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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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164 | serge | 7 | |
593 | mikedld | 8 | $Revision: 741 $ |
9 | |||
10 | |||
164 | serge | 11 | align 4 |
12 | proc alloc_page |
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13 | |||
14 | pushfd |
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15 | cli |
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660 | serge | 16 | push ebx |
164 | serge | 17 | mov ebx, [page_start] |
18 | mov ecx, [page_end] |
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19 | .l1: |
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20 | bsf eax,[ebx]; |
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21 | jnz .found |
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22 | add ebx,4 |
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23 | cmp ebx, ecx |
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24 | jb .l1 |
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660 | serge | 25 | pop ebx |
164 | serge | 26 | popfd |
27 | xor eax,eax |
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28 | ret |
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29 | .found: |
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30 | btr [ebx], eax |
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31 | mov [page_start],ebx |
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32 | sub ebx, sys_pgmap |
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254 | serge | 33 | lea eax, [eax+ebx*8] |
164 | serge | 34 | shl eax, 12 |
35 | dec [pg_data.pages_free] |
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660 | serge | 36 | pop ebx |
164 | serge | 37 | popfd |
38 | ret |
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39 | endp |
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40 | |||
41 | align 4 |
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42 | proc alloc_pages stdcall, count:dword |
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43 | pushfd |
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660 | serge | 44 | push ebx |
45 | push edi |
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164 | serge | 46 | cli |
47 | mov eax, [count] |
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48 | add eax, 7 |
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49 | shr eax, 3 |
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50 | mov [count], eax |
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51 | cmp eax, [pg_data.pages_free] |
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52 | ja .fail |
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53 | |||
54 | mov ecx, [page_start] |
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55 | mov ebx, [page_end] |
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56 | .find: |
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57 | mov edx, [count] |
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58 | mov edi, ecx |
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59 | .match: |
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60 | cmp byte [ecx], 0xFF |
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61 | jne .next |
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62 | dec edx |
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63 | jz .ok |
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64 | inc ecx |
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65 | cmp ecx,ebx |
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66 | jb .match |
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660 | serge | 67 | .fail: |
68 | xor eax, eax |
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69 | pop edi |
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70 | pop ebx |
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164 | serge | 71 | popfd |
72 | ret |
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73 | .next: |
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74 | inc ecx |
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75 | cmp ecx, ebx |
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76 | jb .find |
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660 | serge | 77 | pop edi |
78 | pop ebx |
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164 | serge | 79 | popfd |
80 | xor eax, eax |
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81 | ret |
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82 | .ok: |
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83 | sub ecx, edi |
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84 | inc ecx |
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663 | serge | 85 | push esi |
164 | serge | 86 | mov esi, edi |
87 | xor eax, eax |
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88 | rep stosb |
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89 | sub esi, sys_pgmap |
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90 | shl esi, 3+12 |
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91 | mov eax, esi |
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92 | mov ebx, [count] |
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93 | shl ebx, 3 |
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94 | sub [pg_data.pages_free], ebx |
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663 | serge | 95 | pop esi |
660 | serge | 96 | pop edi |
97 | pop ebx |
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164 | serge | 98 | popfd |
99 | ret |
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100 | endp |
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101 | |||
102 | align 4 |
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103 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
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321 | diamond | 104 | push ebx |
164 | serge | 105 | mov eax, [phis_addr] |
106 | and eax, not 0xFFF |
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107 | or eax, [flags] |
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108 | mov ebx, [lin_addr] |
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109 | shr ebx, 12 |
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365 | serge | 110 | mov [page_tabs+ebx*4], eax |
164 | serge | 111 | mov eax, [lin_addr] |
112 | invlpg [eax] |
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321 | diamond | 113 | pop ebx |
164 | serge | 114 | ret |
115 | endp |
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116 | |||
117 | align 4 |
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281 | serge | 118 | map_space: ;not implemented |
119 | |||
120 | |||
121 | ret |
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122 | |||
123 | |||
124 | align 4 |
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164 | serge | 125 | proc free_page |
126 | ;arg: eax page address |
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127 | pushfd |
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128 | cli |
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129 | shr eax, 12 ;page index |
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448 | diamond | 130 | bts dword [sys_pgmap], eax ;that's all! |
291 | serge | 131 | cmc |
328 | serge | 132 | adc [pg_data.pages_free], 0 |
164 | serge | 133 | shr eax, 3 |
134 | and eax, not 3 ;dword offset from page_map |
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448 | diamond | 135 | add eax, sys_pgmap |
164 | serge | 136 | cmp [page_start], eax |
137 | ja @f |
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138 | popfd |
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139 | ret |
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140 | @@: |
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141 | mov [page_start], eax |
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142 | popfd |
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143 | ret |
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144 | endp |
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145 | |||
741 | serge | 146 | proc map_io_mem stdcall, base:dword, size:dword, flags:dword |
147 | |||
148 | push ebx |
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149 | push edi |
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150 | mov eax, [size] |
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151 | add eax, 4095 |
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152 | and eax, -4096 |
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153 | mov [size], eax |
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154 | stdcall alloc_kernel_space, eax |
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155 | test eax, eax |
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156 | jz .fail |
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157 | push eax |
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158 | |||
159 | mov edi, 0x1000 |
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160 | mov ebx, eax |
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161 | mov ecx,[size] |
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162 | mov edx, [base] |
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163 | shr eax, 12 |
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164 | shr ecx, 12 |
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165 | and edx, -4096 |
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166 | or edx, [flags] |
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167 | @@: |
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168 | mov [page_tabs+eax*4], edx |
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169 | invlpg [ebx] |
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170 | inc eax |
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171 | add ebx, edi |
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172 | add edx, edi |
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173 | loop @B |
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174 | |||
175 | pop eax |
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176 | mov edx, [base] |
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177 | and edx, 4095 |
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178 | add eax, edx |
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179 | .fail: |
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180 | pop edi |
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181 | pop ebx |
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182 | ret |
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183 | endp |
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184 | |||
279 | serge | 185 | ; param |
328 | serge | 186 | ; eax= page base + page flags |
281 | serge | 187 | ; ebx= liear address |
188 | ; ecx= count |
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189 | |||
190 | align 4 |
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328 | serge | 191 | commit_pages: |
741 | serge | 192 | push edi |
328 | serge | 193 | test ecx, ecx |
194 | jz .fail |
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281 | serge | 195 | |
328 | serge | 196 | mov edi, ebx |
197 | mov ebx, pg_data.pg_mutex |
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198 | call wait_mutex ;ebx |
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199 | |||
200 | mov edx, 0x1000 |
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201 | mov ebx, edi |
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202 | shr ebx, 12 |
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203 | @@: |
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365 | serge | 204 | mov [page_tabs+ebx*4], eax |
328 | serge | 205 | invlpg [edi] |
206 | add edi, edx |
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207 | add eax, edx |
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208 | inc ebx |
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209 | dec ecx |
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210 | jnz @B |
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211 | mov [pg_data.pg_mutex],ecx |
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212 | .fail: |
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741 | serge | 213 | pop edi |
281 | serge | 214 | ret |
215 | |||
328 | serge | 216 | |
281 | serge | 217 | ; param |
279 | serge | 218 | ; eax= base |
281 | serge | 219 | ; ecx= count |
279 | serge | 220 | |
164 | serge | 221 | align 4 |
279 | serge | 222 | release_pages: |
321 | diamond | 223 | |
224 | pushad |
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279 | serge | 225 | mov ebx, pg_data.pg_mutex |
226 | call wait_mutex ;ebx |
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227 | |||
228 | mov esi, eax |
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229 | mov edi, eax |
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230 | |||
231 | shr esi, 10 |
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365 | serge | 232 | add esi, page_tabs |
328 | serge | 233 | |
234 | mov ebp, [pg_data.pages_free] |
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279 | serge | 235 | mov ebx, [page_start] |
236 | mov edx, sys_pgmap |
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237 | @@: |
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238 | xor eax, eax |
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239 | xchg eax, [esi] |
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240 | invlpg [edi] |
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241 | |||
242 | test eax, 1 |
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243 | jz .next |
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244 | |||
245 | shr eax, 12 |
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246 | bts [edx], eax |
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291 | serge | 247 | cmc |
328 | serge | 248 | adc ebp, 0 |
279 | serge | 249 | shr eax, 3 |
250 | and eax, -4 |
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251 | add eax, edx |
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252 | cmp eax, ebx |
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253 | jae .next |
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254 | |||
255 | mov ebx, eax |
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256 | .next: |
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257 | add edi, 0x1000 |
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258 | add esi, 4 |
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259 | dec ecx |
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260 | jnz @B |
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328 | serge | 261 | mov [pg_data.pages_free], ebp |
279 | serge | 262 | and [pg_data.pg_mutex],0 |
321 | diamond | 263 | popad |
279 | serge | 264 | ret |
265 | |||
266 | align 4 |
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188 | serge | 267 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
321 | diamond | 268 | push ebx |
164 | serge | 269 | mov ebx, [lin_addr] |
270 | shr ebx, 22 |
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271 | mov eax, [phis_addr] |
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272 | and eax, not 0xFFF |
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273 | or eax, PG_UW ;+PG_NOCACHE |
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378 | serge | 274 | mov dword [master_tab+ebx*4], eax |
164 | serge | 275 | mov eax, [lin_addr] |
276 | shr eax, 10 |
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365 | serge | 277 | add eax, page_tabs |
164 | serge | 278 | invlpg [eax] |
321 | diamond | 279 | pop ebx |
164 | serge | 280 | ret |
281 | endp |
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282 | |||
283 | align 4 |
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284 | proc init_LFB |
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378 | serge | 285 | locals |
286 | pg_count dd ? |
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287 | endl |
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288 | |||
164 | serge | 289 | cmp dword [LFBAddress], -1 |
290 | jne @f |
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412 | serge | 291 | mov [BOOT_VAR+0x901c],byte 2 |
164 | serge | 292 | stdcall kernel_alloc, 0x280000 |
293 | mov [LFBAddress], eax |
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294 | ret |
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295 | @@: |
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296 | test [SCR_MODE],word 0100000000000000b |
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211 | serge | 297 | jnz @f |
412 | serge | 298 | mov [BOOT_VAR+0x901c],byte 2 |
211 | serge | 299 | ret |
300 | @@: |
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490 | serge | 301 | call init_mtrr |
302 | |||
378 | serge | 303 | mov edx, LFB_BASE |
304 | mov esi, [LFBAddress] |
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465 | serge | 305 | mov edi, 0x00800000 |
379 | serge | 306 | mov dword [exp_lfb+4], edx |
214 | serge | 307 | |
164 | serge | 308 | shr edi, 12 |
309 | mov [pg_count], edi |
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310 | shr edi, 10 |
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311 | |||
312 | bt [cpu_caps], CAPS_PSE |
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313 | jnc .map_page_tables |
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314 | or esi, PG_LARGE+PG_UW |
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465 | serge | 315 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
164 | serge | 316 | @@: |
465 | serge | 317 | mov [edx], esi |
378 | serge | 318 | add edx, 4 |
164 | serge | 319 | add esi, 0x00400000 |
320 | dec edi |
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321 | jnz @B |
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322 | |||
207 | serge | 323 | bt [cpu_caps], CAPS_PGE |
324 | jnc @F |
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465 | serge | 325 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
207 | serge | 326 | @@: |
378 | serge | 327 | mov dword [LFBAddress], LFB_BASE |
164 | serge | 328 | mov eax, cr3 ;flush TLB |
329 | mov cr3, eax |
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330 | ret |
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331 | |||
332 | .map_page_tables: |
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333 | |||
465 | serge | 334 | @@: |
164 | serge | 335 | call alloc_page |
378 | serge | 336 | stdcall map_page_table, edx, eax |
389 | serge | 337 | add edx, 0x00400000 |
164 | serge | 338 | dec edi |
465 | serge | 339 | jnz @B |
164 | serge | 340 | |
341 | mov eax, [LFBAddress] |
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378 | serge | 342 | mov edi, page_tabs + (LFB_BASE shr 10) |
164 | serge | 343 | or eax, PG_UW |
344 | mov ecx, [pg_count] |
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378 | serge | 345 | cld |
389 | serge | 346 | @@: |
347 | stosd |
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348 | add eax, 0x1000 |
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349 | dec ecx |
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350 | jnz @B |
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164 | serge | 351 | |
378 | serge | 352 | mov dword [LFBAddress], LFB_BASE |
164 | serge | 353 | mov eax, cr3 ;flush TLB |
354 | mov cr3, eax |
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355 | |||
356 | ret |
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357 | endp |
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358 | |||
359 | align 4 |
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360 | proc new_mem_resize stdcall, new_size:dword |
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361 | |||
276 | serge | 362 | mov ebx, pg_data.pg_mutex |
363 | call wait_mutex ;ebx |
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164 | serge | 364 | |
365 | mov edi, [new_size] |
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366 | add edi,4095 |
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367 | and edi,not 4095 |
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368 | mov [new_size], edi |
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369 | |||
465 | serge | 370 | mov edx,[current_slot] |
371 | cmp [edx+APPDATA.heap_base],0 |
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172 | serge | 372 | jne .exit |
373 | |||
465 | serge | 374 | mov esi, [edx+APPDATA.mem_size] |
164 | serge | 375 | add esi, 4095 |
376 | and esi, not 4095 |
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377 | |||
378 | cmp edi, esi |
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379 | jae .expand |
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380 | |||
381 | shr edi, 12 |
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382 | shr esi, 12 |
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383 | @@: |
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378 | serge | 384 | mov eax, [app_page_tabs+edi*4] |
164 | serge | 385 | test eax, 1 |
386 | jz .next |
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378 | serge | 387 | mov dword [app_page_tabs+edi*4], 2 |
164 | serge | 388 | mov ebx, edi |
389 | shl ebx, 12 |
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659 | serge | 390 | invlpg [ebx] |
164 | serge | 391 | call free_page |
392 | |||
393 | .next: add edi, 1 |
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394 | cmp edi, esi |
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395 | jb @B |
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396 | |||
397 | .update_size: |
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465 | serge | 398 | mov ebx, [new_size] |
399 | call update_mem_size |
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164 | serge | 400 | |
401 | xor eax, eax |
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402 | dec [pg_data.pg_mutex] |
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403 | ret |
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404 | .expand: |
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405 | |||
406 | push esi |
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407 | push edi |
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408 | |||
409 | add edi, 0x3FFFFF |
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410 | and edi, not(0x3FFFFF) |
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411 | add esi, 0x3FFFFF |
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412 | and esi, not(0x3FFFFF) |
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413 | |||
414 | cmp esi, edi |
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415 | jae .grow |
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416 | |||
417 | xchg esi, edi |
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418 | |||
419 | @@: |
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420 | call alloc_page |
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421 | test eax, eax |
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422 | jz .exit |
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423 | |||
188 | serge | 424 | stdcall map_page_table, edi, eax |
164 | serge | 425 | |
426 | push edi |
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427 | shr edi, 10 |
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365 | serge | 428 | add edi, page_tabs |
164 | serge | 429 | mov ecx, 1024 |
430 | xor eax, eax |
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431 | cld |
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432 | rep stosd |
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433 | pop edi |
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434 | |||
435 | add edi, 0x00400000 |
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436 | cmp edi, esi |
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437 | jb @B |
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438 | .grow: |
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439 | pop edi |
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440 | pop esi |
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441 | @@: |
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442 | call alloc_page |
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443 | test eax, eax |
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444 | jz .exit |
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445 | stdcall map_page,esi,eax,dword PG_UW |
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446 | |||
447 | push edi |
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448 | mov edi, esi |
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449 | xor eax, eax |
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450 | mov ecx, 1024 |
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451 | cld |
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452 | rep stosd |
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453 | pop edi |
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454 | |||
455 | add esi, 0x1000 |
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456 | cmp esi, edi |
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294 | diamond | 457 | jb @B |
164 | serge | 458 | |
459 | jmp .update_size |
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460 | .exit: |
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461 | xor eax, eax |
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462 | inc eax |
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463 | dec [pg_data.pg_mutex] |
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464 | ret |
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465 | endp |
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466 | |||
294 | diamond | 467 | update_mem_size: |
465 | serge | 468 | ; in: edx = slot base |
294 | diamond | 469 | ; ebx = new memory size |
470 | ; destroys eax,ecx,edx |
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471 | |||
465 | serge | 472 | mov [APPDATA.mem_size+edx],ebx |
294 | diamond | 473 | ;search threads and update |
474 | ;application memory size infomation |
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465 | serge | 475 | mov ecx,[APPDATA.dir_table+edx] |
294 | diamond | 476 | mov eax,2 |
477 | |||
478 | .search_threads: |
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479 | ;eax = current slot |
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480 | ;ebx = new memory size |
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481 | ;ecx = page directory |
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482 | cmp eax,[TASK_COUNT] |
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483 | jg .search_threads_end |
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484 | mov edx,eax |
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485 | shl edx,5 |
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486 | cmp word [CURRENT_TASK+edx+TASKDATA.state],9 ;if slot empty? |
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487 | jz .search_threads_next |
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488 | shl edx,3 |
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380 | serge | 489 | cmp [SLOT_BASE+edx+APPDATA.dir_table],ecx ;if it is our thread? |
294 | diamond | 490 | jnz .search_threads_next |
380 | serge | 491 | mov [SLOT_BASE+edx+APPDATA.mem_size],ebx ;update memory size |
294 | diamond | 492 | .search_threads_next: |
493 | inc eax |
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494 | jmp .search_threads |
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495 | .search_threads_end: |
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496 | ret |
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497 | |||
285 | serge | 498 | ; param |
499 | ; eax= linear address |
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500 | ; |
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501 | ; retval |
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502 | ; eax= phisical page address |
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503 | |||
164 | serge | 504 | align 4 |
285 | serge | 505 | get_pg_addr: |
506 | shr eax, 12 |
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365 | serge | 507 | mov eax, [page_tabs+eax*4] |
164 | serge | 508 | and eax, 0xFFFFF000 |
509 | ret |
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510 | |||
465 | serge | 511 | |
188 | serge | 512 | align 4 |
164 | serge | 513 | proc page_fault_handler |
465 | serge | 514 | |
709 | diamond | 515 | test byte [esp+12+2], 2 |
516 | jnz v86_page_fault |
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517 | |||
465 | serge | 518 | .err_code equ ebp+32 |
519 | .err_addr equ ebp-4 |
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520 | |||
164 | serge | 521 | pushad |
522 | mov ebp, esp |
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523 | mov eax, cr2 |
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172 | serge | 524 | push eax |
164 | serge | 525 | |
465 | serge | 526 | mov ax, app_data |
164 | serge | 527 | mov ds, ax |
188 | serge | 528 | mov es, ax |
164 | serge | 529 | |
188 | serge | 530 | inc [pg_data.pages_faults] |
531 | |||
465 | serge | 532 | ; push eax |
533 | ; push edx |
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534 | ; mov edx, 0x400 ;bochs |
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535 | ; mov al,0xff ;bochs |
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536 | ; out dx, al ;bochs |
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537 | ; pop edx |
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538 | ; pop eax |
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164 | serge | 539 | |
465 | serge | 540 | mov ebx, [.err_addr] |
541 | mov eax, [.err_code] |
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164 | serge | 542 | |
465 | serge | 543 | cmp ebx, OS_BASE |
544 | jb .user_space ;ñòðàíèöà â ïàìÿòè ïðèëîæåíèÿ ; |
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188 | serge | 545 | |
378 | serge | 546 | cmp ebx, page_tabs |
465 | serge | 547 | jb .kernel_space ;ñòðàíèöà â ïàìÿòè ÿäðà |
164 | serge | 548 | |
465 | serge | 549 | cmp ebx, kernel_tabs |
550 | jb .alloc;.app_tabs ;òàáëèöû ñòðàíèö ïðèëîæåíèÿ ; |
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551 | ;ïðîñòî ñîçäàäèì îäíó |
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378 | serge | 552 | |
465 | serge | 553 | cmp ebx, LFB_BASE |
554 | jb .core_tabs ;òàáëèöû ñòðàíèö ÿäðà |
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555 | ;Îøèáêà |
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556 | .lfb: |
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557 | ;îáëàñòü LFB |
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558 | ;Îøèáêà |
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559 | jmp .fail |
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164 | serge | 560 | |
465 | serge | 561 | align 4 |
164 | serge | 562 | .user_space: |
465 | serge | 563 | test eax, PG_MAP |
564 | jnz .err_access ;Ñòðàíèöà ïðèñóòñòâóåò |
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565 | ;Îøèáêà äîñòóïà ? |
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566 | |||
164 | serge | 567 | shr ebx, 12 |
172 | serge | 568 | mov ecx, ebx |
569 | shr ecx, 10 |
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570 | mov edx, [master_tab+ecx*4] |
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465 | serge | 571 | test edx, PG_MAP |
572 | jz .fail ;òàáëèöà ñòðàíèö íå ñîçäàíà |
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573 | ;íåâåðíûé àäðåñ â ïðîãðàììå |
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172 | serge | 574 | |
365 | serge | 575 | mov eax, [page_tabs+ebx*4] |
164 | serge | 576 | test eax, 2 |
465 | serge | 577 | jz .fail ;àäðåñ íå çàðåçåðâèðîâàí äëÿ ; |
578 | ;èñïîëüçîâàíèÿ. Îøèáêà |
||
188 | serge | 579 | .alloc: |
164 | serge | 580 | call alloc_page |
566 | serge | 581 | test eax, eax |
465 | serge | 582 | jz .fail |
164 | serge | 583 | |
584 | stdcall map_page,[ebp-4],eax,dword PG_UW |
||
585 | |||
188 | serge | 586 | mov edi, [ebp-4] |
587 | and edi, 0xFFFFF000 |
||
164 | serge | 588 | mov ecx, 1024 |
589 | xor eax, eax |
||
188 | serge | 590 | cld |
591 | rep stosd |
||
164 | serge | 592 | .exit: |
593 | mov esp, ebp |
||
594 | popad |
||
595 | add esp, 4 |
||
596 | iretd |
||
465 | serge | 597 | |
598 | .err_access: |
||
599 | ;íèêîãäà íå ïðîèñõîäèò |
||
600 | jmp .fail |
||
601 | |||
602 | .kernel_space: |
||
603 | test eax, PG_MAP |
||
604 | jz .fail ;ñòðàíèöà íå ïðèñóòñòâóåò |
||
605 | |||
606 | test eax, 4 ;U/S |
||
607 | jnz .fail ;ïðèëîæåíèå îáðàòèëîñü ê ïàìÿòè |
||
608 | ;ÿäðà |
||
609 | test eax, 8 |
||
610 | jnz .fail ;óñòàíîâëåí çàðåçåðâèðîâàííûé áèò |
||
611 | ;â òàáëèöàõ ñòðàíèö. äîáàâëåíî â P4/Xeon |
||
612 | |||
613 | ;ïîïûòêà çàïèñè â çàùèù¸ííóþ ñòðàíèöó ÿäðà |
||
614 | |||
615 | cmp ebx, tss._io_map_0 |
||
616 | jb .fail |
||
617 | |||
618 | cmp ebx, tss._io_map_0+8192 |
||
619 | jae .fail |
||
620 | |||
621 | ; io permission map |
||
622 | ; copy-on-write protection |
||
623 | |||
624 | call alloc_page |
||
566 | serge | 625 | test eax, eax |
465 | serge | 626 | jz .fail |
627 | |||
628 | push eax |
||
629 | stdcall map_page,[ebp-4],eax,dword PG_SW |
||
630 | pop eax |
||
631 | mov edi, [.err_addr] |
||
632 | and edi, -4096 |
||
633 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
||
634 | |||
635 | mov ebx, esi |
||
636 | shr ebx, 12 |
||
637 | mov edx, [current_slot] |
||
638 | or eax, PG_SW |
||
639 | mov [edx+APPDATA.io_map+ebx*4], eax |
||
640 | |||
641 | add esi, [default_io_map] |
||
642 | mov ecx, 4096/4 |
||
643 | cld |
||
644 | rep movsd |
||
645 | jmp .exit |
||
646 | |||
647 | |||
648 | ;íå îáðàáàòûâàåì. Îøèáêà |
||
649 | |||
650 | .core_tabs: |
||
172 | serge | 651 | .fail: |
652 | mov esp, ebp |
||
653 | popad |
||
654 | add esp, 4 |
||
164 | serge | 655 | |
465 | serge | 656 | ; iretd |
657 | |||
172 | serge | 658 | save_ring3_context ;debugger support |
659 | |||
660 | mov bl, 14 |
||
661 | jmp exc_c |
||
662 | iretd |
||
164 | serge | 663 | endp |
664 | |||
665 | align 4 |
||
666 | proc map_mem stdcall, lin_addr:dword,pdir:dword,\ |
||
667 | ofs:dword,buf_size:dword |
||
668 | mov eax, [buf_size] |
||
669 | test eax, eax |
||
670 | jz .exit |
||
671 | |||
672 | mov eax, [pdir] |
||
673 | and eax, 0xFFFFF000 |
||
674 | |||
536 | diamond | 675 | stdcall map_page,[ipc_pdir],eax,PG_UW |
164 | serge | 676 | mov ebx, [ofs] |
677 | shr ebx, 22 |
||
678 | mov esi, [ipc_pdir] |
||
679 | mov edi, [ipc_ptab] |
||
680 | mov eax, [esi+ebx*4] |
||
681 | and eax, 0xFFFFF000 |
||
682 | jz .exit |
||
536 | diamond | 683 | stdcall map_page,edi,eax,PG_UW |
164 | serge | 684 | ; inc ebx |
685 | ; add edi, 0x1000 |
||
686 | ; mov eax, [esi+ebx*4] |
||
687 | ; test eax, eax |
||
688 | ; jz @f |
||
689 | ; and eax, 0xFFFFF000 |
||
690 | ; stdcall map_page, edi, eax |
||
691 | |||
692 | @@: mov edi, [lin_addr] |
||
693 | and edi, 0xFFFFF000 |
||
694 | mov ecx, [buf_size] |
||
695 | add ecx, 4095 |
||
696 | shr ecx, 12 |
||
697 | inc ecx |
||
698 | |||
699 | mov edx, [ofs] |
||
700 | shr edx, 12 |
||
701 | and edx, 0x3FF |
||
702 | mov esi, [ipc_ptab] |
||
703 | |||
704 | .map: mov eax, [esi+edx*4] |
||
705 | and eax, 0xFFFFF000 |
||
536 | diamond | 706 | jz .exit |
707 | stdcall map_page,edi,eax,PG_UW |
||
708 | dec ecx |
||
709 | jz .exit |
||
164 | serge | 710 | add edi, 0x1000 |
711 | inc edx |
||
536 | diamond | 712 | cmp edx, 0x400 |
164 | serge | 713 | jnz .map |
536 | diamond | 714 | inc ebx |
715 | mov eax, [ipc_pdir] |
||
716 | mov eax, [eax+ebx*4] |
||
717 | and eax, 0xFFFFF000 |
||
718 | jz .exit |
||
719 | stdcall map_page,esi,eax,PG_UW |
||
720 | xor edx, edx |
||
721 | jmp .map |
||
164 | serge | 722 | |
723 | .exit: |
||
724 | ret |
||
725 | endp |
||
726 | |||
727 | align 4 |
||
728 | proc map_memEx stdcall, lin_addr:dword,pdir:dword,\ |
||
729 | ofs:dword,buf_size:dword |
||
730 | mov eax, [buf_size] |
||
731 | test eax, eax |
||
732 | jz .exit |
||
733 | |||
734 | mov eax, [pdir] |
||
735 | and eax, 0xFFFFF000 |
||
736 | |||
737 | stdcall map_page,[proc_mem_pdir],eax,dword PG_UW |
||
738 | mov ebx, [ofs] |
||
739 | shr ebx, 22 |
||
740 | mov esi, [proc_mem_pdir] |
||
741 | mov edi, [proc_mem_tab] |
||
742 | mov eax, [esi+ebx*4] |
||
743 | and eax, 0xFFFFF000 |
||
744 | test eax, eax |
||
745 | jz .exit |
||
746 | stdcall map_page,edi,eax,dword PG_UW |
||
747 | |||
748 | @@: mov edi, [lin_addr] |
||
749 | and edi, 0xFFFFF000 |
||
750 | mov ecx, [buf_size] |
||
751 | add ecx, 4095 |
||
752 | shr ecx, 12 |
||
753 | inc ecx |
||
754 | |||
755 | mov edx, [ofs] |
||
756 | shr edx, 12 |
||
757 | and edx, 0x3FF |
||
758 | mov esi, [proc_mem_tab] |
||
759 | |||
760 | .map: mov eax, [esi+edx*4] |
||
761 | ; and eax, 0xFFFFF000 |
||
762 | ; test eax, eax |
||
763 | ; jz .exit |
||
764 | stdcall map_page,edi,eax,dword PG_UW |
||
765 | add edi, 0x1000 |
||
766 | inc edx |
||
767 | dec ecx |
||
768 | jnz .map |
||
769 | .exit: |
||
770 | ret |
||
771 | endp |
||
772 | |||
773 | |||
774 | |||
775 | |||
776 | sys_IPC: |
||
777 | ;input: |
||
778 | ; eax=1 - set ipc buffer area |
||
779 | ; ebx=address of buffer |
||
780 | ; ecx=size of buffer |
||
781 | ; eax=2 - send message |
||
782 | ; ebx=PID |
||
783 | ; ecx=address of message |
||
784 | ; edx=size of message |
||
785 | |||
786 | cmp eax,1 |
||
787 | jne @f |
||
788 | call set_ipc_buff |
||
789 | mov [esp+36], eax |
||
790 | ret |
||
791 | @@: |
||
792 | cmp eax, 2 |
||
793 | jne @f |
||
794 | stdcall sys_ipc_send, ebx, ecx, edx |
||
795 | mov [esp+36], eax |
||
796 | ret |
||
797 | @@: |
||
798 | xor eax, eax |
||
799 | not eax |
||
800 | mov [esp+36], eax |
||
801 | ret |
||
802 | |||
803 | align 4 |
||
804 | proc set_ipc_buff |
||
805 | |||
465 | serge | 806 | mov eax,[current_slot] |
164 | serge | 807 | pushf |
808 | cli |
||
465 | serge | 809 | mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
810 | mov [eax+APPDATA.ipc_size],ecx |
||
164 | serge | 811 | |
812 | add ecx, ebx |
||
813 | add ecx, 4095 |
||
814 | and ecx, not 4095 |
||
815 | |||
816 | .touch: mov eax, [ebx] |
||
817 | add ebx, 0x1000 |
||
818 | cmp ebx, ecx |
||
536 | diamond | 819 | jb .touch |
164 | serge | 820 | |
821 | popf |
||
822 | xor eax, eax |
||
823 | ret |
||
824 | endp |
||
825 | |||
826 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
||
827 | locals |
||
828 | dst_slot dd ? |
||
829 | dst_offset dd ? |
||
830 | buf_size dd ? |
||
536 | diamond | 831 | used_buf dd ? |
164 | serge | 832 | endl |
833 | |||
834 | pushf |
||
835 | cli |
||
836 | |||
837 | mov eax, [PID] |
||
838 | call pid_to_slot |
||
839 | test eax,eax |
||
840 | jz .no_pid |
||
841 | |||
842 | mov [dst_slot], eax |
||
843 | shl eax,8 |
||
380 | serge | 844 | mov edi,[eax+SLOT_BASE+0xa0] ;is ipc area defined? |
164 | serge | 845 | test edi,edi |
846 | jz .no_ipc_area |
||
847 | |||
848 | mov ebx, edi |
||
849 | and ebx, 0xFFF |
||
850 | mov [dst_offset], ebx |
||
851 | |||
380 | serge | 852 | mov esi, [eax+SLOT_BASE+0xa4] |
164 | serge | 853 | mov [buf_size], esi |
854 | |||
536 | diamond | 855 | mov ecx, [ipc_tmp] |
856 | cmp esi, 0x40000-0x1000 ; size of [ipc_tmp] minus one page |
||
857 | jbe @f |
||
858 | push eax esi edi |
||
859 | add esi,0x1000 |
||
860 | stdcall alloc_kernel_space,esi |
||
861 | mov ecx, eax |
||
862 | pop edi esi eax |
||
863 | @@: |
||
864 | mov [used_buf], ecx |
||
865 | stdcall map_mem, ecx, [SLOT_BASE+eax+0xB8],\ |
||
164 | serge | 866 | edi, esi |
867 | |||
868 | mov edi, [dst_offset] |
||
536 | diamond | 869 | add edi, [used_buf] |
164 | serge | 870 | cmp dword [edi], 0 |
871 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
227 | serge | 872 | |
566 | serge | 873 | mov edx, dword [edi+4] |
874 | lea ebx, [edx+8] |
||
164 | serge | 875 | add ebx, [msg_size] |
876 | cmp ebx, [buf_size] |
||
877 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
227 | serge | 878 | |
164 | serge | 879 | mov dword [edi+4], ebx |
880 | mov eax,[TASK_BASE] |
||
881 | mov eax, [eax+0x04] ;eax - our PID |
||
882 | add edi, edx |
||
883 | mov [edi], eax |
||
884 | mov ecx, [msg_size] |
||
885 | |||
886 | mov [edi+4], ecx |
||
887 | add edi, 8 |
||
888 | mov esi, [msg_addr] |
||
465 | serge | 889 | ; add esi, new_app_base |
164 | serge | 890 | cld |
891 | rep movsb |
||
892 | |||
893 | mov ebx, [ipc_tmp] |
||
894 | mov edx, ebx |
||
895 | shr ebx, 12 |
||
896 | xor eax, eax |
||
365 | serge | 897 | mov [page_tabs+ebx*4], eax |
164 | serge | 898 | invlpg [edx] |
899 | |||
900 | mov ebx, [ipc_pdir] |
||
901 | mov edx, ebx |
||
902 | shr ebx, 12 |
||
903 | xor eax, eax |
||
365 | serge | 904 | mov [page_tabs+ebx*4], eax |
164 | serge | 905 | invlpg [edx] |
906 | |||
907 | mov ebx, [ipc_ptab] |
||
908 | mov edx, ebx |
||
909 | shr ebx, 12 |
||
910 | xor eax, eax |
||
365 | serge | 911 | mov [page_tabs+ebx*4], eax |
164 | serge | 912 | invlpg [edx] |
913 | |||
914 | mov eax, [dst_slot] |
||
915 | shl eax, 8 |
||
380 | serge | 916 | or [eax+SLOT_BASE+0xA8],dword 0x40 |
164 | serge | 917 | cmp dword [check_idle_semaphore],20 |
918 | jge .ipc_no_cis |
||
919 | |||
920 | mov dword [check_idle_semaphore],5 |
||
921 | .ipc_no_cis: |
||
536 | diamond | 922 | push 0 |
923 | jmp .ret |
||
164 | serge | 924 | .no_pid: |
925 | popf |
||
536 | diamond | 926 | mov eax, 4 |
164 | serge | 927 | ret |
928 | .no_ipc_area: |
||
929 | popf |
||
930 | xor eax, eax |
||
931 | inc eax |
||
932 | ret |
||
933 | .ipc_blocked: |
||
536 | diamond | 934 | push 2 |
935 | jmp .ret |
||
164 | serge | 936 | .buffer_overflow: |
536 | diamond | 937 | push 3 |
938 | .ret: |
||
939 | mov eax, [used_buf] |
||
940 | cmp eax, [ipc_tmp] |
||
941 | jz @f |
||
942 | stdcall free_kernel_space,eax |
||
943 | @@: |
||
944 | pop eax |
||
164 | serge | 945 | popf |
946 | ret |
||
947 | endp |
||
948 | |||
949 | align 4 |
||
170 | serge | 950 | sysfn_meminfo: |
164 | serge | 951 | |
465 | serge | 952 | ; add ebx, new_app_base |
953 | cmp ebx, OS_BASE |
||
954 | jae .fail |
||
172 | serge | 955 | |
164 | serge | 956 | mov eax, [pg_data.pages_count] |
170 | serge | 957 | mov [ebx], eax |
172 | serge | 958 | shl eax, 12 |
959 | mov [esp+36], eax |
||
170 | serge | 960 | mov ecx, [pg_data.pages_free] |
961 | mov [ebx+4], ecx |
||
962 | mov edx, [pg_data.pages_faults] |
||
963 | mov [ebx+8], edx |
||
964 | mov esi, [heap_size] |
||
965 | mov [ebx+12], esi |
||
966 | mov edi, [heap_free] |
||
967 | mov [ebx+16], edi |
||
968 | mov eax, [heap_blocks] |
||
969 | mov [ebx+20], eax |
||
970 | mov ecx, [free_blocks] |
||
971 | mov [ebx+24], ecx |
||
164 | serge | 972 | ret |
172 | serge | 973 | .fail: |
974 | mov dword [esp+36], -1 |
||
975 | ret |
||
164 | serge | 976 | |
977 | align 4 |
||
978 | new_services: |
||
979 | |||
980 | cmp eax,4 |
||
981 | jle sys_sheduler |
||
982 | |||
170 | serge | 983 | cmp eax, 11 |
164 | serge | 984 | jb .fail |
985 | ja @f |
||
986 | |||
188 | serge | 987 | call init_heap |
164 | serge | 988 | mov [esp+36], eax |
989 | ret |
||
990 | @@: |
||
991 | cmp eax, 12 |
||
992 | ja @f |
||
993 | |||
994 | stdcall user_alloc, ebx |
||
995 | mov [esp+36], eax |
||
996 | ret |
||
997 | @@: |
||
998 | cmp eax, 13 |
||
999 | ja @f |
||
1000 | stdcall user_free, ebx |
||
1001 | mov [esp+36], eax |
||
1002 | ret |
||
1003 | @@: |
||
1004 | cmp eax, 14 |
||
1005 | ja @f |
||
465 | serge | 1006 | cmp ebx, OS_BASE |
1007 | jae .fail |
||
227 | serge | 1008 | stdcall get_event_ex, ebx, ecx |
1009 | mov [esp+36], eax |
||
164 | serge | 1010 | ret |
1011 | @@: |
||
1012 | cmp eax, 15 |
||
1013 | ja @f |
||
465 | serge | 1014 | mov ecx, [current_slot] |
1015 | mov eax, [ecx+APPDATA.fpu_handler] |
||
1016 | mov [ecx+APPDATA.fpu_handler], ebx |
||
164 | serge | 1017 | mov [esp+36], eax |
1018 | ret |
||
1019 | @@: |
||
1020 | cmp eax, 16 |
||
1021 | ja @f |
||
1022 | |||
188 | serge | 1023 | test ebx, ebx |
1024 | jz .fail |
||
465 | serge | 1025 | cmp ebx, OS_BASE |
1026 | jae .fail |
||
164 | serge | 1027 | stdcall get_service, ebx |
1028 | mov [esp+36], eax |
||
1029 | ret |
||
1030 | @@: |
||
1031 | cmp eax, 17 |
||
1032 | ja @f |
||
378 | serge | 1033 | call srv_handlerEx ;ebx |
164 | serge | 1034 | mov [esp+36], eax |
1035 | ret |
||
168 | serge | 1036 | @@: |
1037 | cmp eax, 18 |
||
1038 | ja @f |
||
465 | serge | 1039 | mov ecx, [current_slot] |
1040 | mov eax, [ecx+APPDATA.sse_handler] |
||
1041 | mov [ecx+APPDATA.sse_handler], ebx |
||
168 | serge | 1042 | mov [esp+36], eax |
1043 | ret |
||
164 | serge | 1044 | @@: |
198 | serge | 1045 | cmp eax, 19 |
448 | diamond | 1046 | ja @f |
465 | serge | 1047 | cmp ebx, OS_BASE |
1048 | jae .fail |
||
198 | serge | 1049 | stdcall load_library, ebx |
1050 | mov [esp+36], eax |
||
1051 | ret |
||
448 | diamond | 1052 | @@: |
490 | serge | 1053 | cmp eax, 20 |
740 | serge | 1054 | ja @F |
490 | serge | 1055 | mov eax, ecx |
1056 | call user_realloc |
||
1057 | mov [esp+36], eax |
||
1058 | ret |
||
740 | serge | 1059 | @@: |
1060 | cmp eax, 21 |
||
1061 | ja @f |
||
1062 | cmp ebx, OS_BASE |
||
1063 | jae .fail |
||
1064 | |||
1065 | stdcall load_PE, ebx |
||
1066 | |||
1067 | test eax, eax |
||
1068 | jz @F |
||
1069 | |||
1070 | mov esi, eax |
||
1071 | stdcall eax, DRV_ENTRY |
||
1072 | |||
1073 | test eax, eax |
||
1074 | jz @F |
||
1075 | |||
1076 | mov [eax+SRV.entry], esi |
||
1077 | |||
1078 | @@: |
||
1079 | mov [esp+36], eax |
||
1080 | ret |
||
1081 | |||
1082 | |||
164 | serge | 1083 | .fail: |
1084 | xor eax, eax |
||
1085 | mov [esp+36], eax |
||
1086 | ret |
||
1087 | |||
1088 | align 4 |
||
1089 | proc init_mtrr |
||
1090 | |||
412 | serge | 1091 | cmp [BOOT_VAR+0x901c],byte 2 |
164 | serge | 1092 | je .exit |
1093 | |||
211 | serge | 1094 | bt [cpu_caps], CAPS_MTRR |
1095 | jnc .exit |
||
1096 | |||
164 | serge | 1097 | mov eax, cr0 |
1098 | or eax, 0x60000000 ;disable caching |
||
1099 | mov cr0, eax |
||
1100 | wbinvd ;invalidate cache |
||
1101 | |||
1102 | mov ecx, 0x2FF |
||
1103 | rdmsr ; |
||
1104 | push eax |
||
1105 | |||
1106 | xor edx, edx |
||
1107 | xor eax, eax |
||
1108 | mov ecx, 0x2FF |
||
1109 | wrmsr ;disable all MTRR |
||
1110 | |||
1111 | stdcall set_mtrr, dword 0,dword 0,[MEM_AMOUNT],MEM_WB |
||
1112 | stdcall set_mtrr, dword 1,[LFBAddress],[LFBSize],MEM_WC |
||
1113 | xor edx, edx |
||
1114 | xor eax, eax |
||
1115 | mov ecx, 0x204 |
||
1116 | mov ebx, 6 |
||
1117 | @@: |
||
1118 | wrmsr ;disable unused MTRR |
||
1119 | inc ecx |
||
1120 | wrmsr |
||
1121 | inc ecx |
||
1122 | dec ebx |
||
1123 | jnz @b |
||
1124 | |||
1125 | wbinvd ;again invalidate |
||
1126 | |||
1127 | pop eax |
||
1128 | or eax, 0x800 ;set default memtype to UC |
||
1129 | and al, 0xF0 |
||
1130 | mov ecx, 0x2FF |
||
1131 | wrmsr ;and enable MTRR |
||
1132 | |||
1133 | mov eax, cr0 |
||
1134 | and eax, not 0x60000000 |
||
1135 | mov cr0, eax ; enable caching |
||
1136 | .exit: |
||
1137 | ret |
||
1138 | endp |
||
1139 | |||
1140 | align 4 |
||
1141 | proc set_mtrr stdcall, reg:dword,base:dword,size:dword,mem_type:dword |
||
1142 | |||
1143 | xor edx, edx |
||
1144 | mov eax, [base] |
||
1145 | or eax, [mem_type] |
||
1146 | mov ecx, [reg] |
||
1147 | lea ecx, [0x200+ecx*2] |
||
1148 | wrmsr |
||
1149 | |||
1150 | mov ebx, [size] |
||
1151 | dec ebx |
||
1152 | mov eax, 0xFFFFFFFF |
||
1153 | mov edx, 0x0000000F |
||
1154 | sub eax, ebx |
||
1155 | sbb edx, 0 |
||
1156 | or eax, 0x800 |
||
1157 | inc ecx |
||
1158 | wrmsr |
||
1159 | ret |
||
1160 | endp |
||
1161 | |||
465 | serge | 1162 | |
1163 | |||
1164 | align 4 |
||
172 | serge | 1165 | proc stall stdcall, delay:dword |
1166 | push ecx |
||
1167 | push edx |
||
1168 | push ebx |
||
1169 | push eax |
||
1170 | |||
1171 | mov eax, [delay] |
||
1172 | mul [stall_mcs] |
||
1173 | mov ebx, eax ;low |
||
1174 | mov ecx, edx ;high |
||
1175 | rdtsc |
||
1176 | add ebx, eax |
||
1177 | adc ecx,edx |
||
1178 | @@: |
||
1179 | rdtsc |
||
1180 | sub eax, ebx |
||
1181 | sbb edx, ecx |
||
1182 | jb @B |
||
1183 | |||
1184 | pop eax |
||
1185 | pop ebx |
||
1186 | pop edx |
||
1187 | pop ecx |
||
1188 | ret |
||
1189 | endp |
||
1190 | |||
520 | serge | 1191 | align 4 |
1192 | proc create_ring_buffer stdcall, size:dword, flags:dword |
||
1193 | locals |
||
1194 | buf_ptr dd ? |
||
1195 | endl |
||
237 | serge | 1196 | |
520 | serge | 1197 | mov eax, [size] |
1198 | test eax, eax |
||
1199 | jz .fail |
||
1200 | |||
1201 | add eax, eax |
||
1202 | stdcall alloc_kernel_space, eax |
||
1203 | test eax, eax |
||
1204 | jz .fail |
||
1205 | |||
662 | serge | 1206 | push ebx |
1207 | |||
520 | serge | 1208 | mov [buf_ptr], eax |
1209 | |||
1210 | mov ebx, [size] |
||
1211 | shr ebx, 12 |
||
1212 | push ebx |
||
1213 | |||
1214 | stdcall alloc_pages, ebx |
||
1215 | pop ecx |
||
1216 | |||
1217 | test eax, eax |
||
1218 | jz .mm_fail |
||
1219 | |||
662 | serge | 1220 | push edi |
1221 | |||
520 | serge | 1222 | or eax, [flags] |
1223 | mov edi, [buf_ptr] |
||
1224 | mov ebx, [buf_ptr] |
||
1225 | mov edx, ecx |
||
566 | serge | 1226 | shl edx, 2 |
520 | serge | 1227 | shr edi, 10 |
1228 | @@: |
||
1229 | mov [page_tabs+edi], eax |
||
1230 | mov [page_tabs+edi+edx], eax |
||
1231 | invlpg [ebx] |
||
1232 | invlpg [ebx+esi] |
||
1233 | add eax, 0x1000 |
||
1234 | add ebx, 0x1000 |
||
566 | serge | 1235 | add edi, 4 |
520 | serge | 1236 | dec ecx |
1237 | jnz @B |
||
1238 | |||
1239 | mov eax, [buf_ptr] |
||
662 | serge | 1240 | pop edi |
1241 | pop ebx |
||
520 | serge | 1242 | ret |
1243 | .mm_fail: |
||
1244 | stdcall free_kernel_space, [buf_ptr] |
||
1245 | xor eax, eax |
||
662 | serge | 1246 | pop ebx |
520 | serge | 1247 | .fail: |
1248 | ret |
||
1249 | endp |
||
1250 | |||
237 | serge | 1251 | if 0 |
465 | serge | 1252 | push eax |
1253 | push edx |
||
1254 | mov edx, 0x400 ;bochs |
||
1255 | mov al,0xff ;bochs |
||
1256 | out dx, al ;bochs |
||
1257 | pop edx |
||
1258 | pop eax |
||
1259 | end if0>> |
||
1260 |