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[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
b4db550e 176 //\r
177 CHUNK_DEFAULT_COUNT,\r
178 CHUNK_CARTHW_ = CHUNK_CARTHW, // defined in PicoInt\r
179} chunk_name_e;\r
180\r
181static const char * const chunk_names[] = {\r
182 "INVALID!",\r
183 "M68K state",\r
184 "RAM",\r
185 "VRAM",\r
186 "ZRAM",\r
187 "CRAM", // 5\r
188 "VSRAM",\r
189 "emu state",\r
190 "VIDEO",\r
191 "Z80 state",\r
192 "PSG", // 10\r
193 "FM",\r
194 // CD stuff\r
195 "S68K state",\r
196 "PRG_RAM",\r
197 "WORD_RAM",\r
198 "PCM_RAM", // 15\r
199 "BRAM",\r
200 "GATE ARRAY regs",\r
201 "PCM state",\r
202 "CDC",\r
203 "CDD", // 20\r
204 "SCD",\r
205 "GFX chip",\r
206 "MCD state",\r
207 //\r
208 "IO",\r
209 "SMS state", // 25\r
210 // 32x\r
211 "MSH2",\r
212 "MSH2 data",\r
213 "MSH2 peri",\r
214 "SSH2",\r
215 "SSH2 data", // 30\r
216 "SSH2 peri",\r
217 "32X system regs",\r
218 "M68K BIOS",\r
219 "MSH2 BIOS",\r
220 "SSH2 BIOS", // 35\r
221 "SDRAM",\r
222 "DRAM",\r
223 "PAL",\r
6a98f03e 224 "events",\r
b4db550e 225};\r
226\r
227static int write_chunk(chunk_name_e name, int len, void *data, void *file)\r
228{\r
229 size_t bwritten = 0;\r
230 bwritten += areaWrite(&name, 1, 1, file);\r
231 bwritten += areaWrite(&len, 1, 4, file);\r
232 bwritten += areaWrite(data, 1, len, file);\r
233\r
234 return (bwritten == len + 4 + 1);\r
235}\r
236\r
237#define CHECKED_WRITE(name,len,data) { \\r
238 if (PicoStateProgressCB && name < CHUNK_DEFAULT_COUNT) { \\r
239 strncpy(sbuff + 9, chunk_names[name], sizeof(sbuff) - 9); \\r
240 PicoStateProgressCB(sbuff); \\r
241 } \\r
242 if (!write_chunk(name, len, data, file)) return 1; \\r
243}\r
244\r
245#define CHECKED_WRITE_BUFF(name,buff) { \\r
246 if (PicoStateProgressCB && name < CHUNK_DEFAULT_COUNT) { \\r
247 strncpy(sbuff + 9, chunk_names[name], sizeof(sbuff) - 9); \\r
248 PicoStateProgressCB(sbuff); \\r
249 } \\r
250 if (!write_chunk(name, sizeof(buff), &buff, file)) return 1; \\r
251}\r
252\r
253static int state_save(void *file)\r
254{\r
255 char sbuff[32] = "Saving.. ";\r
256 unsigned char buff[0x60], buff_z80[Z80_STATE_SIZE];\r
257 void *ym2612_regs = YM2612GetRegs();\r
258 int ver = 0x0170; // not really used..\r
259\r
260 areaWrite("PicoSEXT", 1, 8, file);\r
261 areaWrite(&ver, 1, 4, file);\r
262\r
263 if (!(PicoAHW & PAHW_SMS)) {\r
264 memset(buff, 0, sizeof(buff));\r
265 SekPackCpu(buff, 0);\r
266 CHECKED_WRITE_BUFF(CHUNK_M68K, buff);\r
267 CHECKED_WRITE_BUFF(CHUNK_RAM, Pico.ram);\r
268 CHECKED_WRITE_BUFF(CHUNK_VSRAM, Pico.vsram);\r
269 CHECKED_WRITE_BUFF(CHUNK_IOPORTS, Pico.ioports);\r
270 ym2612_pack_state();\r
271 CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs);\r
272 }\r
273 else {\r
274 CHECKED_WRITE_BUFF(CHUNK_SMS, Pico.ms);\r
275 }\r
276\r
277 CHECKED_WRITE_BUFF(CHUNK_VRAM, Pico.vram);\r
278 CHECKED_WRITE_BUFF(CHUNK_ZRAM, Pico.zram);\r
279 CHECKED_WRITE_BUFF(CHUNK_CRAM, Pico.cram);\r
280 CHECKED_WRITE_BUFF(CHUNK_MISC, Pico.m);\r
281 CHECKED_WRITE_BUFF(CHUNK_VIDEO, Pico.video);\r
282\r
283 z80_pack(buff_z80);\r
284 CHECKED_WRITE_BUFF(CHUNK_Z80, buff_z80);\r
285 CHECKED_WRITE(CHUNK_PSG, 28*4, sn76496_regs);\r
286\r
287 if (PicoAHW & PAHW_MCD)\r
288 {\r
289 memset(buff, 0, sizeof(buff));\r
290 SekPackCpu(buff, 1);\r
291 if (Pico_mcd->s68k_regs[3] & 4) // 1M mode?\r
292 wram_1M_to_2M(Pico_mcd->word_ram2M);\r
895d1512 293 memcpy(&Pico_mcd->m.hint_vector, Pico_mcd->bios + 0x72,\r
294 sizeof(Pico_mcd->m.hint_vector));\r
b4db550e 295\r
296 CHECKED_WRITE_BUFF(CHUNK_S68K, buff);\r
297 CHECKED_WRITE_BUFF(CHUNK_PRG_RAM, Pico_mcd->prg_ram);\r
298 CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram2M); // in 2M format\r
299 CHECKED_WRITE_BUFF(CHUNK_PCM_RAM, Pico_mcd->pcm_ram);\r
300 CHECKED_WRITE_BUFF(CHUNK_BRAM, Pico_mcd->bram);\r
301 CHECKED_WRITE_BUFF(CHUNK_GA_REGS, Pico_mcd->s68k_regs); // GA regs, not CPU regs\r
302 CHECKED_WRITE_BUFF(CHUNK_PCM, Pico_mcd->pcm);\r
303 CHECKED_WRITE_BUFF(CHUNK_CDD, Pico_mcd->cdd);\r
304 CHECKED_WRITE_BUFF(CHUNK_CDC, Pico_mcd->cdc);\r
305 CHECKED_WRITE_BUFF(CHUNK_SCD, Pico_mcd->scd);\r
306 CHECKED_WRITE_BUFF(CHUNK_RC, Pico_mcd->rot_comp);\r
307 CHECKED_WRITE_BUFF(CHUNK_MISC_CD, Pico_mcd->m);\r
308\r
309 if (Pico_mcd->s68k_regs[3] & 4) // convert back\r
310 wram_2M_to_1M(Pico_mcd->word_ram2M);\r
311 }\r
312\r
f3a57b2d 313#ifndef NO_32X\r
b4db550e 314 if (PicoAHW & PAHW_32X)\r
315 {\r
316 unsigned char cpubuff[SH2_STATE_SIZE];\r
317\r
318 memset(cpubuff, 0, sizeof(cpubuff));\r
319\r
320 sh2_pack(&sh2s[0], cpubuff);\r
321 CHECKED_WRITE_BUFF(CHUNK_MSH2, cpubuff);\r
f81107f5 322 CHECKED_WRITE_BUFF(CHUNK_MSH2_DATA, sh2s[0].data_array);\r
323 CHECKED_WRITE_BUFF(CHUNK_MSH2_PERI, sh2s[0].peri_regs);\r
b4db550e 324\r
325 sh2_pack(&sh2s[1], cpubuff);\r
326 CHECKED_WRITE_BUFF(CHUNK_SSH2, cpubuff);\r
f81107f5 327 CHECKED_WRITE_BUFF(CHUNK_SSH2_DATA, sh2s[1].data_array);\r
328 CHECKED_WRITE_BUFF(CHUNK_SSH2_PERI, sh2s[1].peri_regs);\r
b4db550e 329\r
330 CHECKED_WRITE_BUFF(CHUNK_32XSYS, Pico32x);\r
331 CHECKED_WRITE_BUFF(CHUNK_M68K_BIOS, Pico32xMem->m68k_rom);\r
332 CHECKED_WRITE_BUFF(CHUNK_MSH2_BIOS, Pico32xMem->sh2_rom_m);\r
333 CHECKED_WRITE_BUFF(CHUNK_SSH2_BIOS, Pico32xMem->sh2_rom_s);\r
334 CHECKED_WRITE_BUFF(CHUNK_SDRAM, Pico32xMem->sdram);\r
335 CHECKED_WRITE_BUFF(CHUNK_DRAM, Pico32xMem->dram);\r
336 CHECKED_WRITE_BUFF(CHUNK_32XPAL, Pico32xMem->pal);\r
ed4402a7 337\r
6a98f03e 338 memset(buff, 0, 0x40);\r
339 memcpy(buff, event_times, sizeof(event_times));\r
340 CHECKED_WRITE(CHUNK_32X_EVT, 0x40, buff);\r
b4db550e 341 }\r
f3a57b2d 342#endif\r
b4db550e 343\r
344 if (carthw_chunks != NULL)\r
345 {\r
346 carthw_state_chunk *chwc;\r
347 if (PicoStateProgressCB)\r
348 PicoStateProgressCB("Saving.. cart hw state");\r
349 for (chwc = carthw_chunks; chwc->ptr != NULL; chwc++)\r
350 CHECKED_WRITE(chwc->chunk, chwc->size, chwc->ptr);\r
351 }\r
352\r
353 return 0;\r
354}\r
355\r
356static int g_read_offs = 0;\r
357\r
358#define R_ERROR_RETURN(error) \\r
359{ \\r
360 elprintf(EL_STATUS, "load_state @ %x: " error, g_read_offs); \\r
361 return 1; \\r
362}\r
363\r
364// when is eof really set?\r
365#define CHECKED_READ(len,data) { \\r
366 if (areaRead(data, 1, len, file) != len) { \\r
367 if (len == 1 && areaEof(file)) goto readend; \\r
368 R_ERROR_RETURN("areaRead: premature EOF\n"); \\r
369 return 1; \\r
370 } \\r
371 g_read_offs += len; \\r
372}\r
373\r
374#define CHECKED_READ2(len2,data) { \\r
375 if (len2 != len) { \\r
376 elprintf(EL_STATUS, "unexpected len %i, wanted %i (%s)", len, len2, #len2); \\r
377 if (len > len2) R_ERROR_RETURN("failed."); \\r
378 /* else read anyway and hope for the best.. */ \\r
379 } \\r
380 CHECKED_READ(len, data); \\r
381}\r
382\r
383#define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff);\r
384\r
385static int state_load(void *file)\r
386{\r
387 unsigned char buff_m68k[0x60], buff_s68k[0x60];\r
388 unsigned char buff_z80[Z80_STATE_SIZE];\r
389 unsigned char buff_sh2[SH2_STATE_SIZE];\r
6a98f03e 390 unsigned char buff[0x40];\r
b4db550e 391 unsigned char chunk;\r
392 void *ym2612_regs;\r
393 char header[8];\r
394 int ver, len;\r
395\r
03065bb6 396 memset(buff_m68k, 0, sizeof(buff_m68k));\r
397 memset(buff_s68k, 0, sizeof(buff_s68k));\r
398 memset(buff_z80, 0, sizeof(buff_z80));\r
399\r
b4db550e 400 g_read_offs = 0;\r
401 CHECKED_READ(8, header);\r
402 if (strncmp(header, "PicoSMCD", 8) && strncmp(header, "PicoSEXT", 8))\r
403 R_ERROR_RETURN("bad header");\r
404 CHECKED_READ(4, &ver);\r
405\r
406 while (!areaEof(file))\r
407 {\r
408 CHECKED_READ(1, &chunk);\r
409 CHECKED_READ(4, &len);\r
410 if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");\r
411 if (CHUNK_S68K <= chunk && chunk <= CHUNK_MISC_CD && !(PicoAHW & PAHW_MCD))\r
412 R_ERROR_RETURN("cd chunk in non CD state?");\r
27e26273 413 if (CHUNK_32X_FIRST <= chunk && chunk <= CHUNK_32X_LAST && !(PicoAHW & PAHW_32X))\r
414 Pico32xStartup();\r
b4db550e 415\r
416 switch (chunk)\r
417 {\r
418 case CHUNK_M68K:\r
419 CHECKED_READ_BUFF(buff_m68k);\r
420 break;\r
421\r
422 case CHUNK_Z80:\r
423 CHECKED_READ_BUFF(buff_z80);\r
b4db550e 424 break;\r
425\r
426 case CHUNK_RAM: CHECKED_READ_BUFF(Pico.ram); break;\r
427 case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); break;\r
428 case CHUNK_ZRAM: CHECKED_READ_BUFF(Pico.zram); break;\r
429 case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); break;\r
430 case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); break;\r
431 case CHUNK_MISC: CHECKED_READ_BUFF(Pico.m); break;\r
432 case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); break;\r
433 case CHUNK_IOPORTS: CHECKED_READ_BUFF(Pico.ioports); break;\r
434 case CHUNK_PSG: CHECKED_READ2(28*4, sn76496_regs); break;\r
435 case CHUNK_FM:\r
436 ym2612_regs = YM2612GetRegs();\r
437 CHECKED_READ2(0x200+4, ym2612_regs);\r
438 ym2612_unpack_state();\r
439 break;\r
440\r
441 case CHUNK_SMS:\r
442 CHECKED_READ_BUFF(Pico.ms);\r
443 break;\r
444\r
445 // cd stuff\r
446 case CHUNK_S68K:\r
447 CHECKED_READ_BUFF(buff_s68k);\r
448 break;\r
449\r
450 case CHUNK_PRG_RAM: CHECKED_READ_BUFF(Pico_mcd->prg_ram); break;\r
451 case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_ram2M); break;\r
452 case CHUNK_PCM_RAM: CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break;\r
453 case CHUNK_BRAM: CHECKED_READ_BUFF(Pico_mcd->bram); break;\r
454 case CHUNK_GA_REGS: CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break;\r
455 case CHUNK_PCM: CHECKED_READ_BUFF(Pico_mcd->pcm); break;\r
456 case CHUNK_CDD: CHECKED_READ_BUFF(Pico_mcd->cdd); break;\r
457 case CHUNK_CDC: CHECKED_READ_BUFF(Pico_mcd->cdc); break;\r
458 case CHUNK_SCD: CHECKED_READ_BUFF(Pico_mcd->scd); break;\r
459 case CHUNK_RC: CHECKED_READ_BUFF(Pico_mcd->rot_comp); break;\r
460 case CHUNK_MISC_CD: CHECKED_READ_BUFF(Pico_mcd->m); break;\r
461\r
462 // 32x stuff\r
f3a57b2d 463#ifndef NO_32X\r
b4db550e 464 case CHUNK_MSH2:\r
465 CHECKED_READ_BUFF(buff_sh2);\r
466 sh2_unpack(&sh2s[0], buff_sh2);\r
467 break;\r
468\r
469 case CHUNK_SSH2:\r
470 CHECKED_READ_BUFF(buff_sh2);\r
471 sh2_unpack(&sh2s[1], buff_sh2);\r
472 break;\r
473\r
f81107f5 474 case CHUNK_MSH2_DATA: CHECKED_READ_BUFF(sh2s[0].data_array); break;\r
475 case CHUNK_MSH2_PERI: CHECKED_READ_BUFF(sh2s[0].peri_regs); break;\r
476 case CHUNK_SSH2_DATA: CHECKED_READ_BUFF(sh2s[1].data_array); break;\r
477 case CHUNK_SSH2_PERI: CHECKED_READ_BUFF(sh2s[1].peri_regs); break;\r
b4db550e 478 case CHUNK_32XSYS: CHECKED_READ_BUFF(Pico32x); break;\r
479 case CHUNK_M68K_BIOS: CHECKED_READ_BUFF(Pico32xMem->m68k_rom); break;\r
480 case CHUNK_MSH2_BIOS: CHECKED_READ_BUFF(Pico32xMem->sh2_rom_m); break;\r
481 case CHUNK_SSH2_BIOS: CHECKED_READ_BUFF(Pico32xMem->sh2_rom_s); break;\r
482 case CHUNK_SDRAM: CHECKED_READ_BUFF(Pico32xMem->sdram); break;\r
483 case CHUNK_DRAM: CHECKED_READ_BUFF(Pico32xMem->dram); break;\r
484 case CHUNK_32XPAL: CHECKED_READ_BUFF(Pico32xMem->pal); break;\r
6a98f03e 485\r
486 case CHUNK_32X_EVT:\r
487 CHECKED_READ_BUFF(buff);\r
488 memcpy(event_times, buff, sizeof(event_times));\r
489 break;\r
f3a57b2d 490#endif\r
b4db550e 491 default:\r
492 if (carthw_chunks != NULL)\r
493 {\r
494 carthw_state_chunk *chwc;\r
495 for (chwc = carthw_chunks; chwc->ptr != NULL; chwc++) {\r
496 if (chwc->chunk == chunk) {\r
497 CHECKED_READ2(chwc->size, chwc->ptr);\r
498 goto breakswitch;\r
499 }\r
500 }\r
501 }\r
502 elprintf(EL_STATUS, "load_state: skipping unknown chunk %i of size %i", chunk, len);\r
503 areaSeek(file, len, SEEK_CUR);\r
504 break;\r
505 }\r
506breakswitch:;\r
507 }\r
508\r
509readend:\r
510 if (PicoAHW & PAHW_SMS)\r
511 PicoStateLoadedMS();\r
512\r
513 if (PicoAHW & PAHW_MCD)\r
514 {\r
515 PicoMemStateLoaded();\r
516\r
517 if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))\r
518 cdda_start_play();\r
b4db550e 519 }\r
520\r
27e26273 521 if (PicoAHW & PAHW_32X)\r
522 Pico32xStateLoaded(1);\r
523\r
03065bb6 524 // must unpack 68k and z80 after banks are set up\r
b4db550e 525 if (!(PicoAHW & PAHW_SMS))\r
526 SekUnpackCpu(buff_m68k, 0);\r
27e26273 527 if (PicoAHW & PAHW_MCD)\r
528 SekUnpackCpu(buff_s68k, 1);\r
b4db550e 529\r
03065bb6 530 z80_unpack(buff_z80);\r
531\r
27e26273 532 // due to dep from 68k cycles..\r
b4db550e 533 if (PicoAHW & PAHW_32X)\r
27e26273 534 Pico32xStateLoaded(0);\r
b4db550e 535\r
536 return 0;\r
537}\r
538\r
539static int state_load_gfx(void *file)\r
540{\r
541 int ver, len, found = 0, to_find = 4;\r
542 char buff[8];\r
543\r
544 if (PicoAHW & PAHW_32X)\r
545 to_find += 2;\r
546\r
547 g_read_offs = 0;\r
548 CHECKED_READ(8, buff);\r
549 if (strncmp((char *)buff, "PicoSMCD", 8) && strncmp((char *)buff, "PicoSEXT", 8))\r
550 R_ERROR_RETURN("bad header");\r
551 CHECKED_READ(4, &ver);\r
552\r
553 while (!areaEof(file) && found < to_find)\r
554 {\r
555 CHECKED_READ(1, buff);\r
556 CHECKED_READ(4, &len);\r
557 if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");\r
558 if (buff[0] > CHUNK_FM && buff[0] <= CHUNK_MISC_CD && !(PicoAHW & PAHW_MCD))\r
559 R_ERROR_RETURN("cd chunk in non CD state?");\r
560\r
561 switch (buff[0])\r
562 {\r
563 case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); found++; break;\r
564 case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); found++; break;\r
565 case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); found++; break;\r
566 case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); found++; break;\r
567\r
f3a57b2d 568#ifndef NO_32X\r
b4db550e 569 case CHUNK_DRAM:\r
570 if (Pico32xMem != NULL)\r
571 CHECKED_READ_BUFF(Pico32xMem->dram);\r
572 break;\r
573\r
574 case CHUNK_32XPAL:\r
575 if (Pico32xMem != NULL)\r
576 CHECKED_READ_BUFF(Pico32xMem->pal);\r
577 Pico32x.dirty_pal = 1;\r
578 break;\r
579\r
580 case CHUNK_32XSYS:\r
581 CHECKED_READ_BUFF(Pico32x);\r
582 break;\r
f3a57b2d 583#endif\r
b4db550e 584 default:\r
585 areaSeek(file, len, SEEK_CUR);\r
586 break;\r
587 }\r
588 }\r
589\r
590readend:\r
591 return 0;\r
592}\r
593\r
86b38dc4 594static int pico_state_internal(void *afile, int is_save)\r
b4db550e 595{\r
b4db550e 596 int ret;\r
597\r
b4db550e 598 if (is_save)\r
599 ret = state_save(afile);\r
600 else {\r
601 ret = state_load(afile);\r
602 if (ret != 0) {\r
603 areaSeek(afile, 0, SEEK_SET);\r
604 ret = state_load_legacy(afile);\r
605 }\r
606\r
607 if (PicoLoadStateHook != NULL)\r
608 PicoLoadStateHook();\r
609 Pico.m.dirtyPal = 1;\r
610 }\r
611\r
86b38dc4 612 return ret;\r
613}\r
614\r
615int PicoState(const char *fname, int is_save)\r
616{\r
617 void *afile = NULL;\r
618 int ret;\r
619\r
620 afile = open_save_file(fname, is_save);\r
621 if (afile == NULL)\r
622 return -1;\r
623\r
624 ret = pico_state_internal(afile, is_save);\r
b4db550e 625 areaClose(afile);\r
626 return ret;\r
627}\r
628\r
86b38dc4 629int PicoStateFP(void *afile, int is_save,\r
630 arearw *read, arearw *write, areaeof *eof, areaseek *seek)\r
631{\r
632 areaRead = read;\r
633 areaWrite = write;\r
634 areaEof = eof;\r
635 areaSeek = seek;\r
636 areaClose = NULL;\r
637\r
638 return pico_state_internal(afile, is_save);\r
639}\r
640\r
b4db550e 641int PicoStateLoadGfx(const char *fname)\r
642{\r
643 void *afile;\r
644 int ret;\r
645\r
646 afile = open_save_file(fname, 0);\r
647 if (afile == NULL)\r
648 return -1;\r
649\r
650 ret = state_load_gfx(afile);\r
651 if (ret != 0) {\r
652 // assume legacy\r
653 areaSeek(afile, 0x10020, SEEK_SET); // skip header and RAM\r
654 areaRead(Pico.vram, 1, sizeof(Pico.vram), afile);\r
655 areaSeek(afile, 0x2000, SEEK_CUR);\r
656 areaRead(Pico.cram, 1, sizeof(Pico.cram), afile);\r
657 areaRead(Pico.vsram, 1, sizeof(Pico.vsram), afile);\r
658 areaSeek(afile, 0x221a0, SEEK_SET);\r
659 areaRead(&Pico.video, 1, sizeof(Pico.video), afile);\r
660 }\r
661 areaClose(afile);\r
662 return 0;\r
663}\r
664\r
665// tmp state\r
666struct PicoTmp\r
667{\r
668 unsigned short vram[0x8000];\r
669 unsigned short cram[0x40];\r
670 unsigned short vsram[0x40];\r
671\r
672 //struct PicoMisc m;\r
673 struct PicoVideo video;\r
674\r
675 struct {\r
676 struct Pico32x p32x;\r
677 unsigned short dram[2][0x20000/2];\r
678 unsigned short pal[0x100];\r
679 } t32x;\r
680};\r
681\r
682// returns data ptr to free() or PicoTmpStateRestore()\r
683void *PicoTmpStateSave(void)\r
684{\r
685 // gfx only for now\r
686 struct PicoTmp *t = malloc(sizeof(*t));\r
687 if (t == NULL)\r
688 return NULL;\r
689\r
690 memcpy(t->vram, Pico.vram, sizeof(Pico.vram));\r
691 memcpy(t->cram, Pico.cram, sizeof(Pico.cram));\r
692 memcpy(t->vsram, Pico.vsram, sizeof(Pico.vsram));\r
693 memcpy(&t->video, &Pico.video, sizeof(Pico.video));\r
694\r
f3a57b2d 695#ifndef NO_32X\r
b4db550e 696 if (PicoAHW & PAHW_32X) {\r
697 memcpy(&t->t32x.p32x, &Pico32x, sizeof(Pico32x));\r
698 memcpy(t->t32x.dram, Pico32xMem->dram, sizeof(Pico32xMem->dram));\r
699 memcpy(t->t32x.pal, Pico32xMem->pal, sizeof(Pico32xMem->pal));\r
700 }\r
f3a57b2d 701#endif\r
b4db550e 702\r
703 return t;\r
704}\r
705\r
706void PicoTmpStateRestore(void *data)\r
707{\r
708 struct PicoTmp *t = data;\r
709 if (t == NULL)\r
710 return;\r
711\r
712 memcpy(Pico.vram, t->vram, sizeof(Pico.vram));\r
713 memcpy(Pico.cram, t->cram, sizeof(Pico.cram));\r
714 memcpy(Pico.vsram, t->vsram, sizeof(Pico.vsram));\r
715 memcpy(&Pico.video, &t->video, sizeof(Pico.video));\r
716 Pico.m.dirtyPal = 1;\r
717\r
f3a57b2d 718#ifndef NO_32X\r
b4db550e 719 if (PicoAHW & PAHW_32X) {\r
720 memcpy(&Pico32x, &t->t32x.p32x, sizeof(Pico32x));\r
721 memcpy(Pico32xMem->dram, t->t32x.dram, sizeof(Pico32xMem->dram));\r
722 memcpy(Pico32xMem->pal, t->t32x.pal, sizeof(Pico32xMem->pal));\r
723 Pico32x.dirty_pal = 1;\r
724 }\r
f3a57b2d 725#endif\r
b4db550e 726}\r
727\r
ed4402a7 728// vim:shiftwidth=2:ts=2:expandtab\r
fast MegaDrive/MegaCD/32X emulator