[picodrive.git] / pico / state.c

// (c) Copyright 2004 Dave, All rights reserved.\r
// (c) Copyright 2006-2010 notaz, All rights reserved.\r
// Free for non-commercial use.\r
\r
// For commercial use, separate licencing terms must be obtained.\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
  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
\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
      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
\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
      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
\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
  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
\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
  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
}\r
\r
// vim:shiftwidth=2:expandtab\r
Commit	Line	Data
b4db550e	1	// (c) Copyright 2004 Dave, All rights reserved.\r
	2	// (c) Copyright 2006-2010 notaz, All rights reserved.\r
	3	// Free for non-commercial use.\r
	4	\r
	5	// For commercial use, separate licencing terms must be obtained.\r
	6	\r
	7	\r
	8	#include "pico_int.h"\r
	9	#include <zlib/zlib.h>\r
	10	\r
	11	#include "../cpu/sh2/sh2.h"\r
	12	#include "sound/ym2612.h"\r
	13	\r
	14	// sn76496\r
	15	extern int *sn76496_regs;\r
	16	\r
	17	typedef size_t (arearw)(void p, size_t _size, size_t _n, void file);\r
	18	typedef size_t (areaeof)(void *file);\r
	19	typedef int (areaseek)(void *file, long offset, int whence);\r
	20	typedef int (areaclose)(void *file);\r
	21	\r
	22	static arearw *areaRead;\r
	23	static arearw *areaWrite;\r
	24	static areaeof *areaEof;\r
	25	static areaseek *areaSeek;\r
	26	static areaclose *areaClose;\r
	27	\r
	28	carthw_state_chunk *carthw_chunks;\r
	29	void (PicoStateProgressCB)(const char str);\r
	30	void (*PicoLoadStateHook)(void);\r
	31	\r
	32	\r
	33	/* I/O functions */\r
	34	static size_t gzRead2(void p, size_t _size, size_t _n, void file)\r
	35	{\r
	36	return gzread(file, p, _size * _n);\r
	37	}\r
	38	\r
	39	static size_t gzWrite2(void p, size_t _size, size_t _n, void file)\r
	40	{\r
	41	return gzwrite(file, p, _size * _n);\r
	42	}\r
	43	\r
	44	static void set_cbs(int gz)\r
	45	{\r
	46	if (gz) {\r
	47	areaRead = gzRead2;\r
	48	areaWrite = gzWrite2;\r
	49	areaEof = (areaeof *) gzeof;\r
	50	areaSeek = (areaseek *) gzseek;\r
	51	areaClose = (areaclose *) gzclose;\r
	52	} else {\r
	53	areaRead = (arearw *) fread;\r
	54	areaWrite = (arearw *) fwrite;\r
	55	areaEof = (areaeof *) feof;\r
	56	areaSeek = (areaseek *) fseek;\r
	57	areaClose = (areaclose *) fclose;\r
	58	}\r
	59	}\r
	60	\r
	61	static void open_save_file(const char fname, int is_save)\r
	62	{\r
	63	int len = strlen(fname);\r
	64	void *afile = NULL;\r
65	\r
66	if (len > 3 && strcmp(fname + len - 3, ".gz") == 0)\r
67	{\r
68	if ( (afile = gzopen(fname, is_save ? "wb" : "rb")) ) {\r
69	set_cbs(1);\r
70	if (is_save)\r
71	gzsetparams(afile, 9, Z_DEFAULT_STRATEGY);\r
72	}\r
73	}\r
74	else\r
75	{\r
76	if ( (afile = fopen(fname, is_save ? "wb" : "rb")) ) {\r
77	set_cbs(0);\r
78	}\r
79	}\r
80	\r
81	return afile;\r
82	}\r
83	\r
84	// legacy savestate loading\r
85	#define SCANP(f, x) areaRead(&Pico.x, sizeof(Pico.x), 1, f)\r
86	\r
87	static int state_load_legacy(void *file)\r
88	{\r
89	unsigned char head[32];\r
90	unsigned char cpu[0x60];\r
91	unsigned char cpu_z80[Z80_STATE_SIZE];\r
92	void *ym2612_regs;\r
93	int ok;\r
94	\r
95	memset(&cpu,0,sizeof(cpu));\r
96	memset(&cpu_z80,0,sizeof(cpu_z80));\r
97	\r
98	memset(head, 0, sizeof(head));\r
99	areaRead(head, sizeof(head), 1, file);\r
100	if (strcmp((char *)head, "Pico") != 0)\r
101	return -1;\r
102	\r
103	elprintf(EL_STATUS, "legacy savestate");\r
104	\r
105	// Scan all the memory areas:\r
106	SCANP(file, ram);\r
107	SCANP(file, vram);\r
108	SCANP(file, zram);\r
109	SCANP(file, cram);\r
110	SCANP(file, vsram);\r
111	\r
112	// Pack, scan and unpack the cpu data:\r
113	areaRead(cpu, sizeof(cpu), 1, file);\r
114	SekUnpackCpu(cpu, 0);\r
115	\r
116	SCANP(file, m);\r
117	SCANP(file, video);\r
118	\r
119	ok = areaRead(cpu_z80, sizeof(cpu_z80), 1, file) == sizeof(cpu_z80);\r
120	// do not unpack if we fail to load z80 state\r
121	if (!ok) z80_reset();\r
122	else z80_unpack(cpu_z80);\r
123	\r
124	ym2612_regs = YM2612GetRegs();\r
125	areaRead(sn76496_regs, 28*4, 1, file);\r
126	areaRead(ym2612_regs, 0x200+4, 1, file);\r
127	ym2612_unpack_state();\r
128	\r
129	return 0;\r
130	}\r
131	\r
132	// ---------------------------------------------------------------------------\r
133	\r
134	typedef enum {\r
135	CHUNK_M68K = 1,\r
136	CHUNK_RAM,\r
137	CHUNK_VRAM,\r
138	CHUNK_ZRAM,\r
139	CHUNK_CRAM, // 5\r
140	CHUNK_VSRAM,\r
141	CHUNK_MISC,\r
142	CHUNK_VIDEO,\r
143	CHUNK_Z80,\r
144	CHUNK_PSG, // 10\r
145	CHUNK_FM,\r
146	// CD stuff\r
147	CHUNK_S68K,\r
148	CHUNK_PRG_RAM,\r
149	CHUNK_WORD_RAM,\r
150	CHUNK_PCM_RAM, // 15\r
151	CHUNK_BRAM,\r
152	CHUNK_GA_REGS,\r
153	CHUNK_PCM,\r
154	CHUNK_CDC,\r
155	CHUNK_CDD, // 20\r
156	CHUNK_SCD,\r
157	CHUNK_RC,\r
158	CHUNK_MISC_CD,\r
159	//\r
160	CHUNK_IOPORTS, // versions < 1.70 did not save that..\r
161	CHUNK_SMS, // 25\r
162	// 32x\r
163	CHUNK_MSH2,\r
164	CHUNK_MSH2_DATA,\r
165	CHUNK_MSH2_PERI,\r
166	CHUNK_SSH2,\r
167	CHUNK_SSH2_DATA, // 30\r
168	CHUNK_SSH2_PERI,\r
169	CHUNK_32XSYS,\r
170	CHUNK_M68K_BIOS,\r
171	CHUNK_MSH2_BIOS,\r
172	CHUNK_SSH2_BIOS, // 35\r
173	CHUNK_SDRAM,\r
174	CHUNK_DRAM,\r
175	CHUNK_32XPAL,\r
176	//\r
177	CHUNK_DEFAULT_COUNT,\r
178	CHUNK_CARTHW_ = CHUNK_CARTHW, // defined in PicoInt\r
179	} chunk_name_e;\r
180	\r
181	static 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
224	};\r
225	\r
226	static int write_chunk(chunk_name_e name, int len, void data, void file)\r
227	{\r
228	size_t bwritten = 0;\r
229	bwritten += areaWrite(&name, 1, 1, file);\r
230	bwritten += areaWrite(&len, 1, 4, file);\r
231	bwritten += areaWrite(data, 1, len, file);\r
232	\r
233	return (bwritten == len + 4 + 1);\r
234	}\r
235	\r
236	#define CHECKED_WRITE(name,len,data) { \\r
237	if (PicoStateProgressCB && name < CHUNK_DEFAULT_COUNT) { \\r
238	strncpy(sbuff + 9, chunk_names[name], sizeof(sbuff) - 9); \\r
239	PicoStateProgressCB(sbuff); \\r
240	} \\r
241	if (!write_chunk(name, len, data, file)) return 1; \\r
242	}\r
243	\r
244	#define CHECKED_WRITE_BUFF(name,buff) { \\r
245	if (PicoStateProgressCB && name < CHUNK_DEFAULT_COUNT) { \\r
246	strncpy(sbuff + 9, chunk_names[name], sizeof(sbuff) - 9); \\r
247	PicoStateProgressCB(sbuff); \\r
248	} \\r
249	if (!write_chunk(name, sizeof(buff), &buff, file)) return 1; \\r
250	}\r
251	\r
252	static int state_save(void *file)\r
253	{\r
254	char sbuff[32] = "Saving.. ";\r
255	unsigned char buff[0x60], buff_z80[Z80_STATE_SIZE];\r
256	void *ym2612_regs = YM2612GetRegs();\r
257	int ver = 0x0170; // not really used..\r
258	\r
259	areaWrite("PicoSEXT", 1, 8, file);\r
260	areaWrite(&ver, 1, 4, file);\r
261	\r
262	if (!(PicoAHW & PAHW_SMS)) {\r
263	memset(buff, 0, sizeof(buff));\r
264	SekPackCpu(buff, 0);\r
265	CHECKED_WRITE_BUFF(CHUNK_M68K, buff);\r
266	CHECKED_WRITE_BUFF(CHUNK_RAM, Pico.ram);\r
267	CHECKED_WRITE_BUFF(CHUNK_VSRAM, Pico.vsram);\r
268	CHECKED_WRITE_BUFF(CHUNK_IOPORTS, Pico.ioports);\r
269	ym2612_pack_state();\r
270	CHECKED_WRITE(CHUNK_FM, 0x200+4, ym2612_regs);\r
271	}\r
272	else {\r
273	CHECKED_WRITE_BUFF(CHUNK_SMS, Pico.ms);\r
274	}\r
275	\r
276	CHECKED_WRITE_BUFF(CHUNK_VRAM, Pico.vram);\r
277	CHECKED_WRITE_BUFF(CHUNK_ZRAM, Pico.zram);\r
278	CHECKED_WRITE_BUFF(CHUNK_CRAM, Pico.cram);\r
279	CHECKED_WRITE_BUFF(CHUNK_MISC, Pico.m);\r
280	CHECKED_WRITE_BUFF(CHUNK_VIDEO, Pico.video);\r
281	\r
282	z80_pack(buff_z80);\r
283	CHECKED_WRITE_BUFF(CHUNK_Z80, buff_z80);\r
284	CHECKED_WRITE(CHUNK_PSG, 28*4, sn76496_regs);\r
285	\r
286	if (PicoAHW & PAHW_MCD)\r
287	{\r
288	memset(buff, 0, sizeof(buff));\r
289	SekPackCpu(buff, 1);\r
290	if (Pico_mcd->s68k_regs[3] & 4) // 1M mode?\r
291	wram_1M_to_2M(Pico_mcd->word_ram2M);\r
292	Pico_mcd->m.hint_vector = (unsigned short )(Pico_mcd->bios + 0x72);\r
293	\r
294	CHECKED_WRITE_BUFF(CHUNK_S68K, buff);\r
295	CHECKED_WRITE_BUFF(CHUNK_PRG_RAM, Pico_mcd->prg_ram);\r
296	CHECKED_WRITE_BUFF(CHUNK_WORD_RAM, Pico_mcd->word_ram2M); // in 2M format\r
297	CHECKED_WRITE_BUFF(CHUNK_PCM_RAM, Pico_mcd->pcm_ram);\r
298	CHECKED_WRITE_BUFF(CHUNK_BRAM, Pico_mcd->bram);\r
299	CHECKED_WRITE_BUFF(CHUNK_GA_REGS, Pico_mcd->s68k_regs); // GA regs, not CPU regs\r
300	CHECKED_WRITE_BUFF(CHUNK_PCM, Pico_mcd->pcm);\r
301	CHECKED_WRITE_BUFF(CHUNK_CDD, Pico_mcd->cdd);\r
302	CHECKED_WRITE_BUFF(CHUNK_CDC, Pico_mcd->cdc);\r
303	CHECKED_WRITE_BUFF(CHUNK_SCD, Pico_mcd->scd);\r
304	CHECKED_WRITE_BUFF(CHUNK_RC, Pico_mcd->rot_comp);\r
305	CHECKED_WRITE_BUFF(CHUNK_MISC_CD, Pico_mcd->m);\r
306	\r
307	if (Pico_mcd->s68k_regs[3] & 4) // convert back\r
308	wram_2M_to_1M(Pico_mcd->word_ram2M);\r
309	}\r
310	\r
311	if (PicoAHW & PAHW_32X)\r
312	{\r
313	unsigned char cpubuff[SH2_STATE_SIZE];\r
314	\r
315	memset(cpubuff, 0, sizeof(cpubuff));\r
316	\r
317	sh2_pack(&sh2s[0], cpubuff);\r
318	CHECKED_WRITE_BUFF(CHUNK_MSH2, cpubuff);\r
319	CHECKED_WRITE_BUFF(CHUNK_MSH2_DATA, Pico32xMem->data_array[0]);\r
320	CHECKED_WRITE_BUFF(CHUNK_MSH2_PERI, Pico32xMem->sh2_peri_regs[0]);\r
321	\r
322	sh2_pack(&sh2s[1], cpubuff);\r
323	CHECKED_WRITE_BUFF(CHUNK_SSH2, cpubuff);\r
324	CHECKED_WRITE_BUFF(CHUNK_SSH2_DATA, Pico32xMem->data_array[1]);\r
325	CHECKED_WRITE_BUFF(CHUNK_SSH2_PERI, Pico32xMem->sh2_peri_regs[1]);\r
326	\r
327	CHECKED_WRITE_BUFF(CHUNK_32XSYS, Pico32x);\r
328	CHECKED_WRITE_BUFF(CHUNK_M68K_BIOS, Pico32xMem->m68k_rom);\r
329	CHECKED_WRITE_BUFF(CHUNK_MSH2_BIOS, Pico32xMem->sh2_rom_m);\r
330	CHECKED_WRITE_BUFF(CHUNK_SSH2_BIOS, Pico32xMem->sh2_rom_s);\r
331	CHECKED_WRITE_BUFF(CHUNK_SDRAM, Pico32xMem->sdram);\r
332	CHECKED_WRITE_BUFF(CHUNK_DRAM, Pico32xMem->dram);\r
333	CHECKED_WRITE_BUFF(CHUNK_32XPAL, Pico32xMem->pal);\r
334	}\r
335	\r
336	if (carthw_chunks != NULL)\r
337	{\r
338	carthw_state_chunk *chwc;\r
339	if (PicoStateProgressCB)\r
340	PicoStateProgressCB("Saving.. cart hw state");\r
341	for (chwc = carthw_chunks; chwc->ptr != NULL; chwc++)\r
342	CHECKED_WRITE(chwc->chunk, chwc->size, chwc->ptr);\r
343	}\r
344	\r
345	return 0;\r
346	}\r
347	\r
348	static int g_read_offs = 0;\r
349	\r
350	#define R_ERROR_RETURN(error) \\r
351	{ \\r
352	elprintf(EL_STATUS, "load_state @ %x: " error, g_read_offs); \\r
353	return 1; \\r
354	}\r
355	\r
356	// when is eof really set?\r
357	#define CHECKED_READ(len,data) { \\r
358	if (areaRead(data, 1, len, file) != len) { \\r
359	if (len == 1 && areaEof(file)) goto readend; \\r
360	R_ERROR_RETURN("areaRead: premature EOF\n"); \\r
361	return 1; \\r
362	} \\r
363	g_read_offs += len; \\r
364	}\r
365	\r
366	#define CHECKED_READ2(len2,data) { \\r
367	if (len2 != len) { \\r
368	elprintf(EL_STATUS, "unexpected len %i, wanted %i (%s)", len, len2, #len2); \\r
369	if (len > len2) R_ERROR_RETURN("failed."); \\r
370	/* else read anyway and hope for the best.. */ \\r
371	} \\r
372	CHECKED_READ(len, data); \\r
373	}\r
374	\r
375	#define CHECKED_READ_BUFF(buff) CHECKED_READ2(sizeof(buff), &buff);\r
376	\r
377	static int state_load(void *file)\r
378	{\r
379	unsigned char buff_m68k[0x60], buff_s68k[0x60];\r
380	unsigned char buff_z80[Z80_STATE_SIZE];\r
381	unsigned char buff_sh2[SH2_STATE_SIZE];\r
382	unsigned char chunk;\r
383	void *ym2612_regs;\r
384	char header[8];\r
385	int ver, len;\r
386	\r
03065bb6	387	memset(buff_m68k, 0, sizeof(buff_m68k));\r
	388	memset(buff_s68k, 0, sizeof(buff_s68k));\r
	389	memset(buff_z80, 0, sizeof(buff_z80));\r
	390	\r
b4db550e	391	g_read_offs = 0;\r
	392	CHECKED_READ(8, header);\r
	393	if (strncmp(header, "PicoSMCD", 8) && strncmp(header, "PicoSEXT", 8))\r
	394	R_ERROR_RETURN("bad header");\r
	395	CHECKED_READ(4, &ver);\r
	396	\r
	397	while (!areaEof(file))\r
	398	{\r
	399	CHECKED_READ(1, &chunk);\r
	400	CHECKED_READ(4, &len);\r
	401	if (len < 0 \|\| len > 1024*512) R_ERROR_RETURN("bad length");\r
	402	if (CHUNK_S68K <= chunk && chunk <= CHUNK_MISC_CD && !(PicoAHW & PAHW_MCD))\r
	403	R_ERROR_RETURN("cd chunk in non CD state?");\r
	404	if (CHUNK_MSH2 <= chunk && chunk <= CHUNK_32XPAL && !(PicoAHW & PAHW_32X))\r
	405	R_ERROR_RETURN("32x chunk in non 32x state?");\r
	406	\r
	407	switch (chunk)\r
	408	{\r
	409	case CHUNK_M68K:\r
	410	CHECKED_READ_BUFF(buff_m68k);\r
	411	break;\r
	412	\r
	413	case CHUNK_Z80:\r
	414	CHECKED_READ_BUFF(buff_z80);\r
b4db550e	415	break;\r
	416	\r
	417	case CHUNK_RAM: CHECKED_READ_BUFF(Pico.ram); break;\r
	418	case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); break;\r
	419	case CHUNK_ZRAM: CHECKED_READ_BUFF(Pico.zram); break;\r
	420	case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); break;\r
	421	case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); break;\r
	422	case CHUNK_MISC: CHECKED_READ_BUFF(Pico.m); break;\r
	423	case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); break;\r
	424	case CHUNK_IOPORTS: CHECKED_READ_BUFF(Pico.ioports); break;\r
	425	case CHUNK_PSG: CHECKED_READ2(28*4, sn76496_regs); break;\r
	426	case CHUNK_FM:\r
	427	ym2612_regs = YM2612GetRegs();\r
	428	CHECKED_READ2(0x200+4, ym2612_regs);\r
	429	ym2612_unpack_state();\r
	430	break;\r
	431	\r
	432	case CHUNK_SMS:\r
	433	CHECKED_READ_BUFF(Pico.ms);\r
	434	break;\r
	435	\r
	436	// cd stuff\r
	437	case CHUNK_S68K:\r
	438	CHECKED_READ_BUFF(buff_s68k);\r
	439	break;\r
	440	\r
	441	case CHUNK_PRG_RAM: CHECKED_READ_BUFF(Pico_mcd->prg_ram); break;\r
	442	case CHUNK_WORD_RAM: CHECKED_READ_BUFF(Pico_mcd->word_ram2M); break;\r
	443	case CHUNK_PCM_RAM: CHECKED_READ_BUFF(Pico_mcd->pcm_ram); break;\r
	444	case CHUNK_BRAM: CHECKED_READ_BUFF(Pico_mcd->bram); break;\r
	445	case CHUNK_GA_REGS: CHECKED_READ_BUFF(Pico_mcd->s68k_regs); break;\r
	446	case CHUNK_PCM: CHECKED_READ_BUFF(Pico_mcd->pcm); break;\r
	447	case CHUNK_CDD: CHECKED_READ_BUFF(Pico_mcd->cdd); break;\r
	448	case CHUNK_CDC: CHECKED_READ_BUFF(Pico_mcd->cdc); break;\r
	449	case CHUNK_SCD: CHECKED_READ_BUFF(Pico_mcd->scd); break;\r
	450	case CHUNK_RC: CHECKED_READ_BUFF(Pico_mcd->rot_comp); break;\r
	451	case CHUNK_MISC_CD: CHECKED_READ_BUFF(Pico_mcd->m); break;\r
	452	\r
	453	// 32x stuff\r
	454	case CHUNK_MSH2:\r
	455	CHECKED_READ_BUFF(buff_sh2);\r
	456	sh2_unpack(&sh2s[0], buff_sh2);\r
	457	break;\r
	458	\r
	459	case CHUNK_SSH2:\r
	460	CHECKED_READ_BUFF(buff_sh2);\r
	461	sh2_unpack(&sh2s[1], buff_sh2);\r
	462	break;\r
	463	\r
	464	case CHUNK_MSH2_DATA: CHECKED_READ_BUFF(Pico32xMem->data_array[0]); break;\r
	465	case CHUNK_MSH2_PERI: CHECKED_READ_BUFF(Pico32xMem->sh2_peri_regs[0]); break;\r
	466	case CHUNK_SSH2_DATA: CHECKED_READ_BUFF(Pico32xMem->data_array[1]); break;\r
	467	case CHUNK_SSH2_PERI: CHECKED_READ_BUFF(Pico32xMem->sh2_peri_regs[1]); break;\r
	468	case CHUNK_32XSYS: CHECKED_READ_BUFF(Pico32x); break;\r
	469	case CHUNK_M68K_BIOS: CHECKED_READ_BUFF(Pico32xMem->m68k_rom); break;\r
	470	case CHUNK_MSH2_BIOS: CHECKED_READ_BUFF(Pico32xMem->sh2_rom_m); break;\r
	471	case CHUNK_SSH2_BIOS: CHECKED_READ_BUFF(Pico32xMem->sh2_rom_s); break;\r
	472	case CHUNK_SDRAM: CHECKED_READ_BUFF(Pico32xMem->sdram); break;\r
	473	case CHUNK_DRAM: CHECKED_READ_BUFF(Pico32xMem->dram); break;\r
	474	case CHUNK_32XPAL: CHECKED_READ_BUFF(Pico32xMem->pal); break;\r
	475	\r
	476	default:\r
	477	if (carthw_chunks != NULL)\r
	478	{\r
479	carthw_state_chunk *chwc;\r
480	for (chwc = carthw_chunks; chwc->ptr != NULL; chwc++) {\r
481	if (chwc->chunk == chunk) {\r
482	CHECKED_READ2(chwc->size, chwc->ptr);\r
483	goto breakswitch;\r
484	}\r
485	}\r
486	}\r
487	elprintf(EL_STATUS, "load_state: skipping unknown chunk %i of size %i", chunk, len);\r
488	areaSeek(file, len, SEEK_CUR);\r
489	break;\r
490	}\r
491	breakswitch:;\r
492	}\r
493	\r
494	readend:\r
495	if (PicoAHW & PAHW_SMS)\r
496	PicoStateLoadedMS();\r
497	\r
498	if (PicoAHW & PAHW_MCD)\r
499	{\r
500	PicoMemStateLoaded();\r
501	\r
502	if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))\r
503	cdda_start_play();\r
504	\r
b4db550e	505	SekUnpackCpu(buff_s68k, 1);\r
	506	}\r
	507	\r
03065bb6	508	// must unpack 68k and z80 after banks are set up\r
b4db550e	509	if (!(PicoAHW & PAHW_SMS))\r
	510	SekUnpackCpu(buff_m68k, 0);\r
	511	\r
03065bb6	512	z80_unpack(buff_z80);\r
03065bb6	513	\r
b4db550e	514	if (PicoAHW & PAHW_32X)\r
	515	Pico32xStateLoaded();\r
	516	\r
	517	return 0;\r
	518	}\r
	519	\r
	520	static int state_load_gfx(void *file)\r
	521	{\r
	522	int ver, len, found = 0, to_find = 4;\r
	523	char buff[8];\r
	524	\r
	525	if (PicoAHW & PAHW_32X)\r
	526	to_find += 2;\r
	527	\r
	528	g_read_offs = 0;\r
	529	CHECKED_READ(8, buff);\r
	530	if (strncmp((char )buff, "PicoSMCD", 8) && strncmp((char )buff, "PicoSEXT", 8))\r
	531	R_ERROR_RETURN("bad header");\r
	532	CHECKED_READ(4, &ver);\r
	533	\r
	534	while (!areaEof(file) && found < to_find)\r
	535	{\r
	536	CHECKED_READ(1, buff);\r
	537	CHECKED_READ(4, &len);\r
	538	if (len < 0 \|\| len > 1024*512) R_ERROR_RETURN("bad length");\r
	539	if (buff[0] > CHUNK_FM && buff[0] <= CHUNK_MISC_CD && !(PicoAHW & PAHW_MCD))\r
	540	R_ERROR_RETURN("cd chunk in non CD state?");\r
	541	\r
	542	switch (buff[0])\r
	543	{\r
	544	case CHUNK_VRAM: CHECKED_READ_BUFF(Pico.vram); found++; break;\r
	545	case CHUNK_CRAM: CHECKED_READ_BUFF(Pico.cram); found++; break;\r
	546	case CHUNK_VSRAM: CHECKED_READ_BUFF(Pico.vsram); found++; break;\r
	547	case CHUNK_VIDEO: CHECKED_READ_BUFF(Pico.video); found++; break;\r
	548	\r
	549	case CHUNK_DRAM:\r
	550	if (Pico32xMem != NULL)\r
	551	CHECKED_READ_BUFF(Pico32xMem->dram);\r
	552	break;\r
	553	\r
	554	case CHUNK_32XPAL:\r
	555	if (Pico32xMem != NULL)\r
	556	CHECKED_READ_BUFF(Pico32xMem->pal);\r
	557	Pico32x.dirty_pal = 1;\r
	558	break;\r
	559	\r
	560	case CHUNK_32XSYS:\r
	561	CHECKED_READ_BUFF(Pico32x);\r
	562	break;\r
	563	\r
	564	default:\r
	565	areaSeek(file, len, SEEK_CUR);\r
	566	break;\r
	567	}\r
	568	}\r
	569	\r
	570	readend:\r
	571	return 0;\r
	572	}\r
	573	\r
	574	int PicoState(const char *fname, int is_save)\r
	575	{\r
	576	void *afile = NULL;\r
	577	int ret;\r
578	\r
579	afile = open_save_file(fname, is_save);\r
580	if (afile == NULL)\r
581	return -1;\r
582	\r
583	if (is_save)\r
584	ret = state_save(afile);\r
585	else {\r
586	ret = state_load(afile);\r
587	if (ret != 0) {\r
588	areaSeek(afile, 0, SEEK_SET);\r
589	ret = state_load_legacy(afile);\r
590	}\r
591	\r
592	if (PicoLoadStateHook != NULL)\r
593	PicoLoadStateHook();\r
594	Pico.m.dirtyPal = 1;\r
595	}\r
596	\r
597	areaClose(afile);\r
598	return ret;\r
599	}\r
600	\r
601	int PicoStateLoadGfx(const char *fname)\r
602	{\r
603	void *afile;\r
604	int ret;\r
605	\r
606	afile = open_save_file(fname, 0);\r
607	if (afile == NULL)\r
608	return -1;\r
609	\r
610	ret = state_load_gfx(afile);\r
611	if (ret != 0) {\r
612	// assume legacy\r
613	areaSeek(afile, 0x10020, SEEK_SET); // skip header and RAM\r
614	areaRead(Pico.vram, 1, sizeof(Pico.vram), afile);\r
615	areaSeek(afile, 0x2000, SEEK_CUR);\r
616	areaRead(Pico.cram, 1, sizeof(Pico.cram), afile);\r
617	areaRead(Pico.vsram, 1, sizeof(Pico.vsram), afile);\r
618	areaSeek(afile, 0x221a0, SEEK_SET);\r
619	areaRead(&Pico.video, 1, sizeof(Pico.video), afile);\r
620	}\r
621	areaClose(afile);\r
622	return 0;\r
623	}\r
624	\r
625	// tmp state\r
626	struct PicoTmp\r
627	{\r
628	unsigned short vram[0x8000];\r
629	unsigned short cram[0x40];\r
630	unsigned short vsram[0x40];\r
631	\r
632	//struct PicoMisc m;\r
633	struct PicoVideo video;\r
634	\r
635	struct {\r
636	struct Pico32x p32x;\r
637	unsigned short dram[2][0x20000/2];\r
638	unsigned short pal[0x100];\r
639	} t32x;\r
640	};\r
641	\r
642	// returns data ptr to free() or PicoTmpStateRestore()\r
643	void *PicoTmpStateSave(void)\r
644	{\r
645	// gfx only for now\r
646	struct PicoTmp t = malloc(sizeof(t));\r
647	if (t == NULL)\r
648	return NULL;\r
649	\r
650	memcpy(t->vram, Pico.vram, sizeof(Pico.vram));\r
651	memcpy(t->cram, Pico.cram, sizeof(Pico.cram));\r
652	memcpy(t->vsram, Pico.vsram, sizeof(Pico.vsram));\r
653	memcpy(&t->video, &Pico.video, sizeof(Pico.video));\r
654	\r
655	if (PicoAHW & PAHW_32X) {\r
656	memcpy(&t->t32x.p32x, &Pico32x, sizeof(Pico32x));\r
657	memcpy(t->t32x.dram, Pico32xMem->dram, sizeof(Pico32xMem->dram));\r
658	memcpy(t->t32x.pal, Pico32xMem->pal, sizeof(Pico32xMem->pal));\r
659	}\r
660	\r
661	return t;\r
662	}\r
663	\r
664	void PicoTmpStateRestore(void *data)\r
665	{\r
666	struct PicoTmp *t = data;\r
667	if (t == NULL)\r
668	return;\r
669	\r
670	memcpy(Pico.vram, t->vram, sizeof(Pico.vram));\r
671	memcpy(Pico.cram, t->cram, sizeof(Pico.cram));\r
672	memcpy(Pico.vsram, t->vsram, sizeof(Pico.vsram));\r
673	memcpy(&Pico.video, &t->video, sizeof(Pico.video));\r
674	Pico.m.dirtyPal = 1;\r
675	\r
676	if (PicoAHW & PAHW_32X) {\r
677	memcpy(&Pico32x, &t->t32x.p32x, sizeof(Pico32x));\r
678	memcpy(Pico32xMem->dram, t->t32x.dram, sizeof(Pico32xMem->dram));\r
679	memcpy(Pico32xMem->pal, t->t32x.pal, sizeof(Pico32xMem->pal));\r
680	Pico32x.dirty_pal = 1;\r
681	}\r
682	}\r
683	\r
684	// vim:shiftwidth=2:expandtab\r