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Rev | Author | Line No. | Line |
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72 | diamond | 1 | ; System function 70 - files with long names (LFN) |
71 | diamond | 2 | ; diamond, 2006 |
3 | |||
4 | iglobal |
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5 | ; in this table names must be in lowercase |
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6 | rootdirs: |
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75 | diamond | 7 | db 2,'rd' |
8 | dd fs_OnRamdisk |
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9 | dd fs_NextRamdisk |
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10 | db 7,'ramdisk' |
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11 | dd fs_OnRamdisk |
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12 | dd fs_NextRamdisk |
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13 | db 2,'fd' |
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14 | dd fs_OnFloppy |
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15 | dd fs_NextFloppy |
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16 | db 10,'floppydisk' |
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17 | dd fs_OnFloppy |
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18 | dd fs_NextFloppy |
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19 | db 3,'hd0' |
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20 | dd fs_OnHd0 |
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21 | dd fs_NextHd0 |
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22 | db 3,'hd1' |
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23 | dd fs_OnHd1 |
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24 | dd fs_NextHd1 |
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25 | db 3,'hd2' |
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26 | dd fs_OnHd2 |
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27 | dd fs_NextHd2 |
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28 | db 3,'hd3' |
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29 | dd fs_OnHd3 |
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30 | dd fs_NextHd3 |
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87 | mario79 | 31 | ;********************************************** |
32 | db 3,'cd0' |
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33 | dd fs_OnCd0 |
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34 | dd fs_NextCd |
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35 | db 3,'cd1' |
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36 | dd fs_OnCd1 |
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37 | dd fs_NextCd |
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38 | db 3,'cd2' |
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39 | dd fs_OnCd2 |
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40 | dd fs_NextCd |
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41 | db 3,'cd3' |
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42 | dd fs_OnCd3 |
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43 | dd fs_NextCd |
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44 | ;*********************************************** |
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75 | diamond | 45 | db 0 |
46 | |||
87 | mario79 | 47 | |
75 | diamond | 48 | virtual_root_query: |
49 | dd fs_HasRamdisk |
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78 | diamond | 50 | db 'rd',0 |
75 | diamond | 51 | dd fs_HasFloppy |
78 | diamond | 52 | db 'fd',0 |
75 | diamond | 53 | dd fs_HasHd0 |
78 | diamond | 54 | db 'hd0',0 |
75 | diamond | 55 | dd fs_HasHd1 |
78 | diamond | 56 | db 'hd1',0 |
75 | diamond | 57 | dd fs_HasHd2 |
78 | diamond | 58 | db 'hd2',0 |
75 | diamond | 59 | dd fs_HasHd3 |
78 | diamond | 60 | db 'hd3',0 |
87 | mario79 | 61 | ;********************************************** |
62 | dd fs_HasCd0 |
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63 | db 'cd0',0 |
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64 | dd fs_HasCd1 |
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65 | db 'cd1',0 |
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66 | dd fs_HasCd2 |
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67 | db 'cd2',0 |
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68 | dd fs_HasCd3 |
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69 | db 'cd3',0 |
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70 | ;********************************************** |
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75 | diamond | 71 | dd 0 |
71 | diamond | 72 | endg |
73 | |||
74 | file_system_lfn: |
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75 | ; in: eax->fileinfo block |
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76 | ; operation codes: |
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72 | diamond | 77 | ; 0 : read file |
75 | diamond | 78 | ; 1 : read folder |
83 | diamond | 79 | ; 2 : create/rewrite file |
72 | diamond | 80 | ; 3 : write/append to file - not implemented yet |
84 | diamond | 81 | ; 4 : set end of file - not implemented yet |
86 | diamond | 82 | ; 5 : get file/directory attributes structure |
83 | ; 6 : set file/directory attributes structure |
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84 | ; 7 : start application - not implemented yet |
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85 | ; 8 : delete file - not implemented yet |
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86 | ; 9 : create directory - not implemented yet |
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87 | ; 10: rename file/directory - not implemented yet |
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71 | diamond | 88 | |
75 | diamond | 89 | add eax, std_application_base_address |
71 | diamond | 90 | ; parse file name |
75 | diamond | 91 | xchg ebx, eax |
92 | lea esi, [ebx+20] |
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93 | lodsb |
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84 | diamond | 94 | test al, al |
95 | jnz @f |
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96 | mov esi, [esi] |
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97 | add esi, std_application_base_address |
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98 | lodsb |
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99 | @@: |
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75 | diamond | 100 | cmp al, '/' |
101 | jz @f |
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71 | diamond | 102 | .notfound: |
75 | diamond | 103 | mov dword [esp+36], 5 ; file not found |
104 | ret |
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71 | diamond | 105 | @@: |
75 | diamond | 106 | cmp byte [esi], 0 |
107 | jz .rootdir |
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108 | mov edi, rootdirs-8 |
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109 | xor ecx, ecx |
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110 | push esi |
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71 | diamond | 111 | .scan1: |
75 | diamond | 112 | pop esi |
113 | add edi, ecx |
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114 | scasd |
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115 | scasd |
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116 | mov cl, byte [edi] |
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117 | jecxz .notfound |
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118 | inc edi |
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119 | push esi |
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71 | diamond | 120 | @@: |
75 | diamond | 121 | lodsb |
122 | or al, 20h |
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123 | scasb |
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124 | loopz @b |
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125 | jnz .scan1 |
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126 | lodsb |
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127 | cmp al, '/' |
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128 | jz .found1 |
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129 | test al, al |
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130 | jnz .scan1 |
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131 | pop eax |
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71 | diamond | 132 | ; directory /xxx |
133 | .maindir: |
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75 | diamond | 134 | cmp dword [ebx], 1 |
135 | jnz .access_denied |
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136 | xor eax, eax |
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137 | mov ebp, [ebx+12] |
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138 | mov edx, [ebx+16] |
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139 | add edx, std_application_base_address |
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78 | diamond | 140 | push dword [ebx+4] ; first block |
141 | mov ebx, [ebx+8] ; flags |
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75 | diamond | 142 | mov esi, [edi+4] |
78 | diamond | 143 | ; ebx=flags, [esp]=first block, ebp=number of blocks, edx=return area, esi='Next' handler |
75 | diamond | 144 | mov edi, edx |
145 | mov ecx, 32/4 |
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146 | rep stosd |
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147 | mov byte [edx], 1 ; version |
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148 | .maindir_loop: |
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149 | call esi |
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150 | jc .maindir_done |
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151 | inc dword [edx+8] |
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78 | diamond | 152 | dec dword [esp] |
75 | diamond | 153 | jns .maindir_loop |
154 | dec ebp |
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155 | js .maindir_loop |
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156 | inc dword [edx+4] |
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157 | mov dword [edi], 0x10 ; attributes: folder |
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158 | mov dword [edi+4], 1 ; name type: UNICODE |
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159 | push eax |
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160 | xor eax, eax |
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161 | add edi, 8 |
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162 | mov ecx, 40/4-2 |
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163 | rep stosd |
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164 | pop eax |
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165 | push eax edx |
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166 | ; convert number in eax to decimal UNICODE string |
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167 | push edi |
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168 | push -'0' |
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169 | mov cl, 10 |
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170 | @@: |
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171 | xor edx, edx |
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172 | div ecx |
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173 | push edx |
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174 | test eax, eax |
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175 | jnz @b |
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176 | @@: |
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177 | pop eax |
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178 | add al, '0' |
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78 | diamond | 179 | stosb |
180 | test bl, 1 ; UNICODE name? |
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181 | jz .ansi2 |
||
182 | mov byte [edi], 0 |
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183 | inc edi |
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184 | .ansi2: |
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185 | test al, al |
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75 | diamond | 186 | jnz @b |
187 | mov byte [edi-1], 0 |
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188 | pop edi |
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78 | diamond | 189 | ; UNICODE name length is 520 bytes, ANSI - 264 |
75 | diamond | 190 | add edi, 520 |
78 | diamond | 191 | test bl, 1 |
192 | jnz @f |
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193 | sub edi, 520-264 |
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194 | @@: |
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75 | diamond | 195 | pop edx eax |
196 | jmp .maindir_loop |
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197 | .maindir_done: |
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78 | diamond | 198 | pop eax |
199 | mov ebx, [edx+4] |
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75 | diamond | 200 | xor eax, eax |
201 | dec ebp |
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202 | js @f |
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203 | mov al, ERROR_END_OF_FILE |
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204 | @@: |
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205 | mov [esp+36], eax |
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206 | mov [esp+24], ebx |
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207 | ret |
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71 | diamond | 208 | ; directory / |
209 | .rootdir: |
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75 | diamond | 210 | cmp dword [ebx], 1 ; read folder? |
211 | jz .readroot |
||
212 | .access_denied: |
||
213 | mov dword [esp+36], 10 ; access denied |
||
214 | ret |
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71 | diamond | 215 | |
75 | diamond | 216 | .readroot: |
217 | ; virtual root folder - special handler |
||
218 | mov esi, virtual_root_query |
||
219 | mov ebp, [ebx+12] |
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220 | mov edx, [ebx+16] |
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221 | add edx, std_application_base_address |
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78 | diamond | 222 | push dword [ebx+4] ; first block |
223 | mov ebx, [ebx+8] ; flags |
||
75 | diamond | 224 | xor eax, eax |
78 | diamond | 225 | ; eax=0, [esp]=first block, ebx=flags, ebp=number of blocks, edx=return area |
75 | diamond | 226 | mov edi, edx |
227 | mov ecx, 32/4 |
||
228 | rep stosd |
||
229 | mov byte [edx], 1 ; version |
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230 | .readroot_loop: |
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231 | cmp dword [esi], eax |
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232 | jz .readroot_done |
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233 | call dword [esi] |
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234 | add esi, 4 |
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235 | test eax, eax |
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236 | jnz @f |
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237 | .readroot_next: |
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238 | or ecx, -1 |
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239 | xchg esi, edi |
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78 | diamond | 240 | repnz scasb |
75 | diamond | 241 | xchg esi, edi |
242 | jmp .readroot_loop |
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243 | @@: |
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244 | xor eax, eax |
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245 | inc dword [edx+8] |
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78 | diamond | 246 | dec dword [esp] |
75 | diamond | 247 | jns .readroot_next |
248 | dec ebp |
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249 | js .readroot_next |
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250 | inc dword [edx+4] |
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251 | mov dword [edi], 0x10 ; attributes: folder |
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252 | mov dword [edi+4], 1 ; name type: UNICODE |
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253 | add edi, 8 |
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254 | mov ecx, 40/4-2 |
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255 | rep stosd |
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256 | push edi |
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257 | @@: |
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78 | diamond | 258 | lodsb |
259 | stosb |
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260 | test bl, 1 |
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261 | jz .ansi |
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262 | mov byte [edi], 0 |
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263 | inc edi |
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264 | .ansi: |
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75 | diamond | 265 | test eax, eax |
266 | jnz @b |
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267 | pop edi |
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268 | add edi, 520 |
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78 | diamond | 269 | test bl, 1 |
270 | jnz .readroot_loop |
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271 | sub edi, 520-264 |
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75 | diamond | 272 | jmp .readroot_loop |
273 | .readroot_done: |
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78 | diamond | 274 | pop eax |
275 | mov ebx, [edx+4] |
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75 | diamond | 276 | xor eax, eax |
277 | dec ebp |
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278 | js @f |
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279 | mov al, ERROR_END_OF_FILE |
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280 | @@: |
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281 | mov [esp+36], eax |
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282 | mov [esp+24], ebx |
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283 | ret |
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284 | |||
71 | diamond | 285 | .found1: |
75 | diamond | 286 | pop eax |
287 | cmp byte [esi], 0 |
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288 | jz .maindir |
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71 | diamond | 289 | ; read partition number |
75 | diamond | 290 | xor ecx, ecx |
291 | xor eax, eax |
||
71 | diamond | 292 | @@: |
75 | diamond | 293 | lodsb |
294 | cmp al, '/' |
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295 | jz .done1 |
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296 | test al, al |
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297 | jz .done1 |
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298 | sub al, '0' |
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299 | cmp al, 9 |
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300 | ja .notfound |
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301 | imul ecx, 10 |
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302 | add ecx, eax |
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303 | jmp @b |
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71 | diamond | 304 | .done1: |
75 | diamond | 305 | test ecx, ecx |
306 | jz .notfound |
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307 | test al, al |
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308 | jnz @f |
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309 | dec esi |
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71 | diamond | 310 | @@: |
75 | diamond | 311 | ; now [edi] contains handler address, ecx - partition number, |
312 | ; esi points to ASCIIZ string - rest of name |
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313 | jmp dword [edi] |
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71 | diamond | 314 | |
315 | ; handlers for devices |
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75 | diamond | 316 | ; in: ecx = 0 => query virtual directory /xxx |
71 | diamond | 317 | ; in: ecx = partition number |
318 | ; esi -> relative (for device) name |
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319 | ; ebx -> fileinfo |
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320 | ; out: [esp+36]=image of eax, [esp+24]=image of ebx |
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321 | |||
322 | fs_OnRamdisk: |
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75 | diamond | 323 | cmp ecx, 1 |
324 | jnz file_system_lfn.notfound |
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325 | mov eax, [ebx] |
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83 | diamond | 326 | cmp eax, fs_NumRamdiskServices |
327 | jae .not_impl |
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75 | diamond | 328 | mov ecx, [ebx+12] |
329 | mov edx, [ebx+16] |
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330 | add edx, std_application_base_address |
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331 | add ebx, 4 |
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332 | call dword [fs_RamdiskServices + eax*4] |
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333 | mov [esp+36], eax |
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334 | mov [esp+24], ebx |
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335 | ret |
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71 | diamond | 336 | .not_impl: |
75 | diamond | 337 | mov dword [esp+36], 2 ; not implemented |
338 | ret |
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71 | diamond | 339 | |
86 | diamond | 340 | fs_NotImplemented: |
341 | mov eax, 2 |
||
342 | ret |
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343 | |||
71 | diamond | 344 | fs_RamdiskServices: |
75 | diamond | 345 | dd fs_RamdiskRead |
346 | dd fs_RamdiskReadFolder |
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83 | diamond | 347 | dd fs_RamdiskRewrite |
86 | diamond | 348 | dd fs_NotImplemented |
349 | dd fs_NotImplemented |
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350 | dd fs_RamdiskGetFileInfo |
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351 | dd fs_RamdiskSetFileInfo |
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83 | diamond | 352 | fs_NumRamdiskServices = ($ - fs_RamdiskServices)/4 |
71 | diamond | 353 | |
354 | fs_OnFloppy: |
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75 | diamond | 355 | cmp ecx, 2 |
356 | ja file_system_lfn.notfound |
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357 | mov eax, [ebx] |
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83 | diamond | 358 | cmp eax, fs_NumFloppyServices |
359 | jae fs_OnRamdisk.not_impl |
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75 | diamond | 360 | call reserve_flp |
361 | mov [flp_number], cl |
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362 | mov ecx, [ebx+12] |
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363 | mov edx, [ebx+16] |
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364 | add edx, std_application_base_address |
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365 | add ebx, 4 |
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366 | call dword [fs_FloppyServices + eax*4] |
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367 | and [flp_status], 0 |
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368 | mov [esp+36], eax |
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369 | mov [esp+24], ebx |
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370 | ret |
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71 | diamond | 371 | |
372 | fs_FloppyServices: |
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75 | diamond | 373 | dd fs_FloppyRead |
374 | dd fs_FloppyReadFolder |
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83 | diamond | 375 | dd fs_FloppyRewrite |
86 | diamond | 376 | dd fs_NotImplemented |
377 | dd fs_NotImplemented |
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378 | dd fs_FloppyGetFileInfo |
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379 | dd fs_FloppySetFileInfo |
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83 | diamond | 380 | fs_NumFloppyServices = ($ - fs_FloppyServices)/4 |
71 | diamond | 381 | |
382 | fs_OnHd0: |
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75 | diamond | 383 | call reserve_hd1 |
384 | mov [hdbase], 0x1F0 |
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385 | mov [hdid], 0 |
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386 | push 1 |
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387 | jmp fs_OnHd |
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71 | diamond | 388 | fs_OnHd1: |
75 | diamond | 389 | call reserve_hd1 |
390 | mov [hdbase], 0x1F0 |
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391 | mov [hdid], 0x10 |
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392 | push 2 |
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393 | jmp fs_OnHd |
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71 | diamond | 394 | fs_OnHd2: |
75 | diamond | 395 | call reserve_hd1 |
396 | mov [hdbase], 0x170 |
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397 | mov [hdid], 0 |
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398 | push 3 |
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399 | jmp fs_OnHd |
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71 | diamond | 400 | fs_OnHd3: |
75 | diamond | 401 | call reserve_hd1 |
402 | mov [hdbase], 0x170 |
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403 | mov [hdid], 0x10 |
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404 | push 4 |
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71 | diamond | 405 | fs_OnHd: |
75 | diamond | 406 | pop eax |
407 | mov [hdpos], eax |
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408 | cmp ecx, 0x100 |
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409 | jae .nf |
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410 | cmp cl, [0x40001+eax] |
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411 | jbe @f |
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412 | .nf: |
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413 | and [hd1_status], 0 |
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414 | mov dword [esp+36], 5 ; not found |
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415 | ret |
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71 | diamond | 416 | @@: |
75 | diamond | 417 | mov [fat32part], ecx |
418 | push ebx esi |
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419 | call choice_necessity_partition_1 |
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420 | pop esi ebx |
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421 | mov ecx, [ebx+12] |
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422 | mov edx, [ebx+16] |
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423 | add edx, std_application_base_address |
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424 | mov eax, [ebx] |
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83 | diamond | 425 | cmp eax, fs_NumHdServices |
426 | jae .not_impl |
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75 | diamond | 427 | add ebx, 4 |
428 | call dword [fs_HdServices + eax*4] |
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429 | and [hd1_status], 0 |
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430 | mov [esp+36], eax |
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431 | mov [esp+24], ebx |
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432 | ret |
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433 | .not_impl: |
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434 | and [hd1_status], 0 |
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435 | mov dword [esp+36], 2 ; not implemented |
||
436 | ret |
||
71 | diamond | 437 | |
438 | fs_HdServices: |
||
75 | diamond | 439 | dd fs_HdRead |
440 | dd fs_HdReadFolder |
||
83 | diamond | 441 | dd fs_HdRewrite |
86 | diamond | 442 | dd fs_NotImplemented |
443 | dd fs_NotImplemented |
||
444 | dd fs_HdGetFileInfo |
||
445 | dd fs_HdSetFileInfo |
||
83 | diamond | 446 | fs_NumHdServices = ($ - fs_HdServices)/4 |
75 | diamond | 447 | |
87 | mario79 | 448 | ;******************************************************* |
449 | fs_OnCd0: |
||
450 | call reserve_cd |
||
451 | mov [ChannelNumber],1 |
||
452 | mov [DiskNumber],0 |
||
453 | push 6 |
||
454 | jmp fs_OnCd |
||
455 | fs_OnCd1: |
||
456 | call reserve_cd |
||
457 | mov [ChannelNumber],1 |
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458 | mov [DiskNumber],1 |
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459 | push 4 |
||
460 | jmp fs_OnCd |
||
461 | fs_OnCd2: |
||
462 | call reserve_cd |
||
463 | mov [ChannelNumber],2 |
||
464 | mov [DiskNumber],0 |
||
465 | push 2 |
||
466 | jmp fs_OnCd |
||
467 | fs_OnCd3: |
||
468 | call reserve_cd |
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469 | mov [ChannelNumber],2 |
||
470 | mov [DiskNumber],1 |
||
471 | push 0 |
||
472 | fs_OnCd: |
||
473 | |||
474 | pop eax |
||
475 | mov [hdpos], eax |
||
476 | cmp ecx, 0x100 |
||
477 | jae .nf |
||
478 | push cx bx |
||
479 | mov cl,al |
||
480 | mov bl,[0x40001] |
||
481 | shr bl,cl |
||
482 | test bl,2 |
||
483 | pop bx cx |
||
484 | |||
485 | jnz @f |
||
486 | .nf: |
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487 | and [cd_status], 0 |
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488 | mov dword [esp+36], 5 ; not found |
||
489 | ret |
||
490 | @@: |
||
491 | mov ecx, [ebx+12] |
||
492 | mov edx, [ebx+16] |
||
493 | add edx, std_application_base_address |
||
494 | mov eax, [ebx] |
||
495 | cmp eax, 1 |
||
496 | ja .not_impl |
||
497 | add ebx, 4 |
||
498 | call dword [fs_CdServices + eax*4] |
||
499 | and [cd_status], 0 |
||
500 | mov [esp+36], eax |
||
501 | mov [esp+24], ebx |
||
502 | ret |
||
503 | .not_impl: |
||
504 | and [hd1_status], 0 |
||
505 | mov dword [esp+36], 2 ; not implemented |
||
506 | ret |
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507 | |||
508 | fs_CdServices: |
||
509 | dd fs_CdRead |
||
510 | dd fs_CdReadFolder |
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511 | ;******************************************************* |
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512 | |||
75 | diamond | 513 | fs_HasRamdisk: |
514 | mov al, 1 ; we always have ramdisk |
||
515 | ret |
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516 | |||
517 | fs_HasFloppy: |
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518 | cmp byte [0x40000], 0 |
||
519 | setnz al |
||
520 | ret |
||
521 | |||
522 | fs_HasHd0: |
||
523 | mov al, [0x40001] |
||
524 | and al, 11000000b |
||
525 | cmp al, 01000000b |
||
526 | setz al |
||
527 | ret |
||
528 | fs_HasHd1: |
||
529 | mov al, [0x40001] |
||
530 | and al, 00110000b |
||
531 | cmp al, 00010000b |
||
532 | setz al |
||
533 | ret |
||
534 | fs_HasHd2: |
||
535 | mov al, [0x40001] |
||
536 | and al, 00001100b |
||
537 | cmp al, 00000100b |
||
538 | setz al |
||
539 | ret |
||
540 | fs_HasHd3: |
||
541 | mov al, [0x40001] |
||
542 | and al, 00000011b |
||
543 | cmp al, 00000001b |
||
544 | setz al |
||
545 | ret |
||
546 | |||
87 | mario79 | 547 | ;******************************************************* |
548 | fs_HasCd0: |
||
549 | mov al, [0x40001] |
||
550 | and al, 11000000b |
||
551 | cmp al, 10000000b |
||
552 | setz al |
||
553 | ret |
||
554 | fs_HasCd1: |
||
555 | mov al, [0x40001] |
||
556 | and al, 00110000b |
||
557 | cmp al, 00100000b |
||
558 | setz al |
||
559 | ret |
||
560 | fs_HasCd2: |
||
561 | mov al, [0x40001] |
||
562 | and al, 00001100b |
||
563 | cmp al, 00001000b |
||
564 | setz al |
||
565 | ret |
||
566 | fs_HasCd3: |
||
567 | mov al, [0x40001] |
||
568 | and al, 00000011b |
||
569 | cmp al, 00000010b |
||
570 | setz al |
||
571 | ret |
||
572 | ;******************************************************* |
||
573 | |||
75 | diamond | 574 | ; fs_NextXXX functions: |
575 | ; in: eax = partition number, from which start to scan |
||
576 | ; out: CF=1 => no more partitions |
||
577 | ; CF=0 => eax=next partition number |
||
578 | |||
579 | fs_NextRamdisk: |
||
580 | ; we always have /rd/1 |
||
581 | test eax, eax |
||
582 | stc |
||
583 | jnz @f |
||
584 | mov al, 1 |
||
585 | clc |
||
586 | @@: |
||
587 | ret |
||
588 | |||
589 | fs_NextFloppy: |
||
590 | ; we have /fd/1 iff (([0x40000] and 0xF0) != 0) and /fd/2 iff (([0x40000] and 0x0F) != 0) |
||
591 | test byte [0x40000], 0xF0 |
||
592 | jz .no1 |
||
593 | test eax, eax |
||
594 | jnz .no1 |
||
595 | inc eax |
||
596 | ret ; CF cleared |
||
597 | .no1: |
||
598 | test byte [0x40000], 0x0F |
||
599 | jz .no2 |
||
600 | cmp al, 2 |
||
601 | jae .no2 |
||
602 | mov al, 2 |
||
603 | clc |
||
604 | ret |
||
605 | .no2: |
||
606 | stc |
||
607 | ret |
||
608 | |||
609 | ; on hdx, we have partitions from 1 to [0x40002+x] |
||
610 | fs_NextHd0: |
||
611 | push 0 |
||
612 | jmp fs_NextHd |
||
613 | fs_NextHd1: |
||
614 | push 1 |
||
615 | jmp fs_NextHd |
||
616 | fs_NextHd2: |
||
617 | push 2 |
||
618 | jmp fs_NextHd |
||
619 | fs_NextHd3: |
||
620 | push 3 |
||
621 | fs_NextHd: |
||
622 | pop ecx |
||
623 | movzx ecx, byte [0x40002+ecx] |
||
624 | cmp eax, ecx |
||
625 | jae fs_NextFloppy.no2 |
||
626 | inc eax |
||
627 | clc |
||
628 | ret |
||
87 | mario79 | 629 | |
630 | ;******************************************************* |
||
631 | fs_NextCd: |
||
632 | ; we always have /cdX/1 |
||
633 | test eax, eax |
||
634 | stc |
||
635 | jnz @f |
||
636 | mov al, 1 |
||
637 | clc |
||
638 | @@: |
||
639 | ret |
||
640 | ;******************************************************* |
||
641 |