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750 | victor | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
488 | spraid | 8 | ;============================================================================ |
9 | ; |
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530 | mikedld | 10 | ; External kernel dependencies (libraries) loading |
488 | spraid | 11 | ; |
12 | ;============================================================================ |
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593 | mikedld | 13 | |
14 | $Revision: 1289 $ |
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15 | |||
1289 | diamond | 16 | if 0 |
17 | ; The code currently does not work. Kill "if 0/end if" only after correcting |
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18 | ; to current kernel (dll.inc). |
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488 | spraid | 19 | macro library [name,fname] |
20 | { |
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21 | forward |
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22 | dd __#name#_library_table__,__#name#_library_name__ |
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23 | common |
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24 | dd 0 |
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25 | forward |
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26 | __#name#_library_name__ db fname,0 |
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27 | } |
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28 | |||
29 | macro import lname,[name,sname] |
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30 | { |
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31 | common |
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32 | align 4 |
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33 | __#lname#_library_table__: |
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34 | forward |
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35 | name dd __#name#_import_name__ |
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36 | common |
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37 | dd 0 |
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38 | forward |
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39 | __#name#_import_name__ db sname,0 |
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40 | } |
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41 | |||
42 | macro export [name,sname] |
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43 | { |
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521 | diamond | 44 | align 4 |
488 | spraid | 45 | forward |
46 | dd __#name#_export_name__,name |
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47 | common |
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48 | dd 0 |
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49 | forward |
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50 | __#name#_export_name__ db sname,0 |
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51 | } |
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52 | |||
53 | |||
54 | |||
535 | spraid | 55 | align 4 ; loading library (use kernel functions) |
488 | spraid | 56 | proc load_k_library stdcall, file_name:dword |
57 | locals |
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58 | coff dd ? |
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59 | sym dd ? |
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60 | strings dd ? |
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61 | img_size dd ? |
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62 | img_base dd ? |
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63 | exports dd ? |
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64 | endl |
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519 | serge | 65 | |
488 | spraid | 66 | cli |
519 | serge | 67 | |
488 | spraid | 68 | stdcall load_file, [file_name] |
69 | test eax, eax |
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70 | jz .fail |
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71 | |||
72 | mov [coff], eax |
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73 | movzx ecx, [eax+CFH.nSections] |
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74 | xor ebx, ebx |
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75 | |||
76 | lea edx, [eax+20] |
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77 | @@: |
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78 | add ebx, [edx+CFS.SizeOfRawData] |
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79 | add ebx, 15 |
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80 | and ebx, not 15 |
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81 | add edx, COFF_SECTION_SIZE |
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82 | dec ecx |
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83 | jnz @B |
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84 | mov [img_size], ebx |
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85 | |||
86 | stdcall kernel_alloc, [img_size] |
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87 | |||
88 | test eax, eax |
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89 | jz .fail |
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90 | mov [img_base], eax |
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91 | |||
92 | mov edx, [coff] |
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93 | movzx ebx, [edx+CFH.nSections] |
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94 | mov edi, [img_base] |
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95 | lea eax, [edx+20] |
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96 | @@: |
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97 | mov [eax+CFS.VirtualAddress], edi |
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98 | mov esi, [eax+CFS.PtrRawData] |
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99 | test esi, esi |
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100 | jnz .copy |
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101 | add edi, [eax+CFS.SizeOfRawData] |
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102 | jmp .next |
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103 | .copy: |
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104 | add esi, edx |
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105 | mov ecx, [eax+CFS.SizeOfRawData] |
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106 | cld |
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107 | rep movsb |
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108 | .next: |
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109 | add edi, 15 |
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110 | and edi, not 15 |
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111 | add eax, COFF_SECTION_SIZE |
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112 | dec ebx |
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113 | jnz @B |
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114 | |||
115 | mov ebx, [edx+CFH.pSymTable] |
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116 | add ebx, edx |
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117 | mov [sym], ebx |
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118 | mov ecx, [edx+CFH.nSymbols] |
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119 | add ecx,ecx |
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120 | lea ecx,[ecx+ecx*8] ;ecx*=18 = nSymbols*CSYM_SIZE |
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121 | add ecx, [sym] |
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122 | mov [strings], ecx |
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123 | |||
124 | lea eax, [edx+20] |
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519 | serge | 125 | |
488 | spraid | 126 | stdcall fix_coff_symbols, eax, [sym], [edx+CFH.nSymbols],\ |
127 | [strings], dword 0 |
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128 | test eax, eax |
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129 | jnz @F |
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130 | |||
131 | @@: |
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132 | mov edx, [coff] |
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133 | movzx ebx, [edx+CFH.nSections] |
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134 | mov edi, 0 |
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135 | lea eax, [edx+20] |
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136 | @@: |
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137 | add [eax+CFS.VirtualAddress], edi ;patch user space offset |
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138 | add eax, COFF_SECTION_SIZE |
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139 | dec ebx |
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140 | jnz @B |
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141 | |||
142 | add edx, 20 |
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143 | stdcall fix_coff_relocs, [coff], edx, [sym] |
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144 | |||
145 | mov ebx, [coff] |
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146 | stdcall get_coff_sym,[sym],[ebx+CFH.nSymbols],szEXPORTS |
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147 | mov [exports], eax |
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148 | |||
149 | stdcall kernel_free, [coff] |
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150 | |||
151 | mov eax, [exports] |
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152 | ret |
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153 | .fail: |
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154 | xor eax, eax |
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155 | ret |
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156 | endp |
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157 | |||
158 | |||
159 | proc dll.Load, import_table:dword |
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160 | mov esi,[import_table] |
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161 | .next_lib: mov edx,[esi] |
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162 | or edx,edx |
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163 | jz .exit |
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164 | push esi |
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165 | |||
166 | mov edi,s_libname |
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519 | serge | 167 | |
521 | diamond | 168 | mov al, '/' |
169 | stosb |
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170 | mov esi,sysdir_path |
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488 | spraid | 171 | @@: lodsb |
172 | stosb |
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173 | or al,al |
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174 | jnz @b |
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175 | dec edi |
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176 | mov [edi], dword '/lib' |
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177 | mov [edi+4],byte '/' |
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178 | add edi,5 |
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179 | pop esi |
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180 | push esi |
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181 | mov esi,[esi+4] |
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182 | @@: lodsb |
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183 | stosb |
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184 | or al,al |
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185 | jnz @b |
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186 | |||
187 | pushad |
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188 | stdcall load_k_library,s_libname |
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189 | mov [esp+28],eax |
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190 | popad |
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191 | or eax,eax |
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192 | jz .fail |
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193 | stdcall dll.Link,eax,edx |
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194 | stdcall dll.Init,[eax+4] |
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195 | pop esi |
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196 | add esi,8 |
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197 | jmp .next_lib |
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198 | .exit: xor eax,eax |
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199 | ret |
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200 | .fail: add esp,4 |
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201 | xor eax,eax |
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202 | inc eax |
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203 | ret |
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204 | endp |
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205 | |||
206 | proc dll.Link, exp:dword,imp:dword |
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207 | push eax |
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208 | mov esi,[imp] |
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209 | test esi,esi |
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210 | jz .done |
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211 | .next: lodsd |
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212 | test eax,eax |
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213 | jz .done |
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214 | stdcall dll.GetProcAddress,[exp],eax |
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215 | or eax,eax |
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216 | jz @f |
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217 | mov [esi-4],eax |
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218 | jmp .next |
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219 | @@: mov dword[esp],0 |
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220 | .done: pop eax |
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221 | ret |
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222 | endp |
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223 | |||
224 | proc dll.Init, dllentry:dword |
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225 | pushad |
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226 | mov eax,mem.Alloc |
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227 | mov ebx,mem.Free |
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228 | mov ecx,mem.ReAlloc |
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229 | mov edx,dll.Load |
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230 | stdcall [dllentry] |
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231 | popad |
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232 | ret |
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233 | endp |
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234 | |||
235 | proc dll.GetProcAddress, exp:dword,sz_name:dword |
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236 | mov edx,[exp] |
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237 | .next: test edx,edx |
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238 | jz .end |
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519 | serge | 239 | stdcall strncmp,[edx],[sz_name], dword -1 |
488 | spraid | 240 | test eax,eax |
241 | jz .ok |
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242 | add edx,8 |
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243 | jmp .next |
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244 | .ok: mov eax,[edx+4] |
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245 | .end: ret |
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246 | endp |
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247 | |||
248 | ;----------------------------------------------------------------------------- |
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249 | proc mem.Alloc size ;///////////////////////////////////////////////////////// |
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250 | ;----------------------------------------------------------------------------- |
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251 | push ebx ecx |
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252 | ; mov eax,[size] |
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253 | ; lea ecx,[eax+4+4095] |
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254 | ; and ecx,not 4095 |
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255 | ; stdcall kernel_alloc, ecx |
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256 | ; add ecx,-4 |
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257 | ; mov [eax],ecx |
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258 | ; add eax,4 |
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259 | |||
260 | stdcall kernel_alloc, [size] |
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261 | |||
262 | pop ecx ebx |
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263 | ret |
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264 | endp |
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265 | |||
266 | ;----------------------------------------------------------------------------- |
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267 | proc mem.ReAlloc mptr,size;/////////////////////////////////////////////////// |
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268 | ;----------------------------------------------------------------------------- |
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269 | push ebx ecx esi edi eax |
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270 | mov eax,[mptr] |
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271 | mov ebx,[size] |
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272 | or eax,eax |
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273 | jz @f |
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274 | lea ecx,[ebx+4+4095] |
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275 | and ecx,not 4095 |
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276 | add ecx,-4 |
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277 | cmp ecx,[eax-4] |
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278 | je .exit |
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279 | @@: mov eax,ebx |
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280 | call mem.Alloc |
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281 | xchg eax,[esp] |
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282 | or eax,eax |
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283 | jz .exit |
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284 | mov esi,eax |
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285 | xchg eax,[esp] |
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286 | mov edi,eax |
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287 | mov ecx,[esi-4] |
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288 | cmp ecx,[edi-4] |
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289 | jbe @f |
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290 | mov ecx,[edi-4] |
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291 | @@: add ecx,3 |
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292 | shr ecx,2 |
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293 | cld |
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294 | rep movsd |
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295 | xchg eax,[esp] |
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296 | call mem.Free |
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297 | .exit: |
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298 | pop eax edi esi ecx ebx |
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299 | ret |
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300 | endp |
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301 | |||
302 | ;----------------------------------------------------------------------------- |
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303 | proc mem.Free mptr ;////////////////////////////////////////////////////////// |
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304 | ;----------------------------------------------------------------------------- |
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305 | ; mov eax,[mptr] |
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306 | ; or eax,eax |
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307 | ; jz @f |
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308 | ; push ebx ecx |
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309 | ; lea ecx,[eax-4] |
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310 | ; stdcall kernel_free, ecx |
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311 | ; pop ecx ebx |
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312 | ; @@: ret |
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313 | stdcall kernel_free, [mptr] |
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314 | ret |
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315 | endp |
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316 | |||
521 | diamond | 317 | uglobal |
488 | spraid | 318 | s_libname db 64 dup (0) |
521 | diamond | 319 | endg |
1289 | diamond | 320 | end if |