a_dinosaur/ZSNES
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Init state ported and set properly.

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This commit is contained in:
n-a-c-h
2005-01-31 02:37:38 +00:00
parent 2aa4eec761
commit 7be1694a17
4 changed files with 98 additions and 92 deletions
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134
zsnes/src/cpu/zstate.c
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@@ -68,30 +68,58 @@ extern short Op28X, Op0CA, Op02FX, Op0AVS, Op06X, Op01m, Op0DX, Op03F, Op14Zr;
extern short Op0EH;
extern signed short Op10Coefficient;
static void copy_snes_data(unsigned char **buffer, void (*copy_func)(unsigned char **, void *, size_t))
{
//65816 status, etc.
copy_func(buffer, &curcyc, PH65816regsize);
//SPC Timers
copy_func(buffer, &cycpbl, 2*4);
//SNES PPU Register status
copy_func(buffer, &sndrot, 3019);
}
static void copy_spc_data(unsigned char **buffer, void (*copy_func)(unsigned char **, void *, size_t))
{
//SPC stuff, DSP stuff
copy_func(buffer, spcRam, PHspcsave);
copy_func(buffer, BRRBuffer, PHdspsave);
copy_func(buffer, DSPMem, sizeof(DSPMem));
}
static void copy_extra_data(unsigned char **buffer, void (*copy_func)(unsigned char **, void *, size_t))
{
copy_func(buffer, &soundcycleft, 33);
copy_func(buffer, &spc700read, 10*4);
copy_func(buffer, &timer2upd, 1*4);
copy_func(buffer, &xa, 14*4);
copy_func(buffer, &spcnumread, 4);
copy_func(buffer, &spchalted, 4);
copy_func(buffer, &opcd, 6*4);
copy_func(buffer, &HIRQCycNext, 5);
copy_func(buffer, &oamaddr, 14*4);
copy_func(buffer, &prevoamptr, 1);
copy_func(buffer, &ReadHead, 1*4);
}
static size_t load_save_size;
static unsigned int zst_version;
//For compatibility with old save states (pre v1.43)
#define loading_old_state (file && read && (zst_version == 60))
#define loading_state_no_sram (file && read && !SRAMState)
#define loading_old_state (!buffer && read && (zst_version == 60))
#define loading_state_no_sram (!buffer && read && !SRAMState)
void copy_state_data(unsigned char *buffer, void (*copy_func)(unsigned char **, void *, size_t), bool file, bool read)
void copy_state_data(unsigned char *buffer, void (*copy_func)(unsigned char **, void *, size_t), bool read)
{
//65816 status, etc.
copy_func(&buffer, &curcyc, PH65816regsize);
//SPC Timers
copy_func(&buffer, &cycpbl, 2*4);
//SNES PPU Register status
copy_func(&buffer, &sndrot, 3019);
copy_snes_data(&buffer, copy_func);
//WRAM (128k), VRAM (64k)
copy_func(&buffer, wramdata, 8192*16);
copy_func(&buffer, vram, 4096*16);
copy_func(&buffer, vram, 4096*16);
if (spcon) //SPC stuff, DSP stuff
if (spcon)
{
copy_func(&buffer, spcRam, PHspcsave);
copy_func(&buffer, BRRBuffer, PHdspsave);
copy_func(&buffer, DSPMem, sizeof(DSPMem));
copy_spc_data(&buffer, copy_func);
}
if (C4Enable)
@@ -143,7 +171,7 @@ void copy_state_data(unsigned char *buffer, void (*copy_func)(unsigned char **,
{
copy_func(&buffer, setaramdata, 256*16);
//Todo: save the SetaCmdEnable? For completeness we should do it
//Todo: copy the SetaCmdEnable? For completeness we should do it
//but currently we ignore it anyway.
}
@@ -153,34 +181,22 @@ void copy_state_data(unsigned char *buffer, void (*copy_func)(unsigned char **,
copy_func(&buffer, &SPCMultA, PHnum2writespc7110reg);
}
if (loading_old_state)
if (!loading_old_state)
{
return;
}
copy_func(&buffer, &soundcycleft, 33);
copy_func(&buffer, &spc700read, 10*4);
copy_func(&buffer, &timer2upd, 1*4);
copy_func(&buffer, &xa, 14*4);
copy_func(&buffer, &spcnumread, 4);
copy_func(&buffer, &spchalted, 4);
copy_func(&buffer, &opcd, 6*4);
copy_func(&buffer, &HIRQCycNext, 5);
copy_func(&buffer, &oamaddr, 14*4);
copy_func(&buffer, &prevoamptr, 1);
copy_func(&buffer, &ReadHead, 1*4);
if (loading_state_no_sram)
{
copy_func(&buffer, sram, ramsize);
}
copy_extra_data(&buffer, copy_func);
if (!file)
{
copy_func(&buffer, &tempesi, 4);
copy_func(&buffer, &tempedi, 4);
copy_func(&buffer, &tempedx, 4);
copy_func(&buffer, &tempebp, 4);
if (loading_state_no_sram)
{
copy_func(&buffer, sram, ramsize);
}
if (buffer) //Not to a file, i.e. rewind
{
copy_func(&buffer, &tempesi, 4);
copy_func(&buffer, &tempedi, 4);
copy_func(&buffer, &tempedx, 4);
copy_func(&buffer, &tempebp, 4);
}
}
}
@@ -194,7 +210,7 @@ static void memcpyinc(unsigned char **dest, void *src, size_t len)
void BackupCVFrame()
{
unsigned char *curpos = StateBackup + (CBackupPos << 19) + 1024;
copy_state_data(curpos, memcpyinc, false, false);
copy_state_data(curpos, memcpyinc, false);
}
static void memcpyrinc(unsigned char **src, void *dest, size_t len)
@@ -206,7 +222,35 @@ static void memcpyrinc(unsigned char **src, void *dest, size_t len)
void RestoreCVFrame()
{
unsigned char *curpos = StateBackup + (PBackupPos << 19) + 1024;
copy_state_data(curpos, memcpyrinc, false, true);
copy_state_data(curpos, memcpyrinc, true);
}
extern unsigned int RewindPos, RewindOldPos, RewindTimer;
void InitRewindVars()
{
RewindPos = 0;
RewindOldPos = 0;
RewindTimer = 60*4;
}
//This is used to preserve system load state between loads
static unsigned char BackupSystemBuffer[0x800000]; //Half a megabyte, should be enough for a while
void BackupSystemVars()
{
unsigned char *buffer = BackupSystemBuffer;
copy_snes_data(&buffer, memcpyinc);
copy_spc_data(&buffer, memcpyinc);
copy_extra_data(&buffer, memcpyinc);
}
void RestoreSystemVars()
{
unsigned char *buffer = BackupSystemBuffer;
InitRewindVars();
copy_snes_data(&buffer, memcpyrinc);
copy_spc_data(&buffer, memcpyrinc);
copy_extra_data(&buffer, memcpyrinc);
}
extern unsigned int Bank0datr8[256], Bank0datr16[256], Bank0datw8[256];
@@ -563,7 +607,7 @@ void statesaver()
SaveSA1(); //Convert SA-1 stuff to standard, non displacement format
}
copy_state_data(0, write_save_state_data, true, false);
copy_state_data(0, write_save_state_data, false);
if (SFXEnable)
{
@@ -779,7 +823,7 @@ void stateloader (unsigned char *statename, unsigned char keycheck, unsigned cha
if (zst_version) //Pre v0.60 saves are no longer loaded
{
load_save_size = 0;
copy_state_data(0, read_save_state_data, true, true);
copy_state_data(0, read_save_state_data, true);
Totalbyteloaded += load_save_size;
if (SFXEnable)