asar coverage - build #291

src/asar/
File: src/asar/libsmw.h
Date: 2025-03-10 01:11:53
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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 unsigned char default_freespacebyte;
10 extern asar_error_id openromerror;
11 bool openrom(const char * filename, bool confirm=true);
12 uint32_t closerom(bool save = true);
13
14 enum mapper_t {
15 invalid_mapper,
16 lorom,
17 hirom,
18 sa1rom,
19 bigsa1rom,
20 sfxrom,
21 exlorom,
22 exhirom,
23 norom
24 } extern mapper;
25
26 extern int sa1banks[8];//only 0, 1, 4, 5 are used
27
28 void writeromdata(int pcoffset, const void * indata, int numbytes);
29 void writeromdata_byte(int pcoffset, unsigned char indata);
30 void writeromdata_bytes(int pcoffset, unsigned char indata, int numbytes, bool add_write = true);
31
32 struct writtenblockdata {
33 int pcoffset;
34 int snesoffset;
35 int numbytes;
36 };
37
38 extern autoarray<writtenblockdata> writtenblocks;
39
40 87130 inline int snestopc(int addr)
41 {
42
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 87130 if (addr<0 || addr>0xFFFFFF) return -1;//not 24bit
43
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 87130 if (mapper==lorom)
44 {
45 // randomdude999: The low pages ($0000-$7FFF) of banks 70-7D are used
46 // for SRAM, the high pages are available for ROM data though
47
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 82552 if ((addr&0xFE0000)==0x7E0000 ||//wram
48
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 82552 (addr&0x408000)==0x000000 ||//hardware regs, ram mirrors, other strange junk
49
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 82550 (addr&0x708000)==0x700000)//sram (low parts of banks 70-7D)
50 2 return -1;
51 82550 addr=((addr&0x7F0000)>>1|(addr&0x7FFF));
52 82550 return addr;
53 }
54
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 4578 if (mapper==hirom)
55 {
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 1394 if ((addr&0xFE0000)==0x7E0000 ||//wram
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 1394 (addr&0x408000)==0x000000)//hardware regs, ram mirrors, other strange junk
58 ✗ return -1;
59 1394 return addr&0x3FFFFF;
60 }
61
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 3184 if (mapper==exlorom)
62 {
63
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 1384 if ((addr&0xF00000)==0x700000 ||//wram, sram
64
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 1384 (addr&0x408000)==0x000000)//area that shouldn't be used in lorom
65 ✗ return -1;
66
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 1384 if (addr&0x800000)
67 {
68 84 addr=((addr&0x7F0000)>>1|(addr&0x7FFF));
69 }
70 else
71 {
72 1300 addr=((addr&0x7F0000)>>1|(addr&0x7FFF))+0x400000;
73 }
74 1384 return addr;
75 }
76
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 1800 if (mapper==exhirom)
77 {
78
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 1404 if ((addr&0xFE0000)==0x7E0000 ||//wram
79
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 1404 (addr&0x408000)==0x000000)//hardware regs, ram mirrors, other strange junk
80 ✗ return -1;
81
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 1404 if ((addr&0x800000)==0x000000) return (addr&0x3FFFFF)|0x400000;
82 100 return addr&0x3FFFFF;
83 }
84
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 396 if (mapper==sfxrom)
85 {
86 // Asar emulates GSU1, because apparently emulators don't support the extra ROM data from GSU2
87
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 58 if ((addr&0x600000)==0x600000 ||//wram, sram, open bus
88
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 58 (addr&0x408000)==0x000000 ||//hardware regs, ram mirrors, rom mirrors, other strange junk
89
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 58 (addr&0x800000)==0x800000)//fastrom isn't valid either in superfx
90 ✗ return -1;
91
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 58 if (addr&0x400000) return addr&0x3FFFFF;
92 58 else return (addr&0x7F0000)>>1|(addr&0x7FFF);
93 }
94
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 338 if (mapper==sa1rom)
95 {
96
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 64 if ((addr&0x408000)==0x008000)
97 {
98 64 return sa1banks[(addr&0xE00000)>>21]|((addr&0x1F0000)>>1)|(addr&0x007FFF);
99 }
100 ✗ if ((addr&0xC00000)==0xC00000)
101 {
102 ✗ return sa1banks[((addr&0x100000)>>20)|((addr&0x200000)>>19)]|(addr&0x0FFFFF);
103 }
104 ✗ return -1;
105 }
106
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 274 if (mapper==bigsa1rom)
107 {
108
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 106 if ((addr&0xC00000)==0xC00000)//hirom
109 {
110 48 return (addr&0x3FFFFF)|0x400000;
111 }
112
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 58 if ((addr&0xC00000)==0x000000 || (addr&0xC00000)==0x800000)//lorom
113 {
114
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 58 if ((addr&0x008000)==0x000000) return -1;
115 58 return (addr&0x800000)>>2 | (addr&0x3F0000)>>1 | (addr&0x7FFF);
116 }
117 ✗ return -1;
118 }
119
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 168 if (mapper==norom)
120 {
121 168 return addr;
122 }
123 ✗ return -1;
124 }
125
126 838 inline int pctosnes(int addr)
127 {
128
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 838 if (addr<0) return -1;
129
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 838 if (mapper==lorom)
130 {
131
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 766 if (addr>=0x400000) return -1;
132 766 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
133 766 return addr|0x800000;
134 }
135
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 72 if (mapper==hirom)
136 {
137
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 16 if (addr>=0x400000) return -1;
138 16 return addr|0xC00000;
139 }
140
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 56 if (mapper == exlorom)
141 {
142
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 24 if (addr>=0x800000) return -1;
143
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 24 if (addr&0x400000)
144 {
145 12 addr-=0x400000;
146 12 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
147 12 return addr;
148 }
149 else
150 {
151 12 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
152 12 return addr|0x800000;
153 }
154 }
155
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 32 if (mapper == exhirom)
156 {
157
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 24 if (addr>=0x800000) return -1;
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 24 if (addr&0x400000) return addr;
159 12 return addr|0xC00000;
160 }
161
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 8 if (mapper==sa1rom)
162 {
163
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 4 for (int i=0;i<8;i++)
164 {
165
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 4 if (sa1banks[i]==(addr&0x700000)){ return 0x008000|(i<<21)|((addr&0x0F8000)<<1)|(addr&0x7FFF);}
166 }
167 ✗ return -1;
168 }
169
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 4 if (mapper==bigsa1rom)
170 {
171 ✗ if (addr>=0x800000) return -1;
172 ✗ if ((addr&0x400000)==0x400000)
173 {
174 ✗ return addr|0xC00000;
175 }
176 ✗ if ((addr&0x600000)==0x000000)
177 {
178 ✗ return ((addr<<1)&0x3F0000)|0x8000|(addr&0x7FFF);
179 }
180 ✗ if ((addr&0x600000)==0x200000)
181 {
182 ✗ return 0x800000|((addr<<1)&0x3F0000)|0x8000|(addr&0x7FFF);
183 }
184 ✗ return -1;
185 }
186
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 4 if (mapper==sfxrom)
187 {
188
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 4 if (addr>=0x200000) return -1;
189 4 return ((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
190 }
191 ✗ if (mapper==norom)
192 {
193 ✗ return addr;
194 }
195 ✗ return -1;
196 }
197
198 int getpcfreespace(int size, bool isforcode, bool autoexpand=true, bool respectbankborders=true, bool align=false, unsigned char freespacebyte=0x00);
199 int getsnesfreespace(int size, bool isforcode, bool autoexpand=true, bool respectbankborders=true, bool align=false, unsigned char freespacebyte=0x00);
200
201 void resizerats(int snesaddr, int newlen);
202 void removerats(int snesaddr, unsigned char clean_byte);
203 int ratsstart(int pcaddr);
204
205 bool goodchecksum();
206 void fixchecksum();
207
208 void WalkRatsTags(void(*func)(int loc, int len));//This one calls func() for each RATS tag in the ROM. The pointer is SNES format.
209 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.
210