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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 |
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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 |
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 |
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45 | int PicoAreaPackCpu(unsigned char *cpu, int is_sub)\r |
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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 |
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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 |
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63 | #endif\r |
64 | \r |
65 | #ifdef EMU_M68K\r |
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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 |
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70 | *(unsigned int *)(cpu+0x44)=m68k_get_reg(NULL, M68K_REG_SR);\r |
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71 | *(unsigned int *)(cpu+0x48)=m68ki_cpu_p->sp[0];\r |
72 | m68k_set_context(oldcontext);\r |
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73 | #endif\r |
74 | \r |
75 | *(unsigned int *)(cpu+0x40)=pc;\r |
76 | return 0;\r |
77 | }\r |
78 | \r |
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79 | int PicoAreaUnpackCpu(unsigned char *cpu, int is_sub)\r |
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80 | {\r |
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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 |
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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 |
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96 | #endif\r |
97 | \r |
98 | #ifdef EMU_M68K\r |
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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 |
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103 | m68k_set_reg(M68K_REG_SR, *(unsigned int *)(cpu+0x44));\r |
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104 | m68ki_cpu_p->sp[0]=*(unsigned int *)(cpu+0x48);\r |
105 | m68k_set_context(oldcontext);\r |
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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 |
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127 | // Scan all the memory areas:\r |
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128 | SCANP(ram) SCANP(vram) SCANP(zram) SCANP(cram) SCANP(vsram)\r |
129 | \r |
130 | // Pack, scan and unpack the cpu data:\r |
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131 | if((PmovAction&3)==1) PicoAreaPackCpu(cpu, 0);\r |
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132 | //SekInit(); // notaz: do we really have to do this here?\r |
133 | //PicoMemInit();\r |
134 | SCAN_VAR(cpu,"cpu")\r |
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135 | if((PmovAction&3)==2) PicoAreaUnpackCpu(cpu, 0);\r |
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136 | \r |
137 | SCAN_VAR(Pico.m ,"misc")\r |
138 | SCAN_VAR(Pico.video,"video")\r |
139 | \r |
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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 |
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143 | ret = SCAN_VAR(cpu_z80,"cpu_z80")\r |
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144 | // do not unpack if we fail to load z80 state\r |
145 | if((PmovAction&3)==2) {\r |
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146 | if(ret) z80_reset();\r |
147 | else z80_unpack(cpu_z80);\r |
148 | }\r |
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149 | }\r |
150 | if(PicoOpt&3)\r |
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151 | ScanVar(sn76496_regs,28*4,"SN76496state", PmovFile, PmovAction); // regs and other stuff\r |
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152 | if(PicoOpt&1) {\r |
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153 | ScanVar(ym2612_regs, 0x200+4, "YM2612state", PmovFile, PmovAction); // regs + addr line\r |
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154 | if((PmovAction&3)==2) YM2612PicoStateLoad(); // reload YM2612 state from it's regs\r |
155 | }\r |
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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 |
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170 | if (PicoMCD & 1)\r |
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171 | {\r |
172 | if (PmovAction&1) return PicoCdSaveState(PmovFile);\r |
173 | if (PmovAction&2) return PicoCdLoadState(PmovFile);\r |
174 | }\r |
175 | \r |
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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 |