Rev 237 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
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164 | serge | 1 | |
212 | serge | 2 | |
164 | serge | 3 | |
4 | proc mem_test |
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5 | |||
214 | serge | 6 | |
164 | serge | 7 | and eax, not (CR0_CD+CR0_NW) |
212 | serge | 8 | or eax, CR0_CD ;disable caching |
214 | serge | 9 | mov cr0, eax |
164 | serge | 10 | wbinvd ;invalidate cache |
214 | serge | 11 | |
164 | serge | 12 | |
214 | serge | 13 | mov ebx, 'TEST' |
164 | serge | 14 | @@: |
15 | add edi, 0x400000 |
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16 | xchg ebx, dword [edi] |
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17 | cmp dword [edi], 'TEST' |
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18 | xchg ebx, dword [edi] |
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19 | je @b |
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20 | |||
21 | |||
212 | serge | 22 | mov cr0, eax |
164 | serge | 23 | mov eax, edi |
24 | mov [LFBSize], 0x00800000 |
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214 | serge | 25 | ret |
164 | serge | 26 | endp |
27 | |||
28 | |||
29 | proc init_memEx |
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30 | xor eax, eax |
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31 | mov edi, sys_pgdir |
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32 | mov ecx, 2048 |
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33 | rep stosd |
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34 | |||
35 | |||
36 | jnc .no_PSE |
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37 | |||
38 | |||
39 | or ebx, CR4_PSE |
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40 | mov eax, PG_LARGE+PG_SW |
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41 | bt [cpu_caps], CAPS_PGE |
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42 | jnc @F |
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43 | or eax, PG_GLOBAL |
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44 | or ebx, CR4_PGE |
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45 | @@: |
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46 | mov cr4, ebx |
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168 | serge | 47 | |
48 | |||
164 | serge | 49 | add eax, 0x00400000 |
50 | mov dword [sys_pgdir+4], eax |
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51 | add eax, 0x00400000 |
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52 | mov dword [sys_pgdir+8], eax |
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53 | |||
54 | |||
188 | serge | 55 | |
164 | serge | 56 | |
57 | sub ecx, 3 ;4 |
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212 | serge | 58 | mov eax, tmp_page_tab+PG_SW |
164 | serge | 59 | mov edi, sys_pgdir+12 ;16 |
212 | serge | 60 | |
164 | serge | 61 | |
62 | .no_PSE: |
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63 | mov eax, PG_SW |
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64 | mov esi, tmp_page_tab |
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65 | mov ecx, 3072/4; 4096/4 ;0x0 - 0x00FFFFFF |
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212 | serge | 66 | .map_low: |
164 | serge | 67 | mov [esi], eax |
68 | add eax, 0x1000 |
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69 | mov [esi+4], eax |
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70 | add eax, 0x1000 |
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71 | mov [esi+8], eax |
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72 | add eax, 0x1000 |
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73 | mov [esi+12], eax |
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74 | add eax, 0x1000 |
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75 | add esi, 16 |
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76 | dec ecx |
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77 | jnz .map_low ;ядро |
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78 | |||
79 | |||
80 | mov eax, tmp_page_tab+PG_SW |
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81 | mov edi, sys_pgdir |
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82 | |||
83 | |||
84 | |||
85 | |||
86 | add eax, 0x1000 |
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87 | add edi, 4 |
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88 | dec ecx |
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89 | jnz .map_kernel_tabs |
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90 | |||
91 | |||
92 | bt [cpu_caps], CAPS_PSE |
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93 | jc @F |
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94 | add edi, 3072*4 ;4096*4 ;skip low kernel memory |
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212 | serge | 95 | @@: |
164 | serge | 96 | mov ecx, [pg_data.kernel_tables] |
97 | sub ecx, 3 |
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212 | serge | 98 | shl ecx, 10 |
164 | serge | 99 | xor eax, eax |
100 | cld |
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101 | rep stosd |
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102 | |||
103 | |||
188 | serge | 104 | |
105 | |||
164 | serge | 106 | endp |
107 | |||
108 | |||
109 | proc init_page_map |
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110 | mov edi, sys_pgmap |
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111 | mov ecx, 384/4 |
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212 | serge | 112 | xor eax,eax |
164 | serge | 113 | cld |
114 | rep stosd |
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115 | |||
116 | |||
117 | mov ecx, [pg_data.pagemap_size] |
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118 | sub ecx, 384 |
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212 | serge | 119 | shr ecx, 2 |
164 | serge | 120 | rep stosd |
121 | |||
122 | |||
212 | serge | 123 | mov edx, [pg_data.pages_count] |
164 | serge | 124 | mov ecx, [pg_data.kernel_tables] |
125 | bt [cpu_caps], CAPS_PSE |
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126 | jnc @f |
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127 | sub ecx, 3 |
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212 | serge | 128 | @@: |
164 | serge | 129 | sub edx, 3072 |
212 | serge | 130 | sub edx, ecx |
164 | serge | 131 | mov [pg_data.pages_free], edx |
132 | |||
133 | |||
134 | mov ebx, ecx |
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135 | shr ecx, 5 |
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136 | rep stosd |
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137 | |||
138 | |||
139 | mov ecx, ebx |
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140 | and ecx, 31 |
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141 | shl eax, cl |
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142 | stosd |
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143 | |||
144 | |||
212 | serge | 145 | mov ebx, sys_pgmap |
164 | serge | 146 | add ebx, [pg_data.pagemap_size] |
147 | mov [page_end], ebx |
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148 | |||
149 | |||
150 | |||
151 | |||
152 | endp |
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153 | |||
154 | |||
155 | proc alloc_page |
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156 | |||
157 | |||
158 | cli |
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159 | mov ebx, [page_start] |
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160 | mov ecx, [page_end] |
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161 | .l1: |
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162 | bsf eax,[ebx]; |
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163 | jnz .found |
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164 | add ebx,4 |
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165 | cmp ebx, ecx |
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166 | jb .l1 |
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167 | popfd |
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168 | xor eax,eax |
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169 | ret |
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170 | .found: |
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171 | btr [ebx], eax |
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172 | mov [page_start],ebx |
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173 | sub ebx, sys_pgmap |
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174 | lea eax, [eax+ebx*8] |
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254 | serge | 175 | shl eax, 12 |
164 | serge | 176 | dec [pg_data.pages_free] |
177 | popfd |
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178 | ret |
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179 | endp |
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180 | |||
181 | |||
182 | proc alloc_pages stdcall, count:dword |
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183 | pushfd |
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184 | cli |
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185 | mov eax, [count] |
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186 | add eax, 7 |
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187 | shr eax, 3 |
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188 | mov [count], eax |
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189 | cmp eax, [pg_data.pages_free] |
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190 | ja .fail |
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191 | |||
192 | |||
193 | mov ebx, [page_end] |
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194 | .find: |
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195 | mov edx, [count] |
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196 | mov edi, ecx |
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197 | .match: |
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198 | cmp byte [ecx], 0xFF |
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199 | jne .next |
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200 | dec edx |
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201 | jz .ok |
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202 | inc ecx |
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203 | cmp ecx,ebx |
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204 | jb .match |
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205 | .fail: xor eax, eax |
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206 | popfd |
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207 | ret |
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208 | .next: |
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209 | inc ecx |
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210 | cmp ecx, ebx |
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211 | jb .find |
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212 | popfd |
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213 | xor eax, eax |
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214 | ret |
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215 | .ok: |
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216 | sub ecx, edi |
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217 | inc ecx |
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218 | mov esi, edi |
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219 | xor eax, eax |
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220 | rep stosb |
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221 | sub esi, sys_pgmap |
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222 | shl esi, 3+12 |
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223 | mov eax, esi |
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224 | mov ebx, [count] |
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225 | shl ebx, 3 |
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226 | sub [pg_data.pages_free], ebx |
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227 | popfd |
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228 | ret |
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229 | endp |
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230 | |||
231 | |||
232 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
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233 | mov eax, [phis_addr] |
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234 | and eax, not 0xFFF |
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235 | or eax, [flags] |
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236 | mov ebx, [lin_addr] |
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237 | shr ebx, 12 |
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238 | mov [pages_tab+ebx*4], eax |
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239 | mov eax, [lin_addr] |
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240 | invlpg [eax] |
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241 | ret |
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242 | endp |
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243 | |||
244 | |||
245 | proc free_page |
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246 | ;arg: eax page address |
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247 | pushfd |
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248 | cli |
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249 | inc [pg_data.pages_free] |
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250 | shr eax, 12 ;page index |
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251 | mov ebx, sys_pgmap |
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252 | bts [ebx], eax ;that's all! |
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253 | shr eax, 3 |
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254 | and eax, not 3 ;dword offset from page_map |
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255 | add eax, ebx |
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256 | cmp [page_start], eax |
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257 | ja @f |
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258 | popfd |
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259 | ret |
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260 | @@: |
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261 | mov [page_start], eax |
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262 | popfd |
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263 | ret |
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264 | endp |
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265 | |||
266 | |||
267 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
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188 | serge | 268 | mov ebx, [lin_addr] |
164 | serge | 269 | shr ebx, 22 |
270 | mov eax, [phis_addr] |
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271 | and eax, not 0xFFF |
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272 | or eax, PG_UW ;+PG_NOCACHE |
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273 | mov dword [current_pgdir+ebx*4], eax |
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188 | serge | 274 | mov eax, [lin_addr] |
164 | serge | 275 | shr eax, 10 |
276 | add eax, pages_tab |
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277 | invlpg [eax] |
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278 | ret |
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279 | endp |
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280 | |||
281 | |||
282 | proc init_LFB |
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283 | cmp dword [LFBAddress], -1 |
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284 | jne @f |
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285 | mov [0x2f0000+0x901c],byte 2 |
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201 | serge | 286 | stdcall kernel_alloc, 0x280000 |
164 | serge | 287 | mov [LFBAddress], eax |
288 | ret |
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289 | @@: |
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290 | test [SCR_MODE],word 0100000000000000b |
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291 | jnz @f |
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211 | serge | 292 | mov [0x2f0000+0x901c],byte 2 |
293 | ret |
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294 | @@: |
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295 | call map_LFB |
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164 | serge | 296 | ret |
297 | endp |
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298 | |||
299 | |||
300 | proc map_LFB |
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301 | locals |
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302 | pg_count dd ? |
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303 | endl |
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304 | |||
305 | |||
306 | mov esi, [LFBAddress] |
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307 | mov dword [exp_lfb+4], esi |
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214 | serge | 308 | |
309 | |||
164 | serge | 310 | mov [pg_count], edi |
311 | shr edi, 10 |
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312 | |||
313 | |||
314 | jnc .map_page_tables |
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315 | mov ebx, esi |
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316 | or esi, PG_LARGE+PG_UW |
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317 | shr ebx, 20 |
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318 | mov ecx, ebx |
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319 | @@: |
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320 | mov [sys_pgdir+ebx], esi |
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321 | add ebx, 4 |
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322 | add esi, 0x00400000 |
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323 | dec edi |
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324 | jnz @B |
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325 | |||
326 | |||
207 | serge | 327 | jnc @F |
328 | or dword [sys_pgdir+ecx], PG_GLOBAL |
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164 | serge | 329 | @@: |
207 | serge | 330 | mov eax, cr3 ;flush TLB |
164 | serge | 331 | mov cr3, eax |
332 | ret |
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333 | |||
334 | |||
335 | |||
336 | |||
337 | call alloc_page |
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338 | stdcall map_page_table, esi, eax |
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188 | serge | 339 | add esi, 0x00400000 |
164 | serge | 340 | dec edi |
341 | jnz @B |
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342 | |||
343 | |||
344 | mov esi, eax |
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345 | shr esi, 10 |
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346 | add esi, pages_tab |
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347 | or eax, PG_UW |
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348 | mov ecx, [pg_count] |
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349 | shr ecx, 2 |
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350 | .map: |
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351 | mov [esi], eax |
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352 | add eax, 0x1000 |
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353 | mov [esi+4], eax |
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354 | add eax, 0x1000 |
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355 | mov [esi+8], eax |
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356 | add eax, 0x1000 |
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357 | mov [esi+12], eax |
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358 | add eax, 0x1000 |
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359 | add esi, 16 |
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360 | sub ecx, 1 |
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361 | jnz .map |
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362 | |||
363 | |||
364 | mov cr3, eax |
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365 | |||
366 | |||
367 | endp |
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368 | |||
369 | |||
370 | proc new_mem_resize stdcall, new_size:dword |
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371 | |||
372 | |||
373 | |||
374 | |||
375 | add edi,4095 |
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376 | and edi,not 4095 |
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377 | mov [new_size], edi |
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378 | |||
379 | |||
380 | shl edx,8 |
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381 | cmp [PROC_BASE+APPDATA.heap_base+edx],0 |
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172 | serge | 382 | jne .exit |
383 | |||
384 | |||
385 | add esi, 4095 |
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164 | serge | 386 | and esi, not 4095 |
387 | |||
388 | |||
389 | jae .expand |
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390 | |||
391 | |||
392 | shr esi, 12 |
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393 | @@: |
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394 | mov eax, [pages_tab+0x00181000+edi*4] |
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395 | test eax, 1 |
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396 | jz .next |
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397 | mov dword [pages_tab+0x00181000+edi*4], 2 |
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398 | mov ebx, edi |
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399 | shl ebx, 12 |
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400 | invlpg [ebx+std_application_base_address] |
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401 | call free_page |
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402 | |||
403 | |||
404 | cmp edi, esi |
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405 | jb @B |
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406 | |||
407 | |||
408 | |||
409 | |||
410 | mov [PROC_BASE+0x8c+edx],ebx |
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411 | |||
412 | |||
413 | ;application memory size infomation |
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414 | mov ecx,[PROC_BASE+0xb8+edx] |
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415 | mov eax,2 |
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416 | |||
417 | |||
418 | ;eax = current slot |
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419 | ;ebx = new memory size |
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420 | ;ecx = page directory |
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421 | cmp eax,[TASK_COUNT] |
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422 | jg .search_threads_end |
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423 | mov edx,eax |
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424 | shl edx,5 |
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425 | cmp word [CURRENT_TASK+edx+0xa],9 ;if slot empty? |
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426 | jz .search_threads_next |
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427 | shl edx,3 |
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428 | cmp [PROC_BASE+edx+0xb8],ecx ;if it is our thread? |
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429 | jnz .search_threads_next |
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430 | mov [PROC_BASE+edx+0x8c],ebx ;update memory size |
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431 | .search_threads_next: |
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432 | inc eax |
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433 | jmp .search_threads |
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434 | .search_threads_end: |
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435 | xor eax, eax |
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436 | dec [pg_data.pg_mutex] |
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437 | ret |
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438 | |||
439 | |||
440 | add edi, new_app_base |
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441 | add esi, new_app_base |
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442 | |||
443 | |||
444 | push edi |
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445 | |||
446 | |||
447 | and edi, not(0x3FFFFF) |
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448 | add esi, 0x3FFFFF |
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449 | and esi, not(0x3FFFFF) |
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450 | |||
451 | |||
452 | jae .grow |
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453 | |||
454 | |||
455 | |||
456 | |||
457 | call alloc_page |
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458 | test eax, eax |
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459 | jz .exit |
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460 | |||
461 | |||
188 | serge | 462 | |
164 | serge | 463 | |
464 | shr edi, 10 |
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465 | add edi, pages_tab |
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466 | mov ecx, 1024 |
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467 | xor eax, eax |
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468 | cld |
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469 | rep stosd |
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470 | pop edi |
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471 | |||
472 | |||
473 | cmp edi, esi |
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474 | jb @B |
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475 | .grow: |
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476 | pop edi |
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477 | pop esi |
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478 | @@: |
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479 | call alloc_page |
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480 | test eax, eax |
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481 | jz .exit |
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482 | stdcall map_page,esi,eax,dword PG_UW |
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483 | |||
484 | |||
485 | mov edi, esi |
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486 | xor eax, eax |
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487 | mov ecx, 1024 |
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488 | cld |
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489 | rep stosd |
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490 | pop edi |
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491 | |||
492 | |||
493 | cmp esi, edi |
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494 | jna @B |
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495 | |||
496 | |||
497 | .exit: |
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498 | xor eax, eax |
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499 | inc eax |
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500 | dec [pg_data.pg_mutex] |
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501 | ret |
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502 | endp |
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503 | |||
504 | |||
505 | proc get_pg_addr stdcall, lin_addr:dword |
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506 | mov ebx, [lin_addr] |
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507 | shr ebx, 12 |
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508 | mov eax, [pages_tab+ebx*4] |
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509 | and eax, 0xFFFFF000 |
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510 | ret |
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511 | endp |
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512 | |||
513 | |||
188 | serge | 514 | proc page_fault_handler |
164 | serge | 515 | pushad |
516 | |||
517 | |||
518 | mov eax, cr2 |
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519 | push eax |
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172 | serge | 520 | push ds |
164 | serge | 521 | push es |
188 | serge | 522 | |
164 | serge | 523 | |
524 | mov ds, ax |
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525 | mov es, ax |
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188 | serge | 526 | |
164 | serge | 527 | |
188 | serge | 528 | |
529 | |||
164 | serge | 530 | |
531 | |||
532 | jae .lfb_addr |
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533 | |||
534 | |||
535 | jae .user_space |
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536 | |||
537 | |||
188 | serge | 538 | jae .alloc |
539 | |||
540 | |||
164 | serge | 541 | jae .tab_space |
542 | |||
543 | |||
544 | |||
545 | |||
546 | shr ebx, 12 |
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547 | mov ecx, ebx |
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172 | serge | 548 | shr ecx, 10 |
549 | mov edx, [master_tab+ecx*4] |
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550 | test edx, 1 |
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551 | jz .fail |
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552 | |||
553 | |||
164 | serge | 554 | test eax, 2 |
555 | jz .fail |
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172 | serge | 556 | .alloc: |
188 | serge | 557 | call alloc_page |
164 | serge | 558 | and eax, eax |
559 | jz .exit |
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560 | |||
561 | |||
562 | |||
563 | |||
188 | serge | 564 | and edi, 0xFFFFF000 |
565 | mov ecx, 1024 |
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164 | serge | 566 | xor eax, eax |
567 | cld |
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188 | serge | 568 | rep stosd |
569 | .exit: |
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164 | serge | 570 | pop es |
188 | serge | 571 | pop ds |
164 | serge | 572 | mov esp, ebp |
573 | popad |
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574 | add esp, 4 |
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575 | iretd |
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576 | .fail: |
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172 | serge | 577 | pop es |
188 | serge | 578 | pop ds |
172 | serge | 579 | mov esp, ebp |
580 | popad |
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581 | add esp, 4 |
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582 | |||
164 | serge | 583 | |
172 | serge | 584 | |
585 | |||
586 | jmp exc_c |
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587 | iretd |
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588 | |||
589 | |||
164 | serge | 590 | ; shr ebx, 12 |
188 | serge | 591 | ; mov eax, [pages_tab+ebx*4] |
592 | ; shr ebx, 10 |
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593 | ; mov eax, [master_tab+ebx*4] |
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594 | jmp .exit |
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595 | .old_addr: |
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164 | serge | 596 | ; shr ebx, 12 |
188 | serge | 597 | ; mov eax, [pages_tab+ebx*4] |
164 | serge | 598 | ; shr ebx, 10 |
188 | serge | 599 | ; mov eax, [master_tab+ebx*4] |
600 | jmp .exit |
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601 | .lfb_addr: |
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164 | serge | 602 | ; shr ebx, 22 |
188 | serge | 603 | ; ;mov ecx, [sys_page_dir] |
604 | ; mov eax, [master_tab+ebx*4] |
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605 | jmp .exit |
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606 | .tab_space: |
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164 | serge | 607 | ; shr ebx, 12 |
188 | serge | 608 | ; mov eax, [pages_tab+ebx*4] |
164 | serge | 609 | ; shr ebx, 10 |
188 | serge | 610 | ; ;mov ecx, [sys_page_dir] |
611 | ; mov eax, [master_tab+ebx*4] |
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612 | jmp .exit |
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613 | endp |
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164 | serge | 614 | |
615 | |||
616 | proc map_mem stdcall, lin_addr:dword,pdir:dword,\ |
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617 | ofs:dword,buf_size:dword |
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618 | mov eax, [buf_size] |
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619 | test eax, eax |
||
620 | jz .exit |
||
621 | |||
622 | |||
623 | and eax, 0xFFFFF000 |
||
624 | |||
625 | |||
626 | mov ebx, [ofs] |
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627 | shr ebx, 22 |
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628 | mov esi, [ipc_pdir] |
||
629 | mov edi, [ipc_ptab] |
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630 | mov eax, [esi+ebx*4] |
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631 | and eax, 0xFFFFF000 |
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632 | test eax, eax |
||
633 | jz .exit |
||
634 | stdcall map_page,edi,eax,dword PG_UW |
||
635 | ; inc ebx |
||
636 | ; add edi, 0x1000 |
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637 | ; mov eax, [esi+ebx*4] |
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638 | ; test eax, eax |
||
639 | ; jz @f |
||
640 | ; and eax, 0xFFFFF000 |
||
641 | ; stdcall map_page, edi, eax |
||
642 | |||
643 | |||
644 | and edi, 0xFFFFF000 |
||
645 | mov ecx, [buf_size] |
||
646 | add ecx, 4095 |
||
647 | shr ecx, 12 |
||
648 | inc ecx |
||
649 | |||
650 | |||
651 | shr edx, 12 |
||
652 | and edx, 0x3FF |
||
653 | mov esi, [ipc_ptab] |
||
654 | |||
655 | |||
656 | and eax, 0xFFFFF000 |
||
657 | test eax, eax |
||
658 | jz .exit |
||
659 | stdcall map_page,edi,eax,dword PG_UW |
||
660 | add edi, 0x1000 |
||
661 | inc edx |
||
662 | dec ecx |
||
663 | jnz .map |
||
664 | |||
665 | |||
666 | ret |
||
667 | endp |
||
668 | |||
669 | |||
670 | proc map_memEx stdcall, lin_addr:dword,pdir:dword,\ |
||
671 | ofs:dword,buf_size:dword |
||
672 | mov eax, [buf_size] |
||
673 | test eax, eax |
||
674 | jz .exit |
||
675 | |||
676 | |||
677 | and eax, 0xFFFFF000 |
||
678 | |||
679 | |||
680 | mov ebx, [ofs] |
||
681 | shr ebx, 22 |
||
682 | mov esi, [proc_mem_pdir] |
||
683 | mov edi, [proc_mem_tab] |
||
684 | mov eax, [esi+ebx*4] |
||
685 | and eax, 0xFFFFF000 |
||
686 | test eax, eax |
||
687 | jz .exit |
||
688 | stdcall map_page,edi,eax,dword PG_UW |
||
689 | |||
690 | |||
691 | and edi, 0xFFFFF000 |
||
692 | mov ecx, [buf_size] |
||
693 | add ecx, 4095 |
||
694 | shr ecx, 12 |
||
695 | inc ecx |
||
696 | |||
697 | |||
698 | shr edx, 12 |
||
699 | and edx, 0x3FF |
||
700 | mov esi, [proc_mem_tab] |
||
701 | |||
702 | |||
703 | ; and eax, 0xFFFFF000 |
||
704 | ; test eax, eax |
||
705 | ; jz .exit |
||
706 | stdcall map_page,edi,eax,dword PG_UW |
||
707 | add edi, 0x1000 |
||
708 | inc edx |
||
709 | dec ecx |
||
710 | jnz .map |
||
711 | .exit: |
||
712 | ret |
||
713 | endp |
||
714 | |||
715 | |||
716 | |||
717 | |||
718 | |||
719 | ;input: |
||
720 | ; eax=1 - set ipc buffer area |
||
721 | ; ebx=address of buffer |
||
722 | ; ecx=size of buffer |
||
723 | ; eax=2 - send message |
||
724 | ; ebx=PID |
||
725 | ; ecx=address of message |
||
726 | ; edx=size of message |
||
727 | |||
728 | |||
729 | jne @f |
||
730 | call set_ipc_buff |
||
731 | mov [esp+36], eax |
||
732 | ret |
||
733 | @@: |
||
734 | cmp eax, 2 |
||
735 | jne @f |
||
736 | stdcall sys_ipc_send, ebx, ecx, edx |
||
737 | mov [esp+36], eax |
||
738 | ret |
||
739 | @@: |
||
740 | xor eax, eax |
||
741 | not eax |
||
742 | mov [esp+36], eax |
||
743 | ret |
||
744 | |||
745 | |||
746 | proc set_ipc_buff |
||
747 | |||
748 | |||
749 | shl eax,8 |
||
750 | add eax, PROC_BASE |
||
751 | pushf |
||
752 | cli |
||
753 | mov [eax+0xA0],ebx ;set fields in extended information area |
||
754 | mov [eax+0xA4],ecx |
||
755 | |||
756 | |||
757 | add ecx, ebx |
||
758 | add ecx, 4095 |
||
759 | and ecx, not 4095 |
||
760 | |||
761 | |||
762 | add ebx, 0x1000 |
||
763 | cmp ebx, ecx |
||
764 | jna .touch |
||
765 | |||
766 | |||
767 | xor eax, eax |
||
768 | ret |
||
769 | endp |
||
770 | |||
771 | |||
772 | locals |
||
773 | dst_slot dd ? |
||
774 | dst_offset dd ? |
||
775 | buf_size dd ? |
||
776 | endl |
||
777 | |||
778 | |||
779 | cli |
||
780 | |||
781 | |||
782 | call pid_to_slot |
||
783 | test eax,eax |
||
784 | jz .no_pid |
||
785 | |||
786 | |||
787 | shl eax,8 |
||
788 | mov edi,[eax+PROC_BASE+0xa0] ;is ipc area defined? |
||
789 | test edi,edi |
||
790 | jz .no_ipc_area |
||
791 | |||
792 | |||
793 | add edi, new_app_base |
||
794 | and ebx, 0xFFF |
||
795 | mov [dst_offset], ebx |
||
796 | |||
797 | |||
798 | mov [buf_size], esi |
||
799 | |||
800 | |||
801 | edi, esi |
||
802 | |||
803 | |||
804 | add edi, [ipc_tmp] |
||
805 | cmp dword [edi], 0 |
||
806 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
807 | |||
227 | serge | 808 | |
164 | serge | 809 | mov edx, ebx |
810 | add ebx, 8 |
||
811 | add ebx, [msg_size] |
||
812 | cmp ebx, [buf_size] |
||
813 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
814 | |||
227 | serge | 815 | |
164 | serge | 816 | mov eax,[TASK_BASE] |
817 | mov eax, [eax+0x04] ;eax - our PID |
||
818 | mov edi, [dst_offset] |
||
819 | add edi, [ipc_tmp] |
||
820 | add edi, edx |
||
821 | mov [edi], eax |
||
822 | mov ecx, [msg_size] |
||
823 | |||
824 | |||
825 | add edi, 8 |
||
826 | mov esi, [msg_addr] |
||
827 | add esi, new_app_base |
||
828 | cld |
||
829 | rep movsb |
||
830 | |||
831 | |||
832 | mov edx, ebx |
||
833 | shr ebx, 12 |
||
834 | xor eax, eax |
||
835 | mov [pages_tab+ebx*4], eax |
||
836 | invlpg [edx] |
||
837 | |||
838 | |||
839 | mov edx, ebx |
||
840 | shr ebx, 12 |
||
841 | xor eax, eax |
||
842 | mov [pages_tab+ebx*4], eax |
||
843 | invlpg [edx] |
||
844 | |||
845 | |||
846 | mov edx, ebx |
||
847 | shr ebx, 12 |
||
848 | xor eax, eax |
||
849 | mov [pages_tab+ebx*4], eax |
||
850 | invlpg [edx] |
||
851 | |||
852 | |||
853 | shl eax, 8 |
||
854 | or [eax+PROC_BASE+0xA8],dword 0x40 |
||
855 | cmp dword [check_idle_semaphore],20 |
||
856 | jge .ipc_no_cis |
||
857 | |||
858 | |||
859 | .ipc_no_cis: |
||
860 | popf |
||
861 | xor eax, eax |
||
862 | ret |
||
863 | .no_pid: |
||
864 | popf |
||
865 | mov eax, 4 |
||
866 | ret |
||
867 | .no_ipc_area: |
||
868 | popf |
||
869 | xor eax, eax |
||
870 | inc eax |
||
871 | ret |
||
872 | .ipc_blocked: |
||
873 | popf |
||
874 | mov eax, 2 |
||
875 | ret |
||
876 | .buffer_overflow: |
||
877 | popf |
||
878 | mov eax, 3 |
||
879 | ret |
||
880 | endp |
||
881 | |||
882 | |||
883 | sysfn_meminfo: |
||
170 | serge | 884 | |
164 | serge | 885 | |
170 | serge | 886 | cmp ebx, new_app_base |
172 | serge | 887 | jb .fail |
888 | |||
889 | |||
164 | serge | 890 | mov [ebx], eax |
170 | serge | 891 | shl eax, 12 |
172 | serge | 892 | mov [esp+36], eax |
893 | mov ecx, [pg_data.pages_free] |
||
170 | serge | 894 | mov [ebx+4], ecx |
895 | mov edx, [pg_data.pages_faults] |
||
896 | mov [ebx+8], edx |
||
897 | mov esi, [heap_size] |
||
898 | mov [ebx+12], esi |
||
899 | mov edi, [heap_free] |
||
900 | mov [ebx+16], edi |
||
901 | mov eax, [heap_blocks] |
||
902 | mov [ebx+20], eax |
||
903 | mov ecx, [free_blocks] |
||
904 | mov [ebx+24], ecx |
||
905 | ret |
||
164 | serge | 906 | .fail: |
172 | serge | 907 | mov dword [esp+36], -1 |
908 | ret |
||
909 | |||
164 | serge | 910 | |
911 | new_services: |
||
912 | |||
913 | |||
914 | jle sys_sheduler |
||
915 | |||
916 | |||
170 | serge | 917 | jb .fail |
164 | serge | 918 | ja @f |
919 | |||
920 | |||
188 | serge | 921 | mov [esp+36], eax |
164 | serge | 922 | ret |
923 | @@: |
||
924 | cmp eax, 12 |
||
925 | ja @f |
||
926 | |||
927 | |||
928 | mov [esp+36], eax |
||
929 | ret |
||
930 | @@: |
||
931 | cmp eax, 13 |
||
932 | ja @f |
||
933 | add ebx, new_app_base |
||
188 | serge | 934 | stdcall user_free, ebx |
164 | serge | 935 | mov [esp+36], eax |
936 | ret |
||
937 | @@: |
||
938 | cmp eax, 14 |
||
939 | ja @f |
||
940 | add ebx, new_app_base |
||
227 | serge | 941 | cmp ebx, new_app_base |
172 | serge | 942 | jb .fail |
943 | stdcall get_event_ex, ebx, ecx |
||
227 | serge | 944 | mov [esp+36], eax |
945 | ret |
||
164 | serge | 946 | @@: |
947 | cmp eax, 15 |
||
948 | ja @f |
||
949 | mov ecx, [CURRENT_TASK] |
||
950 | shl ecx, 8 |
||
951 | mov eax, [ecx+PROC_BASE+APPDATA.fpu_handler] |
||
952 | mov [ecx+PROC_BASE+APPDATA.fpu_handler], ebx |
||
953 | mov [esp+36], eax |
||
954 | ret |
||
955 | @@: |
||
956 | cmp eax, 16 |
||
957 | ja @f |
||
958 | |||
959 | |||
188 | serge | 960 | jz .fail |
961 | add ebx, new_app_base |
||
164 | serge | 962 | cmp ebx, new_app_base |
172 | serge | 963 | jb .fail |
964 | stdcall get_service, ebx |
||
164 | serge | 965 | mov [esp+36], eax |
966 | ret |
||
967 | @@: |
||
968 | cmp eax, 17 |
||
969 | ja @f |
||
970 | stdcall srv_handlerEx, ebx |
||
971 | mov [esp+36], eax |
||
972 | ret |
||
973 | @@: |
||
168 | serge | 974 | cmp eax, 18 |
975 | ja @f |
||
976 | mov ecx, [CURRENT_TASK] |
||
977 | shl ecx, 8 |
||
978 | mov eax, [ecx+PROC_BASE+APPDATA.sse_handler] |
||
979 | mov [ecx+PROC_BASE+APPDATA.sse_handler], ebx |
||
980 | mov [esp+36], eax |
||
981 | ret |
||
982 | @@: |
||
164 | serge | 983 | cmp eax, 19 |
198 | serge | 984 | ja .fail |
227 | serge | 985 | add ebx, new_app_base |
198 | serge | 986 | cmp ebx, new_app_base |
987 | jb .fail |
||
988 | stdcall load_library, ebx |
||
989 | mov [esp+36], eax |
||
990 | ret |
||
991 | |||
227 | serge | 992 | |
164 | serge | 993 | xor eax, eax |
994 | mov [esp+36], eax |
||
995 | ret |
||
996 | |||
997 | |||
998 | proc strncmp stdcall, str1:dword, str2:dword, count:dword |
||
999 | |||
1000 | |||
1001 | jecxz .end |
||
1002 | |||
1003 | |||
1004 | |||
1005 | |||
1006 | mov esi,edi |
||
1007 | xor eax,eax |
||
1008 | repne scasb |
||
1009 | neg ecx ; cx = count - strlen |
||
1010 | add ecx,ebx ; strlen + count - strlen |
||
1011 | |||
1012 | |||
1013 | mov edi,esi |
||
1014 | mov esi,[str2] |
||
1015 | repe cmpsb |
||
1016 | mov al,[esi-1] |
||
1017 | xor ecx,ecx |
||
1018 | |||
1019 | |||
1020 | ja .str2_big |
||
1021 | je .end |
||
1022 | |||
1023 | |||
1024 | sub ecx,2 |
||
1025 | |||
1026 | |||
1027 | not ecx |
||
1028 | .end: |
||
1029 | mov eax,ecx |
||
1030 | ret |
||
1031 | endp |
||
1032 | |||
1033 | |||
1034 | proc test_cpu |
||
1035 | locals |
||
1036 | cpu_type dd ? |
||
166 | serge | 1037 | cpu_id dd ? |
1038 | cpu_Intel dd ? |
||
1039 | cpu_AMD dd ? |
||
1040 | endl |
||
164 | serge | 1041 | |
1042 | |||
1043 | xor eax, eax |
||
211 | serge | 1044 | mov [cpu_caps], eax |
1045 | mov [cpu_caps+4], eax |
||
1046 | |||
164 | serge | 1047 | |
1048 | pop eax |
||
1049 | mov ecx, eax |
||
1050 | xor eax, 0x40000 |
||
1051 | push eax |
||
1052 | popfd |
||
1053 | pushfd |
||
1054 | pop eax |
||
1055 | xor eax, ecx |
||
1056 | mov [cpu_type], CPU_386 |
||
1057 | jz .end_cpuid |
||
221 | serge | 1058 | push ecx |
164 | serge | 1059 | popfd |
1060 | |||
1061 | |||
1062 | mov eax, ecx |
||
1063 | xor eax, 0x200000 |
||
1064 | push eax |
||
1065 | popfd |
||
1066 | pushfd |
||
1067 | pop eax |
||
1068 | xor eax, ecx |
||
1069 | je .end_cpuid |
||
221 | serge | 1070 | mov [cpu_id], 1 |
164 | serge | 1071 | |
1072 | |||
1073 | cpuid |
||
1074 | mov [cpu_vendor], ebx |
||
1075 | mov [cpu_vendor+4], edx |
||
1076 | mov [cpu_vendor+8], ecx |
||
1077 | cmp ebx, dword [intel_str] |
||
1078 | jne .check_AMD |
||
1079 | cmp edx, dword [intel_str+4] |
||
1080 | jne .check_AMD |
||
1081 | cmp ecx, dword [intel_str+8] |
||
1082 | jne .check_AMD |
||
1083 | mov [cpu_Intel], 1 |
||
1084 | cmp eax, 1 |
||
1085 | jl .end_cpuid |
||
1086 | mov eax, 1 |
||
1087 | cpuid |
||
1088 | mov [cpu_sign], eax |
||
1089 | mov [cpu_info], ebx |
||
1090 | mov [cpu_caps], edx |
||
1091 | mov [cpu_caps+4],ecx |
||
1092 | |||
1093 | |||
1094 | and eax, 0x0f |
||
1095 | ret |
||
1096 | .end_cpuid: |
||
1097 | mov eax, [cpu_type] |
||
1098 | ret |
||
1099 | |||
1100 | |||
1101 | cmp ebx, dword [AMD_str] |
||
1102 | jne .unknown |
||
221 | serge | 1103 | cmp edx, dword [AMD_str+4] |
164 | serge | 1104 | jne .unknown |
221 | serge | 1105 | cmp ecx, dword [AMD_str+8] |
164 | serge | 1106 | jne .unknown |
221 | serge | 1107 | mov [cpu_AMD], 1 |
164 | serge | 1108 | cmp eax, 1 |
1109 | jl .unknown |
||
221 | serge | 1110 | mov eax, 1 |
164 | serge | 1111 | cpuid |
1112 | mov [cpu_sign], eax |
||
1113 | mov [cpu_info], ebx |
||
1114 | mov [cpu_caps], edx |
||
1115 | mov [cpu_caps+4],ecx |
||
1116 | shr eax, 8 |
||
1117 | and eax, 0x0f |
||
1118 | ret |
||
1119 | .unknown: |
||
221 | serge | 1120 | mov eax, 1 |
1121 | cpuid |
||
1122 | mov [cpu_sign], eax |
||
1123 | mov [cpu_info], ebx |
||
1124 | mov [cpu_caps], edx |
||
1125 | mov [cpu_caps+4],ecx |
||
1126 | shr eax, 8 |
||
1127 | and eax, 0x0f |
||
1128 | ret |
||
1129 | endp |
||
164 | serge | 1130 | |
1131 | |||
1132 | MEM_WC equ 1 ;write combined memory |
||
1133 | MEM_UC equ 0 ;uncached memory |
||
1134 | |||
1135 | |||
1136 | proc init_mtrr |
||
1137 | |||
1138 | |||
1139 | je .exit |
||
1140 | |||
1141 | |||
211 | serge | 1142 | jnc .exit |
1143 | |||
1144 | |||
164 | serge | 1145 | or eax, 0x60000000 ;disable caching |
1146 | mov cr0, eax |
||
1147 | wbinvd ;invalidate cache |
||
1148 | |||
1149 | |||
1150 | rdmsr ; |
||
1151 | push eax |
||
1152 | |||
1153 | |||
1154 | xor eax, eax |
||
1155 | mov ecx, 0x2FF |
||
1156 | wrmsr ;disable all MTRR |
||
1157 | |||
1158 | |||
1159 | stdcall set_mtrr, dword 1,[LFBAddress],[LFBSize],MEM_WC |
||
1160 | xor edx, edx |
||
1161 | xor eax, eax |
||
1162 | mov ecx, 0x204 |
||
1163 | mov ebx, 6 |
||
1164 | @@: |
||
1165 | wrmsr ;disable unused MTRR |
||
1166 | inc ecx |
||
1167 | wrmsr |
||
1168 | inc ecx |
||
1169 | dec ebx |
||
1170 | jnz @b |
||
1171 | |||
1172 | |||
1173 | |||
1174 | |||
1175 | or eax, 0x800 ;set default memtype to UC |
||
1176 | and al, 0xF0 |
||
1177 | mov ecx, 0x2FF |
||
1178 | wrmsr ;and enable MTRR |
||
1179 | |||
1180 | |||
1181 | and eax, not 0x60000000 |
||
1182 | mov cr0, eax ; enable caching |
||
1183 | .exit: |
||
1184 | ret |
||
1185 | endp |
||
1186 | |||
1187 | |||
1188 | proc set_mtrr stdcall, reg:dword,base:dword,size:dword,mem_type:dword |
||
1189 | |||
1190 | |||
1191 | mov eax, [base] |
||
1192 | or eax, [mem_type] |
||
1193 | mov ecx, [reg] |
||
1194 | lea ecx, [0x200+ecx*2] |
||
1195 | wrmsr |
||
1196 | |||
1197 | |||
1198 | dec ebx |
||
1199 | mov eax, 0xFFFFFFFF |
||
1200 | mov edx, 0x0000000F |
||
1201 | sub eax, ebx |
||
1202 | sbb edx, 0 |
||
1203 | or eax, 0x800 |
||
1204 | inc ecx |
||
1205 | wrmsr |
||
1206 | ret |
||
1207 | endp |
||
1208 | |||
1209 | |||
172 | serge | 1210 | proc stall stdcall, delay:dword |
1211 | push ecx |
||
1212 | push edx |
||
1213 | push ebx |
||
1214 | push eax |
||
1215 | |||
1216 | |||
1217 | mul [stall_mcs] |
||
1218 | mov ebx, eax ;low |
||
1219 | mov ecx, edx ;high |
||
1220 | rdtsc |
||
1221 | add ebx, eax |
||
1222 | adc ecx,edx |
||
1223 | @@: |
||
1224 | rdtsc |
||
1225 | sub eax, ebx |
||
1226 | sbb edx, ecx |
||
1227 | jb @B |
||
1228 | |||
1229 | |||
1230 | pop ebx |
||
1231 | pop edx |
||
1232 | pop ecx |
||
1233 | ret |
||
1234 | endp |
||
1235 | |||
1236 | |||
164 | serge | 1237 | align 4 |
1238 | intel_str db "GenuineIntel",0 |
||
1239 | AMD_str db "AuthenticAMD",0 |
||
1240 | endg |
||
1241 | |||
1242 | |||
1243 | align 16 |
||
1244 | irq_tab rd 16 |
||
1245 | |||
1246 | |||
1247 | |||
1248 | |||
1249 | |||
1250 | ipc_pdir rd 1 |
||
1251 | ipc_ptab rd 1 |
||
1252 | |||
1253 | |||
1254 | proc_mem_pdir rd 1 |
||
1255 | proc_mem_tab rd 1 |
||
1256 | |||
1257 | |||
1258 | tmp_task_ptab rd 1 |
||
1259 | tmp_task_data rd 1 |
||
1260 | |||
1261 | |||
1262 | fdd_buff rd 1 |
||
1263 | LFBSize rd 1 |
||
214 | serge | 1264 | |
164 | serge | 1265 | |
172 | serge | 1266 | ;;CPUID information |
164 | serge | 1267 | |
1268 | |||
1269 | cpu_sign rd 1 |
||
1270 | cpu_info rd 1 |
||
1271 | |||
1272 | |||
221 | serge | 1273 | |
1274 | |||
1275 | cur_saved_data rb 4096 |
||
1276 | |||
1277 | |||
1278 | cursor_map rd 2 |
||
1279 | cursor_start rd 1 |
||
1280 | cursor_end rd 1 |
||
1281 | |||
1282 | |||
1283 | hw_cursor rd 1 |
||
233 | serge | 1284 | |
221 | serge | 1285 | |
1286 | scr_height rd 1 |
||
1287 | |||
1288 | |||
1289 | cur_saved_base rd 1 |
||
1290 | cur_saved_interl rd 1 |
||
1291 | cur_saved_w rd 1 |
||
1292 | cur_saved_h rd 1 |
||
1293 | |||
1294 | |||
164 | serge | 1295 | |
1296 | |||
1297 | align 16 |
||
1298 | |||
227 | serge | 1299 | |
164 | serge | 1300 | srv_tab rb 36*32 |
214 | serge | 1301 | mem_block_map rb 512 |
227 | serge | 1302 | event_map rb 128 |
1303 | mem_block_list rd 64 |
||
1304 | mem_block_mask rd 2 |
||
1305 | |||
1306 | |||
164 | serge | 1307 | srv_map rd 1 |
1308 | |||
1309 | |||
1310 | mem_block_arr rd 1 |
||
1311 | mem_block_start rd 1 |
||
1312 | mem_block_end rd 1 |
||
1313 | heap_size rd 1 |
||
170 | serge | 1314 | heap_free rd 1 |
1315 | heap_blocks rd 1 |
||
1316 | free_blocks rd 1 |
||
1317 | |||
164 | serge | 1318 | |
1319 | page_end rd 1 |
||
1320 | events rd 1 |
||
227 | serge | 1321 | event_start rd 1 |
1322 | event_end rd 1 |
||
1323 | |||
1324 | |||
164 | serge | 1325 | endg |
1326 | |||
1327 | |||
1328 | |||
1329 | ; push edx |
||
1330 | ; mov edx, 0x400 ;bocsh |
||
1331 | ; mov al,0xff ;bocsh |
||
1332 | ; out dx, al ;bocsh |
||
1333 | ; pop edx |
||
1334 | ; pop eax |
||
1335 | |||
1336 | |||
237 | serge | 1337 | |
1338 | k_strrchr: |
||
1339 | push eax |
||
1340 | xor eax,eax |
||
1341 | or ecx,-1 |
||
1342 | repne scasb |
||
1343 | add ecx,1 |
||
1344 | neg ecx |
||
1345 | sub edi,1 |
||
1346 | pop eax |
||
1347 | std |
||
1348 | repne scasb |
||
1349 | cld |
||
1350 | add edi,1 |
||
1351 | |||
1352 | |||
1353 | jne @F |
||
1354 | mov eax,edi |
||
1355 | ret |
||
1356 | @@: |
||
1357 | xor eax,eax |
||
1358 | ret |
||
1359 | |||
1360 | |||
1361 | proc k_strncpy stdcall, dest:dword, src:dword, maxlen:dword |
||
1362 | mov eax, [dest] |
||
1363 | mov esi, [src] |
||
1364 | mov ecx, [maxlen] |
||
1365 | test eax, eax |
||
1366 | jz .L9 |
||
1367 | test esi, esi |
||
1368 | jz .L9 |
||
1369 | test ecx, ecx |
||
1370 | jz .L9 |
||
1371 | |||
1372 | |||
1373 | jmp .L1 |
||
1374 | |||
1375 | |||
1376 | .L2: |
||
1377 | mov edx, [esi+eax] |
||
1378 | mov [eax], dl |
||
1379 | test dl, dl |
||
1380 | jz .L7 |
||
1381 | |||
1382 | |||
1383 | test dh, dh |
||
1384 | jz .L6 |
||
1385 | |||
1386 | |||
1387 | mov [eax+2],dl |
||
1388 | test dl, dl |
||
1389 | jz .L5 |
||
1390 | |||
1391 | |||
1392 | test dh, dh |
||
1393 | jz .L4 |
||
1394 | add eax, 4 |
||
1395 | .L1: |
||
1396 | sub ecx, 4 |
||
1397 | jae .L2 |
||
1398 | |||
1399 | |||
1400 | jz .L9 |
||
1401 | |||
1402 | |||
1403 | mov [eax], dl |
||
1404 | test dl, dl |
||
1405 | jz .L3 |
||
1406 | |||
1407 | |||
1408 | dec ecx |
||
1409 | jz .L9 |
||
1410 | |||
1411 | |||
1412 | mov [eax], dl |
||
1413 | test dl, dl |
||
1414 | jz .L3 |
||
1415 | |||
1416 | |||
1417 | dec ecx |
||
1418 | jz .L9 |
||
1419 | |||
1420 | |||
1421 | mov [eax], dl |
||
1422 | test dl, dl |
||
1423 | jz .L3 |
||
1424 | |||
1425 | |||
1426 | jmp .L9 |
||
1427 | |||
1428 | |||
1429 | inc eax |
||
1430 | |||
1431 | |||
1432 | inc eax |
||
1433 | |||
1434 | |||
1435 | inc eax |
||
1436 | .L7: |
||
1437 | add ecx,3 |
||
1438 | jz .L9 |
||
1439 | .L8: |
||
1440 | mov byte [ecx+eax], 0 |
||
1441 | .L3: |
||
1442 | dec ecx |
||
1443 | jnz .L8 |
||
1444 | .L9: |
||
1445 | ret |
||
1446 | endp |
||
1447 | |||
1448 | |||
1449 | |||
1450 | |||
1451 | |||
1452 | |||
1453 | mov eax,[esp+4] |
||
1454 | mov edx, 3 |
||
1455 | |||
1456 | |||
1457 | jz .L1 |
||
1458 | jp .L0 |
||
1459 | |||
1460 | |||
1461 | je .L2 |
||
1462 | |||
1463 | |||
1464 | cmp dh, byte [eax] |
||
1465 | |||
1466 | |||
1467 | |||
1468 | |||
1469 | xor edx, 2 |
||
1470 | |||
1471 | |||
1472 | .L0: |
||
1473 | cmp dh, [eax] |
||
1474 | je .L2 |
||
1475 | |||
1476 | |||
1477 | xor edx, edx |
||
1478 | |||
1479 | |||
1480 | mov ecx, [eax] |
||
1481 | add eax, 4 |
||
1482 | |||
1483 | |||
1484 | add ecx, magic |
||
1485 | |||
1486 | |||
1487 | jnc .L3 |
||
1488 | |||
1489 | |||
1490 | and edx, not magic |
||
1491 | jne .L3 |
||
1492 | |||
1493 | |||
1494 | add eax, 4 |
||
1495 | |||
1496 | |||
1497 | add ecx, magic |
||
1498 | dec edx |
||
1499 | jnc .L3 |
||
1500 | |||
1501 | |||
1502 | and edx, not magic |
||
1503 | jne .L3 |
||
1504 | |||
1505 | |||
1506 | add eax, 4 |
||
1507 | |||
1508 | |||
1509 | add ecx, magic |
||
1510 | |||
1511 | |||
1512 | jnc .L3 |
||
1513 | |||
1514 | |||
1515 | |||
1516 | |||
1517 | jne .L3 |
||
1518 | |||
1519 | |||
1520 | add eax, 4 |
||
1521 | |||
1522 | |||
1523 | add ecx, magic |
||
1524 | |||
1525 | |||
1526 | jnc .L3 |
||
1527 | |||
1528 | |||
1529 | |||
1530 | |||
1531 | je .L1 |
||
1532 | |||
1533 | |||
1534 | sub ecx, magic |
||
1535 | |||
1536 | |||
1537 | jz .L2 |
||
1538 | |||
1539 | |||
1540 | test ch, ch |
||
1541 | jz .L2 |
||
1542 | |||
1543 | |||
1544 | inc eax |
||
1545 | |||
1546 | |||
1547 | jz .L2 |
||
1548 | |||
1549 | |||
1550 | |||
1551 | |||
1552 | sub eax, [esp+4] |
||
1553 | ret |
||
1554 | |||
1555 | |||
1556 |