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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 |
860c6322 |
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 |
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30 | \r |
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31 | void (*PicoLoadStateHook)(void) = NULL;\r |
32 | \r |
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33 | \r |
34 | // Scan one variable and callback\r |
35 | static int ScanVar(void *data,int len,char *name,void *PmovFile,int PmovAction)\r |
36 | {\r |
37 | int ret = 0;\r |
38 | if ((PmovAction&3)==1) ret = areaWrite(data,1,len,PmovFile);\r |
39 | if ((PmovAction&3)==2) ret = areaRead (data,1,len,PmovFile);\r |
40 | return (ret != len);\r |
41 | }\r |
42 | \r |
43 | #define SCAN_VAR(x,y) ScanVar(&x,sizeof(x),y,PmovFile,PmovAction);\r |
44 | #define SCANP(x) ScanVar(&Pico.x,sizeof(Pico.x),#x,PmovFile,PmovAction);\r |
45 | \r |
46 | // Pack the cpu into a common format:\r |
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47 | PICO_INTERNAL int PicoAreaPackCpu(unsigned char *cpu, int is_sub)\r |
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48 | {\r |
49 | unsigned int pc=0;\r |
50 | \r |
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51 | #if defined(EMU_C68K)\r |
52 | struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;\r |
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53 | memcpy(cpu,context->d,0x40);\r |
54 | pc=context->pc-context->membase;\r |
55 | *(unsigned int *)(cpu+0x44)=CycloneGetSr(context);\r |
56 | *(unsigned int *)(cpu+0x48)=context->osp;\r |
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57 | cpu[0x4c] = context->irq;\r |
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58 | cpu[0x4d] = context->state_flags & 1;\r |
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59 | #elif defined(EMU_M68K)\r |
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60 | void *oldcontext = m68ki_cpu_p;\r |
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61 | m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);\r |
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62 | memcpy(cpu,m68ki_cpu_p->dar,0x40);\r |
63 | pc=m68ki_cpu_p->pc;\r |
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64 | *(unsigned int *)(cpu+0x44)=m68k_get_reg(NULL, M68K_REG_SR);\r |
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65 | *(unsigned int *)(cpu+0x48)=m68ki_cpu_p->sp[0];\r |
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66 | cpu[0x4c] = CPU_INT_LEVEL>>8;\r |
67 | cpu[0x4d] = CPU_STOPPED;\r |
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68 | m68k_set_context(oldcontext);\r |
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69 | #elif defined(EMU_F68K)\r |
70 | M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r |
71 | memcpy(cpu,context->dreg,0x40);\r |
72 | pc=context->pc;\r |
73 | *(unsigned int *)(cpu+0x44)=context->sr;\r |
74 | *(unsigned int *)(cpu+0x48)=context->asp;\r |
75 | cpu[0x4c] = context->interrupts[0];\r |
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76 | cpu[0x4d] = (context->execinfo & FM68K_HALTED) ? 1 : 0;\r |
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77 | #endif\r |
78 | \r |
79 | *(unsigned int *)(cpu+0x40)=pc;\r |
80 | return 0;\r |
81 | }\r |
82 | \r |
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83 | PICO_INTERNAL int PicoAreaUnpackCpu(unsigned char *cpu, int is_sub)\r |
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84 | {\r |
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85 | #if defined(EMU_C68K)\r |
86 | struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;\r |
87 | CycloneSetSr(context, *(unsigned int *)(cpu+0x44));\r |
88 | context->osp=*(unsigned int *)(cpu+0x48);\r |
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89 | memcpy(context->d,cpu,0x40);\r |
90 | context->membase=0;\r |
91 | context->pc = context->checkpc(*(unsigned int *)(cpu+0x40)); // Base pc\r |
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92 | context->irq = cpu[0x4c];\r |
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93 | context->state_flags = 0;\r |
94 | if (cpu[0x4d])\r |
95 | context->state_flags |= 1;\r |
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96 | #elif defined(EMU_M68K)\r |
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97 | void *oldcontext = m68ki_cpu_p;\r |
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98 | m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);\r |
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99 | memcpy(m68ki_cpu_p->dar,cpu,0x40);\r |
100 | m68ki_cpu_p->pc=*(unsigned int *)(cpu+0x40);\r |
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101 | m68k_set_reg(M68K_REG_SR, *(unsigned int *)(cpu+0x44));\r |
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102 | m68ki_cpu_p->sp[0]=*(unsigned int *)(cpu+0x48);\r |
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103 | CPU_INT_LEVEL = cpu[0x4c] << 8;\r |
104 | CPU_STOPPED = cpu[0x4d];\r |
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105 | m68k_set_context(oldcontext);\r |
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106 | #elif defined(EMU_F68K)\r |
107 | M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r |
108 | memcpy(context->dreg,cpu,0x40);\r |
109 | context->pc =*(unsigned int *)(cpu+0x40);\r |
110 | context->sr =*(unsigned int *)(cpu+0x44);\r |
111 | context->asp=*(unsigned int *)(cpu+0x48);\r |
112 | context->interrupts[0] = cpu[0x4c];\r |
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113 | context->execinfo &= ~FM68K_HALTED;\r |
114 | if (cpu[0x4d]&1) context->execinfo |= FM68K_HALTED;\r |
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115 | #endif\r |
116 | return 0;\r |
117 | }\r |
118 | \r |
119 | // Scan the contents of the virtual machine's memory for saving or loading\r |
120 | static int PicoAreaScan(int PmovAction,unsigned int ver, void *PmovFile)\r |
121 | {\r |
122 | void *ym2612_regs;\r |
123 | unsigned char cpu[0x60];\r |
124 | unsigned char cpu_z80[0x60];\r |
125 | int ret;\r |
126 | \r |
127 | memset(&cpu,0,sizeof(cpu));\r |
128 | memset(&cpu_z80,0,sizeof(cpu_z80));\r |
129 | \r |
130 | ym2612_regs = YM2612GetRegs();\r |
131 | \r |
132 | if (PmovAction&4)\r |
133 | {\r |
134 | Pico.m.scanline=0;\r |
135 | \r |
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136 | // Scan all the memory areas:\r |
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137 | SCANP(ram) SCANP(vram) SCANP(zram) SCANP(cram) SCANP(vsram)\r |
138 | \r |
139 | // Pack, scan and unpack the cpu data:\r |
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140 | if((PmovAction&3)==1) PicoAreaPackCpu(cpu, 0);\r |
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141 | //PicoMemInit();\r |
142 | SCAN_VAR(cpu,"cpu")\r |
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143 | if((PmovAction&3)==2) PicoAreaUnpackCpu(cpu, 0);\r |
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144 | \r |
145 | SCAN_VAR(Pico.m ,"misc")\r |
146 | SCAN_VAR(Pico.video,"video")\r |
147 | \r |
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148 | // notaz: save/load z80, YM2612, sn76496 states instead of Pico.s (which is unused anyway)\r |
149 | if(PicoOpt&7) {\r |
150 | if((PmovAction&3)==1) z80_pack(cpu_z80);\r |
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151 | ret = SCAN_VAR(cpu_z80,"cpu_z80")\r |
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152 | // do not unpack if we fail to load z80 state\r |
153 | if((PmovAction&3)==2) {\r |
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154 | if(ret) z80_reset();\r |
155 | else z80_unpack(cpu_z80);\r |
156 | }\r |
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157 | }\r |
158 | if(PicoOpt&3)\r |
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159 | ScanVar(sn76496_regs,28*4,"SN76496state", PmovFile, PmovAction); // regs and other stuff\r |
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160 | if(PicoOpt&1) {\r |
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161 | ScanVar(ym2612_regs, 0x200+4, "YM2612state", PmovFile, PmovAction); // regs + addr line\r |
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162 | if((PmovAction&3)==2) YM2612PicoStateLoad(); // reload YM2612 state from it's regs\r |
163 | }\r |
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164 | }\r |
165 | \r |
166 | return 0;\r |
167 | }\r |
168 | \r |
169 | // ---------------------------------------------------------------------------\r |
170 | // Helper code to save/load to a file handle\r |
171 | \r |
172 | // Save or load the state from PmovFile:\r |
173 | int PmovState(int PmovAction, void *PmovFile)\r |
174 | {\r |
175 | int minimum=0;\r |
176 | unsigned char head[32];\r |
177 | \r |
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178 | if ((PicoMCD & 1) || carthw_chunks != NULL)\r |
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179 | {\r |
180 | if (PmovAction&1) return PicoCdSaveState(PmovFile);\r |
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181 | if (PmovAction&2) {\r |
182 | int ret = PicoCdLoadState(PmovFile);\r |
183 | if (PicoLoadStateHook) PicoLoadStateHook();\r |
184 | return ret;\r |
185 | }\r |
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186 | }\r |
187 | \r |
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188 | memset(head,0,sizeof(head));\r |
189 | \r |
190 | // Find out minimal compatible version:\r |
191 | //PicoAreaScan(PmovAction&0xc,&minimum);\r |
192 | minimum = 0x0021;\r |
193 | \r |
194 | memcpy(head,"Pico",4);\r |
195 | *(unsigned int *)(head+0x8)=PicoVer;\r |
196 | *(unsigned int *)(head+0xc)=minimum;\r |
197 | \r |
198 | // Scan header:\r |
199 | if (PmovAction&1) areaWrite(head,1,sizeof(head),PmovFile);\r |
200 | if (PmovAction&2) areaRead (head,1,sizeof(head),PmovFile);\r |
201 | \r |
202 | // Scan memory areas:\r |
203 | PicoAreaScan(PmovAction, *(unsigned int *)(head+0x8), PmovFile);\r |
204 | \r |
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205 | if ((PmovAction&2) && PicoLoadStateHook) PicoLoadStateHook();\r |
206 | \r |
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207 | return 0;\r |
208 | }\r |
209 | \r |