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sram bugfix + savestate refactoring
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@744 be3aeb3a-fb24-0410-a615-afba39da0efa
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notaz
parent
d687ef5041
commit
bcc9eda077
6 changed files with 161 additions and 140 deletions
178
pico/area.c
178
pico/area.c
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@ -8,6 +8,7 @@
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#include "pico_int.h"
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#include <zlib/zlib.h>
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// ym2612
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#include "sound/ym2612.h"
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@ -32,16 +33,18 @@ void (*PicoLoadStateHook)(void) = NULL;
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// Scan one variable and callback
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static int ScanVar(void *data,int len,char *name,void *PmovFile,int PmovAction)
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static int ScanVar(void *data,int len,char *name,void *PmovFile,int is_write)
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{
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int ret = 0;
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if ((PmovAction&3)==1) ret = areaWrite(data,1,len,PmovFile);
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if ((PmovAction&3)==2) ret = areaRead (data,1,len,PmovFile);
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if (is_write)
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ret = areaWrite(data,1,len,PmovFile);
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else
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ret = areaRead (data,1,len,PmovFile);
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return (ret != len);
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}
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#define SCAN_VAR(x,y) ScanVar(&x,sizeof(x),y,PmovFile,PmovAction);
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#define SCANP(x) ScanVar(&Pico.x,sizeof(Pico.x),#x,PmovFile,PmovAction);
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#define SCAN_VAR(x,y) ScanVar(&x,sizeof(x),y,PmovFile,is_write);
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#define SCANP(x) ScanVar(&Pico.x,sizeof(Pico.x),#x,PmovFile,is_write);
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// Pack the cpu into a common format:
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PICO_INTERNAL void PicoAreaPackCpu(unsigned char *cpu, int is_sub)
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@ -115,7 +118,7 @@ PICO_INTERNAL void PicoAreaUnpackCpu(unsigned char *cpu, int is_sub)
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}
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// Scan the contents of the virtual machine's memory for saving or loading
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static int PicoAreaScan(int PmovAction,unsigned int ver, void *PmovFile)
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static int PicoAreaScan(int is_write, unsigned int ver, void *PmovFile)
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{
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void *ym2612_regs;
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unsigned char cpu[0x60];
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@ -124,59 +127,57 @@ static int PicoAreaScan(int PmovAction,unsigned int ver, void *PmovFile)
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memset(&cpu,0,sizeof(cpu));
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memset(&cpu_z80,0,sizeof(cpu_z80));
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Pico.m.scanline=0;
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ym2612_regs = YM2612GetRegs();
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if (PmovAction&4)
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{
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Pico.m.scanline=0;
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// Scan all the memory areas:
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SCANP(ram) SCANP(vram) SCANP(zram) SCANP(cram) SCANP(vsram)
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// Scan all the memory areas:
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SCANP(ram) SCANP(vram) SCANP(zram) SCANP(cram) SCANP(vsram)
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// Pack, scan and unpack the cpu data:
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if (is_write)
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PicoAreaPackCpu(cpu, 0);
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SCAN_VAR(cpu,"cpu")
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if (!is_write)
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PicoAreaUnpackCpu(cpu, 0);
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// Pack, scan and unpack the cpu data:
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if((PmovAction&3)==1) PicoAreaPackCpu(cpu, 0);
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//PicoMemInit();
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SCAN_VAR(cpu,"cpu")
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if((PmovAction&3)==2) PicoAreaUnpackCpu(cpu, 0);
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SCAN_VAR(Pico.m ,"misc")
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SCAN_VAR(Pico.video,"video")
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SCAN_VAR(Pico.m ,"misc")
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SCAN_VAR(Pico.video,"video")
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if (PicoOpt&7) {
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if((PmovAction&3)==1) z80_pack(cpu_z80);
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ret = SCAN_VAR(cpu_z80,"cpu_z80")
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// do not unpack if we fail to load z80 state
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if((PmovAction&3)==2) {
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if(ret) z80_reset();
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else z80_unpack(cpu_z80);
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}
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}
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if (PicoOpt&3)
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ScanVar(sn76496_regs,28*4,"SN76496state", PmovFile, PmovAction); // regs and other stuff
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if (PicoOpt&1) {
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if((PmovAction&3)==1) ym2612_pack_state();
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ScanVar(ym2612_regs, 0x200+4, "YM2612state", PmovFile, PmovAction); // regs + addr line
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if((PmovAction&3)==2) ym2612_unpack_state(); // reload YM2612 state from it's regs
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}
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if (is_write)
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z80_pack(cpu_z80);
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ret = SCAN_VAR(cpu_z80,"cpu_z80")
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// do not unpack if we fail to load z80 state
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if (!is_write) {
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if (ret) z80_reset();
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else z80_unpack(cpu_z80);
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}
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ScanVar(sn76496_regs, 28*4, "SN76496state", PmovFile, is_write);
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if (is_write)
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ym2612_pack_state();
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ret = ScanVar(ym2612_regs, 0x200+4, "YM2612state", PmovFile, is_write); // regs + addr line
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if (!is_write && !ret)
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ym2612_unpack_state();
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return 0;
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}
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// ---------------------------------------------------------------------------
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// Helper code to save/load to a file handle
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// XXX: error checking
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// Save or load the state from PmovFile:
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int PmovState(int PmovAction, void *PmovFile)
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static int PmovState(int is_write, void *PmovFile)
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{
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int minimum=0;
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unsigned char head[32];
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if ((PicoAHW & PAHW_MCD) || carthw_chunks != NULL)
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{
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if (PmovAction&1) return PicoCdSaveState(PmovFile);
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if (PmovAction&2) {
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if (is_write)
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return PicoCdSaveState(PmovFile);
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else {
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int ret = PicoCdLoadState(PmovFile);
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if (PicoLoadStateHook) PicoLoadStateHook();
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return ret;
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@ -186,7 +187,6 @@ int PmovState(int PmovAction, void *PmovFile)
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memset(head,0,sizeof(head));
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// Find out minimal compatible version:
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//PicoAreaScan(PmovAction&0xc,&minimum);
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minimum = 0x0021;
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memcpy(head,"Pico",4);
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@ -194,14 +194,106 @@ int PmovState(int PmovAction, void *PmovFile)
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*(unsigned int *)(head+0xc)=minimum;
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// Scan header:
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if (PmovAction&1) areaWrite(head,1,sizeof(head),PmovFile);
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if (PmovAction&2) areaRead (head,1,sizeof(head),PmovFile);
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if (is_write)
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areaWrite(head,1,sizeof(head),PmovFile);
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else
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areaRead (head,1,sizeof(head),PmovFile);
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// Scan memory areas:
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PicoAreaScan(PmovAction, *(unsigned int *)(head+0x8), PmovFile);
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PicoAreaScan(is_write, *(unsigned int *)(head+0x8), PmovFile);
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if ((PmovAction&2) && PicoLoadStateHook) PicoLoadStateHook();
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if (!is_write && PicoLoadStateHook)
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PicoLoadStateHook();
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return 0;
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}
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static size_t gzRead2(void *p, size_t _size, size_t _n, void *file)
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{
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return gzread(file, p, _n);
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}
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static size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)
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{
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return gzwrite(file, p, _n);
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}
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static void set_cbs(int gz)
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{
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if (gz) {
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areaRead = gzRead2;
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areaWrite = gzWrite2;
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areaEof = (areaeof *) gzeof;
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areaSeek = (areaseek *) gzseek;
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areaClose = (areaclose *) gzclose;
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} else {
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areaRead = (arearw *) fread;
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areaWrite = (arearw *) fwrite;
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areaEof = (areaeof *) feof;
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areaSeek = (areaseek *) fseek;
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areaClose = (areaclose *) fclose;
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}
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}
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int PicoState(const char *fname, int is_save)
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{
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void *afile = NULL;
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int ret;
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if (strcmp(fname + strlen(fname) - 3, ".gz") == 0)
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{
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if ( (afile = gzopen(fname, is_save ? "wb" : "rb")) ) {
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set_cbs(1);
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if (is_save)
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gzsetparams(afile, 9, Z_DEFAULT_STRATEGY);
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}
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}
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else
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{
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if ( (afile = fopen(fname, is_save ? "wb" : "rb")) ) {
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set_cbs(0);
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}
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}
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if (afile == NULL)
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return -1;
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ret = PmovState(is_save, afile);
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areaClose(afile);
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if (!is_save)
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Pico.m.dirtyPal=1;
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return ret;
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}
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int PicoStateLoadVDP(const char *fname)
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{
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void *afile = NULL;
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if (strcmp(fname + strlen(fname) - 3, ".gz") == 0)
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{
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if ( (afile = gzopen(fname, "rb")) )
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set_cbs(1);
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}
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else
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{
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if ( (afile = fopen(fname, "rb")) )
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set_cbs(0);
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}
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if (afile == NULL)
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return -1;
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if ((PicoAHW & PAHW_MCD) || carthw_chunks != NULL) {
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PicoCdLoadStateGfx(afile);
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} else {
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areaSeek(afile, 0x10020, SEEK_SET); // skip header and RAM in state file
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areaRead(Pico.vram, 1, sizeof(Pico.vram), afile);
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areaSeek(afile, 0x2000, SEEK_CUR);
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areaRead(Pico.cram, 1, sizeof(Pico.cram), afile);
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areaRead(Pico.vsram, 1, sizeof(Pico.vsram), afile);
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areaSeek(afile, 0x221a0, SEEK_SET);
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areaRead(&Pico.video, 1, sizeof(Pico.video), afile);
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}
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areaClose(afile);
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return 0;
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}
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17
pico/pico.h
17
pico/pico.h
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@ -98,21 +98,12 @@ typedef struct
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} picohw_state;
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extern picohw_state PicoPicohw;
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// Area.c
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typedef size_t (arearw)(void *p, size_t _size, size_t _n, void *file);
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typedef size_t (areaeof)(void *file);
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typedef int (areaseek)(void *file, long offset, int whence);
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typedef int (areaclose)(void *file);
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// Save or load the state from PmovFile:
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int PmovState(int PmovAction, void *PmovFile); // &1=for reading &2=for writing &4=volatile &8=non-volatile
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extern arearw *areaRead; // external read and write function pointers for
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extern arearw *areaWrite; // gzip save state ability
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extern areaeof *areaEof;
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extern areaseek *areaSeek;
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extern areaclose *areaClose;
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// area.c
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int PicoState(const char *fname, int is_save);
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int PicoStateLoadVDP(const char *fname);
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extern void (*PicoStateProgressCB)(const char *str);
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// cd/Area.c
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// cd/area.c
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int PicoCdLoadStateGfx(void *file);
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// cd/buffering.c
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@ -388,6 +388,17 @@ typedef struct {
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extern carthw_state_chunk *carthw_chunks;
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#define CHUNK_CARTHW 64
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// area.c
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typedef size_t (arearw)(void *p, size_t _size, size_t _n, void *file);
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typedef size_t (areaeof)(void *file);
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typedef int (areaseek)(void *file, long offset, int whence);
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typedef int (areaclose)(void *file);
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extern arearw *areaRead; // external read and write function pointers for
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extern arearw *areaWrite; // gzip save state ability
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extern areaeof *areaEof;
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extern areaseek *areaSeek;
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extern areaclose *areaClose;
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// Cart.c
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extern void (*PicoCartUnloadHook)(void);
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