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Rev | Author | Line No. | Line |
---|---|---|---|
164 | serge | 1 | |
357 | 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 | mov [MEM_AMOUNT], edi |
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357 | serge | 21 | |
164 | serge | 22 | |
212 | serge | 23 | mov cr0, eax |
164 | serge | 24 | mov eax, edi |
25 | mov [LFBSize], 0x00800000 |
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214 | serge | 26 | ret |
164 | serge | 27 | endp |
28 | |||
29 | |||
30 | proc init_mem |
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357 | serge | 31 | |
32 | |||
33 | |||
34 | |||
35 | mov [pg_data.kernel_max], eax |
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36 | |||
37 | |||
38 | mov edx, eax |
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39 | mov [pg_data.pages_count], eax |
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40 | mov [pg_data.kernel_pages], eax |
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41 | |||
42 | |||
43 | mov [pg_data.pagemap_size], eax |
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44 | |||
45 | |||
46 | cmp edx, 3 |
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47 | ja @f |
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48 | inc edx ;at least 4Mb for kernel heap |
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49 | @@: |
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50 | mov [pg_data.kernel_tables], edx |
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51 | |||
52 | |||
164 | serge | 53 | mov edi, sys_pgdir |
54 | mov ecx, 2048 |
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55 | cld |
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357 | serge | 56 | rep stosd |
164 | serge | 57 | |
58 | |||
357 | serge | 59 | bt [cpu_caps], CAPS_PSE |
164 | serge | 60 | jnc .no_PSE |
61 | |||
62 | |||
63 | or ebx, CR4_PSE |
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64 | mov eax, PG_LARGE+PG_SW |
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65 | bt [cpu_caps], CAPS_PGE |
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66 | jnc @F |
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67 | or eax, PG_GLOBAL |
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68 | or ebx, CR4_PGE |
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69 | @@: |
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70 | mov cr4, ebx |
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168 | serge | 71 | sub [pg_data.kernel_tables], 2 |
357 | serge | 72 | |
168 | serge | 73 | |
357 | serge | 74 | add eax, 0x00400000 |
164 | serge | 75 | mov [edx+4], eax |
357 | serge | 76 | add edx, 8 |
77 | |||
164 | serge | 78 | |
357 | serge | 79 | mov ecx, (HEAP_BASE-0x800000)/4096 |
80 | jmp .map_low |
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81 | .no_PSE: |
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164 | serge | 82 | mov eax, PG_SW |
83 | mov ecx, HEAP_BASE/4096 |
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357 | serge | 84 | .map_low: |
164 | serge | 85 | mov edi, tmp_page_tab |
357 | serge | 86 | @@: ; |
87 | stosd |
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88 | add eax, 0x1000 |
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164 | serge | 89 | dec ecx |
90 | jnz @B |
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357 | serge | 91 | |
164 | serge | 92 | |
93 | shl ecx, 10 |
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357 | serge | 94 | xor eax, eax |
95 | rep stosd |
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96 | |||
97 | |||
98 | mov eax, tmp_page_tab+PG_SW |
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164 | serge | 99 | mov edi, edx |
357 | serge | 100 | |
164 | serge | 101 | |
102 | |||
103 | |||
357 | serge | 104 | add eax, 0x1000 |
164 | serge | 105 | dec ecx |
106 | jnz .map_kernel_tabs |
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107 | |||
108 | |||
378 | serge | 109 | ret |
164 | serge | 110 | endp |
111 | |||
112 | |||
113 | proc init_page_map |
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114 | |||
357 | serge | 115 | |
164 | serge | 116 | mov ecx, (HEAP_BASE/4096)/32 ;384/4 |
357 | serge | 117 | mov ebx, ecx |
118 | xor eax,eax |
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164 | serge | 119 | cld |
120 | rep stosd |
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121 | |||
122 | |||
123 | mov ecx, [pg_data.pagemap_size] |
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124 | sub ecx, ebx |
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357 | serge | 125 | shr ecx, 2 |
164 | serge | 126 | rep stosd |
127 | |||
128 | |||
357 | serge | 129 | mov edx, [pg_data.pages_count] |
164 | serge | 130 | mov ecx, [pg_data.kernel_tables] |
131 | add ecx, (HEAP_BASE/4096) and 31 |
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357 | serge | 132 | sub edx, HEAP_BASE/4096 |
133 | sub edx, ecx |
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164 | serge | 134 | mov [pg_data.pages_free], edx |
135 | |||
136 | |||
137 | mov ebx, ecx |
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138 | shr ecx, 5 |
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139 | rep stosd |
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140 | |||
141 | |||
142 | mov ecx, ebx |
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143 | and ecx, 31 |
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144 | shl eax, cl |
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145 | mov [page_start], edi; sys_pgmap+384 |
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357 | serge | 146 | stosd |
164 | serge | 147 | |
148 | |||
149 | add ebx, [pg_data.pagemap_size] |
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150 | mov [page_end], ebx |
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151 | |||
152 | |||
153 | |||
154 | |||
155 | endp |
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156 | |||
157 | |||
158 | proc alloc_page |
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159 | |||
160 | |||
161 | cli |
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162 | mov ebx, [page_start] |
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163 | mov ecx, [page_end] |
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164 | .l1: |
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165 | bsf eax,[ebx]; |
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166 | jnz .found |
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167 | add ebx,4 |
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168 | cmp ebx, ecx |
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169 | jb .l1 |
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170 | popfd |
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171 | xor eax,eax |
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172 | ret |
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173 | .found: |
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174 | btr [ebx], eax |
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175 | mov [page_start],ebx |
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176 | sub ebx, sys_pgmap |
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177 | lea eax, [eax+ebx*8] |
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254 | serge | 178 | shl eax, 12 |
164 | serge | 179 | dec [pg_data.pages_free] |
180 | popfd |
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181 | ret |
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182 | endp |
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183 | |||
184 | |||
185 | proc alloc_pages stdcall, count:dword |
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186 | pushfd |
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187 | cli |
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188 | mov eax, [count] |
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189 | add eax, 7 |
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190 | shr eax, 3 |
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191 | mov [count], eax |
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192 | cmp eax, [pg_data.pages_free] |
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193 | ja .fail |
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194 | |||
195 | |||
196 | mov ebx, [page_end] |
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197 | .find: |
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198 | mov edx, [count] |
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199 | mov edi, ecx |
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200 | .match: |
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201 | cmp byte [ecx], 0xFF |
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202 | jne .next |
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203 | dec edx |
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204 | jz .ok |
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205 | inc ecx |
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206 | cmp ecx,ebx |
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207 | jb .match |
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208 | .fail: xor eax, eax |
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209 | popfd |
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210 | ret |
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211 | .next: |
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212 | inc ecx |
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213 | cmp ecx, ebx |
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214 | jb .find |
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215 | popfd |
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216 | xor eax, eax |
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217 | ret |
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218 | .ok: |
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219 | sub ecx, edi |
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220 | inc ecx |
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221 | mov esi, edi |
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222 | xor eax, eax |
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223 | rep stosb |
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224 | sub esi, sys_pgmap |
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225 | shl esi, 3+12 |
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226 | mov eax, esi |
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227 | mov ebx, [count] |
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228 | shl ebx, 3 |
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229 | sub [pg_data.pages_free], ebx |
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230 | popfd |
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231 | ret |
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232 | endp |
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233 | |||
234 | |||
235 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
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236 | push ebx |
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321 | diamond | 237 | mov eax, [phis_addr] |
164 | serge | 238 | and eax, not 0xFFF |
239 | or eax, [flags] |
||
240 | mov ebx, [lin_addr] |
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241 | shr ebx, 12 |
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242 | mov [page_tabs+ebx*4], eax |
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365 | serge | 243 | mov eax, [lin_addr] |
164 | serge | 244 | invlpg [eax] |
245 | pop ebx |
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321 | diamond | 246 | ret |
164 | serge | 247 | endp |
248 | |||
249 | |||
250 | map_space: ;not implemented |
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281 | serge | 251 | |
252 | |||
253 | |||
254 | |||
255 | |||
256 | |||
257 | proc free_page |
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164 | serge | 258 | ;arg: eax page address |
259 | pushfd |
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260 | cli |
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261 | shr eax, 12 ;page index |
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262 | mov ebx, sys_pgmap |
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263 | bts [ebx], eax ;that's all! |
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264 | cmc |
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291 | serge | 265 | adc [pg_data.pages_free], 0 |
328 | serge | 266 | shr eax, 3 |
164 | serge | 267 | and eax, not 3 ;dword offset from page_map |
268 | add eax, ebx |
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269 | cmp [page_start], eax |
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270 | ja @f |
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271 | popfd |
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272 | ret |
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273 | @@: |
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274 | mov [page_start], eax |
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275 | popfd |
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276 | ret |
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277 | endp |
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278 | |||
279 | |||
279 | serge | 280 | ; eax= page base + page flags |
328 | serge | 281 | ; ebx= liear address |
281 | serge | 282 | ; ecx= count |
283 | |||
284 | |||
285 | commit_pages: |
||
328 | serge | 286 | |
281 | serge | 287 | |
328 | serge | 288 | jz .fail |
289 | |||
281 | serge | 290 | |
328 | serge | 291 | mov ebx, pg_data.pg_mutex |
292 | call wait_mutex ;ebx |
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293 | |||
294 | |||
295 | mov ebx, edi |
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296 | shr ebx, 12 |
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297 | @@: |
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298 | mov [page_tabs+ebx*4], eax |
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365 | serge | 299 | invlpg [edi] |
328 | serge | 300 | add edi, edx |
301 | add eax, edx |
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302 | inc ebx |
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303 | dec ecx |
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304 | jnz @B |
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305 | mov [pg_data.pg_mutex],ecx |
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306 | .fail: |
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307 | ret |
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281 | serge | 308 | |
309 | |||
328 | serge | 310 | |
281 | serge | 311 | ; eax= base |
279 | serge | 312 | ; ecx= count |
281 | serge | 313 | |
279 | serge | 314 | |
164 | serge | 315 | release_pages: |
279 | serge | 316 | |
321 | diamond | 317 | |
318 | mov ebx, pg_data.pg_mutex |
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279 | serge | 319 | call wait_mutex ;ebx |
320 | |||
321 | |||
322 | mov edi, eax |
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323 | |||
324 | |||
325 | add esi, page_tabs |
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365 | serge | 326 | |
328 | serge | 327 | |
328 | mov ebx, [page_start] |
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279 | serge | 329 | mov edx, sys_pgmap |
330 | @@: |
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331 | xor eax, eax |
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332 | xchg eax, [esi] |
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333 | invlpg [edi] |
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334 | |||
335 | |||
336 | jz .next |
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337 | |||
338 | |||
339 | bts [edx], eax |
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340 | cmc |
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291 | serge | 341 | adc ebp, 0 |
328 | serge | 342 | shr eax, 3 |
279 | serge | 343 | and eax, -4 |
344 | add eax, edx |
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345 | cmp eax, ebx |
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346 | jae .next |
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347 | |||
348 | |||
349 | .next: |
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350 | add edi, 0x1000 |
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351 | add esi, 4 |
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352 | dec ecx |
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353 | jnz @B |
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354 | mov [pg_data.pages_free], ebp |
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328 | serge | 355 | and [pg_data.pg_mutex],0 |
279 | serge | 356 | popad |
321 | diamond | 357 | ret |
279 | serge | 358 | |
359 | |||
360 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
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188 | serge | 361 | push ebx |
321 | diamond | 362 | mov ebx, [lin_addr] |
164 | serge | 363 | shr ebx, 22 |
364 | mov eax, [phis_addr] |
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365 | and eax, not 0xFFF |
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366 | or eax, PG_UW ;+PG_NOCACHE |
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367 | mov dword [master_tab+ebx*4], eax |
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378 | serge | 368 | mov eax, [lin_addr] |
164 | serge | 369 | shr eax, 10 |
370 | add eax, page_tabs |
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365 | serge | 371 | invlpg [eax] |
164 | serge | 372 | pop ebx |
321 | diamond | 373 | ret |
164 | serge | 374 | endp |
375 | |||
376 | |||
377 | proc init_LFB |
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378 | locals |
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378 | serge | 379 | pg_count dd ? |
380 | endl |
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381 | |||
382 | |||
164 | serge | 383 | jne @f |
384 | mov [0x2f0000+0x901c],byte 2 |
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201 | serge | 385 | stdcall kernel_alloc, 0x280000 |
164 | serge | 386 | mov [LFBAddress], eax |
387 | ret |
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388 | @@: |
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389 | test [SCR_MODE],word 0100000000000000b |
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390 | jnz @f |
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211 | serge | 391 | mov [0x2f0000+0x901c],byte 2 |
392 | ret |
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393 | @@: |
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394 | mov edx, LFB_BASE |
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378 | serge | 395 | mov esi, [LFBAddress] |
396 | mov edi, [LFBSize] |
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164 | serge | 397 | mov dword [exp_lfb+4], edx |
379 | serge | 398 | |
214 | serge | 399 | |
164 | serge | 400 | mov [pg_count], edi |
401 | shr edi, 10 |
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402 | |||
403 | |||
404 | jnc .map_page_tables |
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405 | or esi, PG_LARGE+PG_UW |
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406 | shr edx, 20 |
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378 | serge | 407 | mov ecx, edx |
408 | @@: |
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164 | serge | 409 | mov [sys_pgdir+edx], esi |
378 | serge | 410 | add edx, 4 |
411 | add esi, 0x00400000 |
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164 | serge | 412 | dec edi |
413 | jnz @B |
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414 | |||
415 | |||
207 | serge | 416 | jnc @F |
417 | or dword [sys_pgdir+ecx], PG_GLOBAL |
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164 | serge | 418 | @@: |
207 | serge | 419 | mov dword [LFBAddress], LFB_BASE |
378 | serge | 420 | mov eax, cr3 ;flush TLB |
164 | serge | 421 | mov cr3, eax |
422 | ret |
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423 | |||
424 | |||
425 | |||
426 | |||
427 | stdcall map_page_table, edx, eax |
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378 | serge | 428 | add edx, 0x00400000 |
389 | serge | 429 | dec edi |
164 | serge | 430 | jnz .map_page_tables |
389 | serge | 431 | |
164 | serge | 432 | |
433 | mov edi, page_tabs + (LFB_BASE shr 10) |
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378 | serge | 434 | or eax, PG_UW |
164 | serge | 435 | mov ecx, [pg_count] |
436 | cld |
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378 | serge | 437 | @@: |
389 | serge | 438 | stosd |
439 | add eax, 0x1000 |
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440 | dec ecx |
||
441 | jnz @B |
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442 | |||
164 | serge | 443 | |
378 | serge | 444 | mov eax, cr3 ;flush TLB |
164 | serge | 445 | mov cr3, eax |
446 | |||
447 | |||
448 | endp |
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449 | |||
450 | |||
451 | proc new_mem_resize stdcall, new_size:dword |
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452 | |||
453 | |||
276 | serge | 454 | call wait_mutex ;ebx |
455 | |||
164 | serge | 456 | |
457 | add edi,4095 |
||
458 | and edi,not 4095 |
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459 | mov [new_size], edi |
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460 | |||
461 | |||
462 | shl edx,8 |
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463 | cmp [SLOT_BASE+APPDATA.heap_base+edx],0 |
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380 | serge | 464 | jne .exit |
172 | serge | 465 | |
466 | |||
380 | serge | 467 | add esi, 4095 |
164 | serge | 468 | and esi, not 4095 |
469 | |||
470 | |||
471 | jae .expand |
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472 | |||
473 | |||
474 | shr esi, 12 |
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475 | @@: |
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476 | mov eax, [app_page_tabs+edi*4] |
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378 | serge | 477 | test eax, 1 |
164 | serge | 478 | jz .next |
479 | mov dword [app_page_tabs+edi*4], 2 |
||
378 | serge | 480 | mov ebx, edi |
164 | serge | 481 | shl ebx, 12 |
482 | invlpg [ebx+std_application_base_address] |
||
483 | call free_page |
||
484 | |||
485 | |||
486 | cmp edi, esi |
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487 | jb @B |
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488 | |||
489 | |||
490 | mov ebx, [new_size] |
||
294 | diamond | 491 | call update_mem_size |
492 | |||
164 | serge | 493 | |
494 | dec [pg_data.pg_mutex] |
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495 | ret |
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496 | |||
497 | |||
498 | add edi, new_app_base |
||
499 | add esi, new_app_base |
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500 | |||
501 | |||
502 | push edi |
||
503 | |||
504 | |||
505 | and edi, not(0x3FFFFF) |
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506 | add esi, 0x3FFFFF |
||
507 | and esi, not(0x3FFFFF) |
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508 | |||
509 | |||
510 | jae .grow |
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511 | |||
512 | |||
513 | |||
514 | |||
515 | call alloc_page |
||
516 | test eax, eax |
||
517 | jz .exit |
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518 | |||
519 | |||
188 | serge | 520 | |
164 | serge | 521 | |
522 | shr edi, 10 |
||
523 | add edi, page_tabs |
||
365 | serge | 524 | mov ecx, 1024 |
164 | serge | 525 | xor eax, eax |
526 | cld |
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527 | rep stosd |
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528 | pop edi |
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529 | |||
530 | |||
531 | cmp edi, esi |
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532 | jb @B |
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533 | .grow: |
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534 | pop edi |
||
535 | pop esi |
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536 | @@: |
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537 | call alloc_page |
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538 | test eax, eax |
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539 | jz .exit |
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540 | stdcall map_page,esi,eax,dword PG_UW |
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541 | |||
542 | |||
543 | mov edi, esi |
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544 | xor eax, eax |
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545 | mov ecx, 1024 |
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546 | cld |
||
547 | rep stosd |
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548 | pop edi |
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549 | |||
550 | |||
551 | cmp esi, edi |
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552 | jb @B |
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294 | diamond | 553 | |
164 | serge | 554 | |
555 | .exit: |
||
556 | xor eax, eax |
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557 | inc eax |
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558 | dec [pg_data.pg_mutex] |
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559 | ret |
||
560 | endp |
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561 | |||
562 | |||
294 | diamond | 563 | ; in: edx = slot shl 8 |
564 | ; ebx = new memory size |
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565 | ; destroys eax,ecx,edx |
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566 | |||
567 | |||
380 | serge | 568 | ;search threads and update |
294 | diamond | 569 | ;application memory size infomation |
570 | mov ecx,[SLOT_BASE+APPDATA.dir_table+edx] |
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380 | serge | 571 | mov eax,2 |
294 | diamond | 572 | |
573 | |||
574 | ;eax = current slot |
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575 | ;ebx = new memory size |
||
576 | ;ecx = page directory |
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577 | cmp eax,[TASK_COUNT] |
||
578 | jg .search_threads_end |
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579 | mov edx,eax |
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580 | shl edx,5 |
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581 | cmp word [CURRENT_TASK+edx+TASKDATA.state],9 ;if slot empty? |
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582 | jz .search_threads_next |
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583 | shl edx,3 |
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584 | cmp [SLOT_BASE+edx+APPDATA.dir_table],ecx ;if it is our thread? |
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380 | serge | 585 | jnz .search_threads_next |
294 | diamond | 586 | mov [SLOT_BASE+edx+APPDATA.mem_size],ebx ;update memory size |
380 | serge | 587 | .search_threads_next: |
294 | diamond | 588 | inc eax |
589 | jmp .search_threads |
||
590 | .search_threads_end: |
||
591 | ret |
||
592 | |||
593 | |||
285 | serge | 594 | ; eax= linear address |
595 | ; |
||
596 | ; retval |
||
597 | ; eax= phisical page address |
||
598 | |||
599 | |||
164 | serge | 600 | get_pg_addr: |
285 | serge | 601 | shr eax, 12 |
602 | mov eax, [page_tabs+eax*4] |
||
365 | serge | 603 | and eax, 0xFFFFF000 |
164 | serge | 604 | ret |
605 | |||
606 | |||
188 | serge | 607 | proc page_fault_handler |
164 | serge | 608 | pushad |
609 | |||
610 | |||
611 | mov eax, cr2 |
||
612 | push eax |
||
172 | serge | 613 | push ds |
164 | serge | 614 | push es |
188 | serge | 615 | |
164 | serge | 616 | |
617 | mov ds, ax |
||
618 | mov es, ax |
||
188 | serge | 619 | |
164 | serge | 620 | |
188 | serge | 621 | |
622 | |||
164 | serge | 623 | |
624 | |||
378 | serge | 625 | jae .user_space |
164 | serge | 626 | |
627 | |||
378 | serge | 628 | jae .alloc |
188 | serge | 629 | |
630 | |||
378 | serge | 631 | jae .tab_space |
164 | serge | 632 | |
633 | |||
378 | serge | 634 | jae .lfb_addr |
635 | |||
636 | |||
164 | serge | 637 | |
638 | |||
639 | shr ebx, 12 |
||
640 | mov ecx, ebx |
||
172 | serge | 641 | shr ecx, 10 |
642 | mov edx, [master_tab+ecx*4] |
||
643 | test edx, 1 |
||
644 | jz .fail |
||
645 | |||
646 | |||
365 | serge | 647 | test eax, 2 |
164 | serge | 648 | jz .fail |
172 | serge | 649 | .alloc: |
188 | serge | 650 | call alloc_page |
164 | serge | 651 | and eax, eax |
652 | jz .exit |
||
653 | |||
654 | |||
655 | |||
656 | |||
188 | serge | 657 | and edi, 0xFFFFF000 |
658 | mov ecx, 1024 |
||
164 | serge | 659 | xor eax, eax |
660 | cld |
||
188 | serge | 661 | rep stosd |
662 | .exit: |
||
164 | serge | 663 | pop es |
188 | serge | 664 | pop ds |
164 | serge | 665 | mov esp, ebp |
666 | popad |
||
667 | add esp, 4 |
||
668 | iretd |
||
669 | .fail: |
||
172 | serge | 670 | pop es |
188 | serge | 671 | pop ds |
172 | serge | 672 | mov esp, ebp |
673 | popad |
||
674 | add esp, 4 |
||
675 | |||
164 | serge | 676 | |
172 | serge | 677 | |
678 | |||
679 | jmp exc_c |
||
680 | iretd |
||
681 | |||
682 | |||
164 | serge | 683 | ; shr ebx, 12 |
188 | serge | 684 | ; mov eax, [page_tabs+ebx*4] |
365 | serge | 685 | ; shr ebx, 10 |
188 | serge | 686 | ; mov eax, [master_tab+ebx*4] |
687 | jmp .exit |
||
688 | .old_addr: |
||
164 | serge | 689 | ; shr ebx, 12 |
188 | serge | 690 | ; mov eax, [page_tabs+ebx*4] |
365 | serge | 691 | ; shr ebx, 10 |
188 | serge | 692 | ; mov eax, [master_tab+ebx*4] |
693 | jmp .exit |
||
694 | .lfb_addr: |
||
164 | serge | 695 | ; shr ebx, 22 |
188 | serge | 696 | ; ;mov ecx, [sys_page_dir] |
697 | ; mov eax, [master_tab+ebx*4] |
||
698 | jmp .exit |
||
699 | .tab_space: |
||
164 | serge | 700 | ; shr ebx, 12 |
188 | serge | 701 | ; mov eax, [page_tabs+ebx*4] |
365 | serge | 702 | ; shr ebx, 10 |
188 | serge | 703 | ; ;mov ecx, [sys_page_dir] |
704 | ; mov eax, [master_tab+ebx*4] |
||
705 | jmp .exit |
||
706 | endp |
||
164 | serge | 707 | |
708 | |||
709 | proc map_mem stdcall, lin_addr:dword,pdir:dword,\ |
||
710 | ofs:dword,buf_size:dword |
||
711 | mov eax, [buf_size] |
||
712 | test eax, eax |
||
713 | jz .exit |
||
714 | |||
715 | |||
716 | and eax, 0xFFFFF000 |
||
717 | |||
718 | |||
719 | mov ebx, [ofs] |
||
720 | shr ebx, 22 |
||
721 | mov esi, [ipc_pdir] |
||
722 | mov edi, [ipc_ptab] |
||
723 | mov eax, [esi+ebx*4] |
||
724 | and eax, 0xFFFFF000 |
||
725 | test eax, eax |
||
726 | jz .exit |
||
727 | stdcall map_page,edi,eax,dword PG_UW |
||
728 | ; inc ebx |
||
729 | ; add edi, 0x1000 |
||
730 | ; mov eax, [esi+ebx*4] |
||
731 | ; test eax, eax |
||
732 | ; jz @f |
||
733 | ; and eax, 0xFFFFF000 |
||
734 | ; stdcall map_page, edi, eax |
||
735 | |||
736 | |||
737 | and edi, 0xFFFFF000 |
||
738 | mov ecx, [buf_size] |
||
739 | add ecx, 4095 |
||
740 | shr ecx, 12 |
||
741 | inc ecx |
||
742 | |||
743 | |||
744 | shr edx, 12 |
||
745 | and edx, 0x3FF |
||
746 | mov esi, [ipc_ptab] |
||
747 | |||
748 | |||
749 | and eax, 0xFFFFF000 |
||
750 | test eax, eax |
||
751 | jz .exit |
||
752 | stdcall map_page,edi,eax,dword PG_UW |
||
753 | add edi, 0x1000 |
||
754 | inc edx |
||
755 | dec ecx |
||
756 | jnz .map |
||
757 | |||
758 | |||
759 | ret |
||
760 | endp |
||
761 | |||
762 | |||
763 | proc map_memEx stdcall, lin_addr:dword,pdir:dword,\ |
||
764 | ofs:dword,buf_size:dword |
||
765 | mov eax, [buf_size] |
||
766 | test eax, eax |
||
767 | jz .exit |
||
768 | |||
769 | |||
770 | and eax, 0xFFFFF000 |
||
771 | |||
772 | |||
773 | mov ebx, [ofs] |
||
774 | shr ebx, 22 |
||
775 | mov esi, [proc_mem_pdir] |
||
776 | mov edi, [proc_mem_tab] |
||
777 | mov eax, [esi+ebx*4] |
||
778 | and eax, 0xFFFFF000 |
||
779 | test eax, eax |
||
780 | jz .exit |
||
781 | stdcall map_page,edi,eax,dword PG_UW |
||
782 | |||
783 | |||
784 | and edi, 0xFFFFF000 |
||
785 | mov ecx, [buf_size] |
||
786 | add ecx, 4095 |
||
787 | shr ecx, 12 |
||
788 | inc ecx |
||
789 | |||
790 | |||
791 | shr edx, 12 |
||
792 | and edx, 0x3FF |
||
793 | mov esi, [proc_mem_tab] |
||
794 | |||
795 | |||
796 | ; and eax, 0xFFFFF000 |
||
797 | ; test eax, eax |
||
798 | ; jz .exit |
||
799 | stdcall map_page,edi,eax,dword PG_UW |
||
800 | add edi, 0x1000 |
||
801 | inc edx |
||
802 | dec ecx |
||
803 | jnz .map |
||
804 | .exit: |
||
805 | ret |
||
806 | endp |
||
807 | |||
808 | |||
809 | |||
810 | |||
811 | |||
812 | ;input: |
||
813 | ; eax=1 - set ipc buffer area |
||
814 | ; ebx=address of buffer |
||
815 | ; ecx=size of buffer |
||
816 | ; eax=2 - send message |
||
817 | ; ebx=PID |
||
818 | ; ecx=address of message |
||
819 | ; edx=size of message |
||
820 | |||
821 | |||
822 | jne @f |
||
823 | call set_ipc_buff |
||
824 | mov [esp+36], eax |
||
825 | ret |
||
826 | @@: |
||
827 | cmp eax, 2 |
||
828 | jne @f |
||
829 | stdcall sys_ipc_send, ebx, ecx, edx |
||
830 | mov [esp+36], eax |
||
831 | ret |
||
832 | @@: |
||
833 | xor eax, eax |
||
834 | not eax |
||
835 | mov [esp+36], eax |
||
836 | ret |
||
837 | |||
838 | |||
839 | proc set_ipc_buff |
||
840 | |||
841 | |||
842 | shl eax,8 |
||
843 | add eax, SLOT_BASE |
||
380 | serge | 844 | pushf |
164 | serge | 845 | cli |
846 | mov [eax+0xA0],ebx ;set fields in extended information area |
||
847 | mov [eax+0xA4],ecx |
||
848 | |||
849 | |||
850 | add ecx, ebx |
||
851 | add ecx, 4095 |
||
852 | and ecx, not 4095 |
||
853 | |||
854 | |||
855 | add ebx, 0x1000 |
||
856 | cmp ebx, ecx |
||
857 | jna .touch |
||
858 | |||
859 | |||
860 | xor eax, eax |
||
861 | ret |
||
862 | endp |
||
863 | |||
864 | |||
865 | locals |
||
866 | dst_slot dd ? |
||
867 | dst_offset dd ? |
||
868 | buf_size dd ? |
||
869 | endl |
||
870 | |||
871 | |||
872 | cli |
||
873 | |||
874 | |||
875 | call pid_to_slot |
||
876 | test eax,eax |
||
877 | jz .no_pid |
||
878 | |||
879 | |||
880 | shl eax,8 |
||
881 | mov edi,[eax+SLOT_BASE+0xa0] ;is ipc area defined? |
||
380 | serge | 882 | test edi,edi |
164 | serge | 883 | jz .no_ipc_area |
884 | |||
885 | |||
886 | add edi, new_app_base |
||
887 | and ebx, 0xFFF |
||
888 | mov [dst_offset], ebx |
||
889 | |||
890 | |||
380 | serge | 891 | mov [buf_size], esi |
164 | serge | 892 | |
893 | |||
380 | serge | 894 | edi, esi |
164 | serge | 895 | |
896 | |||
897 | add edi, [ipc_tmp] |
||
898 | cmp dword [edi], 0 |
||
899 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
900 | |||
227 | serge | 901 | |
164 | serge | 902 | mov edx, ebx |
903 | add ebx, 8 |
||
904 | add ebx, [msg_size] |
||
905 | cmp ebx, [buf_size] |
||
906 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
907 | |||
227 | serge | 908 | |
164 | serge | 909 | mov eax,[TASK_BASE] |
910 | mov eax, [eax+0x04] ;eax - our PID |
||
911 | mov edi, [dst_offset] |
||
912 | add edi, [ipc_tmp] |
||
913 | add edi, edx |
||
914 | mov [edi], eax |
||
915 | mov ecx, [msg_size] |
||
916 | |||
917 | |||
918 | add edi, 8 |
||
919 | mov esi, [msg_addr] |
||
920 | add esi, new_app_base |
||
921 | cld |
||
922 | rep movsb |
||
923 | |||
924 | |||
925 | mov edx, ebx |
||
926 | shr ebx, 12 |
||
927 | xor eax, eax |
||
928 | mov [page_tabs+ebx*4], eax |
||
365 | serge | 929 | invlpg [edx] |
164 | serge | 930 | |
931 | |||
932 | mov edx, ebx |
||
933 | shr ebx, 12 |
||
934 | xor eax, eax |
||
935 | mov [page_tabs+ebx*4], eax |
||
365 | serge | 936 | invlpg [edx] |
164 | serge | 937 | |
938 | |||
939 | mov edx, ebx |
||
940 | shr ebx, 12 |
||
941 | xor eax, eax |
||
942 | mov [page_tabs+ebx*4], eax |
||
365 | serge | 943 | invlpg [edx] |
164 | serge | 944 | |
945 | |||
946 | shl eax, 8 |
||
947 | or [eax+SLOT_BASE+0xA8],dword 0x40 |
||
380 | serge | 948 | cmp dword [check_idle_semaphore],20 |
164 | serge | 949 | jge .ipc_no_cis |
950 | |||
951 | |||
952 | .ipc_no_cis: |
||
953 | popf |
||
954 | xor eax, eax |
||
955 | ret |
||
956 | .no_pid: |
||
957 | popf |
||
958 | mov eax, 4 |
||
959 | ret |
||
960 | .no_ipc_area: |
||
961 | popf |
||
962 | xor eax, eax |
||
963 | inc eax |
||
964 | ret |
||
965 | .ipc_blocked: |
||
966 | popf |
||
967 | mov eax, 2 |
||
968 | ret |
||
969 | .buffer_overflow: |
||
970 | popf |
||
971 | mov eax, 3 |
||
972 | ret |
||
973 | endp |
||
974 | |||
975 | |||
976 | sysfn_meminfo: |
||
170 | serge | 977 | |
164 | serge | 978 | |
170 | serge | 979 | cmp ebx, new_app_base |
172 | serge | 980 | jb .fail |
981 | |||
982 | |||
164 | serge | 983 | mov [ebx], eax |
170 | serge | 984 | shl eax, 12 |
172 | serge | 985 | mov [esp+36], eax |
986 | mov ecx, [pg_data.pages_free] |
||
170 | serge | 987 | mov [ebx+4], ecx |
988 | mov edx, [pg_data.pages_faults] |
||
989 | mov [ebx+8], edx |
||
990 | mov esi, [heap_size] |
||
991 | mov [ebx+12], esi |
||
992 | mov edi, [heap_free] |
||
993 | mov [ebx+16], edi |
||
994 | mov eax, [heap_blocks] |
||
995 | mov [ebx+20], eax |
||
996 | mov ecx, [free_blocks] |
||
997 | mov [ebx+24], ecx |
||
998 | ret |
||
164 | serge | 999 | .fail: |
172 | serge | 1000 | mov dword [esp+36], -1 |
1001 | ret |
||
1002 | |||
164 | serge | 1003 | |
1004 | new_services: |
||
1005 | |||
1006 | |||
1007 | jle sys_sheduler |
||
1008 | |||
1009 | |||
170 | serge | 1010 | jb .fail |
164 | serge | 1011 | ja @f |
1012 | |||
1013 | |||
188 | serge | 1014 | mov [esp+36], eax |
164 | serge | 1015 | ret |
1016 | @@: |
||
1017 | cmp eax, 12 |
||
1018 | ja @f |
||
1019 | |||
1020 | |||
1021 | mov [esp+36], eax |
||
1022 | ret |
||
1023 | @@: |
||
1024 | cmp eax, 13 |
||
1025 | ja @f |
||
1026 | add ebx, new_app_base |
||
188 | serge | 1027 | stdcall user_free, ebx |
164 | serge | 1028 | mov [esp+36], eax |
1029 | ret |
||
1030 | @@: |
||
1031 | cmp eax, 14 |
||
1032 | ja @f |
||
1033 | add ebx, new_app_base |
||
227 | serge | 1034 | cmp ebx, new_app_base |
172 | serge | 1035 | jb .fail |
1036 | stdcall get_event_ex, ebx, ecx |
||
227 | serge | 1037 | mov [esp+36], eax |
1038 | ret |
||
164 | serge | 1039 | @@: |
1040 | cmp eax, 15 |
||
1041 | ja @f |
||
1042 | mov ecx, [CURRENT_TASK] |
||
1043 | shl ecx, 8 |
||
1044 | mov eax, [ecx+SLOT_BASE+APPDATA.fpu_handler] |
||
380 | serge | 1045 | mov [ecx+SLOT_BASE+APPDATA.fpu_handler], ebx |
1046 | mov [esp+36], eax |
||
164 | serge | 1047 | ret |
1048 | @@: |
||
1049 | cmp eax, 16 |
||
1050 | ja @f |
||
1051 | |||
1052 | |||
188 | serge | 1053 | jz .fail |
1054 | add ebx, new_app_base |
||
164 | serge | 1055 | cmp ebx, new_app_base |
172 | serge | 1056 | jb .fail |
1057 | stdcall get_service, ebx |
||
164 | serge | 1058 | mov [esp+36], eax |
1059 | ret |
||
1060 | @@: |
||
1061 | cmp eax, 17 |
||
1062 | ja @f |
||
1063 | call srv_handlerEx ;ebx |
||
378 | serge | 1064 | mov [esp+36], eax |
164 | serge | 1065 | ret |
1066 | @@: |
||
168 | serge | 1067 | cmp eax, 18 |
1068 | ja @f |
||
1069 | mov ecx, [CURRENT_TASK] |
||
1070 | shl ecx, 8 |
||
1071 | mov eax, [ecx+SLOT_BASE+APPDATA.sse_handler] |
||
380 | serge | 1072 | mov [ecx+SLOT_BASE+APPDATA.sse_handler], ebx |
1073 | mov [esp+36], eax |
||
168 | serge | 1074 | ret |
1075 | @@: |
||
164 | serge | 1076 | cmp eax, 19 |
198 | serge | 1077 | ja .fail |
227 | serge | 1078 | add ebx, new_app_base |
198 | serge | 1079 | cmp ebx, new_app_base |
1080 | jb .fail |
||
1081 | stdcall load_library, ebx |
||
1082 | mov [esp+36], eax |
||
1083 | ret |
||
1084 | |||
227 | serge | 1085 | |
164 | serge | 1086 | xor eax, eax |
1087 | mov [esp+36], eax |
||
1088 | ret |
||
1089 | |||
1090 | |||
1091 | proc strncmp stdcall, str1:dword, str2:dword, count:dword |
||
1092 | |||
1093 | |||
1094 | jecxz .end |
||
1095 | |||
1096 | |||
1097 | |||
1098 | |||
1099 | mov esi,edi |
||
1100 | xor eax,eax |
||
1101 | repne scasb |
||
1102 | neg ecx ; cx = count - strlen |
||
1103 | add ecx,ebx ; strlen + count - strlen |
||
1104 | |||
1105 | |||
1106 | mov edi,esi |
||
1107 | mov esi,[str2] |
||
1108 | repe cmpsb |
||
1109 | mov al,[esi-1] |
||
1110 | xor ecx,ecx |
||
1111 | |||
1112 | |||
1113 | ja .str2_big |
||
1114 | je .end |
||
1115 | |||
1116 | |||
1117 | sub ecx,2 |
||
1118 | |||
1119 | |||
1120 | not ecx |
||
1121 | .end: |
||
1122 | mov eax,ecx |
||
1123 | ret |
||
1124 | endp |
||
1125 | |||
1126 | |||
1127 | proc test_cpu |
||
1128 | locals |
||
1129 | cpu_type dd ? |
||
166 | serge | 1130 | cpu_id dd ? |
1131 | cpu_Intel dd ? |
||
1132 | cpu_AMD dd ? |
||
1133 | endl |
||
164 | serge | 1134 | |
1135 | |||
1136 | xor eax, eax |
||
211 | serge | 1137 | mov [cpu_caps], eax |
1138 | mov [cpu_caps+4], eax |
||
1139 | |||
164 | serge | 1140 | |
1141 | pop eax |
||
1142 | mov ecx, eax |
||
1143 | xor eax, 0x40000 |
||
1144 | push eax |
||
1145 | popfd |
||
1146 | pushfd |
||
1147 | pop eax |
||
1148 | xor eax, ecx |
||
1149 | mov [cpu_type], CPU_386 |
||
1150 | jz .end_cpuid |
||
221 | serge | 1151 | push ecx |
164 | serge | 1152 | popfd |
1153 | |||
1154 | |||
1155 | mov eax, ecx |
||
1156 | xor eax, 0x200000 |
||
1157 | push eax |
||
1158 | popfd |
||
1159 | pushfd |
||
1160 | pop eax |
||
1161 | xor eax, ecx |
||
1162 | je .end_cpuid |
||
221 | serge | 1163 | mov [cpu_id], 1 |
164 | serge | 1164 | |
1165 | |||
1166 | cpuid |
||
1167 | mov [cpu_vendor], ebx |
||
1168 | mov [cpu_vendor+4], edx |
||
1169 | mov [cpu_vendor+8], ecx |
||
1170 | cmp ebx, dword [intel_str] |
||
1171 | jne .check_AMD |
||
1172 | cmp edx, dword [intel_str+4] |
||
1173 | jne .check_AMD |
||
1174 | cmp ecx, dword [intel_str+8] |
||
1175 | jne .check_AMD |
||
1176 | mov [cpu_Intel], 1 |
||
1177 | cmp eax, 1 |
||
1178 | jl .end_cpuid |
||
1179 | mov eax, 1 |
||
1180 | cpuid |
||
1181 | mov [cpu_sign], eax |
||
1182 | mov [cpu_info], ebx |
||
1183 | mov [cpu_caps], edx |
||
1184 | mov [cpu_caps+4],ecx |
||
1185 | |||
1186 | |||
1187 | and eax, 0x0f |
||
1188 | ret |
||
1189 | .end_cpuid: |
||
1190 | mov eax, [cpu_type] |
||
1191 | ret |
||
1192 | |||
1193 | |||
1194 | cmp ebx, dword [AMD_str] |
||
1195 | jne .unknown |
||
221 | serge | 1196 | cmp edx, dword [AMD_str+4] |
164 | serge | 1197 | jne .unknown |
221 | serge | 1198 | cmp ecx, dword [AMD_str+8] |
164 | serge | 1199 | jne .unknown |
221 | serge | 1200 | mov [cpu_AMD], 1 |
164 | serge | 1201 | cmp eax, 1 |
1202 | jl .unknown |
||
221 | serge | 1203 | mov eax, 1 |
164 | serge | 1204 | cpuid |
1205 | mov [cpu_sign], eax |
||
1206 | mov [cpu_info], ebx |
||
1207 | mov [cpu_caps], edx |
||
1208 | mov [cpu_caps+4],ecx |
||
1209 | shr eax, 8 |
||
1210 | and eax, 0x0f |
||
1211 | ret |
||
1212 | .unknown: |
||
221 | serge | 1213 | mov eax, 1 |
1214 | cpuid |
||
1215 | mov [cpu_sign], eax |
||
1216 | mov [cpu_info], ebx |
||
1217 | mov [cpu_caps], edx |
||
1218 | mov [cpu_caps+4],ecx |
||
1219 | shr eax, 8 |
||
1220 | and eax, 0x0f |
||
1221 | ret |
||
1222 | endp |
||
164 | serge | 1223 | |
1224 | |||
1225 | MEM_WC equ 1 ;write combined memory |
||
1226 | MEM_UC equ 0 ;uncached memory |
||
1227 | |||
1228 | |||
1229 | proc init_mtrr |
||
1230 | |||
1231 | |||
1232 | je .exit |
||
1233 | |||
1234 | |||
211 | serge | 1235 | jnc .exit |
1236 | |||
1237 | |||
164 | serge | 1238 | or eax, 0x60000000 ;disable caching |
1239 | mov cr0, eax |
||
1240 | wbinvd ;invalidate cache |
||
1241 | |||
1242 | |||
1243 | rdmsr ; |
||
1244 | push eax |
||
1245 | |||
1246 | |||
1247 | xor eax, eax |
||
1248 | mov ecx, 0x2FF |
||
1249 | wrmsr ;disable all MTRR |
||
1250 | |||
1251 | |||
1252 | stdcall set_mtrr, dword 1,[LFBAddress],[LFBSize],MEM_WC |
||
1253 | xor edx, edx |
||
1254 | xor eax, eax |
||
1255 | mov ecx, 0x204 |
||
1256 | mov ebx, 6 |
||
1257 | @@: |
||
1258 | wrmsr ;disable unused MTRR |
||
1259 | inc ecx |
||
1260 | wrmsr |
||
1261 | inc ecx |
||
1262 | dec ebx |
||
1263 | jnz @b |
||
1264 | |||
1265 | |||
1266 | |||
1267 | |||
1268 | or eax, 0x800 ;set default memtype to UC |
||
1269 | and al, 0xF0 |
||
1270 | mov ecx, 0x2FF |
||
1271 | wrmsr ;and enable MTRR |
||
1272 | |||
1273 | |||
1274 | and eax, not 0x60000000 |
||
1275 | mov cr0, eax ; enable caching |
||
1276 | .exit: |
||
1277 | ret |
||
1278 | endp |
||
1279 | |||
1280 | |||
1281 | proc set_mtrr stdcall, reg:dword,base:dword,size:dword,mem_type:dword |
||
1282 | |||
1283 | |||
1284 | mov eax, [base] |
||
1285 | or eax, [mem_type] |
||
1286 | mov ecx, [reg] |
||
1287 | lea ecx, [0x200+ecx*2] |
||
1288 | wrmsr |
||
1289 | |||
1290 | |||
1291 | dec ebx |
||
1292 | mov eax, 0xFFFFFFFF |
||
1293 | mov edx, 0x0000000F |
||
1294 | sub eax, ebx |
||
1295 | sbb edx, 0 |
||
1296 | or eax, 0x800 |
||
1297 | inc ecx |
||
1298 | wrmsr |
||
1299 | ret |
||
1300 | endp |
||
1301 | |||
1302 | |||
172 | serge | 1303 | proc stall stdcall, delay:dword |
1304 | push ecx |
||
1305 | push edx |
||
1306 | push ebx |
||
1307 | push eax |
||
1308 | |||
1309 | |||
1310 | mul [stall_mcs] |
||
1311 | mov ebx, eax ;low |
||
1312 | mov ecx, edx ;high |
||
1313 | rdtsc |
||
1314 | add ebx, eax |
||
1315 | adc ecx,edx |
||
1316 | @@: |
||
1317 | rdtsc |
||
1318 | sub eax, ebx |
||
1319 | sbb edx, ecx |
||
1320 | jb @B |
||
1321 | |||
1322 | |||
1323 | pop ebx |
||
1324 | pop edx |
||
1325 | pop ecx |
||
1326 | ret |
||
1327 | endp |
||
1328 | |||
1329 | |||
164 | serge | 1330 | align 4 |
1331 | intel_str db "GenuineIntel",0 |
||
1332 | AMD_str db "AuthenticAMD",0 |
||
1333 | endg |
||
1334 | |||
1335 | |||
1336 | align 16 |
||
1337 | irq_tab rd 16 |
||
1338 | |||
1339 | |||
1340 | |||
1341 | |||
1342 | ipc_pdir rd 1 |
||
1343 | ipc_ptab rd 1 |
||
1344 | |||
1345 | |||
1346 | proc_mem_pdir rd 1 |
||
1347 | proc_mem_tab rd 1 |
||
1348 | |||
1349 | |||
1350 | tmp_task_ptab rd 1 |
||
1351 | |||
1352 | |||
1353 | LFBSize rd 1 |
||
214 | serge | 1354 | |
164 | serge | 1355 | |
172 | serge | 1356 | ;;CPUID information |
164 | serge | 1357 | |
1358 | |||
1359 | cpu_sign rd 1 |
||
1360 | cpu_info rd 1 |
||
1361 | |||
1362 | |||
221 | serge | 1363 | |
1364 | |||
1365 | cur_saved_data rb 4096 |
||
1366 | |||
1367 | |||
1368 | hw_cursor rd 1 |
||
233 | serge | 1369 | |
221 | serge | 1370 | |
1371 | scr_height rd 1 |
||
1372 | |||
1373 | |||
1374 | cur_saved_base rd 1 |
||
1375 | cur_saved_interl rd 1 |
||
1376 | cur_saved_w rd 1 |
||
1377 | cur_saved_h rd 1 |
||
1378 | |||
1379 | |||
164 | serge | 1380 | |
1381 | |||
1382 | align 16 |
||
1383 | fpu_data: |
||
357 | serge | 1384 | rb 512 |
1385 | |||
227 | serge | 1386 | |
276 | serge | 1387 | |
1388 | |||
227 | serge | 1389 | event_map rb 64 |
354 | serge | 1390 | mem_block_list rd 64 |
227 | serge | 1391 | mem_block_mask rd 2 |
1392 | |||
1393 | |||
278 | serge | 1394 | srv.bk rd 1 |
1395 | |||
1396 | |||
357 | serge | 1397 | mem_used.bk rd 1 |
1398 | |||
1399 | |||
164 | serge | 1400 | mem_block_start rd 1 |
1401 | mem_block_end rd 1 |
||
1402 | |||
279 | serge | 1403 | |
1404 | heap_size rd 1 |
||
170 | serge | 1405 | heap_free rd 1 |
1406 | heap_blocks rd 1 |
||
1407 | free_blocks rd 1 |
||
1408 | |||
164 | serge | 1409 | |
1410 | page_end rd 1 |
||
1411 | events rd 1 |
||
227 | serge | 1412 | event_start rd 1 |
1413 | event_end rd 1 |
||
1414 | event_uid rd 1 |
||
354 | serge | 1415 | sys_page_map rd 1 |
164 | serge | 1416 | os_stack rd 1 |
357 | serge | 1417 | endg |
164 | serge | 1418 | |
1419 | |||
328 | serge | 1420 | push eax |
1421 | push edx |
||
1422 | mov edx, 0x400 ;bocsh |
||
1423 | mov al,0xff ;bocsh |
||
1424 | out dx, al ;bocsh |
||
1425 | pop edx |
||
1426 | pop eax |
||
1427 | end if |
||
1428 | |||
164 | serge | 1429 | |
237 | serge | 1430 | k_strrchr: |
1431 | push eax |
||
1432 | xor eax,eax |
||
1433 | or ecx,-1 |
||
1434 | repne scasb |
||
1435 | add ecx,1 |
||
1436 | neg ecx |
||
1437 | sub edi,1 |
||
1438 | pop eax |
||
1439 | std |
||
1440 | repne scasb |
||
1441 | cld |
||
1442 | add edi,1 |
||
1443 | |||
1444 | |||
1445 | jne @F |
||
1446 | mov eax,edi |
||
1447 | ret |
||
1448 | @@: |
||
1449 | xor eax,eax |
||
1450 | ret |
||
1451 | |||
1452 | |||
1453 | proc k_strncpy stdcall, dest:dword, src:dword, maxlen:dword |
||
1454 | mov eax, [dest] |
||
1455 | mov esi, [src] |
||
1456 | mov ecx, [maxlen] |
||
1457 | test eax, eax |
||
1458 | jz .L9 |
||
1459 | test esi, esi |
||
1460 | jz .L9 |
||
1461 | test ecx, ecx |
||
1462 | jz .L9 |
||
1463 | |||
1464 | |||
1465 | jmp .L1 |
||
1466 | |||
1467 | |||
1468 | .L2: |
||
1469 | mov edx, [esi+eax] |
||
1470 | mov [eax], dl |
||
1471 | test dl, dl |
||
1472 | jz .L7 |
||
1473 | |||
1474 | |||
1475 | test dh, dh |
||
1476 | jz .L6 |
||
1477 | |||
1478 | |||
1479 | mov [eax+2],dl |
||
1480 | test dl, dl |
||
1481 | jz .L5 |
||
1482 | |||
1483 | |||
1484 | test dh, dh |
||
1485 | jz .L4 |
||
1486 | add eax, 4 |
||
1487 | .L1: |
||
1488 | sub ecx, 4 |
||
1489 | jae .L2 |
||
1490 | |||
1491 | |||
1492 | jz .L9 |
||
1493 | |||
1494 | |||
1495 | mov [eax], dl |
||
1496 | test dl, dl |
||
1497 | jz .L3 |
||
1498 | |||
1499 | |||
1500 | dec ecx |
||
1501 | jz .L9 |
||
1502 | |||
1503 | |||
1504 | mov [eax], dl |
||
1505 | test dl, dl |
||
1506 | jz .L3 |
||
1507 | |||
1508 | |||
1509 | dec ecx |
||
1510 | jz .L9 |
||
1511 | |||
1512 | |||
1513 | mov [eax], dl |
||
1514 | test dl, dl |
||
1515 | jz .L3 |
||
1516 | |||
1517 | |||
1518 | jmp .L9 |
||
1519 | |||
1520 | |||
1521 | inc eax |
||
1522 | |||
1523 | |||
1524 | inc eax |
||
1525 | |||
1526 | |||
1527 | inc eax |
||
1528 | .L7: |
||
1529 | add ecx,3 |
||
1530 | jz .L9 |
||
1531 | .L8: |
||
1532 | mov byte [ecx+eax], 0 |
||
1533 | .L3: |
||
1534 | dec ecx |
||
1535 | jnz .L8 |
||
1536 | .L9: |
||
1537 | ret |
||
1538 | endp |
||
1539 | |||
1540 | |||
1541 | |||
1542 | |||
1543 | |||
1544 | |||
1545 | mov eax,[esp+4] |
||
1546 | mov edx, 3 |
||
1547 | |||
1548 | |||
1549 | jz .L1 |
||
1550 | jp .L0 |
||
1551 | |||
1552 | |||
1553 | je .L2 |
||
1554 | |||
1555 | |||
1556 | cmp dh, byte [eax] |
||
1557 | |||
1558 | |||
1559 | |||
1560 | |||
1561 | xor edx, 2 |
||
1562 | |||
1563 | |||
1564 | .L0: |
||
1565 | cmp dh, [eax] |
||
1566 | je .L2 |
||
1567 | |||
1568 | |||
1569 | xor edx, edx |
||
1570 | |||
1571 | |||
1572 | mov ecx, [eax] |
||
1573 | add eax, 4 |
||
1574 | |||
1575 | |||
1576 | add ecx, magic |
||
1577 | |||
1578 | |||
1579 | jnc .L3 |
||
1580 | |||
1581 | |||
1582 | and edx, not magic |
||
1583 | jne .L3 |
||
1584 | |||
1585 | |||
1586 | add eax, 4 |
||
1587 | |||
1588 | |||
1589 | add ecx, magic |
||
1590 | dec edx |
||
1591 | jnc .L3 |
||
1592 | |||
1593 | |||
1594 | and edx, not magic |
||
1595 | jne .L3 |
||
1596 | |||
1597 | |||
1598 | add eax, 4 |
||
1599 | |||
1600 | |||
1601 | add ecx, magic |
||
1602 | |||
1603 | |||
1604 | jnc .L3 |
||
1605 | |||
1606 | |||
1607 | |||
1608 | |||
1609 | jne .L3 |
||
1610 | |||
1611 | |||
1612 | add eax, 4 |
||
1613 | |||
1614 | |||
1615 | add ecx, magic |
||
1616 | |||
1617 | |||
1618 | jnc .L3 |
||
1619 | |||
1620 | |||
1621 | |||
1622 | |||
1623 | je .L1 |
||
1624 | |||
1625 | |||
1626 | sub ecx, magic |
||
1627 | |||
1628 | |||
1629 | jz .L2 |
||
1630 | |||
1631 | |||
1632 | test ch, ch |
||
1633 | jz .L2 |
||
1634 | |||
1635 | |||
1636 | inc eax |
||
1637 | |||
1638 | |||
1639 | jz .L2 |
||
1640 | |||
1641 | |||
1642 | |||
1643 | |||
1644 | sub eax, [esp+4] |
||
1645 | ret |
||
1646 | |||
1647 | |||
1648 |