Mercurial > vba-clojure

annotate src/gba/GBACheats.cpp @ 545:2b6cdea9bcdb

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
audio now syncs properly, but moves no longer sync with main display.
author Robert McIntyre <rlm@mit.edu>
date Wed, 27 Jun 2012 13:41:01 -0500
parents f9f4f1b99eed
children
rev   line source
rlm@1 1 #include <cstdio>
rlm@1 2 #include <cctype>
rlm@1 3 #include <cstring>
rlm@1 4
rlm@1 5 #include "../common/System.h"
rlm@1 6 #include "../common/Util.h"
rlm@1 7 #include "../NLS.h"
rlm@1 8 #include "GBACheats.h"
rlm@1 9 #include "GBA.h"
rlm@1 10 #include "GBAinline.h"
rlm@1 11 #include "GBAGlobals.h"
rlm@1 12
rlm@1 13 /**
rlm@1 14 * Gameshark code types:
rlm@1 15 *
rlm@1 16 * NNNNNNNN 001DC0DE - ID code for the game (game 4 character name) from ROM
rlm@1 17 * DEADFACE XXXXXXXX - changes decryption seeds
rlm@1 18 * 0AAAAAAA 000000YY - 8-bit constant write
rlm@1 19 * 1AAAAAAA 0000YYYY - 16-bit constant write
rlm@1 20 * 2AAAAAAA YYYYYYYY - 32-bit constant write
rlm@1 21 * 3AAAAAAA YYYYYYYY - ??
rlm@1 22 * 6AAAAAAA 0000YYYY - 16-bit ROM Patch (address >> 1)
rlm@1 23 * 6AAAAAAA 1000YYYY - 16-bit ROM Patch ? (address >> 1)
rlm@1 24 * 6AAAAAAA 2000YYYY - 16-bit ROM Patch ? (address >> 1)
rlm@1 25 * 8A1AAAAA 000000YY - 8-bit button write
rlm@1 26 * 8A2AAAAA 0000YYYY - 16-bit button write
rlm@1 27 * 8A3AAAAA YYYYYYYY - 32-bit button write
rlm@1 28 * 80F00000 0000YYYY - button slow motion
rlm@1 29 * DAAAAAAA 0000YYYY - if address contains 16-bit value enable next code
rlm@1 30 * FAAAAAAA 0000YYYY - Master code function
rlm@1 31 *
rlm@1 32 * CodeBreaker codes types:
rlm@1 33 *
rlm@1 34 * 0000AAAA 000Y - Game CRC (Y are flags: 8 - CRC, 2 - DI)
rlm@1 35 * 1AAAAAAA YYYY - Master Code function (store address at ((YYYY << 0x16)
rlm@1 36 * + 0x08000100))
rlm@1 37 * 2AAAAAAA YYYY - 16-bit or
rlm@1 38 * 3AAAAAAA YYYY - 8-bit constant write
rlm@1 39 * 4AAAAAAA YYYY - Slide code
rlm@1 40 * XXXXCCCC IIII (C is count and I is address increment, X is value incr.)
rlm@1 41 * 5AAAAAAA CCCC - Super code (Write bytes to address, CCCC is count)
rlm@1 42 * BBBBBBBB BBBB
rlm@1 43 * 6AAAAAAA YYYY - 16-bit and
rlm@1 44 * 7AAAAAAA YYYY - if address contains 16-bit value enable next code
rlm@1 45 * 8AAAAAAA YYYY - 16-bit constant write
rlm@1 46 * 9AAAAAAA YYYY - change decryption (when first code only?)
rlm@1 47 * AAAAAAAA YYYY - if address does not contain 16-bit value enable next code
rlm@1 48 * BAAAAAAA YYYY - if 16-bit < YYYY
rlm@1 49 * CAAAAAAA YYYY - if 16-bit > YYYY
rlm@1 50 * D0000020 YYYY - if button keys equal value enable next code
rlm@1 51 * EAAAAAAA YYYY - increase value stored in address
rlm@1 52 */
rlm@1 53 #define UNKNOWN_CODE -1
rlm@1 54 #define INT_8_BIT_WRITE 0
rlm@1 55 #define INT_16_BIT_WRITE 1
rlm@1 56 #define INT_32_BIT_WRITE 2
rlm@1 57 #define GSA_16_BIT_ROM_PATCH 3
rlm@1 58 #define GSA_8_BIT_GS_WRITE 4
rlm@1 59 #define GSA_16_BIT_GS_WRITE 5
rlm@1 60 #define GSA_32_BIT_GS_WRITE 6
rlm@1 61 #define CBA_IF_KEYS_PRESSED 7
rlm@1 62 #define CBA_IF_TRUE 8
rlm@1 63 #define CBA_SLIDE_CODE 9
rlm@1 64 #define CBA_IF_FALSE 10
rlm@1 65 #define CBA_AND 11
rlm@1 66 #define GSA_8_BIT_GS_WRITE2 12
rlm@1 67 #define GSA_16_BIT_GS_WRITE2 13
rlm@1 68 #define GSA_32_BIT_GS_WRITE2 14
rlm@1 69 #define GSA_16_BIT_ROM_PATCH2 15
rlm@1 70 #define GSA_8_BIT_SLIDE 16
rlm@1 71 #define GSA_16_BIT_SLIDE 17
rlm@1 72 #define GSA_32_BIT_SLIDE 18
rlm@1 73 #define GSA_8_BIT_IF_TRUE 19
rlm@1 74 #define GSA_32_BIT_IF_TRUE 20
rlm@1 75 #define GSA_8_BIT_IF_FALSE 21
rlm@1 76 #define GSA_32_BIT_IF_FALSE 22
rlm@1 77 #define GSA_8_BIT_FILL 23
rlm@1 78 #define GSA_16_BIT_FILL 24
rlm@1 79 #define GSA_8_BIT_IF_TRUE2 25
rlm@1 80 #define GSA_16_BIT_IF_TRUE2 26
rlm@1 81 #define GSA_32_BIT_IF_TRUE2 27
rlm@1 82 #define GSA_8_BIT_IF_FALSE2 28
rlm@1 83 #define GSA_16_BIT_IF_FALSE2 29
rlm@1 84 #define GSA_32_BIT_IF_FALSE2 30
rlm@1 85 #define GSA_SLOWDOWN 31
rlm@1 86 #define CBA_ADD 32
rlm@1 87 #define CBA_OR 33
rlm@1 88 #define CBA_LT 34
rlm@1 89 #define CBA_GT 35
rlm@1 90 #define CBA_SUPER 36
rlm@1 91
rlm@1 92 CheatsData cheatsList[100];
rlm@1 93 int cheatsNumber = 0;
rlm@1 94
rlm@1 95 u8 cheatsCBASeedBuffer[0x30];
rlm@1 96 u32 cheatsCBASeed[4];
rlm@1 97 u32 cheatsCBATemporaryValue = 0;
rlm@1 98 u16 cheatsCBATable[256];
rlm@1 99 bool cheatsCBATableGenerated = false;
rlm@1 100
rlm@1 101 u8 cheatsCBACurrentSeed[12] = {
rlm@1 102 0x00, 0x00, 0x00, 0x00,
rlm@1 103 0x00, 0x00, 0x00, 0x00,
rlm@1 104 0x00, 0x00, 0x00, 0x00
rlm@1 105 };
rlm@1 106
rlm@1 107 #define CHEAT_IS_HEX(a) (((a) >= 'A' && (a) <= 'F') || ((a) >= '0' && (a) <= '9'))
rlm@1 108
rlm@1 109 #define CHEAT_PATCH_ROM_16BIT(a, v) \
rlm@1 110 WRITE16LE(((u16 *)&rom[(a) & 0x1ffffff]), v);
rlm@1 111
rlm@1 112 static bool isMultilineWithData(int i)
rlm@1 113 {
rlm@1 114 // we consider it a multiline code if it has more than one line of data
rlm@1 115 // otherwise, it can still be considered a single code
rlm@1 116 if (i < cheatsNumber && i >= 0)
rlm@1 117 switch (cheatsList[i].size)
rlm@1 118 {
rlm@1 119 case INT_8_BIT_WRITE:
rlm@1 120 case INT_16_BIT_WRITE:
rlm@1 121 case INT_32_BIT_WRITE:
rlm@1 122 case GSA_16_BIT_ROM_PATCH:
rlm@1 123 case GSA_8_BIT_GS_WRITE:
rlm@1 124 case GSA_16_BIT_GS_WRITE:
rlm@1 125 case GSA_32_BIT_GS_WRITE:
rlm@1 126 case CBA_AND:
rlm@1 127 case CBA_IF_KEYS_PRESSED:
rlm@1 128 case CBA_IF_TRUE:
rlm@1 129 case CBA_IF_FALSE:
rlm@1 130 case GSA_8_BIT_IF_TRUE:
rlm@1 131 case GSA_32_BIT_IF_TRUE:
rlm@1 132 case GSA_8_BIT_IF_FALSE:
rlm@1 133 case GSA_32_BIT_IF_FALSE:
rlm@1 134 case GSA_8_BIT_FILL:
rlm@1 135 case GSA_16_BIT_FILL:
rlm@1 136 case GSA_8_BIT_IF_TRUE2:
rlm@1 137 case GSA_16_BIT_IF_TRUE2:
rlm@1 138 case GSA_32_BIT_IF_TRUE2:
rlm@1 139 case GSA_8_BIT_IF_FALSE2:
rlm@1 140 case GSA_16_BIT_IF_FALSE2:
rlm@1 141 case GSA_32_BIT_IF_FALSE2:
rlm@1 142 case GSA_SLOWDOWN:
rlm@1 143 case CBA_ADD:
rlm@1 144 case CBA_OR:
rlm@1 145 return false;
rlm@1 146 // the codes below have two lines of data
rlm@1 147 case CBA_SLIDE_CODE:
rlm@1 148 case GSA_8_BIT_GS_WRITE2:
rlm@1 149 case GSA_16_BIT_GS_WRITE2:
rlm@1 150 case GSA_32_BIT_GS_WRITE2:
rlm@1 151 case GSA_16_BIT_ROM_PATCH2:
rlm@1 152 case GSA_8_BIT_SLIDE:
rlm@1 153 case GSA_16_BIT_SLIDE:
rlm@1 154 case GSA_32_BIT_SLIDE:
rlm@1 155 case CBA_LT:
rlm@1 156 case CBA_GT:
rlm@1 157 case CBA_SUPER:
rlm@1 158 return true;
rlm@1 159 }
rlm@1 160 return false;
rlm@1 161 }
rlm@1 162
rlm@1 163 static int getCodeLength(int num)
rlm@1 164 {
rlm@1 165 if (num >= cheatsNumber || num < 0)
rlm@1 166 return 1;
rlm@1 167
rlm@1 168 // this is for all the codes that are true multiline
rlm@1 169 switch (cheatsList[num].size)
rlm@1 170 {
rlm@1 171 case INT_8_BIT_WRITE:
rlm@1 172 case INT_16_BIT_WRITE:
rlm@1 173 case INT_32_BIT_WRITE:
rlm@1 174 case GSA_16_BIT_ROM_PATCH:
rlm@1 175 case GSA_8_BIT_GS_WRITE:
rlm@1 176 case GSA_16_BIT_GS_WRITE:
rlm@1 177 case GSA_32_BIT_GS_WRITE:
rlm@1 178 case CBA_AND:
rlm@1 179 case GSA_8_BIT_FILL:
rlm@1 180 case GSA_16_BIT_FILL:
rlm@1 181 case GSA_SLOWDOWN:
rlm@1 182 case CBA_ADD:
rlm@1 183 case CBA_OR:
rlm@1 184 return 1;
rlm@1 185 case CBA_IF_KEYS_PRESSED:
rlm@1 186 case CBA_IF_TRUE:
rlm@1 187 case CBA_IF_FALSE:
rlm@1 188 case CBA_SLIDE_CODE:
rlm@1 189 case GSA_8_BIT_GS_WRITE2:
rlm@1 190 case GSA_16_BIT_GS_WRITE2:
rlm@1 191 case GSA_32_BIT_GS_WRITE2:
rlm@1 192 case GSA_16_BIT_ROM_PATCH2:
rlm@1 193 case GSA_8_BIT_SLIDE:
rlm@1 194 case GSA_16_BIT_SLIDE:
rlm@1 195 case GSA_32_BIT_SLIDE:
rlm@1 196 case GSA_8_BIT_IF_TRUE:
rlm@1 197 case GSA_32_BIT_IF_TRUE:
rlm@1 198 case GSA_8_BIT_IF_FALSE:
rlm@1 199 case GSA_32_BIT_IF_FALSE:
rlm@1 200 case CBA_LT:
rlm@1 201 case CBA_GT:
rlm@1 202 return 2;
rlm@1 203 case GSA_8_BIT_IF_TRUE2:
rlm@1 204 case GSA_16_BIT_IF_TRUE2:
rlm@1 205 case GSA_32_BIT_IF_TRUE2:
rlm@1 206 case GSA_8_BIT_IF_FALSE2:
rlm@1 207 case GSA_16_BIT_IF_FALSE2:
rlm@1 208 case GSA_32_BIT_IF_FALSE2:
rlm@1 209 return 3;
rlm@1 210 case CBA_SUPER:
rlm@1 211 return (cheatsList[num].value+5)/6;
rlm@1 212 }
rlm@1 213 return 1;
rlm@1 214 }
rlm@1 215
rlm@1 216 int cheatsCheckKeys(u32 keys, u32 extended)
rlm@1 217 {
rlm@1 218 int ticks = 0;
rlm@1 219 for (int i = 0; i < cheatsNumber; i++)
rlm@1 220 {
rlm@1 221 if (!cheatsList[i].enabled)
rlm@1 222 {
rlm@1 223 // make sure we skip other lines in this code
rlm@1 224 i += getCodeLength(i)-1;
rlm@1 225 continue;
rlm@1 226 }
rlm@1 227 switch (cheatsList[i].size)
rlm@1 228 {
rlm@1 229 case INT_8_BIT_WRITE:
rlm@1 230 CPUWriteByte(cheatsList[i].address, cheatsList[i].value);
rlm@1 231 break;
rlm@1 232 case INT_16_BIT_WRITE:
rlm@1 233 CPUWriteHalfWord(cheatsList[i].address, cheatsList[i].value);
rlm@1 234 break;
rlm@1 235 case INT_32_BIT_WRITE:
rlm@1 236 CPUWriteMemory(cheatsList[i].address, cheatsList[i].value);
rlm@1 237 break;
rlm@1 238 case GSA_16_BIT_ROM_PATCH:
rlm@1 239 if ((cheatsList[i].status & 1) == 0)
rlm@1 240 {
rlm@1 241 if (CPUReadHalfWord(cheatsList[i].address) != cheatsList[i].value)
rlm@1 242 {
rlm@1 243 cheatsList[i].oldValue = CPUReadHalfWord(cheatsList[i].address);
rlm@1 244 cheatsList[i].status |= 1;
rlm@1 245 CHEAT_PATCH_ROM_16BIT(cheatsList[i].address, cheatsList[i].value);
rlm@1 246 }
rlm@1 247 }
rlm@1 248 break;
rlm@1 249 case GSA_8_BIT_GS_WRITE:
rlm@1 250 if (extended & 4)
rlm@1 251 {
rlm@1 252 CPUWriteByte(cheatsList[i].address, cheatsList[i].value);
rlm@1 253 }
rlm@1 254 break;
rlm@1 255 case GSA_16_BIT_GS_WRITE:
rlm@1 256 if (extended & 4)
rlm@1 257 {
rlm@1 258 CPUWriteHalfWord(cheatsList[i].address, cheatsList[i].value);
rlm@1 259 }
rlm@1 260 break;
rlm@1 261 case GSA_32_BIT_GS_WRITE:
rlm@1 262 if (extended & 4)
rlm@1 263 {
rlm@1 264 CPUWriteMemory(cheatsList[i].address, cheatsList[i].value);
rlm@1 265 }
rlm@1 266 break;
rlm@1 267 case CBA_IF_KEYS_PRESSED:
rlm@1 268 {
rlm@1 269 u16 value = cheatsList[i].value;
rlm@1 270 u32 addr = cheatsList[i].address;
rlm@1 271 if ((addr & 0x30) == 0x20)
rlm@1 272 {
rlm@1 273 if ((keys & value) != value)
rlm@1 274 {
rlm@1 275 i++;
rlm@1 276 }
rlm@1 277 }
rlm@1 278 else if ((addr & 0x30) == 0x10)
rlm@1 279 {
rlm@1 280 if ((keys & value) == value)
rlm@1 281 {
rlm@1 282 i++;
rlm@1 283 }
rlm@1 284 }
rlm@1 285 break;
rlm@1 286 }
rlm@1 287 case CBA_IF_TRUE:
rlm@1 288 if (CPUReadHalfWord(cheatsList[i].address) != cheatsList[i].value)
rlm@1 289 {
rlm@1 290 i++;
rlm@1 291 }
rlm@1 292 break;
rlm@1 293 case CBA_SLIDE_CODE:
rlm@1 294 {
rlm@1 295 u32 address = cheatsList[i].address;
rlm@1 296 u16 value = cheatsList[i].value;
rlm@1 297 i++;
rlm@1 298 if (i < cheatsNumber)
rlm@1 299 {
rlm@1 300 int count = (cheatsList[i].address & 0xFFFF);
rlm@1 301 u16 vinc = (cheatsList[i].address >> 16) & 0xFFFF;
rlm@1 302 int inc = cheatsList[i].value;
rlm@1 303
rlm@1 304 for (int x = 0; x < count; x++)
rlm@1 305 {
rlm@1 306 CPUWriteHalfWord(address, value);
rlm@1 307 address += inc;
rlm@1 308 value += vinc;
rlm@1 309 }
rlm@1 310 }
rlm@1 311 break;
rlm@1 312 }
rlm@1 313 case CBA_IF_FALSE:
rlm@1 314 if (CPUReadHalfWord(cheatsList[i].address) == cheatsList[i].value)
rlm@1 315 {
rlm@1 316 i++;
rlm@1 317 }
rlm@1 318 break;
rlm@1 319 case CBA_AND:
rlm@1 320 CPUWriteHalfWord(cheatsList[i].address,
rlm@1 321 CPUReadHalfWord(cheatsList[i].address) &
rlm@1 322 cheatsList[i].value);
rlm@1 323 break;
rlm@1 324 case GSA_8_BIT_GS_WRITE2:
rlm@1 325 i++;
rlm@1 326 if (i < cheatsNumber)
rlm@1 327 {
rlm@1 328 if (extended & 4)
rlm@1 329 {
rlm@1 330 CPUWriteByte(cheatsList[i-1].value, cheatsList[i].address);
rlm@1 331 }
rlm@1 332 }
rlm@1 333 break;
rlm@1 334 case GSA_16_BIT_GS_WRITE2:
rlm@1 335 i++;
rlm@1 336 if (i < cheatsNumber)
rlm@1 337 {
rlm@1 338 if (extended & 4)
rlm@1 339 {
rlm@1 340 CPUWriteHalfWord(cheatsList[i-1].value, cheatsList[i].address);
rlm@1 341 }
rlm@1 342 }
rlm@1 343 break;
rlm@1 344 case GSA_32_BIT_GS_WRITE2:
rlm@1 345 i++;
rlm@1 346 if (i < cheatsNumber)
rlm@1 347 {
rlm@1 348 if (extended & 4)
rlm@1 349 {
rlm@1 350 CPUWriteMemory(cheatsList[i-1].value, cheatsList[i].address);
rlm@1 351 }
rlm@1 352 }
rlm@1 353 break;
rlm@1 354 case GSA_16_BIT_ROM_PATCH2:
rlm@1 355 i++;
rlm@1 356 if (i < cheatsNumber)
rlm@1 357 {
rlm@1 358 if ((cheatsList[i-1].status & 1) == 0)
rlm@1 359 {
rlm@1 360 u32 addr = ((cheatsList[i-1].value & 0x00FFFFFF) << 1) + 0x8000000;
rlm@1 361 if (CPUReadHalfWord(addr) != (cheatsList[i].address & 0xFFFF))
rlm@1 362 {
rlm@1 363 cheatsList[i-1].oldValue = CPUReadHalfWord(addr);
rlm@1 364 cheatsList[i-1].status |= 1;
rlm@1 365 CHEAT_PATCH_ROM_16BIT(addr, cheatsList[i].address & 0xFFFF);
rlm@1 366 }
rlm@1 367 }
rlm@1 368 }
rlm@1 369 break;
rlm@1 370 case GSA_8_BIT_SLIDE:
rlm@1 371 i++;
rlm@1 372 if (i < cheatsNumber)
rlm@1 373 {
rlm@1 374 u32 addr = cheatsList[i-1].value;
rlm@1 375 u8 value = cheatsList[i].address;
rlm@1 376 int vinc = (cheatsList[i].value >> 24) & 255;
rlm@1 377 int count = (cheatsList[i].value >> 16) & 255;
rlm@1 378 int ainc = (cheatsList[i].value & 0xffff);
rlm@1 379 while (count > 0)
rlm@1 380 {
rlm@1 381 CPUWriteByte(addr, value);
rlm@1 382 value += vinc;
rlm@1 383 addr += ainc;
rlm@1 384 count--;
rlm@1 385 }
rlm@1 386 }
rlm@1 387 break;
rlm@1 388 case GSA_16_BIT_SLIDE:
rlm@1 389 i++;
rlm@1 390 if (i < cheatsNumber)
rlm@1 391 {
rlm@1 392 u32 addr = cheatsList[i-1].value;
rlm@1 393 u16 value = cheatsList[i].address;
rlm@1 394 int vinc = (cheatsList[i].value >> 24) & 255;
rlm@1 395 int count = (cheatsList[i].value >> 16) & 255;
rlm@1 396 int ainc = (cheatsList[i].value & 0xffff)*2;
rlm@1 397 while (count > 0)
rlm@1 398 {
rlm@1 399 CPUWriteHalfWord(addr, value);
rlm@1 400 value += vinc;
rlm@1 401 addr += ainc;
rlm@1 402 count--;
rlm@1 403 }
rlm@1 404 }
rlm@1 405 break;
rlm@1 406 case GSA_32_BIT_SLIDE:
rlm@1 407 i++;
rlm@1 408 if (i < cheatsNumber)
rlm@1 409 {
rlm@1 410 u32 addr = cheatsList[i-1].value;
rlm@1 411 u32 value = cheatsList[i].address;
rlm@1 412 int vinc = (cheatsList[i].value >> 24) & 255;
rlm@1 413 int count = (cheatsList[i].value >> 16) & 255;
rlm@1 414 int ainc = (cheatsList[i].value & 0xffff)*4;
rlm@1 415 while (count > 0)
rlm@1 416 {
rlm@1 417 CPUWriteMemory(addr, value);
rlm@1 418 value += vinc;
rlm@1 419 addr += ainc;
rlm@1 420 count--;
rlm@1 421 }
rlm@1 422 }
rlm@1 423 break;
rlm@1 424 case GSA_8_BIT_IF_TRUE:
rlm@1 425 if (CPUReadByte(cheatsList[i].address) != cheatsList[i].value)
rlm@1 426 {
rlm@1 427 i++;
rlm@1 428 }
rlm@1 429 break;
rlm@1 430 case GSA_32_BIT_IF_TRUE:
rlm@1 431 if (CPUReadMemory(cheatsList[i].address) != cheatsList[i].value)
rlm@1 432 {
rlm@1 433 i++;
rlm@1 434 }
rlm@1 435 break;
rlm@1 436 case GSA_8_BIT_IF_FALSE:
rlm@1 437 if (CPUReadByte(cheatsList[i].address) == cheatsList[i].value)
rlm@1 438 {
rlm@1 439 i++;
rlm@1 440 }
rlm@1 441 break;
rlm@1 442 case GSA_32_BIT_IF_FALSE:
rlm@1 443 if (CPUReadMemory(cheatsList[i].address) == cheatsList[i].value)
rlm@1 444 {
rlm@1 445 i++;
rlm@1 446 }
rlm@1 447 break;
rlm@1 448 case GSA_8_BIT_FILL:
rlm@1 449 {
rlm@1 450 u32 addr = cheatsList[i].address;
rlm@1 451 u8 v = cheatsList[i].value & 0xff;
rlm@1 452 u32 end = addr + (cheatsList[i].value >> 8);
rlm@1 453 do
rlm@1 454 {
rlm@1 455 CPUWriteByte(addr, v);
rlm@1 456 addr++;
rlm@1 457 }
rlm@1 458 while (addr <= end);
rlm@1 459 break;
rlm@1 460 }
rlm@1 461 case GSA_16_BIT_FILL:
rlm@1 462 {
rlm@1 463 u32 addr = cheatsList[i].address;
rlm@1 464 u16 v = cheatsList[i].value & 0xffff;
rlm@1 465 u32 end = addr + ((cheatsList[i].value >> 16) << 1);
rlm@1 466 do
rlm@1 467 {
rlm@1 468 CPUWriteHalfWord(addr, v);
rlm@1 469 addr += 2;
rlm@1 470 }
rlm@1 471 while (addr <= end);
rlm@1 472 break;
rlm@1 473 }
rlm@1 474 case GSA_8_BIT_IF_TRUE2:
rlm@1 475 if (CPUReadByte(cheatsList[i].address) != cheatsList[i].value)
rlm@1 476 {
rlm@1 477 i += 2;
rlm@1 478 }
rlm@1 479 break;
rlm@1 480 case GSA_16_BIT_IF_TRUE2:
rlm@1 481 if (CPUReadHalfWord(cheatsList[i].address) != cheatsList[i].value)
rlm@1 482 {
rlm@1 483 i += 2;
rlm@1 484 }
rlm@1 485 break;
rlm@1 486 case GSA_32_BIT_IF_TRUE2:
rlm@1 487 if (CPUReadMemory(cheatsList[i].address) != cheatsList[i].value)
rlm@1 488 {
rlm@1 489 i += 2;
rlm@1 490 }
rlm@1 491 break;
rlm@1 492 case GSA_8_BIT_IF_FALSE2:
rlm@1 493 if (CPUReadByte(cheatsList[i].address) == cheatsList[i].value)
rlm@1 494 {
rlm@1 495 i += 2;
rlm@1 496 }
rlm@1 497 break;
rlm@1 498 case GSA_16_BIT_IF_FALSE2:
rlm@1 499 if (CPUReadHalfWord(cheatsList[i].address) == cheatsList[i].value)
rlm@1 500 {
rlm@1 501 i += 2;
rlm@1 502 }
rlm@1 503 break;
rlm@1 504 case GSA_32_BIT_IF_FALSE2:
rlm@1 505 if (CPUReadMemory(cheatsList[i].address) == cheatsList[i].value)
rlm@1 506 {
rlm@1 507 i += 2;
rlm@1 508 }
rlm@1 509 break;
rlm@1 510 case GSA_SLOWDOWN:
rlm@1 511 // check if button was pressed and released, if so toggle our state
rlm@1 512 if ((cheatsList[i].status & 4) && !(extended & 4))
rlm@1 513 cheatsList[i].status ^= 1;
rlm@1 514 if (extended & 4)
rlm@1 515 cheatsList[i].status |= 4;
rlm@1 516 else
rlm@1 517 cheatsList[i].status &= ~4;
rlm@1 518
rlm@1 519 if (cheatsList[i].status & 1)
rlm@1 520 ticks += 2*256*((cheatsList[i].value >> 8) & 255);
rlm@1 521 break;
rlm@1 522 case CBA_ADD:
rlm@1 523 CPUWriteHalfWord(cheatsList[i].address,
rlm@1 524 CPUReadHalfWord(cheatsList[i].address) +
rlm@1 525 (u16)cheatsList[i].value);
rlm@1 526 break;
rlm@1 527 case CBA_OR:
rlm@1 528 CPUWriteHalfWord(cheatsList[i].address,
rlm@1 529 CPUReadHalfWord(cheatsList[i].address) |
rlm@1 530 cheatsList[i].value);
rlm@1 531 break;
rlm@1 532 case CBA_LT:
rlm@1 533 if (CPUReadHalfWord(cheatsList[i].address) >= cheatsList[i].value)
rlm@1 534 i++;
rlm@1 535 break;
rlm@1 536 case CBA_GT:
rlm@1 537 if (CPUReadHalfWord(cheatsList[i].address) <= cheatsList[i].value)
rlm@1 538 i++;
rlm@1 539 break;
rlm@1 540 case CBA_SUPER:
rlm@1 541 {
rlm@1 542 int count = 2*cheatsList[i].value;
rlm@1 543 u32 address = cheatsList[i].address;
rlm@1 544 for (int x = 0; x < count; x++)
rlm@1 545 {
rlm@1 546 u8 b;
rlm@1 547 int res = x % 6;
rlm@1 548 if (res < 4)
rlm@1 549 b = (cheatsList[i].address >> (24-8*res)) & 0xFF;
rlm@1 550 else
rlm@1 551 b = (cheatsList[i].value >> (8 - 8*(res-4))) & 0x0FF;
rlm@1 552 CPUWriteByte(address, b);
rlm@1 553 address++;
rlm@1 554 if (x && !res)
rlm@1 555 i++;
rlm@1 556 }
rlm@1 557 if (count % 6)
rlm@1 558 i++;
rlm@1 559 break;
rlm@1 560 }
rlm@1 561 }
rlm@1 562 }
rlm@1 563 return ticks;
rlm@1 564 }
rlm@1 565
rlm@1 566 void cheatsAdd(const char *codeStr,
rlm@1 567 const char *desc,
rlm@1 568 u32 address,
rlm@1 569 u32 value,
rlm@1 570 int code,
rlm@1 571 int size)
rlm@1 572 {
rlm@1 573 if (cheatsNumber < 100)
rlm@1 574 {
rlm@1 575 int x = cheatsNumber;
rlm@1 576 cheatsList[x].code = code;
rlm@1 577 cheatsList[x].size = size;
rlm@1 578 cheatsList[x].address = address;
rlm@1 579 cheatsList[x].value = value;
rlm@1 580 strcpy(cheatsList[x].codestring, codeStr);
rlm@1 581 strcpy(cheatsList[x].desc, desc);
rlm@1 582 cheatsList[x].enabled = true;
rlm@1 583 cheatsList[x].status = 0;
rlm@1 584
rlm@1 585 // we only store the old value for this simple codes. ROM patching
rlm@1 586 // is taken care when it actually patches the ROM
rlm@1 587 switch (cheatsList[x].size)
rlm@1 588 {
rlm@1 589 case INT_8_BIT_WRITE:
rlm@1 590 cheatsList[x].oldValue = CPUReadByte(address);
rlm@1 591 break;
rlm@1 592 case INT_16_BIT_WRITE:
rlm@1 593 cheatsList[x].oldValue = CPUReadHalfWord(address);
rlm@1 594 break;
rlm@1 595 case INT_32_BIT_WRITE:
rlm@1 596 cheatsList[x].oldValue = CPUReadMemory(address);
rlm@1 597 break;
rlm@1 598 }
rlm@1 599 cheatsNumber++;
rlm@1 600 }
rlm@1 601 }
rlm@1 602
rlm@1 603 void cheatsDelete(int number, bool restore)
rlm@1 604 {
rlm@1 605 if (number < cheatsNumber && number >= 0)
rlm@1 606 {
rlm@1 607 int x = number;
rlm@1 608
rlm@1 609 if (restore)
rlm@1 610 {
rlm@1 611 switch (cheatsList[x].size)
rlm@1 612 {
rlm@1 613 case INT_8_BIT_WRITE:
rlm@1 614 CPUWriteByte(cheatsList[x].address, (u8)cheatsList[x].oldValue);
rlm@1 615 break;
rlm@1 616 case INT_16_BIT_WRITE:
rlm@1 617 CPUWriteHalfWord(cheatsList[x].address, (u16)cheatsList[x].oldValue);
rlm@1 618 break;
rlm@1 619 case INT_32_BIT_WRITE:
rlm@1 620 CPUWriteMemory(cheatsList[x].address, cheatsList[x].oldValue);
rlm@1 621 break;
rlm@1 622 case GSA_16_BIT_ROM_PATCH:
rlm@1 623 if (cheatsList[x].status & 1)
rlm@1 624 {
rlm@1 625 cheatsList[x].status &= ~1;
rlm@1 626 CHEAT_PATCH_ROM_16BIT(cheatsList[x].address,
rlm@1 627 cheatsList[x].oldValue);
rlm@1 628 }
rlm@1 629 break;
rlm@1 630 case GSA_16_BIT_ROM_PATCH2:
rlm@1 631 if (cheatsList[x].status & 1)
rlm@1 632 {
rlm@1 633 cheatsList[x].status &= ~1;
rlm@1 634 CHEAT_PATCH_ROM_16BIT(((cheatsList[x].value & 0x00FFFFFF) << 1)+
rlm@1 635 0x8000000,
rlm@1 636 cheatsList[x].oldValue);
rlm@1 637 }
rlm@1 638 break;
rlm@1 639 }
rlm@1 640 }
rlm@1 641 if ((x+1) < cheatsNumber)
rlm@1 642 {
rlm@1 643 memcpy(&cheatsList[x], &cheatsList[x+1], sizeof(CheatsData)*
rlm@1 644 (cheatsNumber-x-1));
rlm@1 645 }
rlm@1 646 cheatsNumber--;
rlm@1 647 }
rlm@1 648 }
rlm@1 649
rlm@1 650 void cheatsDeleteAll(bool restore)
rlm@1 651 {
rlm@1 652 for (int i = cheatsNumber-1; i >= 0; i--)
rlm@1 653 {
rlm@1 654 cheatsDelete(i, restore);
rlm@1 655 }
rlm@1 656 }
rlm@1 657
rlm@1 658 void cheatsEnable(int i)
rlm@1 659 {
rlm@1 660 if (i >= 0 && i < cheatsNumber)
rlm@1 661 {
rlm@1 662 cheatsList[i].enabled = true;
rlm@1 663 }
rlm@1 664 }
rlm@1 665
rlm@1 666 void cheatsDisable(int i)
rlm@1 667 {
rlm@1 668 if (i >= 0 && i < cheatsNumber)
rlm@1 669 {
rlm@1 670 switch (cheatsList[i].size)
rlm@1 671 {
rlm@1 672 case GSA_16_BIT_ROM_PATCH:
rlm@1 673 if (cheatsList[i].status & 1)
rlm@1 674 {
rlm@1 675 cheatsList[i].status &= ~1;
rlm@1 676 CHEAT_PATCH_ROM_16BIT(cheatsList[i].address,
rlm@1 677 cheatsList[i].oldValue);
rlm@1 678 }
rlm@1 679 break;
rlm@1 680 case GSA_16_BIT_ROM_PATCH2:
rlm@1 681 if (cheatsList[i].status & 1)
rlm@1 682 {
rlm@1 683 cheatsList[i].status &= ~1;
rlm@1 684 CHEAT_PATCH_ROM_16BIT(((cheatsList[i].value & 0x00FFFFFF) << 1)+
rlm@1 685 0x8000000,
rlm@1 686 cheatsList[i].oldValue);
rlm@1 687 }
rlm@1 688 break;
rlm@1 689 }
rlm@1 690 cheatsList[i].enabled = false;
rlm@1 691 }
rlm@1 692 }
rlm@1 693
rlm@1 694 bool cheatsVerifyCheatCode(const char *code, const char *desc)
rlm@1 695 {
rlm@1 696 int len = strlen(code);
rlm@1 697 if (len != 11 && len != 13 && len != 17)
rlm@1 698 {
rlm@1 699 systemMessage(MSG_INVALID_CHEAT_CODE, N_("Invalid cheat code '%s'"), code);
rlm@1 700 return false;
rlm@1 701 }
rlm@1 702
rlm@1 703 if (code[8] != ':')
rlm@1 704 {
rlm@1 705 systemMessage(MSG_INVALID_CHEAT_CODE, N_("Invalid cheat code '%s'"), code);
rlm@1 706 return false;
rlm@1 707 }
rlm@1 708
rlm@1 709 int i;
rlm@1 710 for (i = 0; i < 8; i++)
rlm@1 711 {
rlm@1 712 if (!CHEAT_IS_HEX(code[i]))
rlm@1 713 {
rlm@1 714 // wrong cheat
rlm@1 715 systemMessage(MSG_INVALID_CHEAT_CODE,
rlm@1 716 N_("Invalid cheat code '%s'"), code);
rlm@1 717 return false;
rlm@1 718 }
rlm@1 719 }
rlm@1 720 for (i = 9; i < len; i++)
rlm@1 721 {
rlm@1 722 if (!CHEAT_IS_HEX(code[i]))
rlm@1 723 {
rlm@1 724 // wrong cheat
rlm@1 725 systemMessage(MSG_INVALID_CHEAT_CODE,
rlm@1 726 N_("Invalid cheat code '%s'"), code);
rlm@1 727 return false;
rlm@1 728 }
rlm@1 729 }
rlm@1 730
rlm@1 731 u32 address = 0;
rlm@1 732 u32 value = 0;
rlm@1 733
rlm@1 734 char buffer[10];
rlm@1 735 strncpy(buffer, code, 8);
rlm@1 736 buffer[8] = 0;
rlm@1 737 sscanf(buffer, "%x", &address);
rlm@1 738
rlm@1 739 switch (address >> 24)
rlm@1 740 {
rlm@1 741 case 2:
rlm@1 742 case 3:
rlm@1 743 break;
rlm@1 744 default:
rlm@1 745 systemMessage(MSG_INVALID_CHEAT_CODE_ADDRESS,
rlm@1 746 N_("Invalid cheat code address: %08x"),
rlm@1 747 address);
rlm@1 748 return false;
rlm@1 749 }
rlm@1 750
rlm@1 751 strncpy(buffer, &code[9], 8);
rlm@1 752 sscanf(buffer, "%x", &value);
rlm@1 753 int type = 0;
rlm@1 754 if (len == 13)
rlm@1 755 type = 1;
rlm@1 756 if (len == 17)
rlm@1 757 type = 2;
rlm@1 758 cheatsAdd(code, desc, address, value, type, type);
rlm@1 759 return true;
rlm@1 760 }
rlm@1 761
rlm@1 762 void cheatsAddCheatCode(const char *code, const char *desc)
rlm@1 763 {
rlm@1 764 cheatsVerifyCheatCode(code, desc);
rlm@1 765 }
rlm@1 766
rlm@1 767 void cheatsDecryptGSACode(u32& address, u32& value, bool v3)
rlm@1 768 {
rlm@1 769 u32 rollingseed = 0xC6EF3720;
rlm@1 770 u32 seeds_v1[] = { 0x09F4FBBD, 0x9681884A, 0x352027E9, 0xF3DEE5A7 };
rlm@1 771 u32 seeds_v3[] = { 0x7AA9648F, 0x7FAE6994, 0xC0EFAAD5, 0x42712C57 };
rlm@1 772 u32 *seeds = v3 ? seeds_v3 : seeds_v1;
rlm@1 773
rlm@1 774 int bitsleft = 32;
rlm@1 775 while (bitsleft > 0)
rlm@1 776 {
rlm@1 777 value -= ((((address << 4) + seeds[2]) ^ (address + rollingseed)) ^
rlm@1 778 ((address >> 5) + seeds[3]));
rlm@1 779 address -= ((((value << 4) + seeds[0]) ^ (value + rollingseed)) ^
rlm@1 780 ((value >> 5) + seeds[1]));
rlm@1 781 rollingseed -= 0x9E3779B9;
rlm@1 782 bitsleft--;
rlm@1 783 }
rlm@1 784 }
rlm@1 785
rlm@1 786 void cheatsAddGSACode(const char *code, const char *desc, bool v3)
rlm@1 787 {
rlm@1 788 if (strlen(code) != 16)
rlm@1 789 {
rlm@1 790 // wrong cheat
rlm@1 791 systemMessage(MSG_INVALID_GSA_CODE,
rlm@1 792 N_("Invalid GSA code. Format is XXXXXXXXYYYYYYYY"));
rlm@1 793 return;
rlm@1 794 }
rlm@1 795
rlm@1 796 int i;
rlm@1 797 for (i = 0; i < 16; i++)
rlm@1 798 {
rlm@1 799 if (!CHEAT_IS_HEX(code[i]))
rlm@1 800 {
rlm@1 801 // wrong cheat
rlm@1 802 systemMessage(MSG_INVALID_GSA_CODE,
rlm@1 803 N_("Invalid GSA code. Format is XXXXXXXXYYYYYYYY"));
rlm@1 804 return;
rlm@1 805 }
rlm@1 806 }
rlm@1 807
rlm@1 808 char buffer[10];
rlm@1 809 strncpy(buffer, code, 8);
rlm@1 810 buffer[8] = 0;
rlm@1 811 u32 address;
rlm@1 812 sscanf(buffer, "%x", &address);
rlm@1 813 strncpy(buffer, &code[8], 8);
rlm@1 814 buffer[8] = 0;
rlm@1 815 u32 value;
rlm@1 816 sscanf(buffer, "%x", &value);
rlm@1 817
rlm@1 818 cheatsDecryptGSACode(address, value, v3);
rlm@1 819
rlm@1 820 if (value == 0x1DC0DE)
rlm@1 821 {
rlm@1 822 u32 gamecode = READ32LE(((u32 *)&rom[0xac]));
rlm@1 823 if (gamecode != address)
rlm@1 824 {
rlm@1 825 char buffer[5];
rlm@1 826 *((u32 *)buffer) = address;
rlm@1 827 buffer[4] = 0;
rlm@1 828 char buffer2[5];
rlm@1 829 *((u32 *)buffer2) = READ32LE(((u32 *)&rom[0xac]));
rlm@1 830 buffer2[4] = 0;
rlm@1 831 systemMessage(MSG_GBA_CODE_WARNING,
rlm@1 832 N_("Warning: cheats are for game %s. Current game is %s.\nCodes may not work correctly."),
rlm@1 833 buffer, buffer2);
rlm@1 834 }
rlm@1 835 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, v3 ? 257 : 256,
rlm@1 836 UNKNOWN_CODE);
rlm@1 837 return;
rlm@1 838 }
rlm@1 839 if (isMultilineWithData(cheatsNumber-1))
rlm@1 840 {
rlm@1 841 cheatsAdd(code, desc, address, value, v3 ? 257 : 256, UNKNOWN_CODE);
rlm@1 842 return;
rlm@1 843 }
rlm@1 844 if (v3)
rlm@1 845 {
rlm@1 846 int type = (address >> 25) & 127;
rlm@1 847 u32 addr = (address & 0x00F00000) << 4 | (address & 0x0003FFFF);
rlm@1 848 switch (type)
rlm@1 849 {
rlm@1 850 case 0x00:
rlm@1 851 if (address == 0)
rlm@1 852 {
rlm@1 853 type = (value >> 25) & 127;
rlm@1 854 addr = (value & 0x00F00000) << 4 | (value & 0x0003FFFF);
rlm@1 855 switch (type)
rlm@1 856 {
rlm@1 857 case 0x04:
rlm@1 858 cheatsAdd(code, desc, 0, value & 0x00FFFFFF, 257, GSA_SLOWDOWN);
rlm@1 859 break;
rlm@1 860 case 0x08:
rlm@1 861 cheatsAdd(code, desc, 0, addr, 257, GSA_8_BIT_GS_WRITE2);
rlm@1 862 break;
rlm@1 863 case 0x09:
rlm@1 864 cheatsAdd(code, desc, 0, addr, 257, GSA_16_BIT_GS_WRITE2);
rlm@1 865 break;
rlm@1 866 case 0x0a:
rlm@1 867 cheatsAdd(code, desc, 0, addr, 257, GSA_32_BIT_GS_WRITE2);
rlm@1 868 break;
rlm@1 869 case 0x0c:
rlm@1 870 case 0x0d:
rlm@1 871 case 0x0e:
rlm@1 872 case 0x0f:
rlm@1 873 cheatsAdd(code, desc, 0, value & 0x00FFFFFF, 257, GSA_16_BIT_ROM_PATCH2);
rlm@1 874 break;
rlm@1 875 case 0x40:
rlm@1 876 cheatsAdd(code, desc, 0, addr, 257, GSA_8_BIT_SLIDE);
rlm@1 877 break;
rlm@1 878 case 0x41:
rlm@1 879 cheatsAdd(code, desc, 0, addr, 257, GSA_16_BIT_SLIDE);
rlm@1 880 break;
rlm@1 881 case 0x42:
rlm@1 882 cheatsAdd(code, desc, 0, addr, 257, GSA_32_BIT_SLIDE);
rlm@1 883 break;
rlm@1 884 default:
rlm@1 885 cheatsAdd(code, desc, address, value, 257, UNKNOWN_CODE);
rlm@1 886 break;
rlm@1 887 }
rlm@1 888 }
rlm@1 889 else
rlm@1 890 cheatsAdd(code, desc, addr, value, 257, GSA_8_BIT_FILL);
rlm@1 891 break;
rlm@1 892 case 0x01:
rlm@1 893 cheatsAdd(code, desc, addr, value, 257, GSA_16_BIT_FILL);
rlm@1 894 break;
rlm@1 895 case 0x02:
rlm@1 896 cheatsAdd(code, desc, addr, value, 257, INT_32_BIT_WRITE);
rlm@1 897 break;
rlm@1 898 case 0x04:
rlm@1 899 cheatsAdd(code, desc, addr, value, 257, GSA_8_BIT_IF_TRUE);
rlm@1 900 break;
rlm@1 901 case 0x05:
rlm@1 902 cheatsAdd(code, desc, addr, value, 257, CBA_IF_TRUE);
rlm@1 903 break;
rlm@1 904 case 0x06:
rlm@1 905 cheatsAdd(code, desc, addr, value, 257, GSA_32_BIT_IF_TRUE);
rlm@1 906 break;
rlm@1 907 case 0x08:
rlm@1 908 cheatsAdd(code, desc, addr, value, 257, GSA_8_BIT_IF_FALSE);
rlm@1 909 break;
rlm@1 910 case 0x09:
rlm@1 911 cheatsAdd(code, desc, addr, value, 257, CBA_IF_FALSE);
rlm@1 912 break;
rlm@1 913 case 0x0a:
rlm@1 914 cheatsAdd(code, desc, addr, value, 257, GSA_32_BIT_IF_FALSE);
rlm@1 915 break;
rlm@1 916 case 0x24:
rlm@1 917 cheatsAdd(code, desc, addr, value, 257, GSA_8_BIT_IF_TRUE2);
rlm@1 918 break;
rlm@1 919 case 0x25:
rlm@1 920 cheatsAdd(code, desc, addr, value, 257, GSA_16_BIT_IF_TRUE2);
rlm@1 921 break;
rlm@1 922 case 0x26:
rlm@1 923 cheatsAdd(code, desc, addr, value, 257, GSA_32_BIT_IF_TRUE2);
rlm@1 924 break;
rlm@1 925 case 0x28:
rlm@1 926 cheatsAdd(code, desc, addr, value, 257, GSA_8_BIT_IF_FALSE2);
rlm@1 927 break;
rlm@1 928 case 0x29:
rlm@1 929 cheatsAdd(code, desc, addr, value, 257, GSA_16_BIT_IF_FALSE2);
rlm@1 930 break;
rlm@1 931 case 0x2a:
rlm@1 932 cheatsAdd(code, desc, addr, value, 257, GSA_32_BIT_IF_FALSE2);
rlm@1 933 break;
rlm@1 934 default:
rlm@1 935 cheatsAdd(code, desc, address, value, 257, UNKNOWN_CODE);
rlm@1 936 break;
rlm@1 937 }
rlm@1 938 }
rlm@1 939 else
rlm@1 940 {
rlm@1 941 int type = (address >> 28) & 15;
rlm@1 942 switch (type)
rlm@1 943 {
rlm@1 944 case 0:
rlm@1 945 case 1:
rlm@1 946 case 2:
rlm@1 947 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 256, type);
rlm@1 948 break;
rlm@1 949 case 6:
rlm@1 950 address <<= 1;
rlm@1 951 type = (address >> 28) & 15;
rlm@1 952 if (type == 0x0c)
rlm@1 953 {
rlm@1 954 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 256,
rlm@1 955 GSA_16_BIT_ROM_PATCH);
rlm@1 956 break;
rlm@1 957 }
rlm@1 958 // unsupported code
rlm@1 959 cheatsAdd(code, desc, address, value, 256,
rlm@1 960 UNKNOWN_CODE);
rlm@1 961 break;
rlm@1 962 case 8:
rlm@1 963 switch ((address >> 20) & 15)
rlm@1 964 {
rlm@1 965 case 1:
rlm@1 966 cheatsAdd(code, desc, address & 0x0F0FFFFF, value, 256,
rlm@1 967 GSA_8_BIT_GS_WRITE);
rlm@1 968 break;
rlm@1 969 case 2:
rlm@1 970 cheatsAdd(code, desc, address & 0x0F0FFFFF, value, 256,
rlm@1 971 GSA_16_BIT_GS_WRITE);
rlm@1 972 break;
rlm@1 973 case 3:
rlm@1 974 cheatsAdd(code, desc, address & 0x0F0FFFFF, value, 256,
rlm@1 975 GSA_32_BIT_GS_WRITE);
rlm@1 976 case 15:
rlm@1 977 cheatsAdd(code, desc, 0, value & 0xFF00, 256, GSA_SLOWDOWN);
rlm@1 978 break;
rlm@1 979 default:
rlm@1 980 // unsupported code
rlm@1 981 cheatsAdd(code, desc, address, value, 256,
rlm@1 982 UNKNOWN_CODE);
rlm@1 983 break;
rlm@1 984 }
rlm@1 985 break;
rlm@1 986 case 0x0d:
rlm@1 987 if (address != 0xDEADFACE)
rlm@1 988 {
rlm@1 989 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 256,
rlm@1 990 CBA_IF_TRUE);
rlm@1 991 }
rlm@1 992 else
rlm@1 993 cheatsAdd(code, desc, address, value, 256,
rlm@1 994 UNKNOWN_CODE);
rlm@1 995 break;
rlm@1 996 default:
rlm@1 997 // unsupported code
rlm@1 998 cheatsAdd(code, desc, address, value, 256,
rlm@1 999 UNKNOWN_CODE);
rlm@1 1000 break;
rlm@1 1001 }
rlm@1 1002 }
rlm@1 1003 }
rlm@1 1004
rlm@1 1005 bool cheatsImportGSACodeFile(const char *name, int game, bool v3)
rlm@1 1006 {
rlm@1 1007 FILE *f = fopen(name, "rb");
rlm@1 1008 if (!f)
rlm@1 1009 return false;
rlm@1 1010
rlm@1 1011 int games = 0;
rlm@1 1012 int len = 0;
rlm@1 1013 fseek(f, 0x1e, SEEK_CUR);
rlm@1 1014 fread(&games, 1, 4, f);
rlm@1 1015 bool found = false;
rlm@1 1016 int g = 0;
rlm@1 1017 while (games > 0)
rlm@1 1018 {
rlm@1 1019 if (g == game)
rlm@1 1020 {
rlm@1 1021 found = true;
rlm@1 1022 break;
rlm@1 1023 }
rlm@1 1024 fread(&len, 1, 4, f);
rlm@1 1025 fseek(f, len, SEEK_CUR);
rlm@1 1026 int codes = 0;
rlm@1 1027 fread(&codes, 1, 4, f);
rlm@1 1028 while (codes > 0)
rlm@1 1029 {
rlm@1 1030 fread(&len, 1, 4, f);
rlm@1 1031 fseek(f, len, SEEK_CUR);
rlm@1 1032 fseek(f, 8, SEEK_CUR);
rlm@1 1033 fread(&len, 1, 4, f);
rlm@1 1034 fseek(f, len*12, SEEK_CUR);
rlm@1 1035 codes--;
rlm@1 1036 }
rlm@1 1037 games--;
rlm@1 1038 g++;
rlm@1 1039 }
rlm@1 1040 if (found)
rlm@1 1041 {
rlm@1 1042 char desc[256];
rlm@1 1043 char code[17];
rlm@1 1044 fread(&len, 1, 4, f);
rlm@1 1045 fseek(f, len, SEEK_CUR);
rlm@1 1046 int codes = 0;
rlm@1 1047 fread(&codes, 1, 4, f);
rlm@1 1048 while (codes > 0)
rlm@1 1049 {
rlm@1 1050 fread(&len, 1, 4, f);
rlm@1 1051 fread(desc, 1, len, f);
rlm@1 1052 desc[len] = 0;
rlm@1 1053 desc[31] = 0;
rlm@1 1054 fread(&len, 1, 4, f);
rlm@1 1055 fseek(f, len, SEEK_CUR);
rlm@1 1056 fseek(f, 4, SEEK_CUR);
rlm@1 1057 fread(&len, 1, 4, f);
rlm@1 1058 while (len)
rlm@1 1059 {
rlm@1 1060 fseek(f, 4, SEEK_CUR);
rlm@1 1061 fread(code, 1, 8, f);
rlm@1 1062 fseek(f, 4, SEEK_CUR);
rlm@1 1063 fread(&code[8], 1, 8, f);
rlm@1 1064 code[16] = 0;
rlm@1 1065 cheatsAddGSACode(code, desc, v3);
rlm@1 1066 len -= 2;
rlm@1 1067 }
rlm@1 1068 codes--;
rlm@1 1069 }
rlm@1 1070 }
rlm@1 1071 fclose(f);
rlm@1 1072 return false;
rlm@1 1073 }
rlm@1 1074
rlm@1 1075 void cheatsCBAReverseArray(u8 *array, u8 *dest)
rlm@1 1076 {
rlm@1 1077 dest[0] = array[3];
rlm@1 1078 dest[1] = array[2];
rlm@1 1079 dest[2] = array[1];
rlm@1 1080 dest[3] = array[0];
rlm@1 1081 dest[4] = array[5];
rlm@1 1082 dest[5] = array[4];
rlm@1 1083 }
rlm@1 1084
rlm@1 1085 void chatsCBAScramble(u8 *array, int count, u8 b)
rlm@1 1086 {
rlm@1 1087 u8 *x = array + (count >> 3);
rlm@1 1088 u8 *y = array + (b >> 3);
rlm@1 1089 u32 z = *x & (1 << (count & 7));
rlm@1 1090 u32 x0 = (*x & (~(1 << (count & 7))));
rlm@1 1091 if (z != 0)
rlm@1 1092 z = 1;
rlm@1 1093 if ((*y & (1 << (b & 7))) != 0)
rlm@1 1094 x0 |= (1 << (count & 7));
rlm@1 1095 *x = x0;
rlm@1 1096 u32 temp = *y & (~(1 << (b & 7)));
rlm@1 1097 if (z != 0)
rlm@1 1098 temp |= (1 << (b & 7));
rlm@1 1099 *y = temp;
rlm@1 1100 }
rlm@1 1101
rlm@1 1102 u32 cheatsCBAGetValue(u8 *array)
rlm@1 1103 {
rlm@1 1104 return array[0] | array[1]<<8 | array[2] << 16 | array[3]<<24;
rlm@1 1105 }
rlm@1 1106
rlm@1 1107 u16 cheatsCBAGetData(u8 *array)
rlm@1 1108 {
rlm@1 1109 return array[4] | array[5]<<8;
rlm@1 1110 }
rlm@1 1111
rlm@1 1112 void cheatsCBAArrayToValue(u8 *array, u8 *dest)
rlm@1 1113 {
rlm@1 1114 dest[0] = array[3];
rlm@1 1115 dest[1] = array[2];
rlm@1 1116 dest[2] = array[1];
rlm@1 1117 dest[3] = array[0];
rlm@1 1118 dest[4] = array[5];
rlm@1 1119 dest[5] = array[4];
rlm@1 1120 }
rlm@1 1121
rlm@1 1122 void cheatsCBAParseSeedCode(u32 address, u32 value, u32 *array)
rlm@1 1123 {
rlm@1 1124 array[0] = 1;
rlm@1 1125 array[1] = value & 0xFF;
rlm@1 1126 array[2] = (address >> 0x10) & 0xFF;
rlm@1 1127 array[3] = (value >> 8) & 0xFF;
rlm@1 1128 array[4] = (address >> 0x18) & 0x0F;
rlm@1 1129 array[5] = address & 0xFFFF;
rlm@1 1130 array[6] = address;
rlm@1 1131 array[7] = value;
rlm@1 1132 }
rlm@1 1133
rlm@1 1134 u32 cheatsCBAEncWorker()
rlm@1 1135 {
rlm@1 1136 u32 x = (cheatsCBATemporaryValue * 0x41c64e6d) + 0x3039;
rlm@1 1137 u32 y = (x * 0x41c64e6d) + 0x3039;
rlm@1 1138 u32 z = x >> 0x10;
rlm@1 1139 x = ((y >> 0x10) & 0x7fff) << 0x0f;
rlm@1 1140 z = (z << 0x1e) | x;
rlm@1 1141 x = (y * 0x41c64e6d) + 0x3039;
rlm@1 1142 cheatsCBATemporaryValue = x;
rlm@1 1143 return z | ((x >> 0x10) & 0x7fff);
rlm@1 1144 }
rlm@1 1145
rlm@1 1146 #define ROR(v, s) \
rlm@1 1147 (((v) >> (s)) | (((v) & ((1 << (s))-1)) << (32 - (s))))
rlm@1 1148
rlm@1 1149 u32 cheatsCBACalcIndex(u32 x, u32 y)
rlm@1 1150 {
rlm@1 1151 if (y != 0)
rlm@1 1152 {
rlm@1 1153 if (y == 1)
rlm@1 1154 x = 0;
rlm@1 1155 else if (x == y)
rlm@1 1156 x = 0;
rlm@1 1157 if (y < 1)
rlm@1 1158 return x;
rlm@1 1159 else if (x < y)
rlm@1 1160 return x;
rlm@1 1161 u32 x0 = 1;
rlm@1 1162
rlm@1 1163 while (y < 0x10000000)
rlm@1 1164 {
rlm@1 1165 if (y < x)
rlm@1 1166 {
rlm@1 1167 y = y << 4;
rlm@1 1168 x0 = x0 << 4;
rlm@1 1169 }
rlm@1 1170 else
rlm@1 1171 break;
rlm@1 1172 }
rlm@1 1173
rlm@1 1174 while (y < 0x80000000)
rlm@1 1175 {
rlm@1 1176 if (y < x)
rlm@1 1177 {
rlm@1 1178 y = y << 1;
rlm@1 1179 x0 = x0 << 1;
rlm@1 1180 }
rlm@1 1181 else
rlm@1 1182 break;
rlm@1 1183 }
rlm@1 1184
rlm@1 1185 loop:
rlm@1 1186 u32 z = 0;
rlm@1 1187 if (x >= y)
rlm@1 1188 x -= y;
rlm@1 1189 if (x >= (y >> 1))
rlm@1 1190 {
rlm@1 1191 x -= (y >> 1);
rlm@1 1192 z |= ROR(x0, 1);
rlm@1 1193 }
rlm@1 1194 if (x >= (y >> 2))
rlm@1 1195 {
rlm@1 1196 x -= (y >> 2);
rlm@1 1197 z |= ROR(x0, 2);
rlm@1 1198 }
rlm@1 1199 if (x >= (y >> 3))
rlm@1 1200 {
rlm@1 1201 x -= (y >> 3);
rlm@1 1202 z |= ROR(x0, 3);
rlm@1 1203 }
rlm@1 1204
rlm@1 1205 u32 temp = x0;
rlm@1 1206
rlm@1 1207 if (x != 0)
rlm@1 1208 {
rlm@1 1209 x0 = x0 >> 4;
rlm@1 1210 if (x0 != 0)
rlm@1 1211 {
rlm@1 1212 y = y >> 4;
rlm@1 1213 goto loop;
rlm@1 1214 }
rlm@1 1215 }
rlm@1 1216
rlm@1 1217 z = z & 0xe0000000;
rlm@1 1218
rlm@1 1219 if (z != 0)
rlm@1 1220 {
rlm@1 1221 if ((temp & 7) == 0)
rlm@1 1222 return x;
rlm@1 1223 }
rlm@1 1224 else
rlm@1 1225 return x;
rlm@1 1226
rlm@1 1227 if ((z & ROR(temp, 3)) != 0)
rlm@1 1228 x += y >> 3;
rlm@1 1229 if ((z & ROR(temp, 2)) != 0)
rlm@1 1230 x += y >> 2;
rlm@1 1231 if ((z & ROR(temp, 1)) != 0)
rlm@1 1232 x += y >> 1;
rlm@1 1233 return x;
rlm@1 1234 }
rlm@1 1235 else
rlm@1 1236 {}
rlm@1 1237 // should not happen in the current code
rlm@1 1238 return 0;
rlm@1 1239 }
rlm@1 1240
rlm@1 1241 void cheatsCBAUpdateSeedBuffer(u32 a, u8 *buffer, int count)
rlm@1 1242 {
rlm@1 1243 int i;
rlm@1 1244 for (i = 0; i < count; i++)
rlm@1 1245 buffer[i] = i;
rlm@1 1246 for (i = 0; (u32)i < a; i++)
rlm@1 1247 {
rlm@1 1248 u32 a = cheatsCBACalcIndex(cheatsCBAEncWorker(), count);
rlm@1 1249 u32 b = cheatsCBACalcIndex(cheatsCBAEncWorker(), count);
rlm@1 1250 u32 t = buffer[a];
rlm@1 1251 buffer[a] = buffer[b];
rlm@1 1252 buffer[b] = t;
rlm@1 1253 }
rlm@1 1254 }
rlm@1 1255
rlm@1 1256 void cheatsCBAChangeEncryption(u32 *seed)
rlm@1 1257 {
rlm@1 1258 int i;
rlm@1 1259
rlm@1 1260 cheatsCBATemporaryValue = (seed[1] ^ 0x1111);
rlm@1 1261 cheatsCBAUpdateSeedBuffer(0x50, cheatsCBASeedBuffer, 0x30);
rlm@1 1262 cheatsCBATemporaryValue = 0x4efad1c3;
rlm@1 1263
rlm@1 1264 for (i = 0; (u32)i < seed[4]; i++)
rlm@1 1265 {
rlm@1 1266 cheatsCBATemporaryValue = cheatsCBAEncWorker();
rlm@1 1267 }
rlm@1 1268 cheatsCBASeed[2] = cheatsCBAEncWorker();
rlm@1 1269 cheatsCBASeed[3] = cheatsCBAEncWorker();
rlm@1 1270
rlm@1 1271 cheatsCBATemporaryValue = seed[3] ^ 0xf254;
rlm@1 1272
rlm@1 1273 for (i = 0; (u32)i < seed[3]; i++)
rlm@1 1274 {
rlm@1 1275 cheatsCBATemporaryValue = cheatsCBAEncWorker();
rlm@1 1276 }
rlm@1 1277
rlm@1 1278 cheatsCBASeed[0] = cheatsCBAEncWorker();
rlm@1 1279 cheatsCBASeed[1] = cheatsCBAEncWorker();
rlm@1 1280
rlm@1 1281 *((u32 *)&cheatsCBACurrentSeed[0]) = seed[6];
rlm@1 1282 *((u32 *)&cheatsCBACurrentSeed[4]) = seed[7];
rlm@1 1283 *((u32 *)&cheatsCBACurrentSeed[8]) = 0;
rlm@1 1284 }
rlm@1 1285
rlm@1 1286 u16 cheatsCBAGenValue(u32 x, u32 y, u32 z)
rlm@1 1287 {
rlm@1 1288 y <<= 0x10;
rlm@1 1289 z <<= 0x10;
rlm@1 1290 x <<= 0x18;
rlm@1 1291 u32 x0 = (int)y >> 0x10;
rlm@1 1292 z = (int)z >> 0x10;
rlm@1 1293 x = (int)x >> 0x10;
rlm@1 1294 for (int i = 0; i < 8; i++)
rlm@1 1295 {
rlm@1 1296 u32 temp = z ^ x;
rlm@1 1297 if ((int)temp >= 0)
rlm@1 1298 {
rlm@1 1299 temp = z << 0x11;
rlm@1 1300 }
rlm@1 1301 else
rlm@1 1302 {
rlm@1 1303 temp = z << 0x01;
rlm@1 1304 temp ^= x0;
rlm@1 1305 temp = temp << 0x10;
rlm@1 1306 }
rlm@1 1307 z = (int)temp >> 0x10;
rlm@1 1308 temp = x << 0x11;
rlm@1 1309 x = (int)temp >> 0x10;
rlm@1 1310 }
rlm@1 1311 return z & 0xffff;
rlm@1 1312 }
rlm@1 1313
rlm@1 1314 void cheatsCBAGenTable()
rlm@1 1315 {
rlm@1 1316 for (int i = 0; i < 0x100; i++)
rlm@1 1317 {
rlm@1 1318 cheatsCBATable[i] = cheatsCBAGenValue(i, 0x1021, 0);
rlm@1 1319 }
rlm@1 1320 cheatsCBATableGenerated = true;
rlm@1 1321 }
rlm@1 1322
rlm@1 1323 u16 cheatsCBACalcCRC(u8 *rom, int count)
rlm@1 1324 {
rlm@1 1325 u32 crc = 0xffffffff;
rlm@1 1326
rlm@1 1327 if (count & 3)
rlm@1 1328 {
rlm@1 1329 // 0x08000EAE
rlm@1 1330 }
rlm@1 1331 else
rlm@1 1332 {
rlm@1 1333 count = (count >> 2) - 1;
rlm@1 1334 if (count != -1)
rlm@1 1335 {
rlm@1 1336 while (count != -1)
rlm@1 1337 {
rlm@1 1338 crc = (((crc << 0x08) ^ cheatsCBATable[(((u32)crc << 0x10) >> 0x18)
rlm@1 1339 ^ *rom++]) << 0x10) >> 0x10;
rlm@1 1340 crc = (((crc << 0x08) ^ cheatsCBATable[(((u32)crc << 0x10) >> 0x18)
rlm@1 1341 ^ *rom++]) << 0x10) >> 0x10;
rlm@1 1342 crc = (((crc << 0x08) ^ cheatsCBATable[(((u32)crc << 0x10) >> 0x18)
rlm@1 1343 ^ *rom++]) << 0x10) >> 0x10;
rlm@1 1344 crc = (((crc << 0x08) ^ cheatsCBATable[(((u32)crc << 0x10) >> 0x18)
rlm@1 1345 ^ *rom++]) << 0x10) >> 0x10;
rlm@1 1346 count--;
rlm@1 1347 }
rlm@1 1348 }
rlm@1 1349 }
rlm@1 1350 return crc & 0xffff;
rlm@1 1351 }
rlm@1 1352
rlm@1 1353 void cheatsCBADecrypt(u8 *decrypt)
rlm@1 1354 {
rlm@1 1355 u8 buffer[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
rlm@1 1356 u8 *array = &buffer[1];
rlm@1 1357
rlm@1 1358 cheatsCBAReverseArray(decrypt, array);
rlm@1 1359
rlm@1 1360 for (int count = 0x2f; count >= 0; count--)
rlm@1 1361 {
rlm@1 1362 chatsCBAScramble(array, count, cheatsCBASeedBuffer[count]);
rlm@1 1363 }
rlm@1 1364 cheatsCBAArrayToValue(array, decrypt);
rlm@1 1365 *((u32 *)decrypt) = cheatsCBAGetValue(decrypt) ^
rlm@1 1366 cheatsCBASeed[0];
rlm@1 1367 *((u16 *)(decrypt+4)) = (cheatsCBAGetData(decrypt) ^
rlm@1 1368 cheatsCBASeed[1]) & 0xffff;
rlm@1 1369
rlm@1 1370 cheatsCBAReverseArray(decrypt, array);
rlm@1 1371
rlm@1 1372 u32 cs = cheatsCBAGetValue(cheatsCBACurrentSeed);
rlm@1 1373 for (int i = 0; i <= 4; i++)
rlm@1 1374 {
rlm@1 1375 array[i] = ((cs >> 8) ^ array[i+1]) ^ array[i] ;
rlm@1 1376 }
rlm@1 1377
rlm@1 1378 array[5] = (cs >> 8) ^ array[5];
rlm@1 1379
rlm@1 1380 for (int j = 5; j >= 0; j--)
rlm@1 1381 {
rlm@1 1382 array[j] = (cs ^ array[j-1]) ^ array[j];
rlm@1 1383 }
rlm@1 1384
rlm@1 1385 cheatsCBAArrayToValue(array, decrypt);
rlm@1 1386
rlm@1 1387 *((u32 *)decrypt) = cheatsCBAGetValue(decrypt)
rlm@1 1388 ^ cheatsCBASeed[2];
rlm@1 1389 *((u16 *)(decrypt+4)) = (cheatsCBAGetData(decrypt)
rlm@1 1390 ^ cheatsCBASeed[3]) & 0xffff;
rlm@1 1391 }
rlm@1 1392
rlm@1 1393 int cheatsCBAGetCount()
rlm@1 1394 {
rlm@1 1395 int count = 0;
rlm@1 1396 for (int i = 0; i < cheatsNumber; i++)
rlm@1 1397 {
rlm@1 1398 if (cheatsList[i].code == 512)
rlm@1 1399 count++;
rlm@1 1400 }
rlm@1 1401 return count;
rlm@1 1402 }
rlm@1 1403
rlm@1 1404 bool cheatsCBAShouldDecrypt()
rlm@1 1405 {
rlm@1 1406 for (int i = 0; i < cheatsNumber; i++)
rlm@1 1407 {
rlm@1 1408 if (cheatsList[i].code == 512)
rlm@1 1409 {
rlm@1 1410 return (cheatsList[i].codestring[0] == '9');
rlm@1 1411 }
rlm@1 1412 }
rlm@1 1413 return false;
rlm@1 1414 }
rlm@1 1415
rlm@1 1416 void cheatsAddCBACode(const char *code, const char *desc)
rlm@1 1417 {
rlm@1 1418 if (strlen(code) != 13)
rlm@1 1419 {
rlm@1 1420 // wrong cheat
rlm@1 1421 systemMessage(MSG_INVALID_CBA_CODE,
rlm@1 1422 N_("Invalid CBA code. Format is XXXXXXXX YYYY."));
rlm@1 1423 return;
rlm@1 1424 }
rlm@1 1425
rlm@1 1426 int i;
rlm@1 1427 for (i = 0; i < 8; i++)
rlm@1 1428 {
rlm@1 1429 if (!CHEAT_IS_HEX(code[i]))
rlm@1 1430 {
rlm@1 1431 // wrong cheat
rlm@1 1432 systemMessage(MSG_INVALID_CBA_CODE,
rlm@1 1433 N_("Invalid CBA code. Format is XXXXXXXX YYYY."));
rlm@1 1434 return;
rlm@1 1435 }
rlm@1 1436 }
rlm@1 1437
rlm@1 1438 if (code[8] != ' ')
rlm@1 1439 {
rlm@1 1440 systemMessage(MSG_INVALID_CBA_CODE,
rlm@1 1441 N_("Invalid CBA code. Format is XXXXXXXX YYYY."));
rlm@1 1442 return;
rlm@1 1443 }
rlm@1 1444
rlm@1 1445 for (i = 9; i < 13; i++)
rlm@1 1446 {
rlm@1 1447 if (!CHEAT_IS_HEX(code[i]))
rlm@1 1448 {
rlm@1 1449 // wrong cheat
rlm@1 1450 systemMessage(MSG_INVALID_CBA_CODE,
rlm@1 1451 N_("Invalid CBA code. Format is XXXXXXXX YYYY."));
rlm@1 1452 return;
rlm@1 1453 }
rlm@1 1454 }
rlm@1 1455
rlm@1 1456 char buffer[10];
rlm@1 1457 strncpy(buffer, code, 8);
rlm@1 1458 buffer[8] = 0;
rlm@1 1459 u32 address;
rlm@1 1460 sscanf(buffer, "%x", &address);
rlm@1 1461 strncpy(buffer, &code[9], 4);
rlm@1 1462 buffer[4] = 0;
rlm@1 1463 u32 value;
rlm@1 1464 sscanf(buffer, "%x", &value);
rlm@1 1465
rlm@1 1466 u8 array[8] = {
rlm@1 1467 address &255,
rlm@1 1468 (address >> 8) & 255,
rlm@1 1469 (address >> 16) & 255,
rlm@1 1470 (address >> 24) & 255,
rlm@1 1471 (value & 255),
rlm@1 1472 (value >> 8) & 255,
rlm@1 1473 0,
rlm@1 1474 0
rlm@1 1475 };
rlm@1 1476
rlm@1 1477 if (cheatsCBAGetCount() == 0 &&
rlm@1 1478 (address >> 28) == 9)
rlm@1 1479 {
rlm@1 1480 u32 seed[8];
rlm@1 1481 cheatsCBAParseSeedCode(address, value, seed);
rlm@1 1482 cheatsCBAChangeEncryption(seed);
rlm@1 1483 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512, UNKNOWN_CODE);
rlm@1 1484 }
rlm@1 1485 else
rlm@1 1486 {
rlm@1 1487 if (cheatsCBAShouldDecrypt())
rlm@1 1488 cheatsCBADecrypt(array);
rlm@1 1489
rlm@1 1490 address = READ32LE(((u32 *)array));
rlm@1 1491 value = READ16LE(((u16 *)&array[4]));
rlm@1 1492
rlm@1 1493 int type = (address >> 28) & 15;
rlm@1 1494
rlm@1 1495 if (isMultilineWithData(cheatsNumber-1))
rlm@1 1496 {
rlm@1 1497 cheatsAdd(code, desc, address, value, 512, UNKNOWN_CODE);
rlm@1 1498 return;
rlm@1 1499 }
rlm@1 1500
rlm@1 1501 switch (type)
rlm@1 1502 {
rlm@1 1503 case 0x00:
rlm@1 1504 {
rlm@1 1505 if (!cheatsCBATableGenerated)
rlm@1 1506 cheatsCBAGenTable();
rlm@1 1507 u32 crc = cheatsCBACalcCRC(rom, 0x10000);
rlm@1 1508 if (crc != address)
rlm@1 1509 {
rlm@1 1510 systemMessage(MSG_CBA_CODE_WARNING,
rlm@1 1511 N_("Warning: Codes seem to be for a different game.\nCodes may not work correctly."));
rlm@1 1512 }
rlm@1 1513 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1514 UNKNOWN_CODE);
rlm@1 1515 break;
rlm@1 1516 }
rlm@1 1517 case 0x02:
rlm@1 1518 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1519 CBA_OR);
rlm@1 1520 break;
rlm@1 1521 case 0x03:
rlm@1 1522 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1523 INT_8_BIT_WRITE);
rlm@1 1524 break;
rlm@1 1525 case 0x04:
rlm@1 1526 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1527 CBA_SLIDE_CODE);
rlm@1 1528 break;
rlm@1 1529 case 0x05:
rlm@1 1530 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1531 CBA_SUPER);
rlm@1 1532 break;
rlm@1 1533 case 0x06:
rlm@1 1534 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1535 CBA_AND);
rlm@1 1536 break;
rlm@1 1537 case 0x07:
rlm@1 1538 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1539 CBA_IF_TRUE);
rlm@1 1540 break;
rlm@1 1541 case 0x08:
rlm@1 1542 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1543 INT_16_BIT_WRITE);
rlm@1 1544 break;
rlm@1 1545 case 0x0a:
rlm@1 1546 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1547 CBA_IF_FALSE);
rlm@1 1548 break;
rlm@1 1549 case 0x0b:
rlm@1 1550 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1551 CBA_LT);
rlm@1 1552 break;
rlm@1 1553 case 0x0c:
rlm@1 1554 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1555 CBA_GT);
rlm@1 1556 break;
rlm@1 1557 case 0x0d:
rlm@1 1558 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1559 CBA_IF_KEYS_PRESSED);
rlm@1 1560 break;
rlm@1 1561 case 0x0e:
rlm@1 1562 cheatsAdd(code, desc, address & 0x0FFFFFFF, value, 512,
rlm@1 1563 CBA_ADD);
rlm@1 1564 break;
rlm@1 1565 default:
rlm@1 1566 // unsupported code
rlm@1 1567 cheatsAdd(code, desc, address & 0xFFFFFFFF, value, 512,
rlm@1 1568 UNKNOWN_CODE);
rlm@1 1569 break;
rlm@1 1570 }
rlm@1 1571 }
rlm@1 1572 }
rlm@1 1573
rlm@1 1574 void cheatsSaveGame(gzFile file)
rlm@1 1575 {
rlm@1 1576 utilWriteInt(file, cheatsNumber);
rlm@1 1577
rlm@1 1578 utilGzWrite(file, cheatsList, sizeof(cheatsList));
rlm@1 1579 }
rlm@1 1580
rlm@1 1581 void cheatsReadGame(gzFile file)
rlm@1 1582 {
rlm@1 1583 cheatsNumber = 0;
rlm@1 1584
rlm@1 1585 cheatsNumber = utilReadInt(file);
rlm@1 1586
rlm@1 1587 utilGzRead(file, cheatsList, sizeof(cheatsList));
rlm@1 1588
rlm@1 1589 bool firstCodeBreaker = true;
rlm@1 1590
rlm@1 1591 for (int i = 0; i < cheatsNumber; i++)
rlm@1 1592 {
rlm@1 1593 cheatsList[i].status = 0;
rlm@1 1594 if (!cheatsList[i].codestring[0])
rlm@1 1595 {
rlm@1 1596 switch (cheatsList[i].size)
rlm@1 1597 {
rlm@1 1598 case 0:
rlm@1 1599 sprintf(cheatsList[i].codestring, "%08x:%02x", cheatsList[i].address,
rlm@1 1600 cheatsList[i].value);
rlm@1 1601 break;
rlm@1 1602 case 1:
rlm@1 1603 sprintf(cheatsList[i].codestring, "%08x:%04x", cheatsList[i].address,
rlm@1 1604 cheatsList[i].value);
rlm@1 1605 break;
rlm@1 1606 case 2:
rlm@1 1607 sprintf(cheatsList[i].codestring, "%08x:%08x", cheatsList[i].address,
rlm@1 1608 cheatsList[i].value);
rlm@1 1609 break;
rlm@1 1610 }
rlm@1 1611 }
rlm@1 1612
rlm@1 1613 if (cheatsList[i].enabled)
rlm@1 1614 {
rlm@1 1615 cheatsEnable(i);
rlm@1 1616 }
rlm@1 1617
rlm@1 1618 if (cheatsList[i].code == 512 && firstCodeBreaker)
rlm@1 1619 {
rlm@1 1620 firstCodeBreaker = false;
rlm@1 1621 char buffer[10];
rlm@1 1622 strncpy(buffer, cheatsList[i].codestring, 8);
rlm@1 1623 buffer[8] = 0;
rlm@1 1624 u32 address;
rlm@1 1625 sscanf(buffer, "%x", &address);
rlm@1 1626 if ((address >> 28) == 9)
rlm@1 1627 {
rlm@1 1628 strncpy(buffer, &cheatsList[i].codestring[9], 4);
rlm@1 1629 buffer[4] = 0;
rlm@1 1630 u32 value;
rlm@1 1631 sscanf(buffer, "%x", &value);
rlm@1 1632
rlm@1 1633 u32 seed[8];
rlm@1 1634 cheatsCBAParseSeedCode(address, value, seed);
rlm@1 1635 cheatsCBAChangeEncryption(seed);
rlm@1 1636 }
rlm@1 1637 }
rlm@1 1638 }
rlm@1 1639 }
rlm@1 1640
rlm@1 1641 void cheatsSaveCheatList(const char *file)
rlm@1 1642 {
rlm@1 1643 if (cheatsNumber == 0)
rlm@1 1644 return;
rlm@1 1645 FILE *f = fopen(file, "wb");
rlm@1 1646 if (f == NULL)
rlm@1 1647 return;
rlm@1 1648 int version = 1;
rlm@1 1649 fwrite(&version, 1, sizeof(version), f);
rlm@1 1650 int type = 0;
rlm@1 1651 fwrite(&type, 1, sizeof(type), f);
rlm@1 1652 fwrite(&cheatsNumber, 1, sizeof(cheatsNumber), f);
rlm@1 1653 fwrite(cheatsList, 1, sizeof(cheatsList), f);
rlm@1 1654 fclose(f);
rlm@1 1655 }
rlm@1 1656
rlm@1 1657 bool cheatsLoadCheatList(const char *file)
rlm@1 1658 {
rlm@1 1659 cheatsNumber = 0;
rlm@1 1660
rlm@1 1661 int count = 0;
rlm@1 1662
rlm@1 1663 FILE *f = fopen(file, "rb");
rlm@1 1664
rlm@1 1665 if (f == NULL)
rlm@1 1666 return false;
rlm@1 1667
rlm@1 1668 int version = 0;
rlm@1 1669
rlm@1 1670 if (fread(&version, 1, sizeof(version), f) != sizeof(version))
rlm@1 1671 {
rlm@1 1672 fclose(f);
rlm@1 1673 return false;
rlm@1 1674 }
rlm@1 1675
rlm@1 1676 if (version != 1)
rlm@1 1677 {
rlm@1 1678 systemMessage(MSG_UNSUPPORTED_CHEAT_LIST_VERSION,
rlm@1 1679 N_("Unsupported cheat list version %d"), version);
rlm@1 1680 fclose(f);
rlm@1 1681 return false;
rlm@1 1682 }
rlm@1 1683
rlm@1 1684 int type = 0;
rlm@1 1685 if (fread(&type, 1, sizeof(type), f) != sizeof(type))
rlm@1 1686 {
rlm@1 1687 fclose(f);
rlm@1 1688 return false;
rlm@1 1689 }
rlm@1 1690
rlm@1 1691 if (type != 0)
rlm@1 1692 {
rlm@1 1693 systemMessage(MSG_UNSUPPORTED_CHEAT_LIST_TYPE,
rlm@1 1694 N_("Unsupported cheat list type %d"), type);
rlm@1 1695 fclose(f);
rlm@1 1696 return false;
rlm@1 1697 }
rlm@1 1698
rlm@1 1699 if (fread(&count, 1, sizeof(count), f) != sizeof(count))
rlm@1 1700 {
rlm@1 1701 fclose(f);
rlm@1 1702 return false;
rlm@1 1703 }
rlm@1 1704
rlm@1 1705 if (fread(cheatsList, 1, sizeof(cheatsList), f) != sizeof(cheatsList))
rlm@1 1706 {
rlm@1 1707 fclose(f);
rlm@1 1708 return false;
rlm@1 1709 }
rlm@1 1710
rlm@1 1711 bool firstCodeBreaker = true;
rlm@1 1712
rlm@1 1713 for (int i = 0; i < count; i++)
rlm@1 1714 {
rlm@1 1715 cheatsList[i].status = 0; // remove old status as it is not used
rlm@1 1716 if (!cheatsList[i].codestring[0])
rlm@1 1717 {
rlm@1 1718 switch (cheatsList[i].size)
rlm@1 1719 {
rlm@1 1720 case 0:
rlm@1 1721 sprintf(cheatsList[i].codestring, "%08x:%02x", cheatsList[i].address,
rlm@1 1722 cheatsList[i].value);
rlm@1 1723 break;
rlm@1 1724 case 1:
rlm@1 1725 sprintf(cheatsList[i].codestring, "%08x:%04x", cheatsList[i].address,
rlm@1 1726 cheatsList[i].value);
rlm@1 1727 break;
rlm@1 1728 case 2:
rlm@1 1729 sprintf(cheatsList[i].codestring, "%08x:%08x", cheatsList[i].address,
rlm@1 1730 cheatsList[i].value);
rlm@1 1731 break;
rlm@1 1732 }
rlm@1 1733 }
rlm@1 1734
rlm@1 1735 if (cheatsList[i].code == 512 && firstCodeBreaker)
rlm@1 1736 {
rlm@1 1737 firstCodeBreaker = false;
rlm@1 1738 char buffer[10];
rlm@1 1739 strncpy(buffer, cheatsList[i].codestring, 8);
rlm@1 1740 buffer[8] = 0;
rlm@1 1741 u32 address;
rlm@1 1742 sscanf(buffer, "%x", &address);
rlm@1 1743 if ((address >> 28) == 9)
rlm@1 1744 {
rlm@1 1745 strncpy(buffer, &cheatsList[i].codestring[9], 4);
rlm@1 1746 buffer[4] = 0;
rlm@1 1747 u32 value;
rlm@1 1748 sscanf(buffer, "%x", &value);
rlm@1 1749
rlm@1 1750 u32 seed[8];
rlm@1 1751 cheatsCBAParseSeedCode(address, value, seed);
rlm@1 1752 cheatsCBAChangeEncryption(seed);
rlm@1 1753 }
rlm@1 1754 }
rlm@1 1755 }
rlm@1 1756 cheatsNumber = count;
rlm@1 1757 fclose(f);
rlm@1 1758 return true;
rlm@1 1759 }
rlm@1 1760
rlm@1 1761 extern int *extCpuLoopTicks;
rlm@1 1762 extern int *extClockTicks;
rlm@1 1763 extern int *extTicks;
rlm@1 1764 extern int cpuSavedTicks;
rlm@1 1765
rlm@1 1766 extern void debuggerBreakOnWrite(u32 *, u32, u32, int);
rlm@1 1767
rlm@1 1768 #define CPU_BREAK_LOOP2 \
rlm@1 1769 cpuSavedTicks = cpuSavedTicks - *extCpuLoopTicks; \
rlm@1 1770 *extCpuLoopTicks = *extClockTicks; \
rlm@1 1771 *extTicks = *extClockTicks;
rlm@1 1772
rlm@1 1773 void cheatsWriteMemory(u32 *address, u32 value, u32 mask)
rlm@1 1774 {
rlm@1 1775 #ifdef BKPT_SUPPORT
rlm@1 1776 #ifdef SDL
rlm@1 1777 if (cheatsNumber == 0)
rlm@1 1778 {
rlm@1 1779 debuggerBreakOnWrite(address, *address, value, 2);
rlm@1 1780 CPU_BREAK_LOOP2;
rlm@1 1781 *address = value;
rlm@1 1782 return;
rlm@1 1783 }
rlm@1 1784 #endif
rlm@1 1785 #endif
rlm@1 1786 }
rlm@1 1787
rlm@1 1788 void cheatsWriteHalfWord(u16 *address, u16 value, u16 mask)
rlm@1 1789 {
rlm@1 1790 #ifdef BKPT_SUPPORT
rlm@1 1791 #ifdef SDL
rlm@1 1792 if (cheatsNumber == 0)
rlm@1 1793 {
rlm@1 1794 debuggerBreakOnWrite((u32 *)address, *address, value, 1);
rlm@1 1795 CPU_BREAK_LOOP2;
rlm@1 1796 *address = value;
rlm@1 1797 return;
rlm@1 1798 }
rlm@1 1799 #endif
rlm@1 1800 #endif
rlm@1 1801 }
rlm@1 1802
rlm@1 1803 #if defined BKPT_SUPPORT && defined SDL
rlm@1 1804 void cheatsWriteByte(u8 *address, u8 value)
rlm@1 1805 #else
rlm@1 1806 void cheatsWriteByte(u8 *, u8)
rlm@1 1807 #endif
rlm@1 1808 {
rlm@1 1809 #ifdef BKPT_SUPPORT
rlm@1 1810 #ifdef SDL
rlm@1 1811 if (cheatsNumber == 0)
rlm@1 1812 {
rlm@1 1813 debuggerBreakOnWrite((u32 *)address, *address, value, 0);
rlm@1 1814 CPU_BREAK_LOOP2;
rlm@1 1815 *address = value;
rlm@1 1816 return;
rlm@1 1817 }
rlm@1 1818 #endif
rlm@1 1819 #endif
rlm@1 1820 }
rlm@1 1821
rlm@1 1822 #undef CPU_BREAK_LOOP2