[41] | 1 | ; Project name : Assembly Library |
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| 2 | ; Description : Functions for handling characters. |
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| 3 | |
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[376] | 4 | ; |
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[491] | 5 | ; XTIDE Universal BIOS and Associated Tools |
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[376] | 6 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team. |
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| 7 | ; |
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| 8 | ; This program is free software; you can redistribute it and/or modify |
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| 9 | ; it under the terms of the GNU General Public License as published by |
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| 10 | ; the Free Software Foundation; either version 2 of the License, or |
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| 11 | ; (at your option) any later version. |
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[491] | 12 | ; |
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[376] | 13 | ; This program is distributed in the hope that it will be useful, |
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| 14 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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[491] | 16 | ; GNU General Public License for more details. |
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[376] | 17 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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[491] | 18 | ; |
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[376] | 19 | |
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[41] | 20 | ; Section containing code |
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| 21 | SECTION .text |
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| 22 | |
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| 23 | ;-------------------------------------------------------------------- |
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| 24 | ; This macro can only be used within this source file!!! |
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| 25 | ; IS_BETWEEN_IMMEDIATES |
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| 26 | ; Parameters: |
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| 27 | ; %1: Value to check |
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| 28 | ; %2: First accepted value in range |
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| 29 | ; %3: Last accepted value in range |
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| 30 | ; Returns: |
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[491] | 31 | ; CF: Set if character in range |
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[162] | 32 | ; (Jumps to Char_CharIsNotValid if before range) |
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[41] | 33 | ; Corrupts registers: |
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| 34 | ; Nothing |
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| 35 | ;-------------------------------------------------------------------- |
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| 36 | %macro IS_BETWEEN_IMMEDIATES 3 |
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| 37 | cmp %1, %2 |
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[162] | 38 | jb SHORT Char_CharIsNotValid |
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[41] | 39 | cmp %1, (%3)+1 ; Set CF if %1 is lesser |
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| 40 | %endmacro |
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| 41 | |
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| 42 | |
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| 43 | ;-------------------------------------------------------------------- |
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| 44 | ; Char_IsLowerCaseLetterInAL |
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| 45 | ; Parameters: |
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| 46 | ; AL: Character to check |
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| 47 | ; Returns: |
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| 48 | ; CF: Set if character is lower case letter ('a'...'z') |
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| 49 | ; Cleared if character is not lower case letter |
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| 50 | ; Corrupts registers: |
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| 51 | ; Nothing |
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| 52 | ;-------------------------------------------------------------------- |
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[491] | 53 | %ifdef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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| 54 | %ifndef MODULE_HOTKEYS |
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| 55 | %define EXCLUDE |
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| 56 | %endif |
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| 57 | %endif |
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| 58 | |
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| 59 | %ifndef EXCLUDE |
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[369] | 60 | ALIGN STRING_JUMP_ALIGN |
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[41] | 61 | Char_IsLowerCaseLetterInAL: |
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| 62 | IS_BETWEEN_IMMEDIATES al, 'a', 'z' |
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| 63 | ret |
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[491] | 64 | %endif |
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| 65 | %undef EXCLUDE |
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[41] | 66 | |
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[491] | 67 | |
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[41] | 68 | ;-------------------------------------------------------------------- |
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| 69 | ; Char_IsUpperCaseLetterInAL |
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| 70 | ; Parameters: |
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| 71 | ; AL: Character to check |
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| 72 | ; Returns: |
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| 73 | ; CF: Set if character is upper case letter ('A'...'Z') |
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| 74 | ; Cleared if character is not upper case letter |
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| 75 | ; Corrupts registers: |
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| 76 | ; Nothing |
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| 77 | ;-------------------------------------------------------------------- |
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[162] | 78 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[369] | 79 | ALIGN STRING_JUMP_ALIGN |
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[41] | 80 | Char_IsUpperCaseLetterInAL: |
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| 81 | IS_BETWEEN_IMMEDIATES al, 'A', 'Z' |
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| 82 | ret |
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[162] | 83 | %endif |
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[41] | 84 | |
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[491] | 85 | |
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[41] | 86 | ;-------------------------------------------------------------------- |
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| 87 | ; Char_IsHexadecimalDigitInAL |
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| 88 | ; Parameters: |
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| 89 | ; AL: Character to check |
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| 90 | ; Returns: |
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| 91 | ; AL: Character converted to lower case |
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| 92 | ; CF: Set if character is decimal digit ('0'...'F') |
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| 93 | ; Cleared if character is not decimal digit |
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| 94 | ; Corrupts registers: |
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| 95 | ; Nothing |
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| 96 | ;-------------------------------------------------------------------- |
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[162] | 97 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[369] | 98 | ALIGN STRING_JUMP_ALIGN |
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[41] | 99 | Char_IsHexadecimalDigitInAL: |
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| 100 | call Char_IsDecimalDigitInAL |
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| 101 | jc SHORT Char_CharIsValid |
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| 102 | call Char_ALtoLowerCaseLetter |
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| 103 | IS_BETWEEN_IMMEDIATES al, 'a', 'f' |
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| 104 | ret |
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[162] | 105 | %endif |
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[41] | 106 | |
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[491] | 107 | |
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[41] | 108 | ;-------------------------------------------------------------------- |
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| 109 | ; Char_IsDecimalDigitInAL |
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| 110 | ; Parameters: |
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| 111 | ; AL: Character to check |
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| 112 | ; Returns: |
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| 113 | ; CF: Set if character is decimal digit ('0'...'9') |
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| 114 | ; Cleared if character is not decimal digit |
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| 115 | ; Corrupts registers: |
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| 116 | ; Nothing |
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| 117 | ;-------------------------------------------------------------------- |
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[201] | 118 | %ifndef MODULE_STRINGS_COMPRESSED |
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[369] | 119 | ALIGN STRING_JUMP_ALIGN |
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[41] | 120 | Char_IsDecimalDigitInAL: |
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| 121 | IS_BETWEEN_IMMEDIATES al, '0', '9' |
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| 122 | ret |
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[194] | 123 | %endif |
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[41] | 124 | |
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[491] | 125 | |
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[41] | 126 | ;-------------------------------------------------------------------- |
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| 127 | ; Char_ConvertIntegerToALfromDigitInALwithBaseInBX |
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| 128 | ; Parameters: |
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| 129 | ; AL: Character to convert |
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| 130 | ; BX: Numeric base (10 or 16) |
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| 131 | ; Returns: |
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| 132 | ; AL: Character converted to integer |
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| 133 | ; CF: Set if character was valid |
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| 134 | ; Cleared if character was invalid |
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| 135 | ; Corrupts registers: |
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| 136 | ; Nothing |
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| 137 | ;-------------------------------------------------------------------- |
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[162] | 138 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[369] | 139 | ALIGN STRING_JUMP_ALIGN |
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[41] | 140 | Char_ConvertIntegerToALfromDigitInALwithBaseInBX: |
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| 141 | push dx |
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| 142 | call Char_GetFilterFunctionToDXforNumericBaseInBX |
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| 143 | call dx ; Converts to lower case |
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| 144 | pop dx |
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[162] | 145 | jnc SHORT Char_CharIsNotValid |
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[41] | 146 | |
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| 147 | cmp al, '9' ; Decimal digit |
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| 148 | jbe SHORT .ConvertToDecimalDigit |
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[145] | 149 | sub al, 'a'-'0'-10 ; Convert to hexadecimal integer |
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[369] | 150 | ALIGN STRING_JUMP_ALIGN |
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[41] | 151 | .ConvertToDecimalDigit: |
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| 152 | sub al, '0' ; Convert to decimal integer |
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[162] | 153 | ; Fall to Char_CharIsValid |
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| 154 | %endif |
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[41] | 155 | |
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[491] | 156 | |
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[41] | 157 | ;-------------------------------------------------------------------- |
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[162] | 158 | ; Char_CharIsValid |
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| 159 | ; Char_CharIsNotValid |
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[41] | 160 | ; Parameters: |
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| 161 | ; Nothing |
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| 162 | ; Returns: |
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[162] | 163 | ; CF: Set for Char_CharIsValid |
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| 164 | ; Cleared for Char_CharIsNotValid |
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[41] | 165 | ; Corrupts registers: |
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| 166 | ; Nothing |
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| 167 | ;-------------------------------------------------------------------- |
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[162] | 168 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[369] | 169 | ALIGN STRING_JUMP_ALIGN |
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[41] | 170 | Char_CharIsValid: |
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| 171 | stc |
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| 172 | ret |
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[162] | 173 | %endif |
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[41] | 174 | |
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[491] | 175 | |
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| 176 | %ifdef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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| 177 | %ifndef MODULE_HOTKEYS |
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| 178 | %define EXCLUDE |
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| 179 | %endif |
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| 180 | %ifndef MODULE_STRINGS_COMPRESSED |
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| 181 | %undef EXCLUDE |
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| 182 | %endif |
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| 183 | %endif |
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| 184 | |
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| 185 | %ifndef EXCLUDE |
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[369] | 186 | ALIGN STRING_JUMP_ALIGN |
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[162] | 187 | Char_CharIsNotValid: |
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[41] | 188 | clc |
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| 189 | ret |
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[491] | 190 | %endif |
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| 191 | %undef EXCLUDE |
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[41] | 192 | |
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| 193 | |
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| 194 | ;-------------------------------------------------------------------- |
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| 195 | ; Char_ALtoLowerCaseLetter |
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| 196 | ; Parameters: |
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| 197 | ; AL: Character to convert |
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| 198 | ; Returns: |
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| 199 | ; AL: Character with possible conversion |
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| 200 | ; Corrupts registers: |
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| 201 | ; Nothing |
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| 202 | ;-------------------------------------------------------------------- |
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[162] | 203 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[369] | 204 | ALIGN STRING_JUMP_ALIGN |
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[41] | 205 | Char_ALtoLowerCaseLetter: |
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| 206 | call Char_IsUpperCaseLetterInAL ; Is upper case character? |
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[181] | 207 | jmp SHORT Char_ALtoUpperCaseLetter.CheckCF |
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[162] | 208 | %endif |
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[41] | 209 | |
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[491] | 210 | |
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[41] | 211 | ;-------------------------------------------------------------------- |
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| 212 | ; Char_ALtoUpperCaseLetter |
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| 213 | ; Parameters: |
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| 214 | ; AL: Character to convert |
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| 215 | ; Returns: |
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| 216 | ; AL: Character with possible conversion |
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| 217 | ; Corrupts registers: |
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| 218 | ; Nothing |
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| 219 | ;-------------------------------------------------------------------- |
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[491] | 220 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[369] | 221 | ALIGN STRING_JUMP_ALIGN |
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[41] | 222 | Char_ALtoUpperCaseLetter: |
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| 223 | call Char_IsLowerCaseLetterInAL ; Is lower case character? |
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[181] | 224 | .CheckCF: |
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| 225 | jnc SHORT Char_ChangeCaseInAL.Return |
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| 226 | ; Fall to Char_ChangeCaseInAL |
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[489] | 227 | %endif |
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[181] | 228 | |
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[491] | 229 | |
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[181] | 230 | ;-------------------------------------------------------------------- |
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| 231 | ; Char_ChangeCaseInAL |
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| 232 | ; Parameters: |
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| 233 | ; AL: Character to convert (must be A-Z or a-z) |
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| 234 | ; Returns: |
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| 235 | ; AL: Character converted |
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| 236 | ; Corrupts registers: |
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| 237 | ; Nothing |
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| 238 | ;-------------------------------------------------------------------- |
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[491] | 239 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[181] | 240 | Char_ChangeCaseInAL: |
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| 241 | xor al, 32 |
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[41] | 242 | .Return: |
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| 243 | ret |
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[491] | 244 | %endif |
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[41] | 245 | |
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[491] | 246 | |
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[41] | 247 | ;-------------------------------------------------------------------- |
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| 248 | ; Char_GetFilterFunctionToDXforNumericBaseInBX |
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| 249 | ; Parameters |
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| 250 | ; BX: Numeric base (10 or 16) |
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| 251 | ; Returns: |
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| 252 | ; CS:DX: Ptr to character filter function |
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| 253 | ; Corrupts registers: |
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| 254 | ; Nothing |
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| 255 | ;-------------------------------------------------------------------- |
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[162] | 256 | %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS |
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[369] | 257 | ALIGN STRING_JUMP_ALIGN |
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[41] | 258 | Char_GetFilterFunctionToDXforNumericBaseInBX: |
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| 259 | mov dx, Char_IsDecimalDigitInAL |
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| 260 | cmp bl, 10 |
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| 261 | je SHORT .Return |
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[162] | 262 | mov dx, Char_IsHexadecimalDigitInAL |
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[41] | 263 | .Return: |
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| 264 | ret |
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[162] | 265 | %endif |
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