[picodrive.git] / pico / state.c

/*\r
 * PicoDrive\r
 * (C) notaz, 2010\r
 *\r
 * This work is licensed under the terms of MAME license.\r
 * See COPYING file in the top-level directory.\r
 */\r
\r
#include "pico_int.h"\r
#include <zlib/zlib.h>\r
\r
#include "../cpu/sh2/sh2.h"\r
#include "sound/ym2612.h"\r
\r
// sn76496\r
extern int *sn76496_regs;\r
\r
typedef size_t (arearw)(void *p, size_t _size, size_t _n, void *file);\r
typedef size_t (areaeof)(void *file);\r
typedef int    (areaseek)(void *file, long offset, int whence);\r
typedef int    (areaclose)(void *file);\r
\r
static arearw    *areaRead;\r
static arearw    *areaWrite;\r
static areaeof   *areaEof;\r
static areaseek  *areaSeek;\r
static areaclose *areaClose;\r
\r
carthw_state_chunk *carthw_chunks;\r
void (*PicoStateProgressCB)(const char *str);\r
void (*PicoLoadStateHook)(void);\r
\r
\r
/* I/O functions */\r
static size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
{\r
  return gzread(file, p, _size * _n);\r
}\r
\r
static size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
{\r
  return gzwrite(file, p, _size * _n);\r
}\r
\r
static void set_cbs(int gz)\r
{\r
  if (gz) {\r
    areaRead  = gzRead2;\r
    areaWrite = gzWrite2;\r
    areaEof   = (areaeof *) gzeof;\r
    areaSeek  = (areaseek *) gzseek;\r
    areaClose = (areaclose *) gzclose;\r
  } else {\r
    areaRead  = (arearw *) fread;\r
    areaWrite = (arearw *) fwrite;\r
    areaEof   = (areaeof *) feof;\r
    areaSeek  = (areaseek *) fseek;\r
    areaClose = (areaclose *) fclose;\r
  }\r
}\r
\r
static void *open_save_file(const char *fname, int is_save)\r
{\r
  int len = strlen(fname);\r
  void *afile = NULL;\r
\r
  if (len > 3 && strcmp(fname + len - 3, ".gz") == 0)\r
  {\r
    if ( (afile = gzopen(fname, is_save ? "wb" : "rb")) ) {\r
      set_cbs(1);\r
      if (is_save)\r
        gzsetparams(afile, 9, Z_DEFAULT_STRATEGY);\r
    }\r
  }\r
  else\r
  {\r
    if ( (afile = fopen(fname, is_save ? "wb" : "rb")) ) {\r
      set_cbs(0);\r
    }\r
  }\r
\r
  return afile;\r
}\r
\r
// legacy savestate loading\r
#define SCANP(f, x) areaRead(&Pico.x, sizeof(Pico.x), 1, f)\r
\r
static int state_load_legacy(void *file)\r
{\r
  unsigned char head[32];\r
  unsigned char cpu[0x60];\r
  unsigned char cpu_z80[Z80_STATE_SIZE];\r
  void *ym2612_regs;\r
  int ok;\r
\r
  memset(&cpu,0,sizeof(cpu));\r
  memset(&cpu_z80,0,sizeof(cpu_z80));\r
\r
  memset(head, 0, sizeof(head));\r
  areaRead(head, sizeof(head), 1, file);\r
  if (strcmp((char *)head, "Pico") != 0)\r
    return -1;\r
\r
  elprintf(EL_STATUS, "legacy savestate");\r
\r
  // Scan all the memory areas:\r
  SCANP(file, ram);\r
  SCANP(file, vram);\r
  SCANP(file, zram);\r
  SCANP(file, cram);\r
  SCANP(file, vsram);\r
\r
  // Pack, scan and unpack the cpu data:\r
  areaRead(cpu, sizeof(cpu), 1, file);\r
  SekUnpackCpu(cpu, 0);\r
\r
  SCANP(file, m);\r
  SCANP(file, video);\r
\r
  ok = areaRead(cpu_z80, sizeof(cpu_z80), 1, file) == sizeof(cpu_z80);\r
  // do not unpack if we fail to load z80 state\r
  if (!ok) z80_reset();\r
  else     z80_unpack(cpu_z80);\r
\r
  ym2612_regs = YM2612GetRegs();\r
  areaRead(sn76496_regs, 28*4, 1, file);\r
  areaRead(ym2612_regs, 0x200+4, 1, file);\r
  ym2612_unpack_state();\r
\r
  return 0;\r
}\r
\r
// ---------------------------------------------------------------------------\r
\r
typedef enum {\r
  CHUNK_M68K = 1,\r
  CHUNK_RAM,\r
  CHUNK_VRAM,\r
  CHUNK_ZRAM,\r
  CHUNK_CRAM,    // 5\r
  CHUNK_VSRAM,\r
  CHUNK_MISC,\r
  CHUNK_VIDEO,\r
  CHUNK_Z80,\r
  CHUNK_PSG,     // 10\r
  CHUNK_FM,\r
  // CD stuff\r
  CHUNK_S68K,\r
  CHUNK_PRG_RAM,\r
  CHUNK_WORD_RAM,\r
  CHUNK_PCM_RAM, // 15\r
  CHUNK_BRAM,\r
  CHUNK_GA_REGS,\r
  CHUNK_PCM,\r
  CHUNK_CDC,\r
  CHUNK_CDD,     // 20\r
  CHUNK_SCD,\r
  CHUNK_RC,\r
  CHUNK_MISC_CD,\r
  //\r
  CHUNK_IOPORTS, // versions < 1.70 did not save that..\r
  CHUNK_SMS,     // 25\r
  // 32x\r
  CHUNK_MSH2,\r
  CHUNK_MSH2_DATA,\r
  CHUNK_MSH2_PERI,\r
  CHUNK_SSH2,\r
  CHUNK_SSH2_DATA, // 30\r
  CHUNK_SSH2_PERI,\r
  CHUNK_32XSYS,\r
  CHUNK_M68K_BIOS,\r
  CHUNK_MSH2_BIOS,\r
  CHUNK_SSH2_BIOS, // 35\r
  CHUNK_SDRAM,\r
  CHUNK_DRAM,\r
  CHUNK_32XPAL,\r
  //\r
  CHUNK_DEFAULT_COUNT,\r
  CHUNK_CARTHW_ = CHUNK_CARTHW,  // defined in PicoInt\r
} chunk_name_e;\r
\r
static const char * const chunk_names[] = {\r
  "INVALID!",\r
  "M68K state",\r
  "RAM",\r
  "VRAM",\r
  "ZRAM",\r
  "CRAM",      // 5\r
  "VSRAM",\r
  "emu state",\r
  "VIDEO",\r
  "Z80 state",\r
  "PSG",       // 10\r
  "FM",\r
  // CD stuff\r
  "S68K state",\r
  "PRG_RAM",\r
  "WORD_RAM",\r
  "PCM_RAM",   // 15\r
  "BRAM",\r
  "GATE ARRAY regs",\r
  "PCM state",\r
  "CDC",\r
  "CDD",       // 20\r
  "SCD",\r
  "GFX chip",\r
  "MCD state",\r
  //\r
  "IO",\r
  "SMS state", // 25\r
  // 32x\r
  "MSH2",\r
  "MSH2 data",\r
  "MSH2 peri",\r
  "SSH2",\r
  "SSH2 data", // 30\r
  "SSH2 peri",\r
  "32X system regs",\r
  "M68K BIOS",\r
  "MSH2 BIOS",\r
  "SSH2 BIOS", // 35\r
  "SDRAM",\r
  "DRAM",\r
  "PAL",\r
};\r
\r
static int write_chunk(chunk_name_e name, int len, void *data, void *file)\r
{\r
  size_t bwritten = 0;\r
  bwritten += areaWrite(&name, 1, 1, file);\r
  bwritten += areaWrite(&len, 1, 4, file);\r
  bwritten += areaWrite(data, 1, len, file);\r
\r
  return (bwritten == len + 4 + 1);\r
}\r
\r
#define CHECKED_WRITE(name,len,data) { \\r
  if (PicoStateProgressCB && name < CHUNK_DEFAULT_COUNT) { \\r
    strncpy(sbuff + 9, chunk_names[name], sizeof(sbuff) - 9); \\r
    PicoStateProgressCB(sbuff); \\r
  } \\r
  if (!write_chunk(name, len, data, file)) return 1; \\r
}\r
\r
#define CHECKED_WRITE_BUFF(name,buff) { \\r
  if (PicoStateProgressCB && name < CHUNK_DEFAULT_COUNT) { \\r
    strncpy(sbuff + 9, chunk_names[name], sizeof(sbuff) - 9); \\r
    PicoStateProgressCB(sbuff); \\r
  } \\r
  if (!write_chunk(name, sizeof(buff), &buff, file)) return 1; \\r
}\r
\r
static int state_save(void *file)\r
{\r
  char sbuff[32] = "Saving.. ";\r
  unsigned char buff[0x60], buff_z80[Z80_STATE_SIZE];\r
  void *ym2612_regs = YM2612GetRegs();\r
  int ver = 0x0170; // not really used..\r
\r
  areaWrite("PicoSEXT", 1, 8, file);\r
  areaWrite(&ver, 1, 4, file);\r
\r
  if (!(PicoAHW & PAHW_SMS)) {\r
    memset(buff, 0, sizeof(buff));\r
    SekPackCpu(buff, 0);\r
    CHECKED_WRITE_BUFF(CHUNK_M68K,  buff);\r
    CHECKED_WRITE_BUFF(CHUNK_RAM,   Pico.ram);\r
    CHECKED_WRITE_BUFF(CHUNK_VSRAM, Pico.vsram);\r
    CHECKED_WRITE_BUFF(CHUNK_IOPORTS, Pico.ioports);\r
    ym2612_pack_state();\r
    CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs);\r
  }\r
  else {\r
    CHECKED_WRITE_BUFF(CHUNK_SMS, Pico.ms);\r
  }\r
\r
  CHECKED_WRITE_BUFF(CHUNK_VRAM,  Pico.vram);\r
  CHECKED_WRITE_BUFF(CHUNK_ZRAM,  Pico.zram);\r
  CHECKED_WRITE_BUFF(CHUNK_CRAM,  Pico.cram);\r
  CHECKED_WRITE_BUFF(CHUNK_MISC,  Pico.m);\r
  CHECKED_WRITE_BUFF(CHUNK_VIDEO, Pico.video);\r
\r
  z80_pack(buff_z80);\r
  CHECKED_WRITE_BUFF(CHUNK_Z80, buff_z80);\r
  CHECKED_WRITE(CHUNK_PSG, 28*4, sn76496_regs);\r
\r
  if (PicoAHW & PAHW_MCD)\r
  {\r
    memset(buff, 0, sizeof(buff));\r
    SekPackCpu(buff, 1);\r
    if (Pico_mcd->s68k_regs[3] & 4) // 1M mode?\r
      wram_1M_to_2M(Pico_mcd->word_ram2M);\r
    Pico_mcd->m.hint_vector = *(unsigned short *)(Pico_mcd->bios + 0x72);\r
\r
    CHECKED_WRITE_BUFF(CHUNK_S68K,     buff);\r
    CHECKED_WRITE_BUFF(CHUNK_PRG_RAM,  Pico_mcd->prg_ram);\r
    CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram2M); // in 2M format\r
    CHECKED_WRITE_BUFF(CHUNK_PCM_RAM,  Pico_mcd->pcm_ram);\r
    CHECKED_WRITE_BUFF(CHUNK_BRAM,     Pico_mcd->bram);\r
    CHECKED_WRITE_BUFF(CHUNK_GA_REGS,  Pico_mcd->s68k_regs); // GA regs, not CPU regs\r
    CHECKED_WRITE_BUFF(CHUNK_PCM,      Pico_mcd->pcm);\r
    CHECKED_WRITE_BUFF(CHUNK_CDD,      Pico_mcd->cdd);\r
    CHECKED_WRITE_BUFF(CHUNK_CDC,      Pico_mcd->cdc);\r
    CHECKED_WRITE_BUFF(CHUNK_SCD,      Pico_mcd->scd);\r
    CHECKED_WRITE_BUFF(CHUNK_RC,       Pico_mcd->rot_comp);\r
    CHECKED_WRITE_BUFF(CHUNK_MISC_CD,  Pico_mcd->m);\r
\r
    if (Pico_mcd->s68k_regs[3] & 4) // convert back\r
      wram_2M_to_1M(Pico_mcd->word_ram2M);\r
  }\r
\r
#ifndef NO_32X\r
  if (PicoAHW & PAHW_32X)\r
  {\r
    unsigned char cpubuff[SH2_STATE_SIZE];\r
\r
    memset(cpubuff, 0, sizeof(cpubuff));\r
\r
    sh2_pack(&sh2s[0], cpubuff);\r
    CHECKED_WRITE_BUFF(CHUNK_MSH2,      cpubuff);\r
    CHECKED_WRITE_BUFF(CHUNK_MSH2_DATA, Pico32xMem->data_array[0]);\r
    CHECKED_WRITE_BUFF(CHUNK_MSH2_PERI, Pico32xMem->sh2_peri_regs[0]);\r
\r
    sh2_pack(&sh2s[1], cpubuff);\r
    CHECKED_WRITE_BUFF(CHUNK_SSH2,      cpubuff);\r
    CHECKED_WRITE_BUFF(CHUNK_SSH2_DATA, Pico32xMem->data_array[1]);\r
    CHECKED_WRITE_BUFF(CHUNK_SSH2_PERI, Pico32xMem->sh2_peri_regs[1]);\r
\r
    CHECKED_WRITE_BUFF(CHUNK_32XSYS,    Pico32x);\r
    CHECKED_WRITE_BUFF(CHUNK_M68K_BIOS, Pico32xMem->m68k_rom);\r
    CHECKED_WRITE_BUFF(CHUNK_MSH2_BIOS, Pico32xMem->sh2_rom_m);\r
    CHECKED_WRITE_BUFF(CHUNK_SSH2_BIOS, Pico32xMem->sh2_rom_s);\r
    CHECKED_WRITE_BUFF(CHUNK_SDRAM,     Pico32xMem->sdram);\r
    CHECKED_WRITE_BUFF(CHUNK_DRAM,      Pico32xMem->dram);\r
    CHECKED_WRITE_BUFF(CHUNK_32XPAL,    Pico32xMem->pal);\r
  }\r
#endif\r
\r
  if (carthw_chunks != NULL)\r
  {\r
    carthw_state_chunk *chwc;\r
    if (PicoStateProgressCB)\r
      PicoStateProgressCB("Saving.. cart hw state");\r
    for (chwc = carthw_chunks; chwc->ptr != NULL; chwc++)\r
      CHECKED_WRITE(chwc->chunk, chwc->size, chwc->ptr);\r
  }\r
\r
  return 0;\r
}\r
\r
static int g_read_offs = 0;\r
\r
#define R_ERROR_RETURN(error) \\r
{ \\r
  elprintf(EL_STATUS, "load_state @ %x: " error, g_read_offs); \\r
  return 1; \\r
}\r
\r
// when is eof really set?\r
#define CHECKED_READ(len,data) { \\r
  if (areaRead(data, 1, len, file) != len) { \\r
    if (len == 1 && areaEof(file)) goto readend; \\r
    R_ERROR_RETURN("areaRead: premature EOF\n"); \\r
    return 1; \\r
  } \\r
  g_read_offs += len; \\r
}\r
\r
#define CHECKED_READ2(len2,data) { \\r
  if (len2 != len) { \\r
    elprintf(EL_STATUS, "unexpected len %i, wanted %i (%s)", len, len2, #len2); \\r
    if (len > len2) R_ERROR_RETURN("failed."); \\r
    /* else read anyway and hope for the best.. */ \\r
  } \\r
  CHECKED_READ(len, data); \\r
}\r
\r
#define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff);\r
\r
static int state_load(void *file)\r
{\r
  unsigned char buff_m68k[0x60], buff_s68k[0x60];\r
  unsigned char buff_z80[Z80_STATE_SIZE];\r
  unsigned char buff_sh2[SH2_STATE_SIZE];\r
  unsigned char chunk;\r
  void *ym2612_regs;\r
  char header[8];\r
  int ver, len;\r
\r
  memset(buff_m68k, 0, sizeof(buff_m68k));\r
  memset(buff_s68k, 0, sizeof(buff_s68k));\r
  memset(buff_z80, 0, sizeof(buff_z80));\r
\r
  g_read_offs = 0;\r
  CHECKED_READ(8, header);\r
  if (strncmp(header, "PicoSMCD", 8) && strncmp(header, "PicoSEXT", 8))\r
    R_ERROR_RETURN("bad header");\r
  CHECKED_READ(4, &ver);\r
\r
  while (!areaEof(file))\r
  {\r
    CHECKED_READ(1, &chunk);\r
    CHECKED_READ(4, &len);\r
    if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");\r
    if (CHUNK_S68K <= chunk && chunk <= CHUNK_MISC_CD && !(PicoAHW & PAHW_MCD))\r
      R_ERROR_RETURN("cd chunk in non CD state?");\r
    if (CHUNK_MSH2 <= chunk && chunk <= CHUNK_32XPAL && !(PicoAHW & PAHW_32X))\r
      R_ERROR_RETURN("32x chunk in non 32x state?");\r
\r
    switch (chunk)\r
    {\r
      case CHUNK_M68K:\r
        CHECKED_READ_BUFF(buff_m68k);\r
        break;\r
\r
      case CHUNK_Z80:\r
        CHECKED_READ_BUFF(buff_z80);\r
        break;\r
\r
      case CHUNK_RAM:     CHECKED_READ_BUFF(Pico.ram); break;\r
      case CHUNK_VRAM:    CHECKED_READ_BUFF(Pico.vram); break;\r
      case CHUNK_ZRAM:    CHECKED_READ_BUFF(Pico.zram); break;\r
      case CHUNK_CRAM:    CHECKED_READ_BUFF(Pico.cram); break;\r
      case CHUNK_VSRAM:   CHECKED_READ_BUFF(Pico.vsram); break;\r
      case CHUNK_MISC:    CHECKED_READ_BUFF(Pico.m); break;\r
      case CHUNK_VIDEO:   CHECKED_READ_BUFF(Pico.video); break;\r
      case CHUNK_IOPORTS: CHECKED_READ_BUFF(Pico.ioports); break;\r
      case CHUNK_PSG:     CHECKED_READ2(28*4, sn76496_regs); break;\r
      case CHUNK_FM:\r
        ym2612_regs = YM2612GetRegs();\r
        CHECKED_READ2(0x200+4, ym2612_regs);\r
        ym2612_unpack_state();\r
        break;\r
\r
      case CHUNK_SMS:\r
        CHECKED_READ_BUFF(Pico.ms);\r
        break;\r
\r
      // cd stuff\r
      case CHUNK_S68K:\r
        CHECKED_READ_BUFF(buff_s68k);\r
        break;\r
\r
      case CHUNK_PRG_RAM:  CHECKED_READ_BUFF(Pico_mcd->prg_ram); break;\r
      case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_ram2M); break;\r
      case CHUNK_PCM_RAM:  CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break;\r
      case CHUNK_BRAM:     CHECKED_READ_BUFF(Pico_mcd->bram); break;\r
      case CHUNK_GA_REGS:  CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break;\r
      case CHUNK_PCM:      CHECKED_READ_BUFF(Pico_mcd->pcm); break;\r
      case CHUNK_CDD:      CHECKED_READ_BUFF(Pico_mcd->cdd); break;\r
      case CHUNK_CDC:      CHECKED_READ_BUFF(Pico_mcd->cdc); break;\r
      case CHUNK_SCD:      CHECKED_READ_BUFF(Pico_mcd->scd); break;\r
      case CHUNK_RC:       CHECKED_READ_BUFF(Pico_mcd->rot_comp); break;\r
      case CHUNK_MISC_CD:  CHECKED_READ_BUFF(Pico_mcd->m); break;\r
\r
      // 32x stuff\r
#ifndef NO_32X\r
      case CHUNK_MSH2:\r
        CHECKED_READ_BUFF(buff_sh2);\r
        sh2_unpack(&sh2s[0], buff_sh2);\r
        break;\r
\r
      case CHUNK_SSH2:\r
        CHECKED_READ_BUFF(buff_sh2);\r
        sh2_unpack(&sh2s[1], buff_sh2);\r
        break;\r
\r
      case CHUNK_MSH2_DATA:   CHECKED_READ_BUFF(Pico32xMem->data_array[0]); break;\r
      case CHUNK_MSH2_PERI:   CHECKED_READ_BUFF(Pico32xMem->sh2_peri_regs[0]); break;\r
      case CHUNK_SSH2_DATA:   CHECKED_READ_BUFF(Pico32xMem->data_array[1]); break;\r
      case CHUNK_SSH2_PERI:   CHECKED_READ_BUFF(Pico32xMem->sh2_peri_regs[1]); break;\r
      case CHUNK_32XSYS:      CHECKED_READ_BUFF(Pico32x); break;\r
      case CHUNK_M68K_BIOS:   CHECKED_READ_BUFF(Pico32xMem->m68k_rom); break;\r
      case CHUNK_MSH2_BIOS:   CHECKED_READ_BUFF(Pico32xMem->sh2_rom_m); break;\r
      case CHUNK_SSH2_BIOS:   CHECKED_READ_BUFF(Pico32xMem->sh2_rom_s); break;\r
      case CHUNK_SDRAM:       CHECKED_READ_BUFF(Pico32xMem->sdram); break;\r
      case CHUNK_DRAM:        CHECKED_READ_BUFF(Pico32xMem->dram); break;\r
      case CHUNK_32XPAL:      CHECKED_READ_BUFF(Pico32xMem->pal); break;\r
#endif\r
      default:\r
        if (carthw_chunks != NULL)\r
        {\r
          carthw_state_chunk *chwc;\r
          for (chwc = carthw_chunks; chwc->ptr != NULL; chwc++) {\r
            if (chwc->chunk == chunk) {\r
              CHECKED_READ2(chwc->size, chwc->ptr);\r
              goto breakswitch;\r
            }\r
          }\r
        }\r
        elprintf(EL_STATUS, "load_state: skipping unknown chunk %i of size %i", chunk, len);\r
        areaSeek(file, len, SEEK_CUR);\r
        break;\r
    }\r
breakswitch:;\r
  }\r
\r
readend:\r
  if (PicoAHW & PAHW_SMS)\r
    PicoStateLoadedMS();\r
\r
  if (PicoAHW & PAHW_MCD)\r
  {\r
    PicoMemStateLoaded();\r
\r
    if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))\r
      cdda_start_play();\r
\r
    SekUnpackCpu(buff_s68k, 1);\r
  }\r
\r
  // must unpack 68k and z80 after banks are set up\r
  if (!(PicoAHW & PAHW_SMS))\r
    SekUnpackCpu(buff_m68k, 0);\r
\r
  z80_unpack(buff_z80);\r
\r
  if (PicoAHW & PAHW_32X)\r
    Pico32xStateLoaded();\r
\r
  return 0;\r
}\r
\r
static int state_load_gfx(void *file)\r
{\r
  int ver, len, found = 0, to_find = 4;\r
  char buff[8];\r
\r
  if (PicoAHW & PAHW_32X)\r
    to_find += 2;\r
\r
  g_read_offs = 0;\r
  CHECKED_READ(8, buff);\r
  if (strncmp((char *)buff, "PicoSMCD", 8) && strncmp((char *)buff, "PicoSEXT", 8))\r
    R_ERROR_RETURN("bad header");\r
  CHECKED_READ(4, &ver);\r
\r
  while (!areaEof(file) && found < to_find)\r
  {\r
    CHECKED_READ(1, buff);\r
    CHECKED_READ(4, &len);\r
    if (len < 0 || len > 1024*512) R_ERROR_RETURN("bad length");\r
    if (buff[0] > CHUNK_FM && buff[0] <= CHUNK_MISC_CD && !(PicoAHW & PAHW_MCD))\r
      R_ERROR_RETURN("cd chunk in non CD state?");\r
\r
    switch (buff[0])\r
    {\r
      case CHUNK_VRAM:  CHECKED_READ_BUFF(Pico.vram);  found++; break;\r
      case CHUNK_CRAM:  CHECKED_READ_BUFF(Pico.cram);  found++; break;\r
      case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); found++; break;\r
      case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); found++; break;\r
\r
#ifndef NO_32X\r
      case CHUNK_DRAM:\r
        if (Pico32xMem != NULL)\r
          CHECKED_READ_BUFF(Pico32xMem->dram);\r
        break;\r
\r
      case CHUNK_32XPAL:\r
        if (Pico32xMem != NULL)\r
          CHECKED_READ_BUFF(Pico32xMem->pal);\r
        Pico32x.dirty_pal = 1;\r
        break;\r
\r
      case CHUNK_32XSYS:\r
        CHECKED_READ_BUFF(Pico32x);\r
        break;\r
#endif\r
      default:\r
        areaSeek(file, len, SEEK_CUR);\r
        break;\r
    }\r
  }\r
\r
readend:\r
  return 0;\r
}\r
\r
int PicoState(const char *fname, int is_save)\r
{\r
  void *afile = NULL;\r
  int ret;\r
\r
  afile = open_save_file(fname, is_save);\r
  if (afile == NULL)\r
    return -1;\r
\r
  if (is_save)\r
    ret = state_save(afile);\r
  else {\r
    ret = state_load(afile);\r
    if (ret != 0) {\r
      areaSeek(afile, 0, SEEK_SET);\r
      ret = state_load_legacy(afile);\r
    }\r
\r
    if (PicoLoadStateHook != NULL)\r
      PicoLoadStateHook();\r
    Pico.m.dirtyPal = 1;\r
  }\r
\r
  areaClose(afile);\r
  return ret;\r
}\r
\r
int PicoStateLoadGfx(const char *fname)\r
{\r
  void *afile;\r
  int ret;\r
\r
  afile = open_save_file(fname, 0);\r
  if (afile == NULL)\r
    return -1;\r
\r
  ret = state_load_gfx(afile);\r
  if (ret != 0) {\r
    // assume legacy\r
    areaSeek(afile, 0x10020, SEEK_SET);  // skip header and RAM\r
    areaRead(Pico.vram, 1, sizeof(Pico.vram), afile);\r
    areaSeek(afile, 0x2000, SEEK_CUR);\r
    areaRead(Pico.cram, 1, sizeof(Pico.cram), afile);\r
    areaRead(Pico.vsram, 1, sizeof(Pico.vsram), afile);\r
    areaSeek(afile, 0x221a0, SEEK_SET);\r
    areaRead(&Pico.video, 1, sizeof(Pico.video), afile);\r
  }\r
  areaClose(afile);\r
  return 0;\r
}\r
\r
// tmp state\r
struct PicoTmp\r
{\r
  unsigned short vram[0x8000];\r
  unsigned short cram[0x40];\r
  unsigned short vsram[0x40];\r
\r
  //struct PicoMisc m;\r
  struct PicoVideo video;\r
\r
  struct {\r
    struct Pico32x p32x;\r
    unsigned short dram[2][0x20000/2];\r
    unsigned short pal[0x100];\r
  } t32x;\r
};\r
\r
// returns data ptr to free() or PicoTmpStateRestore()\r
void *PicoTmpStateSave(void)\r
{\r
  // gfx only for now\r
  struct PicoTmp *t = malloc(sizeof(*t));\r
  if (t == NULL)\r
    return NULL;\r
\r
  memcpy(t->vram, Pico.vram, sizeof(Pico.vram));\r
  memcpy(t->cram, Pico.cram, sizeof(Pico.cram));\r
  memcpy(t->vsram, Pico.vsram, sizeof(Pico.vsram));\r
  memcpy(&t->video, &Pico.video, sizeof(Pico.video));\r
\r
#ifndef NO_32X\r
  if (PicoAHW & PAHW_32X) {\r
    memcpy(&t->t32x.p32x, &Pico32x, sizeof(Pico32x));\r
    memcpy(t->t32x.dram, Pico32xMem->dram, sizeof(Pico32xMem->dram));\r
    memcpy(t->t32x.pal, Pico32xMem->pal, sizeof(Pico32xMem->pal));\r
  }\r
#endif\r
\r
  return t;\r
}\r
\r
void PicoTmpStateRestore(void *data)\r
{\r
  struct PicoTmp *t = data;\r
  if (t == NULL)\r
    return;\r
\r
  memcpy(Pico.vram, t->vram, sizeof(Pico.vram));\r
  memcpy(Pico.cram, t->cram, sizeof(Pico.cram));\r
  memcpy(Pico.vsram, t->vsram, sizeof(Pico.vsram));\r
  memcpy(&Pico.video, &t->video, sizeof(Pico.video));\r
  Pico.m.dirtyPal = 1;\r
\r
#ifndef NO_32X\r
  if (PicoAHW & PAHW_32X) {\r
    memcpy(&Pico32x, &t->t32x.p32x, sizeof(Pico32x));\r
    memcpy(Pico32xMem->dram, t->t32x.dram, sizeof(Pico32xMem->dram));\r
    memcpy(Pico32xMem->pal, t->t32x.pal, sizeof(Pico32xMem->pal));\r
    Pico32x.dirty_pal = 1;\r
  }\r
#endif\r
}\r
\r
// vim:shiftwidth=2:expandtab\r
Commit	Line	Data
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
	14	\r
	15	// sn76496\r
	16	extern int *sn76496_regs;\r
	17	\r
	18	typedef size_t (arearw)(void p, size_t _size, size_t _n, void file);\r
	19	typedef size_t (areaeof)(void *file);\r
	20	typedef int (areaseek)(void *file, long offset, int whence);\r
	21	typedef int (areaclose)(void *file);\r
	22	\r
	23	static arearw *areaRead;\r
	24	static arearw *areaWrite;\r
	25	static areaeof *areaEof;\r
	26	static areaseek *areaSeek;\r
	27	static areaclose *areaClose;\r
	28	\r
	29	carthw_state_chunk *carthw_chunks;\r
	30	void (PicoStateProgressCB)(const char str);\r
	31	void (*PicoLoadStateHook)(void);\r
	32	\r
	33	\r
	34	/* I/O functions */\r
	35	static size_t gzRead2(void p, size_t _size, size_t _n, void file)\r
	36	{\r
	37	return gzread(file, p, _size * _n);\r
	38	}\r
	39	\r
	40	static size_t gzWrite2(void p, size_t _size, size_t _n, void file)\r
	41	{\r
	42	return gzwrite(file, p, _size * _n);\r
	43	}\r
	44	\r
	45	static void set_cbs(int gz)\r
	46	{\r
	47	if (gz) {\r
	48	areaRead = gzRead2;\r
	49	areaWrite = gzWrite2;\r
	50	areaEof = (areaeof *) gzeof;\r
	51	areaSeek = (areaseek *) gzseek;\r
	52	areaClose = (areaclose *) gzclose;\r
	53	} else {\r
	54	areaRead = (arearw *) fread;\r
	55	areaWrite = (arearw *) fwrite;\r
	56	areaEof = (areaeof *) feof;\r
	57	areaSeek = (areaseek *) fseek;\r
	58	areaClose = (areaclose *) fclose;\r
	59	}\r
	60	}\r
	61	\r
	62	static void open_save_file(const char fname, int is_save)\r
	63	{\r
	64	int len = strlen(fname);\r
	65	void *afile = NULL;\r
	66	\r
	67	if (len > 3 && strcmp(fname + len - 3, ".gz") == 0)\r
	68	{\r
	69	if ( (afile = gzopen(fname, is_save ? "wb" : "rb")) ) {\r
	70	set_cbs(1);\r
	71	if (is_save)\r
72	gzsetparams(afile, 9, Z_DEFAULT_STRATEGY);\r
73	}\r
74	}\r
75	else\r
76	{\r
77	if ( (afile = fopen(fname, is_save ? "wb" : "rb")) ) {\r
78	set_cbs(0);\r
79	}\r
80	}\r
81	\r
82	return afile;\r
83	}\r
84	\r
85	// legacy savestate loading\r
86	#define SCANP(f, x) areaRead(&Pico.x, sizeof(Pico.x), 1, f)\r
87	\r
88	static int state_load_legacy(void *file)\r
89	{\r
90	unsigned char head[32];\r
91	unsigned char cpu[0x60];\r
92	unsigned char cpu_z80[Z80_STATE_SIZE];\r
93	void *ym2612_regs;\r
94	int ok;\r
95	\r
96	memset(&cpu,0,sizeof(cpu));\r
97	memset(&cpu_z80,0,sizeof(cpu_z80));\r
98	\r
99	memset(head, 0, sizeof(head));\r
100	areaRead(head, sizeof(head), 1, file);\r
101	if (strcmp((char *)head, "Pico") != 0)\r
102	return -1;\r
103	\r
104	elprintf(EL_STATUS, "legacy savestate");\r
105	\r
106	// Scan all the memory areas:\r
107	SCANP(file, ram);\r
108	SCANP(file, vram);\r
109	SCANP(file, zram);\r
110	SCANP(file, cram);\r
111	SCANP(file, vsram);\r
112	\r
113	// Pack, scan and unpack the cpu data:\r
114	areaRead(cpu, sizeof(cpu), 1, file);\r
115	SekUnpackCpu(cpu, 0);\r
116	\r
117	SCANP(file, m);\r
118	SCANP(file, video);\r
119	\r
120	ok = areaRead(cpu_z80, sizeof(cpu_z80), 1, file) == sizeof(cpu_z80);\r
121	// do not unpack if we fail to load z80 state\r
122	if (!ok) z80_reset();\r
123	else z80_unpack(cpu_z80);\r
124	\r
125	ym2612_regs = YM2612GetRegs();\r
126	areaRead(sn76496_regs, 28*4, 1, file);\r
127	areaRead(ym2612_regs, 0x200+4, 1, file);\r
128	ym2612_unpack_state();\r
129	\r
130	return 0;\r
131	}\r
132	\r
133	// ---------------------------------------------------------------------------\r
134	\r
135	typedef enum {\r
136	CHUNK_M68K = 1,\r
137	CHUNK_RAM,\r
138	CHUNK_VRAM,\r
139	CHUNK_ZRAM,\r
140	CHUNK_CRAM, // 5\r
141	CHUNK_VSRAM,\r
142	CHUNK_MISC,\r
143	CHUNK_VIDEO,\r
144	CHUNK_Z80,\r
145	CHUNK_PSG, // 10\r
146	CHUNK_FM,\r
147	// CD stuff\r
148	CHUNK_S68K,\r
149	CHUNK_PRG_RAM,\r
150	CHUNK_WORD_RAM,\r
151	CHUNK_PCM_RAM, // 15\r
152	CHUNK_BRAM,\r
153	CHUNK_GA_REGS,\r
154	CHUNK_PCM,\r
155	CHUNK_CDC,\r
156	CHUNK_CDD, // 20\r
157	CHUNK_SCD,\r
158	CHUNK_RC,\r
159	CHUNK_MISC_CD,\r
160	//\r
161	CHUNK_IOPORTS, // versions < 1.70 did not save that..\r
162	CHUNK_SMS, // 25\r
163	// 32x\r
164	CHUNK_MSH2,\r
165	CHUNK_MSH2_DATA,\r
166	CHUNK_MSH2_PERI,\r
167	CHUNK_SSH2,\r
168	CHUNK_SSH2_DATA, // 30\r
169	CHUNK_SSH2_PERI,\r
170	CHUNK_32XSYS,\r
171	CHUNK_M68K_BIOS,\r
172	CHUNK_MSH2_BIOS,\r
173	CHUNK_SSH2_BIOS, // 35\r
174	CHUNK_SDRAM,\r
175	CHUNK_DRAM,\r
176	CHUNK_32XPAL,\r
177	//\r
178	CHUNK_DEFAULT_COUNT,\r
179	CHUNK_CARTHW_ = CHUNK_CARTHW, // defined in PicoInt\r
180	} chunk_name_e;\r
181	\r
182	static const char * const chunk_names[] = {\r
183	"INVALID!",\r
184	"M68K state",\r
185	"RAM",\r
186	"VRAM",\r
187	"ZRAM",\r
188	"CRAM", // 5\r
189	"VSRAM",\r
190	"emu state",\r
191	"VIDEO",\r
192	"Z80 state",\r
193	"PSG", // 10\r
194	"FM",\r
195	// CD stuff\r
196	"S68K state",\r
197	"PRG_RAM",\r
198	"WORD_RAM",\r
199	"PCM_RAM", // 15\r
200	"BRAM",\r
201	"GATE ARRAY regs",\r
202	"PCM state",\r
203	"CDC",\r
204	"CDD", // 20\r
205	"SCD",\r
206	"GFX chip",\r
207	"MCD state",\r
208	//\r
209	"IO",\r
210	"SMS state", // 25\r
211	// 32x\r
212	"MSH2",\r
213	"MSH2 data",\r
214	"MSH2 peri",\r
215	"SSH2",\r
216	"SSH2 data", // 30\r
217	"SSH2 peri",\r
218	"32X system regs",\r
219	"M68K BIOS",\r
220	"MSH2 BIOS",\r
221	"SSH2 BIOS", // 35\r
222	"SDRAM",\r
223	"DRAM",\r
224	"PAL",\r
225	};\r
226	\r
227	static 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
253	static 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
293	Pico_mcd->m.hint_vector = (unsigned short )(Pico_mcd->bios + 0x72);\r
294	\r
295	CHECKED_WRITE_BUFF(CHUNK_S68K, buff);\r
296	CHECKED_WRITE_BUFF(CHUNK_PRG_RAM, Pico_mcd->prg_ram);\r
297	CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram2M); // in 2M format\r
298	CHECKED_WRITE_BUFF(CHUNK_PCM_RAM, Pico_mcd->pcm_ram);\r
299	CHECKED_WRITE_BUFF(CHUNK_BRAM, Pico_mcd->bram);\r
300	CHECKED_WRITE_BUFF(CHUNK_GA_REGS, Pico_mcd->s68k_regs); // GA regs, not CPU regs\r
301	CHECKED_WRITE_BUFF(CHUNK_PCM, Pico_mcd->pcm);\r
302	CHECKED_WRITE_BUFF(CHUNK_CDD, Pico_mcd->cdd);\r
303	CHECKED_WRITE_BUFF(CHUNK_CDC, Pico_mcd->cdc);\r
304	CHECKED_WRITE_BUFF(CHUNK_SCD, Pico_mcd->scd);\r
305	CHECKED_WRITE_BUFF(CHUNK_RC, Pico_mcd->rot_comp);\r
306	CHECKED_WRITE_BUFF(CHUNK_MISC_CD, Pico_mcd->m);\r
307	\r
308	if (Pico_mcd->s68k_regs[3] & 4) // convert back\r
309	wram_2M_to_1M(Pico_mcd->word_ram2M);\r
310	}\r
311	\r
f3a57b2d	312	#ifndef NO_32X\r
b4db550e	313	if (PicoAHW & PAHW_32X)\r
	314	{\r
	315	unsigned char cpubuff[SH2_STATE_SIZE];\r
	316	\r
	317	memset(cpubuff, 0, sizeof(cpubuff));\r
	318	\r
	319	sh2_pack(&sh2s[0], cpubuff);\r
	320	CHECKED_WRITE_BUFF(CHUNK_MSH2, cpubuff);\r
	321	CHECKED_WRITE_BUFF(CHUNK_MSH2_DATA, Pico32xMem->data_array[0]);\r
	322	CHECKED_WRITE_BUFF(CHUNK_MSH2_PERI, Pico32xMem->sh2_peri_regs[0]);\r
	323	\r
	324	sh2_pack(&sh2s[1], cpubuff);\r
	325	CHECKED_WRITE_BUFF(CHUNK_SSH2, cpubuff);\r
	326	CHECKED_WRITE_BUFF(CHUNK_SSH2_DATA, Pico32xMem->data_array[1]);\r
	327	CHECKED_WRITE_BUFF(CHUNK_SSH2_PERI, Pico32xMem->sh2_peri_regs[1]);\r
	328	\r
	329	CHECKED_WRITE_BUFF(CHUNK_32XSYS, Pico32x);\r
	330	CHECKED_WRITE_BUFF(CHUNK_M68K_BIOS, Pico32xMem->m68k_rom);\r
	331	CHECKED_WRITE_BUFF(CHUNK_MSH2_BIOS, Pico32xMem->sh2_rom_m);\r
	332	CHECKED_WRITE_BUFF(CHUNK_SSH2_BIOS, Pico32xMem->sh2_rom_s);\r
	333	CHECKED_WRITE_BUFF(CHUNK_SDRAM, Pico32xMem->sdram);\r
	334	CHECKED_WRITE_BUFF(CHUNK_DRAM, Pico32xMem->dram);\r
	335	CHECKED_WRITE_BUFF(CHUNK_32XPAL, Pico32xMem->pal);\r
	336	}\r
f3a57b2d	337	#endif\r
b4db550e	338	\r
	339	if (carthw_chunks != NULL)\r
	340	{\r
	341	carthw_state_chunk *chwc;\r
	342	if (PicoStateProgressCB)\r
	343	PicoStateProgressCB("Saving.. cart hw state");\r
	344	for (chwc = carthw_chunks; chwc->ptr != NULL; chwc++)\r
	345	CHECKED_WRITE(chwc->chunk, chwc->size, chwc->ptr);\r
	346	}\r
	347	\r
	348	return 0;\r
	349	}\r
	350	\r
	351	static int g_read_offs = 0;\r
	352	\r
	353	#define R_ERROR_RETURN(error) \\r
	354	{ \\r
	355	elprintf(EL_STATUS, "load_state @ %x: " error, g_read_offs); \\r
	356	return 1; \\r
	357	}\r
	358	\r
	359	// when is eof really set?\r
	360	#define CHECKED_READ(len,data) { \\r
	361	if (areaRead(data, 1, len, file) != len) { \\r
	362	if (len == 1 && areaEof(file)) goto readend; \\r
	363	R_ERROR_RETURN("areaRead: premature EOF\n"); \\r
	364	return 1; \\r
	365	} \\r
	366	g_read_offs += len; \\r
	367	}\r
	368	\r
	369	#define CHECKED_READ2(len2,data) { \\r
	370	if (len2 != len) { \\r
	371	elprintf(EL_STATUS, "unexpected len %i, wanted %i (%s)", len, len2, #len2); \\r
	372	if (len > len2) R_ERROR_RETURN("failed."); \\r
	373	/* else read anyway and hope for the best.. */ \\r
	374	} \\r
	375	CHECKED_READ(len, data); \\r
	376	}\r
	377	\r
	378	#define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff);\r
	379	\r
	380	static int state_load(void *file)\r
	381	{\r
	382	unsigned char buff_m68k[0x60], buff_s68k[0x60];\r
	383	unsigned char buff_z80[Z80_STATE_SIZE];\r
	384	unsigned char buff_sh2[SH2_STATE_SIZE];\r
	385	unsigned char chunk;\r
	386	void *ym2612_regs;\r
	387	char header[8];\r
	388	int ver, len;\r
	389	\r
03065bb6	390	memset(buff_m68k, 0, sizeof(buff_m68k));\r
	391	memset(buff_s68k, 0, sizeof(buff_s68k));\r
	392	memset(buff_z80, 0, sizeof(buff_z80));\r
	393	\r
b4db550e	394	g_read_offs = 0;\r
	395	CHECKED_READ(8, header);\r
	396	if (strncmp(header, "PicoSMCD", 8) && strncmp(header, "PicoSEXT", 8))\r
	397	R_ERROR_RETURN("bad header");\r
	398	CHECKED_READ(4, &ver);\r
	399	\r
	400	while (!areaEof(file))\r
	401	{\r
	402	CHECKED_READ(1, &chunk);\r
	403	CHECKED_READ(4, &len);\r
	404	if (len < 0 \|\| len > 1024*512) R_ERROR_RETURN("bad length");\r
	405	if (CHUNK_S68K <= chunk && chunk <= CHUNK_MISC_CD && !(PicoAHW & PAHW_MCD))\r
	406	R_ERROR_RETURN("cd chunk in non CD state?");\r
	407	if (CHUNK_MSH2 <= chunk && chunk <= CHUNK_32XPAL && !(PicoAHW & PAHW_32X))\r
	408	R_ERROR_RETURN("32x chunk in non 32x state?");\r
	409	\r
	410	switch (chunk)\r
	411	{\r
	412	case CHUNK_M68K:\r
	413	CHECKED_READ_BUFF(buff_m68k);\r
	414	break;\r
	415	\r
	416	case CHUNK_Z80:\r
	417	CHECKED_READ_BUFF(buff_z80);\r
b4db550e	418	break;\r
	419	\r
	420	case CHUNK_RAM: CHECKED_READ_BUFF(Pico.ram); break;\r
	421	case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); break;\r
	422	case CHUNK_ZRAM: CHECKED_READ_BUFF(Pico.zram); break;\r
	423	case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); break;\r
	424	case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); break;\r
	425	case CHUNK_MISC: CHECKED_READ_BUFF(Pico.m); break;\r
	426	case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); break;\r
	427	case CHUNK_IOPORTS: CHECKED_READ_BUFF(Pico.ioports); break;\r
	428	case CHUNK_PSG: CHECKED_READ2(28*4, sn76496_regs); break;\r
	429	case CHUNK_FM:\r
	430	ym2612_regs = YM2612GetRegs();\r
	431	CHECKED_READ2(0x200+4, ym2612_regs);\r
	432	ym2612_unpack_state();\r
	433	break;\r
	434	\r
	435	case CHUNK_SMS:\r
	436	CHECKED_READ_BUFF(Pico.ms);\r
	437	break;\r
	438	\r
	439	// cd stuff\r
	440	case CHUNK_S68K:\r
	441	CHECKED_READ_BUFF(buff_s68k);\r
	442	break;\r
	443	\r
	444	case CHUNK_PRG_RAM: CHECKED_READ_BUFF(Pico_mcd->prg_ram); break;\r
	445	case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_ram2M); break;\r
	446	case CHUNK_PCM_RAM: CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break;\r
	447	case CHUNK_BRAM: CHECKED_READ_BUFF(Pico_mcd->bram); break;\r
	448	case CHUNK_GA_REGS: CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break;\r
	449	case CHUNK_PCM: CHECKED_READ_BUFF(Pico_mcd->pcm); break;\r
	450	case CHUNK_CDD: CHECKED_READ_BUFF(Pico_mcd->cdd); break;\r
	451	case CHUNK_CDC: CHECKED_READ_BUFF(Pico_mcd->cdc); break;\r
	452	case CHUNK_SCD: CHECKED_READ_BUFF(Pico_mcd->scd); break;\r
	453	case CHUNK_RC: CHECKED_READ_BUFF(Pico_mcd->rot_comp); break;\r
	454	case CHUNK_MISC_CD: CHECKED_READ_BUFF(Pico_mcd->m); break;\r
	455	\r
	456	// 32x stuff\r
f3a57b2d	457	#ifndef NO_32X\r
b4db550e	458	case CHUNK_MSH2:\r
	459	CHECKED_READ_BUFF(buff_sh2);\r
	460	sh2_unpack(&sh2s[0], buff_sh2);\r
	461	break;\r
	462	\r
	463	case CHUNK_SSH2:\r
	464	CHECKED_READ_BUFF(buff_sh2);\r
	465	sh2_unpack(&sh2s[1], buff_sh2);\r
	466	break;\r
	467	\r
	468	case CHUNK_MSH2_DATA: CHECKED_READ_BUFF(Pico32xMem->data_array[0]); break;\r
	469	case CHUNK_MSH2_PERI: CHECKED_READ_BUFF(Pico32xMem->sh2_peri_regs[0]); break;\r
	470	case CHUNK_SSH2_DATA: CHECKED_READ_BUFF(Pico32xMem->data_array[1]); break;\r
	471	case CHUNK_SSH2_PERI: CHECKED_READ_BUFF(Pico32xMem->sh2_peri_regs[1]); break;\r
	472	case CHUNK_32XSYS: CHECKED_READ_BUFF(Pico32x); break;\r
	473	case CHUNK_M68K_BIOS: CHECKED_READ_BUFF(Pico32xMem->m68k_rom); break;\r
	474	case CHUNK_MSH2_BIOS: CHECKED_READ_BUFF(Pico32xMem->sh2_rom_m); break;\r
	475	case CHUNK_SSH2_BIOS: CHECKED_READ_BUFF(Pico32xMem->sh2_rom_s); break;\r
	476	case CHUNK_SDRAM: CHECKED_READ_BUFF(Pico32xMem->sdram); break;\r
	477	case CHUNK_DRAM: CHECKED_READ_BUFF(Pico32xMem->dram); break;\r
	478	case CHUNK_32XPAL: CHECKED_READ_BUFF(Pico32xMem->pal); break;\r
f3a57b2d	479	#endif\r
b4db550e	480	default:\r
	481	if (carthw_chunks != NULL)\r
	482	{\r
	483	carthw_state_chunk *chwc;\r
	484	for (chwc = carthw_chunks; chwc->ptr != NULL; chwc++) {\r
	485	if (chwc->chunk == chunk) {\r
	486	CHECKED_READ2(chwc->size, chwc->ptr);\r
	487	goto breakswitch;\r
	488	}\r
	489	}\r
	490	}\r
	491	elprintf(EL_STATUS, "load_state: skipping unknown chunk %i of size %i", chunk, len);\r
	492	areaSeek(file, len, SEEK_CUR);\r
	493	break;\r
	494	}\r
	495	breakswitch:;\r
	496	}\r
	497	\r
	498	readend:\r
	499	if (PicoAHW & PAHW_SMS)\r
	500	PicoStateLoadedMS();\r
	501	\r
	502	if (PicoAHW & PAHW_MCD)\r
	503	{\r
	504	PicoMemStateLoaded();\r
	505	\r
	506	if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))\r
	507	cdda_start_play();\r
	508	\r
b4db550e	509	SekUnpackCpu(buff_s68k, 1);\r
	510	}\r
	511	\r
03065bb6	512	// must unpack 68k and z80 after banks are set up\r
b4db550e	513	if (!(PicoAHW & PAHW_SMS))\r
	514	SekUnpackCpu(buff_m68k, 0);\r
	515	\r
03065bb6	516	z80_unpack(buff_z80);\r
03065bb6	517	\r
b4db550e	518	if (PicoAHW & PAHW_32X)\r
	519	Pico32xStateLoaded();\r
	520	\r
	521	return 0;\r
	522	}\r
	523	\r
	524	static int state_load_gfx(void *file)\r
	525	{\r
	526	int ver, len, found = 0, to_find = 4;\r
	527	char buff[8];\r
	528	\r
	529	if (PicoAHW & PAHW_32X)\r
	530	to_find += 2;\r
	531	\r
	532	g_read_offs = 0;\r
	533	CHECKED_READ(8, buff);\r
	534	if (strncmp((char )buff, "PicoSMCD", 8) && strncmp((char )buff, "PicoSEXT", 8))\r
	535	R_ERROR_RETURN("bad header");\r
	536	CHECKED_READ(4, &ver);\r
	537	\r
	538	while (!areaEof(file) && found < to_find)\r
	539	{\r
	540	CHECKED_READ(1, buff);\r
	541	CHECKED_READ(4, &len);\r
	542	if (len < 0 \|\| len > 1024*512) R_ERROR_RETURN("bad length");\r
	543	if (buff[0] > CHUNK_FM && buff[0] <= CHUNK_MISC_CD && !(PicoAHW & PAHW_MCD))\r
	544	R_ERROR_RETURN("cd chunk in non CD state?");\r
	545	\r
	546	switch (buff[0])\r
	547	{\r
	548	case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); found++; break;\r
	549	case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); found++; break;\r
	550	case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); found++; break;\r
	551	case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); found++; break;\r
	552	\r
f3a57b2d	553	#ifndef NO_32X\r
b4db550e	554	case CHUNK_DRAM:\r
	555	if (Pico32xMem != NULL)\r
	556	CHECKED_READ_BUFF(Pico32xMem->dram);\r
	557	break;\r
	558	\r
	559	case CHUNK_32XPAL:\r
	560	if (Pico32xMem != NULL)\r
	561	CHECKED_READ_BUFF(Pico32xMem->pal);\r
	562	Pico32x.dirty_pal = 1;\r
	563	break;\r
	564	\r
	565	case CHUNK_32XSYS:\r
	566	CHECKED_READ_BUFF(Pico32x);\r
	567	break;\r
f3a57b2d	568	#endif\r
b4db550e	569	default:\r
	570	areaSeek(file, len, SEEK_CUR);\r
	571	break;\r
	572	}\r
	573	}\r
	574	\r
	575	readend:\r
	576	return 0;\r
	577	}\r
	578	\r
	579	int PicoState(const char *fname, int is_save)\r
	580	{\r
	581	void *afile = NULL;\r
	582	int ret;\r
	583	\r
	584	afile = open_save_file(fname, is_save);\r
	585	if (afile == NULL)\r
	586	return -1;\r
	587	\r
	588	if (is_save)\r
	589	ret = state_save(afile);\r
	590	else {\r
	591	ret = state_load(afile);\r
	592	if (ret != 0) {\r
	593	areaSeek(afile, 0, SEEK_SET);\r
	594	ret = state_load_legacy(afile);\r
	595	}\r
	596	\r
	597	if (PicoLoadStateHook != NULL)\r
	598	PicoLoadStateHook();\r
	599	Pico.m.dirtyPal = 1;\r
	600	}\r
	601	\r
	602	areaClose(afile);\r
	603	return ret;\r
	604	}\r
	605	\r
	606	int PicoStateLoadGfx(const char *fname)\r
	607	{\r
	608	void *afile;\r
	609	int ret;\r
	610	\r
	611	afile = open_save_file(fname, 0);\r
	612	if (afile == NULL)\r
	613	return -1;\r
	614	\r
	615	ret = state_load_gfx(afile);\r
	616	if (ret != 0) {\r
	617	// assume legacy\r
	618	areaSeek(afile, 0x10020, SEEK_SET); // skip header and RAM\r
	619	areaRead(Pico.vram, 1, sizeof(Pico.vram), afile);\r
	620	areaSeek(afile, 0x2000, SEEK_CUR);\r
	621	areaRead(Pico.cram, 1, sizeof(Pico.cram), afile);\r
	622	areaRead(Pico.vsram, 1, sizeof(Pico.vsram), afile);\r
	623	areaSeek(afile, 0x221a0, SEEK_SET);\r
	624	areaRead(&Pico.video, 1, sizeof(Pico.video), afile);\r
	625	}\r
	626	areaClose(afile);\r
	627	return 0;\r
	628	}\r
	629	\r
	630	// tmp state\r
	631	struct PicoTmp\r
	632	{\r
633	unsigned short vram[0x8000];\r
634	unsigned short cram[0x40];\r
635	unsigned short vsram[0x40];\r
636	\r
637	//struct PicoMisc m;\r
638	struct PicoVideo video;\r
639	\r
640	struct {\r
641	struct Pico32x p32x;\r
642	unsigned short dram[2][0x20000/2];\r
643	unsigned short pal[0x100];\r
644	} t32x;\r
645	};\r
646	\r
647	// returns data ptr to free() or PicoTmpStateRestore()\r
648	void *PicoTmpStateSave(void)\r
649	{\r
650	// gfx only for now\r
651	struct PicoTmp t = malloc(sizeof(t));\r
652	if (t == NULL)\r
653	return NULL;\r
654	\r
655	memcpy(t->vram, Pico.vram, sizeof(Pico.vram));\r
656	memcpy(t->cram, Pico.cram, sizeof(Pico.cram));\r
657	memcpy(t->vsram, Pico.vsram, sizeof(Pico.vsram));\r
658	memcpy(&t->video, &Pico.video, sizeof(Pico.video));\r
659	\r
f3a57b2d	660	#ifndef NO_32X\r
b4db550e	661	if (PicoAHW & PAHW_32X) {\r
	662	memcpy(&t->t32x.p32x, &Pico32x, sizeof(Pico32x));\r
	663	memcpy(t->t32x.dram, Pico32xMem->dram, sizeof(Pico32xMem->dram));\r
	664	memcpy(t->t32x.pal, Pico32xMem->pal, sizeof(Pico32xMem->pal));\r
	665	}\r
f3a57b2d	666	#endif\r
b4db550e	667	\r
	668	return t;\r
	669	}\r
	670	\r
	671	void PicoTmpStateRestore(void *data)\r
	672	{\r
	673	struct PicoTmp *t = data;\r
	674	if (t == NULL)\r
	675	return;\r
	676	\r
	677	memcpy(Pico.vram, t->vram, sizeof(Pico.vram));\r
	678	memcpy(Pico.cram, t->cram, sizeof(Pico.cram));\r
	679	memcpy(Pico.vsram, t->vsram, sizeof(Pico.vsram));\r
	680	memcpy(&Pico.video, &t->video, sizeof(Pico.video));\r
	681	Pico.m.dirtyPal = 1;\r
	682	\r
f3a57b2d	683	#ifndef NO_32X\r
b4db550e	684	if (PicoAHW & PAHW_32X) {\r
	685	memcpy(&Pico32x, &t->t32x.p32x, sizeof(Pico32x));\r
	686	memcpy(Pico32xMem->dram, t->t32x.dram, sizeof(Pico32xMem->dram));\r
	687	memcpy(Pico32xMem->pal, t->t32x.pal, sizeof(Pico32xMem->pal));\r
	688	Pico32x.dirty_pal = 1;\r
	689	}\r
f3a57b2d	690	#endif\r
b4db550e	691	}\r
	692	\r
	693	// vim:shiftwidth=2:expandtab\r