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Rev | Author | Line No. | Line |
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388 | serge | 1 | |
2 | MEM_WC equ 1 ;write combined memory |
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3 | MEM_UC equ 0 ;uncached memory |
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4 | |||
5 | |||
6 | proc mem_test |
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7 | |||
8 | |||
9 | and eax, not (CR0_CD+CR0_NW) |
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10 | or eax, CR0_CD ;disable caching |
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11 | mov cr0, eax |
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12 | wbinvd ;invalidate cache |
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13 | |||
14 | |||
15 | mov ebx, 'TEST' |
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16 | @@: |
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17 | add edi, 0x100000 |
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430 | serge | 18 | xchg ebx, dword [edi] |
388 | serge | 19 | cmp dword [edi], 'TEST' |
20 | xchg ebx, dword [edi] |
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21 | je @b |
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22 | mov [MEM_AMOUNT-OS_BASE], edi |
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23 | |||
24 | |||
25 | mov cr0, eax |
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26 | mov eax, edi |
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27 | ret |
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28 | endp |
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29 | |||
30 | |||
31 | proc init_mem |
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32 | mov eax, [MEM_AMOUNT-OS_BASE] |
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33 | mov [pg_data.mem_amount-OS_BASE], eax |
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34 | |||
35 | |||
36 | mov edx, eax |
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37 | mov [pg_data.pages_count-OS_BASE], eax |
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38 | shr eax, 3 |
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39 | mov [pg_data.pagemap_size-OS_BASE], eax |
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40 | |||
41 | |||
430 | serge | 42 | jbe @F |
43 | mov edx, (OS_BASE/4096) |
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44 | jmp .set |
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45 | @@: |
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46 | cmp edx, (HEAP_MIN_SIZE/4096) |
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47 | jae .set |
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48 | mov edx, (HEAP_MIN_SIZE/4096) |
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49 | .set: |
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50 | mov [pg_data.kernel_pages-OS_BASE], edx |
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51 | shr edx, 10 |
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388 | serge | 52 | mov [pg_data.kernel_tables-OS_BASE], edx |
53 | |||
54 | |||
55 | mov edi, sys_pgdir-OS_BASE |
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56 | mov ecx, 4096/4 |
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400 | serge | 57 | cld |
388 | serge | 58 | rep stosd |
59 | |||
60 | |||
400 | serge | 61 | bt [cpu_caps-OS_BASE], CAPS_PSE |
62 | jnc .no_PSE |
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63 | |||
388 | serge | 64 | |
65 | or ebx, CR4_PSE |
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66 | mov eax, PG_LARGE+PG_SW |
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67 | |||
400 | serge | 68 | |
388 | serge | 69 | jnc @F |
70 | |||
400 | serge | 71 | |
388 | serge | 72 | or ebx, CR4_PGE |
73 | @@: |
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74 | mov cr4, ebx |
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75 | sub [pg_data.kernel_tables-OS_BASE], 1 |
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430 | serge | 76 | |
388 | serge | 77 | |
78 | add eax, 0x00400000 |
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79 | ; mov [edx+4], eax |
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430 | serge | 80 | add edx, 4 |
81 | |||
388 | serge | 82 | |
430 | serge | 83 | mov ecx, (tmp_page_tab-0x400000)/4096 |
84 | jmp .map_low |
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400 | serge | 85 | .no_PSE: |
86 | mov eax, PG_SW |
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87 | mov ecx, tmp_page_tab/4096 |
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88 | .map_low: |
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89 | mov edi, tmp_page_tab |
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388 | serge | 90 | @@: ; |
400 | serge | 91 | stosd |
92 | add eax, 0x1000 |
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93 | dec ecx |
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94 | jnz @B |
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95 | |||
388 | serge | 96 | |
97 | shl ecx, 10 |
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98 | xor eax, eax |
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99 | rep stosd |
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100 | |||
101 | |||
102 | mov eax, tmp_page_tab+PG_SW |
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103 | mov edi, edx |
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104 | |||
105 | |||
106 | |||
107 | |||
108 | add eax, 0x1000 |
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109 | dec ecx |
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110 | jnz .map_kernel_tabs |
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111 | |||
112 | |||
113 | |||
400 | serge | 114 | |
115 | lea esi, [edi+(OS_BASE shr 20)] |
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116 | lodsd |
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441 | serge | 117 | and eax, not PG_GLOBAL |
118 | stosd |
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119 | lodsd |
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120 | and eax, not PG_GLOBAL |
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121 | stosd |
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122 | lodsd |
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123 | and eax, not PG_GLOBAL |
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124 | stosd |
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125 | ret |
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388 | serge | 126 | endp |
127 | |||
128 | |||
129 | proc init_page_map |
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130 | |||
131 | |||
132 | mov ecx, ((HEAP_BASE-OS_BASE)/4096)/32 ;384/4 |
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394 | serge | 133 | mov ebx, ecx |
388 | serge | 134 | xor eax,eax |
135 | cld |
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136 | rep stosd |
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137 | |||
138 | |||
139 | mov ecx, [pg_data.pagemap_size-OS_BASE] |
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140 | sub ecx, ebx |
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141 | shr ecx, 2 |
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142 | rep stosd |
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143 | |||
144 | |||
145 | mov edx, [pg_data.pages_count-OS_BASE] |
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146 | mov ecx, [pg_data.kernel_tables-OS_BASE] |
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147 | add ecx, ((HEAP_BASE-OS_BASE)/4096) and 31 |
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394 | serge | 148 | sub edx, (HEAP_BASE-OS_BASE)/4096 |
149 | sub edx, ecx |
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388 | serge | 150 | mov [pg_data.pages_free-OS_BASE], edx |
151 | |||
152 | |||
153 | mov ebx, ecx |
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154 | shr ecx, 5 |
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155 | rep stosd |
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156 | |||
157 | |||
158 | mov ecx, ebx |
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159 | and ecx, 31 |
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160 | shl eax, cl |
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161 | mov [edi], eax |
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397 | serge | 162 | add edi, OS_BASE |
388 | serge | 163 | mov [page_start-OS_BASE], edi; |
400 | serge | 164 | |
388 | serge | 165 | |
166 | add ebx, [pg_data.pagemap_size-OS_BASE] |
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167 | mov [page_end-OS_BASE], ebx |
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168 | |||
169 | |||
170 | |||
171 | |||
172 | endp |
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173 | |||
174 | |||
175 | proc test_cpu |
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176 | locals |
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177 | cpu_type dd ? |
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178 | cpu_id dd ? |
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179 | cpu_Intel dd ? |
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180 | cpu_AMD dd ? |
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181 | endl |
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182 | |||
183 | |||
184 | xor eax, eax |
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185 | mov [cpu_caps-OS_BASE], eax |
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186 | mov [cpu_caps+4-OS_BASE], eax |
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187 | |||
188 | |||
189 | pop eax |
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190 | mov ecx, eax |
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191 | xor eax, 0x40000 |
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192 | push eax |
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193 | popfd |
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194 | pushfd |
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195 | pop eax |
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196 | xor eax, ecx |
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197 | mov [cpu_type], CPU_386 |
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198 | jz .end_cpuid |
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199 | push ecx |
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200 | popfd |
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201 | |||
202 | |||
203 | mov eax, ecx |
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204 | xor eax, 0x200000 |
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205 | push eax |
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206 | popfd |
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207 | pushfd |
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208 | pop eax |
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209 | xor eax, ecx |
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210 | je .end_cpuid |
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211 | mov [cpu_id], 1 |
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212 | |||
213 | |||
214 | cpuid |
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215 | |||
216 | |||
217 | mov [cpu_vendor+4-OS_BASE], edx |
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218 | mov [cpu_vendor+8-OS_BASE], ecx |
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219 | cmp ebx, dword [intel_str-OS_BASE] |
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220 | jne .check_AMD |
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221 | cmp edx, dword [intel_str+4-OS_BASE] |
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222 | jne .check_AMD |
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223 | cmp ecx, dword [intel_str+8-OS_BASE] |
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224 | jne .check_AMD |
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225 | mov [cpu_Intel], 1 |
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226 | cmp eax, 1 |
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227 | jl .end_cpuid |
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228 | mov eax, 1 |
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229 | cpuid |
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230 | mov [cpu_sign-OS_BASE], eax |
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231 | mov [cpu_info-OS_BASE], ebx |
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232 | mov [cpu_caps-OS_BASE], edx |
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233 | mov [cpu_caps+4-OS_BASE],ecx |
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234 | |||
235 | |||
236 | and eax, 0x0f |
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237 | ret |
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238 | .end_cpuid: |
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239 | mov eax, [cpu_type] |
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240 | ret |
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241 | |||
242 | |||
243 | cmp ebx, dword [AMD_str-OS_BASE] |
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244 | jne .unknown |
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245 | cmp edx, dword [AMD_str+4-OS_BASE] |
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246 | jne .unknown |
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247 | cmp ecx, dword [AMD_str+8-OS_BASE] |
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248 | jne .unknown |
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249 | mov [cpu_AMD], 1 |
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250 | cmp eax, 1 |
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251 | jl .unknown |
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252 | mov eax, 1 |
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253 | cpuid |
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254 | mov [cpu_sign-OS_BASE], eax |
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255 | mov [cpu_info-OS_BASE], ebx |
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256 | mov [cpu_caps-OS_BASE], edx |
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257 | mov [cpu_caps+4-OS_BASE],ecx |
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258 | shr eax, 8 |
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259 | and eax, 0x0f |
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260 | ret |
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261 | .unknown: |
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262 | mov eax, 1 |
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263 | cpuid |
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264 | mov [cpu_sign-OS_BASE], eax |
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265 | mov [cpu_info-OS_BASE], ebx |
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266 | mov [cpu_caps-OS_BASE], edx |
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267 | mov [cpu_caps+4-OS_BASE],ecx |
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268 | shr eax, 8 |
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269 | and eax, 0x0f |
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270 | ret |
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271 | endp |
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272 |