asar coverage - build #139

src/asar/
File: src/asar/libsmw.h
Date: 2024-01-23 10:16:20
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1 #pragma once
2
3 #include "errors.h"
4 #include "autoarray.h"
5 #include <cstdint>
6
7 extern const unsigned char * romdata;
8 extern int romlen;
9 extern asar_error_id openromerror;
10 bool openrom(const char * filename, bool confirm=true);
11 uint32_t closerom(bool save = true);
12
13 enum mapper_t {
14 invalid_mapper,
15 lorom,
16 hirom,
17 sa1rom,
18 bigsa1rom,
19 sfxrom,
20 exlorom,
21 exhirom,
22 norom
23 } extern mapper;
24
25 extern int sa1banks[8];//only 0, 1, 4, 5 are used
26
27 void writeromdata(int pcoffset, const void * indata, int numbytes);
28 void writeromdata_byte(int pcoffset, unsigned char indata);
29 void writeromdata_bytes(int pcoffset, unsigned char indata, int numbytes);
30
31 struct writtenblockdata {
32 int pcoffset;
33 int snesoffset;
34 int numbytes;
35 };
36
37 extern autoarray<writtenblockdata> writtenblocks;
38
39 85866 inline int snestopc(int addr)
40 {
41
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 85866 if (addr<0 || addr>0xFFFFFF) return -1;//not 24bit
42
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 85866 if (mapper==lorom)
43 {
44 // randomdude999: The low pages ($0000-$7FFF) of banks 70-7D are used
45 // for SRAM, the high pages are available for ROM data though
46
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 81840 if ((addr&0xFE0000)==0x7E0000 ||//wram
47
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 81840 (addr&0x408000)==0x000000 ||//hardware regs, ram mirrors, other strange junk
48
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 81840 (addr&0x708000)==0x700000)//sram (low parts of banks 70-7D)
49 ✗ return -1;
50 81840 addr=((addr&0x7F0000)>>1|(addr&0x7FFF));
51 81840 return addr;
52 }
53
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 2013 if (mapper==hirom)
54 {
55
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 1210 if ((addr&0xFE0000)==0x7E0000 ||//wram
56
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 1210 (addr&0x408000)==0x000000)//hardware regs, ram mirrors, other strange junk
57 ✗ return -1;
58 1210 return addr&0x3FFFFF;
59 }
60
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 1408 if (mapper==exlorom)
61 {
62
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 1200 if ((addr&0xF00000)==0x700000 ||//wram, sram
63
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 1200 (addr&0x408000)==0x000000)//area that shouldn't be used in lorom
64 ✗ return -1;
65
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 1200 if (addr&0x800000)
66 {
67 84 addr=((addr&0x7F0000)>>1|(addr&0x7FFF));
68 }
69 else
70 {
71 1116 addr=((addr&0x7F0000)>>1|(addr&0x7FFF))+0x400000;
72 }
73 1200 return addr;
74 }
75
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 808 if (mapper==exhirom)
76 {
77
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 1220 if ((addr&0xFE0000)==0x7E0000 ||//wram
78
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 1220 (addr&0x408000)==0x000000)//hardware regs, ram mirrors, other strange junk
79 ✗ return -1;
80
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 1220 if ((addr&0x800000)==0x000000) return (addr&0x3FFFFF)|0x400000;
81 100 return addr&0x3FFFFF;
82 }
83
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 198 if (mapper==sfxrom)
84 {
85 // Asar emulates GSU1, because apparently emulators don't support the extra ROM data from GSU2
86
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 58 if ((addr&0x600000)==0x600000 ||//wram, sram, open bus
87
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 58 (addr&0x408000)==0x000000 ||//hardware regs, ram mirrors, rom mirrors, other strange junk
88
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 58 (addr&0x800000)==0x800000)//fastrom isn't valid either in superfx
89 ✗ return -1;
90
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 58 if (addr&0x400000) return addr&0x3FFFFF;
91 58 else return (addr&0x7F0000)>>1|(addr&0x7FFF);
92 }
93
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 169 if (mapper==sa1rom)
94 {
95
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 64 if ((addr&0x408000)==0x008000)
96 {
97 64 return sa1banks[(addr&0xE00000)>>21]|((addr&0x1F0000)>>1)|(addr&0x007FFF);
98 }
99 ✗ if ((addr&0xC00000)==0xC00000)
100 {
101 ✗ return sa1banks[((addr&0x100000)>>20)|((addr&0x200000)>>19)]|(addr&0x0FFFFF);
102 }
103 ✗ return -1;
104 }
105
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 137 if (mapper==bigsa1rom)
106 {
107
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 106 if ((addr&0xC00000)==0xC00000)//hirom
108 {
109 48 return (addr&0x3FFFFF)|0x400000;
110 }
111
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 58 if ((addr&0xC00000)==0x000000 || (addr&0xC00000)==0x800000)//lorom
112 {
113
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 58 if ((addr&0x008000)==0x000000) return -1;
114 58 return (addr&0x800000)>>2 | (addr&0x3F0000)>>1 | (addr&0x7FFF);
115 }
116 ✗ return -1;
117 }
118
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 84 if (mapper==norom)
119 {
120 168 return addr;
121 }
122 ✗ return -1;
123 }
124
125 746 inline int pctosnes(int addr)
126 {
127
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 746 if (addr<0) return -1;
128
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 746 if (mapper==lorom)
129 {
130
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 674 if (addr>=0x400000) return -1;
131 674 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
132 674 return addr|0x800000;
133 }
134
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 36 if (mapper==hirom)
135 {
136
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 16 if (addr>=0x400000) return -1;
137 16 return addr|0xC00000;
138 }
139
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 28 if (mapper == exlorom)
140 {
141
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 24 if (addr>=0x800000) return -1;
142
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 24 if (addr&0x400000)
143 {
144 12 addr-=0x400000;
145 12 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
146 12 return addr;
147 }
148 else
149 {
150 12 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
151 12 return addr|0x800000;
152 }
153 }
154
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 16 if (mapper == exhirom)
155 {
156
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 24 if (addr>=0x800000) return -1;
157
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 24 if (addr&0x400000) return addr;
158 12 return addr|0xC00000;
159 }
160
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 4 if (mapper==sa1rom)
161 {
162
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 4 for (int i=0;i<8;i++)
163 {
164
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 4 if (sa1banks[i]==(addr&0x700000)){ return 0x008000|(i<<21)|((addr&0x0F8000)<<1)|(addr&0x7FFF);}
165 }
166 ✗ return -1;
167 }
168
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 2 if (mapper==bigsa1rom)
169 {
170 ✗ if (addr>=0x800000) return -1;
171 ✗ if ((addr&0x400000)==0x400000)
172 {
173 ✗ return addr|0xC00000;
174 }
175 ✗ if ((addr&0x600000)==0x000000)
176 {
177 ✗ return ((addr<<1)&0x3F0000)|0x8000|(addr&0x7FFF);
178 }
179 ✗ if ((addr&0x600000)==0x200000)
180 {
181 ✗ return 0x800000|((addr<<1)&0x3F0000)|0x8000|(addr&0x7FFF);
182 }
183 ✗ return -1;
184 }
185
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 2 if (mapper==sfxrom)
186 {
187
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 4 if (addr>=0x200000) return -1;
188 4 return ((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
189 }
190 ✗ if (mapper==norom)
191 {
192 ✗ return addr;
193 }
194 ✗ return -1;
195 }
196
197 int getpcfreespace(int size, bool isforcode, bool autoexpand=true, bool respectbankborders=true, bool align=false, unsigned char freespacebyte=0x00);
198 int getsnesfreespace(int size, bool isforcode, bool autoexpand=true, bool respectbankborders=true, bool align=false, unsigned char freespacebyte=0x00);
199
200 void resizerats(int snesaddr, int newlen);
201 void removerats(int snesaddr, unsigned char clean_byte);
202 int ratsstart(int pcaddr);
203
204 bool goodchecksum();
205 void fixchecksum();
206
207 void WalkRatsTags(void(*func)(int loc, int len));//This one calls func() for each RATS tag in the ROM. The pointer is SNES format.
208 void WalkMetadata(int loc, void(*func)(int loc, char * name, int len, const unsigned char * contents));//This one calls func() for each metadata block in the RATS tag whose contents (metadata) start at loc in the ROM. Do not replace name with an invalid metadata name, and note that name is not null terminated.
209