Mercurial > hg > forks > dxa
annotate scan.c @ 9:987c90810883
Fix a warning.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Wed, 27 Jun 2018 11:37:08 +0300 |
| parents | ec2f8f6f1dc9 |
| children | fe4d840c13eb |
| 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 } | |
| 9 | 189 return 0; |
| 190 | |
| 0 | 191 case S_BRA: |
| 192 case S_RTS: | |
| 193 case S_RTI: | |
| 194 return 0; | |
| 195 | |
| 196 case S_BRK: | |
| 197 case S_STP: | |
| 198 return (Options & M_DATA_BLOCKS) == O_DBL_STRICT && | |
| 199 Options & B_BRK_REJECT; | |
| 200 } | |
| 201 | |
| 202 if (instr->admode == rel) { | |
| 203 if ((ADDR_T)(addr - scanstart) >= (ADDR_T)(address - scanstart) | |
| 204 || GetMemType (addr) != MEM_INSTRUCTION) { | |
| 205 if (GetMemType (address + size) != MEM_INSTRUCTION) | |
| 206 AddEntry (address + size, scanstart, RTN_POTENTIAL); | |
| 207 | |
| 208 return 0; | |
| 209 } | |
| 210 | |
| 211 continue; | |
| 212 } | |
| 213 | |
| 214 if (instr->mnemonic == S_JSR) { | |
| 215 if (!(Options & B_STK_BALANCE)) { | |
| 216 if (GetMemType (address + size) != MEM_INSTRUCTION) | |
| 217 AddEntry (address + size, scanstart, RTN_POTENTIAL); | |
| 218 | |
| 219 return 0; | |
| 220 } | |
| 221 | |
| 222 continue; | |
| 223 } | |
| 224 | |
| 225 switch (size) { | |
| 226 case 2: | |
| 227 addr = Memory[(ADDR_T)(address + 1)]; | |
| 228 break; | |
| 229 case 3: | |
| 230 addr = Memory[(ADDR_T)(address + 1)] + | |
| 231 (Memory[(ADDR_T)(address + 2)] << 8); | |
| 232 break; | |
| 233 } | |
| 234 | |
| 235 if (types[instr->admode] != impimm && GetMemFlag (addr) && | |
| 236 GetMemType (addr) == MEM_UNPROCESSED) | |
| 237 return (Options & M_DATA_BLOCKS) == O_DBL_STRICT; | |
| 238 | |
| 239 if (types[instr->admode] != impimm && | |
| 240 ((ADDR_T)(addr - StartAddress) < | |
| 241 (ADDR_T)(EndAddress - StartAddress) || | |
| 242 Options & B_LBL_ALWAYS)) { | |
| 243 PutLabel (addr); | |
| 244 PutLowByte (addr); | |
| 245 PutHighByte (addr); | |
| 246 } | |
| 247 | |
| 248 if (types[instr->admode] != other && types[instr->admode] != impimm) { | |
| 249 if ((ADDR_T)(addr - StartAddress) < | |
| 250 (ADDR_T)(EndAddress - StartAddress)) { | |
| 251 switch (GetMemType (addr)) { | |
| 252 case MEM_UNPROCESSED: | |
| 253 SetMemType (addr, MEM_DATA); | |
| 254 break; | |
| 255 case MEM_INSTRUCTION: | |
| 256 AddEntry (addr, scanstart, WRN_INSTR_WRITTEN_TO); | |
| 257 break; | |
| 258 case MEM_PARAMETER: | |
| 259 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO); | |
| 260 break; | |
| 261 } | |
| 262 | |
| 263 if (types[instr->admode] == absindir) { /* indirect mode */ | |
| 264 addr++; /* set flags for upper vector byte */ | |
| 265 | |
| 266 if ((ADDR_T)(addr - StartAddress) < | |
| 267 (ADDR_T)(EndAddress - StartAddress)) | |
| 268 switch (GetMemType (addr)) { | |
| 269 case MEM_UNPROCESSED: | |
| 270 SetMemType (addr, MEM_DATA); | |
| 271 break; | |
| 272 case MEM_INSTRUCTION: | |
| 273 AddEntry (addr, scanstart, WRN_INSTR_WRITTEN_TO); | |
| 274 break; | |
| 275 case MEM_PARAMETER: | |
| 276 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO); | |
| 277 break; | |
| 278 } | |
| 279 } | |
| 280 } | |
| 281 } | |
| 282 } | |
| 283 | |
| 284 /* end of program (unexpectedly) encountered */ | |
| 285 | |
| 286 if (Options & O_DBL_STRICT) return 1; | |
| 287 | |
| 288 AddEntry (EndAddress, scanstart, WRN_RTN_TRUNCATED); | |
| 289 return 0; | |
| 290 } | |
| 291 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
292 |
| 0 | 293 int ScanPotential (ADDR_T scanstart) |
| 294 { | |
| 295 ADDR_T address, addr; | |
| 296 opcodes *instr; | |
| 297 | |
| 298 unsigned int size, counter; | |
| 299 | |
| 300 for (address = scanstart;; address += size) { | |
| 301 if (GetMemFlag (address)) /* rest of routine not valid */ | |
| 302 return 1; | |
| 303 | |
| 304 instr = &opset[Memory[address]]; | |
| 305 | |
| 306 if (!instr->mnemonic) { /* invalid opcode */ | |
| 307 SetMemFlag (address); | |
| 308 | |
| 309 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 310 SetMemType (address, MEM_DATA); | |
| 311 return 1; | |
| 312 } | |
| 313 | |
| 314 size = sizes[instr->admode]; | |
| 315 if ((ADDR_T)(address + size - StartAddress) > | |
| 316 (ADDR_T)(EndAddress - StartAddress)) | |
| 317 break; /* end of program code encountered */ | |
| 318 | |
| 319 if (GetMemType (address) == MEM_INSTRUCTION) | |
| 320 return 0; /* The rest of the routine has already been processed. */ | |
| 321 | |
| 322 if (instr->admode == zrel) { | |
| 323 addr = Memory[(ADDR_T)(address + 1)]; | |
| 324 | |
| 325 if (GetMemFlag (addr) && GetMemType (addr) == MEM_UNPROCESSED) | |
| 326 goto Failure; | |
| 327 | |
| 328 if (((ADDR_T)(addr - StartAddress) < | |
| 329 (ADDR_T)(EndAddress - StartAddress) || | |
| 330 Options & B_LBL_ALWAYS)) | |
| 331 AddEntry (addr, scanstart, WRN_I_LABEL_NEEDED | WRN_B_TEMPORARY); | |
| 332 | |
| 333 addr = (ADDR_T)((int)(char)Memory[(ADDR_T)(address + 1)] + | |
| 334 address + size); | |
| 335 | |
| 336 goto IsJump; | |
| 337 } | |
| 338 | |
| 339 if (instr->admode == rel) { | |
| 340 addr = (ADDR_T)((int)(char)Memory[(ADDR_T)(address + 1)] + | |
| 341 address + size); | |
| 342 | |
| 343 goto IsJump; | |
| 344 } | |
| 345 | |
| 346 switch (size) { | |
| 347 case 2: | |
| 348 addr = Memory[(ADDR_T)(address + 1)]; | |
| 349 break; | |
| 350 case 3: | |
| 351 addr = Memory[(ADDR_T)(address + 1)] + | |
| 352 (Memory[(ADDR_T)(address + 2)] << 8); | |
| 353 break; | |
| 354 default: | |
| 355 addr = address; | |
| 356 } | |
| 357 | |
| 358 if (types[instr->admode] != impimm && GetMemFlag (addr) && | |
| 359 GetMemType (addr) == MEM_UNPROCESSED) { | |
| 360 Failure: | |
| 361 SetMemFlag (address); | |
| 362 | |
| 363 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 364 SetMemType (address, MEM_DATA); | |
| 365 return 1; | |
| 366 } | |
| 367 | |
| 368 if ((instr->mnemonic == S_JSR || instr->mnemonic == S_JMP) && | |
| 369 instr->admode == abso) { | |
| 370 IsJump: | |
| 371 if (GetMemFlag (addr)) { | |
| 372 SetMemFlag (address); | |
| 373 | |
| 374 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 375 SetMemType (address, MEM_DATA); | |
| 376 return 1; | |
| 377 } | |
| 378 | |
| 379 if ((ADDR_T)(addr - StartAddress) < | |
| 380 (ADDR_T)(EndAddress - StartAddress)) | |
| 381 AddEntry (addr, scanstart, Options & B_SCEPTIC && | |
| 382 instr->admode == rel && instr->mnemonic != S_BRA ? | |
| 383 RTN_SUSP_POT : RTN_SUSPECTED); | |
| 384 else if (Options & B_LBL_ALWAYS) | |
| 385 AddEntry (addr, scanstart, WRN_I_LABEL_NEEDED | WRN_B_TEMPORARY); | |
| 386 | |
| 387 if (Options & B_JMP_STRICT && addr == address && | |
| 388 instr->mnemonic != S_BVC) { | |
| 389 SetMemFlag (address); | |
| 390 | |
| 391 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 392 SetMemType (address, MEM_DATA); | |
| 393 return 1; | |
| 394 } | |
| 395 } | |
| 396 | |
| 397 switch (instr->mnemonic) { | |
| 398 case S_BRK: | |
| 399 case S_STP: | |
| 400 if (Options & B_BRK_REJECT) { | |
| 401 SetMemFlag (address); | |
| 402 | |
| 403 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 404 SetMemType (address, MEM_DATA); | |
| 405 return 1; | |
| 406 } | |
| 407 } | |
| 408 | |
| 409 if (!GetMemFlag (address)) | |
| 410 switch (GetMemType (address)) { | |
| 411 case MEM_DATA: | |
| 412 AddEntry (address, scanstart, WRN_INSTR_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 413 break; | |
| 414 | |
| 415 case MEM_PARAMETER: | |
| 416 AddEntry (address, scanstart, WRN_PARAM_JUMPED_TO | WRN_B_TEMPORARY); | |
| 417 } | |
| 418 | |
| 419 SetMemType (address, MEM_INSTRUCTION); | |
| 420 | |
| 421 for (counter = size, addr = address + 1; --counter; addr++) | |
| 422 switch (GetMemType (addr)) { | |
| 423 case MEM_INSTRUCTION: | |
| 424 AddEntry (addr, scanstart, WRN_PARAM_JUMPED_TO | WRN_B_TEMPORARY); | |
| 425 break; | |
| 426 case MEM_DATA: | |
| 427 if (!GetMemFlag (addr)) | |
| 428 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 429 break; | |
| 430 default: | |
| 431 SetMemType (addr, MEM_PARAMETER); | |
| 432 } | |
| 433 | |
| 434 switch (instr->mnemonic) { | |
| 435 case S_BRK: | |
| 436 case S_STP: | |
| 437 case S_RTS: | |
| 438 case S_BRA: | |
| 439 case S_RTI: | |
| 440 return 0; | |
| 441 | |
| 442 case S_JMP: | |
| 443 addr = Memory[(ADDR_T)(address + 1)] + | |
| 444 (Memory[(ADDR_T)(address + 2)] << 8); | |
| 445 | |
| 446 if (instr->admode == iabs && (ADDR_T)(addr - StartAddress) < | |
| 447 (ADDR_T)(EndAddress - StartAddress)) { | |
| 448 AddEntry (addr, scanstart, WRN_I_LABEL_NEEDED | WRN_B_TEMPORARY); | |
| 449 | |
| 450 /* Mark pointer as data. */ | |
| 451 switch (GetMemType (addr)) { | |
| 452 case MEM_UNPROCESSED: | |
| 453 AddEntry (addr, scanstart, WRN_I_ACCESSED | WRN_B_TEMPORARY); | |
| 454 break; | |
| 455 case MEM_INSTRUCTION: | |
| 456 AddEntry (addr, scanstart, WRN_INSTR_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 457 break; | |
| 458 case MEM_PARAMETER: | |
| 459 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 460 break; | |
| 461 } | |
| 462 | |
| 463 addr++; | |
| 464 | |
| 465 if ((ADDR_T)(addr - StartAddress) < | |
| 466 (ADDR_T)(EndAddress - StartAddress)) | |
| 467 switch (GetMemType (addr)) { | |
| 468 case MEM_UNPROCESSED: | |
| 469 AddEntry (addr, scanstart, WRN_I_ACCESSED | WRN_B_TEMPORARY); | |
| 470 break; | |
| 471 case MEM_INSTRUCTION: | |
| 472 AddEntry (addr, scanstart, | |
| 473 WRN_INSTR_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 474 break; | |
| 475 case MEM_PARAMETER: | |
| 476 AddEntry (addr, scanstart, | |
| 477 WRN_PARAM_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 478 break; | |
| 479 } | |
| 480 } | |
| 481 else if (Options & B_LBL_ALWAYS) | |
| 482 AddEntry (addr, scanstart, WRN_I_LABEL_NEEDED | WRN_B_TEMPORARY); | |
| 483 | |
| 484 return 0; | |
| 485 } | |
| 486 | |
| 487 if (instr->admode == rel && | |
| 488 GetMemType (address + size) != MEM_INSTRUCTION) { | |
| 489 AddEntry (address + size, scanstart, RTN_SUSP_POT); | |
| 490 | |
| 491 return 0; | |
| 492 } | |
| 493 | |
| 494 if (instr->mnemonic == S_JSR) { | |
| 495 if (!(Options & B_STK_BALANCE)) { | |
| 496 if (GetMemType (address + size) != MEM_INSTRUCTION) | |
| 497 AddEntry (address + size, scanstart, RTN_SUSP_POT); | |
| 498 | |
| 499 return 0; | |
| 500 } | |
| 501 | |
| 502 continue; | |
| 503 } | |
| 504 | |
| 505 switch (size) { | |
| 506 case 2: | |
| 507 addr = Memory[(ADDR_T)(address + 1)]; | |
| 508 break; | |
| 509 case 3: | |
| 510 addr = Memory[(ADDR_T)(address + 1)] + | |
| 511 (Memory[(ADDR_T)(address + 2)] << 8); | |
| 512 break; | |
| 513 } | |
| 514 | |
| 515 if (types[instr->admode] != impimm && | |
| 516 ((ADDR_T)(addr - StartAddress) < | |
| 517 (ADDR_T)(EndAddress - StartAddress) || | |
| 518 Options & B_LBL_ALWAYS)) | |
| 519 AddEntry (addr, scanstart, WRN_I_LABEL_NEEDED | WRN_B_TEMPORARY); | |
| 520 | |
| 521 if (types[instr->admode] != other && types[instr->admode] != impimm) { | |
| 522 if ((ADDR_T)(addr - StartAddress) < | |
| 523 (ADDR_T)(EndAddress - StartAddress)) { | |
| 524 switch (GetMemType (addr)) { | |
| 525 case MEM_UNPROCESSED: | |
| 526 AddEntry (addr, scanstart, WRN_I_ACCESSED | WRN_B_TEMPORARY); | |
| 527 break; | |
| 528 case MEM_INSTRUCTION: | |
| 529 AddEntry (addr, scanstart, WRN_INSTR_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 530 break; | |
| 531 case MEM_PARAMETER: | |
| 532 AddEntry (addr, scanstart, WRN_PARAM_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 533 break; | |
| 534 } | |
| 535 | |
| 536 if (types[instr->admode] == absindir) { /* indirect mode */ | |
| 537 addr++; /* set flags for upper vector byte */ | |
| 538 | |
| 539 if ((ADDR_T)(addr - StartAddress) < | |
| 540 (ADDR_T)(EndAddress - StartAddress)) | |
| 541 switch (GetMemType (addr)) { | |
| 542 case MEM_UNPROCESSED: | |
| 543 AddEntry (addr, scanstart, WRN_I_ACCESSED | WRN_B_TEMPORARY); | |
| 544 break; | |
| 545 case MEM_INSTRUCTION: | |
| 546 AddEntry (addr, scanstart, | |
| 547 WRN_INSTR_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 548 break; | |
| 549 case MEM_PARAMETER: | |
| 550 AddEntry (addr, scanstart, | |
| 551 WRN_PARAM_WRITTEN_TO | WRN_B_TEMPORARY); | |
| 552 break; | |
| 553 } | |
| 554 } | |
| 555 } | |
| 556 } | |
| 557 } | |
| 558 | |
| 559 /* end of program (unexpectedly) encountered */ | |
| 560 | |
| 561 return 1; | |
| 562 } | |
| 563 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
564 |
| 0 | 565 int ScanSpecified (void) |
| 566 { | |
| 567 table *entry; | |
| 568 | |
| 569 if (fVerbose) | |
| 570 fprintf (stderr, "%s: scanning the routines at specified address(es)", | |
| 571 prog); | |
| 572 | |
| 573 while ((entry = FindNextEntryType (NULL, ~0, RTN_SURE))) { | |
| 574 PutLabel (entry->address); | |
| 575 PutLowByte (entry->address); | |
| 576 PutHighByte (entry->address); | |
| 577 | |
| 578 if (ScanSure (entry->address)) { | |
| 579 fprintf(stderr,"For routine specified at %i:", | |
| 580 (unsigned int)entry->address); | |
| 581 return 1; | |
| 582 } | |
| 1 | 583 entry = FindNextEntryType (NULL, ~0, RTN_SURE); |
| 0 | 584 DeleteEntry (entry); |
| 585 } | |
| 586 | |
| 587 return 0; | |
| 588 } | |
| 589 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
590 |
| 0 | 591 void UnDoScan (ADDR_T scanstart) |
| 592 { | |
| 593 opcodes *instr; | |
| 594 unsigned counter; | |
| 595 ADDR_T address; | |
| 596 | |
| 597 for (address = scanstart; address != EndAddress; address++) { | |
| 598 if (GetMemFlag (address)) return; | |
| 599 | |
| 600 switch (GetMemType (address)) { | |
| 601 case MEM_UNPROCESSED: | |
| 602 return; | |
| 603 | |
| 604 case MEM_INSTRUCTION: | |
| 605 SetMemFlag (address); | |
| 606 SetMemType (address, MEM_DATA); /* This could cause WRN_PARAM_WRITTEN_TO | |
| 607 in vain. */ | |
| 608 instr = &opset[Memory[address++]]; | |
| 609 for (counter = sizes[instr->admode]; --counter; address++) | |
| 610 if (GetMemType (address) == MEM_PARAMETER) | |
| 611 SetMemType (address, MEM_UNPROCESSED); | |
| 612 else if (GetMemType (address) == MEM_INSTRUCTION) | |
| 613 break; | |
| 614 | |
| 615 if (instr->mnemonic == S_STP || instr->mnemonic == S_BRK || | |
| 616 instr->mnemonic == S_RTI || instr->mnemonic == S_RTS || | |
| 617 instr->mnemonic == S_JMP || instr->admode == rel) | |
| 618 return; | |
| 619 | |
| 620 address--; | |
| 621 break; | |
| 622 | |
| 623 case MEM_PARAMETER: | |
| 624 SetMemType (address, MEM_UNPROCESSED); | |
| 625 } | |
| 626 } | |
| 627 } | |
| 628 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
629 |
| 0 | 630 void DeleteSuspectedParents (ADDR_T child) |
| 631 { | |
| 632 table *entry = NULL; | |
| 633 | |
| 634 while ((entry = FindNextEntry (entry, child, ~(RTN_B_PROCESSED | | |
| 635 RTN_B_TEMPORARY), | |
| 636 RTN_SUSPECTED))) { | |
| 637 if (entry->type & RTN_B_PROCESSED && entry->parent != child) | |
| 638 DeleteSuspectedParents (entry->parent); | |
| 639 | |
| 640 DeleteEntry (entry); | |
| 641 } | |
| 642 | |
| 643 entry = NULL; | |
| 644 | |
| 645 while ((entry = FindNextEntryTypeParent (entry, child, ~0, RTN_SUSP_POT))) | |
| 646 DeleteEntry (entry); | |
| 647 | |
| 648 entry = NULL; | |
| 649 | |
| 650 while ((entry = FindNextEntryTypeParent (entry, child, | |
| 651 MASK_ANY | WRN_B_TEMPORARY, | |
| 652 WRN_ANY | WRN_B_TEMPORARY))) { | |
| 653 if (entry->type == (WRN_PARAM_JUMPED_TO | WRN_B_TEMPORARY)) | |
| 654 SetMemType (entry->address, MEM_PARAMETER); | |
| 655 | |
| 656 DeleteEntry (entry); | |
| 657 } | |
| 658 | |
| 659 UnDoScan (child); | |
| 660 } | |
| 661 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
662 |
| 0 | 663 void ScanPotentials (void) |
| 664 { | |
| 665 table *entry; | |
| 666 ADDR_T address; | |
| 667 | |
| 668 if (fVerbose) | |
| 669 fprintf (stderr, "\n%s: scanning potential routines\n", prog); | |
| 670 | |
| 671 while ((entry = FindNextEntryType (NULL, ~0, RTN_POTENTIAL))) { | |
| 672 address = entry->address; | |
| 673 DeleteEntry (entry); | |
| 674 | |
| 675 if (!ScanPotential (address)) { | |
| 676 while ((entry = FindNextEntryType (NULL, ~RTN_B_TEMPORARY, | |
| 677 RTN_SUSPECTED))) { | |
| 678 entry->type |= RTN_B_PROCESSED; | |
| 679 | |
| 680 if (ScanPotential (entry->address) && | |
| 681 (Options & M_DATA_BLOCKS) != O_DBL_IGNORE) { | |
| 682 DeleteSuspectedParents (entry->address); | |
| 683 SetMemType (address, MEM_DATA); | |
| 684 } | |
| 685 } | |
| 686 | |
| 687 if (GetMemType (address) != MEM_DATA) { | |
| 688 PutLabel (address); | |
| 689 PutLowByte (address); | |
| 690 PutHighByte (address); | |
| 691 } | |
| 692 | |
| 693 entry = NULL; | |
| 694 | |
| 695 while ((entry = FindNextEntryType (entry, ~0, RTN_B_TEMPORARY | | |
| 696 RTN_SUSPECTED | RTN_B_PROCESSED))) | |
| 697 DeleteEntry (entry); | |
| 698 | |
| 699 entry = NULL; | |
| 700 | |
| 701 while ((entry = FindNextEntryType (entry, ~0, | |
| 702 RTN_SUSPECTED | RTN_B_PROCESSED))) { | |
| 703 PutLabel (entry->address); | |
| 704 PutLowByte (entry->address); | |
| 705 PutHighByte (entry->address); | |
| 706 DeleteEntry (entry); | |
| 707 } | |
| 708 | |
| 709 entry = NULL; | |
| 710 | |
| 711 while ((entry = FindNextEntryType (entry, ~0, RTN_SUSP_POT))) | |
| 712 entry->type = RTN_POTENTIAL; | |
| 713 | |
| 714 entry = NULL; | |
| 715 | |
| 716 while ((entry = FindNextEntryType (entry, MASK_ANY | WRN_B_TEMPORARY, | |
| 717 WRN_ANY | WRN_B_TEMPORARY))) { | |
| 718 switch (entry->type & ~WRN_B_TEMPORARY) { | |
| 719 case WRN_PARAM_WRITTEN_TO: | |
| 720 if (GetMemType (entry->address) == MEM_DATA) | |
| 721 SetMemType (entry->address, MEM_PARAMETER); | |
| 722 entry->type &= ~WRN_B_TEMPORARY; | |
| 723 break; | |
| 724 | |
| 725 case WRN_INSTR_WRITTEN_TO: | |
| 726 if (GetMemType (entry->address) == MEM_DATA) | |
| 727 SetMemType (entry->address, MEM_INSTRUCTION); | |
| 728 entry->type &= ~WRN_B_TEMPORARY; | |
| 729 break; | |
| 730 | |
| 731 case WRN_I_ACCESSED: | |
| 732 SetMemType (entry->address, MEM_DATA); | |
| 733 /* fall through */ | |
| 734 case WRN_I_LABEL_NEEDED: | |
| 735 PutLabel (entry->address); | |
| 736 PutLowByte (entry->address); | |
| 737 PutHighByte (entry->address); | |
| 738 DeleteEntry (entry); | |
| 739 break; | |
| 740 | |
| 741 default: | |
| 742 entry->type &= ~WRN_B_TEMPORARY; | |
| 743 } | |
| 744 } | |
| 745 } | |
| 746 else { | |
| 747 DeleteSuspectedParents (address); | |
| 748 SetMemType (address, MEM_DATA); | |
| 749 } | |
| 750 } | |
| 751 } | |
| 752 | |
|
2
ec2f8f6f1dc9
Cleanup pass #1: Get rid of some ancient K&R-isms.
Matti Hamalainen <ccr@tnsp.org>
parents:
1
diff
changeset
|
753 |
| 0 | 754 void ScanTheRest (void) |
| 755 { | |
| 756 ADDR_T address; | |
| 757 table *entry; | |
| 758 unsigned int fPotentials; | |
| 759 | |
| 760 if ((Options & M_DATA_BLOCKS) == O_DBL_NOSCAN) { | |
| 761 for (address = StartAddress; address != EndAddress; address++) | |
| 762 if (GetMemType (address) == MEM_UNPROCESSED) | |
| 763 SetMemType (address, MEM_DATA); | |
| 764 | |
| 765 return; | |
| 766 } | |
| 767 | |
| 768 if (fVerbose) | |
| 769 fprintf (stderr, "%s: scanning the remaining bytes for routines\n", prog); | |
| 770 | |
| 771 for (address = StartAddress; address != EndAddress; address++) { | |
| 772 if (GetMemType (address) || GetMemFlag (address)) | |
| 773 continue; /* scan only unprocessed bytes */ | |
| 774 | |
| 775 if (Options & B_RSC_STRICT) | |
| 776 switch (opset[Memory[address]].mnemonic) { | |
| 777 case S_RTI: | |
| 778 case S_RTS: | |
| 779 case S_BRK: | |
| 780 case S_STP: | |
| 781 continue; | |
| 782 | |
| 783 case S_BRA: | |
| 784 break; | |
| 785 | |
| 786 default: | |
| 787 if (opset[Memory[address]].admode == rel && | |
| 788 GetMemType (address + sizes[rel]) != MEM_INSTRUCTION) | |
| 789 AddEntry (address + sizes[rel], address, | |
| 790 RTN_SUSPECTED | RTN_B_TEMPORARY); | |
| 791 } | |
| 792 | |
| 793 if (fVerbose) | |
| 794 fprintf (stderr, "\r%s: scanning at %X", prog, address); | |
| 795 | |
| 796 if (!ScanPotential (address)) { | |
| 797 while ((entry = FindNextEntryType (NULL, ~RTN_B_TEMPORARY, | |
| 798 RTN_SUSPECTED))) { | |
| 799 entry->type |= RTN_B_PROCESSED; | |
| 800 | |
| 801 if (ScanPotential (entry->address) && | |
| 802 (Options & M_DATA_BLOCKS) != O_DBL_IGNORE) { | |
| 803 DeleteSuspectedParents (entry->address); | |
| 804 SetMemType (address, MEM_DATA); | |
| 805 } | |
| 806 } | |
| 807 | |
| 808 if (GetMemType (address) != MEM_DATA) { | |
| 809 PutLabel (address); | |
| 810 PutLowByte (address); | |
| 811 PutHighByte (address); | |
| 812 } | |
| 813 | |
| 814 fPotentials = FALSE; | |
| 815 entry = NULL; | |
| 816 | |
| 817 while ((entry = FindNextEntryType (entry, ~0, RTN_SUSP_POT))) { | |
| 818 fPotentials = TRUE; | |
| 819 entry->type = RTN_POTENTIAL; | |
| 820 } | |
| 821 | |
| 822 entry = NULL; | |
| 823 | |
| 824 while ((entry = FindNextEntryType (entry, ~0, RTN_B_TEMPORARY | | |
| 825 RTN_SUSPECTED | RTN_B_PROCESSED))) | |
| 826 DeleteEntry (entry); | |
| 827 | |
| 828 entry = NULL; | |
| 829 | |
| 830 while ((entry = FindNextEntryType (entry, ~0, | |
| 831 RTN_SUSPECTED | RTN_B_PROCESSED))) { | |
| 832 PutLabel (entry->address); | |
| 833 PutLowByte (entry->address); | |
| 834 PutHighByte (entry->address); | |
| 835 DeleteEntry (entry); | |
| 836 } | |
| 837 | |
| 838 entry = NULL; | |
| 839 | |
| 840 while ((entry = FindNextEntryType (entry, MASK_ANY | WRN_B_TEMPORARY, | |
| 841 WRN_ANY | WRN_B_TEMPORARY))) { | |
| 842 switch (entry->type & ~WRN_B_TEMPORARY) { | |
| 843 case WRN_PARAM_WRITTEN_TO: | |
| 844 if (GetMemType (entry->address) == MEM_DATA) | |
| 845 SetMemType (entry->address, MEM_PARAMETER); | |
| 846 entry->type &= ~WRN_B_TEMPORARY; | |
| 847 break; | |
| 848 | |
| 849 case WRN_INSTR_WRITTEN_TO: | |
| 850 if (GetMemType (entry->address) == MEM_DATA) | |
| 851 SetMemType (entry->address, MEM_INSTRUCTION); | |
| 852 entry->type &= ~WRN_B_TEMPORARY; | |
| 853 break; | |
| 854 | |
| 855 case WRN_I_ACCESSED: | |
| 856 SetMemType (entry->address, MEM_DATA); | |
| 857 /* fall through */ | |
| 858 case WRN_I_LABEL_NEEDED: | |
| 859 PutLabel (entry->address); | |
| 860 PutLowByte (entry->address); | |
| 861 PutHighByte (entry->address); | |
| 862 DeleteEntry (entry); | |
| 863 break; | |
| 864 | |
| 865 default: | |
| 866 entry->type &= ~WRN_B_TEMPORARY; | |
| 867 } | |
| 868 } | |
| 869 | |
| 870 if (fPotentials) ScanPotentials (); | |
| 871 } | |
| 872 else { | |
| 873 DeleteSuspectedParents (address); | |
| 874 SetMemType (address, MEM_DATA); | |
| 875 } | |
| 876 } | |
| 877 | |
| 878 if (fVerbose) | |
| 879 fprintf (stderr, "\n"); | |
| 880 | |
| 881 for (address = StartAddress; address != EndAddress; address++) | |
| 882 if (GetMemType (address) == MEM_UNPROCESSED) { | |
| 883 fPotentials = GetMemFlag (address) ? MEM_PARAMETER : MEM_DATA; | |
| 884 SetMemType (address, fPotentials); | |
| 885 } | |
| 886 } |