+++ /dev/null
-// This is part of Pico Library\r
-\r
-// (c) Copyright 2004 Dave, All rights reserved.\r
-// (c) Copyright 2006 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
-// ym2612\r
-#include "sound/ym2612.h"\r
-\r
-// sn76496\r
-extern int *sn76496_regs;\r
-\r
-struct PicoArea { void *data; int len; char *name; };\r
-\r
-// strange observation on Symbian OS 9.1, m600 organizer fw r3a06:\r
-// taking an address of fread or fwrite causes "application could't be started" error\r
-// on startup randomly depending on binary layout of executable file.\r
-\r
-arearw *areaRead = (arearw *) 0; // fread; // read and write function pointers for\r
-arearw *areaWrite = (arearw *) 0; // fwrite; // gzip save state ability\r
-areaeof *areaEof = (areaeof *) 0;\r
-areaseek *areaSeek = (areaseek *) 0;\r
-areaclose *areaClose = (areaclose *) 0;\r
-\r
-void (*PicoLoadStateHook)(void) = NULL;\r
-\r
-\r
-// Scan one variable and callback\r
-static int ScanVar(void *data,int len,char *name,void *PmovFile,int is_write)\r
-{\r
- int ret = 0;\r
- if (is_write)\r
- ret = areaWrite(data,1,len,PmovFile);\r
- else\r
- ret = areaRead (data,1,len,PmovFile);\r
- return (ret != len);\r
-}\r
-\r
-#define SCAN_VAR(x,y) ScanVar(&x,sizeof(x),y,PmovFile,is_write);\r
-#define SCANP(x) ScanVar(&Pico.x,sizeof(Pico.x),#x,PmovFile,is_write);\r
-\r
-// Pack the cpu into a common format:\r
-PICO_INTERNAL void PicoAreaPackCpu(unsigned char *cpu, int is_sub)\r
-{\r
- unsigned int pc=0;\r
-\r
-#if defined(EMU_C68K)\r
- struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;\r
- memcpy(cpu,context->d,0x40);\r
- pc=context->pc-context->membase;\r
- *(unsigned int *)(cpu+0x44)=CycloneGetSr(context);\r
- *(unsigned int *)(cpu+0x48)=context->osp;\r
- cpu[0x4c] = context->irq;\r
- cpu[0x4d] = context->state_flags & 1;\r
-#elif defined(EMU_M68K)\r
- void *oldcontext = m68ki_cpu_p;\r
- m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);\r
- memcpy(cpu,m68ki_cpu_p->dar,0x40);\r
- pc=m68ki_cpu_p->pc;\r
- *(unsigned int *)(cpu+0x44)=m68k_get_reg(NULL, M68K_REG_SR);\r
- *(unsigned int *)(cpu+0x48)=m68ki_cpu_p->sp[m68ki_cpu_p->s_flag^SFLAG_SET];\r
- cpu[0x4c] = CPU_INT_LEVEL>>8;\r
- cpu[0x4d] = CPU_STOPPED;\r
- m68k_set_context(oldcontext);\r
-#elif defined(EMU_F68K)\r
- M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r
- memcpy(cpu,context->dreg,0x40);\r
- pc=context->pc;\r
- *(unsigned int *)(cpu+0x44)=context->sr;\r
- *(unsigned int *)(cpu+0x48)=context->asp;\r
- cpu[0x4c] = context->interrupts[0];\r
- cpu[0x4d] = (context->execinfo & FM68K_HALTED) ? 1 : 0;\r
-#endif\r
-\r
- *(unsigned int *)(cpu+0x40)=pc;\r
-}\r
-\r
-PICO_INTERNAL void PicoAreaUnpackCpu(unsigned char *cpu, int is_sub)\r
-{\r
-#if defined(EMU_C68K)\r
- struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;\r
- CycloneSetSr(context, *(unsigned int *)(cpu+0x44));\r
- context->osp=*(unsigned int *)(cpu+0x48);\r
- memcpy(context->d,cpu,0x40);\r
- context->membase = 0;\r
- context->pc = *(unsigned int *)(cpu+0x40);\r
- CycloneUnpack(context, NULL); // rebase PC\r
- context->irq = cpu[0x4c];\r
- context->state_flags = 0;\r
- if (cpu[0x4d])\r
- context->state_flags |= 1;\r
-#elif defined(EMU_M68K)\r
- void *oldcontext = m68ki_cpu_p;\r
- m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);\r
- m68k_set_reg(M68K_REG_SR, *(unsigned int *)(cpu+0x44));\r
- memcpy(m68ki_cpu_p->dar,cpu,0x40);\r
- m68ki_cpu_p->pc=*(unsigned int *)(cpu+0x40);\r
- m68ki_cpu_p->sp[m68ki_cpu_p->s_flag^SFLAG_SET]=*(unsigned int *)(cpu+0x48);\r
- CPU_INT_LEVEL = cpu[0x4c] << 8;\r
- CPU_STOPPED = cpu[0x4d];\r
- m68k_set_context(oldcontext);\r
-#elif defined(EMU_F68K)\r
- M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r
- memcpy(context->dreg,cpu,0x40);\r
- context->pc =*(unsigned int *)(cpu+0x40);\r
- context->sr =*(unsigned int *)(cpu+0x44);\r
- context->asp=*(unsigned int *)(cpu+0x48);\r
- context->interrupts[0] = cpu[0x4c];\r
- context->execinfo &= ~FM68K_HALTED;\r
- if (cpu[0x4d]&1) context->execinfo |= FM68K_HALTED;\r
-#endif\r
-}\r
-\r
-// Scan the contents of the virtual machine's memory for saving or loading\r
-static int PicoAreaScan(int is_write, unsigned int ver, void *PmovFile)\r
-{\r
- void *ym2612_regs;\r
- unsigned char cpu[0x60];\r
- unsigned char cpu_z80[0x60];\r
- int ret;\r
-\r
- memset(&cpu,0,sizeof(cpu));\r
- memset(&cpu_z80,0,sizeof(cpu_z80));\r
- Pico.m.scanline=0;\r
-\r
- ym2612_regs = YM2612GetRegs();\r
-\r
- // Scan all the memory areas:\r
- SCANP(ram) SCANP(vram) SCANP(zram) SCANP(cram) SCANP(vsram)\r
-\r
- // Pack, scan and unpack the cpu data:\r
- if (is_write)\r
- PicoAreaPackCpu(cpu, 0);\r
- SCAN_VAR(cpu,"cpu")\r
- if (!is_write)\r
- PicoAreaUnpackCpu(cpu, 0);\r
-\r
- SCAN_VAR(Pico.m ,"misc")\r
- SCAN_VAR(Pico.video,"video")\r
-\r
- // no longer keeping eeprom data in sram_reg\r
- if (!is_write && (Pico.m.sram_reg & 4))\r
- Pico.m.sram_reg = SRR_MAPPED;\r
-\r
- if (is_write)\r
- z80_pack(cpu_z80);\r
- ret = SCAN_VAR(cpu_z80,"cpu_z80")\r
- // do not unpack if we fail to load z80 state\r
- if (!is_write) {\r
- if (ret) z80_reset();\r
- else z80_unpack(cpu_z80);\r
- }\r
-\r
- ScanVar(sn76496_regs, 28*4, "SN76496state", PmovFile, is_write);\r
- if (is_write)\r
- ym2612_pack_state();\r
- ret = ScanVar(ym2612_regs, 0x200+4, "YM2612state", PmovFile, is_write); // regs + addr line\r
- if (!is_write && !ret)\r
- ym2612_unpack_state();\r
-\r
- return 0;\r
-}\r
-\r
-// ---------------------------------------------------------------------------\r
-// Helper code to save/load to a file handle\r
-\r
-// XXX: error checking\r
-// Save or load the state from PmovFile:\r
-static int PmovState(int is_write, void *PmovFile)\r
-{\r
- unsigned char head[32];\r
-\r
- if ((PicoAHW & PAHW_MCD) || carthw_chunks != NULL)\r
- {\r
- if (is_write)\r
- return PicoCdSaveState(PmovFile);\r
- else {\r
- int ret = PicoCdLoadState(PmovFile);\r
- if (PicoLoadStateHook) PicoLoadStateHook();\r
- return ret;\r
- }\r
- }\r
-\r
- memset(head,0,sizeof(head));\r
-\r
- // not really used..\r
- memcpy(head,"Pico",4);\r
- *(unsigned int *)(head+0x8)=0x0133;\r
- *(unsigned int *)(head+0xc)=0x0021;\r
-\r
- // Scan header:\r
- if (is_write)\r
- areaWrite(head,1,sizeof(head),PmovFile);\r
- else\r
- areaRead (head,1,sizeof(head),PmovFile);\r
-\r
- // Scan memory areas:\r
- PicoAreaScan(is_write, *(unsigned int *)(head+0x8), PmovFile);\r
-\r
- if (!is_write && PicoLoadStateHook)\r
- PicoLoadStateHook();\r
-\r
- return 0;\r
-}\r
-\r
-static size_t gzRead2(void *p, size_t _size, size_t _n, void *file)\r
-{\r
- return gzread(file, p, _n);\r
-}\r
-\r
-static size_t gzWrite2(void *p, size_t _size, size_t _n, void *file)\r
-{\r
- return gzwrite(file, p, _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
-int PicoState(const char *fname, int is_save)\r
-{\r
- void *afile = NULL;\r
- int ret;\r
-\r
- if (strcmp(fname + strlen(fname) - 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
- if (afile == NULL)\r
- return -1;\r
-\r
- ret = PmovState(is_save, afile);\r
- areaClose(afile);\r
- if (!is_save)\r
- Pico.m.dirtyPal=1;\r
-\r
- return ret;\r
-}\r
-\r
-int PicoStateLoadVDP(const char *fname)\r
-{\r
- void *afile = NULL;\r
- if (strcmp(fname + strlen(fname) - 3, ".gz") == 0)\r
- {\r
- if ( (afile = gzopen(fname, "rb")) )\r
- set_cbs(1);\r
- }\r
- else\r
- {\r
- if ( (afile = fopen(fname, "rb")) )\r
- set_cbs(0);\r
- }\r
- if (afile == NULL)\r
- return -1;\r
-\r
- if ((PicoAHW & PAHW_MCD) || carthw_chunks != NULL) {\r
- PicoCdLoadStateGfx(afile);\r
- } else {\r
- areaSeek(afile, 0x10020, SEEK_SET); // skip header and RAM in state file\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
notaz.gp2x.de / picodrive.git / blobdiff