Import backup from 2003-10-23
This commit is contained in:
josh committed
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30 files changed
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Executable
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@@ -0,0 +1,2 @@
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del hlibc.a
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ar -r hlibc.a *.o
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Executable
+1
@@ -0,0 +1 @@
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gcc -ffreestanding -fno-builtin -c *.c
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Executable
+1
@@ -0,0 +1 @@
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nasmw -f aout -l io.lst io.asm -o io_a.o
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BIN
Binary file not shown.
+540
@@ -0,0 +1,540 @@
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1
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2 %macro jzfar 1
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3 jnz %%skip
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4 jmp %1
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5 %%skip:
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6
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7 %endmacro
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8
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9 [global _writeCursorPosition]
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10 [global _getCursorPosition]
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11 [global _putc]
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12 [global _puts]
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13 [global _printf]
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14 [global _console_scroll]
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15 [global _console_cls]
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16 [global _putHex]
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17 [global _putDec]
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18 [global _putDecu]
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19
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20
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21 ;
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22 ;void writeCursorPosition(word pos)
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23 ;
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24 _writeCursorPosition:
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25 00000000 55 push ebp
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26 00000001 89E5 mov ebp, esp
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27
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28 00000003 50 push eax
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29 00000004 53 push ebx
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30 00000005 52 push edx
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31
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32 00000006 8B4508 mov eax, [ebp+8] ;cursor position in ax
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33
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34 00000009 88C3 mov bl, al
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35 0000000B 66BAD403 mov dx, 0x03D4
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36 0000000F B00E mov al, 0x0E
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37 00000011 EE out dx, al
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38
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39 00000012 6642 inc dx
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40 00000014 88E0 mov al, ah
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41 00000016 EE out dx, al
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42
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43 00000017 664A dec dx
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44 00000019 B00F mov al, 0x0F
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45 0000001B EE out dx, al
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46
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47 0000001C 6642 inc dx
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48 0000001E 88D8 mov al, bl
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49 00000020 EE out dx, al
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50
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51 00000021 5A pop edx
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52 00000022 5B pop ebx
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53 00000023 58 pop eax
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54 00000024 5D pop ebp
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55
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56 00000025 C3 ret
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57
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58
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59 ;
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60 ;word getCursorPosition()
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61 ;
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62 _getCursorPosition:
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63 00000026 53 push ebx
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64 00000027 52 push edx
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65
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66 00000028 31C0 xor eax, eax
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67 0000002A 66BAD403 mov dx, 0x03D4
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68 0000002E B00E mov al, 0x0E
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69 00000030 EE out dx, al
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70
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71 00000031 6642 inc dx
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72 00000033 EC in al, dx
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73 00000034 88C3 mov bl, al
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74
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75 00000036 664A dec dx
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76 00000038 B00F mov al, 0x0F
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77 0000003A EE out dx, al
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78
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79 0000003B 6642 inc dx
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80 0000003D EC in al, dx
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81 0000003E 88DC mov ah, bl
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82
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83 00000040 5A pop edx
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84 00000041 5B pop ebx
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85
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86 00000042 C3 ret
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87
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88
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89 ;
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90 ;int putc(int chr)
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91 ;
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92 _putc:
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93 00000043 55 push ebp
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94 00000044 89E5 mov ebp, esp
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95 00000046 53 push ebx
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96 00000047 51 push ecx
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97 00000048 52 push edx
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98
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99 00000049 E8D8FFFFFF call _getCursorPosition
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100 0000004E 89C3 mov ebx, eax
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101 00000050 89D9 mov ecx, ebx
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102
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103 00000052 8B4508 mov eax, [ebp+8] ;al=character
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104 00000055 3C0A cmp al, 10 ;newline
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105 00000057 7436 jz putc_newline
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106 00000059 3C09 cmp al, 9 ;tab
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107 0000005B 746B jz putc_tab
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108
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109 0000005D D1E3 shl ebx, 1
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110 0000005F 81C300800B00 add ebx, 0xb8000
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111 00000065 B407 mov ah, 0x07
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112 00000067 668903 mov [ebx], ax
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113 0000006A 89C8 mov eax, ecx
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114 0000006C 40 inc eax
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115 0000006D 3DD0070000 cmp eax, 2000
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116 00000072 750A jnz putc_writeit2
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117 00000074 E86C010000 call _console_scroll
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118 00000079 B880070000 mov eax, 2000-80
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119 putc_writeit2:
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120 0000007E 50 push eax
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121 0000007F E87CFFFFFF call _writeCursorPosition
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122 00000084 81C404000000 add esp, 4
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123 0000008A E96E000000 jmp putc_done
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124
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125 putc_newline:
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126 0000008F 89D8 mov eax, ebx ;eax = cursor position
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127 00000091 BB50000000 mov ebx, 80
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128 00000096 31D2 xor edx, edx
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129 00000098 66F7F3 div bx ;ax=dx:ax/bx, dx=remainder
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130 0000009B 66BB5000 mov bx, 80
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131 0000009F 6629D3 sub bx, dx
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132 000000A2 89C8 mov eax, ecx
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133 000000A4 01D8 add eax, ebx ;eax = new cursor position
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134 000000A6 3DD0070000 cmp eax, 2000
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135 000000AB 750A jnz putc_newline_writeit2
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136 000000AD E833010000 call _console_scroll
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137 000000B2 B880070000 mov eax, 2000-80 ;beginning of last row
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138 putc_newline_writeit2:
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139 000000B7 50 push eax
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140 000000B8 E843FFFFFF call _writeCursorPosition
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141 000000BD 81C404000000 add esp, 4
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142 000000C3 E935000000 jmp putc_done
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143
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144 putc_tab:
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145 000000C8 89D8 mov eax, ebx ;eax = cursor position
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146 000000CA BB08000000 mov ebx, 8
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147 000000CF F6F3 div bl ;al=ax/bl, ah=remainder
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148 000000D1 31D2 xor edx, edx
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149 000000D3 88E2 mov dl, ah
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150 000000D5 66BB0800 mov bx, 8
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151 000000D9 6629D3 sub bx, dx
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152 000000DC 89C8 mov eax, ecx
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153 000000DE 01D8 add eax, ebx ;eax = new cursor position
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154 000000E0 3DD0070000 cmp eax, 2000
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155 000000E5 750A jnz putc_tab_writeit2
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156 000000E7 E8F9000000 call _console_scroll
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157 000000EC B880070000 mov eax, 2000-80 ;beginning of last row
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158 putc_tab_writeit2:
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159 000000F1 50 push eax
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160 000000F2 E809FFFFFF call _writeCursorPosition
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161 000000F7 81C404000000 add esp, 4
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162
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163 putc_done:
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164 000000FD 5A pop edx
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165 000000FE 59 pop ecx
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166 000000FF 5B pop ebx
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167 00000100 5D pop ebp
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168
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169 00000101 C3 ret
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170
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171
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172
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173 ;
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174 ;void printf(char *fmt, ... )
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175 ;
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176 _printf:
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177 00000102 55 push ebp
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178 00000103 89E5 mov ebp, esp
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179 00000105 60 pusha
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180 00000106 8B5D08 mov ebx, [ebp+8] ;ebx = position in format string
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181 00000109 89EE mov esi, ebp
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182 0000010B 81C60C000000 add esi, 12 ;esi = to next variable arg
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183 00000111 31C9 xor ecx, ecx ;ecx used if we encounter a '%'
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184 printf_loop:
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185 00000113 8A03 mov al, [ebx]
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186 00000115 43 inc ebx
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187 00000116 3C00 cmp al, 0
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188 jzfar printf_done
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189 00000118 7505 <1> jnz %%skip
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190 0000011A E9C3000000 <1> jmp %1
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191 <1> %%skip:
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192 <1>
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193 0000011F 81F901000000 cmp ecx, 1
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194 00000125 7417 jz printf_special
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195 00000127 3C25 cmp al, '%'
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196 jzfar printf_percent
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197 00000129 7505 <1> jnz %%skip
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198 0000012B E9A8000000 <1> jmp %1
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199 <1> %%skip:
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200 <1>
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201
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202 00000130 50 push eax
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203 00000131 E80DFFFFFF call _putc
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204 00000136 81C404000000 add esp, 4
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205 0000013C EBD5 jmp printf_loop
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206
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207 printf_special:
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208 0000013E 31C9 xor ecx, ecx
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209 00000140 3C64 cmp al, 'd'
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210 00000142 7419 jz printf_decimal
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211 00000144 3C75 cmp al, 'u'
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212 00000146 7428 jz printf_decimalu
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213 00000148 3C78 cmp al, 'x'
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214 0000014A 7437 jz printf_hex
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215 0000014C 3C25 cmp al, '%'
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216 0000014E 7446 jz printf_ppercent
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217 00000150 3C73 cmp al, 's'
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218 00000152 7453 jz printf_string
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219 00000154 3C63 cmp al, 'c'
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220 00000156 7462 jz printf_char
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221 00000158 E970000000 jmp printf_special_done
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222
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223 printf_decimal:
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224 0000015D 8B06 mov eax, [esi]
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225 0000015F 50 push eax
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226 00000160 E8FE010000 call _putDec
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227 00000165 81C404000000 add esp, 4
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228 0000016B E95D000000 jmp printf_special_done
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229
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230 printf_decimalu:
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231 00000170 8B06 mov eax, [esi]
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232 00000172 50 push eax
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233 00000173 E823010000 call _putDecu
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234 00000178 81C404000000 add esp, 4
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235 0000017E E94A000000 jmp printf_special_done
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236
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237 printf_hex:
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238 00000183 8B06 mov eax, [esi]
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239 00000185 50 push eax
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240 00000186 E8A2000000 call _putHex
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241 0000018B 81C404000000 add esp, 4
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242 00000191 E937000000 jmp printf_special_done
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243
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244 printf_ppercent:
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245 00000196 50 push eax
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246 00000197 E8A7FEFFFF call _putc
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247 0000019C 81C404000000 add esp, 4
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248 000001A2 E926000000 jmp printf_special_done
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249
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250 printf_string:
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251 000001A7 8B06 mov eax, [esi]
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252 000001A9 50 push eax
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253 000001AA E8CD000000 call _puts
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254 000001AF 81C404000000 add esp, 4
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255 000001B5 E913000000 jmp printf_special_done
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256
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257 printf_char:
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258 000001BA 8B06 mov eax, [esi]
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259 000001BC 50 push eax
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260 000001BD E881FEFFFF call _putc
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261 000001C2 81C404000000 add esp, 4
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262 000001C8 E900000000 jmp printf_special_done
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263
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264 printf_special_done
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265 000001CD 81C604000000 add esi, 4 ;point to next extra argument
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266 000001D3 E93BFFFFFF jmp printf_loop
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267
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268 printf_percent:
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269 000001D8 B901000000 mov ecx, 1
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270 000001DD E931FFFFFF jmp printf_loop
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271
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272
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273 printf_done:
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274 000001E2 61 popa
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275 000001E3 5D pop ebp
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276 000001E4 C3 ret
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277
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278
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279
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280 ;
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281 ;void console_scroll()
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282 ;
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283 _console_scroll:
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284 000001E5 60 pusha
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285 000001E6 BEA0800B00 mov esi, 0xb8000+160
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286 000001EB BF00800B00 mov edi, 0xb8000
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287 000001F0 B9C0030000 mov ecx, 960 ;(2000-80)/2
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288 console_scroll_loop:
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289 000001F5 AD lodsd
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290 000001F6 AB stosd
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291 000001F7 E2FC loop console_scroll_loop
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292 000001F9 66B82007 mov ax, 0x0720
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293 000001FD B950000000 mov ecx, 80
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294 console_scroll_loop2:
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295 00000202 66AB stosw
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296 00000204 E2FC loop console_scroll_loop2
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297 00000206 61 popa
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298 00000207 C3 ret
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299
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300 ;
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301 ;void console_cls()
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302 ;
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303 _console_cls:
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304 00000208 60 pusha
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305 00000209 BF00800B00 mov edi, 0xb8000
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306 0000020E 66B82007 mov ax, 0x0720
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307 00000212 B9D0070000 mov ecx, 2000
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308 console_cls_loop:
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309 00000217 66AB stosw
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310 00000219 E2FC loop console_cls_loop
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311 0000021B 6800000000 push dword 0
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312 00000220 E8DBFDFFFF call _writeCursorPosition
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||||
313 00000225 81C404000000 add esp, 4
|
||||
314 0000022B 61 popa
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||||
315 0000022C C3 ret
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||||
316
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317 ;
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318 ;int putHex(dword number)
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319 ;
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320 _putHex:
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321 0000022D 55 push ebp
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322 0000022E 89E5 mov ebp, esp
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323 00000230 60 pusha
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324 00000231 8B4508 mov eax, [ebp+8] ;eax = number to print
|
||||
325 00000234 31DB xor ebx, ebx ;we have not printed a character yet
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||||
326 00000236 B908000000 mov ecx, 8 ;counter for number of characters
|
||||
327
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||||
328 putHex_loop:
|
||||
329 0000023B 50 push eax
|
||||
330 0000023C 51 push ecx
|
||||
331
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||||
332 0000023D 49 dec ecx
|
||||
333 0000023E C1E102 shl ecx, 2 ;edx=counter*4 (amount to shift by)
|
||||
334 00000241 D3E8 shr eax, cl
|
||||
335 00000243 250F000000 and eax, 0x0F
|
||||
336 00000248 80F900 cmp cl, 0
|
||||
337 0000024B 7409 jz putHex_notzero ;if number is 0
|
||||
338 0000024D 3C00 cmp al, 0
|
||||
339 0000024F 7505 jnz putHex_notzero
|
||||
340 00000251 80FB00 cmp bl, 0
|
||||
341 00000254 741F jz putHex_loop_end
|
||||
342 putHex_notzero:
|
||||
343 00000256 B301 mov bl, 1
|
||||
344 00000258 0530000000 add eax, '0'
|
||||
345 0000025D 3D39000000 cmp eax, '9'
|
||||
346 00000262 7605 jbe putHex_dontadjust
|
||||
347 00000264 0507000000 add eax, 'A'-'9'-1
|
||||
348 putHex_dontadjust:
|
||||
349 00000269 50 push eax
|
||||
350 0000026A E8D4FDFFFF call _putc
|
||||
351 0000026F 81C404000000 add esp, 4
|
||||
352
|
||||
353 putHex_loop_end:
|
||||
354 00000275 59 pop ecx
|
||||
355 00000276 58 pop eax
|
||||
356 00000277 E2C2 loop putHex_loop
|
||||
357
|
||||
358 00000279 61 popa
|
||||
359 0000027A 5D pop ebp
|
||||
360 0000027B C3 ret
|
||||
361
|
||||
362
|
||||
363 ;
|
||||
364 ;int puts(char *str)
|
||||
365 ;
|
||||
366 _puts:
|
||||
367 0000027C 55 push ebp
|
||||
368 0000027D 89E5 mov ebp, esp
|
||||
369 0000027F 56 push esi
|
||||
370 00000280 50 push eax
|
||||
371 00000281 8B7508 mov esi, [ebp+8] ;esi = to string
|
||||
372 puts_loop:
|
||||
373 00000284 AC lodsb
|
||||
374 00000285 3C00 cmp al, 0
|
||||
375 00000287 740E jz puts_done
|
||||
376 00000289 50 push eax
|
||||
377 0000028A E8B4FDFFFF call _putc
|
||||
378 0000028F 81C404000000 add esp, 4
|
||||
379 00000295 EBED jmp puts_loop
|
||||
380
|
||||
381 puts_done:
|
||||
382 00000297 58 pop eax
|
||||
383 00000298 5E pop esi
|
||||
384 00000299 5D pop ebp
|
||||
385 0000029A C3 ret
|
||||
386
|
||||
387
|
||||
388
|
||||
389
|
||||
390
|
||||
391
|
||||
392 _putDecu:
|
||||
393 0000029B 55 push ebp
|
||||
394 0000029C 89E5 mov ebp, esp
|
||||
395 0000029E 81EC18000000 sub esp, 24
|
||||
396 000002A4 C745FC01000000 mov DWORD [ebp-4], 1
|
||||
397 000002AB C645FB00 mov BYTE [ebp-5], 0
|
||||
398 L2:
|
||||
399 000002AF 8B5508 mov edx, DWORD [ebp+8]
|
||||
400 000002B2 B8CDCCCCCC mov eax, -858993459
|
||||
401 000002B7 F7E2 mul edx
|
||||
402 000002B9 89D0 mov eax, edx
|
||||
403 000002BB C1E803 shr eax, 3
|
||||
404 000002BE 3B45FC cmp eax, DWORD [ebp-4]
|
||||
405 000002C1 7305 jae L4
|
||||
406 000002C3 E912000000 jmp L3
|
||||
407 L4:
|
||||
408 000002C8 8B45FC mov eax, DWORD [ebp-4]
|
||||
409 000002CB 89C2 mov edx, eax
|
||||
410 000002CD C1E202 sal edx, 2
|
||||
411 000002D0 01C2 add edx, eax
|
||||
412 000002D2 8D0412 lea eax, [edx+edx]
|
||||
413 000002D5 8945FC mov DWORD [ebp-4], eax
|
||||
414 000002D8 EBD5 jmp L2
|
||||
415 L3:
|
||||
416 000002DA 90 nop
|
||||
417 L5:
|
||||
418 000002DB 817DFC01000000 cmp DWORD [ebp-4], 1
|
||||
419 000002E2 7705 ja L7
|
||||
420 000002E4 E959000000 jmp L6
|
||||
421 L7:
|
||||
422 000002E9 8B5508 mov edx, DWORD [ebp+8]
|
||||
423 000002EC 89D0 mov eax, edx
|
||||
424 000002EE BA00000000 mov edx, 0
|
||||
425 000002F3 F775FC div DWORD [ebp-4]
|
||||
426 000002F6 8945F4 mov DWORD [ebp-12], eax
|
||||
427 000002F9 8A45F4 mov al, BYTE [ebp-12]
|
||||
428 000002FC 8845FB mov BYTE [ebp-5], al
|
||||
429 000002FF B800000000 mov eax, 0
|
||||
430 00000304 8A45FB mov al, BYTE [ebp-5]
|
||||
431 00000307 0FAF45FC imul eax, DWORD [ebp-4]
|
||||
432 0000030B 294508 sub DWORD [ebp+8], eax
|
||||
433 0000030E 8B55FC mov edx, DWORD [ebp-4]
|
||||
434 00000311 B8CDCCCCCC mov eax, -858993459
|
||||
435 00000316 F7E2 mul edx
|
||||
436 00000318 89D0 mov eax, edx
|
||||
437 0000031A C1E803 shr eax, 3
|
||||
438 0000031D 8945FC mov DWORD [ebp-4], eax
|
||||
439 00000320 8D45FB lea eax, [ebp-5]
|
||||
440 00000323 800030 add BYTE [eax], 48
|
||||
441 00000326 81EC0C000000 sub esp, 12
|
||||
442 0000032C B800000000 mov eax, 0
|
||||
443 00000331 8A45FB mov al, BYTE [ebp-5]
|
||||
444 00000334 50 push eax
|
||||
445 00000335 E809FDFFFF call _putc
|
||||
446 0000033A 81C410000000 add esp, 16
|
||||
447 00000340 EB99 jmp L5
|
||||
448 L6:
|
||||
449 00000342 81EC0C000000 sub esp, 12
|
||||
450 00000348 8A4508 mov al, BYTE [ebp+8]
|
||||
451 0000034B 0530000000 add eax, 48
|
||||
452 00000350 25FF000000 and eax, 255
|
||||
453 00000355 50 push eax
|
||||
454 00000356 E8E8FCFFFF call _putc
|
||||
455 0000035B 81C410000000 add esp, 16
|
||||
456 00000361 C9 leave
|
||||
457 00000362 C3 ret
|
||||
458
|
||||
459
|
||||
460
|
||||
461
|
||||
462 _putDec:
|
||||
463 00000363 55 push ebp
|
||||
464 00000364 89E5 mov ebp, esp
|
||||
465 00000366 81EC18000000 sub esp, 24
|
||||
466 0000036C 817D0800000000 cmp DWORD [ebp+8], 0
|
||||
467 00000373 7919 jns L9
|
||||
468 00000375 81EC0C000000 sub esp, 12
|
||||
469 0000037B 682D000000 push 45
|
||||
470 00000380 E8BEFCFFFF call _putc
|
||||
471 00000385 81C410000000 add esp, 16
|
||||
472 0000038B F75D08 neg DWORD [ebp+8]
|
||||
473 L9:
|
||||
474 0000038E C745FC01000000 mov DWORD [ebp-4], 1
|
||||
475 00000395 C645FB00 mov BYTE [ebp-5], 0
|
||||
476 L10:
|
||||
477 00000399 8B4508 mov eax, DWORD [ebp+8]
|
||||
478 0000039C 3B45FC cmp eax, DWORD [ebp-4]
|
||||
479 0000039F 7305 jae L12
|
||||
480 000003A1 E912000000 jmp L11
|
||||
481 L12:
|
||||
482 000003A6 8B45FC mov eax, DWORD [ebp-4]
|
||||
483 000003A9 89C2 mov edx, eax
|
||||
484 000003AB C1E202 sal edx, 2
|
||||
485 000003AE 01C2 add edx, eax
|
||||
486 000003B0 8D0412 lea eax, [edx+edx]
|
||||
487 000003B3 8945FC mov DWORD [ebp-4], eax
|
||||
488 000003B6 EBE1 jmp L10
|
||||
489 L11:
|
||||
490 000003B8 8B55FC mov edx, DWORD [ebp-4]
|
||||
491 000003BB B8CDCCCCCC mov eax, -858993459
|
||||
492 000003C0 F7E2 mul edx
|
||||
493 000003C2 89D0 mov eax, edx
|
||||
494 000003C4 C1E803 shr eax, 3
|
||||
495 000003C7 8945FC mov DWORD [ebp-4], eax
|
||||
496 L13:
|
||||
497 000003CA 817DFC01000000 cmp DWORD [ebp-4], 1
|
||||
498 000003D1 7705 ja L15
|
||||
499 000003D3 E959000000 jmp L14
|
||||
500 L15:
|
||||
501 000003D8 8B5508 mov edx, DWORD [ebp+8]
|
||||
502 000003DB 89D0 mov eax, edx
|
||||
503 000003DD BA00000000 mov edx, 0
|
||||
504 000003E2 F775FC div DWORD [ebp-4]
|
||||
505 000003E5 8945F4 mov DWORD [ebp-12], eax
|
||||
506 000003E8 8A45F4 mov al, BYTE [ebp-12]
|
||||
507 000003EB 8845FB mov BYTE [ebp-5], al
|
||||
508 000003EE B800000000 mov eax, 0
|
||||
509 000003F3 8A45FB mov al, BYTE [ebp-5]
|
||||
510 000003F6 0FAF45FC imul eax, DWORD [ebp-4]
|
||||
511 000003FA 294508 sub DWORD [ebp+8], eax
|
||||
512 000003FD 8B55FC mov edx, DWORD [ebp-4]
|
||||
513 00000400 B8CDCCCCCC mov eax, -858993459
|
||||
514 00000405 F7E2 mul edx
|
||||
515 00000407 89D0 mov eax, edx
|
||||
516 00000409 C1E803 shr eax, 3
|
||||
517 0000040C 8945FC mov DWORD [ebp-4], eax
|
||||
518 0000040F 8D45FB lea eax, [ebp-5]
|
||||
519 00000412 800030 add BYTE [eax], 48
|
||||
520 00000415 81EC0C000000 sub esp, 12
|
||||
521 0000041B B800000000 mov eax, 0
|
||||
522 00000420 8A45FB mov al, BYTE [ebp-5]
|
||||
523 00000423 50 push eax
|
||||
524 00000424 E81AFCFFFF call _putc
|
||||
525 00000429 81C410000000 add esp, 16
|
||||
526 0000042F EB99 jmp L13
|
||||
527 L14:
|
||||
528 00000431 81EC0C000000 sub esp, 12
|
||||
529 00000437 8A4508 mov al, BYTE [ebp+8]
|
||||
530 0000043A 0530000000 add eax, 48
|
||||
531 0000043F 25FF000000 and eax, 255
|
||||
532 00000444 50 push eax
|
||||
533 00000445 E8F9FBFFFF call _putc
|
||||
534 0000044A 81C410000000 add esp, 16
|
||||
535 00000450 C9 leave
|
||||
536 00000451 C3 ret
|
||||
537
|
||||
538
|
||||
539
|
||||
540
|
||||
Reference in new issue
Block a user