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