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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
593 | mikedld | 2 | ;; ;; |
431 | serge | 3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;; ;; |
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593 | mikedld | 7 | ;; System service for filesystem call ;; |
8 | ;; (C) 2004 Ville Turjanmaa, License: GPL ;; |
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9 | ;; 29.04.2006 Elimination of hangup after the ;; |
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10 | ;; expiration hd_wait_timeout (for LBA) - Mario79 ;; |
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431 | serge | 11 | ;; 15.01.2005 get file size/attr/date, ;; |
12 | ;; file_append (only for hd) - ATV ;; |
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593 | mikedld | 13 | ;; 23.11.2004 test if hd/partition is set - ATV ;; |
14 | ;; 18.11.2004 get_disk_info and more error codes - ATV ;; |
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15 | ;; 08.11.2004 expand_pathz and rename (only for hd) - ATV ;; |
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16 | ;; 20.10.2004 Makedir/Removedir (only for hd) - ATV ;; |
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17 | ;; ;; |
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431 | serge | 18 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ha | 19 | |
593 | mikedld | 20 | $Revision: 593 $ |
21 | |||
22 | |||
1 | ha | 23 | iglobal |
24 | dir0: db 'HARDDISK ' |
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25 | db 'RAMDISK ' |
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26 | db 'FLOPPYDISK ' |
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27 | db 0 |
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28 | |||
29 | dir1: db 'FIRST ' |
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30 | db 'SECOND ' |
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31 | db 'THIRD ' |
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32 | db 'FOURTH ' |
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33 | db 0 |
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34 | |||
35 | not_select_IDE db 0 |
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36 | |||
37 | hd_address_table: dd 0x1f0,0x00,0x1f0,0x10 |
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38 | dd 0x170,0x00,0x170,0x10 |
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39 | endg |
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40 | |||
74 | mario79 | 41 | file_system: |
42 | |||
1 | ha | 43 | ; IN: |
44 | ; |
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133 | diamond | 45 | ; eax = 0 ; read file /RamDisk/First 6 |
1 | ha | 46 | ; eax = 8 ; lba read |
47 | ; eax = 15 ; get_disk_info |
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48 | ; |
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49 | ; OUT: |
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50 | ; |
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51 | ; eax = 0 : read ok |
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61 | halyavin | 52 | ; eax = 1 : no hd base and/or partition defined |
71 | diamond | 53 | ; eax = 2 : function is unsupported for this FS |
1 | ha | 54 | ; eax = 3 : unknown FS |
55 | ; eax = 4 : partition not defined at hd |
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56 | ; eax = 5 : file not found |
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57 | ; eax = 6 : end of file |
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58 | ; eax = 7 : memory pointer not in application area |
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59 | ; eax = 8 : disk full |
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60 | ; eax = 9 : fat table corrupted |
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61 | ; eax = 10 : access denied |
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83 | diamond | 62 | ; eax = 11 : disk error |
1 | ha | 63 | ; |
64 | ; ebx = size |
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65 | |||
61 | halyavin | 66 | ; \begin{diamond}[18.03.2006] |
67 | ; for subfunction 16 (start application) error codes must be negative |
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64 | mario79 | 68 | ; because positive values are valid PIDs |
61 | halyavin | 69 | ; so possible return values are: |
70 | ; eax > 0 : process created, eax=PID |
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71 | |||
72 | ; -0x10 <= eax < 0 : -eax is filesystem error code: |
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73 | ; eax = -1 = 0xFFFFFFFF : no hd base and/or partition defined |
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74 | ; eax = -3 = 0xFFFFFFFD : unknown FS |
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75 | ; eax = -5 = 0xFFFFFFFB : file not found |
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76 | ; eax = -6 = 0xFFFFFFFA : unexpected end of file (probably not executable file) |
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77 | ; eax = -9 = 0xFFFFFFF7 : fat table corrupted |
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78 | ; eax = -10 = 0xFFFFFFF6 : access denied |
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79 | |||
80 | ; -0x20 <= eax < -0x10: eax is process creation error code: |
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81 | ; eax = -0x20 = 0xFFFFFFE0 : too many processes |
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82 | ; eax = -0x1F = 0xFFFFFFE1 : not Menuet/Kolibri executable |
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83 | ; eax = -0x1E = 0xFFFFFFE2 : no memory |
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84 | |||
85 | ; ebx is not changed |
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86 | |||
87 | ; \end{diamond}[18.03.2006] |
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88 | |||
1 | ha | 89 | ; Extract parameters |
465 | serge | 90 | ; add eax, std_application_base_address ; abs start of info block |
1 | ha | 91 | |
92 | cmp dword [eax+0],15 ; GET_DISK_INFO |
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93 | je fs_info |
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94 | |||
379 | serge | 95 | cmp dword [CURRENT_TASK],1 ; no memory checks for kernel requests |
1 | ha | 96 | jz no_checks_for_kernel |
97 | mov edx,eax |
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98 | cmp dword [eax+0],1 |
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99 | jnz .usual_check |
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100 | mov ebx,[eax+12] |
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465 | serge | 101 | ; add ebx,std_application_base_address |
1 | ha | 102 | mov ecx,[eax+8] |
103 | call check_region |
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104 | test eax,eax |
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105 | jnz area_in_app_mem |
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379 | serge | 106 | |
1 | ha | 107 | .error_output: |
108 | mov esi,buffer_failed |
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109 | call sys_msg_board_str |
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61 | halyavin | 110 | ; mov eax,7 |
1 | ha | 111 | mov dword [esp+36],7 |
112 | ret |
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113 | iglobal |
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61 | halyavin | 114 | buffer_failed db 'K : Buffer check failed',13,10,0 |
379 | serge | 115 | endg |
1 | ha | 116 | .usual_check: |
117 | cmp dword [eax+0],0 |
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118 | mov ecx,512 |
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119 | jnz .small_size |
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120 | mov ecx,[eax+8] |
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121 | shl ecx,9 |
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122 | .small_size: |
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123 | mov ebx,[eax+12] |
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465 | serge | 124 | ; add ebx,std_application_base_address |
1 | ha | 125 | call check_region |
126 | test eax,eax |
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127 | jz .error_output |
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128 | area_in_app_mem: |
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129 | mov eax,edx |
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130 | no_checks_for_kernel: |
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131 | |||
132 | fs_read: |
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133 | |||
134 | mov ebx,[eax+20] ; program wants root directory ? |
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135 | test bl,bl |
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136 | je fs_getroot |
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137 | test bh,bh |
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138 | jne fs_noroot |
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139 | fs_getroot: |
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61 | halyavin | 140 | ; \begin{diamond}[18.03.2006] |
141 | ; root - only read is allowed |
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142 | ; other operations return "access denied", eax=10 |
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143 | ; (execute operation returns eax=-10) |
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64 | mario79 | 144 | cmp dword [eax], 0 |
145 | jz .read_root |
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147 | diamond | 146 | mov dword [esp+36], 10 |
64 | mario79 | 147 | ret |
61 | halyavin | 148 | .read_root: |
149 | ; \end{diamond}[18.03.2006] |
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1 | ha | 150 | mov esi,dir0 |
151 | mov edi,[eax+12] |
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465 | serge | 152 | ; add edi,std_application_base_address |
1 | ha | 153 | mov ecx,11 |
61 | halyavin | 154 | push ecx |
64 | mario79 | 155 | ; cld ; already is |
1 | ha | 156 | rep movsb |
61 | halyavin | 157 | mov al,0x10 |
1 | ha | 158 | stosb |
159 | add edi,32-11-1 |
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61 | halyavin | 160 | pop ecx |
1 | ha | 161 | rep movsb |
162 | stosb |
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61 | halyavin | 163 | and dword [esp+36],0 ; ok read |
1 | ha | 164 | mov dword [esp+24],32*2 ; size of root |
165 | ret |
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166 | |||
167 | fs_info: ;start of code - Mihasik |
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61 | halyavin | 168 | push eax |
1 | ha | 169 | cmp [eax+21],byte 'h' |
170 | je fs_info_h |
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171 | cmp [eax+21],byte 'H' |
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172 | je fs_info_h |
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173 | cmp [eax+21],byte 'r' |
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174 | je fs_info_r |
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175 | cmp [eax+21],byte 'R' |
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176 | je fs_info_r |
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177 | mov eax,3 ;if unknown disk |
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178 | xor ebx,ebx |
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179 | xor ecx,ecx |
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180 | xor edx,edx |
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181 | jmp fs_info1 |
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182 | fs_info_r: |
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183 | call ramdisk_free_space ;if ramdisk |
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184 | mov ecx,edi ;free space in ecx |
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185 | shr ecx,9 ;free clusters |
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186 | mov ebx,2847 ;total clusters |
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187 | mov edx,512 ;cluster size |
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188 | xor eax,eax ;always 0 |
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189 | jmp fs_info1 |
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190 | fs_info_h: ;if harddisk |
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191 | call get_hd_info |
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192 | fs_info1: |
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193 | pop edi |
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194 | mov [esp+36],eax |
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195 | mov [esp+24],ebx ; total clusters on disk |
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196 | mov [esp+32],ecx ; free clusters on disk |
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197 | mov [edi],edx ; cluster size in bytes |
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198 | ret ;end of code - Mihasik |
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199 | |||
200 | fs_noroot: |
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201 | |||
61 | halyavin | 202 | push dword [eax+0] ; read/write/delete/.../makedir/rename/lba/run |
203 | push dword [eax+4] ; 512 block number to read |
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204 | push dword [eax+8] ; bytes to write/append or 512 blocks to read |
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1 | ha | 205 | mov ebx,[eax+12] |
465 | serge | 206 | ; add ebx,std_application_base_address |
1 | ha | 207 | push ebx ; abs start of return/save area |
208 | |||
209 | lea esi,[eax+20] ; abs start of dir + filename |
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61 | halyavin | 210 | mov edi,[eax+16] |
465 | serge | 211 | ; add edi,std_application_base_address ; abs start of work area |
1 | ha | 212 | |
213 | call expand_pathz |
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214 | |||
215 | push edi ; dir start |
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216 | push ebx ; name of file start |
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217 | |||
218 | mov eax,[edi+1] |
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219 | cmp eax,'RD ' |
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220 | je fs_yesramdisk |
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61 | halyavin | 221 | cmp eax,'RAMD' |
1 | ha | 222 | jne fs_noramdisk |
223 | |||
224 | fs_yesramdisk: |
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225 | |||
226 | cmp byte [edi+1+11],0 |
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227 | je fs_give_dir1 |
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228 | |||
229 | mov eax,[edi+1+12] |
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230 | cmp eax,'1 ' |
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231 | je fs_yesramdisk_first |
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61 | halyavin | 232 | cmp eax,'FIRS' |
1 | ha | 233 | jne fs_noramdisk |
234 | |||
235 | fs_yesramdisk_first: |
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236 | |||
237 | cmp dword [esp+20],8 ; LBA read ramdisk |
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238 | jne fs_no_LBA_read_ramdisk |
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239 | |||
240 | mov eax,[esp+16] ; LBA block to read |
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241 | mov ecx,[esp+8] ; abs pointer to return area |
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242 | |||
243 | call LBA_read_ramdisk |
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244 | jmp file_system_return |
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245 | |||
246 | |||
247 | fs_no_LBA_read_ramdisk: |
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248 | |||
249 | cmp dword [esp+20],0 ; READ |
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250 | jne fs_noramdisk_read |
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251 | |||
252 | mov eax,[esp+4] ; fname |
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253 | add eax,2*12+1 |
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254 | mov ebx,[esp+16] ; block start |
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255 | inc ebx |
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256 | mov ecx,[esp+12] ; block count |
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257 | mov edx,[esp+8] ; return |
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258 | mov esi,[esp+0] |
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259 | sub esi,eax |
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260 | add esi,12+1 ; file name length |
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261 | call fileread |
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262 | |||
263 | jmp file_system_return |
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264 | |||
265 | |||
266 | fs_noramdisk_read: |
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267 | fs_noramdisk: |
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379 | serge | 268 | |
1 | ha | 269 | ;******************************************************************** |
270 | mov eax,[edi+1] |
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271 | cmp eax,'FD ' |
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272 | je fs_yesflpdisk |
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61 | halyavin | 273 | cmp eax,'FLOP' |
1 | ha | 274 | jne fs_noflpdisk |
275 | |||
276 | fs_yesflpdisk: |
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277 | call reserve_flp |
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278 | |||
279 | cmp byte [edi+1+11],0 |
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280 | je fs_give_dir1 |
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281 | |||
282 | mov eax,[edi+1+12] |
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379 | serge | 283 | cmp eax,'1 ' |
1 | ha | 284 | je fs_yesflpdisk_first |
61 | halyavin | 285 | cmp eax,'FIRS' |
1 | ha | 286 | je fs_yesflpdisk_first |
287 | cmp eax,'2 ' |
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288 | je fs_yesflpdisk_second |
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61 | halyavin | 289 | cmp eax,'SECO' |
1 | ha | 290 | jne fs_noflpdisk |
291 | jmp fs_yesflpdisk_second |
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292 | |||
293 | fs_yesflpdisk_first: |
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294 | mov [flp_number],1 |
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295 | jmp fs_yesflpdisk_start |
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296 | fs_yesflpdisk_second: |
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297 | mov [flp_number],2 |
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298 | fs_yesflpdisk_start: |
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299 | cmp dword [esp+20],0 ; READ |
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300 | jne fs_noflpdisk_read |
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301 | |||
302 | mov eax,[esp+4] ; fname |
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303 | add eax,2*12+1 |
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304 | mov ebx,[esp+16] ; block start |
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305 | inc ebx |
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306 | mov ecx,[esp+12] ; block count |
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307 | mov edx,[esp+8] ; return |
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308 | mov esi,[esp+0] |
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309 | sub esi,eax |
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310 | add esi,12+1 ; file name length |
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311 | call floppy_fileread |
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312 | |||
313 | jmp file_system_return |
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314 | |||
315 | |||
316 | fs_noflpdisk_read: |
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317 | fs_noflpdisk: |
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318 | ;***************************************************************** |
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379 | serge | 319 | |
1 | ha | 320 | mov eax,[edi+1] |
321 | cmp eax,'HD0 ' |
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322 | je fs_yesharddisk_IDE0 |
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323 | cmp eax,'HD1 ' |
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324 | je fs_yesharddisk_IDE1 |
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325 | cmp eax,'HD2 ' |
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326 | je fs_yesharddisk_IDE2 |
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327 | cmp eax,'HD3 ' |
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328 | je fs_yesharddisk_IDE3 |
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329 | jmp old_path_harddisk |
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330 | fs_yesharddisk_IDE0: |
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331 | call reserve_hd1 |
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332 | mov [hdbase],0x1f0 |
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333 | mov [hdid],0x0 |
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334 | mov [hdpos],1 |
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335 | jmp fs_yesharddisk_partition |
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336 | fs_yesharddisk_IDE1: |
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337 | call reserve_hd1 |
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338 | mov [hdbase],0x1f0 |
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339 | mov [hdid],0x10 |
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340 | mov [hdpos],2 |
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341 | jmp fs_yesharddisk_partition |
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342 | fs_yesharddisk_IDE2: |
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343 | call reserve_hd1 |
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344 | mov [hdbase],0x170 |
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345 | mov [hdid],0x0 |
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346 | mov [hdpos],3 |
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347 | jmp fs_yesharddisk_partition |
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348 | fs_yesharddisk_IDE3: |
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349 | call reserve_hd1 |
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350 | mov [hdbase],0x170 |
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351 | mov [hdid],0x10 |
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352 | mov [hdpos],4 |
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353 | fs_yesharddisk_partition: |
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321 | diamond | 354 | call reserve_hd_channel |
379 | serge | 355 | ; call choice_necessity_partition |
356 | ; jmp fs_yesharddisk_all |
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1 | ha | 357 | jmp fs_for_new_semantic |
358 | |||
359 | choice_necessity_partition: |
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360 | mov eax,[edi+1+12] |
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361 | call StringToNumber |
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362 | mov [fat32part],eax |
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363 | choice_necessity_partition_1: |
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364 | mov ecx,[hdpos] |
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365 | xor eax,eax |
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389 | serge | 366 | mov [hd_entries], eax ; entries in hd cache |
367 | mov edx,DRIVE_DATA+2 |
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1 | ha | 368 | search_partition_array: |
369 | mov bl,[edx] |
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370 | movzx ebx,bl |
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371 | add eax,ebx |
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372 | inc edx |
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373 | loop search_partition_array |
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374 | sub eax,ebx |
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375 | add eax,[fat32part] |
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376 | dec eax |
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377 | xor edx,edx |
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378 | imul eax,100 |
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389 | serge | 379 | add eax,DRIVE_DATA+0xa |
1 | ha | 380 | mov [transfer_adress],eax |
381 | call partition_data_transfer_1 |
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382 | ret |
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383 | |||
384 | old_path_harddisk: |
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385 | mov eax,[edi+1] |
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386 | cmp eax,'HD ' |
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387 | je fs_yesharddisk |
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61 | halyavin | 388 | cmp eax,'HARD' |
1 | ha | 389 | jne fs_noharddisk |
390 | |||
391 | fs_yesharddisk: |
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392 | cmp dword [esp+20],8 ; LBA read |
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393 | jne fs_no_LBA_read |
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394 | mov eax,[esp+16] ; LBA block to read |
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395 | lea ebx,[edi+1+12] ; pointer to FIRST/SECOND/THIRD/FOURTH |
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396 | mov ecx,[esp+8] ; abs pointer to return area |
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397 | call LBA_read |
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398 | jmp file_system_return |
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399 | |||
400 | fs_no_LBA_read: |
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401 | |||
402 | cmp byte [edi+1+11],0 ; directory read |
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403 | je fs_give_dir1 |
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63 | halyavin | 404 | call reserve_hd1 |
1 | ha | 405 | fs_for_new_semantic: |
379 | serge | 406 | call choice_necessity_partition |
1 | ha | 407 | |
408 | fs_yesharddisk_all: |
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409 | mov eax,1 |
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147 | diamond | 410 | mov ebx, [esp+24+24] |
1 | ha | 411 | cmp [hdpos],0 ; is hd base set? |
63 | halyavin | 412 | jz hd_err_return |
1 | ha | 413 | cmp [fat32part],0 ; is partition set? |
63 | halyavin | 414 | jnz @f |
415 | hd_err_return: |
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321 | diamond | 416 | call free_hd_channel |
63 | halyavin | 417 | and [hd1_status], 0 |
418 | jmp file_system_return |
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419 | @@: |
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1 | ha | 420 | |
421 | cmp dword [esp+20],0 ; READ |
||
422 | jne fs_noharddisk_read |
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423 | |||
424 | mov eax,[esp+0] ; /fname |
||
425 | lea edi,[eax+12] |
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426 | mov byte [eax],0 ; path to asciiz |
||
427 | inc eax ; filename start |
||
428 | |||
429 | mov ebx,[esp+12] ; count to read |
||
430 | mov ecx,[esp+8] ; buffer |
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431 | mov edx,[esp+4] |
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432 | add edx,12*2 ; dir start |
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433 | sub edi,edx ; path length |
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434 | mov esi,[esp+16] ; blocks to read |
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435 | |||
436 | call file_read |
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437 | |||
438 | mov edi,[esp+0] |
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439 | mov byte [edi],'/' |
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440 | |||
321 | diamond | 441 | call free_hd_channel |
442 | and [hd1_status], 0 |
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1 | ha | 443 | jmp file_system_return |
444 | |||
445 | fs_noharddisk_read: |
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446 | |||
321 | diamond | 447 | call free_hd_channel |
448 | and [hd1_status], 0 |
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1 | ha | 449 | |
450 | fs_noharddisk: |
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61 | halyavin | 451 | ; \begin{diamond}[18.03.2006] |
64 | mario79 | 452 | mov eax, 5 ; file not found |
61 | halyavin | 453 | ; à ìîæåò áûòü, âîçâðàùàòü äðóãîé êîä îøèáêè? |
147 | diamond | 454 | mov ebx, [esp+24+24] ; do not change ebx in application |
61 | halyavin | 455 | ; \end{diamond}[18.03.2006] |
1 | ha | 456 | |
457 | file_system_return: |
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458 | |||
459 | add esp,24 |
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460 | |||
461 | mov [esp+36],eax |
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462 | mov [esp+24],ebx |
||
463 | ret |
||
464 | |||
465 | |||
466 | fs_give_dir1: |
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467 | |||
61 | halyavin | 468 | ; \begin{diamond}[18.03.2006] |
469 | ; /RD,/FD,/HD - only read is allowed |
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470 | ; other operations return "access denied", eax=10 |
||
471 | ; (execute operation returns eax=-10) |
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64 | mario79 | 472 | cmp dword [esp+20], 0 |
473 | jz .read |
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474 | add esp, 20 |
||
475 | pop ecx |
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147 | diamond | 476 | mov dword [esp+36], 10 |
64 | mario79 | 477 | ret |
61 | halyavin | 478 | .read: |
479 | ; \end{diamond}[18.03.2006] |
||
480 | mov al,0x10 |
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1 | ha | 481 | mov ebx,1 |
482 | mov edi,[esp+8] |
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483 | mov esi,dir1 |
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484 | fs_d1_new: |
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485 | mov ecx,11 |
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61 | halyavin | 486 | ; cld |
1 | ha | 487 | rep movsb |
488 | stosb |
||
489 | add edi,32-11-1 |
||
490 | dec ebx |
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491 | jne fs_d1_new |
||
492 | |||
493 | add esp,24 |
||
494 | |||
61 | halyavin | 495 | and dword [esp+36],0 ; ok read |
1 | ha | 496 | mov dword [esp+24],32*1 ; dir/data size |
497 | ret |
||
498 | |||
499 | |||
500 | |||
501 | LBA_read_ramdisk: |
||
502 | |||
503 | cmp [lba_read_enabled],1 |
||
504 | je lbarrl1 |
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505 | |||
506 | xor ebx,ebx |
||
507 | mov eax,2 |
||
508 | ret |
||
509 | |||
510 | lbarrl1: |
||
511 | |||
512 | cmp eax,18*2*80 |
||
513 | jb lbarrl2 |
||
514 | xor ebx,ebx |
||
515 | mov eax,3 |
||
516 | ret |
||
517 | |||
518 | lbarrl2: |
||
519 | |||
520 | pushad |
||
521 | |||
522 | call restorefatchain |
||
523 | |||
524 | mov edi,ecx |
||
525 | mov esi,eax |
||
526 | |||
527 | shl esi,9 |
||
381 | serge | 528 | add esi,RAMDISK |
1 | ha | 529 | mov ecx,512/4 |
61 | halyavin | 530 | ; cld |
1 | ha | 531 | rep movsd |
532 | |||
533 | popad |
||
534 | |||
535 | xor ebx,ebx |
||
536 | xor eax,eax |
||
537 | ret |
||
538 | |||
539 | LBA_read: |
||
540 | |||
541 | ; IN: |
||
542 | ; |
||
543 | ; eax = LBA block to read |
||
544 | ; ebx = pointer to FIRST/SECOND/THIRD/FOURTH |
||
545 | ; ecx = abs pointer to return area |
||
546 | |||
547 | cmp [lba_read_enabled],1 |
||
548 | je lbarl1 |
||
549 | mov eax,2 |
||
550 | ret |
||
551 | |||
552 | lbarl1: |
||
553 | |||
63 | halyavin | 554 | call reserve_hd1 |
1 | ha | 555 | |
556 | push eax |
||
557 | push ecx |
||
558 | |||
559 | mov edi,hd_address_table |
||
560 | mov esi,dir1 |
||
561 | mov eax,[ebx] |
||
562 | mov edx,'1 ' |
||
563 | mov ecx,4 |
||
564 | blar0: |
||
565 | cmp eax,[esi] |
||
566 | je blar2 |
||
567 | cmp eax,edx |
||
568 | je blar2 |
||
569 | inc edx |
||
570 | add edi,8 |
||
571 | add esi,11 |
||
572 | dec ecx |
||
573 | jnz blar0 |
||
574 | |||
575 | mov eax,1 |
||
576 | mov ebx,1 |
||
577 | jmp LBA_read_ret |
||
578 | |||
579 | blar2: |
||
580 | mov eax,[edi+0] |
||
581 | mov ebx,[edi+4] |
||
582 | |||
64 | mario79 | 583 | mov [hdbase],eax |
584 | mov [hdid],ebx |
||
585 | |||
1 | ha | 586 | call wait_for_hd_idle |
74 | mario79 | 587 | cmp [hd_error],0 |
588 | jne hd_lba_error |
||
1 | ha | 589 | |
590 | ; eax = hd port |
||
591 | ; ebx = set for primary (0x00) or slave (0x10) |
||
592 | |||
593 | cli |
||
594 | |||
595 | mov edx,eax |
||
596 | inc edx |
||
597 | xor eax,eax |
||
598 | out dx,al |
||
599 | inc edx |
||
600 | inc eax |
||
601 | out dx,al |
||
602 | inc edx |
||
603 | mov eax,[esp+4] |
||
604 | out dx,al |
||
605 | shr eax,8 |
||
606 | inc edx |
||
607 | out dx,al |
||
608 | shr eax,8 |
||
609 | inc edx |
||
610 | out dx,al |
||
611 | shr eax,8 |
||
612 | inc edx |
||
613 | and al,1+2+4+8 |
||
614 | add al,bl |
||
615 | add al,128+64+32 |
||
616 | out dx,al |
||
617 | |||
618 | inc edx |
||
619 | mov al,20h |
||
620 | out dx,al |
||
621 | |||
622 | sti |
||
623 | |||
624 | call wait_for_sector_buffer |
||
74 | mario79 | 625 | cmp [hd_error],0 |
626 | jne hd_lba_error |
||
1 | ha | 627 | |
628 | cli |
||
629 | |||
630 | mov edi,[esp+0] |
||
631 | mov ecx,256 |
||
632 | sub edx,7 |
||
633 | cld |
||
634 | rep insw |
||
635 | |||
636 | sti |
||
637 | |||
638 | xor eax,eax |
||
639 | xor ebx,ebx |
||
640 | |||
641 | LBA_read_ret: |
||
74 | mario79 | 642 | mov [hd_error],0 |
1 | ha | 643 | mov [hd1_status],0 |
644 | add esp,2*4 |
||
645 | |||
646 | ret |
||
647 | |||
648 | |||
649 | expand_pathz: |
||
650 | ; IN: |
||
651 | ; esi = asciiz path & file |
||
652 | ; edi = buffer for path & file name |
||
653 | ; OUT: |
||
654 | ; edi = directory & file : / 11 + / 11 + / 11 - zero terminated |
||
655 | ; ebx = /file name - zero terminated |
||
656 | ; esi = pointer after source |
||
657 | |||
658 | push eax |
||
659 | push ecx |
||
660 | push edi ;[esp+0] |
||
661 | |||
662 | pathz_start: |
||
663 | mov byte [edi],'/' |
||
664 | inc edi |
||
665 | mov al,32 |
||
666 | mov ecx,11 |
||
667 | cld |
||
668 | rep stosb ; clear filename area |
||
669 | sub edi,11 |
||
670 | mov ebx,edi ; start of dir/file name |
||
671 | |||
672 | pathz_new_char: |
||
673 | mov al,[esi] |
||
674 | inc esi |
||
675 | cmp al,0 |
||
676 | je pathz_end |
||
677 | |||
678 | cmp al,'/' |
||
679 | jne pathz_not_path |
||
680 | cmp edi,ebx ; skip first '/' |
||
681 | jz pathz_new_char |
||
682 | lea edi,[ebx+11] ; start of next directory |
||
683 | jmp pathz_start |
||
684 | |||
685 | pathz_not_path: |
||
686 | cmp al,'.' |
||
687 | jne pathz_not_ext |
||
688 | lea edi,[ebx+8] ; start of extension |
||
689 | jmp pathz_new_char |
||
690 | |||
691 | pathz_not_ext: |
||
692 | cmp al,'a' |
||
693 | jb pathz_not_low |
||
694 | cmp al,'z' |
||
695 | ja pathz_not_low |
||
696 | sub al,0x20 ; char to uppercase |
||
697 | |||
698 | pathz_not_low: |
||
699 | mov [edi],al |
||
700 | inc edi |
||
701 | mov eax,[esp+0] ; start_of_dest_path |
||
702 | add eax,512 ; keep maximum path under 512 bytes |
||
703 | cmp edi,eax |
||
704 | jb pathz_new_char |
||
705 | |||
706 | pathz_end: |
||
707 | cmp ebx,edi ; if path end with '/' |
||
708 | jnz pathz_put_zero ; go back 1 level |
||
709 | sub ebx,12 |
||
710 | |||
711 | pathz_put_zero: |
||
712 | mov byte [ebx+11],0 |
||
713 | dec ebx ; include '/' char into file name |
||
714 | pop edi |
||
715 | pop ecx |
||
716 | pop eax |
||
717 | ret |
||
718 | |||
719 | ;******************************************* |
||
720 | ;* string to number |
||
721 | ;* input eax - 4 byte string |
||
722 | ;* output eax - number |
||
723 | ;******************************************* |
||
724 | StringToNumber: |
||
725 | ; ÏÅÐÅÂÎÄ ÑÒÐÎÊÎÂÎÃÎ ×ÈÑËÀ  ×ÈÑËÎÂÎÉ ÂÈÄ |
||
726 | ; Âõîä: |
||
727 | ; EDI - àäðåñ ñòðîêè ñ ÷èñëîì. Êîíåö ÷èñëà îòìå÷åí êîäîì 0Dh |
||
728 | ; Âûõîä: |
||
729 | ; CF - èíäèêàòîð îøèáîê: |
||
730 | ; 0 - îøèáîê íåò; |
||
731 | ; 1 - îøèáêà |
||
732 | ; Åñëè CF=0, òî AX - ÷èñëî. |
||
733 | |||
734 | push bx |
||
735 | push cx |
||
736 | push dx |
||
737 | push edi |
||
738 | mov [partition_string],eax |
||
739 | mov edi,partition_string |
||
740 | xor cx,cx |
||
379 | serge | 741 | i1: |
1 | ha | 742 | mov al,[edi] |
743 | cmp al,32 ;13 |
||
744 | je i_exit |
||
745 | ; cmp al,'0' |
||
746 | ; jb err |
||
747 | ; cmp al,'9' |
||
748 | ; ja err |
||
749 | sub al,48 |
||
750 | shl cx,1 |
||
751 | jc err |
||
752 | mov bx,cx |
||
753 | shl cx,1 |
||
754 | jc err |
||
755 | shl cx,1 |
||
756 | jc err |
||
757 | add cx,bx |
||
758 | jc err |
||
759 | cbw |
||
760 | add cx,ax |
||
761 | jc err |
||
762 | i3: |
||
763 | inc edi |
||
764 | jmp i1 |
||
765 | i_exit: |
||
766 | mov ax,cx |
||
767 | clc |
||
768 | i4: |
||
769 | movzx eax,ax |
||
770 | pop edi |
||
771 | pop dx |
||
772 | pop cx |
||
773 | pop bx |
||
774 | ret |
||
775 | |||
776 | err: |
||
777 | stc |
||
778 | jmp i4 |
||
779 | |||
780 | partition_string: dd 0 |
||
781 | db 32>=>>=> |