL_ALWAYS)) | |
| 517 AddEntry (addr, scanstart, WRN_I_LABEL_NEEDED | WRN_B_TEMPORARY); | |
| 518 | |
| 519 if (types[instr->admode] != other && types[instr->admode] != impimm) { | |
| 520 if ((ADDR_T)(addr - StartAddress) < | |
| 521 (ADDR_T)(EndAddress - StartAddress)) { | |
| 522 switch (GetMemType (addr)) { | |
| 523 case MEM_UNPROCESSED: | |
| 524 AddEntry (addr, scanstart, WRN_I_ACCESSED | WRN_B_TEMPORARY); | |
| 525 break; | |
| 526 case MEM_INSTRUCTION: | |
| 527 AddEntry (addr, scanstart, WRN_INSTR_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 528 break; | |
| 529 case MEM_PARAMETER: | |
| 530 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 531 break; | |
| 532 } | |
| 533 | |
| 534 if (types[instr->admode] == absindir) { /* indirect mode */ | |
| 535 addr++; /* set flags for upper vector byte */ | |
| 536 | |
| 537 if ((ADDR_T)(addr - StartAddress) < | |
| 538 (ADDR_T)(EndAddress - StartAddress)) | |
| 539 switch (GetMemType (addr)) { | |
| 540 case MEM_UNPROCESSED: | |
| 541 AddEntry (addr, scanstart, WRN_I_ACCESSED | WRN_B_TEMPORARY); | |
| 542 break; | |
| 543 case MEM_INSTRUCTION: | |
| 544 AddEntry (addr, scanstart, | |
| 545 WRN_INSTR_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 546 break; | |
| 547 case MEM_PARAMETER: | |
| 548 AddEntry (addr, scanstart, | |
| 549 WRN_PARAM_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 550 break; | |
| 551 } | |
| 552 } | |
| 553 } | |
| 554 } | |
| 555 } | |
| 556 | |
| 557 /* end of program (unexpectedly) encountered */ | |
| 558 | |
| 559 return 1; | |
| 560 } | |
| 561 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
562 |
| 0 | 563 int ScanSpecified (void) |
| 564 { | |
| 565 table *entry; | |
| 566 | |
| 567 if (fVerbose) | |
| 568 fprintf (stderr, "%s: scanning the routines at specified address(es)", | |
| 569 prog); | |
| 570 | |
| 571 while ((entry = FindNextEntryType (NULL, ~0, RTN_SURE))) { | |
| 572 PutLabel (entry->address); | |
| 573 PutLowByte (entry->address); | |
| 574 PutHighByte (entry->address); | |
| 575 | |
| 576 if (ScanSure (entry->address)) { | |
| 577 fprintf(stderr,"For routine specified at %i:", | |
| 578 (unsigned int)entry->address); | |
| 579 return 1; | |
| 580 } | |
| 1 | 581 entry = FindNextEntryType (NULL, ~0, RTN_SURE); |
| 0 | 582 DeleteEntry (entry); |
| 583 } | |
| 584 | |
| 585 return 0; | |
| 586 } | |
| 587 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
588 |
| 0 | 589 void UnDoScan (ADDR_T scanstart) |
| 590 { | |
| 591 opcodes *instr; | |
| 592 unsigned counter; | |
| 593 ADDR_T address; | |
| 594 | |
| 595 for (address = scanstart; address != EndAddress; address++) { | |
| 596 if (GetMemFlag (address)) return; | |
| 597 | |
| 598 switch (GetMemType (address)) { | |
| 599 case MEM_UNPROCESSED: | |
| 600 return; | |
| 601 | |
| 602 case MEM_INSTRUCTION: | |
| 603 SetMemFlag (address); | |
| 604 SetMemType (address, MEM_DATA); /* This could cause WRN_PARAM_WRITTEN_TO | |
| 605 in vain. */ | |
| 606 instr = &opset[Memory[address++]]; | |
| 607 for (counter = sizes[instr->admode]; --counter; address++) | |
| 608 if (GetMemType (address) == MEM_PARAMETER) | |
| 609 SetMemType (address, MEM_UNPROCESSED); | |
| 610 else if (GetMemType (address) == MEM_INSTRUCTION) | |
| 611 break; | |
| 612 | |
| 613 if (instr->mnemonic == S_STP || instr->mnemonic == S_BRK || | |
| 614 instr->mnemonic == S_RTI || instr->mnemonic == S_RTS || | |
| 615 instr->mnemonic == S_JMP || instr->admode == rel) | |
| 616 return; | |
| 617 | |
| 618 address--; | |
| 619 break; | |
| 620 | |
| 621 case MEM_PARAMETER: | |
| 622 SetMemType (address, MEM_UNPROCESSED); | |
| 623 } | |
| 624 } | |
| 625 } | |
| 626 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
627 |
| 0 | 628 void DeleteSuspectedParents (ADDR_T child) |
| 629 { | |
| 630 table *entry = NULL; | |
| 631 | |
| 632 while ((entry = FindNextEntry (entry, child, ~(RTN_B_PROCESSED | | |
| 633 RTN_B_TEMPORARY), | |
| 634 RTN_SUSPECTED))) { | |
| 635 if (entry->type & RTN_B_PROCESSED && entry->parent != child) | |
| 636 DeleteSuspectedParents (entry->parent); | |
| 637 | |
| 638 DeleteEntry (entry); | |
| 639 } | |
| 640 | |
| 641 entry = NULL; | |
| 642 | |
| 643 while ((entry = FindNextEntryTypeParent (entry, child, ~0, RTN_SUSP_POT))) | |
| 644 DeleteEntry (entry); | |
| 645 | |
| 646 entry = NULL; | |
| 647 | |
| 648 while ((entry = FindNextEntryTypeParent (entry, child, | |
| 649 MASK_ANY | WRN_B_TEMPORARY, | |
| 650 WRN_ANY | WRN_B_TEMPORARY))) { | |
| 651 if (entry->type == (WRN_PARAM_JUMPED_TO | WRN_B_TEMPORARY)) | |
| 652 SetMemType (entry->address, MEM_PARAMETER); | |
| 653 | |
| 654 DeleteEntry (entry); | |
| 655 } | |
| 656 | |
| 657 UnDoScan (child); | |
| 658 } | |
| 659 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
660 |
| 0 | 661 void ScanPotentials (void) |
| 662 { | |
| 663 table *entry; | |
| 664 ADDR_T address; | |
| 665 | |
| 666 if (fVerbose) | |
| 667 fprintf (stderr, "\n%s: scanning potential routines\n", prog); | |
| 668 | |
| 669 while ((entry = FindNextEntryType (NULL, ~0, RTN_POTENTIAL))) { | |
| 670 address = entry->address; | |
| 671 DeleteEntry (entry); | |
| 672 | |
| 673 if (!ScanPotential (address)) { | |
| 674 while ((entry = FindNextEntryType (NULL, ~RTN_B_TEMPORARY, | |
| 675 RTN_SUSPECTED))) { | |
| 676 entry->type |= RTN_B_PROCESSED; | |
| 677 | |
| 678 if (ScanPotential (entry->address) && | |
| 679 (Options & M_DATA_BLOCKS) != O_DBL_IGNORE) { | |
| 680 DeleteSuspectedParents (entry->address); | |
| 681 SetMemType (address, MEM_DATA); | |
| 682 } | |
| 683 } | |
| 684 | |
| 685 if (GetMemType (address) != MEM_DATA) { | |
| 686 PutLabel (address); | |
| 687 PutLowByte (address); | |
| 688 PutHighByte (address); | |
| 689 } | |
| 690 | |
| 691 entry = NULL; | |
| 692 | |
| 693 while ((entry = FindNextEntryType (entry, ~0, RTN_B_TEMPORARY | | |
| 694 RTN_SUSPECTED | RTN_B_PROCESSED))) | |
| 695 DeleteEntry (entry); | |
| 696 | |
| 697 entry = NULL; | |
| 698 | |
| 699 while ((entry = FindNextEntryType (entry, ~0, | |
| 700 RTN_SUSPECTED | RTN_B_PROCESSED))) { | |
| 701 PutLabel (entry->address); | |
| 702 PutLowByte (entry->address); | |
| 703 PutHighByte (entry->address); | |
| 704 DeleteEntry (entry); | |
| 705 } | |
| 706 | |
| 707 entry = NULL; | |
| 708 | |
| 709 while ((entry = FindNextEntryType (entry, ~0, RTN_SUSP_POT))) | |
| 710 entry->type = RTN_POTENTIAL; | |
| 711 | |
| 712 entry = NULL; | |
| 713 | |
| 714 while ((entry = FindNextEntryType (entry, MASK_ANY | WRN_B_TEMPORARY, | |
| 715 WRN_ANY | WRN_B_TEMPORARY))) { | |
| 716 switch (entry->type & ~WRN_B_TEMPORARY) { | |
| 717 case WRN_PARAM_WRITTEN_TO: | |
| 718 if (GetMemType (entry->address) == MEM_DATA) | |
| 719 SetMemType (entry->address, MEM_PARAMETER); | |
| 720 entry->type &= ~WRN_B_TEMPORARY; | |
| 721 break; | |
| 722 | |
| 723 case WRN_INSTR_WRITTEN_TO: | |
| 724 if (GetMemType (entry->address) == MEM_DATA) | |
| 725 SetMemType (entry->address, MEM_INSTRUCTION); | |
| 726 entry->type &= ~WRN_B_TEMPORARY; | |
| 727 break; | |
| 728 | |
| 729 case WRN_I_ACCESSED: | |
| 730 SetMemType (entry->address, MEM_DATA); | |
| 731 /* fall through */ | |
| 732 case WRN_I_LABEL_NEEDED: | |
| 733 PutLabel (entry->address); | |
| 734 PutLowByte (entry->address); | |
| 735 PutHighByte (entry->address); | |
| 736 DeleteEntry (entry); | |
| 737 break; | |
| 738 | |
| 739 default: | |
| 740 entry->type &= ~WRN_B_TEMPORARY; | |
| 741 } | |
| 742 } | |
| 743 } | |
| 744 else { | |
| 745 DeleteSuspectedParents (address); | |
| 746 SetMemType (address, MEM_DATA); | |
| 747 } | |
| 748 } | |
| 749 } | |
| 750 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
751 |
| 0 | 752 void ScanTheRest (void) |
| 753 { | |
| 754 ADDR_T address; | |
| 755 table *entry; | |
| 756 unsigned int fPotentials; | |
| 757 | |
| 758 if ((Options & M_DATA_BLOCKS) == O_DBL_NOSCAN) { | |
| 759 for (address = StartAddress; address != EndAddress; address++) | |
| 760 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 761 SetMemType (address, MEM_DATA); | |
| 762 | |
| 763 return; | |
| 764 } | |
| 765 | |
| 766 if (fVerbose) | |
| 767 fprintf (stderr, "%s: scanning the remaining bytes for routines\n", prog); | |
| 768 | |
| 769 for (address = StartAddress; address != EndAddress; address++) { | |
| 770 if (GetMemType (address) || GetMemFlag (address)) | |
| 771 continue; /* scan only unprocessed bytes */ | |
| 772 | |
| 773 if (Options & B_RSC_STRICT) | |
| 774 switch (opset[Memory[address]].mnemonic) { | |
| 775 case S_RTI: | |
| 776 case S_RTS: | |
| 777 case S_BRK: | |
| 778 case S_STP: | |
| 779 continue; | |
| 780 | |
| 781 case S_BRA: | |
| 782 break; | |
| 783 | |
| 784 default: | |
| 785 if (opset[Memory[address]].admode == rel && | |
| 786 GetMemType (address + sizes[rel]) != MEM_INSTRUCTION) | |
| 787 AddEntry (address + sizes[rel], address, | |
| 788 RTN_SUSPECTED | RTN_B_TEMPORARY); | |
| 789 } | |
| 790 | |
| 791 if (fVerbose) | |
| 792 fprintf (stderr, "\r%s: scanning at %X", prog, address); | |
| 793 | |
| 794 if (!ScanPotential (address)) { | |
| 795 while ((entry = FindNextEntryType (NULL, ~RTN_B_TEMPORARY, | |
| 796 RTN_SUSPECTED))) { | |
| 797 entry->type |= RTN_B_PROCESSED; | |
| 798 | |
| 799 if (ScanPotential (entry->address) && | |
| 800 (Options & M_DATA_BLOCKS) != O_DBL_IGNORE) { | |
| 801 DeleteSuspectedParents (entry->address); | |
| 802 SetMemType (address, MEM_DATA); | |
| 803 } | |
| 804 } | |
| 805 | |
| 806 if (GetMemType (address) != MEM_DATA) { | |
| 807 PutLabel (address); | |
| 808 PutLowByte (address); | |
| 809 PutHighByte (address); | |
| 810 } | |
| 811 | |
| 812 fPotentials = FALSE; | |
| 813 entry = NULL; | |
| 814 | |
| 815 while ((entry = FindNextEntryType (entry, ~0, RTN_SUSP_POT))) { | |
| 816 fPotentials = TRUE; | |
| 817 entry->type = RTN_POTENTIAL; | |
| 818 } | |
| 819 | |
| 820 entry = NULL; | |
| 821 | |
| 822 while ((entry = FindNextEntryType (entry, ~0, RTN_B_TEMPORARY | | |
| 823 RTN_SUSPECTED | RTN_B_PROCESSED))) | |
| 824 DeleteEntry (entry); | |
| 825 | |
| 826 entry = NULL; | |
| 827 | |
| 828 while ((entry = FindNextEntryType (entry, ~0, | |
| 829 RTN_SUSPECTED | RTN_B_PROCESSED))) { | |
| 830 PutLabel (entry->address); | |
| 831 PutLowByte (entry->address); | |
| 832 PutHighByte (entry->address); | |
| 833 DeleteEntry (entry); | |
| 834 } | |
| 835 | |
| 836 entry = NULL; | |
| 837 | |
| 838 while ((entry = FindNextEntryType (entry, MASK_ANY | WRN_B_TEMPORARY, | |
| 839 WRN_ANY | WRN_B_TEMPORARY))) { | |
| 840 switch (entry->type & ~WRN_B_TEMPORARY) { | |
| 841 case WRN_PARAM_WRITTEN_TO: | |
| 842 if (GetMemType (entry->address) == MEM_DATA) | |
| 843 SetMemType (entry->address, MEM_PARAMETER); | |
| 844 entry->type &= ~WRN_B_TEMPORARY; | |
| 845 break; | |
| 846 | |
| 847 case WRN_INSTR_WRITTEN_TO: | |
| 848 if (GetMemType (entry->address) == MEM_DATA) | |
| 849 SetMemType (entry->address, MEM_INSTRUCTION); | |
| 850 entry->type &= ~WRN_B_TEMPORARY; | |
| 851 break; | |
| 852 | |
| 853 case WRN_I_ACCESSED: | |
| 854 SetMemType (entry->address, MEM_DATA); | |
| 855 /* fall through */ | |
| 856 case WRN_I_LABEL_NEEDED: | |
| 857 PutLabel (entry->address); | |
| 858 PutLowByte (entry->address); | |
| 859 PutHighByte (entry->address); | |
| 860 DeleteEntry (entry); | |
| 861 break; | |
| 862 | |
| 863 default: | |
| 864 entry->type &= ~WRN_B_TEMPORARY; | |
| 865 } | |
| 866 } | |
| 867 | |
| 868 if (fPotentials) ScanPotentials (); | |
| 869 } | |
| 870 else { | |
| 871 DeleteSuspectedParents (address); | |
| 872 SetMemType (address, MEM_DATA); | |
| 873 } | |
| 874 } | |
| 875 | |
| 876 if (fVerbose) | |
| 877 fprintf (stderr, "\n"); | |
| 878 | |
| 879 for (address = StartAddress; address != EndAddress; address++) | |
| 880 if (GetMemType (address) == MEM_UNPROCESSED) { | |
| 881 fPotentials = GetMemFlag (address) ? MEM_PARAMETER : MEM_DATA; | |
| 882 SetMemType (address, fPotentials); | |
| 883 } | |
| 884 } |