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1 | /*************************************************************************** |
2 | * Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team * | |
3 | * * | |
4 | * This program is free software; you can redistribute it and/or modify * | |
5 | * it under the terms of the GNU General Public License as published by * | |
6 | * the Free Software Foundation; either version 2 of the License, or * | |
7 | * (at your option) any later version. * | |
8 | * * | |
9 | * This program is distributed in the hope that it will be useful, * | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
12 | * GNU General Public License for more details. * | |
13 | * * | |
14 | * You should have received a copy of the GNU General Public License * | |
15 | * along with this program; if not, write to the * | |
16 | * Free Software Foundation, Inc., * | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. * | |
18 | ***************************************************************************/ | |
19 | ||
20 | /* | |
21 | * Miscellaneous functions, including savestates and CD-ROM loading. | |
22 | */ | |
23 | ||
24 | #include "misc.h" | |
25 | #include "cdrom.h" | |
26 | #include "mdec.h" | |
27 | #include "ppf.h" | |
28 | ||
29 | char CdromId[10] = ""; | |
30 | char CdromLabel[33] = ""; | |
31 | ||
32 | // PSX Executable types | |
33 | #define PSX_EXE 1 | |
34 | #define CPE_EXE 2 | |
35 | #define COFF_EXE 3 | |
36 | #define INVALID_EXE 4 | |
37 | ||
38 | #define ISODCL(from, to) (to - from + 1) | |
39 | ||
40 | struct iso_directory_record { | |
41 | char length [ISODCL (1, 1)]; /* 711 */ | |
42 | char ext_attr_length [ISODCL (2, 2)]; /* 711 */ | |
43 | char extent [ISODCL (3, 10)]; /* 733 */ | |
44 | char size [ISODCL (11, 18)]; /* 733 */ | |
45 | char date [ISODCL (19, 25)]; /* 7 by 711 */ | |
46 | char flags [ISODCL (26, 26)]; | |
47 | char file_unit_size [ISODCL (27, 27)]; /* 711 */ | |
48 | char interleave [ISODCL (28, 28)]; /* 711 */ | |
49 | char volume_sequence_number [ISODCL (29, 32)]; /* 723 */ | |
50 | unsigned char name_len [ISODCL (33, 33)]; /* 711 */ | |
51 | char name [1]; | |
52 | }; | |
53 | ||
54 | void mmssdd( char *b, char *p ) | |
55 | { | |
56 | int m, s, d; | |
57 | #if defined(__BIGENDIAN__) | |
58 | int block = (b[0] & 0xff) | ((b[1] & 0xff) << 8) | ((b[2] & 0xff) << 16) | (b[3] << 24); | |
59 | #else | |
60 | int block = *((int*)b); | |
61 | #endif | |
62 | ||
63 | block += 150; | |
64 | m = block / 4500; // minutes | |
65 | block = block - m * 4500; // minutes rest | |
66 | s = block / 75; // seconds | |
67 | d = block - s * 75; // seconds rest | |
68 | ||
69 | m = ((m / 10) << 4) | m % 10; | |
70 | s = ((s / 10) << 4) | s % 10; | |
71 | d = ((d / 10) << 4) | d % 10; | |
72 | ||
73 | p[0] = m; | |
74 | p[1] = s; | |
75 | p[2] = d; | |
76 | } | |
77 | ||
78 | #define incTime() \ | |
79 | time[0] = btoi(time[0]); time[1] = btoi(time[1]); time[2] = btoi(time[2]); \ | |
80 | time[2]++; \ | |
81 | if(time[2] == 75) { \ | |
82 | time[2] = 0; \ | |
83 | time[1]++; \ | |
84 | if (time[1] == 60) { \ | |
85 | time[1] = 0; \ | |
86 | time[0]++; \ | |
87 | } \ | |
88 | } \ | |
89 | time[0] = itob(time[0]); time[1] = itob(time[1]); time[2] = itob(time[2]); | |
90 | ||
91 | #define READTRACK() \ | |
92 | if (CDR_readTrack(time) == -1) return -1; \ | |
93 | buf = CDR_getBuffer(); \ | |
94 | if (buf == NULL) return -1; else CheckPPFCache(buf, time[0], time[1], time[2]); | |
95 | ||
96 | #define READDIR(_dir) \ | |
97 | READTRACK(); \ | |
98 | memcpy(_dir, buf + 12, 2048); \ | |
99 | \ | |
100 | incTime(); \ | |
101 | READTRACK(); \ | |
102 | memcpy(_dir + 2048, buf + 12, 2048); | |
103 | ||
104 | int GetCdromFile(u8 *mdir, u8 *time, s8 *filename) { | |
105 | struct iso_directory_record *dir; | |
106 | char ddir[4096]; | |
107 | u8 *buf; | |
108 | int i; | |
109 | ||
110 | // only try to scan if a filename is given | |
111 | if (!strlen(filename)) return -1; | |
112 | ||
113 | i = 0; | |
114 | while (i < 4096) { | |
115 | dir = (struct iso_directory_record*) &mdir[i]; | |
116 | if (dir->length[0] == 0) { | |
117 | return -1; | |
118 | } | |
119 | i += dir->length[0]; | |
120 | ||
121 | if (dir->flags[0] & 0x2) { // it's a dir | |
122 | if (!strnicmp((char *)&dir->name[0], filename, dir->name_len[0])) { | |
123 | if (filename[dir->name_len[0]] != '\\') continue; | |
124 | ||
125 | filename += dir->name_len[0] + 1; | |
126 | ||
127 | mmssdd(dir->extent, (char *)time); | |
128 | READDIR(ddir); | |
129 | i = 0; | |
130 | mdir = ddir; | |
131 | } | |
132 | } else { | |
133 | if (!strnicmp((char *)&dir->name[0], filename, strlen(filename))) { | |
134 | mmssdd(dir->extent, (char *)time); | |
135 | break; | |
136 | } | |
137 | } | |
138 | } | |
139 | return 0; | |
140 | } | |
141 | ||
142 | int LoadCdrom() { | |
143 | EXE_HEADER tmpHead; | |
144 | struct iso_directory_record *dir; | |
145 | u8 time[4], *buf; | |
146 | u8 mdir[4096]; | |
147 | s8 exename[256]; | |
148 | ||
149 | if (!Config.HLE) { | |
150 | psxRegs.pc = psxRegs.GPR.n.ra; | |
151 | return 0; | |
152 | } | |
153 | ||
154 | time[0] = itob(0); time[1] = itob(2); time[2] = itob(0x10); | |
155 | ||
156 | READTRACK(); | |
157 | ||
158 | // skip head and sub, and go to the root directory record | |
159 | dir = (struct iso_directory_record*) &buf[12+156]; | |
160 | ||
161 | mmssdd(dir->extent, (char*)time); | |
162 | ||
163 | READDIR(mdir); | |
164 | ||
165 | // Load SYSTEM.CNF and scan for the main executable | |
166 | if (GetCdromFile(mdir, time, "SYSTEM.CNF;1") == -1) { | |
167 | // if SYSTEM.CNF is missing, start an existing PSX.EXE | |
168 | if (GetCdromFile(mdir, time, "PSX.EXE;1") == -1) return -1; | |
169 | ||
170 | READTRACK(); | |
171 | } | |
172 | else { | |
173 | // read the SYSTEM.CNF | |
174 | READTRACK(); | |
175 | ||
176 | sscanf((char *)buf + 12, "BOOT = cdrom:\\%256s", exename); | |
177 | if (GetCdromFile(mdir, time, exename) == -1) { | |
178 | sscanf((char *)buf + 12, "BOOT = cdrom:%256s", exename); | |
179 | if (GetCdromFile(mdir, time, exename) == -1) { | |
180 | char *ptr = strstr(buf + 12, "cdrom:"); | |
181 | if (ptr != NULL) { | |
182 | ptr += 6; | |
183 | while (*ptr == '\\' || *ptr == '/') ptr++; | |
184 | strncpy(exename, ptr, 255); | |
185 | exename[255] = '\0'; | |
186 | ptr = exename; | |
187 | while (*ptr != '\0' && *ptr != '\r' && *ptr != '\n') ptr++; | |
188 | *ptr = '\0'; | |
189 | if (GetCdromFile(mdir, time, exename) == -1) | |
190 | return -1; | |
191 | } else | |
192 | return -1; | |
193 | } | |
194 | } | |
195 | ||
196 | // Read the EXE-Header | |
197 | READTRACK(); | |
198 | } | |
199 | ||
200 | memcpy(&tmpHead, buf + 12, sizeof(EXE_HEADER)); | |
201 | ||
202 | psxRegs.pc = SWAP32(tmpHead.pc0); | |
203 | psxRegs.GPR.n.gp = SWAP32(tmpHead.gp0); | |
204 | psxRegs.GPR.n.sp = SWAP32(tmpHead.s_addr); | |
205 | if (psxRegs.GPR.n.sp == 0) psxRegs.GPR.n.sp = 0x801fff00; | |
206 | ||
207 | tmpHead.t_size = SWAP32(tmpHead.t_size); | |
208 | tmpHead.t_addr = SWAP32(tmpHead.t_addr); | |
209 | ||
210 | // Read the rest of the main executable | |
211 | while (tmpHead.t_size) { | |
212 | void *ptr = (void *)PSXM(tmpHead.t_addr); | |
213 | ||
214 | incTime(); | |
215 | READTRACK(); | |
216 | ||
217 | if (ptr != NULL) memcpy(ptr, buf+12, 2048); | |
218 | ||
219 | tmpHead.t_size -= 2048; | |
220 | tmpHead.t_addr += 2048; | |
221 | } | |
222 | ||
223 | return 0; | |
224 | } | |
225 | ||
226 | int LoadCdromFile(const char *filename, EXE_HEADER *head) { | |
227 | struct iso_directory_record *dir; | |
228 | u8 time[4],*buf; | |
229 | u8 mdir[4096], exename[256]; | |
230 | u32 size, addr; | |
231 | ||
232 | sscanf(filename, "cdrom:\\%256s", exename); | |
233 | ||
234 | time[0] = itob(0); time[1] = itob(2); time[2] = itob(0x10); | |
235 | ||
236 | READTRACK(); | |
237 | ||
238 | // skip head and sub, and go to the root directory record | |
239 | dir = (struct iso_directory_record *)&buf[12 + 156]; | |
240 | ||
241 | mmssdd(dir->extent, (char*)time); | |
242 | ||
243 | READDIR(mdir); | |
244 | ||
245 | if (GetCdromFile(mdir, time, exename) == -1) return -1; | |
246 | ||
247 | READTRACK(); | |
248 | ||
249 | memcpy(head, buf + 12, sizeof(EXE_HEADER)); | |
250 | size = head->t_size; | |
251 | addr = head->t_addr; | |
252 | ||
253 | while (size) { | |
254 | incTime(); | |
255 | READTRACK(); | |
256 | ||
257 | memcpy((void *)PSXM(addr), buf + 12, 2048); | |
258 | ||
259 | size -= 2048; | |
260 | addr += 2048; | |
261 | } | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | int CheckCdrom() { | |
267 | struct iso_directory_record *dir; | |
268 | unsigned char time[4], *buf; | |
269 | unsigned char mdir[4096]; | |
270 | char exename[256]; | |
271 | int i, c; | |
272 | ||
273 | FreePPFCache(); | |
274 | ||
275 | time[0] = itob(0); | |
276 | time[1] = itob(2); | |
277 | time[2] = itob(0x10); | |
278 | ||
279 | READTRACK(); | |
280 | ||
281 | CdromLabel[0] = '\0'; | |
282 | CdromId[0] = '\0'; | |
283 | ||
284 | strncpy(CdromLabel, buf + 52, 32); | |
285 | ||
286 | // skip head and sub, and go to the root directory record | |
287 | dir = (struct iso_directory_record *)&buf[12 + 156]; | |
288 | ||
289 | mmssdd(dir->extent, (char *)time); | |
290 | ||
291 | READDIR(mdir); | |
292 | ||
293 | if (GetCdromFile(mdir, time, "SYSTEM.CNF;1") != -1) { | |
294 | READTRACK(); | |
295 | ||
296 | sscanf((char *)buf + 12, "BOOT = cdrom:\\%256s", exename); | |
297 | if (GetCdromFile(mdir, time, exename) == -1) { | |
298 | sscanf((char *)buf + 12, "BOOT = cdrom:%256s", exename); | |
299 | if (GetCdromFile(mdir, time, exename) == -1) { | |
300 | char *ptr = strstr(buf + 12, "cdrom:"); // possibly the executable is in some subdir | |
301 | if (ptr != NULL) { | |
302 | ptr += 6; | |
303 | while (*ptr == '\\' || *ptr == '/') ptr++; | |
304 | strncpy(exename, ptr, 255); | |
305 | exename[255] = '\0'; | |
306 | ptr = exename; | |
307 | while (*ptr != '\0' && *ptr != '\r' && *ptr != '\n') ptr++; | |
308 | *ptr = '\0'; | |
309 | if (GetCdromFile(mdir, time, exename) == -1) | |
310 | return -1; // main executable not found | |
311 | } else | |
312 | return -1; | |
313 | } | |
314 | } | |
315 | } else if (GetCdromFile(mdir, time, "PSX.EXE;1") != -1) { | |
316 | strcpy(exename, "PSX.EXE;1"); | |
317 | strcpy(CdromId, "SLUS99999"); | |
318 | } else | |
319 | return -1; // SYSTEM.CNF and PSX.EXE not found | |
320 | ||
321 | if (CdromId[0] == '\0') { | |
322 | i = strlen(exename); | |
323 | if (i >= 2) { | |
324 | if (exename[i - 2] == ';') i-= 2; | |
325 | c = 8; i--; | |
326 | while (i >= 0 && c >= 0) { | |
327 | if (isalnum(exename[i])) CdromId[c--] = exename[i]; | |
328 | i--; | |
329 | } | |
330 | } | |
331 | } | |
332 | ||
333 | if (Config.PsxAuto) { // autodetect system (pal or ntsc) | |
334 | if (strstr(exename, "ES") != NULL) | |
335 | Config.PsxType = PSX_TYPE_PAL; // pal | |
336 | else Config.PsxType = PSX_TYPE_NTSC; // ntsc | |
337 | } | |
338 | ||
339 | if (CdromLabel[0] == ' ') { | |
340 | strncpy(CdromLabel, CdromId, 9); | |
341 | } | |
342 | SysPrintf(_("CD-ROM Label: %.32s\n"), CdromLabel); | |
343 | SysPrintf(_("CD-ROM ID: %.9s\n"), CdromId); | |
344 | ||
345 | BuildPPFCache(); | |
346 | ||
347 | return 0; | |
348 | } | |
349 | ||
350 | static int PSXGetFileType(FILE *f) { | |
351 | unsigned long current; | |
352 | u8 mybuf[2048]; | |
353 | EXE_HEADER *exe_hdr; | |
354 | FILHDR *coff_hdr; | |
355 | ||
356 | current = ftell(f); | |
357 | fseek(f, 0L, SEEK_SET); | |
358 | fread(mybuf, 2048, 1, f); | |
359 | fseek(f, current, SEEK_SET); | |
360 | ||
361 | exe_hdr = (EXE_HEADER *)mybuf; | |
362 | if (memcmp(exe_hdr->id, "PS-X EXE", 8) == 0) | |
363 | return PSX_EXE; | |
364 | ||
365 | if (mybuf[0] == 'C' && mybuf[1] == 'P' && mybuf[2] == 'E') | |
366 | return CPE_EXE; | |
367 | ||
368 | coff_hdr = (FILHDR *)mybuf; | |
369 | if (SWAPu16(coff_hdr->f_magic) == 0x0162) | |
370 | return COFF_EXE; | |
371 | ||
372 | return INVALID_EXE; | |
373 | } | |
374 | ||
375 | int Load(const char *ExePath) { | |
376 | FILE *tmpFile; | |
377 | EXE_HEADER tmpHead; | |
378 | int type; | |
379 | int retval = 0; | |
380 | u8 opcode; | |
381 | u32 section_address, section_size; | |
382 | ||
383 | strncpy(CdromId, "SLUS99999", 9); | |
384 | strncpy(CdromLabel, "SLUS_999.99", 11); | |
385 | ||
386 | tmpFile = fopen(ExePath, "rb"); | |
387 | if (tmpFile == NULL) { | |
388 | SysPrintf(_("Error opening file: %s.\n"), ExePath); | |
389 | retval = -1; | |
390 | } else { | |
391 | type = PSXGetFileType(tmpFile); | |
392 | switch (type) { | |
393 | case PSX_EXE: | |
394 | fread(&tmpHead,sizeof(EXE_HEADER),1,tmpFile); | |
395 | fseek(tmpFile, 0x800, SEEK_SET); | |
396 | fread((void *)PSXM(SWAP32(tmpHead.t_addr)), SWAP32(tmpHead.t_size),1,tmpFile); | |
397 | fclose(tmpFile); | |
398 | psxRegs.pc = SWAP32(tmpHead.pc0); | |
399 | psxRegs.GPR.n.gp = SWAP32(tmpHead.gp0); | |
400 | psxRegs.GPR.n.sp = SWAP32(tmpHead.s_addr); | |
401 | if (psxRegs.GPR.n.sp == 0) | |
402 | psxRegs.GPR.n.sp = 0x801fff00; | |
403 | retval = 0; | |
404 | break; | |
405 | case CPE_EXE: | |
406 | fseek(tmpFile, 6, SEEK_SET); /* Something tells me we should go to 4 and read the "08 00" here... */ | |
407 | do { | |
408 | fread(&opcode, 1, 1, tmpFile); | |
409 | switch (opcode) { | |
410 | case 1: /* Section loading */ | |
411 | fread(§ion_address, 4, 1, tmpFile); | |
412 | fread(§ion_size, 4, 1, tmpFile); | |
413 | section_address = SWAPu32(section_address); | |
414 | section_size = SWAPu32(section_size); | |
415 | #ifdef EMU_LOG | |
416 | EMU_LOG("Loading %08X bytes from %08X to %08X\n", section_size, ftell(tmpFile), section_address); | |
417 | #endif | |
418 | fread(PSXM(section_address), section_size, 1, tmpFile); | |
419 | break; | |
420 | case 3: /* register loading (PC only?) */ | |
421 | fseek(tmpFile, 2, SEEK_CUR); /* unknown field */ | |
422 | fread(&psxRegs.pc, 4, 1, tmpFile); | |
423 | psxRegs.pc = SWAPu32(psxRegs.pc); | |
424 | break; | |
425 | case 0: /* End of file */ | |
426 | break; | |
427 | default: | |
428 | SysPrintf(_("Unknown CPE opcode %02x at position %08x.\n"), opcode, ftell(tmpFile) - 1); | |
429 | retval = -1; | |
430 | break; | |
431 | } | |
432 | } while (opcode != 0 && retval == 0); | |
433 | break; | |
434 | case COFF_EXE: | |
435 | SysPrintf(_("COFF files not supported.\n")); | |
436 | retval = -1; | |
437 | break; | |
438 | case INVALID_EXE: | |
439 | SysPrintf(_("This file does not appear to be a valid PSX file.\n")); | |
440 | retval = -1; | |
441 | break; | |
442 | } | |
443 | } | |
444 | ||
445 | if (retval != 0) { | |
446 | CdromId[0] = '\0'; | |
447 | CdromLabel[0] = '\0'; | |
448 | } | |
449 | ||
450 | return retval; | |
451 | } | |
452 | ||
453 | // STATES | |
454 | ||
455 | static const char PcsxHeader[32] = "STv4 PCSX v" PACKAGE_VERSION; | |
456 | ||
457 | // Savestate Versioning! | |
458 | // If you make changes to the savestate version, please increment the value below. | |
459 | static const u32 SaveVersion = 0x8b410004; | |
460 | ||
461 | int SaveState(const char *file) { | |
462 | gzFile f; | |
463 | GPUFreeze_t *gpufP; | |
464 | SPUFreeze_t *spufP; | |
465 | int Size; | |
466 | unsigned char *pMem; | |
467 | ||
468 | f = gzopen(file, "wb"); | |
469 | if (f == NULL) return -1; | |
470 | ||
471 | gzwrite(f, (void *)PcsxHeader, 32); | |
472 | gzwrite(f, (void *)&SaveVersion, sizeof(u32)); | |
473 | gzwrite(f, (void *)&Config.HLE, sizeof(boolean)); | |
474 | ||
475 | pMem = (unsigned char *)malloc(128 * 96 * 3); | |
476 | if (pMem == NULL) return -1; | |
477 | GPU_getScreenPic(pMem); | |
478 | gzwrite(f, pMem, 128 * 96 * 3); | |
479 | free(pMem); | |
480 | ||
481 | if (Config.HLE) | |
482 | psxBiosFreeze(1); | |
483 | ||
484 | gzwrite(f, psxM, 0x00200000); | |
485 | gzwrite(f, psxR, 0x00080000); | |
486 | gzwrite(f, psxH, 0x00010000); | |
487 | gzwrite(f, (void *)&psxRegs, sizeof(psxRegs)); | |
488 | ||
489 | // gpu | |
490 | gpufP = (GPUFreeze_t *)malloc(sizeof(GPUFreeze_t)); | |
491 | gpufP->ulFreezeVersion = 1; | |
492 | GPU_freeze(1, gpufP); | |
493 | gzwrite(f, gpufP, sizeof(GPUFreeze_t)); | |
494 | free(gpufP); | |
495 | ||
496 | // spu | |
497 | spufP = (SPUFreeze_t *) malloc(16); | |
498 | SPU_freeze(2, spufP); | |
499 | Size = spufP->Size; gzwrite(f, &Size, 4); | |
500 | free(spufP); | |
501 | spufP = (SPUFreeze_t *) malloc(Size); | |
502 | SPU_freeze(1, spufP); | |
503 | gzwrite(f, spufP, Size); | |
504 | free(spufP); | |
505 | ||
506 | sioFreeze(f, 1); | |
507 | cdrFreeze(f, 1); | |
508 | psxHwFreeze(f, 1); | |
509 | psxRcntFreeze(f, 1); | |
510 | mdecFreeze(f, 1); | |
511 | ||
512 | gzclose(f); | |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
517 | int LoadState(const char *file) { | |
518 | gzFile f; | |
519 | GPUFreeze_t *gpufP; | |
520 | SPUFreeze_t *spufP; | |
521 | int Size; | |
522 | char header[32]; | |
523 | u32 version; | |
524 | boolean hle; | |
525 | ||
526 | f = gzopen(file, "rb"); | |
527 | if (f == NULL) return -1; | |
528 | ||
529 | gzread(f, header, sizeof(header)); | |
530 | gzread(f, &version, sizeof(u32)); | |
531 | gzread(f, &hle, sizeof(boolean)); | |
532 | ||
533 | if (strncmp("STv4 PCSX", header, 9) != 0 || version != SaveVersion || hle != Config.HLE) { | |
534 | gzclose(f); | |
535 | return -1; | |
536 | } | |
537 | ||
538 | psxCpu->Reset(); | |
539 | gzseek(f, 128 * 96 * 3, SEEK_CUR); | |
540 | ||
541 | gzread(f, psxM, 0x00200000); | |
542 | gzread(f, psxR, 0x00080000); | |
543 | gzread(f, psxH, 0x00010000); | |
544 | gzread(f, (void *)&psxRegs, sizeof(psxRegs)); | |
545 | ||
546 | if (Config.HLE) | |
547 | psxBiosFreeze(0); | |
548 | ||
549 | // gpu | |
550 | gpufP = (GPUFreeze_t *)malloc(sizeof(GPUFreeze_t)); | |
551 | gzread(f, gpufP, sizeof(GPUFreeze_t)); | |
552 | GPU_freeze(0, gpufP); | |
553 | free(gpufP); | |
554 | ||
555 | // spu | |
556 | gzread(f, &Size, 4); | |
557 | spufP = (SPUFreeze_t *)malloc(Size); | |
558 | gzread(f, spufP, Size); | |
559 | SPU_freeze(0, spufP); | |
560 | free(spufP); | |
561 | ||
562 | sioFreeze(f, 0); | |
563 | cdrFreeze(f, 0); | |
564 | psxHwFreeze(f, 0); | |
565 | psxRcntFreeze(f, 0); | |
566 | mdecFreeze(f, 0); | |
567 | ||
568 | gzclose(f); | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
573 | int CheckState(const char *file) { | |
574 | gzFile f; | |
575 | char header[32]; | |
576 | u32 version; | |
577 | boolean hle; | |
578 | ||
579 | f = gzopen(file, "rb"); | |
580 | if (f == NULL) return -1; | |
581 | ||
582 | gzread(f, header, sizeof(header)); | |
583 | gzread(f, &version, sizeof(u32)); | |
584 | gzread(f, &hle, sizeof(boolean)); | |
585 | ||
586 | gzclose(f); | |
587 | ||
588 | if (strncmp("STv4 PCSX", header, 9) != 0 || version != SaveVersion || hle != Config.HLE) | |
589 | return -1; | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | // NET Function Helpers | |
595 | ||
596 | int SendPcsxInfo() { | |
597 | if (NET_recvData == NULL || NET_sendData == NULL) | |
598 | return 0; | |
599 | ||
600 | NET_sendData(&Config.Xa, sizeof(Config.Xa), PSE_NET_BLOCKING); | |
601 | NET_sendData(&Config.Sio, sizeof(Config.Sio), PSE_NET_BLOCKING); | |
602 | NET_sendData(&Config.SpuIrq, sizeof(Config.SpuIrq), PSE_NET_BLOCKING); | |
603 | NET_sendData(&Config.RCntFix, sizeof(Config.RCntFix), PSE_NET_BLOCKING); | |
604 | NET_sendData(&Config.PsxType, sizeof(Config.PsxType), PSE_NET_BLOCKING); | |
605 | NET_sendData(&Config.Cpu, sizeof(Config.Cpu), PSE_NET_BLOCKING); | |
606 | ||
607 | return 0; | |
608 | } | |
609 | ||
610 | int RecvPcsxInfo() { | |
611 | int tmp; | |
612 | ||
613 | if (NET_recvData == NULL || NET_sendData == NULL) | |
614 | return 0; | |
615 | ||
616 | NET_recvData(&Config.Xa, sizeof(Config.Xa), PSE_NET_BLOCKING); | |
617 | NET_recvData(&Config.Sio, sizeof(Config.Sio), PSE_NET_BLOCKING); | |
618 | NET_recvData(&Config.SpuIrq, sizeof(Config.SpuIrq), PSE_NET_BLOCKING); | |
619 | NET_recvData(&Config.RCntFix, sizeof(Config.RCntFix), PSE_NET_BLOCKING); | |
620 | NET_recvData(&Config.PsxType, sizeof(Config.PsxType), PSE_NET_BLOCKING); | |
621 | ||
622 | SysUpdate(); | |
623 | ||
624 | tmp = Config.Cpu; | |
625 | NET_recvData(&Config.Cpu, sizeof(Config.Cpu), PSE_NET_BLOCKING); | |
626 | if (tmp != Config.Cpu) { | |
627 | psxCpu->Shutdown(); | |
628 | #ifdef PSXREC | |
629 | if (Config.Cpu == CPU_INTERPRETER) psxCpu = &psxInt; | |
630 | else psxCpu = &psxRec; | |
631 | #else | |
632 | psxCpu = &psxInt; | |
633 | #endif | |
634 | if (psxCpu->Init() == -1) { | |
635 | SysClose(); return -1; | |
636 | } | |
637 | psxCpu->Reset(); | |
638 | } | |
639 | ||
640 | return 0; | |
641 | } | |
642 | ||
643 | // remove the leading and trailing spaces in a string | |
644 | void trim(char *str) { | |
645 | int pos = 0; | |
646 | char *dest = str; | |
647 | ||
648 | // skip leading blanks | |
649 | while (str[pos] <= ' ' && str[pos] > 0) | |
650 | pos++; | |
651 | ||
652 | while (str[pos]) { | |
653 | *(dest++) = str[pos]; | |
654 | pos++; | |
655 | } | |
656 | ||
657 | *(dest--) = '\0'; // store the null | |
658 | ||
659 | // remove trailing blanks | |
660 | while (dest >= str && *dest <= ' ' && *dest > 0) | |
661 | *(dest--) = '\0'; | |
662 | } | |
663 | ||
664 | // lookup table for crc calculation | |
665 | static unsigned short crctab[256] = { | |
666 | 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7, 0x8108, | |
667 | 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF, 0x1231, 0x0210, | |
668 | 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6, 0x9339, 0x8318, 0xB37B, | |
669 | 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE, 0x2462, 0x3443, 0x0420, 0x1401, | |
670 | 0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, | |
671 | 0xF5CF, 0xC5AC, 0xD58D, 0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, | |
672 | 0x5695, 0x46B4, 0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, | |
673 | 0xC7BC, 0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823, | |
674 | 0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B, 0x5AF5, | |
675 | 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12, 0xDBFD, 0xCBDC, | |
676 | 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A, 0x6CA6, 0x7C87, 0x4CE4, | |
677 | 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41, 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, | |
678 | 0xAD2A, 0xBD0B, 0x8D68, 0x9D49, 0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, | |
679 | 0x2E32, 0x1E51, 0x0E70, 0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, | |
680 | 0x9F59, 0x8F78, 0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, | |
681 | 0xE16F, 0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067, | |
682 | 0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E, 0x02B1, | |
683 | 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256, 0xB5EA, 0xA5CB, | |
684 | 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D, 0x34E2, 0x24C3, 0x14A0, | |
685 | 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xA7DB, 0xB7FA, 0x8799, 0x97B8, | |
686 | 0xE75F, 0xF77E, 0xC71D, 0xD73C, 0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, | |
687 | 0x7676, 0x4615, 0x5634, 0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, | |
688 | 0xB98A, 0xA9AB, 0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, | |
689 | 0x28A3, 0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A, | |
690 | 0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92, 0xFD2E, | |
691 | 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9, 0x7C26, 0x6C07, | |
692 | 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1, 0xEF1F, 0xFF3E, 0xCF5D, | |
693 | 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8, 0x6E17, 0x7E36, 0x4E55, 0x5E74, | |
694 | 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0 | |
695 | }; | |
696 | ||
697 | u16 calcCrc(u8 *d, int len) { | |
698 | u16 crc = 0; | |
699 | int i; | |
700 | ||
701 | for (i = 0; i < len; i++) { | |
702 | crc = crctab[(crc >> 8) ^ d[i]] ^ (crc << 8); | |
703 | } | |
704 | ||
705 | return ~crc; | |
706 | } |