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