[57] | 1 | ; File name : BiosFile.asm |
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| 2 | ; Project name : XTIDE Univeral BIOS Configurator v2 |
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| 3 | ; Created date : 10.10.2010 |
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[65] | 4 | ; Last update : 30.11.2010 |
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[57] | 5 | ; Author : Tomi Tilli |
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| 6 | ; Description : Functions for loading and saving BIOS image file. |
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| 7 | |
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| 8 | ; Section containing code |
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| 9 | SECTION .text |
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| 10 | |
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| 11 | ;-------------------------------------------------------------------- |
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| 12 | ; BiosFile_LoadFileFromDSSItoRamBuffer |
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| 13 | ; Parameters: |
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| 14 | ; DS:SI: Name of file to open |
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| 15 | ; SS:BP: Menu handle |
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| 16 | ; Returns: |
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| 17 | ; Nothing |
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| 18 | ; Corrupts registers: |
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| 19 | ; AX, BX, CX, DX, SI, DI |
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| 20 | ;-------------------------------------------------------------------- |
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| 21 | ALIGN JUMP_ALIGN |
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| 22 | BiosFile_LoadFileFromDSSItoRamBuffer: |
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| 23 | push ds |
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| 24 | |
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| 25 | call .OpenFileForLoadingFromDSSIandGetSizeToCX |
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| 26 | jc SHORT .DisplayErrorMessage |
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| 27 | call .LoadFileWithNameInDSSIhandleInBXandSizeInCXtoRamBuffer |
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| 28 | jc SHORT .DisplayErrorMessage |
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| 29 | |
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| 30 | mov ax, FLG_CFGVARS_FILELOADED |
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| 31 | call Buffers_NewBiosWithSizeInCXandSourceInAXhasBeenLoadedForConfiguration |
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| 32 | call DisplayFileLoadedSuccesfully |
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| 33 | call FileIO_CloseUsingHandleFromBX |
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| 34 | jmp SHORT .Return |
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| 35 | |
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| 36 | .DisplayErrorMessage: |
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| 37 | call FileIO_CloseUsingHandleFromBX |
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| 38 | call DisplayFailedToLoadFile |
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| 39 | ALIGN JUMP_ALIGN |
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| 40 | .Return: |
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| 41 | pop ds |
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| 42 | ret |
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| 43 | |
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| 44 | ;-------------------------------------------------------------------- |
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| 45 | ; .OpenFileForLoadingFromDSSIandGetSizeToCX |
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| 46 | ; Parameters: |
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| 47 | ; DS:SI: Name of file to open |
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| 48 | ; Returns: |
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| 49 | ; BX: File handle (if succesfull) |
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| 50 | ; CX: File size (if succesfull) |
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| 51 | ; CF: Clear if successfull |
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| 52 | ; Set if error |
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| 53 | ; Corrupts registers: |
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| 54 | ; AX, DX |
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| 55 | ;-------------------------------------------------------------------- |
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| 56 | ALIGN JUMP_ALIGN |
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| 57 | .OpenFileForLoadingFromDSSIandGetSizeToCX: |
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| 58 | mov al, FILE_ACCESS.ReadOnly |
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| 59 | call FileIO_OpenWithPathInDSSIandFileAccessInAL |
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| 60 | jc SHORT .FileError |
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| 61 | call FileIO_GetFileSizeToDXAXusingHandleFromBXandResetFilePosition |
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| 62 | jc SHORT .FileError |
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| 63 | |
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| 64 | cmp dx, BYTE 1 ; File size over 65536 bytes? |
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| 65 | ja SHORT .FileTooBig |
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| 66 | jb SHORT .CopyFileSizeToCX |
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| 67 | test ax, ax |
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| 68 | jnz SHORT .FileTooBig |
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| 69 | dec ax ; Prepare to load 65535 bytes |
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| 70 | .CopyFileSizeToCX: |
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| 71 | xchg cx, ax |
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| 72 | clc |
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| 73 | ret |
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| 74 | .FileTooBig: |
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| 75 | call DisplayFileTooBig |
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| 76 | stc |
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| 77 | .FileError: |
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| 78 | ret |
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| 79 | |
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| 80 | ;-------------------------------------------------------------------- |
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| 81 | ; .LoadFileWithNameInDSSIhandleInBXandSizeInCXtoRamBuffer |
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| 82 | ; Parameters: |
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| 83 | ; BX: File Handle |
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| 84 | ; CX: File size |
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| 85 | ; DS:SI: File name |
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| 86 | ; Returns: |
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| 87 | ; CF: Clear if successfull |
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| 88 | ; Set if error |
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| 89 | ; Corrupts registers: |
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| 90 | ; AX, SI, DI, DS |
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| 91 | ;-------------------------------------------------------------------- |
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| 92 | ALIGN JUMP_ALIGN |
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| 93 | .LoadFileWithNameInDSSIhandleInBXandSizeInCXtoRamBuffer: |
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| 94 | push es |
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| 95 | |
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| 96 | call Buffers_GetFileBufferToESDI |
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| 97 | call Registers_ExchangeDSSIwithESDI |
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| 98 | call FileIO_ReadCXbytesToDSSIusingHandleFromBX |
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| 99 | jnc SHORT .StoreFileNameToCfgvarsFromESDI |
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| 100 | |
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| 101 | pop es |
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| 102 | ret |
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| 103 | |
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| 104 | ALIGN JUMP_ALIGN |
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| 105 | .StoreFileNameToCfgvarsFromESDI: |
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| 106 | push cx |
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| 107 | |
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| 108 | call Registers_CopyESDItoDSSI ; File name in DS:SI |
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| 109 | push cs |
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| 110 | pop es |
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| 111 | mov di, g_cfgVars+CFGVARS.szOpenedFile |
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| 112 | cld |
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| 113 | call String_CopyDSSItoESDIandGetLengthToCX |
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| 114 | |
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| 115 | pop cx |
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| 116 | pop es |
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| 117 | clc |
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| 118 | ret |
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| 119 | |
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| 120 | |
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| 121 | ;-------------------------------------------------------------------- |
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| 122 | ; BiosFile_SaveUnsavedChanges |
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| 123 | ; Parameters: |
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| 124 | ; SS:BP: Menu handle |
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| 125 | ; Returns: |
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| 126 | ; Nothing |
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| 127 | ; Corrupts registers: |
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| 128 | ; AX, BX, CX, SI, DI |
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| 129 | ;-------------------------------------------------------------------- |
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| 130 | ALIGN JUMP_ALIGN |
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| 131 | BiosFile_SaveUnsavedChanges: |
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| 132 | push ds |
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| 133 | |
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| 134 | push cs |
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| 135 | pop ds |
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| 136 | mov si, g_cfgVars+CFGVARS.szOpenedFile |
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| 137 | call BiosFile_SaveRamBufferToFileInDSSI |
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| 138 | |
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| 139 | pop ds |
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| 140 | ret |
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| 141 | |
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| 142 | |
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| 143 | ;-------------------------------------------------------------------- |
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| 144 | ; BiosFile_SaveRamBufferToFileInDSSI |
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| 145 | ; Parameters: |
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| 146 | ; DS:SI: Name of file to save |
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| 147 | ; SS:BP: Menu handle |
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| 148 | ; Returns: |
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| 149 | ; Nothing |
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| 150 | ; Corrupts registers: |
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| 151 | ; AX, BX, CX, SI, DI |
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| 152 | ;-------------------------------------------------------------------- |
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| 153 | ALIGN JUMP_ALIGN |
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| 154 | BiosFile_SaveRamBufferToFileInDSSI: |
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| 155 | push es |
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| 156 | push ds |
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| 157 | |
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| 158 | mov al, FILE_ACCESS.WriteOnly |
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| 159 | call FileIO_OpenWithPathInDSSIandFileAccessInAL |
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| 160 | jc SHORT .DisplayErrorMessage |
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| 161 | |
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| 162 | call Buffers_GenerateChecksum |
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| 163 | call Buffers_GetFileBufferToESDI |
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| 164 | call Registers_CopyESDItoDSSI |
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[65] | 165 | mov cx, [cs:g_cfgVars+CFGVARS.wImageSizeInWords] |
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| 166 | shl cx, 1 |
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[57] | 167 | call FileIO_WriteCXbytesFromDSSIusingHandleFromBX |
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| 168 | jc SHORT .DisplayErrorMessage |
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| 169 | |
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| 170 | call Buffers_ClearUnsavedChanges |
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| 171 | call DisplayFileSavedSuccesfully |
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| 172 | jmp SHORT .Return |
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| 173 | |
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| 174 | .DisplayErrorMessage: |
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| 175 | call FileIO_CloseUsingHandleFromBX |
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| 176 | call DisplayFailedToSaveFile |
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| 177 | ALIGN JUMP_ALIGN |
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| 178 | .Return: |
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| 179 | pop ds |
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| 180 | pop es |
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| 181 | ret |
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| 182 | |
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| 183 | |
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| 184 | ;-------------------------------------------------------------------- |
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| 185 | ; DisplayFileLoadedSuccesfully |
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| 186 | ; DisplayFileSavedSuccesfully |
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| 187 | ; DisplayFailedToLoadFile |
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| 188 | ; DisplayFailedToSaveFile |
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| 189 | ; DisplayFileTooBig |
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| 190 | ; Parameters: |
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| 191 | ; SS:BP: Menu handle |
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| 192 | ; Returns: |
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| 193 | ; Nothing |
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| 194 | ; Corrupts registers: |
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| 195 | ; AX, DX |
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| 196 | ;-------------------------------------------------------------------- |
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| 197 | ALIGN JUMP_ALIGN |
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| 198 | DisplayFileLoadedSuccesfully: |
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| 199 | mov dx, g_szDlgMainLoadFile |
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| 200 | jmp Dialogs_DisplayNotificationFromCSDX |
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| 201 | |
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| 202 | ALIGN JUMP_ALIGN |
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| 203 | DisplayFileSavedSuccesfully: |
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| 204 | mov dx, g_szDlgMainSaveFile |
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| 205 | jmp Dialogs_DisplayNotificationFromCSDX |
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| 206 | |
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| 207 | DisplayFailedToLoadFile: |
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| 208 | mov dx, g_szDlgMainLoadErr |
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| 209 | jmp Dialogs_DisplayErrorFromCSDX |
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| 210 | |
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| 211 | DisplayFailedToSaveFile: |
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| 212 | mov dx, g_szDlgMainSaveErr |
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| 213 | jmp Dialogs_DisplayErrorFromCSDX |
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| 214 | |
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| 215 | DisplayFileTooBig: |
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| 216 | mov dx, g_szDlgMainFileTooBig |
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| 217 | jmp Dialogs_DisplayErrorFromCSDX |
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