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Rev | Author | Line No. | Line |
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430 | serge | 1 | ; $Revision$ |
164 | serge | 2 | |
3 | align 4 |
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4 | proc alloc_page |
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5 | |||
6 | pushfd |
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7 | cli |
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8 | mov ebx, [page_start] |
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9 | mov ecx, [page_end] |
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10 | .l1: |
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11 | bsf eax,[ebx]; |
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12 | jnz .found |
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13 | add ebx,4 |
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14 | cmp ebx, ecx |
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15 | jb .l1 |
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16 | popfd |
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17 | xor eax,eax |
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18 | ret |
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19 | .found: |
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20 | btr [ebx], eax |
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21 | mov [page_start],ebx |
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22 | sub ebx, sys_pgmap |
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254 | serge | 23 | lea eax, [eax+ebx*8] |
164 | serge | 24 | shl eax, 12 |
25 | dec [pg_data.pages_free] |
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26 | popfd |
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27 | ret |
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28 | endp |
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29 | |||
30 | align 4 |
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31 | proc alloc_pages stdcall, count:dword |
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32 | pushfd |
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33 | cli |
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34 | mov eax, [count] |
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35 | add eax, 7 |
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36 | shr eax, 3 |
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37 | mov [count], eax |
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38 | cmp eax, [pg_data.pages_free] |
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39 | ja .fail |
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40 | |||
41 | mov ecx, [page_start] |
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42 | mov ebx, [page_end] |
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43 | .find: |
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44 | mov edx, [count] |
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45 | mov edi, ecx |
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46 | .match: |
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47 | cmp byte [ecx], 0xFF |
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48 | jne .next |
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49 | dec edx |
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50 | jz .ok |
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51 | inc ecx |
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52 | cmp ecx,ebx |
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53 | jb .match |
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54 | .fail: xor eax, eax |
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55 | popfd |
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56 | ret |
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57 | .next: |
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58 | inc ecx |
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59 | cmp ecx, ebx |
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60 | jb .find |
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61 | popfd |
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62 | xor eax, eax |
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63 | ret |
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64 | .ok: |
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65 | sub ecx, edi |
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66 | inc ecx |
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67 | mov esi, edi |
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68 | xor eax, eax |
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69 | rep stosb |
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70 | sub esi, sys_pgmap |
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71 | shl esi, 3+12 |
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72 | mov eax, esi |
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73 | mov ebx, [count] |
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74 | shl ebx, 3 |
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75 | sub [pg_data.pages_free], ebx |
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76 | popfd |
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77 | ret |
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78 | endp |
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79 | |||
80 | align 4 |
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81 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
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321 | diamond | 82 | push ebx |
164 | serge | 83 | mov eax, [phis_addr] |
84 | and eax, not 0xFFF |
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85 | or eax, [flags] |
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86 | mov ebx, [lin_addr] |
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87 | shr ebx, 12 |
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365 | serge | 88 | mov [page_tabs+ebx*4], eax |
164 | serge | 89 | mov eax, [lin_addr] |
90 | invlpg [eax] |
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321 | diamond | 91 | pop ebx |
164 | serge | 92 | ret |
93 | endp |
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94 | |||
95 | align 4 |
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281 | serge | 96 | map_space: ;not implemented |
97 | |||
98 | |||
99 | ret |
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100 | |||
101 | |||
102 | align 4 |
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164 | serge | 103 | proc free_page |
104 | ;arg: eax page address |
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105 | pushfd |
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106 | cli |
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107 | shr eax, 12 ;page index |
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108 | mov ebx, sys_pgmap |
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109 | bts [ebx], eax ;that's all! |
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291 | serge | 110 | cmc |
328 | serge | 111 | adc [pg_data.pages_free], 0 |
164 | serge | 112 | shr eax, 3 |
113 | and eax, not 3 ;dword offset from page_map |
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114 | add eax, ebx |
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115 | cmp [page_start], eax |
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116 | ja @f |
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117 | popfd |
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118 | ret |
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119 | @@: |
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120 | mov [page_start], eax |
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121 | popfd |
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122 | ret |
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123 | endp |
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124 | |||
279 | serge | 125 | ; param |
328 | serge | 126 | ; eax= page base + page flags |
281 | serge | 127 | ; ebx= liear address |
128 | ; ecx= count |
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129 | |||
130 | align 4 |
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328 | serge | 131 | commit_pages: |
281 | serge | 132 | |
328 | serge | 133 | test ecx, ecx |
134 | jz .fail |
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281 | serge | 135 | |
328 | serge | 136 | mov edi, ebx |
137 | mov ebx, pg_data.pg_mutex |
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138 | call wait_mutex ;ebx |
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139 | |||
140 | mov edx, 0x1000 |
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141 | mov ebx, edi |
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142 | shr ebx, 12 |
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143 | @@: |
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365 | serge | 144 | mov [page_tabs+ebx*4], eax |
328 | serge | 145 | invlpg [edi] |
146 | add edi, edx |
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147 | add eax, edx |
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148 | inc ebx |
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149 | dec ecx |
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150 | jnz @B |
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151 | mov [pg_data.pg_mutex],ecx |
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152 | .fail: |
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281 | serge | 153 | ret |
154 | |||
328 | serge | 155 | |
281 | serge | 156 | ; param |
279 | serge | 157 | ; eax= base |
281 | serge | 158 | ; ecx= count |
279 | serge | 159 | |
164 | serge | 160 | align 4 |
279 | serge | 161 | release_pages: |
321 | diamond | 162 | |
163 | pushad |
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279 | serge | 164 | mov ebx, pg_data.pg_mutex |
165 | call wait_mutex ;ebx |
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166 | |||
167 | mov esi, eax |
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168 | mov edi, eax |
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169 | |||
170 | shr esi, 10 |
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365 | serge | 171 | add esi, page_tabs |
328 | serge | 172 | |
173 | mov ebp, [pg_data.pages_free] |
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279 | serge | 174 | mov ebx, [page_start] |
175 | mov edx, sys_pgmap |
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176 | @@: |
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177 | xor eax, eax |
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178 | xchg eax, [esi] |
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179 | invlpg [edi] |
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180 | |||
181 | test eax, 1 |
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182 | jz .next |
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183 | |||
184 | shr eax, 12 |
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185 | bts [edx], eax |
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291 | serge | 186 | cmc |
328 | serge | 187 | adc ebp, 0 |
279 | serge | 188 | shr eax, 3 |
189 | and eax, -4 |
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190 | add eax, edx |
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191 | cmp eax, ebx |
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192 | jae .next |
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193 | |||
194 | mov ebx, eax |
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195 | .next: |
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196 | add edi, 0x1000 |
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197 | add esi, 4 |
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198 | dec ecx |
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199 | jnz @B |
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328 | serge | 200 | mov [pg_data.pages_free], ebp |
279 | serge | 201 | and [pg_data.pg_mutex],0 |
321 | diamond | 202 | popad |
279 | serge | 203 | ret |
204 | |||
205 | align 4 |
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188 | serge | 206 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
321 | diamond | 207 | push ebx |
164 | serge | 208 | mov ebx, [lin_addr] |
209 | shr ebx, 22 |
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210 | mov eax, [phis_addr] |
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211 | and eax, not 0xFFF |
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212 | or eax, PG_UW ;+PG_NOCACHE |
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378 | serge | 213 | mov dword [master_tab+ebx*4], eax |
164 | serge | 214 | mov eax, [lin_addr] |
215 | shr eax, 10 |
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365 | serge | 216 | add eax, page_tabs |
164 | serge | 217 | invlpg [eax] |
321 | diamond | 218 | pop ebx |
164 | serge | 219 | ret |
220 | endp |
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221 | |||
222 | align 4 |
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223 | proc init_LFB |
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378 | serge | 224 | locals |
225 | pg_count dd ? |
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226 | endl |
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227 | |||
164 | serge | 228 | cmp dword [LFBAddress], -1 |
229 | jne @f |
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388 | serge | 230 | mov [BOOT_VAR+0x901c],byte 2 |
164 | serge | 231 | stdcall kernel_alloc, 0x280000 |
232 | mov [LFBAddress], eax |
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233 | ret |
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234 | @@: |
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235 | test [SCR_MODE],word 0100000000000000b |
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211 | serge | 236 | jnz @f |
388 | serge | 237 | mov [BOOT_VAR+0x901c],byte 2 |
211 | serge | 238 | ret |
239 | @@: |
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378 | serge | 240 | mov edx, LFB_BASE |
241 | mov esi, [LFBAddress] |
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388 | serge | 242 | mov edi, 0x00800000 |
379 | serge | 243 | mov dword [exp_lfb+4], edx |
214 | serge | 244 | |
164 | serge | 245 | shr edi, 12 |
246 | mov [pg_count], edi |
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247 | shr edi, 10 |
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248 | |||
249 | bt [cpu_caps], CAPS_PSE |
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250 | jnc .map_page_tables |
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251 | or esi, PG_LARGE+PG_UW |
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400 | serge | 252 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
164 | serge | 253 | @@: |
400 | serge | 254 | mov [edx], esi |
378 | serge | 255 | add edx, 4 |
164 | serge | 256 | add esi, 0x00400000 |
257 | dec edi |
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258 | jnz @B |
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259 | |||
207 | serge | 260 | bt [cpu_caps], CAPS_PGE |
261 | jnc @F |
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400 | serge | 262 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
207 | serge | 263 | @@: |
378 | serge | 264 | mov dword [LFBAddress], LFB_BASE |
164 | serge | 265 | mov eax, cr3 ;flush TLB |
266 | mov cr3, eax |
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267 | ret |
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268 | |||
269 | .map_page_tables: |
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270 | |||
271 | @@: |
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272 | call alloc_page |
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378 | serge | 273 | stdcall map_page_table, edx, eax |
388 | serge | 274 | add edx, 0x00400000 |
164 | serge | 275 | dec edi |
276 | jnz @B |
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277 | |||
278 | mov eax, [LFBAddress] |
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378 | serge | 279 | mov edi, page_tabs + (LFB_BASE shr 10) |
164 | serge | 280 | or eax, PG_UW |
281 | mov ecx, [pg_count] |
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378 | serge | 282 | cld |
388 | serge | 283 | @@: |
284 | stosd |
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285 | add eax, 0x1000 |
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286 | dec ecx |
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287 | jnz @B |
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164 | serge | 288 | |
378 | serge | 289 | mov dword [LFBAddress], LFB_BASE |
164 | serge | 290 | mov eax, cr3 ;flush TLB |
291 | mov cr3, eax |
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292 | |||
293 | ret |
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294 | endp |
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295 | |||
296 | align 4 |
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297 | proc new_mem_resize stdcall, new_size:dword |
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298 | |||
276 | serge | 299 | mov ebx, pg_data.pg_mutex |
300 | call wait_mutex ;ebx |
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164 | serge | 301 | |
302 | mov edi, [new_size] |
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303 | add edi,4095 |
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304 | and edi,not 4095 |
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305 | mov [new_size], edi |
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306 | |||
427 | serge | 307 | mov edx,[current_slot] |
308 | cmp [edx+APPDATA.heap_base],0 |
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172 | serge | 309 | jne .exit |
310 | |||
427 | serge | 311 | mov esi, [edx+APPDATA.mem_size] |
164 | serge | 312 | add esi, 4095 |
313 | and esi, not 4095 |
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314 | |||
315 | cmp edi, esi |
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316 | jae .expand |
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317 | |||
318 | shr edi, 12 |
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319 | shr esi, 12 |
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320 | @@: |
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378 | serge | 321 | mov eax, [app_page_tabs+edi*4] |
164 | serge | 322 | test eax, 1 |
323 | jz .next |
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378 | serge | 324 | mov dword [app_page_tabs+edi*4], 2 |
164 | serge | 325 | mov ebx, edi |
326 | shl ebx, 12 |
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327 | invlpg [ebx+std_application_base_address] |
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328 | call free_page |
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329 | |||
330 | .next: add edi, 1 |
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331 | cmp edi, esi |
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332 | jb @B |
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333 | |||
334 | .update_size: |
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427 | serge | 335 | mov ebx, [new_size] |
336 | call update_mem_size |
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164 | serge | 337 | |
338 | xor eax, eax |
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339 | dec [pg_data.pg_mutex] |
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340 | ret |
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341 | .expand: |
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342 | |||
343 | push esi |
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344 | push edi |
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345 | |||
346 | add edi, 0x3FFFFF |
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347 | and edi, not(0x3FFFFF) |
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348 | add esi, 0x3FFFFF |
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349 | and esi, not(0x3FFFFF) |
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350 | |||
351 | cmp esi, edi |
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352 | jae .grow |
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353 | |||
354 | xchg esi, edi |
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355 | |||
356 | @@: |
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357 | call alloc_page |
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358 | test eax, eax |
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359 | jz .exit |
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360 | |||
188 | serge | 361 | stdcall map_page_table, edi, eax |
164 | serge | 362 | |
363 | push edi |
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364 | shr edi, 10 |
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365 | serge | 365 | add edi, page_tabs |
164 | serge | 366 | mov ecx, 1024 |
367 | xor eax, eax |
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368 | cld |
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369 | rep stosd |
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370 | pop edi |
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371 | |||
372 | add edi, 0x00400000 |
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373 | cmp edi, esi |
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374 | jb @B |
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375 | .grow: |
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376 | pop edi |
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377 | pop esi |
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378 | @@: |
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379 | call alloc_page |
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380 | test eax, eax |
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381 | jz .exit |
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382 | stdcall map_page,esi,eax,dword PG_UW |
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383 | |||
384 | push edi |
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385 | mov edi, esi |
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386 | xor eax, eax |
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387 | mov ecx, 1024 |
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388 | cld |
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389 | rep stosd |
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390 | pop edi |
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391 | |||
392 | add esi, 0x1000 |
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393 | cmp esi, edi |
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294 | diamond | 394 | jb @B |
164 | serge | 395 | |
396 | jmp .update_size |
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397 | .exit: |
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398 | xor eax, eax |
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399 | inc eax |
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400 | dec [pg_data.pg_mutex] |
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401 | ret |
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402 | endp |
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403 | |||
294 | diamond | 404 | update_mem_size: |
427 | serge | 405 | ; in: edx = slot base |
294 | diamond | 406 | ; ebx = new memory size |
407 | ; destroys eax,ecx,edx |
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408 | |||
427 | serge | 409 | mov [APPDATA.mem_size+edx],ebx |
294 | diamond | 410 | ;search threads and update |
411 | ;application memory size infomation |
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427 | serge | 412 | mov ecx,[APPDATA.dir_table+edx] |
294 | diamond | 413 | mov eax,2 |
414 | |||
415 | .search_threads: |
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416 | ;eax = current slot |
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417 | ;ebx = new memory size |
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418 | ;ecx = page directory |
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419 | cmp eax,[TASK_COUNT] |
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420 | jg .search_threads_end |
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421 | mov edx,eax |
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422 | shl edx,5 |
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423 | cmp word [CURRENT_TASK+edx+TASKDATA.state],9 ;if slot empty? |
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424 | jz .search_threads_next |
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425 | shl edx,3 |
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380 | serge | 426 | cmp [SLOT_BASE+edx+APPDATA.dir_table],ecx ;if it is our thread? |
294 | diamond | 427 | jnz .search_threads_next |
380 | serge | 428 | mov [SLOT_BASE+edx+APPDATA.mem_size],ebx ;update memory size |
294 | diamond | 429 | .search_threads_next: |
430 | inc eax |
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431 | jmp .search_threads |
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432 | .search_threads_end: |
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433 | ret |
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434 | |||
285 | serge | 435 | ; param |
436 | ; eax= linear address |
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437 | ; |
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438 | ; retval |
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439 | ; eax= phisical page address |
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440 | |||
164 | serge | 441 | align 4 |
285 | serge | 442 | get_pg_addr: |
443 | shr eax, 12 |
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365 | serge | 444 | mov eax, [page_tabs+eax*4] |
164 | serge | 445 | and eax, 0xFFFFF000 |
446 | ret |
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447 | |||
418 | serge | 448 | |
188 | serge | 449 | align 4 |
164 | serge | 450 | proc page_fault_handler |
418 | serge | 451 | |
452 | .err_code equ ebp+32 |
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453 | .err_addr equ ebp-4 |
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454 | |||
164 | serge | 455 | pushad |
456 | mov ebp, esp |
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457 | mov eax, cr2 |
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172 | serge | 458 | push eax |
164 | serge | 459 | |
427 | serge | 460 | mov ax, app_data |
164 | serge | 461 | mov ds, ax |
188 | serge | 462 | mov es, ax |
164 | serge | 463 | |
188 | serge | 464 | inc [pg_data.pages_faults] |
465 | |||
427 | serge | 466 | push eax |
467 | push edx |
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468 | mov edx, 0x400 ;bochs |
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469 | mov al,0xff ;bochs |
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470 | out dx, al ;bochs |
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471 | pop edx |
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472 | pop eax |
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473 | |||
418 | serge | 474 | mov ebx, [.err_addr] |
419 | serge | 475 | mov eax, [.err_code] |
164 | serge | 476 | |
419 | serge | 477 | cmp ebx, OS_BASE |
427 | serge | 478 | jb .user_space ;ñòðàíèöà â ïàìÿòè ïðèëîæåíèÿ ; |
164 | serge | 479 | |
419 | serge | 480 | cmp ebx, page_tabs |
481 | jb .kernel_space ;ñòðàíèöà â ïàìÿòè ÿäðà |
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394 | serge | 482 | |
419 | serge | 483 | cmp ebx, kernel_tabs |
427 | serge | 484 | jb .alloc;.app_tabs ;òàáëèöû ñòðàíèö ïðèëîæåíèÿ ; |
419 | serge | 485 | ;ïðîñòî ñîçäàäèì îäíó |
188 | serge | 486 | |
419 | serge | 487 | cmp ebx, LFB_BASE |
488 | jb .core_tabs ;òàáëèöû ñòðàíèö ÿäðà |
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489 | ;Îøèáêà |
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490 | .lfb: |
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491 | ;îáëàñòü LFB |
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492 | ;Îøèáêà |
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493 | jmp .fail |
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378 | serge | 494 | |
419 | serge | 495 | align 4 |
496 | .user_space: |
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497 | test eax, PG_MAP |
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498 | jnz .err_access ;Ñòðàíèöà ïðèñóòñòâóåò |
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499 | ;Îøèáêà äîñòóïà ? |
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395 | serge | 500 | |
164 | serge | 501 | shr ebx, 12 |
172 | serge | 502 | mov ecx, ebx |
503 | shr ecx, 10 |
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504 | mov edx, [master_tab+ecx*4] |
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419 | serge | 505 | test edx, PG_MAP |
506 | jz .fail ;òàáëèöà ñòðàíèö íå ñîçäàíà |
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507 | ;íåâåðíûé àäðåñ â ïðîãðàììå |
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172 | serge | 508 | |
365 | serge | 509 | mov eax, [page_tabs+ebx*4] |
164 | serge | 510 | test eax, 2 |
427 | serge | 511 | jz .fail ;àäðåñ íå çàðåçåðâèðîâàí äëÿ ; |
419 | serge | 512 | ;èñïîëüçîâàíèÿ. Îøèáêà |
188 | serge | 513 | .alloc: |
164 | serge | 514 | call alloc_page |
515 | and eax, eax |
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419 | serge | 516 | jz .fail |
164 | serge | 517 | |
518 | stdcall map_page,[ebp-4],eax,dword PG_UW |
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519 | |||
188 | serge | 520 | mov edi, [ebp-4] |
521 | and edi, 0xFFFFF000 |
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164 | serge | 522 | mov ecx, 1024 |
523 | xor eax, eax |
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188 | serge | 524 | cld |
525 | rep stosd |
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164 | serge | 526 | .exit: |
527 | mov esp, ebp |
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528 | popad |
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529 | add esp, 4 |
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530 | iretd |
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419 | serge | 531 | |
532 | .err_access: |
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533 | ;íèêîãäà íå ïðîèñõîäèò |
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534 | jmp .fail |
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535 | |||
536 | .kernel_space: |
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537 | test eax, PG_MAP |
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538 | jz .fail ;ñòðàíèöà íå ïðèñóòñòâóåò |
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539 | |||
540 | test eax, 4 ;U/S |
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541 | jnz .fail ;ïðèëîæåíèå îáðàòèëîñü ê ïàìÿòè |
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542 | ;ÿäðà |
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543 | test eax, 8 |
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544 | jnz .fail ;óñòàíîâëåí çàðåçåðâèðîâàííûé áèò |
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545 | ;â òàáëèöàõ ñòðàíèö. äîáàâëåíî â P4/Xeon |
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546 | |||
547 | ;ïîïûòêà çàïèñè â çàùèù¸ííóþ ñòðàíèöó ÿäðà |
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430 | serge | 548 | |
549 | cmp ebx, tss._io_map_0 |
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550 | jb .fail |
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551 | |||
552 | cmp ebx, tss._io_map_0+8192 |
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553 | jae .fail |
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554 | |||
555 | ; io permission map |
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556 | ; copy-on-write protection |
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557 | |||
558 | call alloc_page |
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559 | and eax, eax |
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560 | jz .fail |
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561 | |||
562 | push eax |
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563 | stdcall map_page,[ebp-4],eax,dword PG_SW |
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564 | pop eax |
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565 | mov edi, [.err_addr] |
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566 | and edi, -4096 |
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567 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
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568 | |||
569 | mov ebx, esi |
||
570 | shr ebx, 12 |
||
571 | mov edx, [current_slot] |
||
572 | or eax, PG_SW |
||
573 | mov [edx+APPDATA.io_map+ebx*4], eax |
||
574 | |||
575 | add esi, [default_io_map] |
||
576 | mov ecx, 4096/4 |
||
577 | cld |
||
578 | rep movsd |
||
579 | jmp .exit |
||
580 | |||
581 | |||
419 | serge | 582 | ;íå îáðàáàòûâàåì. Îøèáêà |
583 | |||
584 | .core_tabs: |
||
172 | serge | 585 | .fail: |
586 | mov esp, ebp |
||
587 | popad |
||
588 | add esp, 4 |
||
388 | serge | 589 | iretd |
164 | serge | 590 | |
172 | serge | 591 | save_ring3_context ;debugger support |
592 | |||
593 | mov bl, 14 |
||
594 | jmp exc_c |
||
595 | iretd |
||
164 | serge | 596 | endp |
597 | |||
598 | align 4 |
||
599 | proc map_mem stdcall, lin_addr:dword,pdir:dword,\ |
||
600 | ofs:dword,buf_size:dword |
||
601 | mov eax, [buf_size] |
||
602 | test eax, eax |
||
603 | jz .exit |
||
604 | |||
605 | mov eax, [pdir] |
||
606 | and eax, 0xFFFFF000 |
||
607 | |||
608 | stdcall map_page,[ipc_pdir],eax,dword PG_UW |
||
609 | mov ebx, [ofs] |
||
610 | shr ebx, 22 |
||
611 | mov esi, [ipc_pdir] |
||
612 | mov edi, [ipc_ptab] |
||
613 | mov eax, [esi+ebx*4] |
||
614 | and eax, 0xFFFFF000 |
||
615 | test eax, eax |
||
616 | jz .exit |
||
617 | stdcall map_page,edi,eax,dword PG_UW |
||
618 | ; inc ebx |
||
619 | ; add edi, 0x1000 |
||
620 | ; mov eax, [esi+ebx*4] |
||
621 | ; test eax, eax |
||
622 | ; jz @f |
||
623 | ; and eax, 0xFFFFF000 |
||
624 | ; stdcall map_page, edi, eax |
||
625 | |||
626 | @@: mov edi, [lin_addr] |
||
627 | and edi, 0xFFFFF000 |
||
628 | mov ecx, [buf_size] |
||
629 | add ecx, 4095 |
||
630 | shr ecx, 12 |
||
631 | inc ecx |
||
632 | |||
633 | mov edx, [ofs] |
||
634 | shr edx, 12 |
||
635 | and edx, 0x3FF |
||
636 | mov esi, [ipc_ptab] |
||
637 | |||
638 | .map: mov eax, [esi+edx*4] |
||
639 | and eax, 0xFFFFF000 |
||
640 | test eax, eax |
||
641 | jz .exit |
||
642 | stdcall map_page,edi,eax,dword PG_UW |
||
643 | add edi, 0x1000 |
||
644 | inc edx |
||
645 | dec ecx |
||
646 | jnz .map |
||
647 | |||
648 | .exit: |
||
649 | ret |
||
650 | endp |
||
651 | |||
652 | align 4 |
||
653 | proc map_memEx stdcall, lin_addr:dword,pdir:dword,\ |
||
654 | ofs:dword,buf_size:dword |
||
655 | mov eax, [buf_size] |
||
656 | test eax, eax |
||
657 | jz .exit |
||
658 | |||
659 | mov eax, [pdir] |
||
660 | and eax, 0xFFFFF000 |
||
661 | |||
662 | stdcall map_page,[proc_mem_pdir],eax,dword PG_UW |
||
663 | mov ebx, [ofs] |
||
664 | shr ebx, 22 |
||
665 | mov esi, [proc_mem_pdir] |
||
666 | mov edi, [proc_mem_tab] |
||
667 | mov eax, [esi+ebx*4] |
||
668 | and eax, 0xFFFFF000 |
||
669 | test eax, eax |
||
670 | jz .exit |
||
671 | stdcall map_page,edi,eax,dword PG_UW |
||
672 | |||
673 | @@: mov edi, [lin_addr] |
||
674 | and edi, 0xFFFFF000 |
||
675 | mov ecx, [buf_size] |
||
676 | add ecx, 4095 |
||
677 | shr ecx, 12 |
||
678 | inc ecx |
||
679 | |||
680 | mov edx, [ofs] |
||
681 | shr edx, 12 |
||
682 | and edx, 0x3FF |
||
683 | mov esi, [proc_mem_tab] |
||
684 | |||
685 | .map: mov eax, [esi+edx*4] |
||
686 | ; and eax, 0xFFFFF000 |
||
687 | ; test eax, eax |
||
688 | ; jz .exit |
||
689 | stdcall map_page,edi,eax,dword PG_UW |
||
690 | add edi, 0x1000 |
||
691 | inc edx |
||
692 | dec ecx |
||
693 | jnz .map |
||
694 | .exit: |
||
695 | ret |
||
696 | endp |
||
697 | |||
698 | |||
699 | |||
700 | |||
701 | sys_IPC: |
||
702 | ;input: |
||
703 | ; eax=1 - set ipc buffer area |
||
704 | ; ebx=address of buffer |
||
705 | ; ecx=size of buffer |
||
706 | ; eax=2 - send message |
||
707 | ; ebx=PID |
||
708 | ; ecx=address of message |
||
709 | ; edx=size of message |
||
710 | |||
711 | cmp eax,1 |
||
712 | jne @f |
||
713 | call set_ipc_buff |
||
714 | mov [esp+36], eax |
||
715 | ret |
||
716 | @@: |
||
717 | cmp eax, 2 |
||
718 | jne @f |
||
719 | stdcall sys_ipc_send, ebx, ecx, edx |
||
720 | mov [esp+36], eax |
||
721 | ret |
||
722 | @@: |
||
723 | xor eax, eax |
||
724 | not eax |
||
725 | mov [esp+36], eax |
||
726 | ret |
||
727 | |||
728 | align 4 |
||
729 | proc set_ipc_buff |
||
730 | |||
427 | serge | 731 | mov eax,[current_slot] |
164 | serge | 732 | pushf |
733 | cli |
||
427 | serge | 734 | mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
735 | mov [eax+APPDATA.ipc_size],ecx |
||
164 | serge | 736 | |
737 | add ecx, ebx |
||
738 | add ecx, 4095 |
||
739 | and ecx, not 4095 |
||
740 | |||
741 | .touch: mov eax, [ebx] |
||
742 | add ebx, 0x1000 |
||
743 | cmp ebx, ecx |
||
744 | jna .touch |
||
745 | |||
746 | popf |
||
747 | xor eax, eax |
||
748 | ret |
||
749 | endp |
||
750 | |||
751 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
||
752 | locals |
||
753 | dst_slot dd ? |
||
754 | dst_offset dd ? |
||
755 | buf_size dd ? |
||
756 | endl |
||
757 | |||
758 | pushf |
||
759 | cli |
||
760 | |||
761 | mov eax, [PID] |
||
762 | call pid_to_slot |
||
763 | test eax,eax |
||
764 | jz .no_pid |
||
765 | |||
766 | mov [dst_slot], eax |
||
767 | shl eax,8 |
||
380 | serge | 768 | mov edi,[eax+SLOT_BASE+0xa0] ;is ipc area defined? |
164 | serge | 769 | test edi,edi |
770 | jz .no_ipc_area |
||
771 | |||
772 | mov ebx, edi |
||
419 | serge | 773 | ; add edi, new_app_base |
164 | serge | 774 | and ebx, 0xFFF |
775 | mov [dst_offset], ebx |
||
776 | |||
380 | serge | 777 | mov esi, [eax+SLOT_BASE+0xa4] |
164 | serge | 778 | mov [buf_size], esi |
779 | |||
380 | serge | 780 | stdcall map_mem, [ipc_tmp], [SLOT_BASE+eax+0xB8],\ |
164 | serge | 781 | edi, esi |
782 | |||
783 | mov edi, [dst_offset] |
||
784 | add edi, [ipc_tmp] |
||
785 | cmp dword [edi], 0 |
||
786 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
227 | serge | 787 | |
164 | serge | 788 | mov ebx, dword [edi+4] |
789 | mov edx, ebx |
||
790 | add ebx, 8 |
||
791 | add ebx, [msg_size] |
||
792 | cmp ebx, [buf_size] |
||
793 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
227 | serge | 794 | |
164 | serge | 795 | mov dword [edi+4], ebx |
796 | mov eax,[TASK_BASE] |
||
797 | mov eax, [eax+0x04] ;eax - our PID |
||
798 | mov edi, [dst_offset] |
||
799 | add edi, [ipc_tmp] |
||
800 | add edi, edx |
||
801 | mov [edi], eax |
||
802 | mov ecx, [msg_size] |
||
803 | |||
804 | mov [edi+4], ecx |
||
805 | add edi, 8 |
||
806 | mov esi, [msg_addr] |
||
419 | serge | 807 | ; add esi, new_app_base |
164 | serge | 808 | cld |
809 | rep movsb |
||
810 | |||
811 | mov ebx, [ipc_tmp] |
||
812 | mov edx, ebx |
||
813 | shr ebx, 12 |
||
814 | xor eax, eax |
||
365 | serge | 815 | mov [page_tabs+ebx*4], eax |
164 | serge | 816 | invlpg [edx] |
817 | |||
818 | mov ebx, [ipc_pdir] |
||
819 | mov edx, ebx |
||
820 | shr ebx, 12 |
||
821 | xor eax, eax |
||
365 | serge | 822 | mov [page_tabs+ebx*4], eax |
164 | serge | 823 | invlpg [edx] |
824 | |||
825 | mov ebx, [ipc_ptab] |
||
826 | mov edx, ebx |
||
827 | shr ebx, 12 |
||
828 | xor eax, eax |
||
365 | serge | 829 | mov [page_tabs+ebx*4], eax |
164 | serge | 830 | invlpg [edx] |
831 | |||
832 | mov eax, [dst_slot] |
||
833 | shl eax, 8 |
||
380 | serge | 834 | or [eax+SLOT_BASE+0xA8],dword 0x40 |
164 | serge | 835 | cmp dword [check_idle_semaphore],20 |
836 | jge .ipc_no_cis |
||
837 | |||
838 | mov dword [check_idle_semaphore],5 |
||
839 | .ipc_no_cis: |
||
840 | popf |
||
841 | xor eax, eax |
||
842 | ret |
||
843 | .no_pid: |
||
844 | popf |
||
845 | mov eax, 4 |
||
846 | ret |
||
847 | .no_ipc_area: |
||
848 | popf |
||
849 | xor eax, eax |
||
850 | inc eax |
||
851 | ret |
||
852 | .ipc_blocked: |
||
853 | popf |
||
854 | mov eax, 2 |
||
855 | ret |
||
856 | .buffer_overflow: |
||
857 | popf |
||
858 | mov eax, 3 |
||
859 | ret |
||
860 | endp |
||
861 | |||
862 | align 4 |
||
170 | serge | 863 | sysfn_meminfo: |
164 | serge | 864 | |
419 | serge | 865 | ; add ebx, new_app_base |
866 | cmp ebx, OS_BASE |
||
867 | jae .fail |
||
172 | serge | 868 | |
164 | serge | 869 | mov eax, [pg_data.pages_count] |
170 | serge | 870 | mov [ebx], eax |
172 | serge | 871 | shl eax, 12 |
872 | mov [esp+36], eax |
||
170 | serge | 873 | mov ecx, [pg_data.pages_free] |
874 | mov [ebx+4], ecx |
||
875 | mov edx, [pg_data.pages_faults] |
||
876 | mov [ebx+8], edx |
||
877 | mov esi, [heap_size] |
||
878 | mov [ebx+12], esi |
||
879 | mov edi, [heap_free] |
||
880 | mov [ebx+16], edi |
||
881 | mov eax, [heap_blocks] |
||
882 | mov [ebx+20], eax |
||
883 | mov ecx, [free_blocks] |
||
884 | mov [ebx+24], ecx |
||
164 | serge | 885 | ret |
172 | serge | 886 | .fail: |
887 | mov dword [esp+36], -1 |
||
888 | ret |
||
164 | serge | 889 | |
890 | align 4 |
||
891 | new_services: |
||
892 | |||
893 | cmp eax,4 |
||
894 | jle sys_sheduler |
||
895 | |||
170 | serge | 896 | cmp eax, 11 |
164 | serge | 897 | jb .fail |
898 | ja @f |
||
899 | |||
188 | serge | 900 | call init_heap |
164 | serge | 901 | mov [esp+36], eax |
902 | ret |
||
903 | @@: |
||
904 | cmp eax, 12 |
||
905 | ja @f |
||
906 | |||
907 | stdcall user_alloc, ebx |
||
908 | mov [esp+36], eax |
||
909 | ret |
||
910 | @@: |
||
911 | cmp eax, 13 |
||
912 | ja @f |
||
913 | stdcall user_free, ebx |
||
914 | mov [esp+36], eax |
||
915 | ret |
||
916 | @@: |
||
917 | cmp eax, 14 |
||
918 | ja @f |
||
419 | serge | 919 | cmp ebx, OS_BASE |
920 | jae .fail |
||
227 | serge | 921 | stdcall get_event_ex, ebx, ecx |
922 | mov [esp+36], eax |
||
164 | serge | 923 | ret |
924 | @@: |
||
925 | cmp eax, 15 |
||
926 | ja @f |
||
427 | serge | 927 | mov ecx, [current_slot] |
928 | mov eax, [ecx+APPDATA.fpu_handler] |
||
929 | mov [ecx+APPDATA.fpu_handler], ebx |
||
164 | serge | 930 | mov [esp+36], eax |
931 | ret |
||
932 | @@: |
||
933 | cmp eax, 16 |
||
934 | ja @f |
||
935 | |||
188 | serge | 936 | test ebx, ebx |
937 | jz .fail |
||
419 | serge | 938 | cmp ebx, OS_BASE |
939 | jae .fail |
||
164 | serge | 940 | stdcall get_service, ebx |
941 | mov [esp+36], eax |
||
942 | ret |
||
943 | @@: |
||
944 | cmp eax, 17 |
||
945 | ja @f |
||
378 | serge | 946 | call srv_handlerEx ;ebx |
164 | serge | 947 | mov [esp+36], eax |
948 | ret |
||
168 | serge | 949 | @@: |
950 | cmp eax, 18 |
||
951 | ja @f |
||
427 | serge | 952 | mov ecx, [current_slot] |
953 | mov eax, [ecx+APPDATA.sse_handler] |
||
954 | mov [ecx+APPDATA.sse_handler], ebx |
||
168 | serge | 955 | mov [esp+36], eax |
956 | ret |
||
164 | serge | 957 | @@: |
198 | serge | 958 | cmp eax, 19 |
227 | serge | 959 | ja .fail |
419 | serge | 960 | ; add ebx, new_app_base |
961 | cmp ebx, OS_BASE |
||
962 | jae .fail |
||
198 | serge | 963 | stdcall load_library, ebx |
964 | mov [esp+36], eax |
||
965 | ret |
||
227 | serge | 966 | |
164 | serge | 967 | .fail: |
968 | xor eax, eax |
||
969 | mov [esp+36], eax |
||
970 | ret |
||
971 | |||
972 | align 4 |
||
973 | proc init_mtrr |
||
974 | |||
388 | serge | 975 | cmp [BOOT_VAR+0x901c],byte 2 |
164 | serge | 976 | je .exit |
977 | |||
211 | serge | 978 | bt [cpu_caps], CAPS_MTRR |
979 | jnc .exit |
||
980 | |||
164 | serge | 981 | mov eax, cr0 |
982 | or eax, 0x60000000 ;disable caching |
||
983 | mov cr0, eax |
||
984 | wbinvd ;invalidate cache |
||
985 | |||
986 | mov ecx, 0x2FF |
||
987 | rdmsr ; |
||
988 | push eax |
||
989 | |||
990 | xor edx, edx |
||
991 | xor eax, eax |
||
992 | mov ecx, 0x2FF |
||
993 | wrmsr ;disable all MTRR |
||
994 | |||
995 | stdcall set_mtrr, dword 0,dword 0,[MEM_AMOUNT],MEM_WB |
||
996 | stdcall set_mtrr, dword 1,[LFBAddress],[LFBSize],MEM_WC |
||
997 | xor edx, edx |
||
998 | xor eax, eax |
||
999 | mov ecx, 0x204 |
||
1000 | mov ebx, 6 |
||
1001 | @@: |
||
1002 | wrmsr ;disable unused MTRR |
||
1003 | inc ecx |
||
1004 | wrmsr |
||
1005 | inc ecx |
||
1006 | dec ebx |
||
1007 | jnz @b |
||
1008 | |||
1009 | wbinvd ;again invalidate |
||
1010 | |||
1011 | pop eax |
||
1012 | or eax, 0x800 ;set default memtype to UC |
||
1013 | and al, 0xF0 |
||
1014 | mov ecx, 0x2FF |
||
1015 | wrmsr ;and enable MTRR |
||
1016 | |||
1017 | mov eax, cr0 |
||
1018 | and eax, not 0x60000000 |
||
1019 | mov cr0, eax ; enable caching |
||
1020 | .exit: |
||
1021 | ret |
||
1022 | endp |
||
1023 | |||
1024 | align 4 |
||
1025 | proc set_mtrr stdcall, reg:dword,base:dword,size:dword,mem_type:dword |
||
1026 | |||
1027 | xor edx, edx |
||
1028 | mov eax, [base] |
||
1029 | or eax, [mem_type] |
||
1030 | mov ecx, [reg] |
||
1031 | lea ecx, [0x200+ecx*2] |
||
1032 | wrmsr |
||
1033 | |||
1034 | mov ebx, [size] |
||
1035 | dec ebx |
||
1036 | mov eax, 0xFFFFFFFF |
||
1037 | mov edx, 0x0000000F |
||
1038 | sub eax, ebx |
||
1039 | sbb edx, 0 |
||
1040 | or eax, 0x800 |
||
1041 | inc ecx |
||
1042 | wrmsr |
||
1043 | ret |
||
1044 | endp |
||
1045 | |||
388 | serge | 1046 | |
172 | serge | 1047 | align 4 |
388 | serge | 1048 | proc strncmp stdcall, str1:dword, str2:dword, count:dword |
1049 | |||
1050 | mov ecx,[count] |
||
1051 | jecxz .end |
||
1052 | |||
1053 | mov ebx,ecx |
||
1054 | |||
1055 | mov edi,[str1] |
||
1056 | mov esi,edi |
||
1057 | xor eax,eax |
||
1058 | repne scasb |
||
1059 | neg ecx ; cx = count - strlen |
||
1060 | add ecx,ebx ; strlen + count - strlen |
||
1061 | |||
1062 | .okay: |
||
1063 | mov edi,esi |
||
1064 | mov esi,[str2] |
||
1065 | repe cmpsb |
||
1066 | mov al,[esi-1] |
||
1067 | xor ecx,ecx |
||
1068 | |||
1069 | cmp al,[edi-1] |
||
1070 | ja .str2_big |
||
1071 | je .end |
||
1072 | |||
1073 | .str1_big: |
||
1074 | sub ecx,2 |
||
1075 | |||
1076 | .str2_big: |
||
1077 | not ecx |
||
1078 | .end: |
||
1079 | mov eax,ecx |
||
1080 | ret |
||
1081 | endp |
||
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 | |||
164 | serge | 1110 | align 4 |
237 | serge | 1111 | k_strrchr: |
1112 | push eax |
||
1113 | xor eax,eax |
||
1114 | or ecx,-1 |
||
1115 | repne scasb |
||
1116 | add ecx,1 |
||
1117 | neg ecx |
||
1118 | sub edi,1 |
||
1119 | pop eax |
||
1120 | std |
||
1121 | repne scasb |
||
1122 | cld |
||
1123 | add edi,1 |
||
1124 | |||
1125 | cmp [edi],al |
||
1126 | jne @F |
||
1127 | mov eax,edi |
||
1128 | ret |
||
1129 | @@: |
||
1130 | xor eax,eax |
||
1131 | ret |
||
1132 | |||
1133 | align 4 |
||
1134 | proc k_strncpy stdcall, dest:dword, src:dword, maxlen:dword |
||
1135 | mov eax, [dest] |
||
1136 | mov esi, [src] |
||
1137 | mov ecx, [maxlen] |
||
1138 | test eax, eax |
||
1139 | jz .L9 |
||
1140 | test esi, esi |
||
1141 | jz .L9 |
||
1142 | test ecx, ecx |
||
1143 | jz .L9 |
||
1144 | |||
1145 | sub esi, eax |
||
1146 | jmp .L1 |
||
1147 | |||
1148 | align 4 |
||
1149 | .L2: |
||
1150 | mov edx, [esi+eax] |
||
1151 | mov [eax], dl |
||
1152 | test dl, dl |
||
1153 | jz .L7 |
||
1154 | |||
1155 | mov [eax+1], dh |
||
1156 | test dh, dh |
||
1157 | jz .L6 |
||
1158 | |||
1159 | shr edx, 16 |
||
1160 | mov [eax+2],dl |
||
1161 | test dl, dl |
||
1162 | jz .L5 |
||
1163 | |||
1164 | mov [eax+3], dh |
||
1165 | test dh, dh |
||
1166 | jz .L4 |
||
1167 | add eax, 4 |
||
1168 | .L1: |
||
1169 | sub ecx, 4 |
||
1170 | jae .L2 |
||
1171 | |||
1172 | add ecx, 4 |
||
1173 | jz .L9 |
||
1174 | |||
1175 | mov dl, [eax+esi] |
||
1176 | mov [eax], dl |
||
1177 | test dl, dl |
||
1178 | jz .L3 |
||
1179 | |||
1180 | inc eax |
||
1181 | dec ecx |
||
1182 | jz .L9 |
||
1183 | |||
1184 | mov dl, [eax+esi] |
||
1185 | mov [eax], dl |
||
1186 | test dl, dl |
||
1187 | jz .L3 |
||
1188 | |||
1189 | inc eax |
||
1190 | dec ecx |
||
1191 | jz .L9 |
||
1192 | |||
1193 | mov dl, [eax+esi] |
||
1194 | mov [eax], dl |
||
1195 | test dl, dl |
||
1196 | jz .L3 |
||
1197 | |||
1198 | inc eax |
||
1199 | jmp .L9 |
||
1200 | |||
1201 | .L4: dec ecx |
||
1202 | inc eax |
||
1203 | |||
1204 | .L5: dec ecx |
||
1205 | inc eax |
||
1206 | |||
1207 | .L6: dec ecx |
||
1208 | inc eax |
||
1209 | .L7: |
||
1210 | add ecx,3 |
||
1211 | jz .L9 |
||
1212 | .L8: |
||
1213 | mov byte [ecx+eax], 0 |
||
1214 | .L3: |
||
1215 | dec ecx |
||
1216 | jnz .L8 |
||
1217 | .L9: |
||
1218 | ret |
||
1219 | endp |
||
1220 | |||
1221 | if 0 |
||
1222 | |||
1223 | magic equ 0xfefefeff |
||
1224 | |||
1225 | k_strlen: |
||
1226 | mov eax,[esp+4] |
||
1227 | mov edx, 3 |
||
1228 | |||
1229 | and edx, eax |
||
1230 | jz .L1 |
||
1231 | jp .L0 |
||
1232 | |||
1233 | cmp dh, byte [eax] |
||
1234 | je .L2 |
||
1235 | |||
1236 | inc eax |
||
1237 | cmp dh, byte [eax] |
||
1238 | |||
1239 | je .L2 |
||
1240 | |||
1241 | inc eax |
||
1242 | xor edx, 2 |
||
1243 | |||
1244 | jz .L1 |
||
1245 | .L0: |
||
1246 | cmp dh, [eax] |
||
1247 | je .L2 |
||
1248 | |||
1249 | inc eax |
||
1250 | xor edx, edx |
||
1251 | |||
1252 | .L1: |
||
1253 | mov ecx, [eax] |
||
1254 | add eax, 4 |
||
1255 | |||
1256 | sub edx, ecx |
||
1257 | add ecx, magic |
||
1258 | |||
1259 | dec edx |
||
1260 | jnc .L3 |
||
1261 | |||
1262 | xor edx, ecx |
||
1263 | and edx, not magic |
||
1264 | jne .L3 |
||
1265 | |||
1266 | mov ecx, [eax] |
||
1267 | add eax, 4 |
||
1268 | |||
1269 | sub edx, ecx |
||
1270 | add ecx, magic |
||
1271 | dec edx |
||
1272 | jnc .L3 |
||
1273 | |||
1274 | xor edx, ecx |
||
1275 | and edx, not magic |
||
1276 | jne .L3 |
||
1277 | |||
1278 | mov ecx, [eax] |
||
1279 | add eax, 4 |
||
1280 | |||
1281 | sub edx, ecx |
||
1282 | add ecx, magic |
||
1283 | |||
1284 | dec edx |
||
1285 | jnc .L3 |
||
1286 | |||
1287 | xor edx, ecx |
||
1288 | |||
1289 | and edx, not magic |
||
1290 | jne .L3 |
||
1291 | |||
1292 | mov ecx, [eax] |
||
1293 | add eax, 4 |
||
1294 | |||
1295 | sub edx, ecx |
||
1296 | add ecx, magic |
||
1297 | |||
1298 | dec edx |
||
1299 | jnc .L3 |
||
1300 | |||
1301 | xor edx, ecx |
||
1302 | |||
1303 | and edx, not magic |
||
1304 | je .L1 |
||
1305 | |||
1306 | .L3: sub eax ,4 |
||
1307 | sub ecx, magic |
||
1308 | |||
1309 | cmp cl, 0 |
||
1310 | jz .L2 |
||
1311 | |||
1312 | inc eax |
||
1313 | test ch, ch |
||
1314 | jz .L2 |
||
1315 | |||
1316 | shr ecx, 16 |
||
1317 | inc eax |
||
1318 | |||
1319 | cmp cl,0 |
||
1320 | jz .L2 |
||
1321 | |||
1322 | inc eax |
||
1323 | |||
1324 | .L2: |
||
1325 | sub eax, [esp+4] |
||
1326 | ret |
||
1327 | |||
1328 | end if |
||
388 | serge | 1329 | |
1330 | if 0 |
||
1331 | push eax |
||
1332 | push edx |
||
420 | serge | 1333 | mov edx, 0x400 ;bochs |
1334 | mov al,0xff ;bochs |
||
1335 | out dx, al ;bochs |
||
388 | serge | 1336 | pop edx |
1337 | pop eax |
||
1338 | end if0>> |
||
1339 |