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