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cd: fix yet more desyncs
[picodrive.git] / pico / state.c
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cff531af 1/*\r
2 * PicoDrive\r
3 * (C) notaz, 2010\r
4 *\r
5 * This work is licensed under the terms of MAME license.\r
6 * See COPYING file in the top-level directory.\r
7 */\r
b4db550e 8\r
9#include "pico_int.h"\r
10#include <zlib/zlib.h>\r
11\r
12#include "../cpu/sh2/sh2.h"\r
13#include "sound/ym2612.h"\r
86b38dc4 14#include "state.h"\r
b4db550e 15\r
16// sn76496\r
17extern int *sn76496_regs;\r
18\r
b4db550e 19static arearw *areaRead;\r
20static arearw *areaWrite;\r
21static areaeof *areaEof;\r
22static areaseek *areaSeek;\r
23static areaclose *areaClose;\r
24\r
25carthw_state_chunk *carthw_chunks;\r
26void (*PicoStateProgressCB)(const char *str);\r
27void (*PicoLoadStateHook)(void);\r
28\r
29\r
30/* I/O functions */\r
31static size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
32{\r
33 return gzread(file, p, _size * _n);\r
34}\r
35\r
36static size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
37{\r
38 return gzwrite(file, p, _size * _n);\r
39}\r
40\r
41static void set_cbs(int gz)\r
42{\r
43 if (gz) {\r
44 areaRead = gzRead2;\r
45 areaWrite = gzWrite2;\r
46 areaEof = (areaeof *) gzeof;\r
47 areaSeek = (areaseek *) gzseek;\r
48 areaClose = (areaclose *) gzclose;\r
49 } else {\r
50 areaRead = (arearw *) fread;\r
51 areaWrite = (arearw *) fwrite;\r
52 areaEof = (areaeof *) feof;\r
53 areaSeek = (areaseek *) fseek;\r
54 areaClose = (areaclose *) fclose;\r
55 }\r
56}\r
57\r
58static void *open_save_file(const char *fname, int is_save)\r
59{\r
60 int len = strlen(fname);\r
61 void *afile = NULL;\r
62\r
63 if (len > 3 && strcmp(fname + len - 3, ".gz") == 0)\r
64 {\r
65 if ( (afile = gzopen(fname, is_save ? "wb" : "rb")) ) {\r
66 set_cbs(1);\r
67 if (is_save)\r
68 gzsetparams(afile, 9, Z_DEFAULT_STRATEGY);\r
69 }\r
70 }\r
71 else\r
72 {\r
73 if ( (afile = fopen(fname, is_save ? "wb" : "rb")) ) {\r
74 set_cbs(0);\r
75 }\r
76 }\r
77\r
78 return afile;\r
79}\r
80\r
81// legacy savestate loading\r
82#define SCANP(f, x) areaRead(&Pico.x, sizeof(Pico.x), 1, f)\r
83\r
84static int state_load_legacy(void *file)\r
85{\r
86 unsigned char head[32];\r
87 unsigned char cpu[0x60];\r
88 unsigned char cpu_z80[Z80_STATE_SIZE];\r
89 void *ym2612_regs;\r
90 int ok;\r
91\r
92 memset(&cpu,0,sizeof(cpu));\r
93 memset(&cpu_z80,0,sizeof(cpu_z80));\r
94\r
95 memset(head, 0, sizeof(head));\r
96 areaRead(head, sizeof(head), 1, file);\r
97 if (strcmp((char *)head, "Pico") != 0)\r
98 return -1;\r
99\r
100 elprintf(EL_STATUS, "legacy savestate");\r
101\r
102 // Scan all the memory areas:\r
103 SCANP(file, ram);\r
104 SCANP(file, vram);\r
105 SCANP(file, zram);\r
106 SCANP(file, cram);\r
107 SCANP(file, vsram);\r
108\r
109 // Pack, scan and unpack the cpu data:\r
110 areaRead(cpu, sizeof(cpu), 1, file);\r
111 SekUnpackCpu(cpu, 0);\r
112\r
113 SCANP(file, m);\r
114 SCANP(file, video);\r
115\r
116 ok = areaRead(cpu_z80, sizeof(cpu_z80), 1, file) == sizeof(cpu_z80);\r
117 // do not unpack if we fail to load z80 state\r
118 if (!ok) z80_reset();\r
119 else z80_unpack(cpu_z80);\r
120\r
121 ym2612_regs = YM2612GetRegs();\r
122 areaRead(sn76496_regs, 28*4, 1, file);\r
123 areaRead(ym2612_regs, 0x200+4, 1, file);\r
124 ym2612_unpack_state();\r
125\r
126 return 0;\r
127}\r
128\r
129// ---------------------------------------------------------------------------\r
130\r
131typedef enum {\r
132 CHUNK_M68K = 1,\r
133 CHUNK_RAM,\r
134 CHUNK_VRAM,\r
135 CHUNK_ZRAM,\r
136 CHUNK_CRAM, // 5\r
137 CHUNK_VSRAM,\r
138 CHUNK_MISC,\r
139 CHUNK_VIDEO,\r
140 CHUNK_Z80,\r
141 CHUNK_PSG, // 10\r
142 CHUNK_FM,\r
143 // CD stuff\r
144 CHUNK_S68K,\r
145 CHUNK_PRG_RAM,\r
146 CHUNK_WORD_RAM,\r
147 CHUNK_PCM_RAM, // 15\r
148 CHUNK_BRAM,\r
149 CHUNK_GA_REGS,\r
150 CHUNK_PCM,\r
151 CHUNK_CDC,\r
152 CHUNK_CDD, // 20\r
153 CHUNK_SCD,\r
154 CHUNK_RC,\r
155 CHUNK_MISC_CD,\r
156 //\r
157 CHUNK_IOPORTS, // versions < 1.70 did not save that..\r
158 CHUNK_SMS, // 25\r
159 // 32x\r
160 CHUNK_MSH2,\r
161 CHUNK_MSH2_DATA,\r
162 CHUNK_MSH2_PERI,\r
163 CHUNK_SSH2,\r
164 CHUNK_SSH2_DATA, // 30\r
165 CHUNK_SSH2_PERI,\r
166 CHUNK_32XSYS,\r
167 CHUNK_M68K_BIOS,\r
168 CHUNK_MSH2_BIOS,\r
169 CHUNK_SSH2_BIOS, // 35\r
170 CHUNK_SDRAM,\r
171 CHUNK_DRAM,\r
172 CHUNK_32XPAL,\r
6a98f03e 173 CHUNK_32X_EVT,\r
27e26273 174 CHUNK_32X_FIRST = CHUNK_MSH2,\r
175 CHUNK_32X_LAST = CHUNK_32X_EVT,\r
ae214f1c 176 // add new stuff here\r
177 CHUNK_CD_EVT = 50,\r
b4db550e 178 //\r
179 CHUNK_DEFAULT_COUNT,\r
ae214f1c 180 CHUNK_CARTHW_ = CHUNK_CARTHW, // 64 (defined in PicoInt)\r
b4db550e 181} chunk_name_e;\r
182\r
cfae1ae1 183static const char * const chunk_names[CHUNK_DEFAULT_COUNT] = {\r
b4db550e 184 "INVALID!",\r
185 "M68K state",\r
186 "RAM",\r
187 "VRAM",\r
188 "ZRAM",\r
189 "CRAM", // 5\r
190 "VSRAM",\r
191 "emu state",\r
192 "VIDEO",\r
193 "Z80 state",\r
194 "PSG", // 10\r
195 "FM",\r
196 // CD stuff\r
197 "S68K state",\r
198 "PRG_RAM",\r
199 "WORD_RAM",\r
200 "PCM_RAM", // 15\r
201 "BRAM",\r
202 "GATE ARRAY regs",\r
203 "PCM state",\r
204 "CDC",\r
205 "CDD", // 20\r
206 "SCD",\r
207 "GFX chip",\r
208 "MCD state",\r
209 //\r
210 "IO",\r
211 "SMS state", // 25\r
212 // 32x\r
213 "MSH2",\r
214 "MSH2 data",\r
215 "MSH2 peri",\r
216 "SSH2",\r
217 "SSH2 data", // 30\r
218 "SSH2 peri",\r
219 "32X system regs",\r
220 "M68K BIOS",\r
221 "MSH2 BIOS",\r
222 "SSH2 BIOS", // 35\r
223 "SDRAM",\r
224 "DRAM",\r
225 "PAL",\r
6a98f03e 226 "events",\r
b4db550e 227};\r
228\r
229static int write_chunk(chunk_name_e name, int len, void *data, void *file)\r
230{\r
231 size_t bwritten = 0;\r
232 bwritten += areaWrite(&name, 1, 1, file);\r
233 bwritten += areaWrite(&len, 1, 4, file);\r
234 bwritten += areaWrite(data, 1, len, file);\r
235\r
236 return (bwritten == len + 4 + 1);\r
237}\r
238\r
239#define CHECKED_WRITE(name,len,data) { \\r
cfae1ae1 240 if (PicoStateProgressCB && name < CHUNK_DEFAULT_COUNT && chunk_names[name]) { \\r
b4db550e 241 strncpy(sbuff + 9, chunk_names[name], sizeof(sbuff) - 9); \\r
242 PicoStateProgressCB(sbuff); \\r
243 } \\r
244 if (!write_chunk(name, len, data, file)) return 1; \\r
245}\r
246\r
247#define CHECKED_WRITE_BUFF(name,buff) { \\r
cfae1ae1 248 if (PicoStateProgressCB && name < CHUNK_DEFAULT_COUNT && chunk_names[name]) { \\r
b4db550e 249 strncpy(sbuff + 9, chunk_names[name], sizeof(sbuff) - 9); \\r
250 PicoStateProgressCB(sbuff); \\r
251 } \\r
252 if (!write_chunk(name, sizeof(buff), &buff, file)) return 1; \\r
253}\r
254\r
255static int state_save(void *file)\r
256{\r
257 char sbuff[32] = "Saving.. ";\r
258 unsigned char buff[0x60], buff_z80[Z80_STATE_SIZE];\r
259 void *ym2612_regs = YM2612GetRegs();\r
260 int ver = 0x0170; // not really used..\r
261\r
262 areaWrite("PicoSEXT", 1, 8, file);\r
263 areaWrite(&ver, 1, 4, file);\r
264\r
265 if (!(PicoAHW & PAHW_SMS)) {\r
266 memset(buff, 0, sizeof(buff));\r
267 SekPackCpu(buff, 0);\r
268 CHECKED_WRITE_BUFF(CHUNK_M68K, buff);\r
269 CHECKED_WRITE_BUFF(CHUNK_RAM, Pico.ram);\r
270 CHECKED_WRITE_BUFF(CHUNK_VSRAM, Pico.vsram);\r
271 CHECKED_WRITE_BUFF(CHUNK_IOPORTS, Pico.ioports);\r
272 ym2612_pack_state();\r
273 CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs);\r
274 }\r
275 else {\r
276 CHECKED_WRITE_BUFF(CHUNK_SMS, Pico.ms);\r
277 }\r
278\r
279 CHECKED_WRITE_BUFF(CHUNK_VRAM, Pico.vram);\r
280 CHECKED_WRITE_BUFF(CHUNK_ZRAM, Pico.zram);\r
281 CHECKED_WRITE_BUFF(CHUNK_CRAM, Pico.cram);\r
282 CHECKED_WRITE_BUFF(CHUNK_MISC, Pico.m);\r
283 CHECKED_WRITE_BUFF(CHUNK_VIDEO, Pico.video);\r
284\r
285 z80_pack(buff_z80);\r
286 CHECKED_WRITE_BUFF(CHUNK_Z80, buff_z80);\r
287 CHECKED_WRITE(CHUNK_PSG, 28*4, sn76496_regs);\r
288\r
289 if (PicoAHW & PAHW_MCD)\r
290 {\r
291 memset(buff, 0, sizeof(buff));\r
292 SekPackCpu(buff, 1);\r
293 if (Pico_mcd->s68k_regs[3] & 4) // 1M mode?\r
294 wram_1M_to_2M(Pico_mcd->word_ram2M);\r
895d1512 295 memcpy(&Pico_mcd->m.hint_vector, Pico_mcd->bios + 0x72,\r
296 sizeof(Pico_mcd->m.hint_vector));\r
b4db550e 297\r
298 CHECKED_WRITE_BUFF(CHUNK_S68K, buff);\r
299 CHECKED_WRITE_BUFF(CHUNK_PRG_RAM, Pico_mcd->prg_ram);\r
300 CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram2M); // in 2M format\r
301 CHECKED_WRITE_BUFF(CHUNK_PCM_RAM, Pico_mcd->pcm_ram);\r
302 CHECKED_WRITE_BUFF(CHUNK_BRAM, Pico_mcd->bram);\r
303 CHECKED_WRITE_BUFF(CHUNK_GA_REGS, Pico_mcd->s68k_regs); // GA regs, not CPU regs\r
304 CHECKED_WRITE_BUFF(CHUNK_PCM, Pico_mcd->pcm);\r
305 CHECKED_WRITE_BUFF(CHUNK_CDD, Pico_mcd->cdd);\r
306 CHECKED_WRITE_BUFF(CHUNK_CDC, Pico_mcd->cdc);\r
307 CHECKED_WRITE_BUFF(CHUNK_SCD, Pico_mcd->scd);\r
308 CHECKED_WRITE_BUFF(CHUNK_RC, Pico_mcd->rot_comp);\r
309 CHECKED_WRITE_BUFF(CHUNK_MISC_CD, Pico_mcd->m);\r
ae214f1c 310 memset(buff, 0, 0x40);\r
311 memcpy(buff, pcd_event_times, sizeof(pcd_event_times));\r
312 CHECKED_WRITE(CHUNK_CD_EVT, 0x40, buff);\r
b4db550e 313\r
314 if (Pico_mcd->s68k_regs[3] & 4) // convert back\r
315 wram_2M_to_1M(Pico_mcd->word_ram2M);\r
316 }\r
317\r
f3a57b2d 318#ifndef NO_32X\r
b4db550e 319 if (PicoAHW & PAHW_32X)\r
320 {\r
321 unsigned char cpubuff[SH2_STATE_SIZE];\r
322\r
323 memset(cpubuff, 0, sizeof(cpubuff));\r
324\r
325 sh2_pack(&sh2s[0], cpubuff);\r
326 CHECKED_WRITE_BUFF(CHUNK_MSH2, cpubuff);\r
f81107f5 327 CHECKED_WRITE_BUFF(CHUNK_MSH2_DATA, sh2s[0].data_array);\r
328 CHECKED_WRITE_BUFF(CHUNK_MSH2_PERI, sh2s[0].peri_regs);\r
b4db550e 329\r
330 sh2_pack(&sh2s[1], cpubuff);\r
331 CHECKED_WRITE_BUFF(CHUNK_SSH2, cpubuff);\r
f81107f5 332 CHECKED_WRITE_BUFF(CHUNK_SSH2_DATA, sh2s[1].data_array);\r
333 CHECKED_WRITE_BUFF(CHUNK_SSH2_PERI, sh2s[1].peri_regs);\r
b4db550e 334\r
335 CHECKED_WRITE_BUFF(CHUNK_32XSYS, Pico32x);\r
336 CHECKED_WRITE_BUFF(CHUNK_M68K_BIOS, Pico32xMem->m68k_rom);\r
337 CHECKED_WRITE_BUFF(CHUNK_MSH2_BIOS, Pico32xMem->sh2_rom_m);\r
338 CHECKED_WRITE_BUFF(CHUNK_SSH2_BIOS, Pico32xMem->sh2_rom_s);\r
339 CHECKED_WRITE_BUFF(CHUNK_SDRAM, Pico32xMem->sdram);\r
340 CHECKED_WRITE_BUFF(CHUNK_DRAM, Pico32xMem->dram);\r
341 CHECKED_WRITE_BUFF(CHUNK_32XPAL, Pico32xMem->pal);\r
ed4402a7 342\r
6a98f03e 343 memset(buff, 0, 0x40);\r
ae214f1c 344 memcpy(buff, p32x_event_times, sizeof(p32x_event_times));\r
6a98f03e 345 CHECKED_WRITE(CHUNK_32X_EVT, 0x40, buff);\r
b4db550e 346 }\r
f3a57b2d 347#endif\r
b4db550e 348\r
349 if (carthw_chunks != NULL)\r
350 {\r
351 carthw_state_chunk *chwc;\r
352 if (PicoStateProgressCB)\r
353 PicoStateProgressCB("Saving.. cart hw state");\r
354 for (chwc = carthw_chunks; chwc->ptr != NULL; chwc++)\r
355 CHECKED_WRITE(chwc->chunk, chwc->size, chwc->ptr);\r
356 }\r
357\r
358 return 0;\r
359}\r
360\r
361static int g_read_offs = 0;\r
362\r
363#define R_ERROR_RETURN(error) \\r
364{ \\r
365 elprintf(EL_STATUS, "load_state @ %x: " error, g_read_offs); \\r
366 return 1; \\r
367}\r
368\r
369// when is eof really set?\r
370#define CHECKED_READ(len,data) { \\r
371 if (areaRead(data, 1, len, file) != len) { \\r
372 if (len == 1 && areaEof(file)) goto readend; \\r
373 R_ERROR_RETURN("areaRead: premature EOF\n"); \\r
374 return 1; \\r
375 } \\r
376 g_read_offs += len; \\r
377}\r
378\r
379#define CHECKED_READ2(len2,data) { \\r
380 if (len2 != len) { \\r
381 elprintf(EL_STATUS, "unexpected len %i, wanted %i (%s)", len, len2, #len2); \\r
382 if (len > len2) R_ERROR_RETURN("failed."); \\r
383 /* else read anyway and hope for the best.. */ \\r
384 } \\r
385 CHECKED_READ(len, data); \\r
386}\r
387\r
388#define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff);\r
389\r
390static int state_load(void *file)\r
391{\r
392 unsigned char buff_m68k[0x60], buff_s68k[0x60];\r
393 unsigned char buff_z80[Z80_STATE_SIZE];\r
394 unsigned char buff_sh2[SH2_STATE_SIZE];\r
6a98f03e 395 unsigned char buff[0x40];\r
b4db550e 396 unsigned char chunk;\r
397 void *ym2612_regs;\r
398 char header[8];\r
399 int ver, len;\r
400\r
03065bb6 401 memset(buff_m68k, 0, sizeof(buff_m68k));\r
402 memset(buff_s68k, 0, sizeof(buff_s68k));\r
403 memset(buff_z80, 0, sizeof(buff_z80));\r
404\r
b4db550e 405 g_read_offs = 0;\r
406 CHECKED_READ(8, header);\r
407 if (strncmp(header, "PicoSMCD", 8) && strncmp(header, "PicoSEXT", 8))\r
408 R_ERROR_RETURN("bad header");\r
409 CHECKED_READ(4, &ver);\r
410\r
ae214f1c 411 memset(pcd_event_times, 0, sizeof(pcd_event_times));\r
412 memset(p32x_event_times, 0, sizeof(p32x_event_times));\r
413\r
b4db550e 414 while (!areaEof(file))\r
415 {\r
416 CHECKED_READ(1, &chunk);\r
417 CHECKED_READ(4, &len);\r
418 if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");\r
419 if (CHUNK_S68K <= chunk && chunk <= CHUNK_MISC_CD && !(PicoAHW & PAHW_MCD))\r
420 R_ERROR_RETURN("cd chunk in non CD state?");\r
27e26273 421 if (CHUNK_32X_FIRST <= chunk && chunk <= CHUNK_32X_LAST && !(PicoAHW & PAHW_32X))\r
422 Pico32xStartup();\r
b4db550e 423\r
424 switch (chunk)\r
425 {\r
426 case CHUNK_M68K:\r
427 CHECKED_READ_BUFF(buff_m68k);\r
428 break;\r
429\r
430 case CHUNK_Z80:\r
431 CHECKED_READ_BUFF(buff_z80);\r
b4db550e 432 break;\r
433\r
434 case CHUNK_RAM: CHECKED_READ_BUFF(Pico.ram); break;\r
435 case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); break;\r
436 case CHUNK_ZRAM: CHECKED_READ_BUFF(Pico.zram); break;\r
437 case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); break;\r
438 case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); break;\r
439 case CHUNK_MISC: CHECKED_READ_BUFF(Pico.m); break;\r
440 case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); break;\r
441 case CHUNK_IOPORTS: CHECKED_READ_BUFF(Pico.ioports); break;\r
442 case CHUNK_PSG: CHECKED_READ2(28*4, sn76496_regs); break;\r
443 case CHUNK_FM:\r
444 ym2612_regs = YM2612GetRegs();\r
445 CHECKED_READ2(0x200+4, ym2612_regs);\r
446 ym2612_unpack_state();\r
447 break;\r
448\r
449 case CHUNK_SMS:\r
450 CHECKED_READ_BUFF(Pico.ms);\r
451 break;\r
452\r
453 // cd stuff\r
454 case CHUNK_S68K:\r
455 CHECKED_READ_BUFF(buff_s68k);\r
456 break;\r
457\r
458 case CHUNK_PRG_RAM: CHECKED_READ_BUFF(Pico_mcd->prg_ram); break;\r
459 case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_ram2M); break;\r
460 case CHUNK_PCM_RAM: CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break;\r
461 case CHUNK_BRAM: CHECKED_READ_BUFF(Pico_mcd->bram); break;\r
462 case CHUNK_GA_REGS: CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break;\r
463 case CHUNK_PCM: CHECKED_READ_BUFF(Pico_mcd->pcm); break;\r
464 case CHUNK_CDD: CHECKED_READ_BUFF(Pico_mcd->cdd); break;\r
465 case CHUNK_CDC: CHECKED_READ_BUFF(Pico_mcd->cdc); break;\r
466 case CHUNK_SCD: CHECKED_READ_BUFF(Pico_mcd->scd); break;\r
467 case CHUNK_RC: CHECKED_READ_BUFF(Pico_mcd->rot_comp); break;\r
468 case CHUNK_MISC_CD: CHECKED_READ_BUFF(Pico_mcd->m); break;\r
469\r
ae214f1c 470 case CHUNK_CD_EVT:\r
471 CHECKED_READ_BUFF(buff);\r
472 memcpy(pcd_event_times, buff, sizeof(pcd_event_times));\r
473 break;\r
474\r
b4db550e 475 // 32x stuff\r
f3a57b2d 476#ifndef NO_32X\r
b4db550e 477 case CHUNK_MSH2:\r
478 CHECKED_READ_BUFF(buff_sh2);\r
479 sh2_unpack(&sh2s[0], buff_sh2);\r
480 break;\r
481\r
482 case CHUNK_SSH2:\r
483 CHECKED_READ_BUFF(buff_sh2);\r
484 sh2_unpack(&sh2s[1], buff_sh2);\r
485 break;\r
486\r
f81107f5 487 case CHUNK_MSH2_DATA: CHECKED_READ_BUFF(sh2s[0].data_array); break;\r
488 case CHUNK_MSH2_PERI: CHECKED_READ_BUFF(sh2s[0].peri_regs); break;\r
489 case CHUNK_SSH2_DATA: CHECKED_READ_BUFF(sh2s[1].data_array); break;\r
490 case CHUNK_SSH2_PERI: CHECKED_READ_BUFF(sh2s[1].peri_regs); break;\r
b4db550e 491 case CHUNK_32XSYS: CHECKED_READ_BUFF(Pico32x); break;\r
492 case CHUNK_M68K_BIOS: CHECKED_READ_BUFF(Pico32xMem->m68k_rom); break;\r
493 case CHUNK_MSH2_BIOS: CHECKED_READ_BUFF(Pico32xMem->sh2_rom_m); break;\r
494 case CHUNK_SSH2_BIOS: CHECKED_READ_BUFF(Pico32xMem->sh2_rom_s); break;\r
495 case CHUNK_SDRAM: CHECKED_READ_BUFF(Pico32xMem->sdram); break;\r
496 case CHUNK_DRAM: CHECKED_READ_BUFF(Pico32xMem->dram); break;\r
497 case CHUNK_32XPAL: CHECKED_READ_BUFF(Pico32xMem->pal); break;\r
6a98f03e 498\r
499 case CHUNK_32X_EVT:\r
500 CHECKED_READ_BUFF(buff);\r
ae214f1c 501 memcpy(p32x_event_times, buff, sizeof(p32x_event_times));\r
6a98f03e 502 break;\r
f3a57b2d 503#endif\r
b4db550e 504 default:\r
505 if (carthw_chunks != NULL)\r
506 {\r
507 carthw_state_chunk *chwc;\r
508 for (chwc = carthw_chunks; chwc->ptr != NULL; chwc++) {\r
509 if (chwc->chunk == chunk) {\r
510 CHECKED_READ2(chwc->size, chwc->ptr);\r
511 goto breakswitch;\r
512 }\r
513 }\r
514 }\r
515 elprintf(EL_STATUS, "load_state: skipping unknown chunk %i of size %i", chunk, len);\r
516 areaSeek(file, len, SEEK_CUR);\r
517 break;\r
518 }\r
519breakswitch:;\r
520 }\r
521\r
522readend:\r
523 if (PicoAHW & PAHW_SMS)\r
524 PicoStateLoadedMS();\r
525\r
27e26273 526 if (PicoAHW & PAHW_32X)\r
527 Pico32xStateLoaded(1);\r
528\r
03065bb6 529 // must unpack 68k and z80 after banks are set up\r
b4db550e 530 if (!(PicoAHW & PAHW_SMS))\r
531 SekUnpackCpu(buff_m68k, 0);\r
27e26273 532 if (PicoAHW & PAHW_MCD)\r
533 SekUnpackCpu(buff_s68k, 1);\r
b4db550e 534\r
03065bb6 535 z80_unpack(buff_z80);\r
536\r
27e26273 537 // due to dep from 68k cycles..\r
ae214f1c 538 SekCycleAim = SekCycleCnt;\r
b4db550e 539 if (PicoAHW & PAHW_32X)\r
27e26273 540 Pico32xStateLoaded(0);\r
ae214f1c 541 if (PicoAHW & PAHW_MCD)\r
542 {\r
543 SekCycleAimS68k = SekCycleCntS68k;\r
544 pcd_state_loaded();\r
545\r
546 if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))\r
547 cdda_start_play();\r
548 }\r
b4db550e 549\r
550 return 0;\r
551}\r
552\r
553static int state_load_gfx(void *file)\r
554{\r
555 int ver, len, found = 0, to_find = 4;\r
556 char buff[8];\r
557\r
558 if (PicoAHW & PAHW_32X)\r
559 to_find += 2;\r
560\r
561 g_read_offs = 0;\r
562 CHECKED_READ(8, buff);\r
563 if (strncmp((char *)buff, "PicoSMCD", 8) && strncmp((char *)buff, "PicoSEXT", 8))\r
564 R_ERROR_RETURN("bad header");\r
565 CHECKED_READ(4, &ver);\r
566\r
567 while (!areaEof(file) && found < to_find)\r
568 {\r
569 CHECKED_READ(1, buff);\r
570 CHECKED_READ(4, &len);\r
571 if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");\r
572 if (buff[0] > CHUNK_FM && buff[0] <= CHUNK_MISC_CD && !(PicoAHW & PAHW_MCD))\r
573 R_ERROR_RETURN("cd chunk in non CD state?");\r
574\r
575 switch (buff[0])\r
576 {\r
577 case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); found++; break;\r
578 case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); found++; break;\r
579 case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); found++; break;\r
580 case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); found++; break;\r
581\r
f3a57b2d 582#ifndef NO_32X\r
b4db550e 583 case CHUNK_DRAM:\r
584 if (Pico32xMem != NULL)\r
585 CHECKED_READ_BUFF(Pico32xMem->dram);\r
586 break;\r
587\r
588 case CHUNK_32XPAL:\r
589 if (Pico32xMem != NULL)\r
590 CHECKED_READ_BUFF(Pico32xMem->pal);\r
591 Pico32x.dirty_pal = 1;\r
592 break;\r
593\r
594 case CHUNK_32XSYS:\r
595 CHECKED_READ_BUFF(Pico32x);\r
596 break;\r
f3a57b2d 597#endif\r
b4db550e 598 default:\r
599 areaSeek(file, len, SEEK_CUR);\r
600 break;\r
601 }\r
602 }\r
603\r
604readend:\r
605 return 0;\r
606}\r
607\r
86b38dc4 608static int pico_state_internal(void *afile, int is_save)\r
b4db550e 609{\r
b4db550e 610 int ret;\r
611\r
b4db550e 612 if (is_save)\r
613 ret = state_save(afile);\r
614 else {\r
615 ret = state_load(afile);\r
616 if (ret != 0) {\r
617 areaSeek(afile, 0, SEEK_SET);\r
618 ret = state_load_legacy(afile);\r
619 }\r
620\r
621 if (PicoLoadStateHook != NULL)\r
622 PicoLoadStateHook();\r
623 Pico.m.dirtyPal = 1;\r
624 }\r
625\r
86b38dc4 626 return ret;\r
627}\r
628\r
629int PicoState(const char *fname, int is_save)\r
630{\r
631 void *afile = NULL;\r
632 int ret;\r
633\r
634 afile = open_save_file(fname, is_save);\r
635 if (afile == NULL)\r
636 return -1;\r
637\r
638 ret = pico_state_internal(afile, is_save);\r
b4db550e 639 areaClose(afile);\r
640 return ret;\r
641}\r
642\r
86b38dc4 643int PicoStateFP(void *afile, int is_save,\r
644 arearw *read, arearw *write, areaeof *eof, areaseek *seek)\r
645{\r
646 areaRead = read;\r
647 areaWrite = write;\r
648 areaEof = eof;\r
649 areaSeek = seek;\r
650 areaClose = NULL;\r
651\r
652 return pico_state_internal(afile, is_save);\r
653}\r
654\r
b4db550e 655int PicoStateLoadGfx(const char *fname)\r
656{\r
657 void *afile;\r
658 int ret;\r
659\r
660 afile = open_save_file(fname, 0);\r
661 if (afile == NULL)\r
662 return -1;\r
663\r
664 ret = state_load_gfx(afile);\r
665 if (ret != 0) {\r
666 // assume legacy\r
667 areaSeek(afile, 0x10020, SEEK_SET); // skip header and RAM\r
668 areaRead(Pico.vram, 1, sizeof(Pico.vram), afile);\r
669 areaSeek(afile, 0x2000, SEEK_CUR);\r
670 areaRead(Pico.cram, 1, sizeof(Pico.cram), afile);\r
671 areaRead(Pico.vsram, 1, sizeof(Pico.vsram), afile);\r
672 areaSeek(afile, 0x221a0, SEEK_SET);\r
673 areaRead(&Pico.video, 1, sizeof(Pico.video), afile);\r
674 }\r
675 areaClose(afile);\r
676 return 0;\r
677}\r
678\r
679// tmp state\r
680struct PicoTmp\r
681{\r
682 unsigned short vram[0x8000];\r
683 unsigned short cram[0x40];\r
684 unsigned short vsram[0x40];\r
685\r
686 //struct PicoMisc m;\r
687 struct PicoVideo video;\r
688\r
689 struct {\r
690 struct Pico32x p32x;\r
691 unsigned short dram[2][0x20000/2];\r
692 unsigned short pal[0x100];\r
693 } t32x;\r
694};\r
695\r
696// returns data ptr to free() or PicoTmpStateRestore()\r
697void *PicoTmpStateSave(void)\r
698{\r
699 // gfx only for now\r
700 struct PicoTmp *t = malloc(sizeof(*t));\r
701 if (t == NULL)\r
702 return NULL;\r
703\r
704 memcpy(t->vram, Pico.vram, sizeof(Pico.vram));\r
705 memcpy(t->cram, Pico.cram, sizeof(Pico.cram));\r
706 memcpy(t->vsram, Pico.vsram, sizeof(Pico.vsram));\r
707 memcpy(&t->video, &Pico.video, sizeof(Pico.video));\r
708\r
f3a57b2d 709#ifndef NO_32X\r
b4db550e 710 if (PicoAHW & PAHW_32X) {\r
711 memcpy(&t->t32x.p32x, &Pico32x, sizeof(Pico32x));\r
712 memcpy(t->t32x.dram, Pico32xMem->dram, sizeof(Pico32xMem->dram));\r
713 memcpy(t->t32x.pal, Pico32xMem->pal, sizeof(Pico32xMem->pal));\r
714 }\r
f3a57b2d 715#endif\r
b4db550e 716\r
717 return t;\r
718}\r
719\r
720void PicoTmpStateRestore(void *data)\r
721{\r
722 struct PicoTmp *t = data;\r
723 if (t == NULL)\r
724 return;\r
725\r
726 memcpy(Pico.vram, t->vram, sizeof(Pico.vram));\r
727 memcpy(Pico.cram, t->cram, sizeof(Pico.cram));\r
728 memcpy(Pico.vsram, t->vsram, sizeof(Pico.vsram));\r
729 memcpy(&Pico.video, &t->video, sizeof(Pico.video));\r
730 Pico.m.dirtyPal = 1;\r
731\r
f3a57b2d 732#ifndef NO_32X\r
b4db550e 733 if (PicoAHW & PAHW_32X) {\r
734 memcpy(&Pico32x, &t->t32x.p32x, sizeof(Pico32x));\r
735 memcpy(Pico32xMem->dram, t->t32x.dram, sizeof(Pico32xMem->dram));\r
736 memcpy(Pico32xMem->pal, t->t32x.pal, sizeof(Pico32xMem->pal));\r
737 Pico32x.dirty_pal = 1;\r
738 }\r
f3a57b2d 739#endif\r
b4db550e 740}\r
741\r
ed4402a7 742// vim:shiftwidth=2:ts=2:expandtab\r
fast MegaDrive/MegaCD/32X emulator