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Rev | Author | Line No. | Line |
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444 | serge | 1 | $Revision: 431 $ |
440 | serge | 2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ha | 3 | ;; ;; |
440 | serge | 4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
5 | ;; Distributed under terms of the GNU General Public License ;; |
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6 | ;; ;; |
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7 | ;; ;; |
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1 | ha | 8 | ;; System service for filesystem call ;; |
9 | ;; (C) 2004 Ville Turjanmaa, License: GPL ;; |
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74 | mario79 | 10 | ;; 29.04.2006 Elimination of hangup after the ;; |
11 | ;; expiration hd_wait_timeout (for LBA) - Mario79 ;; |
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440 | serge | 12 | ;; 15.01.2005 get file size/attr/date, ;; |
13 | ;; file_append (only for hd) - ATV ;; |
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1 | ha | 14 | ;; 23.11.2004 test if hd/partition is set - ATV ;; |
15 | ;; 18.11.2004 get_disk_info and more error codes - ATV ;; |
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16 | ;; 08.11.2004 expand_pathz and rename (only for hd) - ATV ;; |
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17 | ;; 20.10.2004 Makedir/Removedir (only for hd) - ATV ;; |
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18 | ;; ;; |
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440 | serge | 19 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ha | 20 | |
21 | iglobal |
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22 | dir0: db 'HARDDISK ' |
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23 | db 'RAMDISK ' |
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24 | db 'FLOPPYDISK ' |
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25 | db 0 |
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26 | |||
27 | dir1: db 'FIRST ' |
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28 | db 'SECOND ' |
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29 | db 'THIRD ' |
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30 | db 'FOURTH ' |
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31 | db 0 |
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32 | |||
33 | not_select_IDE db 0 |
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34 | |||
35 | hd_address_table: dd 0x1f0,0x00,0x1f0,0x10 |
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36 | dd 0x170,0x00,0x170,0x10 |
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37 | endg |
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38 | |||
74 | mario79 | 39 | file_system: |
40 | |||
1 | ha | 41 | ; IN: |
42 | ; |
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133 | diamond | 43 | ; eax = 0 ; read file /RamDisk/First 6 |
1 | ha | 44 | ; eax = 1 ; write file /RamDisk/First 33 /HardDisk/First 56 |
45 | ; eax = 8 ; lba read |
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46 | ; eax = 15 ; get_disk_info |
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47 | ; |
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48 | ; OUT: |
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49 | ; |
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50 | ; eax = 0 : read ok |
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61 | halyavin | 51 | ; eax = 1 : no hd base and/or partition defined |
71 | diamond | 52 | ; eax = 2 : function is unsupported for this FS |
1 | ha | 53 | ; eax = 3 : unknown FS |
54 | ; eax = 4 : partition not defined at hd |
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55 | ; eax = 5 : file not found |
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56 | ; eax = 6 : end of file |
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57 | ; eax = 7 : memory pointer not in application area |
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58 | ; eax = 8 : disk full |
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59 | ; eax = 9 : fat table corrupted |
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60 | ; eax = 10 : access denied |
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83 | diamond | 61 | ; eax = 11 : disk error |
1 | ha | 62 | ; |
63 | ; ebx = size |
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64 | |||
61 | halyavin | 65 | ; \begin{diamond}[18.03.2006] |
66 | ; for subfunction 16 (start application) error codes must be negative |
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64 | mario79 | 67 | ; because positive values are valid PIDs |
61 | halyavin | 68 | ; so possible return values are: |
69 | ; eax > 0 : process created, eax=PID |
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70 | |||
71 | ; -0x10 <= eax < 0 : -eax is filesystem error code: |
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72 | ; eax = -1 = 0xFFFFFFFF : no hd base and/or partition defined |
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73 | ; eax = -3 = 0xFFFFFFFD : unknown FS |
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74 | ; eax = -5 = 0xFFFFFFFB : file not found |
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75 | ; eax = -6 = 0xFFFFFFFA : unexpected end of file (probably not executable file) |
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76 | ; eax = -9 = 0xFFFFFFF7 : fat table corrupted |
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77 | ; eax = -10 = 0xFFFFFFF6 : access denied |
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78 | |||
79 | ; -0x20 <= eax < -0x10: eax is process creation error code: |
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80 | ; eax = -0x20 = 0xFFFFFFE0 : too many processes |
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81 | ; eax = -0x1F = 0xFFFFFFE1 : not Menuet/Kolibri executable |
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82 | ; eax = -0x1E = 0xFFFFFFE2 : no memory |
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83 | |||
84 | ; ebx is not changed |
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85 | |||
86 | ; \end{diamond}[18.03.2006] |
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87 | |||
1 | ha | 88 | ; Extract parameters |
419 | serge | 89 | ; add eax, std_application_base_address ; abs start of info block |
1 | ha | 90 | |
91 | cmp dword [eax+0],15 ; GET_DISK_INFO |
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92 | je fs_info |
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93 | |||
379 | serge | 94 | cmp dword [CURRENT_TASK],1 ; no memory checks for kernel requests |
1 | ha | 95 | jz no_checks_for_kernel |
96 | mov edx,eax |
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97 | cmp dword [eax+0],1 |
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98 | jnz .usual_check |
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99 | mov ebx,[eax+12] |
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419 | serge | 100 | ; add ebx,std_application_base_address |
1 | ha | 101 | mov ecx,[eax+8] |
102 | call check_region |
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103 | test eax,eax |
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104 | jnz area_in_app_mem |
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379 | serge | 105 | |
1 | ha | 106 | .error_output: |
107 | mov esi,buffer_failed |
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108 | call sys_msg_board_str |
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61 | halyavin | 109 | ; mov eax,7 |
1 | ha | 110 | mov dword [esp+36],7 |
111 | ret |
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112 | iglobal |
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61 | halyavin | 113 | buffer_failed db 'K : Buffer check failed',13,10,0 |
379 | serge | 114 | endg |
1 | ha | 115 | .usual_check: |
116 | cmp dword [eax+0],0 |
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117 | mov ecx,512 |
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118 | jnz .small_size |
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119 | mov ecx,[eax+8] |
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120 | shl ecx,9 |
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121 | .small_size: |
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122 | mov ebx,[eax+12] |
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419 | serge | 123 | ; add ebx,std_application_base_address |
1 | ha | 124 | call check_region |
125 | test eax,eax |
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126 | jz .error_output |
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127 | area_in_app_mem: |
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128 | mov eax,edx |
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129 | no_checks_for_kernel: |
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130 | |||
131 | fs_read: |
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132 | |||
133 | mov ebx,[eax+20] ; program wants root directory ? |
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134 | test bl,bl |
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135 | je fs_getroot |
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136 | test bh,bh |
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137 | jne fs_noroot |
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138 | fs_getroot: |
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61 | halyavin | 139 | ; \begin{diamond}[18.03.2006] |
140 | ; root - only read is allowed |
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141 | ; other operations return "access denied", eax=10 |
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142 | ; (execute operation returns eax=-10) |
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64 | mario79 | 143 | cmp dword [eax], 0 |
144 | jz .read_root |
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147 | diamond | 145 | mov dword [esp+36], 10 |
64 | mario79 | 146 | ret |
61 | halyavin | 147 | .read_root: |
148 | ; \end{diamond}[18.03.2006] |
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1 | ha | 149 | mov esi,dir0 |
150 | mov edi,[eax+12] |
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419 | serge | 151 | ; add edi,std_application_base_address |
1 | ha | 152 | mov ecx,11 |
61 | halyavin | 153 | push ecx |
64 | mario79 | 154 | ; cld ; already is |
1 | ha | 155 | rep movsb |
61 | halyavin | 156 | mov al,0x10 |
1 | ha | 157 | stosb |
158 | add edi,32-11-1 |
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61 | halyavin | 159 | pop ecx |
1 | ha | 160 | rep movsb |
161 | stosb |
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61 | halyavin | 162 | and dword [esp+36],0 ; ok read |
1 | ha | 163 | mov dword [esp+24],32*2 ; size of root |
164 | ret |
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165 | |||
166 | fs_info: ;start of code - Mihasik |
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61 | halyavin | 167 | push eax |
1 | ha | 168 | cmp [eax+21],byte 'h' |
169 | je fs_info_h |
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170 | cmp [eax+21],byte 'H' |
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171 | je fs_info_h |
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172 | cmp [eax+21],byte 'r' |
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173 | je fs_info_r |
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174 | cmp [eax+21],byte 'R' |
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175 | je fs_info_r |
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176 | mov eax,3 ;if unknown disk |
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177 | xor ebx,ebx |
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178 | xor ecx,ecx |
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179 | xor edx,edx |
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180 | jmp fs_info1 |
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181 | fs_info_r: |
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182 | call ramdisk_free_space ;if ramdisk |
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183 | mov ecx,edi ;free space in ecx |
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184 | shr ecx,9 ;free clusters |
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185 | mov ebx,2847 ;total clusters |
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186 | mov edx,512 ;cluster size |
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187 | xor eax,eax ;always 0 |
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188 | jmp fs_info1 |
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189 | fs_info_h: ;if harddisk |
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190 | call get_hd_info |
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191 | fs_info1: |
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192 | pop edi |
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193 | mov [esp+36],eax |
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194 | mov [esp+24],ebx ; total clusters on disk |
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195 | mov [esp+32],ecx ; free clusters on disk |
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196 | mov [edi],edx ; cluster size in bytes |
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197 | ret ;end of code - Mihasik |
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198 | |||
199 | fs_noroot: |
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200 | |||
61 | halyavin | 201 | push dword [eax+0] ; read/write/delete/.../makedir/rename/lba/run |
202 | push dword [eax+4] ; 512 block number to read |
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203 | push dword [eax+8] ; bytes to write/append or 512 blocks to read |
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1 | ha | 204 | mov ebx,[eax+12] |
419 | serge | 205 | ; add ebx,std_application_base_address |
1 | ha | 206 | push ebx ; abs start of return/save area |
207 | |||
208 | lea esi,[eax+20] ; abs start of dir + filename |
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61 | halyavin | 209 | mov edi,[eax+16] |
419 | serge | 210 | ; add edi,std_application_base_address ; abs start of work area |
1 | ha | 211 | |
212 | call expand_pathz |
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213 | |||
214 | push edi ; dir start |
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215 | push ebx ; name of file start |
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216 | |||
217 | mov eax,[edi+1] |
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218 | cmp eax,'RD ' |
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219 | je fs_yesramdisk |
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61 | halyavin | 220 | cmp eax,'RAMD' |
1 | ha | 221 | jne fs_noramdisk |
222 | |||
223 | fs_yesramdisk: |
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224 | |||
225 | cmp byte [edi+1+11],0 |
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226 | je fs_give_dir1 |
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227 | |||
228 | mov eax,[edi+1+12] |
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229 | cmp eax,'1 ' |
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230 | je fs_yesramdisk_first |
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61 | halyavin | 231 | cmp eax,'FIRS' |
1 | ha | 232 | jne fs_noramdisk |
233 | |||
234 | fs_yesramdisk_first: |
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235 | |||
236 | cmp dword [esp+20],8 ; LBA read ramdisk |
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237 | jne fs_no_LBA_read_ramdisk |
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238 | |||
239 | mov eax,[esp+16] ; LBA block to read |
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240 | mov ecx,[esp+8] ; abs pointer to return area |
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241 | |||
242 | call LBA_read_ramdisk |
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243 | jmp file_system_return |
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244 | |||
245 | |||
246 | fs_no_LBA_read_ramdisk: |
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247 | |||
248 | cmp dword [esp+20],0 ; READ |
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249 | jne fs_noramdisk_read |
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250 | |||
251 | mov eax,[esp+4] ; fname |
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252 | add eax,2*12+1 |
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253 | mov ebx,[esp+16] ; block start |
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254 | inc ebx |
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255 | mov ecx,[esp+12] ; block count |
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256 | mov edx,[esp+8] ; return |
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257 | mov esi,[esp+0] |
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258 | sub esi,eax |
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259 | add esi,12+1 ; file name length |
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260 | call fileread |
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261 | |||
262 | jmp file_system_return |
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263 | |||
264 | |||
265 | fs_noramdisk_read: |
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266 | |||
267 | cmp dword [esp+20],1 ; WRITE |
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268 | jne fs_noramdisk_write |
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269 | |||
270 | mov eax,[esp+4] ; fname |
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271 | add eax,2*12+1 |
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272 | mov ebx,[esp+8] ; buffer |
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273 | mov ecx,[esp+12] ; count to write |
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274 | mov edx,0 ; create new |
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275 | call filesave |
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276 | |||
277 | ; eax=0 ok - eax=1 not enough free space |
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278 | |||
279 | jmp file_system_return |
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280 | |||
281 | fs_noramdisk_write: |
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282 | fs_noramdisk: |
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379 | serge | 283 | |
1 | ha | 284 | ;******************************************************************** |
285 | mov eax,[edi+1] |
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286 | cmp eax,'FD ' |
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287 | je fs_yesflpdisk |
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61 | halyavin | 288 | cmp eax,'FLOP' |
1 | ha | 289 | jne fs_noflpdisk |
290 | |||
291 | fs_yesflpdisk: |
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292 | call reserve_flp |
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293 | |||
294 | cmp byte [edi+1+11],0 |
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295 | je fs_give_dir1 |
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296 | |||
297 | mov eax,[edi+1+12] |
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379 | serge | 298 | cmp eax,'1 ' |
1 | ha | 299 | je fs_yesflpdisk_first |
61 | halyavin | 300 | cmp eax,'FIRS' |
1 | ha | 301 | je fs_yesflpdisk_first |
302 | cmp eax,'2 ' |
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303 | je fs_yesflpdisk_second |
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61 | halyavin | 304 | cmp eax,'SECO' |
1 | ha | 305 | jne fs_noflpdisk |
306 | jmp fs_yesflpdisk_second |
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307 | |||
308 | fs_yesflpdisk_first: |
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309 | mov [flp_number],1 |
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310 | jmp fs_yesflpdisk_start |
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311 | fs_yesflpdisk_second: |
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312 | mov [flp_number],2 |
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313 | fs_yesflpdisk_start: |
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314 | cmp dword [esp+20],0 ; READ |
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315 | jne fs_noflpdisk_read |
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316 | |||
317 | mov eax,[esp+4] ; fname |
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318 | add eax,2*12+1 |
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319 | mov ebx,[esp+16] ; block start |
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320 | inc ebx |
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321 | mov ecx,[esp+12] ; block count |
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322 | mov edx,[esp+8] ; return |
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323 | mov esi,[esp+0] |
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324 | sub esi,eax |
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325 | add esi,12+1 ; file name length |
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326 | call floppy_fileread |
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327 | |||
328 | jmp file_system_return |
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329 | |||
330 | |||
331 | fs_noflpdisk_read: |
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332 | |||
333 | cmp dword [esp+20],1 ; WRITE |
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334 | jne fs_noflpdisk_write |
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335 | |||
336 | mov eax,[esp+4] ; fname |
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337 | add eax,2*12+1 |
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338 | mov ebx,[esp+8] ; buffer |
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339 | mov ecx,[esp+12] ; count to write |
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340 | mov edx,0 ; create new |
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341 | call floppy_filesave |
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342 | |||
343 | ; eax=0 ok - eax=1 not enough free space |
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344 | |||
345 | jmp file_system_return |
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346 | |||
347 | fs_noflpdisk_write: |
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348 | |||
349 | fs_noflpdisk: |
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350 | ;***************************************************************** |
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379 | serge | 351 | |
1 | ha | 352 | mov eax,[edi+1] |
353 | cmp eax,'HD0 ' |
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354 | je fs_yesharddisk_IDE0 |
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355 | cmp eax,'HD1 ' |
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356 | je fs_yesharddisk_IDE1 |
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357 | cmp eax,'HD2 ' |
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358 | je fs_yesharddisk_IDE2 |
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359 | cmp eax,'HD3 ' |
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360 | je fs_yesharddisk_IDE3 |
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361 | jmp old_path_harddisk |
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362 | fs_yesharddisk_IDE0: |
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363 | call reserve_hd1 |
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364 | mov [hdbase],0x1f0 |
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365 | mov [hdid],0x0 |
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366 | mov [hdpos],1 |
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367 | jmp fs_yesharddisk_partition |
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368 | fs_yesharddisk_IDE1: |
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369 | call reserve_hd1 |
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370 | mov [hdbase],0x1f0 |
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371 | mov [hdid],0x10 |
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372 | mov [hdpos],2 |
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373 | jmp fs_yesharddisk_partition |
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374 | fs_yesharddisk_IDE2: |
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375 | call reserve_hd1 |
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376 | mov [hdbase],0x170 |
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377 | mov [hdid],0x0 |
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378 | mov [hdpos],3 |
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379 | jmp fs_yesharddisk_partition |
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380 | fs_yesharddisk_IDE3: |
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381 | call reserve_hd1 |
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382 | mov [hdbase],0x170 |
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383 | mov [hdid],0x10 |
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384 | mov [hdpos],4 |
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385 | fs_yesharddisk_partition: |
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321 | diamond | 386 | call reserve_hd_channel |
379 | serge | 387 | ; call choice_necessity_partition |
388 | ; jmp fs_yesharddisk_all |
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1 | ha | 389 | jmp fs_for_new_semantic |
390 | |||
391 | choice_necessity_partition: |
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392 | mov eax,[edi+1+12] |
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393 | call StringToNumber |
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394 | mov [fat32part],eax |
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395 | choice_necessity_partition_1: |
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396 | mov ecx,[hdpos] |
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397 | xor eax,eax |
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388 | serge | 398 | mov [hd_entries], eax ; entries in hd cache |
399 | mov edx,DRIVE_DATA+2 |
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1 | ha | 400 | search_partition_array: |
401 | mov bl,[edx] |
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402 | movzx ebx,bl |
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403 | add eax,ebx |
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404 | inc edx |
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405 | loop search_partition_array |
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406 | sub eax,ebx |
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407 | add eax,[fat32part] |
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408 | dec eax |
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409 | xor edx,edx |
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410 | imul eax,100 |
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388 | serge | 411 | add eax,DRIVE_DATA+0xa |
1 | ha | 412 | mov [transfer_adress],eax |
413 | call partition_data_transfer_1 |
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414 | ret |
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415 | |||
416 | old_path_harddisk: |
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417 | mov eax,[edi+1] |
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418 | cmp eax,'HD ' |
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419 | je fs_yesharddisk |
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61 | halyavin | 420 | cmp eax,'HARD' |
1 | ha | 421 | jne fs_noharddisk |
422 | |||
423 | fs_yesharddisk: |
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424 | cmp dword [esp+20],8 ; LBA read |
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425 | jne fs_no_LBA_read |
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426 | mov eax,[esp+16] ; LBA block to read |
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427 | lea ebx,[edi+1+12] ; pointer to FIRST/SECOND/THIRD/FOURTH |
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428 | mov ecx,[esp+8] ; abs pointer to return area |
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429 | call LBA_read |
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430 | jmp file_system_return |
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431 | |||
432 | fs_no_LBA_read: |
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433 | |||
434 | cmp byte [edi+1+11],0 ; directory read |
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435 | je fs_give_dir1 |
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63 | halyavin | 436 | call reserve_hd1 |
1 | ha | 437 | fs_for_new_semantic: |
379 | serge | 438 | call choice_necessity_partition |
1 | ha | 439 | |
440 | fs_yesharddisk_all: |
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441 | mov eax,1 |
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147 | diamond | 442 | mov ebx, [esp+24+24] |
1 | ha | 443 | cmp [hdpos],0 ; is hd base set? |
63 | halyavin | 444 | jz hd_err_return |
1 | ha | 445 | cmp [fat32part],0 ; is partition set? |
63 | halyavin | 446 | jnz @f |
447 | hd_err_return: |
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321 | diamond | 448 | call free_hd_channel |
63 | halyavin | 449 | and [hd1_status], 0 |
450 | jmp file_system_return |
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451 | @@: |
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1 | ha | 452 | |
453 | cmp dword [esp+20],0 ; READ |
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454 | jne fs_noharddisk_read |
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455 | |||
456 | mov eax,[esp+0] ; /fname |
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457 | lea edi,[eax+12] |
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458 | mov byte [eax],0 ; path to asciiz |
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459 | inc eax ; filename start |
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460 | |||
461 | mov ebx,[esp+12] ; count to read |
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462 | mov ecx,[esp+8] ; buffer |
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463 | mov edx,[esp+4] |
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464 | add edx,12*2 ; dir start |
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465 | sub edi,edx ; path length |
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466 | mov esi,[esp+16] ; blocks to read |
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467 | |||
468 | call file_read |
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469 | |||
470 | mov edi,[esp+0] |
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471 | mov byte [edi],'/' |
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472 | |||
321 | diamond | 473 | call free_hd_channel |
474 | and [hd1_status], 0 |
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1 | ha | 475 | jmp file_system_return |
476 | |||
477 | fs_noharddisk_read: |
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478 | |||
479 | |||
480 | cmp dword [esp+20],1 ; WRITE |
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481 | jne fs_noharddisk_write |
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482 | |||
483 | mov eax,[esp+0] ; /fname |
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484 | mov byte [eax],0 ; path to asciiz |
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485 | inc eax ; filename start |
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486 | |||
487 | mov ebx,[esp+12] ; count to write |
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488 | mov ecx,[esp+8] ; buffer |
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489 | mov edx,[esp+4] |
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490 | add edx,12*2 ; path start |
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491 | |||
492 | call file_write |
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493 | |||
494 | mov edi,[esp+0] |
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495 | mov byte [edi],'/' |
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496 | |||
497 | ; eax=0 ok - eax=1 not enough free space |
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498 | |||
321 | diamond | 499 | call free_hd_channel |
500 | and [hd1_status], 0 |
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1 | ha | 501 | jmp file_system_return |
502 | |||
503 | |||
504 | fs_noharddisk_write: |
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505 | |||
506 | |||
321 | diamond | 507 | call free_hd_channel |
508 | and [hd1_status], 0 |
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1 | ha | 509 | |
510 | fs_noharddisk: |
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61 | halyavin | 511 | ; \begin{diamond}[18.03.2006] |
64 | mario79 | 512 | mov eax, 5 ; file not found |
61 | halyavin | 513 | ; à ìîæåò áûòü, âîçâðàùàòü äðóãîé êîä îøèáêè? |
147 | diamond | 514 | mov ebx, [esp+24+24] ; do not change ebx in application |
61 | halyavin | 515 | ; \end{diamond}[18.03.2006] |
1 | ha | 516 | |
517 | file_system_return: |
||
518 | |||
519 | add esp,24 |
||
520 | |||
521 | mov [esp+36],eax |
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522 | mov [esp+24],ebx |
||
523 | ret |
||
524 | |||
525 | |||
526 | fs_give_dir1: |
||
527 | |||
61 | halyavin | 528 | ; \begin{diamond}[18.03.2006] |
529 | ; /RD,/FD,/HD - only read is allowed |
||
530 | ; other operations return "access denied", eax=10 |
||
531 | ; (execute operation returns eax=-10) |
||
64 | mario79 | 532 | cmp dword [esp+20], 0 |
533 | jz .read |
||
534 | add esp, 20 |
||
535 | pop ecx |
||
147 | diamond | 536 | mov dword [esp+36], 10 |
64 | mario79 | 537 | ret |
61 | halyavin | 538 | .read: |
539 | ; \end{diamond}[18.03.2006] |
||
540 | mov al,0x10 |
||
1 | ha | 541 | mov ebx,1 |
542 | mov edi,[esp+8] |
||
543 | mov esi,dir1 |
||
544 | fs_d1_new: |
||
545 | mov ecx,11 |
||
61 | halyavin | 546 | ; cld |
1 | ha | 547 | rep movsb |
548 | stosb |
||
549 | add edi,32-11-1 |
||
550 | dec ebx |
||
551 | jne fs_d1_new |
||
552 | |||
553 | add esp,24 |
||
554 | |||
61 | halyavin | 555 | and dword [esp+36],0 ; ok read |
1 | ha | 556 | mov dword [esp+24],32*1 ; dir/data size |
557 | ret |
||
558 | |||
559 | |||
560 | |||
561 | LBA_read_ramdisk: |
||
562 | |||
563 | cmp [lba_read_enabled],1 |
||
564 | je lbarrl1 |
||
565 | |||
566 | xor ebx,ebx |
||
567 | mov eax,2 |
||
568 | ret |
||
569 | |||
570 | lbarrl1: |
||
571 | |||
572 | cmp eax,18*2*80 |
||
573 | jb lbarrl2 |
||
574 | xor ebx,ebx |
||
575 | mov eax,3 |
||
576 | ret |
||
577 | |||
578 | lbarrl2: |
||
579 | |||
580 | pushad |
||
581 | |||
582 | call restorefatchain |
||
583 | |||
584 | mov edi,ecx |
||
585 | mov esi,eax |
||
586 | |||
587 | shl esi,9 |
||
381 | serge | 588 | add esi,RAMDISK |
1 | ha | 589 | mov ecx,512/4 |
61 | halyavin | 590 | ; cld |
1 | ha | 591 | rep movsd |
592 | |||
593 | popad |
||
594 | |||
595 | xor ebx,ebx |
||
596 | xor eax,eax |
||
597 | ret |
||
598 | |||
599 | LBA_read: |
||
600 | |||
601 | ; IN: |
||
602 | ; |
||
603 | ; eax = LBA block to read |
||
604 | ; ebx = pointer to FIRST/SECOND/THIRD/FOURTH |
||
605 | ; ecx = abs pointer to return area |
||
606 | |||
607 | cmp [lba_read_enabled],1 |
||
608 | je lbarl1 |
||
609 | mov eax,2 |
||
610 | ret |
||
611 | |||
612 | lbarl1: |
||
613 | |||
63 | halyavin | 614 | call reserve_hd1 |
1 | ha | 615 | |
616 | push eax |
||
617 | push ecx |
||
618 | |||
619 | mov edi,hd_address_table |
||
620 | mov esi,dir1 |
||
621 | mov eax,[ebx] |
||
622 | mov edx,'1 ' |
||
623 | mov ecx,4 |
||
624 | blar0: |
||
625 | cmp eax,[esi] |
||
626 | je blar2 |
||
627 | cmp eax,edx |
||
628 | je blar2 |
||
629 | inc edx |
||
630 | add edi,8 |
||
631 | add esi,11 |
||
632 | dec ecx |
||
633 | jnz blar0 |
||
634 | |||
635 | mov eax,1 |
||
636 | mov ebx,1 |
||
637 | jmp LBA_read_ret |
||
638 | |||
639 | blar2: |
||
640 | mov eax,[edi+0] |
||
641 | mov ebx,[edi+4] |
||
642 | |||
64 | mario79 | 643 | mov [hdbase],eax |
644 | mov [hdid],ebx |
||
645 | |||
1 | ha | 646 | call wait_for_hd_idle |
74 | mario79 | 647 | cmp [hd_error],0 |
648 | jne hd_lba_error |
||
1 | ha | 649 | |
650 | ; eax = hd port |
||
651 | ; ebx = set for primary (0x00) or slave (0x10) |
||
652 | |||
653 | cli |
||
654 | |||
655 | mov edx,eax |
||
656 | inc edx |
||
657 | xor eax,eax |
||
658 | out dx,al |
||
659 | inc edx |
||
660 | inc eax |
||
661 | out dx,al |
||
662 | inc edx |
||
663 | mov eax,[esp+4] |
||
664 | out dx,al |
||
665 | shr eax,8 |
||
666 | inc edx |
||
667 | out dx,al |
||
668 | shr eax,8 |
||
669 | inc edx |
||
670 | out dx,al |
||
671 | shr eax,8 |
||
672 | inc edx |
||
673 | and al,1+2+4+8 |
||
674 | add al,bl |
||
675 | add al,128+64+32 |
||
676 | out dx,al |
||
677 | |||
678 | inc edx |
||
679 | mov al,20h |
||
680 | out dx,al |
||
681 | |||
682 | sti |
||
683 | |||
684 | call wait_for_sector_buffer |
||
74 | mario79 | 685 | cmp [hd_error],0 |
686 | jne hd_lba_error |
||
1 | ha | 687 | |
688 | cli |
||
689 | |||
690 | mov edi,[esp+0] |
||
691 | mov ecx,256 |
||
692 | sub edx,7 |
||
693 | cld |
||
694 | rep insw |
||
695 | |||
696 | sti |
||
697 | |||
698 | xor eax,eax |
||
699 | xor ebx,ebx |
||
700 | |||
701 | LBA_read_ret: |
||
74 | mario79 | 702 | mov [hd_error],0 |
1 | ha | 703 | mov [hd1_status],0 |
704 | add esp,2*4 |
||
705 | |||
706 | ret |
||
707 | |||
708 | |||
709 | expand_pathz: |
||
710 | ; IN: |
||
711 | ; esi = asciiz path & file |
||
712 | ; edi = buffer for path & file name |
||
713 | ; OUT: |
||
714 | ; edi = directory & file : / 11 + / 11 + / 11 - zero terminated |
||
715 | ; ebx = /file name - zero terminated |
||
716 | ; esi = pointer after source |
||
717 | |||
718 | push eax |
||
719 | push ecx |
||
720 | push edi ;[esp+0] |
||
721 | |||
722 | pathz_start: |
||
723 | mov byte [edi],'/' |
||
724 | inc edi |
||
725 | mov al,32 |
||
726 | mov ecx,11 |
||
727 | cld |
||
728 | rep stosb ; clear filename area |
||
729 | sub edi,11 |
||
730 | mov ebx,edi ; start of dir/file name |
||
731 | |||
732 | pathz_new_char: |
||
733 | mov al,[esi] |
||
734 | inc esi |
||
735 | cmp al,0 |
||
736 | je pathz_end |
||
737 | |||
738 | cmp al,'/' |
||
739 | jne pathz_not_path |
||
740 | cmp edi,ebx ; skip first '/' |
||
741 | jz pathz_new_char |
||
742 | lea edi,[ebx+11] ; start of next directory |
||
743 | jmp pathz_start |
||
744 | |||
745 | pathz_not_path: |
||
746 | cmp al,'.' |
||
747 | jne pathz_not_ext |
||
748 | lea edi,[ebx+8] ; start of extension |
||
749 | jmp pathz_new_char |
||
750 | |||
751 | pathz_not_ext: |
||
752 | cmp al,'a' |
||
753 | jb pathz_not_low |
||
754 | cmp al,'z' |
||
755 | ja pathz_not_low |
||
756 | sub al,0x20 ; char to uppercase |
||
757 | |||
758 | pathz_not_low: |
||
759 | mov [edi],al |
||
760 | inc edi |
||
761 | mov eax,[esp+0] ; start_of_dest_path |
||
762 | add eax,512 ; keep maximum path under 512 bytes |
||
763 | cmp edi,eax |
||
764 | jb pathz_new_char |
||
765 | |||
766 | pathz_end: |
||
767 | cmp ebx,edi ; if path end with '/' |
||
768 | jnz pathz_put_zero ; go back 1 level |
||
769 | sub ebx,12 |
||
770 | |||
771 | pathz_put_zero: |
||
772 | mov byte [ebx+11],0 |
||
773 | dec ebx ; include '/' char into file name |
||
774 | pop edi |
||
775 | pop ecx |
||
776 | pop eax |
||
777 | ret |
||
778 | |||
779 | ;******************************************* |
||
780 | ;* string to number |
||
781 | ;* input eax - 4 byte string |
||
782 | ;* output eax - number |
||
783 | ;******************************************* |
||
784 | StringToNumber: |
||
785 | ; ÏÅÐÅÂÎÄ ÑÒÐÎÊÎÂÎÃÎ ×ÈÑËÀ  ×ÈÑËÎÂÎÉ ÂÈÄ |
||
786 | ; Âõîä: |
||
787 | ; EDI - àäðåñ ñòðîêè ñ ÷èñëîì. Êîíåö ÷èñëà îòìå÷åí êîäîì 0Dh |
||
788 | ; Âûõîä: |
||
789 | ; CF - èíäèêàòîð îøèáîê: |
||
790 | ; 0 - îøèáîê íåò; |
||
791 | ; 1 - îøèáêà |
||
792 | ; Åñëè CF=0, òî AX - ÷èñëî. |
||
793 | |||
794 | push bx |
||
795 | push cx |
||
796 | push dx |
||
797 | push edi |
||
798 | mov [partition_string],eax |
||
799 | mov edi,partition_string |
||
800 | xor cx,cx |
||
379 | serge | 801 | i1: |
1 | ha | 802 | mov al,[edi] |
803 | cmp al,32 ;13 |
||
804 | je i_exit |
||
805 | ; cmp al,'0' |
||
806 | ; jb err |
||
807 | ; cmp al,'9' |
||
808 | ; ja err |
||
809 | sub al,48 |
||
810 | shl cx,1 |
||
811 | jc err |
||
812 | mov bx,cx |
||
813 | shl cx,1 |
||
814 | jc err |
||
815 | shl cx,1 |
||
816 | jc err |
||
817 | add cx,bx |
||
818 | jc err |
||
819 | cbw |
||
820 | add cx,ax |
||
821 | jc err |
||
822 | i3: |
||
823 | inc edi |
||
824 | jmp i1 |
||
825 | i_exit: |
||
826 | mov ax,cx |
||
827 | clc |
||
828 | i4: |
||
829 | movzx eax,ax |
||
830 | pop edi |
||
831 | pop dx |
||
832 | pop cx |
||
833 | pop bx |
||
834 | ret |
||
835 | |||
836 | err: |
||
837 | stc |
||
838 | jmp i4 |
||
839 | |||
840 | partition_string: dd 0 |
||
841 | db 32>=>>=> |