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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: 839 $ |
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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819 | serge | 129 | shr eax, 12 ;page index |
130 | bts dword [sys_pgmap], eax ;that's all! |
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291 | serge | 131 | cmc |
328 | serge | 132 | adc [pg_data.pages_free], 0 |
164 | serge | 133 | shr eax, 3 |
819 | serge | 134 | and eax, not 3 ;dword offset from page_map |
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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819 | serge | 169 | ; push eax |
170 | ; invlpg [ebx] |
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171 | ; pop eax |
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741 | serge | 172 | inc eax |
173 | add ebx, edi |
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174 | add edx, edi |
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175 | loop @B |
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176 | |||
177 | pop eax |
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178 | mov edx, [base] |
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179 | and edx, 4095 |
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180 | add eax, edx |
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181 | .fail: |
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182 | pop edi |
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183 | pop ebx |
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184 | ret |
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185 | endp |
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186 | |||
279 | serge | 187 | ; param |
328 | serge | 188 | ; eax= page base + page flags |
819 | serge | 189 | ; ebx= linear address |
281 | serge | 190 | ; ecx= count |
191 | |||
192 | align 4 |
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328 | serge | 193 | commit_pages: |
741 | serge | 194 | push edi |
328 | serge | 195 | test ecx, ecx |
196 | jz .fail |
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281 | serge | 197 | |
328 | serge | 198 | mov edi, ebx |
199 | mov ebx, pg_data.pg_mutex |
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200 | call wait_mutex ;ebx |
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201 | |||
202 | mov edx, 0x1000 |
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203 | mov ebx, edi |
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204 | shr ebx, 12 |
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205 | @@: |
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365 | serge | 206 | mov [page_tabs+ebx*4], eax |
819 | serge | 207 | ; push eax |
208 | ; invlpg [edi] |
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209 | ; pop eax |
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328 | serge | 210 | add edi, edx |
211 | add eax, edx |
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212 | inc ebx |
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213 | dec ecx |
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214 | jnz @B |
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215 | mov [pg_data.pg_mutex],ecx |
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216 | .fail: |
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741 | serge | 217 | pop edi |
281 | serge | 218 | ret |
219 | |||
328 | serge | 220 | |
281 | serge | 221 | ; param |
279 | serge | 222 | ; eax= base |
281 | serge | 223 | ; ecx= count |
279 | serge | 224 | |
164 | serge | 225 | align 4 |
279 | serge | 226 | release_pages: |
321 | diamond | 227 | |
228 | pushad |
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279 | serge | 229 | mov ebx, pg_data.pg_mutex |
230 | call wait_mutex ;ebx |
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231 | |||
232 | mov esi, eax |
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233 | mov edi, eax |
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234 | |||
235 | shr esi, 10 |
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365 | serge | 236 | add esi, page_tabs |
328 | serge | 237 | |
238 | mov ebp, [pg_data.pages_free] |
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279 | serge | 239 | mov ebx, [page_start] |
240 | mov edx, sys_pgmap |
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241 | @@: |
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242 | xor eax, eax |
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243 | xchg eax, [esi] |
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837 | serge | 244 | push eax |
279 | serge | 245 | invlpg [edi] |
837 | serge | 246 | pop eax |
279 | serge | 247 | |
248 | test eax, 1 |
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249 | jz .next |
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250 | |||
251 | shr eax, 12 |
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252 | bts [edx], eax |
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291 | serge | 253 | cmc |
328 | serge | 254 | adc ebp, 0 |
279 | serge | 255 | shr eax, 3 |
256 | and eax, -4 |
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257 | add eax, edx |
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258 | cmp eax, ebx |
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259 | jae .next |
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260 | |||
261 | mov ebx, eax |
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262 | .next: |
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263 | add edi, 0x1000 |
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264 | add esi, 4 |
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265 | dec ecx |
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266 | jnz @B |
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328 | serge | 267 | mov [pg_data.pages_free], ebp |
279 | serge | 268 | and [pg_data.pg_mutex],0 |
321 | diamond | 269 | popad |
279 | serge | 270 | ret |
271 | |||
819 | serge | 272 | ; param |
273 | ; eax= base |
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274 | ; ecx= count |
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275 | |||
279 | serge | 276 | align 4 |
819 | serge | 277 | unmap_pages: |
278 | |||
279 | push edi |
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280 | |||
281 | mov edi, eax |
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282 | mov edx, eax |
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283 | |||
284 | shr edi, 10 |
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285 | add edi, page_tabs |
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286 | |||
287 | xor eax, eax |
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288 | @@: |
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289 | stosd |
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290 | invlpg [edx] |
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291 | add edx, 0x1000 |
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292 | loop @b |
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293 | |||
294 | pop edi |
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295 | ret |
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296 | |||
297 | |||
298 | align 4 |
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188 | serge | 299 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
321 | diamond | 300 | push ebx |
164 | serge | 301 | mov ebx, [lin_addr] |
302 | shr ebx, 22 |
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303 | mov eax, [phis_addr] |
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304 | and eax, not 0xFFF |
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305 | or eax, PG_UW ;+PG_NOCACHE |
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378 | serge | 306 | mov dword [master_tab+ebx*4], eax |
164 | serge | 307 | mov eax, [lin_addr] |
308 | shr eax, 10 |
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365 | serge | 309 | add eax, page_tabs |
164 | serge | 310 | invlpg [eax] |
321 | diamond | 311 | pop ebx |
164 | serge | 312 | ret |
313 | endp |
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314 | |||
315 | align 4 |
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316 | proc init_LFB |
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378 | serge | 317 | locals |
318 | pg_count dd ? |
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319 | endl |
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320 | |||
164 | serge | 321 | cmp dword [LFBAddress], -1 |
322 | jne @f |
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412 | serge | 323 | mov [BOOT_VAR+0x901c],byte 2 |
839 | serge | 324 | stdcall alloc_pages, 0x280000 shr 12 |
325 | add eax, OS_BASE |
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164 | serge | 326 | mov [LFBAddress], eax |
327 | ret |
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328 | @@: |
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329 | test [SCR_MODE],word 0100000000000000b |
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211 | serge | 330 | jnz @f |
412 | serge | 331 | mov [BOOT_VAR+0x901c],byte 2 |
211 | serge | 332 | ret |
333 | @@: |
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490 | serge | 334 | call init_mtrr |
335 | |||
839 | serge | 336 | xchg bx, bx |
214 | serge | 337 | |
839 | serge | 338 | mov eax, [LFBAddress] |
339 | or eax, PG_LARGE+PG_UW |
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340 | mov [sys_pgdir+(LFB_BASE shr 20)], eax |
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341 | add eax, 0x00400000 |
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342 | mov [sys_pgdir+4+(LFB_BASE shr 20)], eax |
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164 | serge | 343 | |
839 | serge | 344 | mov dword [exp_lfb+4], LFB_BASE |
164 | serge | 345 | |
207 | serge | 346 | bt [cpu_caps], CAPS_PGE |
347 | jnc @F |
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465 | serge | 348 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
207 | serge | 349 | @@: |
378 | serge | 350 | mov dword [LFBAddress], LFB_BASE |
164 | serge | 351 | mov eax, cr3 ;flush TLB |
352 | mov cr3, eax |
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353 | |||
354 | ret |
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355 | endp |
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356 | |||
357 | align 4 |
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358 | proc new_mem_resize stdcall, new_size:dword |
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359 | |||
276 | serge | 360 | mov ebx, pg_data.pg_mutex |
361 | call wait_mutex ;ebx |
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164 | serge | 362 | |
363 | mov edi, [new_size] |
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364 | add edi,4095 |
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365 | and edi,not 4095 |
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366 | mov [new_size], edi |
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367 | |||
465 | serge | 368 | mov edx,[current_slot] |
369 | cmp [edx+APPDATA.heap_base],0 |
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172 | serge | 370 | jne .exit |
371 | |||
465 | serge | 372 | mov esi, [edx+APPDATA.mem_size] |
164 | serge | 373 | add esi, 4095 |
374 | and esi, not 4095 |
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375 | |||
376 | cmp edi, esi |
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377 | jae .expand |
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378 | |||
379 | shr edi, 12 |
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380 | shr esi, 12 |
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381 | @@: |
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378 | serge | 382 | mov eax, [app_page_tabs+edi*4] |
164 | serge | 383 | test eax, 1 |
384 | jz .next |
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378 | serge | 385 | mov dword [app_page_tabs+edi*4], 2 |
164 | serge | 386 | mov ebx, edi |
387 | shl ebx, 12 |
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837 | serge | 388 | push eax |
659 | serge | 389 | invlpg [ebx] |
837 | serge | 390 | pop eax |
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 | mov ebx, [.err_addr] |
533 | mov eax, [.err_code] |
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164 | serge | 534 | |
839 | serge | 535 | ; xchg bx, bx |
536 | |||
537 | cmp ebx, HEAP_BASE |
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465 | serge | 538 | jb .user_space ;ñòðàíèöà â ïàìÿòè ïðèëîæåíèÿ ; |
188 | serge | 539 | |
839 | serge | 540 | cmp ebx, LFB_BASE |
541 | jb .kernel_heap |
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542 | |||
378 | serge | 543 | cmp ebx, page_tabs |
839 | serge | 544 | jb .lfb |
164 | serge | 545 | |
839 | serge | 546 | cmp ebx, OS_BASE |
547 | jb .core_tabs |
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548 | |||
549 | jmp .core_tabs |
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550 | |||
551 | ; cmp ebx, kernel_tabs |
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552 | ; jb .alloc;.app_tabs ;òàáëèöû ñòðàíèö ïðèëîæåíèÿ ; |
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465 | serge | 553 | ;ïðîñòî ñîçäàäèì îäíó |
378 | serge | 554 | |
465 | serge | 555 | .lfb: |
839 | serge | 556 | shr ebx, 22 |
557 | mov edx, [sys_pgdir + ebx*4] |
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558 | mov [master_tab + ebx*4], edx |
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559 | jmp .exit |
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164 | serge | 560 | |
839 | serge | 561 | .core_tabs: |
562 | |||
563 | shr ebx, 12 |
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564 | and ebx, 0x3FF |
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565 | mov edx, [master_tab + ebx*4] |
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566 | test edx, PG_MAP |
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567 | jz .check_ptab ;òàáëèöà ñòðàíèö íå ñîçäàíà |
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568 | |||
465 | serge | 569 | align 4 |
839 | serge | 570 | .kernel_heap: |
571 | |||
572 | shr ebx, 22 |
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573 | mov edx, [master_tab + ebx*4] |
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574 | test edx, PG_MAP |
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575 | jz .check_ptab ;òàáëèöà ñòðàíèö íå ñîçäàíà |
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576 | |||
577 | .check_ptab: |
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578 | mov edx, [sys_pgdir + ebx*4] |
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579 | test edx, PG_MAP |
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580 | jnz @F |
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581 | |||
582 | call alloc_page |
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583 | test eax, eax |
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584 | jz .fail |
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585 | |||
586 | lea edx, [eax + PG_UW] |
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587 | lea edi, [eax + OS_BASE] |
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588 | mov ecx, 1024 |
||
589 | xor eax, eax |
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590 | cld |
||
591 | rep stosd |
||
592 | |||
593 | mov [sys_pgdir + ebx*4], edx |
||
594 | @@: |
||
595 | mov [master_tab + ebx*4], edx |
||
596 | jmp .exit |
||
597 | |||
598 | align 4 |
||
164 | serge | 599 | .user_space: |
465 | serge | 600 | test eax, PG_MAP |
601 | jnz .err_access ;Ñòðàíèöà ïðèñóòñòâóåò |
||
602 | ;Îøèáêà äîñòóïà ? |
||
603 | |||
164 | serge | 604 | shr ebx, 12 |
172 | serge | 605 | mov ecx, ebx |
606 | shr ecx, 10 |
||
839 | serge | 607 | mov edx, [master_tab + ecx*4] |
465 | serge | 608 | test edx, PG_MAP |
609 | jz .fail ;òàáëèöà ñòðàíèö íå ñîçäàíà |
||
610 | ;íåâåðíûé àäðåñ â ïðîãðàììå |
||
172 | serge | 611 | |
365 | serge | 612 | mov eax, [page_tabs+ebx*4] |
164 | serge | 613 | test eax, 2 |
465 | serge | 614 | jz .fail ;àäðåñ íå çàðåçåðâèðîâàí äëÿ ; |
615 | ;èñïîëüçîâàíèÿ. Îøèáêà |
||
188 | serge | 616 | .alloc: |
164 | serge | 617 | call alloc_page |
566 | serge | 618 | test eax, eax |
465 | serge | 619 | jz .fail |
164 | serge | 620 | |
621 | stdcall map_page,[ebp-4],eax,dword PG_UW |
||
622 | |||
188 | serge | 623 | mov edi, [ebp-4] |
624 | and edi, 0xFFFFF000 |
||
164 | serge | 625 | mov ecx, 1024 |
626 | xor eax, eax |
||
188 | serge | 627 | cld |
628 | rep stosd |
||
164 | serge | 629 | .exit: |
630 | mov esp, ebp |
||
631 | popad |
||
632 | add esp, 4 |
||
633 | iretd |
||
465 | serge | 634 | |
635 | .err_access: |
||
636 | ;íèêîãäà íå ïðîèñõîäèò |
||
637 | jmp .fail |
||
638 | |||
639 | .kernel_space: |
||
640 | test eax, PG_MAP |
||
641 | jz .fail ;ñòðàíèöà íå ïðèñóòñòâóåò |
||
642 | |||
643 | test eax, 4 ;U/S |
||
644 | jnz .fail ;ïðèëîæåíèå îáðàòèëîñü ê ïàìÿòè |
||
645 | ;ÿäðà |
||
646 | test eax, 8 |
||
647 | jnz .fail ;óñòàíîâëåí çàðåçåðâèðîâàííûé áèò |
||
648 | ;â òàáëèöàõ ñòðàíèö. äîáàâëåíî â P4/Xeon |
||
649 | |||
650 | ;ïîïûòêà çàïèñè â çàùèù¸ííóþ ñòðàíèöó ÿäðà |
||
651 | |||
652 | cmp ebx, tss._io_map_0 |
||
653 | jb .fail |
||
654 | |||
655 | cmp ebx, tss._io_map_0+8192 |
||
656 | jae .fail |
||
657 | |||
658 | ; io permission map |
||
659 | ; copy-on-write protection |
||
660 | |||
661 | call alloc_page |
||
566 | serge | 662 | test eax, eax |
465 | serge | 663 | jz .fail |
664 | |||
665 | push eax |
||
666 | stdcall map_page,[ebp-4],eax,dword PG_SW |
||
667 | pop eax |
||
668 | mov edi, [.err_addr] |
||
669 | and edi, -4096 |
||
670 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
||
671 | |||
672 | mov ebx, esi |
||
673 | shr ebx, 12 |
||
674 | mov edx, [current_slot] |
||
675 | or eax, PG_SW |
||
676 | mov [edx+APPDATA.io_map+ebx*4], eax |
||
677 | |||
678 | add esi, [default_io_map] |
||
679 | mov ecx, 4096/4 |
||
680 | cld |
||
681 | rep movsd |
||
682 | jmp .exit |
||
683 | |||
684 | |||
685 | ;íå îáðàáàòûâàåì. Îøèáêà |
||
686 | |||
172 | serge | 687 | .fail: |
688 | mov esp, ebp |
||
689 | popad |
||
690 | add esp, 4 |
||
164 | serge | 691 | |
465 | serge | 692 | ; iretd |
693 | |||
172 | serge | 694 | save_ring3_context ;debugger support |
695 | |||
696 | mov bl, 14 |
||
697 | jmp exc_c |
||
698 | iretd |
||
164 | serge | 699 | endp |
700 | |||
701 | align 4 |
||
702 | proc map_mem stdcall, lin_addr:dword,pdir:dword,\ |
||
703 | ofs:dword,buf_size:dword |
||
704 | mov eax, [buf_size] |
||
705 | test eax, eax |
||
706 | jz .exit |
||
707 | |||
708 | mov eax, [pdir] |
||
709 | and eax, 0xFFFFF000 |
||
710 | |||
536 | diamond | 711 | stdcall map_page,[ipc_pdir],eax,PG_UW |
164 | serge | 712 | mov ebx, [ofs] |
713 | shr ebx, 22 |
||
714 | mov esi, [ipc_pdir] |
||
715 | mov edi, [ipc_ptab] |
||
716 | mov eax, [esi+ebx*4] |
||
717 | and eax, 0xFFFFF000 |
||
718 | jz .exit |
||
536 | diamond | 719 | stdcall map_page,edi,eax,PG_UW |
164 | serge | 720 | ; inc ebx |
721 | ; add edi, 0x1000 |
||
722 | ; mov eax, [esi+ebx*4] |
||
723 | ; test eax, eax |
||
724 | ; jz @f |
||
725 | ; and eax, 0xFFFFF000 |
||
726 | ; stdcall map_page, edi, eax |
||
727 | |||
728 | @@: mov edi, [lin_addr] |
||
729 | and edi, 0xFFFFF000 |
||
730 | mov ecx, [buf_size] |
||
731 | add ecx, 4095 |
||
732 | shr ecx, 12 |
||
733 | inc ecx |
||
734 | |||
735 | mov edx, [ofs] |
||
736 | shr edx, 12 |
||
737 | and edx, 0x3FF |
||
738 | mov esi, [ipc_ptab] |
||
739 | |||
740 | .map: mov eax, [esi+edx*4] |
||
741 | and eax, 0xFFFFF000 |
||
536 | diamond | 742 | jz .exit |
743 | stdcall map_page,edi,eax,PG_UW |
||
744 | dec ecx |
||
745 | jz .exit |
||
164 | serge | 746 | add edi, 0x1000 |
747 | inc edx |
||
536 | diamond | 748 | cmp edx, 0x400 |
164 | serge | 749 | jnz .map |
536 | diamond | 750 | inc ebx |
751 | mov eax, [ipc_pdir] |
||
752 | mov eax, [eax+ebx*4] |
||
753 | and eax, 0xFFFFF000 |
||
754 | jz .exit |
||
755 | stdcall map_page,esi,eax,PG_UW |
||
756 | xor edx, edx |
||
757 | jmp .map |
||
164 | serge | 758 | |
759 | .exit: |
||
760 | ret |
||
761 | endp |
||
762 | |||
763 | align 4 |
||
764 | proc map_memEx stdcall, lin_addr:dword,pdir:dword,\ |
||
765 | ofs:dword,buf_size:dword |
||
766 | mov eax, [buf_size] |
||
767 | test eax, eax |
||
768 | jz .exit |
||
769 | |||
770 | mov eax, [pdir] |
||
771 | and eax, 0xFFFFF000 |
||
772 | |||
773 | stdcall map_page,[proc_mem_pdir],eax,dword PG_UW |
||
774 | mov ebx, [ofs] |
||
775 | shr ebx, 22 |
||
776 | mov esi, [proc_mem_pdir] |
||
777 | mov edi, [proc_mem_tab] |
||
778 | mov eax, [esi+ebx*4] |
||
779 | and eax, 0xFFFFF000 |
||
780 | test eax, eax |
||
781 | jz .exit |
||
782 | stdcall map_page,edi,eax,dword PG_UW |
||
783 | |||
784 | @@: mov edi, [lin_addr] |
||
785 | and edi, 0xFFFFF000 |
||
786 | mov ecx, [buf_size] |
||
787 | add ecx, 4095 |
||
788 | shr ecx, 12 |
||
789 | inc ecx |
||
790 | |||
791 | mov edx, [ofs] |
||
792 | shr edx, 12 |
||
793 | and edx, 0x3FF |
||
794 | mov esi, [proc_mem_tab] |
||
795 | |||
796 | .map: mov eax, [esi+edx*4] |
||
797 | ; and eax, 0xFFFFF000 |
||
798 | ; test eax, eax |
||
799 | ; jz .exit |
||
800 | stdcall map_page,edi,eax,dword PG_UW |
||
801 | add edi, 0x1000 |
||
802 | inc edx |
||
803 | dec ecx |
||
804 | jnz .map |
||
805 | .exit: |
||
806 | ret |
||
807 | endp |
||
808 | |||
809 | |||
810 | |||
811 | |||
812 | sys_IPC: |
||
813 | ;input: |
||
814 | ; eax=1 - set ipc buffer area |
||
815 | ; ebx=address of buffer |
||
816 | ; ecx=size of buffer |
||
817 | ; eax=2 - send message |
||
818 | ; ebx=PID |
||
819 | ; ecx=address of message |
||
820 | ; edx=size of message |
||
821 | |||
822 | cmp eax,1 |
||
823 | jne @f |
||
824 | call set_ipc_buff |
||
825 | mov [esp+36], eax |
||
826 | ret |
||
827 | @@: |
||
828 | cmp eax, 2 |
||
829 | jne @f |
||
830 | stdcall sys_ipc_send, ebx, ecx, edx |
||
831 | mov [esp+36], eax |
||
832 | ret |
||
833 | @@: |
||
834 | xor eax, eax |
||
835 | not eax |
||
836 | mov [esp+36], eax |
||
837 | ret |
||
838 | |||
839 | align 4 |
||
840 | proc set_ipc_buff |
||
841 | |||
465 | serge | 842 | mov eax,[current_slot] |
164 | serge | 843 | pushf |
844 | cli |
||
465 | serge | 845 | mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
846 | mov [eax+APPDATA.ipc_size],ecx |
||
164 | serge | 847 | |
848 | add ecx, ebx |
||
849 | add ecx, 4095 |
||
850 | and ecx, not 4095 |
||
851 | |||
852 | .touch: mov eax, [ebx] |
||
853 | add ebx, 0x1000 |
||
854 | cmp ebx, ecx |
||
536 | diamond | 855 | jb .touch |
164 | serge | 856 | |
857 | popf |
||
858 | xor eax, eax |
||
859 | ret |
||
860 | endp |
||
861 | |||
862 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
||
863 | locals |
||
864 | dst_slot dd ? |
||
865 | dst_offset dd ? |
||
866 | buf_size dd ? |
||
536 | diamond | 867 | used_buf dd ? |
164 | serge | 868 | endl |
869 | |||
870 | pushf |
||
871 | cli |
||
872 | |||
873 | mov eax, [PID] |
||
874 | call pid_to_slot |
||
875 | test eax,eax |
||
876 | jz .no_pid |
||
877 | |||
878 | mov [dst_slot], eax |
||
879 | shl eax,8 |
||
380 | serge | 880 | mov edi,[eax+SLOT_BASE+0xa0] ;is ipc area defined? |
164 | serge | 881 | test edi,edi |
882 | jz .no_ipc_area |
||
883 | |||
884 | mov ebx, edi |
||
885 | and ebx, 0xFFF |
||
886 | mov [dst_offset], ebx |
||
887 | |||
380 | serge | 888 | mov esi, [eax+SLOT_BASE+0xa4] |
164 | serge | 889 | mov [buf_size], esi |
890 | |||
536 | diamond | 891 | mov ecx, [ipc_tmp] |
892 | cmp esi, 0x40000-0x1000 ; size of [ipc_tmp] minus one page |
||
893 | jbe @f |
||
894 | push eax esi edi |
||
895 | add esi,0x1000 |
||
896 | stdcall alloc_kernel_space,esi |
||
897 | mov ecx, eax |
||
898 | pop edi esi eax |
||
899 | @@: |
||
900 | mov [used_buf], ecx |
||
901 | stdcall map_mem, ecx, [SLOT_BASE+eax+0xB8],\ |
||
164 | serge | 902 | edi, esi |
903 | |||
904 | mov edi, [dst_offset] |
||
536 | diamond | 905 | add edi, [used_buf] |
164 | serge | 906 | cmp dword [edi], 0 |
907 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
227 | serge | 908 | |
566 | serge | 909 | mov edx, dword [edi+4] |
910 | lea ebx, [edx+8] |
||
164 | serge | 911 | add ebx, [msg_size] |
912 | cmp ebx, [buf_size] |
||
913 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
227 | serge | 914 | |
164 | serge | 915 | mov dword [edi+4], ebx |
916 | mov eax,[TASK_BASE] |
||
917 | mov eax, [eax+0x04] ;eax - our PID |
||
918 | add edi, edx |
||
919 | mov [edi], eax |
||
920 | mov ecx, [msg_size] |
||
921 | |||
922 | mov [edi+4], ecx |
||
923 | add edi, 8 |
||
924 | mov esi, [msg_addr] |
||
465 | serge | 925 | ; add esi, new_app_base |
164 | serge | 926 | cld |
927 | rep movsb |
||
928 | |||
929 | mov ebx, [ipc_tmp] |
||
930 | mov edx, ebx |
||
931 | shr ebx, 12 |
||
932 | xor eax, eax |
||
365 | serge | 933 | mov [page_tabs+ebx*4], eax |
164 | serge | 934 | invlpg [edx] |
935 | |||
936 | mov ebx, [ipc_pdir] |
||
937 | mov edx, ebx |
||
938 | shr ebx, 12 |
||
939 | xor eax, eax |
||
365 | serge | 940 | mov [page_tabs+ebx*4], eax |
164 | serge | 941 | invlpg [edx] |
942 | |||
943 | mov ebx, [ipc_ptab] |
||
944 | mov edx, ebx |
||
945 | shr ebx, 12 |
||
946 | xor eax, eax |
||
365 | serge | 947 | mov [page_tabs+ebx*4], eax |
164 | serge | 948 | invlpg [edx] |
949 | |||
950 | mov eax, [dst_slot] |
||
951 | shl eax, 8 |
||
380 | serge | 952 | or [eax+SLOT_BASE+0xA8],dword 0x40 |
164 | serge | 953 | cmp dword [check_idle_semaphore],20 |
954 | jge .ipc_no_cis |
||
955 | |||
956 | mov dword [check_idle_semaphore],5 |
||
957 | .ipc_no_cis: |
||
536 | diamond | 958 | push 0 |
959 | jmp .ret |
||
164 | serge | 960 | .no_pid: |
961 | popf |
||
536 | diamond | 962 | mov eax, 4 |
164 | serge | 963 | ret |
964 | .no_ipc_area: |
||
965 | popf |
||
966 | xor eax, eax |
||
967 | inc eax |
||
968 | ret |
||
969 | .ipc_blocked: |
||
536 | diamond | 970 | push 2 |
971 | jmp .ret |
||
164 | serge | 972 | .buffer_overflow: |
536 | diamond | 973 | push 3 |
974 | .ret: |
||
975 | mov eax, [used_buf] |
||
976 | cmp eax, [ipc_tmp] |
||
977 | jz @f |
||
978 | stdcall free_kernel_space,eax |
||
979 | @@: |
||
980 | pop eax |
||
164 | serge | 981 | popf |
982 | ret |
||
983 | endp |
||
984 | |||
985 | align 4 |
||
170 | serge | 986 | sysfn_meminfo: |
164 | serge | 987 | |
465 | serge | 988 | ; add ebx, new_app_base |
989 | cmp ebx, OS_BASE |
||
990 | jae .fail |
||
172 | serge | 991 | |
164 | serge | 992 | mov eax, [pg_data.pages_count] |
170 | serge | 993 | mov [ebx], eax |
172 | serge | 994 | shl eax, 12 |
995 | mov [esp+36], eax |
||
170 | serge | 996 | mov ecx, [pg_data.pages_free] |
997 | mov [ebx+4], ecx |
||
998 | mov edx, [pg_data.pages_faults] |
||
999 | mov [ebx+8], edx |
||
1000 | mov esi, [heap_size] |
||
1001 | mov [ebx+12], esi |
||
1002 | mov edi, [heap_free] |
||
1003 | mov [ebx+16], edi |
||
1004 | mov eax, [heap_blocks] |
||
1005 | mov [ebx+20], eax |
||
1006 | mov ecx, [free_blocks] |
||
1007 | mov [ebx+24], ecx |
||
164 | serge | 1008 | ret |
172 | serge | 1009 | .fail: |
1010 | mov dword [esp+36], -1 |
||
1011 | ret |
||
164 | serge | 1012 | |
1013 | align 4 |
||
1014 | new_services: |
||
1015 | |||
1016 | cmp eax,4 |
||
1017 | jle sys_sheduler |
||
1018 | |||
170 | serge | 1019 | cmp eax, 11 |
164 | serge | 1020 | jb .fail |
1021 | ja @f |
||
1022 | |||
188 | serge | 1023 | call init_heap |
164 | serge | 1024 | mov [esp+36], eax |
1025 | ret |
||
1026 | @@: |
||
1027 | cmp eax, 12 |
||
1028 | ja @f |
||
1029 | |||
1030 | stdcall user_alloc, ebx |
||
1031 | mov [esp+36], eax |
||
1032 | ret |
||
1033 | @@: |
||
1034 | cmp eax, 13 |
||
1035 | ja @f |
||
1036 | stdcall user_free, ebx |
||
1037 | mov [esp+36], eax |
||
1038 | ret |
||
1039 | @@: |
||
1040 | cmp eax, 14 |
||
1041 | ja @f |
||
465 | serge | 1042 | cmp ebx, OS_BASE |
1043 | jae .fail |
||
227 | serge | 1044 | stdcall get_event_ex, ebx, ecx |
1045 | mov [esp+36], eax |
||
164 | serge | 1046 | ret |
1047 | @@: |
||
1048 | cmp eax, 15 |
||
1049 | ja @f |
||
465 | serge | 1050 | mov ecx, [current_slot] |
1051 | mov eax, [ecx+APPDATA.fpu_handler] |
||
1052 | mov [ecx+APPDATA.fpu_handler], ebx |
||
164 | serge | 1053 | mov [esp+36], eax |
1054 | ret |
||
1055 | @@: |
||
1056 | cmp eax, 16 |
||
1057 | ja @f |
||
1058 | |||
188 | serge | 1059 | test ebx, ebx |
1060 | jz .fail |
||
465 | serge | 1061 | cmp ebx, OS_BASE |
1062 | jae .fail |
||
164 | serge | 1063 | stdcall get_service, ebx |
1064 | mov [esp+36], eax |
||
1065 | ret |
||
1066 | @@: |
||
1067 | cmp eax, 17 |
||
1068 | ja @f |
||
378 | serge | 1069 | call srv_handlerEx ;ebx |
164 | serge | 1070 | mov [esp+36], eax |
1071 | ret |
||
168 | serge | 1072 | @@: |
1073 | cmp eax, 18 |
||
1074 | ja @f |
||
465 | serge | 1075 | mov ecx, [current_slot] |
1076 | mov eax, [ecx+APPDATA.sse_handler] |
||
1077 | mov [ecx+APPDATA.sse_handler], ebx |
||
168 | serge | 1078 | mov [esp+36], eax |
1079 | ret |
||
164 | serge | 1080 | @@: |
198 | serge | 1081 | cmp eax, 19 |
448 | diamond | 1082 | ja @f |
465 | serge | 1083 | cmp ebx, OS_BASE |
1084 | jae .fail |
||
198 | serge | 1085 | stdcall load_library, ebx |
1086 | mov [esp+36], eax |
||
1087 | ret |
||
448 | diamond | 1088 | @@: |
490 | serge | 1089 | cmp eax, 20 |
740 | serge | 1090 | ja @F |
490 | serge | 1091 | mov eax, ecx |
1092 | call user_realloc |
||
1093 | mov [esp+36], eax |
||
1094 | ret |
||
740 | serge | 1095 | @@: |
747 | serge | 1096 | cmp eax, 21 ;for test purposes only |
1097 | ja @f ;will be removed soon |
||
740 | serge | 1098 | cmp ebx, OS_BASE |
1099 | jae .fail |
||
1100 | |||
1101 | stdcall load_PE, ebx |
||
1102 | |||
1103 | test eax, eax |
||
1104 | jz @F |
||
1105 | |||
1106 | mov esi, eax |
||
1107 | stdcall eax, DRV_ENTRY |
||
1108 | |||
1109 | test eax, eax |
||
1110 | jz @F |
||
1111 | |||
1112 | mov [eax+SRV.entry], esi |
||
1113 | |||
1114 | @@: |
||
1115 | mov [esp+36], eax |
||
1116 | ret |
||
1117 | |||
1118 | |||
164 | serge | 1119 | .fail: |
1120 | xor eax, eax |
||
1121 | mov [esp+36], eax |
||
1122 | ret |
||
1123 | |||
1124 | align 4 |
||
819 | serge | 1125 | proc load_pe_driver stdcall, file:dword |
1126 | |||
1127 | stdcall load_PE, [file] |
||
1128 | test eax, eax |
||
1129 | jz .fail |
||
1130 | |||
1131 | mov esi, eax |
||
1132 | stdcall eax, DRV_ENTRY |
||
1133 | test eax, eax |
||
1134 | jz .fail |
||
1135 | |||
1136 | mov [eax+SRV.entry], esi |
||
1137 | ret |
||
1138 | |||
1139 | .fail: |
||
1140 | xor eax, eax |
||
1141 | ret |
||
1142 | endp |
||
1143 | |||
1144 | |||
1145 | align 4 |
||
164 | serge | 1146 | proc init_mtrr |
1147 | |||
412 | serge | 1148 | cmp [BOOT_VAR+0x901c],byte 2 |
164 | serge | 1149 | je .exit |
1150 | |||
211 | serge | 1151 | bt [cpu_caps], CAPS_MTRR |
1152 | jnc .exit |
||
1153 | |||
164 | serge | 1154 | mov eax, cr0 |
1155 | or eax, 0x60000000 ;disable caching |
||
1156 | mov cr0, eax |
||
1157 | wbinvd ;invalidate cache |
||
1158 | |||
1159 | mov ecx, 0x2FF |
||
1160 | rdmsr ; |
||
1161 | push eax |
||
1162 | |||
1163 | xor edx, edx |
||
1164 | xor eax, eax |
||
1165 | mov ecx, 0x2FF |
||
1166 | wrmsr ;disable all MTRR |
||
1167 | |||
821 | diamond | 1168 | mov eax, [MEM_AMOUNT] |
1169 | ; round eax up to next power of 2 |
||
1170 | dec eax |
||
1171 | bsr ecx, eax |
||
1172 | mov eax, 2 |
||
1173 | shl eax, cl |
||
1174 | stdcall set_mtrr, edx,edx,eax,MEM_WB |
||
1175 | stdcall set_mtrr, 1,[LFBAddress],[LFBSize],MEM_WC |
||
164 | serge | 1176 | xor edx, edx |
1177 | xor eax, eax |
||
1178 | mov ecx, 0x204 |
||
1179 | mov ebx, 6 |
||
1180 | @@: |
||
1181 | wrmsr ;disable unused MTRR |
||
1182 | inc ecx |
||
1183 | wrmsr |
||
1184 | inc ecx |
||
1185 | dec ebx |
||
1186 | jnz @b |
||
1187 | |||
1188 | wbinvd ;again invalidate |
||
1189 | |||
1190 | pop eax |
||
1191 | or eax, 0x800 ;set default memtype to UC |
||
1192 | and al, 0xF0 |
||
1193 | mov ecx, 0x2FF |
||
1194 | wrmsr ;and enable MTRR |
||
1195 | |||
1196 | mov eax, cr0 |
||
1197 | and eax, not 0x60000000 |
||
1198 | mov cr0, eax ; enable caching |
||
1199 | .exit: |
||
1200 | ret |
||
1201 | endp |
||
1202 | |||
1203 | align 4 |
||
1204 | proc set_mtrr stdcall, reg:dword,base:dword,size:dword,mem_type:dword |
||
1205 | |||
1206 | xor edx, edx |
||
1207 | mov eax, [base] |
||
1208 | or eax, [mem_type] |
||
1209 | mov ecx, [reg] |
||
1210 | lea ecx, [0x200+ecx*2] |
||
1211 | wrmsr |
||
1212 | |||
1213 | mov ebx, [size] |
||
1214 | dec ebx |
||
1215 | mov eax, 0xFFFFFFFF |
||
1216 | mov edx, 0x0000000F |
||
1217 | sub eax, ebx |
||
1218 | sbb edx, 0 |
||
1219 | or eax, 0x800 |
||
1220 | inc ecx |
||
1221 | wrmsr |
||
1222 | ret |
||
1223 | endp |
||
1224 | |||
465 | serge | 1225 | align 4 |
172 | serge | 1226 | proc stall stdcall, delay:dword |
1227 | push ecx |
||
1228 | push edx |
||
1229 | push ebx |
||
1230 | push eax |
||
1231 | |||
1232 | mov eax, [delay] |
||
1233 | mul [stall_mcs] |
||
1234 | mov ebx, eax ;low |
||
1235 | mov ecx, edx ;high |
||
1236 | rdtsc |
||
1237 | add ebx, eax |
||
1238 | adc ecx,edx |
||
1239 | @@: |
||
1240 | rdtsc |
||
1241 | sub eax, ebx |
||
1242 | sbb edx, ecx |
||
1243 | jb @B |
||
1244 | |||
1245 | pop eax |
||
1246 | pop ebx |
||
1247 | pop edx |
||
1248 | pop ecx |
||
1249 | ret |
||
1250 | endp |
||
1251 | |||
520 | serge | 1252 | align 4 |
1253 | proc create_ring_buffer stdcall, size:dword, flags:dword |
||
1254 | locals |
||
1255 | buf_ptr dd ? |
||
1256 | endl |
||
237 | serge | 1257 | |
520 | serge | 1258 | mov eax, [size] |
1259 | test eax, eax |
||
1260 | jz .fail |
||
1261 | |||
1262 | add eax, eax |
||
1263 | stdcall alloc_kernel_space, eax |
||
1264 | test eax, eax |
||
1265 | jz .fail |
||
1266 | |||
662 | serge | 1267 | push ebx |
1268 | |||
520 | serge | 1269 | mov [buf_ptr], eax |
1270 | |||
1271 | mov ebx, [size] |
||
1272 | shr ebx, 12 |
||
1273 | push ebx |
||
1274 | |||
1275 | stdcall alloc_pages, ebx |
||
1276 | pop ecx |
||
1277 | |||
1278 | test eax, eax |
||
1279 | jz .mm_fail |
||
1280 | |||
662 | serge | 1281 | push edi |
1282 | |||
520 | serge | 1283 | or eax, [flags] |
1284 | mov edi, [buf_ptr] |
||
1285 | mov ebx, [buf_ptr] |
||
1286 | mov edx, ecx |
||
566 | serge | 1287 | shl edx, 2 |
520 | serge | 1288 | shr edi, 10 |
1289 | @@: |
||
1290 | mov [page_tabs+edi], eax |
||
1291 | mov [page_tabs+edi+edx], eax |
||
1292 | add eax, 0x1000 |
||
1293 | add ebx, 0x1000 |
||
566 | serge | 1294 | add edi, 4 |
520 | serge | 1295 | dec ecx |
1296 | jnz @B |
||
1297 | |||
1298 | mov eax, [buf_ptr] |
||
662 | serge | 1299 | pop edi |
1300 | pop ebx |
||
520 | serge | 1301 | ret |
1302 | .mm_fail: |
||
1303 | stdcall free_kernel_space, [buf_ptr] |
||
1304 | xor eax, eax |
||
662 | serge | 1305 | pop ebx |
520 | serge | 1306 | .fail: |
1307 | ret |
||
1308 | endp0>> |
||
1309 |