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cdrom: report read errors correctly
[pcsx_rearmed.git] / libpcsxcore / misc.c
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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 <stddef.h>
25#include "misc.h"
26#include "cdrom.h"
27#include "mdec.h"
28#include "gpu.h"
29#include "ppf.h"
30#include "database.h"
31#include <zlib.h>
32
33char CdromId[10] = "";
34char CdromLabel[33] = "";
35
36// PSX Executable types
37#define PSX_EXE 1
38#define CPE_EXE 2
39#define COFF_EXE 3
40#define INVALID_EXE 4
41
42#define ISODCL(from, to) (to - from + 1)
43
44struct iso_directory_record {
45 char length [ISODCL (1, 1)]; /* 711 */
46 char ext_attr_length [ISODCL (2, 2)]; /* 711 */
47 char extent [ISODCL (3, 10)]; /* 733 */
48 char size [ISODCL (11, 18)]; /* 733 */
49 char date [ISODCL (19, 25)]; /* 7 by 711 */
50 char flags [ISODCL (26, 26)];
51 char file_unit_size [ISODCL (27, 27)]; /* 711 */
52 char interleave [ISODCL (28, 28)]; /* 711 */
53 char volume_sequence_number [ISODCL (29, 32)]; /* 723 */
54 unsigned char name_len [ISODCL (33, 33)]; /* 711 */
55 char name [1];
56};
57
58static void mmssdd( char *b, char *p )
59{
60 int m, s, d;
61 unsigned char *ub = (void *)b;
62 int block = (ub[3] << 24) | (ub[2] << 16) | (ub[1] << 8) | ub[0];
63
64 block += 150;
65 m = block / 4500; // minutes
66 block = block - m * 4500; // minutes rest
67 s = block / 75; // seconds
68 d = block - s * 75; // seconds rest
69
70 m = ((m / 10) << 4) | m % 10;
71 s = ((s / 10) << 4) | s % 10;
72 d = ((d / 10) << 4) | d % 10;
73
74 p[0] = m;
75 p[1] = s;
76 p[2] = d;
77}
78
79#define incTime() \
80 time[0] = btoi(time[0]); time[1] = btoi(time[1]); time[2] = btoi(time[2]); \
81 time[2]++; \
82 if(time[2] == 75) { \
83 time[2] = 0; \
84 time[1]++; \
85 if (time[1] == 60) { \
86 time[1] = 0; \
87 time[0]++; \
88 } \
89 } \
90 time[0] = itob(time[0]); time[1] = itob(time[1]); time[2] = itob(time[2]);
91
92#define READTRACK() \
93 if (!CDR_readTrack(time)) return -1; \
94 buf = (void *)CDR_getBuffer(); \
95 if (buf == NULL) return -1; \
96 else CheckPPFCache((u8 *)buf, time[0], time[1], time[2]);
97
98#define READDIR(_dir) \
99 READTRACK(); \
100 memcpy(_dir, buf + 12, 2048); \
101 \
102 incTime(); \
103 READTRACK(); \
104 memcpy(_dir + 2048, buf + 12, 2048);
105
106int GetCdromFile(u8 *mdir, u8 *time, char *filename) {
107 struct iso_directory_record *dir;
108 int retval = -1;
109 u8 ddir[4096];
110 u8 *buf;
111 int i;
112
113 // only try to scan if a filename is given
114 if (!strlen(filename)) return -1;
115
116 i = 0;
117 while (i < 4096) {
118 dir = (struct iso_directory_record*) &mdir[i];
119 if (dir->length[0] == 0) {
120 return -1;
121 }
122 i += (u8)dir->length[0];
123
124 if (dir->flags[0] & 0x2) { // it's a dir
125 if (!strnicmp((char *)&dir->name[0], filename, dir->name_len[0])) {
126 if (filename[dir->name_len[0]] != '\\') continue;
127
128 filename += dir->name_len[0] + 1;
129
130 mmssdd(dir->extent, (char *)time);
131 READDIR(ddir);
132 i = 0;
133 mdir = ddir;
134 }
135 } else {
136 if (!strnicmp((char *)&dir->name[0], filename, strlen(filename))) {
137 mmssdd(dir->extent, (char *)time);
138 retval = 0;
139 break;
140 }
141 }
142 }
143 return retval;
144}
145
146static const unsigned int gpu_ctl_def[] = {
147 0x00000000, 0x01000000, 0x03000000, 0x04000000,
148 0x05000800, 0x06c60260, 0x0703fc10, 0x08000027,
149};
150
151static const unsigned int gpu_data_def[] = {
152 0xe100360b, 0xe2000000, 0xe3000800, 0xe4077e7f,
153 0xe5001000, 0xe6000000,
154 0x02000000, 0x00000000, 0x01ff03ff,
155};
156
157static void fake_bios_gpu_setup(void)
158{
159 int i;
160
161 for (i = 0; i < sizeof(gpu_ctl_def) / sizeof(gpu_ctl_def[0]); i++)
162 GPU_writeStatus(gpu_ctl_def[i]);
163
164 for (i = 0; i < sizeof(gpu_data_def) / sizeof(gpu_data_def[0]); i++)
165 GPU_writeData(gpu_data_def[i]);
166}
167
168int LoadCdrom() {
169 EXE_HEADER tmpHead;
170 struct iso_directory_record *dir;
171 u8 time[4], *buf;
172 u8 mdir[4096];
173 char exename[256];
174
175 // not the best place to do it, but since BIOS boot logo killer
176 // is just below, do it here
177 fake_bios_gpu_setup();
178
179 if (!Config.HLE && !Config.SlowBoot) {
180 // skip BIOS logos
181 psxRegs.pc = psxRegs.GPR.n.ra;
182 return 0;
183 }
184
185 time[0] = itob(0); time[1] = itob(2); time[2] = itob(0x10);
186
187 READTRACK();
188
189 // skip head and sub, and go to the root directory record
190 dir = (struct iso_directory_record*) &buf[12+156];
191
192 mmssdd(dir->extent, (char*)time);
193
194 READDIR(mdir);
195
196 // Load SYSTEM.CNF and scan for the main executable
197 if (GetCdromFile(mdir, time, "SYSTEM.CNF;1") == -1) {
198 // if SYSTEM.CNF is missing, start an existing PSX.EXE
199 if (GetCdromFile(mdir, time, "PSX.EXE;1") == -1) return -1;
200
201 READTRACK();
202 }
203 else {
204 // read the SYSTEM.CNF
205 READTRACK();
206
207 sscanf((char *)buf + 12, "BOOT = cdrom:\\%255s", exename);
208 if (GetCdromFile(mdir, time, exename) == -1) {
209 sscanf((char *)buf + 12, "BOOT = cdrom:%255s", exename);
210 if (GetCdromFile(mdir, time, exename) == -1) {
211 char *ptr = strstr((char *)buf + 12, "cdrom:");
212 if (ptr != NULL) {
213 ptr += 6;
214 while (*ptr == '\\' || *ptr == '/') ptr++;
215 strncpy(exename, ptr, 255);
216 exename[255] = '\0';
217 ptr = exename;
218 while (*ptr != '\0' && *ptr != '\r' && *ptr != '\n') ptr++;
219 *ptr = '\0';
220 if (GetCdromFile(mdir, time, exename) == -1)
221 return -1;
222 } else
223 return -1;
224 }
225 }
226
227 // Read the EXE-Header
228 READTRACK();
229 }
230
231 memcpy(&tmpHead, buf + 12, sizeof(EXE_HEADER));
232
233 psxRegs.pc = SWAP32(tmpHead.pc0);
234 psxRegs.GPR.n.gp = SWAP32(tmpHead.gp0);
235 psxRegs.GPR.n.sp = SWAP32(tmpHead.s_addr);
236 if (psxRegs.GPR.n.sp == 0) psxRegs.GPR.n.sp = 0x801fff00;
237
238 tmpHead.t_size = SWAP32(tmpHead.t_size);
239 tmpHead.t_addr = SWAP32(tmpHead.t_addr);
240
241 psxCpu->Clear(tmpHead.t_addr, tmpHead.t_size / 4);
242 psxCpu->Reset();
243
244 // Read the rest of the main executable
245 while (tmpHead.t_size & ~2047) {
246 void *ptr = (void *)PSXM(tmpHead.t_addr);
247
248 incTime();
249 READTRACK();
250
251 if (ptr != INVALID_PTR) memcpy(ptr, buf+12, 2048);
252
253 tmpHead.t_size -= 2048;
254 tmpHead.t_addr += 2048;
255 }
256
257 return 0;
258}
259
260int LoadCdromFile(const char *filename, EXE_HEADER *head) {
261 struct iso_directory_record *dir;
262 u8 time[4],*buf;
263 u8 mdir[4096];
264 char exename[256];
265 u32 size, addr;
266 void *mem;
267
268 sscanf(filename, "cdrom:\\%255s", exename);
269
270 time[0] = itob(0); time[1] = itob(2); time[2] = itob(0x10);
271
272 READTRACK();
273
274 // skip head and sub, and go to the root directory record
275 dir = (struct iso_directory_record *)&buf[12 + 156];
276
277 mmssdd(dir->extent, (char*)time);
278
279 READDIR(mdir);
280
281 if (GetCdromFile(mdir, time, exename) == -1) return -1;
282
283 READTRACK();
284
285 memcpy(head, buf + 12, sizeof(EXE_HEADER));
286 size = head->t_size;
287 addr = head->t_addr;
288
289 psxCpu->Clear(addr, size / 4);
290 psxCpu->Reset();
291
292 while (size & ~2047) {
293 incTime();
294 READTRACK();
295
296 mem = PSXM(addr);
297 if (mem != INVALID_PTR)
298 memcpy(mem, buf + 12, 2048);
299
300 size -= 2048;
301 addr += 2048;
302 }
303
304 return 0;
305}
306
307int CheckCdrom() {
308 struct iso_directory_record *dir;
309 unsigned char time[4];
310 char *buf;
311 unsigned char mdir[4096];
312 char exename[256];
313 int i, len, c;
314
315 FreePPFCache();
316
317 time[0] = itob(0);
318 time[1] = itob(2);
319 time[2] = itob(0x10);
320
321 READTRACK();
322
323 memset(CdromLabel, 0, sizeof(CdromLabel));
324 memset(CdromId, 0, sizeof(CdromId));
325 memset(exename, 0, sizeof(exename));
326
327 strncpy(CdromLabel, buf + 52, 32);
328
329 // skip head and sub, and go to the root directory record
330 dir = (struct iso_directory_record *)&buf[12 + 156];
331
332 mmssdd(dir->extent, (char *)time);
333
334 READDIR(mdir);
335
336 if (GetCdromFile(mdir, time, "SYSTEM.CNF;1") != -1) {
337 READTRACK();
338
339 sscanf(buf + 12, "BOOT = cdrom:\\%255s", exename);
340 if (GetCdromFile(mdir, time, exename) == -1) {
341 sscanf(buf + 12, "BOOT = cdrom:%255s", exename);
342 if (GetCdromFile(mdir, time, exename) == -1) {
343 char *ptr = strstr(buf + 12, "cdrom:"); // possibly the executable is in some subdir
344 if (ptr != NULL) {
345 ptr += 6;
346 while (*ptr == '\\' || *ptr == '/') ptr++;
347 strncpy(exename, ptr, 255);
348 exename[255] = '\0';
349 ptr = exename;
350 while (*ptr != '\0' && *ptr != '\r' && *ptr != '\n') ptr++;
351 *ptr = '\0';
352 if (GetCdromFile(mdir, time, exename) == -1)
353 return -1; // main executable not found
354 } else
355 return -1;
356 }
357 }
358 /* Workaround for Wild Arms EU/US which has non-standard string causing incorrect region detection */
359 if (exename[0] == 'E' && exename[1] == 'X' && exename[2] == 'E' && exename[3] == '\\') {
360 size_t offset = 4;
361 size_t i, len = strlen(exename) - offset;
362 for (i = 0; i < len; i++)
363 exename[i] = exename[i + offset];
364 exename[i] = '\0';
365 }
366 } else if (GetCdromFile(mdir, time, "PSX.EXE;1") != -1) {
367 strcpy(exename, "PSX.EXE;1");
368 strcpy(CdromId, "SLUS99999");
369 } else
370 return -1; // SYSTEM.CNF and PSX.EXE not found
371
372 if (CdromId[0] == '\0') {
373 len = strlen(exename);
374 c = 0;
375 for (i = 0; i < len; ++i) {
376 if (exename[i] == ';' || c >= sizeof(CdromId) - 1)
377 break;
378 if (isalnum(exename[i]))
379 CdromId[c++] = exename[i];
380 }
381 }
382
383 if (CdromId[0] == '\0')
384 strcpy(CdromId, "SLUS99999");
385
386 if (Config.PsxAuto) { // autodetect system (pal or ntsc)
387 if (
388 /* Make sure Wild Arms SCUS-94608 is not detected as a PAL game. */
389 ((CdromId[0] == 's' || CdromId[0] == 'S') && (CdromId[2] == 'e' || CdromId[2] == 'E')) ||
390 !strncmp(CdromId, "DTLS3035", 8) ||
391 !strncmp(CdromId, "PBPX95001", 9) || // according to redump.org, these PAL
392 !strncmp(CdromId, "PBPX95007", 9) || // discs have a non-standard ID;
393 !strncmp(CdromId, "PBPX95008", 9)) // add more serials if they are discovered.
394 Config.PsxType = PSX_TYPE_PAL; // pal
395 else Config.PsxType = PSX_TYPE_NTSC; // ntsc
396 }
397
398 if (CdromLabel[0] == ' ') {
399 strncpy(CdromLabel, CdromId, 9);
400 }
401 SysPrintf(_("CD-ROM Label: %.32s\n"), CdromLabel);
402 SysPrintf(_("CD-ROM ID: %.9s\n"), CdromId);
403 SysPrintf(_("CD-ROM EXE Name: %.255s\n"), exename);
404
405 Apply_Hacks_Cdrom();
406
407 BuildPPFCache();
408
409 return 0;
410}
411
412static int PSXGetFileType(FILE *f) {
413 unsigned long current;
414 u8 mybuf[2048];
415 EXE_HEADER *exe_hdr;
416 FILHDR *coff_hdr;
417
418 current = ftell(f);
419 fseek(f, 0L, SEEK_SET);
420 if (fread(&mybuf, 1, sizeof(mybuf), f) != sizeof(mybuf))
421 goto io_fail;
422
423 fseek(f, current, SEEK_SET);
424
425 exe_hdr = (EXE_HEADER *)mybuf;
426 if (memcmp(exe_hdr->id, "PS-X EXE", 8) == 0)
427 return PSX_EXE;
428
429 if (mybuf[0] == 'C' && mybuf[1] == 'P' && mybuf[2] == 'E')
430 return CPE_EXE;
431
432 coff_hdr = (FILHDR *)mybuf;
433 if (SWAPu16(coff_hdr->f_magic) == 0x0162)
434 return COFF_EXE;
435
436 return INVALID_EXE;
437
438io_fail:
439#ifndef NDEBUG
440 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
441#endif
442 return INVALID_EXE;
443}
444
445// temporary pandora workaround..
446// FIXME: remove
447size_t fread_to_ram(void *ptr, size_t size, size_t nmemb, FILE *stream)
448{
449 void *tmp;
450 size_t ret = 0;
451
452 tmp = malloc(size * nmemb);
453 if (tmp) {
454 ret = fread(tmp, size, nmemb, stream);
455 memcpy(ptr, tmp, size * nmemb);
456 free(tmp);
457 }
458 return ret;
459}
460
461int Load(const char *ExePath) {
462 FILE *tmpFile;
463 EXE_HEADER tmpHead;
464 int type;
465 int retval = 0;
466 u8 opcode;
467 u32 section_address, section_size;
468 void *mem;
469
470 strcpy(CdromId, "SLUS99999");
471 strcpy(CdromLabel, "SLUS_999.99");
472
473 tmpFile = fopen(ExePath, "rb");
474 if (tmpFile == NULL) {
475 SysPrintf(_("Error opening file: %s.\n"), ExePath);
476 retval = -1;
477 } else {
478 type = PSXGetFileType(tmpFile);
479 switch (type) {
480 case PSX_EXE:
481 if (fread(&tmpHead, 1, sizeof(EXE_HEADER), tmpFile) != sizeof(EXE_HEADER))
482 goto fail_io;
483 section_address = SWAP32(tmpHead.t_addr);
484 section_size = SWAP32(tmpHead.t_size);
485 mem = PSXM(section_address);
486 if (mem != INVALID_PTR) {
487 fseek(tmpFile, 0x800, SEEK_SET);
488 fread_to_ram(mem, section_size, 1, tmpFile);
489 psxCpu->Clear(section_address, section_size / 4);
490 }
491 psxRegs.pc = SWAP32(tmpHead.pc0);
492 psxRegs.GPR.n.gp = SWAP32(tmpHead.gp0);
493 psxRegs.GPR.n.sp = SWAP32(tmpHead.s_addr);
494 if (psxRegs.GPR.n.sp == 0)
495 psxRegs.GPR.n.sp = 0x801fff00;
496 retval = 0;
497 break;
498 case CPE_EXE:
499 fseek(tmpFile, 6, SEEK_SET); /* Something tells me we should go to 4 and read the "08 00" here... */
500 do {
501 if (fread(&opcode, 1, sizeof(opcode), tmpFile) != sizeof(opcode))
502 goto fail_io;
503 switch (opcode) {
504 case 1: /* Section loading */
505 if (fread(&section_address, 1, sizeof(section_address), tmpFile) != sizeof(section_address))
506 goto fail_io;
507 if (fread(&section_size, 1, sizeof(section_size), tmpFile) != sizeof(section_size))
508 goto fail_io;
509 section_address = SWAPu32(section_address);
510 section_size = SWAPu32(section_size);
511#ifdef EMU_LOG
512 EMU_LOG("Loading %08X bytes from %08X to %08X\n", section_size, ftell(tmpFile), section_address);
513#endif
514 mem = PSXM(section_address);
515 if (mem != INVALID_PTR) {
516 fread_to_ram(mem, section_size, 1, tmpFile);
517 psxCpu->Clear(section_address, section_size / 4);
518 }
519 break;
520 case 3: /* register loading (PC only?) */
521 fseek(tmpFile, 2, SEEK_CUR); /* unknown field */
522 if (fread(&psxRegs.pc, 1, sizeof(psxRegs.pc), tmpFile) != sizeof(psxRegs.pc))
523 goto fail_io;
524 psxRegs.pc = SWAPu32(psxRegs.pc);
525 break;
526 case 0: /* End of file */
527 break;
528 default:
529 SysPrintf(_("Unknown CPE opcode %02x at position %08x.\n"), opcode, ftell(tmpFile) - 1);
530 retval = -1;
531 break;
532 }
533 } while (opcode != 0 && retval == 0);
534 break;
535 case COFF_EXE:
536 SysPrintf(_("COFF files not supported.\n"));
537 retval = -1;
538 break;
539 case INVALID_EXE:
540 SysPrintf(_("This file does not appear to be a valid PSX EXE file.\n"));
541 SysPrintf(_("(did you forget -cdfile ?)\n"));
542 retval = -1;
543 break;
544 }
545 }
546
547 if (retval != 0) {
548 CdromId[0] = '\0';
549 CdromLabel[0] = '\0';
550 }
551
552 if (tmpFile)
553 fclose(tmpFile);
554 return retval;
555
556fail_io:
557#ifndef NDEBUG
558 SysPrintf(_("File IO error in <%s:%s>.\n"), __FILE__, __func__);
559#endif
560 fclose(tmpFile);
561 return -1;
562}
563
564// STATES
565
566static void *zlib_open(const char *name, const char *mode)
567{
568 return gzopen(name, mode);
569}
570
571static int zlib_read(void *file, void *buf, u32 len)
572{
573 return gzread(file, buf, len);
574}
575
576static int zlib_write(void *file, const void *buf, u32 len)
577{
578 return gzwrite(file, buf, len);
579}
580
581static long zlib_seek(void *file, long offs, int whence)
582{
583 return gzseek(file, offs, whence);
584}
585
586static void zlib_close(void *file)
587{
588 gzclose(file);
589}
590
591struct PcsxSaveFuncs SaveFuncs = {
592 zlib_open, zlib_read, zlib_write, zlib_seek, zlib_close
593};
594
595static const char PcsxHeader[32] = "STv4 PCSX v" PCSX_VERSION;
596
597// Savestate Versioning!
598// If you make changes to the savestate version, please increment the value below.
599static const u32 SaveVersion = 0x8b410006;
600
601int SaveState(const char *file) {
602 void *f;
603 GPUFreeze_t *gpufP;
604 SPUFreeze_t *spufP;
605 int Size;
606 unsigned char *pMem;
607
608 f = SaveFuncs.open(file, "wb");
609 if (f == NULL) return -1;
610
611 new_dyna_before_save();
612
613 SaveFuncs.write(f, (void *)PcsxHeader, 32);
614 SaveFuncs.write(f, (void *)&SaveVersion, sizeof(u32));
615 SaveFuncs.write(f, (void *)&Config.HLE, sizeof(boolean));
616
617 pMem = (unsigned char *)malloc(128 * 96 * 3);
618 if (pMem == NULL) return -1;
619 GPU_getScreenPic(pMem);
620 SaveFuncs.write(f, pMem, 128 * 96 * 3);
621 free(pMem);
622
623 if (Config.HLE)
624 psxBiosFreeze(1);
625
626 SaveFuncs.write(f, psxM, 0x00200000);
627 SaveFuncs.write(f, psxR, 0x00080000);
628 SaveFuncs.write(f, psxH, 0x00010000);
629 // only partial save of psxRegisters to maintain savestate compat
630 SaveFuncs.write(f, &psxRegs, offsetof(psxRegisters, gteBusyCycle));
631
632 // gpu
633 gpufP = (GPUFreeze_t *)malloc(sizeof(GPUFreeze_t));
634 gpufP->ulFreezeVersion = 1;
635 GPU_freeze(1, gpufP);
636 SaveFuncs.write(f, gpufP, sizeof(GPUFreeze_t));
637 free(gpufP);
638
639 // spu
640 spufP = (SPUFreeze_t *) malloc(16);
641 SPU_freeze(2, spufP, psxRegs.cycle);
642 Size = spufP->Size; SaveFuncs.write(f, &Size, 4);
643 free(spufP);
644 spufP = (SPUFreeze_t *) malloc(Size);
645 SPU_freeze(1, spufP, psxRegs.cycle);
646 SaveFuncs.write(f, spufP, Size);
647 free(spufP);
648
649 sioFreeze(f, 1);
650 cdrFreeze(f, 1);
651 psxHwFreeze(f, 1);
652 psxRcntFreeze(f, 1);
653 mdecFreeze(f, 1);
654 new_dyna_freeze(f, 1);
655
656 SaveFuncs.close(f);
657
658 new_dyna_after_save();
659
660 return 0;
661}
662
663int LoadState(const char *file) {
664 void *f;
665 GPUFreeze_t *gpufP;
666 SPUFreeze_t *spufP;
667 int Size;
668 char header[32];
669 u32 version;
670 boolean hle;
671
672 f = SaveFuncs.open(file, "rb");
673 if (f == NULL) return -1;
674
675 SaveFuncs.read(f, header, sizeof(header));
676 SaveFuncs.read(f, &version, sizeof(u32));
677 SaveFuncs.read(f, &hle, sizeof(boolean));
678
679 if (strncmp("STv4 PCSX", header, 9) != 0 || version != SaveVersion) {
680 SaveFuncs.close(f);
681 return -1;
682 }
683 Config.HLE = hle;
684
685 if (Config.HLE)
686 psxBiosInit();
687
688 psxCpu->Reset();
689 SaveFuncs.seek(f, 128 * 96 * 3, SEEK_CUR);
690
691 SaveFuncs.read(f, psxM, 0x00200000);
692 SaveFuncs.read(f, psxR, 0x00080000);
693 SaveFuncs.read(f, psxH, 0x00010000);
694 SaveFuncs.read(f, &psxRegs, offsetof(psxRegisters, gteBusyCycle));
695 psxRegs.gteBusyCycle = psxRegs.cycle;
696
697 if (Config.HLE)
698 psxBiosFreeze(0);
699
700 // gpu
701 gpufP = (GPUFreeze_t *)malloc(sizeof(GPUFreeze_t));
702 SaveFuncs.read(f, gpufP, sizeof(GPUFreeze_t));
703 GPU_freeze(0, gpufP);
704 free(gpufP);
705 if (HW_GPU_STATUS == 0)
706 HW_GPU_STATUS = SWAP32(GPU_readStatus());
707
708 // spu
709 SaveFuncs.read(f, &Size, 4);
710 spufP = (SPUFreeze_t *)malloc(Size);
711 SaveFuncs.read(f, spufP, Size);
712 SPU_freeze(0, spufP, psxRegs.cycle);
713 free(spufP);
714
715 sioFreeze(f, 0);
716 cdrFreeze(f, 0);
717 psxHwFreeze(f, 0);
718 psxRcntFreeze(f, 0);
719 mdecFreeze(f, 0);
720 new_dyna_freeze(f, 0);
721
722 SaveFuncs.close(f);
723
724 return 0;
725}
726
727int CheckState(const char *file) {
728 void *f;
729 char header[32];
730 u32 version;
731 boolean hle;
732
733 f = SaveFuncs.open(file, "rb");
734 if (f == NULL) return -1;
735
736 SaveFuncs.read(f, header, sizeof(header));
737 SaveFuncs.read(f, &version, sizeof(u32));
738 SaveFuncs.read(f, &hle, sizeof(boolean));
739
740 SaveFuncs.close(f);
741
742 if (strncmp("STv4 PCSX", header, 9) != 0 || version != SaveVersion)
743 return -1;
744
745 return 0;
746}
747
748// NET Function Helpers
749
750int SendPcsxInfo() {
751 if (NET_recvData == NULL || NET_sendData == NULL)
752 return 0;
753
754 boolean Sio_old = 0;
755 boolean SpuIrq_old = 0;
756 boolean RCntFix_old = 0;
757 NET_sendData(&Config.Xa, sizeof(Config.Xa), PSE_NET_BLOCKING);
758 NET_sendData(&Sio_old, sizeof(Sio_old), PSE_NET_BLOCKING);
759 NET_sendData(&SpuIrq_old, sizeof(SpuIrq_old), PSE_NET_BLOCKING);
760 NET_sendData(&RCntFix_old, sizeof(RCntFix_old), PSE_NET_BLOCKING);
761 NET_sendData(&Config.PsxType, sizeof(Config.PsxType), PSE_NET_BLOCKING);
762 NET_sendData(&Config.Cpu, sizeof(Config.Cpu), PSE_NET_BLOCKING);
763
764 return 0;
765}
766
767int RecvPcsxInfo() {
768 int tmp;
769
770 if (NET_recvData == NULL || NET_sendData == NULL)
771 return 0;
772
773 boolean Sio_old = 0;
774 boolean SpuIrq_old = 0;
775 boolean RCntFix_old = 0;
776 NET_recvData(&Config.Xa, sizeof(Config.Xa), PSE_NET_BLOCKING);
777 NET_recvData(&Sio_old, sizeof(Sio_old), PSE_NET_BLOCKING);
778 NET_recvData(&SpuIrq_old, sizeof(SpuIrq_old), PSE_NET_BLOCKING);
779 NET_recvData(&RCntFix_old, sizeof(RCntFix_old), PSE_NET_BLOCKING);
780 NET_recvData(&Config.PsxType, sizeof(Config.PsxType), PSE_NET_BLOCKING);
781
782 SysUpdate();
783
784 tmp = Config.Cpu;
785 NET_recvData(&Config.Cpu, sizeof(Config.Cpu), PSE_NET_BLOCKING);
786 if (tmp != Config.Cpu) {
787 psxCpu->Shutdown();
788#ifndef DRC_DISABLE
789 if (Config.Cpu == CPU_INTERPRETER) psxCpu = &psxInt;
790 else psxCpu = &psxRec;
791#else
792 psxCpu = &psxInt;
793#endif
794 if (psxCpu->Init() == -1) {
795 SysClose(); return -1;
796 }
797 psxCpu->Reset();
798 }
799
800 return 0;
801}
802
803// remove the leading and trailing spaces in a string
804void trim(char *str) {
805 int pos = 0;
806 char *dest = str;
807
808 // skip leading blanks
809 while (str[pos] <= ' ' && str[pos] > 0)
810 pos++;
811
812 while (str[pos]) {
813 *(dest++) = str[pos];
814 pos++;
815 }
816
817 *(dest--) = '\0'; // store the null
818
819 // remove trailing blanks
820 while (dest >= str && *dest <= ' ' && *dest > 0)
821 *(dest--) = '\0';
822}
823
824// lookup table for crc calculation
825static unsigned short crctab[256] = {
826 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7, 0x8108,
827 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF, 0x1231, 0x0210,
828 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6, 0x9339, 0x8318, 0xB37B,
829 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE, 0x2462, 0x3443, 0x0420, 0x1401,
830 0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE,
831 0xF5CF, 0xC5AC, 0xD58D, 0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6,
832 0x5695, 0x46B4, 0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D,
833 0xC7BC, 0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
834 0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B, 0x5AF5,
835 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12, 0xDBFD, 0xCBDC,
836 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A, 0x6CA6, 0x7C87, 0x4CE4,
837 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41, 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD,
838 0xAD2A, 0xBD0B, 0x8D68, 0x9D49, 0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13,
839 0x2E32, 0x1E51, 0x0E70, 0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A,
840 0x9F59, 0x8F78, 0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E,
841 0xE16F, 0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
842 0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E, 0x02B1,
843 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256, 0xB5EA, 0xA5CB,
844 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D, 0x34E2, 0x24C3, 0x14A0,
845 0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xA7DB, 0xB7FA, 0x8799, 0x97B8,
846 0xE75F, 0xF77E, 0xC71D, 0xD73C, 0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657,
847 0x7676, 0x4615, 0x5634, 0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9,
848 0xB98A, 0xA9AB, 0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882,
849 0x28A3, 0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
850 0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92, 0xFD2E,
851 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9, 0x7C26, 0x6C07,
852 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1, 0xEF1F, 0xFF3E, 0xCF5D,
853 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8, 0x6E17, 0x7E36, 0x4E55, 0x5E74,
854 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
855};
856
857u16 calcCrc(u8 *d, int len) {
858 u16 crc = 0;
859 int i;
860
861 for (i = 0; i < len; i++) {
862 crc = crctab[(crc >> 8) ^ d[i]] ^ (crc << 8);
863 }
864
865 return ~crc;
866}
ARM optimized PCSX fork