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