| 1 | // This is part of Pico Library\r |
| 2 | \r |
| 3 | // (c) Copyright 2004 Dave, All rights reserved.\r |
| 4 | // (c) Copyright 2006 notaz, All rights reserved.\r |
| 5 | // Free for non-commercial use.\r |
| 6 | \r |
| 7 | // For commercial use, separate licencing terms must be obtained.\r |
| 8 | \r |
| 9 | \r |
| 10 | #include "PicoInt.h"\r |
| 11 | \r |
| 12 | // ym2612\r |
| 13 | #include "sound/ym2612.h"\r |
| 14 | \r |
| 15 | // sn76496\r |
| 16 | extern int *sn76496_regs;\r |
| 17 | \r |
| 18 | \r |
| 19 | struct PicoArea { void *data; int len; char *name; };\r |
| 20 | \r |
| 21 | // strange observation on Symbian OS 9.1, m600 organizer fw r3a06:\r |
| 22 | // taking an address of fread or fwrite causes "application could't be started" error\r |
| 23 | // on startup randomly depending on binary layout of executable file.\r |
| 24 | \r |
| 25 | arearw *areaRead = (arearw *) 0; // fread; // read and write function pointers for\r |
| 26 | arearw *areaWrite = (arearw *) 0; // fwrite; // gzip save state ability\r |
| 27 | areaeof *areaEof = (areaeof *) 0;\r |
| 28 | areaseek *areaSeek = (areaseek *) 0;\r |
| 29 | areaclose *areaClose = (areaclose *) 0;\r |
| 30 | \r |
| 31 | \r |
| 32 | // Scan one variable and callback\r |
| 33 | static int ScanVar(void *data,int len,char *name,void *PmovFile,int PmovAction)\r |
| 34 | {\r |
| 35 | int ret = 0;\r |
| 36 | if ((PmovAction&3)==1) ret = areaWrite(data,1,len,PmovFile);\r |
| 37 | if ((PmovAction&3)==2) ret = areaRead (data,1,len,PmovFile);\r |
| 38 | return (ret != len);\r |
| 39 | }\r |
| 40 | \r |
| 41 | #define SCAN_VAR(x,y) ScanVar(&x,sizeof(x),y,PmovFile,PmovAction);\r |
| 42 | #define SCANP(x) ScanVar(&Pico.x,sizeof(Pico.x),#x,PmovFile,PmovAction);\r |
| 43 | \r |
| 44 | // Pack the cpu into a common format:\r |
| 45 | int PicoAreaPackCpu(unsigned char *cpu, int is_sub)\r |
| 46 | {\r |
| 47 | unsigned int pc=0;\r |
| 48 | \r |
| 49 | #ifdef EMU_A68K\r |
| 50 | memcpy(cpu,M68000_regs.d,0x40);\r |
| 51 | pc=M68000_regs.pc;\r |
| 52 | *(unsigned char *)(cpu+0x44)=(unsigned char)M68000_regs.ccr;\r |
| 53 | *(unsigned char *)(cpu+0x45)=(unsigned char)M68000_regs.srh;\r |
| 54 | *(unsigned int *)(cpu+0x48)=M68000_regs.isp;\r |
| 55 | #endif\r |
| 56 | \r |
| 57 | #ifdef EMU_C68K\r |
| 58 | struct Cyclone *context = is_sub ? &PicoCpuS68k : &PicoCpu;\r |
| 59 | memcpy(cpu,context->d,0x40);\r |
| 60 | pc=context->pc-context->membase;\r |
| 61 | *(unsigned int *)(cpu+0x44)=CycloneGetSr(context);\r |
| 62 | *(unsigned int *)(cpu+0x48)=context->osp;\r |
| 63 | #endif\r |
| 64 | \r |
| 65 | #ifdef EMU_M68K\r |
| 66 | void *oldcontext = m68ki_cpu_p;\r |
| 67 | m68k_set_context(is_sub ? &PicoS68kCPU : &PicoM68kCPU);\r |
| 68 | memcpy(cpu,m68ki_cpu_p->dar,0x40);\r |
| 69 | pc=m68ki_cpu_p->pc;\r |
| 70 | *(unsigned int *)(cpu+0x44)=m68k_get_reg(NULL, M68K_REG_SR);\r |
| 71 | *(unsigned int *)(cpu+0x48)=m68ki_cpu_p->sp[0];\r |
| 72 | m68k_set_context(oldcontext);\r |
| 73 | #endif\r |
| 74 | \r |
| 75 | *(unsigned int *)(cpu+0x40)=pc;\r |
| 76 | return 0;\r |
| 77 | }\r |
| 78 | \r |
| 79 | int PicoAreaUnpackCpu(unsigned char *cpu, int is_sub)\r |
| 80 | {\r |
| 81 | #ifdef EMU_A68K\r |
| 82 | memcpy(M68000_regs.d,cpu,0x40);\r |
| 83 | M68000_regs.pc=pc;\r |
| 84 | M68000_regs.ccr=*(unsigned char *)(cpu+0x44);\r |
| 85 | M68000_regs.srh=*(unsigned char *)(cpu+0x45);\r |
| 86 | M68000_regs.isp=*(unsigned int *)(cpu+0x48);\r |
| 87 | #endif\r |
| 88 | \r |
| 89 | #ifdef EMU_C68K\r |
| 90 | struct Cyclone *context = is_sub ? &PicoCpuS68k : &PicoCpu;\r |
| 91 | CycloneSetSr(context, *(unsigned int *)(cpu+0x44));\r |
| 92 | context->osp=*(unsigned int *)(cpu+0x48);\r |
| 93 | memcpy(context->d,cpu,0x40);\r |
| 94 | context->membase=0;\r |
| 95 | context->pc = context->checkpc(*(unsigned int *)(cpu+0x40)); // Base pc\r |
| 96 | #endif\r |
| 97 | \r |
| 98 | #ifdef EMU_M68K\r |
| 99 | void *oldcontext = m68ki_cpu_p;\r |
| 100 | m68k_set_context(is_sub ? &PicoS68kCPU : &PicoM68kCPU);\r |
| 101 | memcpy(m68ki_cpu_p->dar,cpu,0x40);\r |
| 102 | m68ki_cpu_p->pc=*(unsigned int *)(cpu+0x40);\r |
| 103 | m68k_set_reg(M68K_REG_SR, *(unsigned int *)(cpu+0x44));\r |
| 104 | m68ki_cpu_p->sp[0]=*(unsigned int *)(cpu+0x48);\r |
| 105 | m68k_set_context(oldcontext);\r |
| 106 | #endif\r |
| 107 | return 0;\r |
| 108 | }\r |
| 109 | \r |
| 110 | // Scan the contents of the virtual machine's memory for saving or loading\r |
| 111 | static int PicoAreaScan(int PmovAction,unsigned int ver, void *PmovFile)\r |
| 112 | {\r |
| 113 | void *ym2612_regs;\r |
| 114 | unsigned char cpu[0x60];\r |
| 115 | unsigned char cpu_z80[0x60];\r |
| 116 | int ret;\r |
| 117 | \r |
| 118 | memset(&cpu,0,sizeof(cpu));\r |
| 119 | memset(&cpu_z80,0,sizeof(cpu_z80));\r |
| 120 | \r |
| 121 | ym2612_regs = YM2612GetRegs();\r |
| 122 | \r |
| 123 | if (PmovAction&4)\r |
| 124 | {\r |
| 125 | Pico.m.scanline=0;\r |
| 126 | \r |
| 127 | // Scan all the memory areas:\r |
| 128 | SCANP(ram) SCANP(vram) SCANP(zram) SCANP(cram) SCANP(vsram)\r |
| 129 | \r |
| 130 | // Pack, scan and unpack the cpu data:\r |
| 131 | if((PmovAction&3)==1) PicoAreaPackCpu(cpu, 0);\r |
| 132 | //SekInit(); // notaz: do we really have to do this here?\r |
| 133 | //PicoMemInit();\r |
| 134 | SCAN_VAR(cpu,"cpu")\r |
| 135 | if((PmovAction&3)==2) PicoAreaUnpackCpu(cpu, 0);\r |
| 136 | \r |
| 137 | SCAN_VAR(Pico.m ,"misc")\r |
| 138 | SCAN_VAR(Pico.video,"video")\r |
| 139 | \r |
| 140 | // notaz: save/load z80, YM2612, sn76496 states instead of Pico.s (which is unused anyway)\r |
| 141 | if(PicoOpt&7) {\r |
| 142 | if((PmovAction&3)==1) z80_pack(cpu_z80);\r |
| 143 | ret = SCAN_VAR(cpu_z80,"cpu_z80")\r |
| 144 | // do not unpack if we fail to load z80 state\r |
| 145 | if((PmovAction&3)==2) {\r |
| 146 | if(ret) z80_reset();\r |
| 147 | else z80_unpack(cpu_z80);\r |
| 148 | }\r |
| 149 | }\r |
| 150 | if(PicoOpt&3)\r |
| 151 | ScanVar(sn76496_regs,28*4,"SN76496state", PmovFile, PmovAction); // regs and other stuff\r |
| 152 | if(PicoOpt&1) {\r |
| 153 | ScanVar(ym2612_regs, 0x200+4, "YM2612state", PmovFile, PmovAction); // regs + addr line\r |
| 154 | if((PmovAction&3)==2) YM2612PicoStateLoad(); // reload YM2612 state from it's regs\r |
| 155 | }\r |
| 156 | }\r |
| 157 | \r |
| 158 | return 0;\r |
| 159 | }\r |
| 160 | \r |
| 161 | // ---------------------------------------------------------------------------\r |
| 162 | // Helper code to save/load to a file handle\r |
| 163 | \r |
| 164 | // Save or load the state from PmovFile:\r |
| 165 | int PmovState(int PmovAction, void *PmovFile)\r |
| 166 | {\r |
| 167 | int minimum=0;\r |
| 168 | unsigned char head[32];\r |
| 169 | \r |
| 170 | if (PicoMCD & 1)\r |
| 171 | {\r |
| 172 | if (PmovAction&1) return PicoCdSaveState(PmovFile);\r |
| 173 | if (PmovAction&2) return PicoCdLoadState(PmovFile);\r |
| 174 | }\r |
| 175 | \r |
| 176 | memset(head,0,sizeof(head));\r |
| 177 | \r |
| 178 | // Find out minimal compatible version:\r |
| 179 | //PicoAreaScan(PmovAction&0xc,&minimum);\r |
| 180 | minimum = 0x0021;\r |
| 181 | \r |
| 182 | memcpy(head,"Pico",4);\r |
| 183 | *(unsigned int *)(head+0x8)=PicoVer;\r |
| 184 | *(unsigned int *)(head+0xc)=minimum;\r |
| 185 | \r |
| 186 | // Scan header:\r |
| 187 | if (PmovAction&1) areaWrite(head,1,sizeof(head),PmovFile);\r |
| 188 | if (PmovAction&2) areaRead (head,1,sizeof(head),PmovFile);\r |
| 189 | \r |
| 190 | // Scan memory areas:\r |
| 191 | PicoAreaScan(PmovAction, *(unsigned int *)(head+0x8), PmovFile);\r |
| 192 | \r |
| 193 | return 0;\r |
| 194 | }\r |
| 195 | \r |