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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
593 | mikedld | 2 | ;; ;; |
2465 | Serge | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
431 | serge | 4 | ;; Distributed under terms of the GNU General Public License ;; |
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: 3555 $ |
21 | |||
22 | |||
1 | ha | 23 | iglobal |
3500 | Serge | 24 | |
25 | if lang eq sp |
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26 | include 'fs/fs-sp.inc' |
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27 | else |
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2434 | Serge | 28 | dir0: |
29 | db 'HARDDISK ' |
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1 | ha | 30 | db 'RAMDISK ' |
31 | db 'FLOPPYDISK ' |
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32 | db 0 |
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33 | |||
2434 | Serge | 34 | dir1: |
35 | db 'FIRST ' |
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1 | ha | 36 | db 'SECOND ' |
37 | db 'THIRD ' |
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38 | db 'FOURTH ' |
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39 | db 0 |
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3500 | Serge | 40 | end if |
1 | ha | 41 | |
42 | not_select_IDE db 0 |
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43 | |||
2434 | Serge | 44 | hd_address_table: |
45 | dd 0x1f0,0x00,0x1f0,0x10 |
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1 | ha | 46 | dd 0x170,0x00,0x170,0x10 |
47 | endg |
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48 | |||
74 | mario79 | 49 | file_system: |
50 | |||
1 | ha | 51 | ; IN: |
52 | ; |
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133 | diamond | 53 | ; eax = 0 ; read file /RamDisk/First 6 |
1 | ha | 54 | ; eax = 8 ; lba read |
55 | ; eax = 15 ; get_disk_info |
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56 | ; |
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57 | ; OUT: |
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58 | ; |
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59 | ; eax = 0 : read ok |
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61 | halyavin | 60 | ; eax = 1 : no hd base and/or partition defined |
71 | diamond | 61 | ; eax = 2 : function is unsupported for this FS |
1 | ha | 62 | ; eax = 3 : unknown FS |
63 | ; eax = 4 : partition not defined at hd |
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64 | ; eax = 5 : file not found |
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65 | ; eax = 6 : end of file |
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66 | ; eax = 7 : memory pointer not in application area |
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67 | ; eax = 8 : disk full |
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68 | ; eax = 9 : fat table corrupted |
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69 | ; eax = 10 : access denied |
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83 | diamond | 70 | ; eax = 11 : disk error |
1 | ha | 71 | ; |
72 | ; ebx = size |
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73 | |||
61 | halyavin | 74 | ; \begin{diamond}[18.03.2006] |
75 | ; for subfunction 16 (start application) error codes must be negative |
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64 | mario79 | 76 | ; because positive values are valid PIDs |
61 | halyavin | 77 | ; so possible return values are: |
78 | ; eax > 0 : process created, eax=PID |
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79 | |||
80 | ; -0x10 <= eax < 0 : -eax is filesystem error code: |
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81 | ; eax = -1 = 0xFFFFFFFF : no hd base and/or partition defined |
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82 | ; eax = -3 = 0xFFFFFFFD : unknown FS |
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83 | ; eax = -5 = 0xFFFFFFFB : file not found |
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84 | ; eax = -6 = 0xFFFFFFFA : unexpected end of file (probably not executable file) |
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85 | ; eax = -9 = 0xFFFFFFF7 : fat table corrupted |
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86 | ; eax = -10 = 0xFFFFFFF6 : access denied |
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87 | |||
88 | ; -0x20 <= eax < -0x10: eax is process creation error code: |
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89 | ; eax = -0x20 = 0xFFFFFFE0 : too many processes |
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90 | ; eax = -0x1F = 0xFFFFFFE1 : not Menuet/Kolibri executable |
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91 | ; eax = -0x1E = 0xFFFFFFE2 : no memory |
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92 | |||
93 | ; ebx is not changed |
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94 | |||
95 | ; \end{diamond}[18.03.2006] |
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96 | |||
1 | ha | 97 | ; Extract parameters |
465 | serge | 98 | ; add eax, std_application_base_address ; abs start of info block |
1 | ha | 99 | |
2434 | Serge | 100 | cmp dword [eax+0], 15; GET_DISK_INFO |
101 | je fs_info |
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1 | ha | 102 | |
2434 | Serge | 103 | cmp dword [CURRENT_TASK], 1; no memory checks for kernel requests |
104 | jz no_checks_for_kernel |
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105 | mov edx, eax |
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106 | cmp dword [eax+0], 1 |
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107 | jnz .usual_check |
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108 | mov ebx, [eax+12] |
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465 | serge | 109 | ; add ebx,std_application_base_address |
2434 | Serge | 110 | mov ecx, [eax+8] |
111 | call check_region |
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112 | test eax, eax |
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113 | jnz area_in_app_mem |
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379 | serge | 114 | |
1 | ha | 115 | .error_output: |
2434 | Serge | 116 | mov esi, buffer_failed |
117 | call sys_msg_board_str |
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61 | halyavin | 118 | ; mov eax,7 |
2434 | Serge | 119 | mov dword [esp+36], 7 |
120 | ret |
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1 | ha | 121 | iglobal |
61 | halyavin | 122 | buffer_failed db 'K : Buffer check failed',13,10,0 |
379 | serge | 123 | endg |
1 | ha | 124 | .usual_check: |
2434 | Serge | 125 | cmp dword [eax+0], 0 |
126 | mov ecx, 512 |
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127 | jnz .small_size |
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128 | mov ecx, [eax+8] |
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129 | shl ecx, 9 |
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1 | ha | 130 | .small_size: |
2434 | Serge | 131 | mov ebx, [eax+12] |
465 | serge | 132 | ; add ebx,std_application_base_address |
2434 | Serge | 133 | call check_region |
134 | test eax, eax |
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135 | jz .error_output |
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1 | ha | 136 | area_in_app_mem: |
2434 | Serge | 137 | mov eax, edx |
1 | ha | 138 | no_checks_for_kernel: |
139 | |||
140 | fs_read: |
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141 | |||
2434 | Serge | 142 | mov ebx, [eax+20] ; program wants root directory ? |
143 | test bl, bl |
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144 | je fs_getroot |
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145 | test bh, bh |
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146 | jne fs_noroot |
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1 | ha | 147 | fs_getroot: |
61 | halyavin | 148 | ; \begin{diamond}[18.03.2006] |
149 | ; root - only read is allowed |
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150 | ; other operations return "access denied", eax=10 |
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151 | ; (execute operation returns eax=-10) |
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2434 | Serge | 152 | cmp dword [eax], 0 |
153 | jz .read_root |
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154 | mov dword [esp+36], 10 |
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155 | ret |
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61 | halyavin | 156 | .read_root: |
157 | ; \end{diamond}[18.03.2006] |
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2434 | Serge | 158 | mov esi, dir0 |
159 | mov edi, [eax+12] |
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465 | serge | 160 | ; add edi,std_application_base_address |
2434 | Serge | 161 | mov ecx, 11 |
162 | push ecx |
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64 | mario79 | 163 | ; cld ; already is |
2434 | Serge | 164 | rep movsb |
165 | mov al, 0x10 |
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166 | stosb |
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167 | add edi, 32-11-1 |
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168 | pop ecx |
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169 | rep movsb |
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170 | stosb |
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171 | and dword [esp+36], 0; ok read |
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172 | mov dword [esp+24], 32*2; size of root |
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173 | ret |
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1 | ha | 174 | |
175 | fs_info: ;start of code - Mihasik |
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2434 | Serge | 176 | push eax |
177 | cmp [eax+21], byte 'r' |
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178 | je fs_info_r |
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179 | cmp [eax+21], byte 'R' |
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180 | je fs_info_r |
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181 | mov eax, 3 ;if unknown disk |
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182 | xor ebx, ebx |
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183 | xor ecx, ecx |
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184 | xor edx, edx |
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185 | jmp fs_info1 |
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1 | ha | 186 | fs_info_r: |
2434 | Serge | 187 | call ramdisk_free_space;if ramdisk |
188 | mov ecx, edi ;free space in ecx |
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189 | shr ecx, 9 ;free clusters |
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190 | mov ebx, 2847 ;total clusters |
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191 | mov edx, 512 ;cluster size |
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192 | xor eax, eax ;always 0 |
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1 | ha | 193 | fs_info1: |
2434 | Serge | 194 | pop edi |
195 | mov [esp+36], eax |
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196 | mov [esp+24], ebx ; total clusters on disk |
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197 | mov [esp+32], ecx ; free clusters on disk |
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198 | mov [edi], edx ; cluster size in bytes |
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199 | ret ;end of code - Mihasik |
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1 | ha | 200 | |
201 | fs_noroot: |
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202 | |||
2434 | Serge | 203 | push dword [eax+0] ; read/write/delete/.../makedir/rename/lba/run |
204 | push dword [eax+4] ; 512 block number to read |
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205 | push dword [eax+8] ; bytes to write/append or 512 blocks to read |
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206 | mov ebx, [eax+12] |
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465 | serge | 207 | ; add ebx,std_application_base_address |
2434 | Serge | 208 | push ebx ; abs start of return/save area |
1 | ha | 209 | |
2434 | Serge | 210 | lea esi, [eax+20] ; abs start of dir + filename |
211 | mov edi, [eax+16] |
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465 | serge | 212 | ; add edi,std_application_base_address ; abs start of work area |
1 | ha | 213 | |
2434 | Serge | 214 | call expand_pathz |
1 | ha | 215 | |
2434 | Serge | 216 | push edi ; dir start |
217 | push ebx ; name of file start |
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1 | ha | 218 | |
2434 | Serge | 219 | mov eax, [edi+1] |
220 | cmp eax, 'RD ' |
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221 | je fs_yesramdisk |
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222 | cmp eax, 'RAMD' |
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223 | jne fs_noramdisk |
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1 | ha | 224 | |
225 | fs_yesramdisk: |
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226 | |||
2434 | Serge | 227 | cmp byte [edi+1+11], 0 |
228 | je fs_give_dir1 |
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1 | ha | 229 | |
2434 | Serge | 230 | mov eax, [edi+1+12] |
231 | cmp eax, '1 ' |
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232 | je fs_yesramdisk_first |
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233 | cmp eax, 'FIRS' |
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234 | jne fs_noramdisk |
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1 | ha | 235 | |
236 | fs_yesramdisk_first: |
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237 | |||
2434 | Serge | 238 | cmp dword [esp+20], 8; LBA read ramdisk |
239 | jne fs_no_LBA_read_ramdisk |
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1 | ha | 240 | |
2434 | Serge | 241 | mov eax, [esp+16] ; LBA block to read |
242 | mov ecx, [esp+8] ; abs pointer to return area |
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1 | ha | 243 | |
2434 | Serge | 244 | call LBA_read_ramdisk |
245 | jmp file_system_return |
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1 | ha | 246 | |
247 | |||
248 | fs_no_LBA_read_ramdisk: |
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249 | |||
2434 | Serge | 250 | cmp dword [esp+20], 0; READ |
251 | jne fs_noramdisk_read |
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1 | ha | 252 | |
2434 | Serge | 253 | mov eax, [esp+4] ; fname |
254 | add eax, 2*12+1 |
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255 | mov ebx, [esp+16] ; block start |
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256 | inc ebx |
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257 | mov ecx, [esp+12] ; block count |
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258 | mov edx, [esp+8] ; return |
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259 | mov esi, [esp+0] |
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260 | sub esi, eax |
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261 | add esi, 12+1 ; file name length |
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262 | call fileread |
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1 | ha | 263 | |
2434 | Serge | 264 | jmp file_system_return |
1 | ha | 265 | |
266 | |||
267 | fs_noramdisk_read: |
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268 | fs_noramdisk: |
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379 | serge | 269 | |
1 | ha | 270 | ;******************************************************************** |
2434 | Serge | 271 | mov eax, [edi+1] |
272 | cmp eax, 'FD ' |
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273 | je fs_yesflpdisk |
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274 | cmp eax, 'FLOP' |
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275 | jne fs_noflpdisk |
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1 | ha | 276 | |
277 | fs_yesflpdisk: |
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2434 | Serge | 278 | call reserve_flp |
1 | ha | 279 | |
2434 | Serge | 280 | cmp byte [edi+1+11], 0 |
281 | je fs_give_dir1 |
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1 | ha | 282 | |
2434 | Serge | 283 | mov eax, [edi+1+12] |
284 | cmp eax, '1 ' |
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285 | je fs_yesflpdisk_first |
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286 | cmp eax, 'FIRS' |
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287 | je fs_yesflpdisk_first |
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288 | cmp eax, '2 ' |
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289 | je fs_yesflpdisk_second |
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290 | cmp eax, 'SECO' |
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291 | jne fs_noflpdisk |
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292 | jmp fs_yesflpdisk_second |
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1 | ha | 293 | |
294 | fs_yesflpdisk_first: |
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2434 | Serge | 295 | mov [flp_number], 1 |
296 | jmp fs_yesflpdisk_start |
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1 | ha | 297 | fs_yesflpdisk_second: |
2434 | Serge | 298 | mov [flp_number], 2 |
1 | ha | 299 | fs_yesflpdisk_start: |
2434 | Serge | 300 | cmp dword [esp+20], 0; READ |
301 | jne fs_noflpdisk_read |
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1 | ha | 302 | |
2434 | Serge | 303 | mov eax, [esp+4] ; fname |
304 | add eax, 2*12+1 |
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305 | mov ebx, [esp+16] ; block start |
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306 | inc ebx |
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307 | mov ecx, [esp+12] ; block count |
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308 | mov edx, [esp+8] ; return |
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309 | mov esi, [esp+0] |
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310 | sub esi, eax |
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311 | add esi, 12+1 ; file name length |
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312 | call floppy_fileread |
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1 | ha | 313 | |
2434 | Serge | 314 | jmp file_system_return |
1 | ha | 315 | |
316 | |||
317 | fs_noflpdisk_read: |
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318 | fs_noflpdisk: |
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319 | ;***************************************************************** |
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379 | serge | 320 | |
2434 | Serge | 321 | mov eax, [edi+1] |
322 | cmp eax, 'HD0 ' |
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323 | je fs_yesharddisk_IDE0 |
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324 | cmp eax, 'HD1 ' |
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325 | je fs_yesharddisk_IDE1 |
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326 | cmp eax, 'HD2 ' |
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327 | je fs_yesharddisk_IDE2 |
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328 | cmp eax, 'HD3 ' |
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329 | je fs_yesharddisk_IDE3 |
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330 | jmp old_path_harddisk |
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1 | ha | 331 | fs_yesharddisk_IDE0: |
2434 | Serge | 332 | call reserve_hd1 |
333 | mov [hdbase], 0x1f0 |
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334 | mov [hdid], 0x0 |
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335 | mov [hdpos], 1 |
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336 | jmp fs_yesharddisk_partition |
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1 | ha | 337 | fs_yesharddisk_IDE1: |
2434 | Serge | 338 | call reserve_hd1 |
339 | mov [hdbase], 0x1f0 |
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340 | mov [hdid], 0x10 |
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341 | mov [hdpos], 2 |
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342 | jmp fs_yesharddisk_partition |
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1 | ha | 343 | fs_yesharddisk_IDE2: |
2434 | Serge | 344 | call reserve_hd1 |
345 | mov [hdbase], 0x170 |
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346 | mov [hdid], 0x0 |
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347 | mov [hdpos], 3 |
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348 | jmp fs_yesharddisk_partition |
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1 | ha | 349 | fs_yesharddisk_IDE3: |
2434 | Serge | 350 | call reserve_hd1 |
351 | mov [hdbase], 0x170 |
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352 | mov [hdid], 0x10 |
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353 | mov [hdpos], 4 |
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1 | ha | 354 | fs_yesharddisk_partition: |
321 | diamond | 355 | call reserve_hd_channel |
379 | serge | 356 | ; call choice_necessity_partition |
357 | ; jmp fs_yesharddisk_all |
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2434 | Serge | 358 | jmp fs_for_new_semantic |
1 | ha | 359 | |
360 | choice_necessity_partition: |
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2434 | Serge | 361 | mov eax, [edi+1+12] |
362 | call StringToNumber |
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363 | mov [fat32part], eax |
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1 | ha | 364 | choice_necessity_partition_1: |
2434 | Serge | 365 | mov ecx, [hdpos] |
366 | xor eax, eax |
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367 | mov [hd_entries], eax; entries in hd cache |
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368 | mov edx, DRIVE_DATA+2 |
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369 | cmp ecx, 0x80 |
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370 | jb search_partition_array |
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371 | mov ecx, 4 |
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1 | ha | 372 | search_partition_array: |
2434 | Serge | 373 | mov bl, [edx] |
374 | movzx ebx, bl |
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375 | add eax, ebx |
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376 | inc edx |
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377 | loop search_partition_array |
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378 | mov ecx, [hdpos] |
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379 | mov edx, BiosDiskPartitions |
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380 | sub ecx, 0x80 |
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381 | jb .s |
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382 | je .f |
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709 | diamond | 383 | @@: |
2434 | Serge | 384 | mov ebx, [edx] |
385 | add edx, 4 |
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386 | add eax, ebx |
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387 | loop @b |
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388 | jmp .f |
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709 | diamond | 389 | .s: |
2434 | Serge | 390 | sub eax, ebx |
709 | diamond | 391 | .f: |
2434 | Serge | 392 | add eax, [known_part]; add eax,[fat32part] |
393 | dec eax |
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394 | xor edx, edx |
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395 | imul eax, 100 |
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396 | add eax, DRIVE_DATA+0xa |
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397 | mov [transfer_adress], eax |
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398 | call partition_data_transfer_1 |
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399 | ret |
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1 | ha | 400 | |
401 | old_path_harddisk: |
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2434 | Serge | 402 | mov eax, [edi+1] |
403 | cmp eax, 'HD ' |
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404 | je fs_yesharddisk |
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405 | cmp eax, 'HARD' |
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406 | jne fs_noharddisk |
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1 | ha | 407 | |
408 | fs_yesharddisk: |
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2434 | Serge | 409 | cmp dword [esp+20], 8; LBA read |
410 | jne fs_no_LBA_read |
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411 | mov eax, [esp+16] ; LBA block to read |
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412 | lea ebx, [edi+1+12] ; pointer to FIRST/SECOND/THIRD/FOURTH |
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413 | mov ecx, [esp+8] ; abs pointer to return area |
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414 | call LBA_read |
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415 | jmp file_system_return |
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1 | ha | 416 | |
417 | fs_no_LBA_read: |
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418 | |||
2434 | Serge | 419 | cmp byte [edi+1+11], 0; directory read |
420 | je fs_give_dir1 |
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421 | call reserve_hd1 |
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1 | ha | 422 | fs_for_new_semantic: |
2434 | Serge | 423 | call choice_necessity_partition |
1 | ha | 424 | |
425 | fs_yesharddisk_all: |
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2434 | Serge | 426 | mov eax, 1 |
427 | mov ebx, [esp+24+24] |
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428 | cmp [hdpos], 0 ; is hd base set? |
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429 | jz hd_err_return |
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430 | cmp [fat32part], 0 ; is partition set? |
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431 | jnz @f |
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63 | halyavin | 432 | hd_err_return: |
2434 | Serge | 433 | call free_hd_channel |
434 | and [hd1_status], 0 |
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435 | jmp file_system_return |
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63 | halyavin | 436 | @@: |
1 | ha | 437 | |
2434 | Serge | 438 | call free_hd_channel |
439 | and [hd1_status], 0 |
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1 | ha | 440 | |
441 | fs_noharddisk: |
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61 | halyavin | 442 | ; \begin{diamond}[18.03.2006] |
2434 | Serge | 443 | mov eax, 5 ; file not found |
3555 | Serge | 444 | ; а может быть, возвращать другой код ошибки? |
2434 | Serge | 445 | mov ebx, [esp+24+24]; do not change ebx in application |
61 | halyavin | 446 | ; \end{diamond}[18.03.2006] |
1 | ha | 447 | |
448 | file_system_return: |
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449 | |||
2434 | Serge | 450 | add esp, 24 |
1 | ha | 451 | |
2434 | Serge | 452 | mov [esp+36], eax |
453 | mov [esp+24], ebx |
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454 | ret |
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1 | ha | 455 | |
456 | |||
457 | fs_give_dir1: |
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458 | |||
61 | halyavin | 459 | ; \begin{diamond}[18.03.2006] |
460 | ; /RD,/FD,/HD - only read is allowed |
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461 | ; other operations return "access denied", eax=10 |
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462 | ; (execute operation returns eax=-10) |
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2434 | Serge | 463 | cmp dword [esp+20], 0 |
464 | jz .read |
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465 | add esp, 20 |
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466 | pop ecx |
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467 | mov dword [esp+36], 10 |
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468 | ret |
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61 | halyavin | 469 | .read: |
470 | ; \end{diamond}[18.03.2006] |
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2434 | Serge | 471 | mov al, 0x10 |
472 | mov ebx, 1 |
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473 | mov edi, [esp+8] |
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474 | mov esi, dir1 |
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1 | ha | 475 | fs_d1_new: |
2434 | Serge | 476 | mov ecx, 11 |
61 | halyavin | 477 | ; cld |
2434 | Serge | 478 | rep movsb |
479 | stosb |
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480 | add edi, 32-11-1 |
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481 | dec ebx |
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482 | jne fs_d1_new |
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1 | ha | 483 | |
2434 | Serge | 484 | add esp, 24 |
1 | ha | 485 | |
2434 | Serge | 486 | and dword [esp+36], 0; ok read |
487 | mov dword [esp+24], 32*1; dir/data size |
||
488 | ret |
||
1 | ha | 489 | |
490 | |||
491 | |||
492 | LBA_read_ramdisk: |
||
493 | |||
2434 | Serge | 494 | cmp [lba_read_enabled], 1 |
495 | je lbarrl1 |
||
1 | ha | 496 | |
2434 | Serge | 497 | xor ebx, ebx |
498 | mov eax, 2 |
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499 | ret |
||
1 | ha | 500 | |
501 | lbarrl1: |
||
502 | |||
2434 | Serge | 503 | cmp eax, 18*2*80 |
504 | jb lbarrl2 |
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505 | xor ebx, ebx |
||
506 | mov eax, 3 |
||
507 | ret |
||
1 | ha | 508 | |
509 | lbarrl2: |
||
510 | |||
2434 | Serge | 511 | pushad |
1 | ha | 512 | |
2434 | Serge | 513 | call restorefatchain |
1 | ha | 514 | |
2434 | Serge | 515 | mov edi, ecx |
516 | mov esi, eax |
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1 | ha | 517 | |
2434 | Serge | 518 | shl esi, 9 |
519 | add esi, RAMDISK |
||
520 | mov ecx, 512/4 |
||
61 | halyavin | 521 | ; cld |
2434 | Serge | 522 | rep movsd |
1 | ha | 523 | |
2434 | Serge | 524 | popad |
1 | ha | 525 | |
2434 | Serge | 526 | xor ebx, ebx |
527 | xor eax, eax |
||
528 | ret |
||
1 | ha | 529 | |
530 | LBA_read: |
||
531 | |||
532 | ; IN: |
||
533 | ; |
||
534 | ; eax = LBA block to read |
||
535 | ; ebx = pointer to FIRST/SECOND/THIRD/FOURTH |
||
536 | ; ecx = abs pointer to return area |
||
537 | |||
2434 | Serge | 538 | cmp [lba_read_enabled], 1 |
539 | je lbarl1 |
||
540 | mov eax, 2 |
||
541 | ret |
||
1 | ha | 542 | |
543 | lbarl1: |
||
544 | |||
2434 | Serge | 545 | call reserve_hd1 |
1 | ha | 546 | |
2434 | Serge | 547 | push eax |
548 | push ecx |
||
1 | ha | 549 | |
2434 | Serge | 550 | mov edi, hd_address_table |
551 | mov esi, dir1 |
||
552 | mov eax, [ebx] |
||
553 | mov edx, '1 ' |
||
554 | mov ecx, 4 |
||
1 | ha | 555 | blar0: |
2434 | Serge | 556 | cmp eax, [esi] |
557 | je blar2 |
||
558 | cmp eax, edx |
||
559 | je blar2 |
||
560 | inc edx |
||
561 | add edi, 8 |
||
562 | add esi, 11 |
||
563 | dec ecx |
||
564 | jnz blar0 |
||
1 | ha | 565 | |
2434 | Serge | 566 | mov eax, 1 |
567 | mov ebx, 1 |
||
568 | jmp LBA_read_ret |
||
1 | ha | 569 | |
570 | blar2: |
||
2434 | Serge | 571 | mov eax, [edi+0] |
572 | mov ebx, [edi+4] |
||
1 | ha | 573 | |
2434 | Serge | 574 | mov [hdbase], eax |
575 | mov [hdid], ebx |
||
64 | mario79 | 576 | |
2434 | Serge | 577 | call wait_for_hd_idle |
578 | cmp [hd_error], 0 |
||
579 | jne hd_lba_error |
||
1 | ha | 580 | |
581 | ; eax = hd port |
||
582 | ; ebx = set for primary (0x00) or slave (0x10) |
||
583 | |||
2434 | Serge | 584 | cli |
1 | ha | 585 | |
2434 | Serge | 586 | mov edx, eax |
587 | inc edx |
||
588 | xor eax, eax |
||
589 | out dx, al |
||
590 | inc edx |
||
591 | inc eax |
||
592 | out dx, al |
||
593 | inc edx |
||
594 | mov eax, [esp+4] |
||
595 | out dx, al |
||
596 | shr eax, 8 |
||
597 | inc edx |
||
598 | out dx, al |
||
599 | shr eax, 8 |
||
600 | inc edx |
||
601 | out dx, al |
||
602 | shr eax, 8 |
||
603 | inc edx |
||
604 | and al, 1+2+4+8 |
||
605 | add al, bl |
||
606 | add al, 128+64+32 |
||
607 | out dx, al |
||
1 | ha | 608 | |
2434 | Serge | 609 | inc edx |
610 | mov al, 20h |
||
611 | out dx, al |
||
1 | ha | 612 | |
2434 | Serge | 613 | sti |
1 | ha | 614 | |
2434 | Serge | 615 | call wait_for_sector_buffer |
616 | cmp [hd_error], 0 |
||
617 | jne hd_lba_error |
||
1 | ha | 618 | |
2434 | Serge | 619 | cli |
1 | ha | 620 | |
2434 | Serge | 621 | mov edi, [esp+0] |
622 | mov ecx, 256 |
||
623 | sub edx, 7 |
||
624 | cld |
||
625 | rep insw |
||
1 | ha | 626 | |
2434 | Serge | 627 | sti |
1 | ha | 628 | |
2434 | Serge | 629 | xor eax, eax |
630 | xor ebx, ebx |
||
1 | ha | 631 | |
632 | LBA_read_ret: |
||
2434 | Serge | 633 | mov [hd_error], 0 |
634 | mov [hd1_status], 0 |
||
635 | add esp, 2*4 |
||
1 | ha | 636 | |
2434 | Serge | 637 | ret |
1 | ha | 638 | |
639 | |||
640 | expand_pathz: |
||
641 | ; IN: |
||
642 | ; esi = asciiz path & file |
||
643 | ; edi = buffer for path & file name |
||
644 | ; OUT: |
||
645 | ; edi = directory & file : / 11 + / 11 + / 11 - zero terminated |
||
646 | ; ebx = /file name - zero terminated |
||
647 | ; esi = pointer after source |
||
648 | |||
2434 | Serge | 649 | push eax |
650 | push ecx |
||
651 | push edi;[esp+0] |
||
1 | ha | 652 | |
653 | pathz_start: |
||
2434 | Serge | 654 | mov byte [edi], '/' |
655 | inc edi |
||
656 | mov al, 32 |
||
657 | mov ecx, 11 |
||
658 | cld |
||
659 | rep stosb ; clear filename area |
||
660 | sub edi, 11 |
||
661 | mov ebx, edi ; start of dir/file name |
||
1 | ha | 662 | |
663 | pathz_new_char: |
||
2434 | Serge | 664 | mov al, [esi] |
665 | inc esi |
||
666 | cmp al, 0 |
||
667 | je pathz_end |
||
1 | ha | 668 | |
2434 | Serge | 669 | cmp al, '/' |
670 | jne pathz_not_path |
||
671 | cmp edi, ebx ; skip first '/' |
||
672 | jz pathz_new_char |
||
673 | lea edi, [ebx+11] ; start of next directory |
||
674 | jmp pathz_start |
||
1 | ha | 675 | |
676 | pathz_not_path: |
||
2434 | Serge | 677 | cmp al, '.' |
678 | jne pathz_not_ext |
||
679 | lea edi, [ebx+8] ; start of extension |
||
680 | jmp pathz_new_char |
||
1 | ha | 681 | |
682 | pathz_not_ext: |
||
2434 | Serge | 683 | cmp al, 'a' |
684 | jb pathz_not_low |
||
685 | cmp al, 'z' |
||
686 | ja pathz_not_low |
||
687 | sub al, 0x20 ; char to uppercase |
||
1 | ha | 688 | |
689 | pathz_not_low: |
||
2434 | Serge | 690 | mov [edi], al |
691 | inc edi |
||
692 | mov eax, [esp+0] ; start_of_dest_path |
||
693 | add eax, 512 ; keep maximum path under 512 bytes |
||
694 | cmp edi, eax |
||
695 | jb pathz_new_char |
||
1 | ha | 696 | |
697 | pathz_end: |
||
2434 | Serge | 698 | cmp ebx, edi ; if path end with '/' |
699 | jnz pathz_put_zero ; go back 1 level |
||
700 | sub ebx, 12 |
||
1 | ha | 701 | |
702 | pathz_put_zero: |
||
2434 | Serge | 703 | mov byte [ebx+11], 0 |
704 | dec ebx ; include '/' char into file name |
||
705 | pop edi |
||
706 | pop ecx |
||
707 | pop eax |
||
708 | ret |
||
1 | ha | 709 | |
710 | ;******************************************* |
||
711 | ;* string to number |
||
712 | ;* input eax - 4 byte string |
||
713 | ;* output eax - number |
||
714 | ;******************************************* |
||
715 | StringToNumber: |
||
3555 | Serge | 716 | ; ПЕРЕВОД СТРОКОВОГО ЧИСЛА В ЧИСЛОВОЙ ВИД |
717 | ; Вход: |
||
718 | ; EDI - адрес строки с числом. Конец числа отмечен кодом 0Dh |
||
719 | ; Выход: |
||
720 | ; CF - индикатор ошибок: |
||
721 | ; 0 - ошибок нет; |
||
722 | ; 1 - ошибка |
||
723 | ; Если CF=0, то AX - число. |
||
1 | ha | 724 | |
2434 | Serge | 725 | push bx |
726 | push cx |
||
727 | push dx |
||
728 | push edi |
||
729 | mov [partition_string], eax |
||
730 | mov edi, partition_string |
||
731 | xor cx, cx |
||
379 | serge | 732 | i1: |
2434 | Serge | 733 | mov al, [edi] |
734 | cmp al, 32;13 |
||
735 | je i_exit |
||
1 | ha | 736 | ; cmp al,'0' |
737 | ; jb err |
||
738 | ; cmp al,'9' |
||
739 | ; ja err |
||
2434 | Serge | 740 | sub al, 48 |
741 | shl cx, 1 |
||
742 | jc error |
||
743 | mov bx, cx |
||
744 | shl cx, 1 |
||
745 | jc error |
||
746 | shl cx, 1 |
||
747 | jc error |
||
748 | add cx, bx |
||
749 | jc error |
||
750 | cbw |
||
751 | add cx, ax |
||
752 | jc error |
||
1 | ha | 753 | i3: |
2434 | Serge | 754 | inc edi |
755 | jmp i1 |
||
1 | ha | 756 | i_exit: |
2434 | Serge | 757 | mov ax, cx |
758 | clc |
||
1 | ha | 759 | i4: |
2434 | Serge | 760 | movzx eax, ax |
761 | pop edi |
||
762 | pop dx |
||
763 | pop cx |
||
764 | pop bx |
||
765 | ret |
||
1 | ha | 766 | |
1047 | heavyiron | 767 | error: |
2434 | Serge | 768 | stc |
769 | jmp i4 |
||
1 | ha | 770 | |
2434 | Serge | 771 | partition_string: |
772 | dd 0 |
||
1379 | turbanoff | 773 | db 32>=>>=> |