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Rev | Author | Line No. | Line |
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593 | mikedld | 1 | |
465 | serge | 2 | |
3 | |||
593 | mikedld | 4 | |
465 | serge | 5 | MEM_WC equ 1 ;write combined memory |
6 | MEM_UC equ 0 ;uncached memory |
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7 | |||
8 | |||
9 | proc mem_test |
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10 | |||
11 | |||
12 | and eax, not (CR0_CD+CR0_NW) |
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13 | or eax, CR0_CD ;disable caching |
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14 | mov cr0, eax |
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15 | wbinvd ;invalidate cache |
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16 | |||
17 | |||
18 | mov ebx, 'TEST' |
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19 | @@: |
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20 | add edi, 0x100000 |
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21 | xchg ebx, dword [edi] |
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22 | cmp dword [edi], 'TEST' |
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23 | xchg ebx, dword [edi] |
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24 | je @b |
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25 | mov [MEM_AMOUNT-OS_BASE], edi |
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26 | |||
27 | |||
28 | mov cr0, eax |
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29 | mov eax, edi |
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30 | ret |
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31 | endp |
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32 | |||
33 | |||
34 | proc init_mem |
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35 | mov eax, [MEM_AMOUNT-OS_BASE] |
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36 | mov [pg_data.mem_amount-OS_BASE], eax |
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37 | |||
38 | |||
39 | mov edx, eax |
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40 | mov [pg_data.pages_count-OS_BASE], eax |
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41 | shr eax, 3 |
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42 | mov [pg_data.pagemap_size-OS_BASE], eax |
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43 | |||
44 | |||
513 | serge | 45 | and eax, not 4095 |
46 | mov [tmp_page_tabs], eax |
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47 | |||
48 | |||
465 | serge | 49 | jbe @F |
50 | mov edx, (OS_BASE/4096) |
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51 | jmp .set |
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52 | @@: |
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53 | cmp edx, (HEAP_MIN_SIZE/4096) |
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54 | jae .set |
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55 | mov edx, (HEAP_MIN_SIZE/4096) |
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56 | .set: |
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57 | mov [pg_data.kernel_pages-OS_BASE], edx |
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58 | shr edx, 10 |
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59 | mov [pg_data.kernel_tables-OS_BASE], edx |
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60 | |||
61 | |||
62 | mov edi, sys_pgdir-OS_BASE |
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63 | mov ecx, 4096/4 |
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64 | cld |
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65 | rep stosd |
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66 | |||
67 | |||
68 | bt [cpu_caps-OS_BASE], CAPS_PSE |
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69 | jnc .no_PSE |
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70 | |||
71 | |||
72 | or ebx, CR4_PSE |
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73 | mov eax, PG_LARGE+PG_SW |
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74 | mov cr4, ebx |
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75 | dec [pg_data.kernel_tables-OS_BASE] |
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513 | serge | 76 | |
465 | serge | 77 | |
78 | add eax, 0x00400000 |
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79 | add edx, 4 |
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80 | |||
81 | |||
82 | mov ecx, [tmp_page_tabs] |
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513 | serge | 83 | sub ecx, 0x400000 |
84 | shr ecx, 12 ;ecx/=4096 |
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85 | jmp .map_low |
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465 | serge | 86 | .no_PSE: |
87 | mov eax, PG_SW |
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88 | mov ecx, [tmp_page_tabs] |
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513 | serge | 89 | shr ecx, 12 |
90 | .map_low: |
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465 | serge | 91 | mov edi, [tmp_page_tabs] |
513 | serge | 92 | @@: ; |
465 | serge | 93 | stosd |
94 | add eax, 0x1000 |
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95 | dec ecx |
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96 | jnz @B |
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97 | |||
98 | |||
99 | shl ecx, 10 |
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100 | xor eax, eax |
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101 | rep stosd |
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102 | |||
103 | |||
104 | mov eax, [tmp_page_tabs] |
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513 | serge | 105 | or eax, PG_SW |
106 | mov edi, edx |
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465 | serge | 107 | |
108 | |||
109 | |||
110 | |||
111 | add eax, 0x1000 |
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112 | dec ecx |
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113 | jnz .map_kernel_tabs |
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114 | |||
115 | |||
116 | |||
117 | |||
118 | lea esi, [edi+(OS_BASE shr 20)] |
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119 | movsd |
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519 | serge | 120 | movsd |
121 | ret |
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465 | serge | 122 | endp |
123 | |||
124 | |||
125 | proc init_page_map |
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126 | |||
127 | |||
128 | mov ecx, [pg_data.pagemap_size-OS_BASE] |
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129 | shr ecx, 2 |
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130 | or eax, -1 |
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513 | serge | 131 | cld |
132 | rep stosd |
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465 | serge | 133 | |
134 | |||
513 | serge | 135 | mov edx, [pg_data.pages_count-OS_BASE] |
465 | serge | 136 | shr ecx, 12 |
513 | serge | 137 | add ecx, [pg_data.kernel_tables-OS_BASE] |
138 | sub edx, ecx |
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465 | serge | 139 | mov [pg_data.pages_free-OS_BASE], edx |
140 | |||
141 | |||
513 | serge | 142 | mov ebx, ecx |
465 | serge | 143 | shr ecx, 5 |
144 | xor eax, eax |
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513 | serge | 145 | rep stosd |
465 | serge | 146 | |
147 | |||
148 | mov ecx, ebx |
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149 | and ecx, 31 |
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150 | shl eax, cl |
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151 | mov [edi], eax |
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152 | add edi, OS_BASE |
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153 | mov [page_start-OS_BASE], edi; |
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154 | |||
155 | |||
156 | add ebx, [pg_data.pagemap_size-OS_BASE] |
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157 | mov [page_end-OS_BASE], ebx |
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158 | |||
159 | |||
160 | ret |
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161 | endp |
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162 | |||
163 | |||
164 | |||
586 | serge | 165 | |
166 | mov edi, 0xE0000 |
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167 | .pcibios_nxt: |
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168 | cmp dword[edi], '_32_' ; "magic" word |
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169 | je .BIOS32_found |
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170 | .pcibios_nxt2: |
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171 | add edi, 0x10 |
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172 | cmp edi, 0xFFFF0 |
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173 | je .BIOS32_not_found |
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174 | jmp .pcibios_nxt |
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175 | .BIOS32_found: ; magic word found, check control summ |
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176 | |||
177 | |||
178 | shl ecx, 4 |
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179 | mov esi, edi |
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180 | xor eax, eax |
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181 | cld ; paranoia |
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182 | @@: lodsb |
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183 | add ah, al |
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184 | loop @b |
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185 | jnz .pcibios_nxt2 ; control summ must be zero |
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186 | ; BIOS32 service found ! |
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187 | mov ebp, [edi + 4] |
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188 | mov [bios32_entry], ebp |
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189 | ; check PCI BIOS present |
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190 | mov eax, '$PCI' |
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191 | xor ebx, ebx |
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192 | push cs ; special for 'ret far' from BIOS |
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193 | call ebp |
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194 | test al, al |
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195 | jnz .PCI_BIOS32_not_found |
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196 | |||
197 | |||
198 | |||
199 | |||
200 | dec ecx |
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201 | mov [(pci_code_32-OS_BASE)], cx ;limit 0-15 |
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202 | mov [(pci_data_32-OS_BASE)], cx ;limit 0-15 |
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203 | |||
204 | |||
205 | mov [(pci_data_32-OS_BASE)+2], bx ;base 0-15 |
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206 | |||
207 | |||
208 | mov [(pci_code_32-OS_BASE)+4], bl ;base 16-23 |
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209 | mov [(pci_data_32-OS_BASE)+4], bl ;base 16-23 |
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210 | |||
211 | |||
212 | and cl, 0x0F |
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213 | mov ch, bh |
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214 | add cx, D32 |
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215 | mov [(pci_code_32-OS_BASE)+6], cx ;lim 16-19 & |
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216 | mov [(pci_data_32-OS_BASE)+6], cx ;base 24-31 |
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217 | |||
218 | |||
219 | ; jmp .end |
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220 | .PCI_BIOS32_not_found: |
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221 | ; здесь должна заполнятся pci_emu_dat |
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222 | .BIOS32_not_found: |
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223 | .end: |
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224 | |||
225 | |||
226 | |||
227 | proc test_cpu |
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465 | serge | 228 | locals |
229 | cpu_type dd ? |
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230 | cpu_id dd ? |
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231 | cpu_Intel dd ? |
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232 | cpu_AMD dd ? |
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233 | endl |
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234 | |||
235 | |||
236 | xor eax, eax |
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237 | mov [cpu_caps-OS_BASE], eax |
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238 | mov [cpu_caps+4-OS_BASE], eax |
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239 | |||
240 | |||
241 | pop eax |
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242 | mov ecx, eax |
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243 | xor eax, 0x40000 |
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244 | push eax |
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245 | popfd |
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246 | pushfd |
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247 | pop eax |
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248 | xor eax, ecx |
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249 | mov [cpu_type], CPU_386 |
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250 | jz .end_cpuid |
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251 | push ecx |
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252 | popfd |
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253 | |||
254 | |||
255 | mov eax, ecx |
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256 | xor eax, 0x200000 |
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257 | push eax |
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258 | popfd |
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259 | pushfd |
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260 | pop eax |
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261 | xor eax, ecx |
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262 | je .end_cpuid |
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263 | mov [cpu_id], 1 |
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264 | |||
265 | |||
266 | cpuid |
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267 | |||
268 | |||
269 | mov [cpu_vendor+4-OS_BASE], edx |
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270 | mov [cpu_vendor+8-OS_BASE], ecx |
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271 | cmp ebx, dword [intel_str-OS_BASE] |
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272 | jne .check_AMD |
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273 | cmp edx, dword [intel_str+4-OS_BASE] |
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274 | jne .check_AMD |
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275 | cmp ecx, dword [intel_str+8-OS_BASE] |
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276 | jne .check_AMD |
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277 | mov [cpu_Intel], 1 |
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278 | cmp eax, 1 |
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279 | jl .end_cpuid |
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280 | mov eax, 1 |
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281 | cpuid |
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282 | mov [cpu_sign-OS_BASE], eax |
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283 | mov [cpu_info-OS_BASE], ebx |
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284 | mov [cpu_caps-OS_BASE], edx |
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285 | mov [cpu_caps+4-OS_BASE],ecx |
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286 | |||
287 | |||
288 | and eax, 0x0f |
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289 | ret |
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290 | .end_cpuid: |
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291 | mov eax, [cpu_type] |
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292 | ret |
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293 | |||
294 | |||
295 | cmp ebx, dword [AMD_str-OS_BASE] |
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296 | jne .unknown |
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297 | cmp edx, dword [AMD_str+4-OS_BASE] |
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298 | jne .unknown |
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299 | cmp ecx, dword [AMD_str+8-OS_BASE] |
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300 | jne .unknown |
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301 | mov [cpu_AMD], 1 |
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302 | cmp eax, 1 |
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303 | jl .unknown |
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304 | mov eax, 1 |
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305 | cpuid |
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306 | mov [cpu_sign-OS_BASE], eax |
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307 | mov [cpu_info-OS_BASE], ebx |
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308 | mov [cpu_caps-OS_BASE], edx |
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309 | mov [cpu_caps+4-OS_BASE],ecx |
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310 | shr eax, 8 |
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311 | and eax, 0x0f |
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312 | ret |
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313 | .unknown: |
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314 | mov eax, 1 |
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315 | cpuid |
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316 | mov [cpu_sign-OS_BASE], eax |
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317 | mov [cpu_info-OS_BASE], ebx |
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318 | mov [cpu_caps-OS_BASE], edx |
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319 | mov [cpu_caps+4-OS_BASE],ecx |
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320 | shr eax, 8 |
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321 | and eax, 0x0f |
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322 | ret |
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323 | endp |
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324 |