asar coverage - build #76

src/asar/
File: src/asar/libsmw.h
Date: 2024-01-18 11:25:05
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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 42752 inline int snestopc(int addr)
40 {
41
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 42752 if (addr<0 || addr>0xFFFFFF) return -1;//not 24bit
42
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 42752 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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 40808 if ((addr&0xFE0000)==0x7E0000 ||//wram
47
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 40808 (addr&0x408000)==0x000000 ||//hardware regs, ram mirrors, other strange junk
48
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 40808 (addr&0x708000)==0x700000)//sram (low parts of banks 70-7D)
49 return -1;
50 40808 addr=((addr&0x7F0000)>>1|(addr&0x7FFF));
51 40808 return addr;
52 }
53 if (mapper==hirom)
54 {
55
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 582 if ((addr&0xFE0000)==0x7E0000 ||//wram
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 582 (addr&0x408000)==0x000000)//hardware regs, ram mirrors, other strange junk
57 return -1;
58 582 return addr&0x3FFFFF;
59 }
60 if (mapper==exlorom)
61 {
62
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 577 if ((addr&0xF00000)==0x700000 ||//wram, sram
63
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 577 (addr&0x408000)==0x000000)//area that shouldn't be used in lorom
64 return -1;
65
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 577 if (addr&0x800000)
66 {
67 42 addr=((addr&0x7F0000)>>1|(addr&0x7FFF));
68 }
69 else
70 {
71 535 addr=((addr&0x7F0000)>>1|(addr&0x7FFF))+0x400000;
72 }
73 577 return addr;
74 }
75 if (mapper==exhirom)
76 {
77
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 587 if ((addr&0xFE0000)==0x7E0000 ||//wram
78
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 587 (addr&0x408000)==0x000000)//hardware regs, ram mirrors, other strange junk
79 return -1;
80
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 587 if ((addr&0x800000)==0x000000) return (addr&0x3FFFFF)|0x400000;
81 50 return addr&0x3FFFFF;
82 }
83 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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 29 if ((addr&0x600000)==0x600000 ||//wram, sram, open bus
87
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 29 (addr&0x408000)==0x000000 ||//hardware regs, ram mirrors, rom mirrors, other strange junk
88
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 29 (addr&0x800000)==0x800000)//fastrom isn't valid either in superfx
89 return -1;
90
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 29 if (addr&0x400000) return addr&0x3FFFFF;
91 29 else return (addr&0x7F0000)>>1|(addr&0x7FFF);
92 }
93 if (mapper==sa1rom)
94 {
95
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 32 if ((addr&0x408000)==0x008000)
96 {
97 32 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 if (mapper==bigsa1rom)
106 {
107
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 53 if ((addr&0xC00000)==0xC00000)//hirom
108 {
109 24 return (addr&0x3FFFFF)|0x400000;
110 }
111
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 29 if ((addr&0xC00000)==0x000000 || (addr&0xC00000)==0x800000)//lorom
112 {
113
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 29 if ((addr&0x008000)==0x000000) return -1;
114 29 return (addr&0x800000)>>2 | (addr&0x3F0000)>>1 | (addr&0x7FFF);
115 }
116 return -1;
117 }
118 if (mapper==norom)
119 {
120 84 return addr;
121 }
122 return -1;
123 }
124
125 369 inline int pctosnes(int addr)
126 {
127
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 369 if (addr<0) return -1;
128
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 369 if (mapper==lorom)
129 {
130
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 333 if (addr>=0x400000) return -1;
131 333 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
132 333 return addr|0x800000;
133 }
134 if (mapper==hirom)
135 {
136
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 8 if (addr>=0x400000) return -1;
137 8 return addr|0xC00000;
138 }
139 if (mapper == exlorom)
140 {
141
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 12 if (addr>=0x800000) return -1;
142
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 12 if (addr&0x400000)
143 {
144 6 addr-=0x400000;
145 6 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
146 6 return addr;
147 }
148 else
149 {
150 6 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
151 6 return addr|0x800000;
152 }
153 }
154 if (mapper == exhirom)
155 {
156
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 12 if (addr>=0x800000) return -1;
157
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 12 if (addr&0x400000) return addr;
158 6 return addr|0xC00000;
159 }
160 if (mapper==sa1rom)
161 {
162
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 2 for (int i=0;i<8;i++)
163 {
164
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 2 if (sa1banks[i]==(addr&0x700000)){ return 0x008000|(i<<21)|((addr&0x0F8000)<<1)|(addr&0x7FFF);}
165 }
166 return -1;
167 }
168 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 if (mapper==sfxrom)
186 {
187
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 2 if (addr>=0x200000) return -1;
188 2 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