source: ps2launchargs/source/uLaunchELF/vmcfs/src/vmc_ps2.c

Last change on this file was 1101, checked in by iritscen, 7 years ago

Added following to ps2launchargs:\n-Source code.\n-DLL needed to run ps2client.\n-Instructions for building uLaunchELF.
  • Property svn:executable set to *
File size: 4.9 KB
Line 
1#include "vmc.h"
2
3
4// Functions specific to the ps2
5
6int readPage ( int fd, unsigned char* page, unsigned int pagenum )
7{
8
9 int unit;
10 unsigned int position;
11
12 unit = ( fd == g_Vmc_Image[ 0 ].fd ) ? 0 : 1;
13
14 if ( g_Vmc_Image[ unit ].ecc_flag )
15 {
16
17 position = pagenum * ( g_Vmc_Image[ unit ].header.page_size + 0x10 );
18
19 }
20 else
21 {
22
23 position = pagenum * g_Vmc_Image[ unit ].header.page_size;
24
25 }
26
27 lseek ( fd, position, SEEK_SET );
28 read ( fd, page, g_Vmc_Image[ unit ].header.page_size );
29
30 return 0;
31
32}
33
34int readCluster ( int fd, unsigned char* cluster, unsigned int clusternum )
35{
36
37 int i, unit;
38 char* Page_Data;
39 unsigned int Page_Num;
40
41 unit = ( fd == g_Vmc_Image[ 0 ].fd ) ? 0 : 1;
42
43 Page_Num = clusternum * g_Vmc_Image[ unit ].header.pages_per_cluster;
44
45 Page_Data = ( char* )malloc ( ( g_Vmc_Image[ unit ].header.page_size + 0xFF ) & ~( unsigned int )0xFF );
46
47 for ( i = 0; i < g_Vmc_Image[ unit ].header.pages_per_cluster; i++ )
48 {
49
50 memset ( Page_Data, g_Vmc_Image[ unit ].erase_byte, g_Vmc_Image[ unit ].header.page_size );
51
52 readPage ( fd, Page_Data, Page_Num + i );
53
54 memcpy ( cluster + ( i * g_Vmc_Image[ unit ].header.page_size ), Page_Data, g_Vmc_Image[ unit ].header.page_size );
55
56 }
57
58 free( Page_Data );
59
60 return 0;
61
62}
63
64int writePage ( int fd, unsigned char* page, unsigned int pagenum )
65{
66
67 int unit;
68 unsigned int position;
69
70 unit = ( fd == g_Vmc_Image[ 0 ].fd ) ? 0 : 1;
71
72 if ( g_Vmc_Image[ unit ].ecc_flag )
73 {
74
75 position = pagenum * ( g_Vmc_Image[ unit ].header.page_size + 0x10 );
76
77 }
78 else
79 {
80
81 position = pagenum * g_Vmc_Image[ unit ].header.page_size;
82
83 }
84
85 lseek ( fd, position, SEEK_SET );
86 write ( fd, page, g_Vmc_Image[ unit ].header.page_size );
87
88 if ( g_Vmc_Image[ unit ].ecc_flag )
89 {
90
91 char* ECC_Data;
92
93 ECC_Data = ( char* )malloc ( ( 0x10 + 0xFF ) & ~( unsigned int )0xFF );
94
95 buildECC ( unit, page, ECC_Data );
96 write ( fd, ECC_Data, 0x10 );
97
98 free( ECC_Data );
99
100 }
101
102 return 0;
103
104}
105
106int writeCluster ( int fd, unsigned char* cluster, unsigned int clusternum )
107{
108
109 int i, unit;
110 char* Page_Data;
111 unsigned int Page_Num;
112
113 unit = ( fd == g_Vmc_Image[ 0 ].fd ) ? 0 : 1;
114
115 Page_Num = clusternum * g_Vmc_Image[ unit ].header.pages_per_cluster;
116
117 Page_Data = ( char* )malloc ( ( g_Vmc_Image[ unit ].header.page_size + 0xFF ) & ~( unsigned int )0xFF );
118
119 for ( i = 0; i < g_Vmc_Image[ unit ].header.pages_per_cluster; i++ )
120 {
121
122 memset ( Page_Data, g_Vmc_Image[ unit ].erase_byte, g_Vmc_Image[ unit ].header.page_size );
123 memcpy ( Page_Data, cluster + ( i * g_Vmc_Image[ unit ].header.page_size ), g_Vmc_Image[ unit ].header.page_size );
124
125 writePage ( fd, Page_Data, Page_Num + i );
126
127 }
128
129 free( Page_Data );
130
131 return 0;
132
133}
134
135int writeClusterPart ( int fd, unsigned char* cluster, unsigned int clusternum, int cluster_offset, int size )
136{
137
138 int i, unit;
139 char* Page_Data;
140 unsigned int Page_Num, Page_offset;
141
142 unit = ( fd == g_Vmc_Image[ 0 ].fd ) ? 0 : 1;
143
144 Page_Num = clusternum * g_Vmc_Image[ unit ].header.pages_per_cluster;
145 Page_offset = cluster_offset;
146
147 Page_Data = ( char* )malloc ( ( g_Vmc_Image[ unit ].header.page_size + 0xFF ) & ~( unsigned int )0xFF );
148
149 for ( i = 0; i < g_Vmc_Image[ unit ].header.pages_per_cluster; i++ )
150 {
151
152 if ( ( cluster_offset >= ( g_Vmc_Image[ unit ].header.page_size * i ) ) && ( cluster_offset < ( g_Vmc_Image[ unit ].header.page_size * ( i + 1 ) ) ) )
153 {
154
155 Page_Num += i;
156 Page_offset = cluster_offset - g_Vmc_Image[ unit ].header.page_size * i;
157
158 memset ( Page_Data, g_Vmc_Image[ unit ].erase_byte, g_Vmc_Image[ unit ].header.page_size );
159 readPage ( fd, Page_Data, Page_Num );
160
161 if ( size > g_Vmc_Image[ unit ].header.page_size - Page_offset )
162 {
163
164 memcpy ( Page_Data + Page_offset, cluster, g_Vmc_Image[ unit ].header.page_size - Page_offset );
165 writePage ( fd, Page_Data, Page_Num );
166
167 Page_Num++;
168
169 memset ( Page_Data, g_Vmc_Image[ unit ].erase_byte, g_Vmc_Image[ unit ].header.page_size );
170 readPage ( fd, Page_Data, Page_Num );
171
172 memcpy ( Page_Data, cluster + ( g_Vmc_Image[ unit ].header.page_size - Page_offset ), size - ( g_Vmc_Image[ unit ].header.page_size - Page_offset ) );
173 writePage ( fd, Page_Data, Page_Num );
174
175 }
176 else
177 {
178
179 memcpy ( Page_Data + Page_offset, cluster, size );
180 writePage ( fd, Page_Data, Page_Num );
181
182 }
183
184 }
185
186 }
187
188 free( Page_Data );
189
190 return 0;
191
192}
193
194int eraseBlock ( int fd, unsigned int block )
195{
196
197 int i, unit;
198 char* Page_Data;
199 unsigned int Page_Num;
200
201 unit = ( fd == g_Vmc_Image[ 0 ].fd ) ? 0 : 1;
202
203 Page_Data = ( char* )malloc ( ( g_Vmc_Image[ unit ].header.page_size + 0xFF ) & ~( unsigned int )0xFF );
204
205 Page_Num = block * g_Vmc_Image[ unit ].header.pages_per_block;
206
207 memset ( Page_Data, g_Vmc_Image[ unit ].erase_byte, g_Vmc_Image[ unit ].header.page_size );
208
209 for ( i = 0; i < g_Vmc_Image[ unit ].header.pages_per_block; i++ )
210 {
211
212 writePage ( fd, Page_Data, Page_Num + i );
213
214 }
215
216 free( Page_Data );
217
218 return 0;
219
220}
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