asar coverage - build #264

src/asar/
File: src/asar/libsmw.h
Date: 2025-02-28 06:49:25
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1 #pragma once
2 #include <vector>
3
4 #include "errors.h"
5 #include "autoarray.h"
6 #include <cstdint>
7
8 extern const unsigned char * romdata;
9 extern int romlen;
10 extern unsigned char freespacebyte;
11 extern asar_error_id openromerror;
12 bool openrom(const char * filename, bool confirm=true);
13 uint32_t closerom(bool save = true);
14
15 enum mapper_t {
16 invalid_mapper,
17 lorom,
18 hirom,
19 sa1rom,
20 bigsa1rom,
21 sfxrom,
22 exlorom,
23 exhirom,
24 norom
25 } extern mapper;
26
27 extern int sa1banks[8];//only 0, 1, 4, 5 are used
28
29 void addromwrite(int pcoffset, int numbytes);
30 void writeromdata(int pcoffset, const void * indata, int numbytes);
31 // optionally don't add the romwrite, because sometimes we did that in an earlier pass already
32 // (or sometimes the bytes are just rom size padding)
33 void writeromdata_byte(int pcoffset, unsigned char indata, bool add_write = true);
34 void writeromdata_bytes(int pcoffset, unsigned char indata, int numbytes, bool add_write = true);
35
36 struct writtenblockdata {
37 int pcoffset;
38 int snesoffset;
39 int numbytes;
40 };
41
42 extern autoarray<writtenblockdata> writtenblocks;
43 extern std::vector<writtenblockdata> found_rats_tags;
44 extern bool found_rats_tags_initialized;
45
46 294457 inline int snestopc(int addr)
47 {
48
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 294457 if (addr<0 || addr>0xFFFFFF) return -1;//not 24bit
49
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 293953 if (mapper==lorom)
50 {
51 // randomdude999: The low pages ($0000-$7FFF) of banks 70-7D are used
52 // for SRAM, the high pages are available for ROM data though
53
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 292549 if ((addr&0xFE0000)==0x7E0000 ||//wram
54
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 292549 (addr&0x408000)==0x000000 ||//hardware regs, ram mirrors, other strange junk
55
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 292533 (addr&0x708000)==0x700000)//sram (low parts of banks 70-7D)
56 16 return -1;
57 292533 addr=((addr&0x7F0000)>>1|(addr&0x7FFF));
58 292533 return addr;
59 }
60
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 1404 if (mapper==hirom)
61 {
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 248 if ((addr&0xFE0000)==0x7E0000 ||//wram
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 248 (addr&0x408000)==0x000000)//hardware regs, ram mirrors, other strange junk
64 ✗ return -1;
65 248 return addr&0x3FFFFF;
66 }
67
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 1156 if (mapper==exlorom)
68 {
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 168 if ((addr&0xF00000)==0x700000 ||//wram, sram
70
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 168 (addr&0x408000)==0x000000)//area that shouldn't be used in lorom
71 ✗ return -1;
72
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 168 if (addr&0x800000)
73 {
74 152 addr=((addr&0x7F0000)>>1|(addr&0x7FFF));
75 }
76 else
77 {
78 16 addr=((addr&0x7F0000)>>1|(addr&0x7FFF))+0x400000;
79 }
80 168 return addr;
81 }
82
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 988 if (mapper==exhirom)
83 {
84
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 196 if ((addr&0xFE0000)==0x7E0000 ||//wram
85
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 196 (addr&0x408000)==0x000000)//hardware regs, ram mirrors, other strange junk
86 ✗ return -1;
87
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 196 if ((addr&0x800000)==0x000000) return (addr&0x3FFFFF)|0x400000;
88 178 return addr&0x3FFFFF;
89 }
90
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 792 if (mapper==sfxrom)
91 {
92 // Asar emulates GSU1, because apparently emulators don't support the extra ROM data from GSU2
93
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 50 if ((addr&0x600000)==0x600000 ||//wram, sram, open bus
94
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 50 (addr&0x408000)==0x000000 ||//hardware regs, ram mirrors, rom mirrors, other strange junk
95
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 50 (addr&0x800000)==0x800000)//fastrom isn't valid either in superfx
96 ✗ return -1;
97
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 50 if (addr&0x400000) return addr&0x3FFFFF;
98 50 else return (addr&0x7F0000)>>1|(addr&0x7FFF);
99 }
100
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 742 if (mapper==sa1rom)
101 {
102
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 130 if ((addr&0x408000)==0x008000)
103 {
104 130 return sa1banks[(addr&0xE00000)>>21]|((addr&0x1F0000)>>1)|(addr&0x007FFF);
105 }
106 ✗ if ((addr&0xC00000)==0xC00000)
107 {
108 ✗ return sa1banks[((addr&0x100000)>>20)|((addr&0x200000)>>19)]|(addr&0x0FFFFF);
109 }
110 ✗ return -1;
111 }
112
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 612 if (mapper==bigsa1rom)
113 {
114
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 234 if ((addr&0xC00000)==0xC00000)//hirom
115 {
116 112 return (addr&0x3FFFFF)|0x400000;
117 }
118
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 122 if ((addr&0xC00000)==0x000000 || (addr&0xC00000)==0x800000)//lorom
119 {
120
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 122 if ((addr&0x008000)==0x000000) return -1;
121 122 return (addr&0x800000)>>2 | (addr&0x3F0000)>>1 | (addr&0x7FFF);
122 }
123 ✗ return -1;
124 }
125
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 378 if (mapper==norom)
126 {
127 378 return addr;
128 }
129 ✗ return -1;
130 }
131
132 152017 inline int pctosnes(int addr)
133 {
134
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 152017 if (addr<0) return -1;
135
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 152017 if (mapper==lorom)
136 {
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 151227 if (addr>=0x400000) return -1;
138
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 151227 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
139 151227 return addr|0x800000;
140 }
141
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 790 if (mapper==hirom)
142 {
143
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 208 if (addr>=0x400000) return -1;
144 208 return addr|0xC00000;
145 }
146
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 582 if (mapper == exlorom)
147 {
148
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 89 if (addr>=0x800000) return -1;
149
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 89 if (addr&0x400000)
150 {
151 11 addr-=0x400000;
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 11 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
153 11 return addr;
154 }
155 else
156 {
157
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 78 addr=((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
158 78 return addr|0x800000;
159 }
160 }
161
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 493 if (mapper == exhirom)
162 {
163
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 101 if (addr>=0x800000) return -1;
164
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 101 if (addr&0x400000) return addr;
165 90 return addr|0xC00000;
166 }
167
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 392 if (mapper==sa1rom)
168 {
169
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 149 for (int i=0;i<8;i++)
170 {
171
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 149 if (sa1banks[i]==(addr&0x700000)){ return 0x008000|(i<<21)|((addr&0x0F8000)<<1)|(addr&0x7FFF);}
172 }
173 ✗ return -1;
174 }
175
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 323 if (mapper==bigsa1rom)
176 {
177
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 101 if (addr>=0x800000) return -1;
178
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 101 if ((addr&0x400000)==0x400000)
179 {
180 48 return addr|0xC00000;
181 }
182
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 53 if ((addr&0x600000)==0x000000)
183 {
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 29 return ((addr<<1)&0x3F0000)|0x8000|(addr&0x7FFF);
185 }
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 24 if ((addr&0x600000)==0x200000)
187 {
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 24 return 0x800000|((addr<<1)&0x3F0000)|0x8000|(addr&0x7FFF);
189 }
190 ✗ return -1;
191 }
192
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 222 if (mapper==sfxrom)
193 {
194
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 39 if (addr>=0x200000) return -1;
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 37 return ((addr<<1)&0x7F0000)|(addr&0x7FFF)|0x8000;
196 }
197
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 183 if (mapper==norom)
198 {
199 183 return addr;
200 }
201 ✗ return -1;
202 }
203
204 int getpcfreespace(int size, int target_bank, bool autoexpand=true, bool respectbankborders=true, bool align=false, bool write_rats=true, int search_start=-1);
205 int getsnesfreespace(int size, int target_bank, bool autoexpand=true, bool respectbankborders=true, bool align=false, bool write_rats=true, int search_start=-1);
206
207 void removerats(int snesaddr, unsigned char clean_byte);
208 void handle_cleared_rats_tags();
209 int ratsstart(int pcaddr);
210
211 void fixchecksum();
212
213 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.
214