cc68a136 |
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 | \r |
28 | \r |
29 | // Scan one variable and callback\r |
30 | static int ScanVar(void *data,int len,char *name,void *PmovFile,int PmovAction)\r |
31 | {\r |
32 | int ret = 0;\r |
33 | if ((PmovAction&3)==1) ret = areaWrite(data,1,len,PmovFile);\r |
34 | if ((PmovAction&3)==2) ret = areaRead (data,1,len,PmovFile);\r |
35 | return (ret != len);\r |
36 | }\r |
37 | \r |
38 | #define SCAN_VAR(x,y) ScanVar(&x,sizeof(x),y,PmovFile,PmovAction);\r |
39 | #define SCANP(x) ScanVar(&Pico.x,sizeof(Pico.x),#x,PmovFile,PmovAction);\r |
40 | \r |
41 | // Pack the cpu into a common format:\r |
42 | static int PackCpu(unsigned char *cpu)\r |
43 | {\r |
44 | unsigned int pc=0;\r |
45 | \r |
46 | #ifdef EMU_A68K\r |
47 | memcpy(cpu,M68000_regs.d,0x40);\r |
48 | pc=M68000_regs.pc;\r |
49 | *(unsigned char *)(cpu+0x44)=(unsigned char)M68000_regs.ccr;\r |
50 | *(unsigned char *)(cpu+0x45)=(unsigned char)M68000_regs.srh;\r |
51 | *(unsigned int *)(cpu+0x48)=M68000_regs.isp;\r |
52 | #endif\r |
53 | \r |
54 | #ifdef EMU_C68K\r |
55 | memcpy(cpu,PicoCpu.d,0x40);\r |
56 | pc=PicoCpu.pc-PicoCpu.membase;\r |
57 | *(unsigned int *)(cpu+0x44)=CycloneGetSr(&PicoCpu);\r |
58 | *(unsigned int *)(cpu+0x48)=PicoCpu.osp;\r |
59 | #endif\r |
60 | \r |
61 | #ifdef EMU_M68K\r |
62 | memcpy(cpu,m68ki_cpu.dar,0x40);\r |
63 | pc=m68ki_cpu.pc;\r |
64 | *(unsigned int *)(cpu+0x44)=m68k_get_reg(NULL, M68K_REG_SR);\r |
65 | *(unsigned int *)(cpu+0x48)=m68ki_cpu.sp[0];\r |
66 | #endif\r |
67 | \r |
68 | *(unsigned int *)(cpu+0x40)=pc;\r |
69 | return 0;\r |
70 | }\r |
71 | \r |
72 | static int UnpackCpu(unsigned char *cpu)\r |
73 | {\r |
74 | unsigned int pc=0;\r |
75 | \r |
76 | pc=*(unsigned int *)(cpu+0x40);\r |
77 | \r |
78 | #ifdef EMU_A68K\r |
79 | memcpy(M68000_regs.d,cpu,0x40);\r |
80 | M68000_regs.pc=pc;\r |
81 | M68000_regs.ccr=*(unsigned char *)(cpu+0x44);\r |
82 | M68000_regs.srh=*(unsigned char *)(cpu+0x45);\r |
83 | M68000_regs.isp=*(unsigned int *)(cpu+0x48);\r |
84 | #endif\r |
85 | \r |
86 | #ifdef EMU_C68K\r |
87 | CycloneSetSr(&PicoCpu, *(unsigned int *)(cpu+0x44));\r |
88 | PicoCpu.osp=*(unsigned int *)(cpu+0x48);\r |
89 | memcpy(PicoCpu.d,cpu,0x40);\r |
90 | PicoCpu.membase=0;\r |
91 | PicoCpu.pc =PicoCpu.checkpc(pc); // Base pc\r |
92 | #endif\r |
93 | \r |
94 | #ifdef EMU_M68K\r |
95 | memcpy(m68ki_cpu.dar,cpu,0x40);\r |
96 | m68ki_cpu.pc=pc;\r |
97 | m68k_set_reg(M68K_REG_SR, *(unsigned int *)(cpu+0x44));\r |
98 | m68ki_cpu.sp[0]=*(unsigned int *)(cpu+0x48);\r |
99 | #endif\r |
100 | return 0;\r |
101 | }\r |
102 | \r |
103 | // Scan the contents of the virtual machine's memory for saving or loading\r |
104 | static int PicoAreaScan(int PmovAction,unsigned int ver, void *PmovFile)\r |
105 | {\r |
106 | void *ym2612_regs;\r |
107 | unsigned char cpu[0x60];\r |
108 | unsigned char cpu_z80[0x60];\r |
109 | int ret;\r |
110 | \r |
111 | memset(&cpu,0,sizeof(cpu));\r |
112 | memset(&cpu_z80,0,sizeof(cpu_z80));\r |
113 | \r |
114 | ym2612_regs = YM2612GetRegs();\r |
115 | \r |
116 | if (PmovAction&4)\r |
117 | {\r |
118 | Pico.m.scanline=0;\r |
119 | \r |
120 | // Scan all the memory areas:\r |
121 | SCANP(ram) SCANP(vram) SCANP(zram) SCANP(cram) SCANP(vsram)\r |
122 | \r |
123 | // Pack, scan and unpack the cpu data:\r |
124 | if((PmovAction&3)==1) PackCpu(cpu);\r |
125 | //SekInit(); // notaz: do we really have to do this here?\r |
126 | //PicoMemInit();\r |
127 | SCAN_VAR(cpu,"cpu")\r |
128 | if((PmovAction&3)==2) UnpackCpu(cpu);\r |
129 | \r |
130 | SCAN_VAR(Pico.m ,"misc")\r |
131 | SCAN_VAR(Pico.video,"video")\r |
132 | \r |
133 | \r |
134 | if(ver == 0x0030) { // zram was being saved incorrectly in 0x0030 (byteswaped?)\r |
135 | Byteswap(Pico.zram, 0x2000);\r |
136 | return 0; // do not try to load sound stuff\r |
137 | }\r |
138 | \r |
139 | //SCAN_VAR(Pico.s ,"sound")\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 | memset(head,0,sizeof(head));\r |
171 | \r |
172 | // Find out minimal compatible version:\r |
173 | //PicoAreaScan(PmovAction&0xc,&minimum);\r |
174 | minimum = 0x0021;\r |
175 | \r |
176 | memcpy(head,"Pico",4);\r |
177 | *(unsigned int *)(head+0x8)=PicoVer;\r |
178 | *(unsigned int *)(head+0xc)=minimum;\r |
179 | \r |
180 | // Scan header:\r |
181 | if (PmovAction&1) areaWrite(head,1,sizeof(head),PmovFile);\r |
182 | if (PmovAction&2) areaRead (head,1,sizeof(head),PmovFile);\r |
183 | \r |
184 | // Scan memory areas:\r |
185 | PicoAreaScan(PmovAction, *(unsigned int *)(head+0x8), PmovFile);\r |
186 | \r |
187 | return 0;\r |
188 | }\r |
189 | \r |