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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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1289 | diamond | 3 | ;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;; |
431 | serge | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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164 | serge | 7 | |
593 | mikedld | 8 | $Revision: 1496 $ |
9 | |||
10 | |||
164 | serge | 11 | align 4 |
12 | proc alloc_page |
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13 | |||
14 | pushfd |
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15 | cli |
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660 | serge | 16 | push ebx |
1461 | diamond | 17 | ;//- |
18 | cmp [pg_data.pages_free], 1 |
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19 | jle .out_of_memory |
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20 | ;//- |
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21 | |||
164 | serge | 22 | mov ebx, [page_start] |
23 | mov ecx, [page_end] |
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24 | .l1: |
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25 | bsf eax,[ebx]; |
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26 | jnz .found |
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27 | add ebx,4 |
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28 | cmp ebx, ecx |
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29 | jb .l1 |
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660 | serge | 30 | pop ebx |
164 | serge | 31 | popfd |
32 | xor eax,eax |
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33 | ret |
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34 | .found: |
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1461 | diamond | 35 | ;//- |
36 | dec [pg_data.pages_free] |
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37 | jz .out_of_memory |
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38 | ;//- |
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164 | serge | 39 | btr [ebx], eax |
40 | mov [page_start],ebx |
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41 | sub ebx, sys_pgmap |
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254 | serge | 42 | lea eax, [eax+ebx*8] |
164 | serge | 43 | shl eax, 12 |
1461 | diamond | 44 | ;//- dec [pg_data.pages_free] |
660 | serge | 45 | pop ebx |
164 | serge | 46 | popfd |
47 | ret |
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1461 | diamond | 48 | ;//- |
49 | .out_of_memory: |
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50 | mov [pg_data.pages_free], 1 |
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51 | xor eax, eax |
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52 | pop ebx |
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53 | popfd |
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54 | ret |
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55 | ;//- |
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164 | serge | 56 | endp |
57 | |||
58 | align 4 |
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59 | proc alloc_pages stdcall, count:dword |
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60 | pushfd |
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660 | serge | 61 | push ebx |
62 | push edi |
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164 | serge | 63 | cli |
64 | mov eax, [count] |
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65 | add eax, 7 |
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66 | shr eax, 3 |
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67 | mov [count], eax |
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1461 | diamond | 68 | ;//- |
69 | mov ebx, [pg_data.pages_free] |
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70 | sub ebx, 9 |
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71 | js .out_of_memory |
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72 | shr ebx, 3 |
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73 | cmp eax, ebx |
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74 | jg .out_of_memory |
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75 | ;//- |
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164 | serge | 76 | mov ecx, [page_start] |
77 | mov ebx, [page_end] |
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78 | .find: |
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79 | mov edx, [count] |
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80 | mov edi, ecx |
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81 | .match: |
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82 | cmp byte [ecx], 0xFF |
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83 | jne .next |
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84 | dec edx |
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85 | jz .ok |
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86 | inc ecx |
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87 | cmp ecx,ebx |
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88 | jb .match |
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1461 | diamond | 89 | .out_of_memory: |
660 | serge | 90 | .fail: |
91 | xor eax, eax |
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92 | pop edi |
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93 | pop ebx |
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164 | serge | 94 | popfd |
95 | ret |
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96 | .next: |
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97 | inc ecx |
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98 | cmp ecx, ebx |
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99 | jb .find |
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660 | serge | 100 | pop edi |
101 | pop ebx |
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164 | serge | 102 | popfd |
103 | xor eax, eax |
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104 | ret |
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105 | .ok: |
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106 | sub ecx, edi |
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107 | inc ecx |
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663 | serge | 108 | push esi |
164 | serge | 109 | mov esi, edi |
110 | xor eax, eax |
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111 | rep stosb |
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112 | sub esi, sys_pgmap |
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113 | shl esi, 3+12 |
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114 | mov eax, esi |
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115 | mov ebx, [count] |
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116 | shl ebx, 3 |
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117 | sub [pg_data.pages_free], ebx |
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663 | serge | 118 | pop esi |
660 | serge | 119 | pop edi |
120 | pop ebx |
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164 | serge | 121 | popfd |
122 | ret |
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123 | endp |
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124 | |||
125 | align 4 |
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126 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
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321 | diamond | 127 | push ebx |
164 | serge | 128 | mov eax, [phis_addr] |
129 | and eax, not 0xFFF |
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130 | or eax, [flags] |
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131 | mov ebx, [lin_addr] |
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132 | shr ebx, 12 |
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365 | serge | 133 | mov [page_tabs+ebx*4], eax |
164 | serge | 134 | mov eax, [lin_addr] |
135 | invlpg [eax] |
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321 | diamond | 136 | pop ebx |
164 | serge | 137 | ret |
138 | endp |
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139 | |||
140 | align 4 |
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281 | serge | 141 | map_space: ;not implemented |
142 | |||
143 | |||
144 | ret |
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145 | |||
146 | |||
147 | align 4 |
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164 | serge | 148 | proc free_page |
149 | ;arg: eax page address |
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150 | pushfd |
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151 | cli |
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819 | serge | 152 | shr eax, 12 ;page index |
153 | bts dword [sys_pgmap], eax ;that's all! |
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291 | serge | 154 | cmc |
328 | serge | 155 | adc [pg_data.pages_free], 0 |
164 | serge | 156 | shr eax, 3 |
819 | serge | 157 | and eax, not 3 ;dword offset from page_map |
448 | diamond | 158 | add eax, sys_pgmap |
164 | serge | 159 | cmp [page_start], eax |
160 | ja @f |
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161 | popfd |
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162 | ret |
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163 | @@: |
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164 | mov [page_start], eax |
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165 | popfd |
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166 | ret |
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167 | endp |
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168 | |||
741 | serge | 169 | proc map_io_mem stdcall, base:dword, size:dword, flags:dword |
170 | |||
171 | push ebx |
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172 | push edi |
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173 | mov eax, [size] |
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174 | add eax, 4095 |
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175 | and eax, -4096 |
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176 | mov [size], eax |
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177 | stdcall alloc_kernel_space, eax |
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178 | test eax, eax |
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179 | jz .fail |
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180 | push eax |
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181 | |||
182 | mov edi, 0x1000 |
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183 | mov ebx, eax |
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184 | mov ecx,[size] |
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185 | mov edx, [base] |
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186 | shr eax, 12 |
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187 | shr ecx, 12 |
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188 | and edx, -4096 |
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189 | or edx, [flags] |
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190 | @@: |
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191 | mov [page_tabs+eax*4], edx |
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819 | serge | 192 | ; push eax |
1275 | serge | 193 | invlpg [ebx] |
819 | serge | 194 | ; pop eax |
741 | serge | 195 | inc eax |
196 | add ebx, edi |
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197 | add edx, edi |
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198 | loop @B |
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199 | |||
200 | pop eax |
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201 | mov edx, [base] |
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202 | and edx, 4095 |
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203 | add eax, edx |
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204 | .fail: |
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205 | pop edi |
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206 | pop ebx |
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207 | ret |
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208 | endp |
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209 | |||
279 | serge | 210 | ; param |
328 | serge | 211 | ; eax= page base + page flags |
819 | serge | 212 | ; ebx= linear address |
281 | serge | 213 | ; ecx= count |
214 | |||
215 | align 4 |
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328 | serge | 216 | commit_pages: |
741 | serge | 217 | push edi |
328 | serge | 218 | test ecx, ecx |
219 | jz .fail |
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281 | serge | 220 | |
328 | serge | 221 | mov edi, ebx |
222 | mov ebx, pg_data.pg_mutex |
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223 | call wait_mutex ;ebx |
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224 | |||
225 | mov edx, 0x1000 |
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226 | mov ebx, edi |
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227 | shr ebx, 12 |
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228 | @@: |
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365 | serge | 229 | mov [page_tabs+ebx*4], eax |
819 | serge | 230 | ; push eax |
1275 | serge | 231 | invlpg [edi] |
819 | serge | 232 | ; pop eax |
328 | serge | 233 | add edi, edx |
234 | add eax, edx |
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235 | inc ebx |
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236 | dec ecx |
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237 | jnz @B |
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238 | mov [pg_data.pg_mutex],ecx |
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239 | .fail: |
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741 | serge | 240 | pop edi |
281 | serge | 241 | ret |
242 | |||
328 | serge | 243 | |
281 | serge | 244 | ; param |
279 | serge | 245 | ; eax= base |
281 | serge | 246 | ; ecx= count |
279 | serge | 247 | |
164 | serge | 248 | align 4 |
279 | serge | 249 | release_pages: |
321 | diamond | 250 | |
251 | pushad |
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279 | serge | 252 | mov ebx, pg_data.pg_mutex |
253 | call wait_mutex ;ebx |
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254 | |||
255 | mov esi, eax |
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256 | mov edi, eax |
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257 | |||
258 | shr esi, 10 |
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365 | serge | 259 | add esi, page_tabs |
328 | serge | 260 | |
261 | mov ebp, [pg_data.pages_free] |
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279 | serge | 262 | mov ebx, [page_start] |
263 | mov edx, sys_pgmap |
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264 | @@: |
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265 | xor eax, eax |
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266 | xchg eax, [esi] |
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924 | serge | 267 | push eax |
279 | serge | 268 | invlpg [edi] |
924 | serge | 269 | pop eax |
279 | serge | 270 | |
271 | test eax, 1 |
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272 | jz .next |
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273 | |||
274 | shr eax, 12 |
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275 | bts [edx], eax |
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291 | serge | 276 | cmc |
328 | serge | 277 | adc ebp, 0 |
279 | serge | 278 | shr eax, 3 |
279 | and eax, -4 |
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280 | add eax, edx |
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281 | cmp eax, ebx |
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282 | jae .next |
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283 | |||
284 | mov ebx, eax |
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285 | .next: |
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286 | add edi, 0x1000 |
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287 | add esi, 4 |
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288 | dec ecx |
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289 | jnz @B |
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328 | serge | 290 | mov [pg_data.pages_free], ebp |
279 | serge | 291 | and [pg_data.pg_mutex],0 |
321 | diamond | 292 | popad |
279 | serge | 293 | ret |
294 | |||
819 | serge | 295 | ; param |
296 | ; eax= base |
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297 | ; ecx= count |
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298 | |||
279 | serge | 299 | align 4 |
819 | serge | 300 | unmap_pages: |
301 | |||
302 | push edi |
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303 | |||
304 | mov edi, eax |
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305 | mov edx, eax |
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306 | |||
307 | shr edi, 10 |
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308 | add edi, page_tabs |
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309 | |||
310 | xor eax, eax |
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311 | @@: |
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312 | stosd |
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313 | invlpg [edx] |
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314 | add edx, 0x1000 |
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315 | loop @b |
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316 | |||
317 | pop edi |
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318 | ret |
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319 | |||
320 | |||
321 | align 4 |
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188 | serge | 322 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
321 | diamond | 323 | push ebx |
164 | serge | 324 | mov ebx, [lin_addr] |
325 | shr ebx, 22 |
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326 | mov eax, [phis_addr] |
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327 | and eax, not 0xFFF |
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328 | or eax, PG_UW ;+PG_NOCACHE |
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378 | serge | 329 | mov dword [master_tab+ebx*4], eax |
164 | serge | 330 | mov eax, [lin_addr] |
331 | shr eax, 10 |
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365 | serge | 332 | add eax, page_tabs |
164 | serge | 333 | invlpg [eax] |
321 | diamond | 334 | pop ebx |
164 | serge | 335 | ret |
336 | endp |
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337 | |||
338 | align 4 |
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339 | proc init_LFB |
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378 | serge | 340 | locals |
341 | pg_count dd ? |
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342 | endl |
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343 | |||
164 | serge | 344 | cmp dword [LFBAddress], -1 |
345 | jne @f |
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412 | serge | 346 | mov [BOOT_VAR+0x901c],byte 2 |
1300 | serge | 347 | stdcall alloc_pages, (0x280000 / 4096) |
348 | |||
349 | push eax |
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350 | call alloc_page |
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351 | stdcall map_page_table, LFB_BASE, eax |
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352 | pop eax |
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353 | or eax, PG_UW |
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354 | mov ebx, LFB_BASE |
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355 | mov ecx, 0x280000 / 4096 |
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356 | call commit_pages |
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357 | mov [LFBAddress], dword LFB_BASE |
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164 | serge | 358 | ret |
359 | @@: |
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360 | test [SCR_MODE],word 0100000000000000b |
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211 | serge | 361 | jnz @f |
412 | serge | 362 | mov [BOOT_VAR+0x901c],byte 2 |
211 | serge | 363 | ret |
364 | @@: |
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490 | serge | 365 | call init_mtrr |
366 | |||
378 | serge | 367 | mov edx, LFB_BASE |
368 | mov esi, [LFBAddress] |
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1300 | serge | 369 | mov edi, 0x00C00000 |
379 | serge | 370 | mov dword [exp_lfb+4], edx |
214 | serge | 371 | |
164 | serge | 372 | shr edi, 12 |
373 | mov [pg_count], edi |
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374 | shr edi, 10 |
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375 | |||
376 | bt [cpu_caps], CAPS_PSE |
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377 | jnc .map_page_tables |
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378 | or esi, PG_LARGE+PG_UW |
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465 | serge | 379 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
164 | serge | 380 | @@: |
465 | serge | 381 | mov [edx], esi |
378 | serge | 382 | add edx, 4 |
164 | serge | 383 | add esi, 0x00400000 |
384 | dec edi |
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385 | jnz @B |
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386 | |||
207 | serge | 387 | bt [cpu_caps], CAPS_PGE |
388 | jnc @F |
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465 | serge | 389 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
207 | serge | 390 | @@: |
378 | serge | 391 | mov dword [LFBAddress], LFB_BASE |
164 | serge | 392 | mov eax, cr3 ;flush TLB |
393 | mov cr3, eax |
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394 | ret |
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395 | |||
396 | .map_page_tables: |
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397 | |||
465 | serge | 398 | @@: |
164 | serge | 399 | call alloc_page |
378 | serge | 400 | stdcall map_page_table, edx, eax |
389 | serge | 401 | add edx, 0x00400000 |
164 | serge | 402 | dec edi |
465 | serge | 403 | jnz @B |
164 | serge | 404 | |
405 | mov eax, [LFBAddress] |
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378 | serge | 406 | mov edi, page_tabs + (LFB_BASE shr 10) |
164 | serge | 407 | or eax, PG_UW |
408 | mov ecx, [pg_count] |
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378 | serge | 409 | cld |
389 | serge | 410 | @@: |
411 | stosd |
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412 | add eax, 0x1000 |
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413 | dec ecx |
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414 | jnz @B |
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164 | serge | 415 | |
378 | serge | 416 | mov dword [LFBAddress], LFB_BASE |
164 | serge | 417 | mov eax, cr3 ;flush TLB |
418 | mov cr3, eax |
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419 | |||
420 | ret |
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421 | endp |
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422 | |||
423 | align 4 |
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424 | proc new_mem_resize stdcall, new_size:dword |
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425 | |||
276 | serge | 426 | mov ebx, pg_data.pg_mutex |
427 | call wait_mutex ;ebx |
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164 | serge | 428 | |
429 | mov edi, [new_size] |
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430 | add edi,4095 |
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431 | and edi,not 4095 |
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432 | mov [new_size], edi |
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433 | |||
465 | serge | 434 | mov edx,[current_slot] |
435 | cmp [edx+APPDATA.heap_base],0 |
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172 | serge | 436 | jne .exit |
437 | |||
465 | serge | 438 | mov esi, [edx+APPDATA.mem_size] |
164 | serge | 439 | add esi, 4095 |
440 | and esi, not 4095 |
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441 | |||
442 | cmp edi, esi |
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443 | jae .expand |
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444 | |||
445 | shr edi, 12 |
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446 | shr esi, 12 |
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447 | @@: |
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378 | serge | 448 | mov eax, [app_page_tabs+edi*4] |
164 | serge | 449 | test eax, 1 |
450 | jz .next |
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378 | serge | 451 | mov dword [app_page_tabs+edi*4], 2 |
164 | serge | 452 | mov ebx, edi |
453 | shl ebx, 12 |
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924 | serge | 454 | push eax |
659 | serge | 455 | invlpg [ebx] |
924 | serge | 456 | pop eax |
164 | serge | 457 | call free_page |
458 | |||
459 | .next: add edi, 1 |
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460 | cmp edi, esi |
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461 | jb @B |
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462 | |||
463 | .update_size: |
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465 | serge | 464 | mov ebx, [new_size] |
465 | call update_mem_size |
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164 | serge | 466 | |
467 | xor eax, eax |
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468 | dec [pg_data.pg_mutex] |
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469 | ret |
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470 | .expand: |
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471 | |||
472 | push esi |
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473 | push edi |
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474 | |||
475 | add edi, 0x3FFFFF |
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476 | and edi, not(0x3FFFFF) |
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477 | add esi, 0x3FFFFF |
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478 | and esi, not(0x3FFFFF) |
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479 | |||
480 | cmp esi, edi |
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481 | jae .grow |
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482 | |||
483 | xchg esi, edi |
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484 | |||
485 | @@: |
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486 | call alloc_page |
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487 | test eax, eax |
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1103 | diamond | 488 | jz .exit_pop |
164 | serge | 489 | |
188 | serge | 490 | stdcall map_page_table, edi, eax |
164 | serge | 491 | |
492 | push edi |
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493 | shr edi, 10 |
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365 | serge | 494 | add edi, page_tabs |
164 | serge | 495 | mov ecx, 1024 |
496 | xor eax, eax |
||
497 | cld |
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498 | rep stosd |
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499 | pop edi |
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500 | |||
501 | add edi, 0x00400000 |
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502 | cmp edi, esi |
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503 | jb @B |
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504 | .grow: |
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1461 | diamond | 505 | ;//- |
506 | pop edi |
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507 | push edi |
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508 | mov esi, [pg_data.pages_free] |
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509 | sub esi, 1 |
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510 | shr edi, 12 |
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511 | cmp esi, edi |
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512 | jle .out_of_memory |
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513 | ;//- |
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164 | serge | 514 | pop edi |
515 | pop esi |
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516 | @@: |
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517 | call alloc_page |
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518 | test eax, eax |
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519 | jz .exit |
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520 | stdcall map_page,esi,eax,dword PG_UW |
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521 | |||
522 | push edi |
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523 | mov edi, esi |
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524 | xor eax, eax |
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525 | mov ecx, 1024 |
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526 | cld |
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527 | rep stosd |
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528 | pop edi |
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529 | |||
530 | add esi, 0x1000 |
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531 | cmp esi, edi |
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294 | diamond | 532 | jb @B |
164 | serge | 533 | |
534 | jmp .update_size |
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1461 | diamond | 535 | ;//- |
1103 | diamond | 536 | .exit_pop: |
1461 | diamond | 537 | .out_of_memory: |
538 | ;//- |
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1103 | diamond | 539 | pop edi |
540 | pop esi |
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164 | serge | 541 | .exit: |
542 | xor eax, eax |
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543 | inc eax |
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544 | dec [pg_data.pg_mutex] |
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545 | ret |
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546 | endp |
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547 | |||
294 | diamond | 548 | update_mem_size: |
465 | serge | 549 | ; in: edx = slot base |
294 | diamond | 550 | ; ebx = new memory size |
551 | ; destroys eax,ecx,edx |
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552 | |||
465 | serge | 553 | mov [APPDATA.mem_size+edx],ebx |
294 | diamond | 554 | ;search threads and update |
555 | ;application memory size infomation |
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465 | serge | 556 | mov ecx,[APPDATA.dir_table+edx] |
294 | diamond | 557 | mov eax,2 |
558 | |||
559 | .search_threads: |
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560 | ;eax = current slot |
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561 | ;ebx = new memory size |
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562 | ;ecx = page directory |
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563 | cmp eax,[TASK_COUNT] |
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564 | jg .search_threads_end |
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565 | mov edx,eax |
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566 | shl edx,5 |
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567 | cmp word [CURRENT_TASK+edx+TASKDATA.state],9 ;if slot empty? |
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568 | jz .search_threads_next |
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569 | shl edx,3 |
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380 | serge | 570 | cmp [SLOT_BASE+edx+APPDATA.dir_table],ecx ;if it is our thread? |
294 | diamond | 571 | jnz .search_threads_next |
380 | serge | 572 | mov [SLOT_BASE+edx+APPDATA.mem_size],ebx ;update memory size |
294 | diamond | 573 | .search_threads_next: |
574 | inc eax |
||
575 | jmp .search_threads |
||
576 | .search_threads_end: |
||
577 | ret |
||
578 | |||
285 | serge | 579 | ; param |
580 | ; eax= linear address |
||
581 | ; |
||
582 | ; retval |
||
583 | ; eax= phisical page address |
||
584 | |||
164 | serge | 585 | align 4 |
285 | serge | 586 | get_pg_addr: |
587 | shr eax, 12 |
||
365 | serge | 588 | mov eax, [page_tabs+eax*4] |
164 | serge | 589 | and eax, 0xFFFFF000 |
590 | ret |
||
591 | |||
465 | serge | 592 | |
188 | serge | 593 | align 4 |
1105 | Galkov | 594 | ; Now it is called from core/sys32::exc_c (see stack frame there) |
164 | serge | 595 | proc page_fault_handler |
465 | serge | 596 | |
1056 | Galkov | 597 | .err_addr equ ebp-4 |
709 | diamond | 598 | |
1105 | Galkov | 599 | push ebx ;save exception number (#PF) |
1056 | Galkov | 600 | mov ebp, esp |
601 | mov ebx, cr2 |
||
1105 | Galkov | 602 | push ebx ;that is locals: .err_addr = cr2 |
1056 | Galkov | 603 | inc [pg_data.pages_faults] |
465 | serge | 604 | |
1056 | Galkov | 605 | mov eax, [pf_err_code] |
164 | serge | 606 | |
1056 | Galkov | 607 | cmp ebx, OS_BASE ;ebx == .err_addr |
608 | jb .user_space ;ñòðàíèöà â ïàìÿòè ïðèëîæåíèÿ ; |
||
188 | serge | 609 | |
1056 | Galkov | 610 | cmp ebx, page_tabs |
611 | jb .kernel_space ;ñòðàíèöà â ïàìÿòè ÿäðà |
||
164 | serge | 612 | |
1056 | Galkov | 613 | cmp ebx, kernel_tabs |
614 | jb .alloc;.app_tabs ;òàáëèöû ñòðàíèö ïðèëîæåíèÿ ; |
||
615 | ;ïðîñòî ñîçäàäèì îäíó |
||
616 | if 0 ;ïîêà ýòî ïðîñòî ëèøíåå |
||
617 | cmp ebx, LFB_BASE |
||
618 | jb .core_tabs ;òàáëèöû ñòðàíèö ÿäðà |
||
619 | ;Îøèáêà |
||
620 | .lfb: |
||
621 | ;îáëàñòü LFB |
||
622 | ;Îøèáêà |
||
623 | jmp .fail |
||
624 | end if |
||
625 | .core_tabs: |
||
626 | .fail: ;simply return to caller |
||
627 | mov esp, ebp |
||
1105 | Galkov | 628 | pop ebx ;restore exception number (#PF) |
1056 | Galkov | 629 | ret |
378 | serge | 630 | |
1300 | serge | 631 | ; xchg bx, bx |
632 | ; add esp,12 ;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
||
633 | ; restore_ring3_context |
||
634 | ; iretd |
||
635 | |||
164 | serge | 636 | .user_space: |
1056 | Galkov | 637 | test eax, PG_MAP |
638 | jnz .err_access ;Ñòðàíèöà ïðèñóòñòâóåò |
||
639 | ;Îøèáêà äîñòóïà ? |
||
465 | serge | 640 | |
1056 | Galkov | 641 | shr ebx, 12 |
642 | mov ecx, ebx |
||
643 | shr ecx, 10 |
||
644 | mov edx, [master_tab+ecx*4] |
||
645 | test edx, PG_MAP |
||
646 | jz .fail ;òàáëèöà ñòðàíèö íå ñîçäàíà |
||
647 | ;íåâåðíûé àäðåñ â ïðîãðàììå |
||
172 | serge | 648 | |
1056 | Galkov | 649 | mov eax, [page_tabs+ebx*4] |
650 | test eax, 2 |
||
651 | jz .fail ;àäðåñ íå çàðåçåðâèðîâàí äëÿ ; |
||
652 | ;èñïîëüçîâàíèÿ. Îøèáêà |
||
188 | serge | 653 | .alloc: |
1056 | Galkov | 654 | call alloc_page |
655 | test eax, eax |
||
656 | jz .fail |
||
164 | serge | 657 | |
1289 | diamond | 658 | stdcall map_page,[.err_addr],eax,PG_UW |
164 | serge | 659 | |
1056 | Galkov | 660 | mov edi, [.err_addr] |
661 | and edi, 0xFFFFF000 |
||
662 | mov ecx, 1024 |
||
663 | xor eax, eax |
||
664 | ;cld ;caller is duty for this |
||
665 | rep stosd |
||
666 | .exit: ;iret with repeat fault instruction |
||
1105 | Galkov | 667 | add esp,12 ;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
1056 | Galkov | 668 | restore_ring3_context |
669 | iretd |
||
465 | serge | 670 | |
1289 | diamond | 671 | .err_access: |
672 | ; access denied? this may be a result of copy-on-write protection for DLL |
||
673 | ; check list of HDLLs |
||
674 | and ebx, not 0xFFF |
||
675 | mov eax, [CURRENT_TASK] |
||
676 | shl eax, 8 |
||
1311 | diamond | 677 | mov eax, [SLOT_BASE+eax+APPDATA.dlls_list_ptr] |
678 | test eax, eax |
||
679 | jz .fail |
||
680 | mov esi, [eax+HDLL.fd] |
||
1289 | diamond | 681 | .scan_hdll: |
682 | cmp esi, eax |
||
683 | jz .fail |
||
684 | mov edx, ebx |
||
685 | sub edx, [esi+HDLL.base] |
||
686 | cmp edx, [esi+HDLL.size] |
||
687 | jb .fault_in_hdll |
||
688 | .scan_hdll.next: |
||
1311 | diamond | 689 | mov esi, [esi+HDLL.fd] |
1289 | diamond | 690 | jmp .scan_hdll |
691 | .fault_in_hdll: |
||
692 | ; allocate new page, map it as rw and copy data |
||
693 | call alloc_page |
||
694 | test eax, eax |
||
695 | jz .fail |
||
696 | stdcall map_page,ebx,eax,PG_UW |
||
697 | mov edi, ebx |
||
698 | mov ecx, 1024 |
||
699 | sub ebx, [esi+HDLL.base] |
||
700 | mov esi, [esi+HDLL.parent] |
||
701 | mov esi, [esi+DLLDESCR.data] |
||
702 | add esi, ebx |
||
703 | rep movsd |
||
704 | jmp .exit |
||
465 | serge | 705 | |
706 | .kernel_space: |
||
1056 | Galkov | 707 | test eax, PG_MAP |
708 | jz .fail ;ñòðàíèöà íå ïðèñóòñòâóåò |
||
465 | serge | 709 | |
1056 | Galkov | 710 | test eax,12 ;U/S (+below) |
711 | jnz .fail ;ïðèëîæåíèå îáðàòèëîñü ê ïàìÿòè |
||
712 | ;ÿäðà |
||
713 | ;test eax, 8 |
||
714 | ;jnz .fail ;óñòàíîâëåí çàðåçåðâèðîâàííûé áèò |
||
715 | ;â òàáëèöàõ ñòðàíèö. äîáàâëåíî â P4/Xeon |
||
465 | serge | 716 | |
717 | ;ïîïûòêà çàïèñè â çàùèù¸ííóþ ñòðàíèöó ÿäðà |
||
718 | |||
1056 | Galkov | 719 | cmp ebx, tss._io_map_0 |
720 | jb .fail |
||
465 | serge | 721 | |
1056 | Galkov | 722 | cmp ebx, tss._io_map_0+8192 |
723 | jae .fail |
||
465 | serge | 724 | |
725 | ; io permission map |
||
726 | ; copy-on-write protection |
||
727 | |||
1056 | Galkov | 728 | call alloc_page |
729 | test eax, eax |
||
730 | jz .fail |
||
465 | serge | 731 | |
1056 | Galkov | 732 | push eax |
733 | stdcall map_page,[.err_addr],eax,dword PG_SW |
||
734 | pop eax |
||
735 | mov edi, [.err_addr] |
||
736 | and edi, -4096 |
||
737 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
||
465 | serge | 738 | |
1056 | Galkov | 739 | mov ebx, esi |
740 | shr ebx, 12 |
||
741 | mov edx, [current_slot] |
||
742 | or eax, PG_SW |
||
743 | mov [edx+APPDATA.io_map+ebx*4], eax |
||
465 | serge | 744 | |
1056 | Galkov | 745 | add esi, [default_io_map] |
746 | mov ecx, 4096/4 |
||
747 | ;cld ;caller is duty for this |
||
748 | rep movsd |
||
749 | jmp .exit |
||
164 | serge | 750 | endp |
751 | |||
1314 | diamond | 752 | ; returns number of mapped bytes |
753 | proc map_mem stdcall, lin_addr:dword,slot:dword,\ |
||
754 | ofs:dword,buf_size:dword,req_access:dword |
||
755 | push 0 ; initialize number of mapped bytes |
||
756 | |||
757 | cmp [buf_size], 0 |
||
164 | serge | 758 | jz .exit |
759 | |||
1314 | diamond | 760 | mov eax, [slot] |
761 | shl eax, 8 |
||
762 | mov eax, [SLOT_BASE+eax+APPDATA.dir_table] |
||
164 | serge | 763 | and eax, 0xFFFFF000 |
764 | |||
536 | diamond | 765 | stdcall map_page,[ipc_pdir],eax,PG_UW |
164 | serge | 766 | mov ebx, [ofs] |
767 | shr ebx, 22 |
||
768 | mov esi, [ipc_pdir] |
||
769 | mov edi, [ipc_ptab] |
||
770 | mov eax, [esi+ebx*4] |
||
771 | and eax, 0xFFFFF000 |
||
772 | jz .exit |
||
536 | diamond | 773 | stdcall map_page,edi,eax,PG_UW |
164 | serge | 774 | ; inc ebx |
775 | ; add edi, 0x1000 |
||
776 | ; mov eax, [esi+ebx*4] |
||
777 | ; test eax, eax |
||
778 | ; jz @f |
||
779 | ; and eax, 0xFFFFF000 |
||
780 | ; stdcall map_page, edi, eax |
||
781 | |||
782 | @@: mov edi, [lin_addr] |
||
783 | and edi, 0xFFFFF000 |
||
784 | mov ecx, [buf_size] |
||
785 | add ecx, 4095 |
||
786 | shr ecx, 12 |
||
787 | inc ecx |
||
788 | |||
789 | mov edx, [ofs] |
||
790 | shr edx, 12 |
||
791 | and edx, 0x3FF |
||
792 | mov esi, [ipc_ptab] |
||
793 | |||
1314 | diamond | 794 | .map: |
795 | stdcall safe_map_page,[slot],[req_access],[ofs] |
||
796 | jnc .exit |
||
797 | add dword [ebp-4], 4096 |
||
798 | add [ofs], 4096 |
||
536 | diamond | 799 | dec ecx |
800 | jz .exit |
||
164 | serge | 801 | add edi, 0x1000 |
802 | inc edx |
||
536 | diamond | 803 | cmp edx, 0x400 |
164 | serge | 804 | jnz .map |
536 | diamond | 805 | inc ebx |
806 | mov eax, [ipc_pdir] |
||
807 | mov eax, [eax+ebx*4] |
||
808 | and eax, 0xFFFFF000 |
||
809 | jz .exit |
||
810 | stdcall map_page,esi,eax,PG_UW |
||
811 | xor edx, edx |
||
812 | jmp .map |
||
164 | serge | 813 | |
814 | .exit: |
||
1314 | diamond | 815 | pop eax |
164 | serge | 816 | ret |
817 | endp |
||
818 | |||
1314 | diamond | 819 | proc map_memEx stdcall, lin_addr:dword,slot:dword,\ |
820 | ofs:dword,buf_size:dword,req_access:dword |
||
821 | push 0 ; initialize number of mapped bytes |
||
822 | |||
823 | cmp [buf_size], 0 |
||
164 | serge | 824 | jz .exit |
825 | |||
1314 | diamond | 826 | mov eax, [slot] |
827 | shl eax, 8 |
||
828 | mov eax, [SLOT_BASE+eax+APPDATA.dir_table] |
||
164 | serge | 829 | and eax, 0xFFFFF000 |
830 | |||
1314 | diamond | 831 | stdcall map_page,[proc_mem_pdir],eax,PG_UW |
164 | serge | 832 | mov ebx, [ofs] |
833 | shr ebx, 22 |
||
834 | mov esi, [proc_mem_pdir] |
||
835 | mov edi, [proc_mem_tab] |
||
836 | mov eax, [esi+ebx*4] |
||
837 | and eax, 0xFFFFF000 |
||
838 | test eax, eax |
||
839 | jz .exit |
||
1314 | diamond | 840 | stdcall map_page,edi,eax,PG_UW |
164 | serge | 841 | |
842 | @@: mov edi, [lin_addr] |
||
843 | and edi, 0xFFFFF000 |
||
844 | mov ecx, [buf_size] |
||
845 | add ecx, 4095 |
||
846 | shr ecx, 12 |
||
847 | inc ecx |
||
848 | |||
849 | mov edx, [ofs] |
||
850 | shr edx, 12 |
||
851 | and edx, 0x3FF |
||
852 | mov esi, [proc_mem_tab] |
||
853 | |||
1314 | diamond | 854 | .map: |
855 | stdcall safe_map_page,[slot],[req_access],[ofs] |
||
856 | jnc .exit |
||
857 | add dword [ebp-4], 0x1000 |
||
164 | serge | 858 | add edi, 0x1000 |
1314 | diamond | 859 | add [ofs], 0x1000 |
164 | serge | 860 | inc edx |
861 | dec ecx |
||
862 | jnz .map |
||
863 | .exit: |
||
1314 | diamond | 864 | pop eax |
164 | serge | 865 | ret |
866 | endp |
||
867 | |||
1314 | diamond | 868 | ; in: esi+edx*4 = pointer to page table entry |
869 | ; in: [slot], [req_access], [ofs] on the stack |
||
870 | ; in: edi = linear address to map |
||
871 | ; out: CF cleared <=> failed |
||
872 | ; destroys: only eax |
||
873 | proc safe_map_page stdcall, slot:dword, req_access:dword, ofs:dword |
||
874 | mov eax, [esi+edx*4] |
||
875 | test al, PG_MAP |
||
876 | jz .not_present |
||
877 | test al, PG_WRITE |
||
878 | jz .resolve_readonly |
||
879 | ; normal case: writable page, just map with requested access |
||
880 | .map: |
||
881 | stdcall map_page, edi, eax, [req_access] |
||
882 | stc |
||
883 | .fail: |
||
884 | ret |
||
885 | .not_present: |
||
886 | ; check for alloc-on-demand page |
||
887 | test al, 2 |
||
888 | jz .fail |
||
889 | ; allocate new page, save it to source page table |
||
890 | push ecx |
||
891 | call alloc_page |
||
892 | pop ecx |
||
893 | test eax, eax |
||
894 | jz .fail |
||
895 | or al, PG_UW |
||
896 | mov [esi+edx*4], eax |
||
897 | jmp .map |
||
898 | .resolve_readonly: |
||
899 | ; readonly page, probably copy-on-write |
||
900 | ; check: readonly request of readonly page is ok |
||
901 | test [req_access], PG_WRITE |
||
902 | jz .map |
||
903 | ; find control structure for this page |
||
904 | pushf |
||
905 | cli |
||
906 | cld |
||
907 | push ebx ecx |
||
908 | mov eax, [slot] |
||
909 | shl eax, 8 |
||
910 | mov eax, [SLOT_BASE+eax+APPDATA.dlls_list_ptr] |
||
911 | test eax, eax |
||
912 | jz .no_hdll |
||
913 | mov ecx, [eax+HDLL.fd] |
||
914 | .scan_hdll: |
||
915 | cmp ecx, eax |
||
916 | jz .no_hdll |
||
917 | mov ebx, [ofs] |
||
918 | and ebx, not 0xFFF |
||
919 | sub ebx, [ecx+HDLL.base] |
||
920 | cmp ebx, [ecx+HDLL.size] |
||
921 | jb .hdll_found |
||
922 | mov ecx, [ecx+HDLL.fd] |
||
923 | jmp .scan_hdll |
||
924 | .no_hdll: |
||
925 | pop ecx ebx |
||
926 | popf |
||
927 | clc |
||
928 | ret |
||
929 | .hdll_found: |
||
930 | ; allocate page, save it in page table, map it, copy contents from base |
||
931 | mov eax, [ecx+HDLL.parent] |
||
932 | add ebx, [eax+DLLDESCR.data] |
||
933 | call alloc_page |
||
934 | test eax, eax |
||
935 | jz .no_hdll |
||
936 | or al, PG_UW |
||
937 | mov [esi+edx*4], eax |
||
938 | stdcall map_page, edi, eax, [req_access] |
||
939 | push esi edi |
||
940 | mov esi, ebx |
||
941 | mov ecx, 4096/4 |
||
942 | rep movsd |
||
943 | pop edi esi |
||
944 | pop ecx ebx |
||
945 | popf |
||
946 | stc |
||
947 | ret |
||
948 | endp |
||
164 | serge | 949 | |
950 | sys_IPC: |
||
951 | ;input: |
||
1496 | Lrz | 952 | ; ebx=1 - set ipc buffer area |
953 | ; ecx=address of buffer |
||
954 | ; edx=size of buffer |
||
164 | serge | 955 | ; eax=2 - send message |
956 | ; ebx=PID |
||
957 | ; ecx=address of message |
||
958 | ; edx=size of message |
||
959 | |||
1496 | Lrz | 960 | dec ebx |
961 | jnz @f |
||
164 | serge | 962 | |
1496 | Lrz | 963 | mov eax,[current_slot] |
964 | pushf |
||
965 | cli |
||
966 | mov [eax+APPDATA.ipc_start],ecx ;set fields in extended information area |
||
967 | mov [eax+APPDATA.ipc_size],edx |
||
164 | serge | 968 | |
1496 | Lrz | 969 | add edx, ecx |
970 | add edx, 4095 |
||
971 | and edx, not 4095 |
||
164 | serge | 972 | |
1496 | Lrz | 973 | .touch: mov eax, [ecx] |
974 | add ecx, 0x1000 |
||
975 | cmp ecx, edx |
||
976 | jb .touch |
||
164 | serge | 977 | |
1496 | Lrz | 978 | popf |
979 | mov [esp+32], ebx ;ebx=0 |
||
980 | ret |
||
164 | serge | 981 | |
1496 | Lrz | 982 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
983 | ;2 |
||
984 | @@: |
||
985 | dec ebx |
||
986 | jnz @f |
||
164 | serge | 987 | |
1496 | Lrz | 988 | stdcall sys_ipc_send, ecx, edx, esi |
989 | mov [esp+32], eax |
||
990 | ret |
||
991 | @@: |
||
992 | or eax,-1 |
||
993 | mov [esp+32], eax |
||
994 | ret |
||
995 | |||
996 | ;align 4 |
||
997 | ;proc set_ipc_buff |
||
998 | |||
999 | ; mov eax,[current_slot] |
||
1000 | ; pushf |
||
1001 | ; cli |
||
1002 | ; mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
||
1003 | ; mov [eax+APPDATA.ipc_size],ecx |
||
1004 | ; |
||
1005 | ; add ecx, ebx |
||
1006 | ; add ecx, 4095 |
||
1007 | ; and ecx, not 4095 |
||
1008 | ; |
||
1009 | ;.touch: mov eax, [ebx] |
||
1010 | ; add ebx, 0x1000 |
||
1011 | ; cmp ebx, ecx |
||
1012 | ; jb .touch |
||
1013 | ; |
||
1014 | ; popf |
||
1015 | ; xor eax, eax |
||
1016 | ; ret |
||
1017 | ;endp |
||
1018 | |||
164 | serge | 1019 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
1020 | locals |
||
1021 | dst_slot dd ? |
||
1022 | dst_offset dd ? |
||
1023 | buf_size dd ? |
||
536 | diamond | 1024 | used_buf dd ? |
164 | serge | 1025 | endl |
1026 | |||
1027 | pushf |
||
1028 | cli |
||
1029 | |||
1030 | mov eax, [PID] |
||
1031 | call pid_to_slot |
||
1032 | test eax,eax |
||
1033 | jz .no_pid |
||
1034 | |||
1035 | mov [dst_slot], eax |
||
1036 | shl eax,8 |
||
380 | serge | 1037 | mov edi,[eax+SLOT_BASE+0xa0] ;is ipc area defined? |
164 | serge | 1038 | test edi,edi |
1039 | jz .no_ipc_area |
||
1040 | |||
1041 | mov ebx, edi |
||
1042 | and ebx, 0xFFF |
||
1043 | mov [dst_offset], ebx |
||
1044 | |||
380 | serge | 1045 | mov esi, [eax+SLOT_BASE+0xa4] |
164 | serge | 1046 | mov [buf_size], esi |
1047 | |||
536 | diamond | 1048 | mov ecx, [ipc_tmp] |
1049 | cmp esi, 0x40000-0x1000 ; size of [ipc_tmp] minus one page |
||
1050 | jbe @f |
||
1314 | diamond | 1051 | push esi edi |
536 | diamond | 1052 | add esi,0x1000 |
1053 | stdcall alloc_kernel_space,esi |
||
1054 | mov ecx, eax |
||
1314 | diamond | 1055 | pop edi esi |
536 | diamond | 1056 | @@: |
1057 | mov [used_buf], ecx |
||
1314 | diamond | 1058 | stdcall map_mem, ecx, [dst_slot],\ |
1059 | edi, esi, PG_SW |
||
164 | serge | 1060 | |
1061 | mov edi, [dst_offset] |
||
536 | diamond | 1062 | add edi, [used_buf] |
164 | serge | 1063 | cmp dword [edi], 0 |
1064 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
227 | serge | 1065 | |
566 | serge | 1066 | mov edx, dword [edi+4] |
1067 | lea ebx, [edx+8] |
||
164 | serge | 1068 | add ebx, [msg_size] |
1069 | cmp ebx, [buf_size] |
||
1070 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
||
227 | serge | 1071 | |
164 | serge | 1072 | mov dword [edi+4], ebx |
1073 | mov eax,[TASK_BASE] |
||
1074 | mov eax, [eax+0x04] ;eax - our PID |
||
1075 | add edi, edx |
||
1076 | mov [edi], eax |
||
1077 | mov ecx, [msg_size] |
||
1078 | |||
1079 | mov [edi+4], ecx |
||
1080 | add edi, 8 |
||
1081 | mov esi, [msg_addr] |
||
465 | serge | 1082 | ; add esi, new_app_base |
164 | serge | 1083 | cld |
1084 | rep movsb |
||
1085 | |||
1086 | mov ebx, [ipc_tmp] |
||
1087 | mov edx, ebx |
||
1088 | shr ebx, 12 |
||
1089 | xor eax, eax |
||
365 | serge | 1090 | mov [page_tabs+ebx*4], eax |
164 | serge | 1091 | invlpg [edx] |
1092 | |||
1093 | mov ebx, [ipc_pdir] |
||
1094 | mov edx, ebx |
||
1095 | shr ebx, 12 |
||
1096 | xor eax, eax |
||
365 | serge | 1097 | mov [page_tabs+ebx*4], eax |
164 | serge | 1098 | invlpg [edx] |
1099 | |||
1100 | mov ebx, [ipc_ptab] |
||
1101 | mov edx, ebx |
||
1102 | shr ebx, 12 |
||
1103 | xor eax, eax |
||
365 | serge | 1104 | mov [page_tabs+ebx*4], eax |
164 | serge | 1105 | invlpg [edx] |
1106 | |||
1107 | mov eax, [dst_slot] |
||
1108 | shl eax, 8 |
||
380 | serge | 1109 | or [eax+SLOT_BASE+0xA8],dword 0x40 |
164 | serge | 1110 | cmp dword [check_idle_semaphore],20 |
1111 | jge .ipc_no_cis |
||
1112 | |||
1113 | mov dword [check_idle_semaphore],5 |
||
1114 | .ipc_no_cis: |
||
536 | diamond | 1115 | push 0 |
1116 | jmp .ret |
||
164 | serge | 1117 | .no_pid: |
1118 | popf |
||
536 | diamond | 1119 | mov eax, 4 |
164 | serge | 1120 | ret |
1121 | .no_ipc_area: |
||
1122 | popf |
||
1123 | xor eax, eax |
||
1124 | inc eax |
||
1125 | ret |
||
1126 | .ipc_blocked: |
||
536 | diamond | 1127 | push 2 |
1128 | jmp .ret |
||
164 | serge | 1129 | .buffer_overflow: |
536 | diamond | 1130 | push 3 |
1131 | .ret: |
||
1132 | mov eax, [used_buf] |
||
1133 | cmp eax, [ipc_tmp] |
||
1134 | jz @f |
||
1135 | stdcall free_kernel_space,eax |
||
1136 | @@: |
||
1137 | pop eax |
||
164 | serge | 1138 | popf |
1139 | ret |
||
1140 | endp |
||
1141 | |||
1142 | align 4 |
||
170 | serge | 1143 | sysfn_meminfo: |
164 | serge | 1144 | |
1072 | diamond | 1145 | ; add ecx, new_app_base |
1146 | cmp ecx, OS_BASE |
||
465 | serge | 1147 | jae .fail |
172 | serge | 1148 | |
164 | serge | 1149 | mov eax, [pg_data.pages_count] |
1072 | diamond | 1150 | mov [ecx], eax |
172 | serge | 1151 | shl eax, 12 |
1072 | diamond | 1152 | mov [esp+32], eax |
1153 | mov eax, [pg_data.pages_free] |
||
1154 | mov [ecx+4], eax |
||
1155 | mov eax, [pg_data.pages_faults] |
||
1156 | mov [ecx+8], eax |
||
1157 | mov eax, [heap_size] |
||
1158 | mov [ecx+12], eax |
||
1159 | mov eax, [heap_free] |
||
1160 | mov [ecx+16], eax |
||
170 | serge | 1161 | mov eax, [heap_blocks] |
1072 | diamond | 1162 | mov [ecx+20], eax |
1163 | mov eax, [free_blocks] |
||
1164 | mov [ecx+24], eax |
||
164 | serge | 1165 | ret |
172 | serge | 1166 | .fail: |
1276 | Lrz | 1167 | or dword [esp+32], -1 |
172 | serge | 1168 | ret |
1276 | Lrz | 1169 | iglobal |
164 | serge | 1170 | align 4 |
940 | serge | 1171 | f68call: |
1275 | serge | 1172 | dd f68.11 ; init_heap |
1173 | dd f68.12 ; user_alloc |
||
1174 | dd f68.13 ; user_free |
||
1175 | dd f68.14 ; get_event_ex |
||
1077 | Galkov | 1176 | dd f68.fail ;moved to f68.24 |
1275 | serge | 1177 | dd f68.16 ; get_service |
1178 | dd f68.17 ; call_service |
||
1077 | Galkov | 1179 | dd f68.fail ;moved to f68.25 |
1275 | serge | 1180 | dd f68.19 ; load_dll |
1181 | dd f68.20 ; user_realloc |
||
1182 | dd f68.21 ; load_driver |
||
1183 | dd f68.22 ; shmem_open |
||
1184 | dd f68.23 ; shmem_close |
||
1077 | Galkov | 1185 | dd f68.24 |
1186 | dd f68.25 |
||
1276 | Lrz | 1187 | endg |
940 | serge | 1188 | align 4 |
1189 | f68: |
||
1345 | Lrz | 1190 | cmp ebx,4 |
1366 | Lrz | 1191 | jbe sys_sheduler |
164 | serge | 1192 | |
1345 | Lrz | 1193 | cmp ebx, 11 |
164 | serge | 1194 | jb .fail |
1195 | |||
1345 | Lrz | 1196 | cmp ebx, 25 |
940 | serge | 1197 | ja .fail |
1198 | |||
1345 | Lrz | 1199 | jmp dword [f68call+ebx*4-11*4] |
940 | serge | 1200 | .11: |
188 | serge | 1201 | call init_heap |
1345 | Lrz | 1202 | mov [esp+32], eax |
164 | serge | 1203 | ret |
940 | serge | 1204 | .12: |
1345 | Lrz | 1205 | stdcall user_alloc, ecx |
1206 | mov [esp+32], eax |
||
164 | serge | 1207 | ret |
940 | serge | 1208 | .13: |
1345 | Lrz | 1209 | stdcall user_free, ecx |
1210 | mov [esp+32], eax |
||
164 | serge | 1211 | ret |
940 | serge | 1212 | .14: |
1345 | Lrz | 1213 | cmp ecx, OS_BASE |
465 | serge | 1214 | jae .fail |
1345 | Lrz | 1215 | mov edi,ecx |
1055 | Galkov | 1216 | call get_event_ex |
1345 | Lrz | 1217 | mov [esp+32], eax |
164 | serge | 1218 | ret |
940 | serge | 1219 | .16: |
1345 | Lrz | 1220 | test ecx, ecx |
188 | serge | 1221 | jz .fail |
1345 | Lrz | 1222 | cmp ecx, OS_BASE |
465 | serge | 1223 | jae .fail |
1345 | Lrz | 1224 | stdcall get_service, ecx |
1225 | mov [esp+32], eax |
||
164 | serge | 1226 | ret |
940 | serge | 1227 | .17: |
1345 | Lrz | 1228 | call srv_handlerEx ;ecx |
1229 | mov [esp+32], eax |
||
164 | serge | 1230 | ret |
940 | serge | 1231 | .19: |
1345 | Lrz | 1232 | cmp ecx, OS_BASE |
465 | serge | 1233 | jae .fail |
1345 | Lrz | 1234 | stdcall load_library, ecx |
1235 | mov [esp+32], eax |
||
198 | serge | 1236 | ret |
940 | serge | 1237 | .20: |
1345 | Lrz | 1238 | mov eax, edx |
1239 | mov ebx, ecx |
||
1240 | call user_realloc ;in: eax = pointer, ebx = new size |
||
1241 | mov [esp+32], eax |
||
490 | serge | 1242 | ret |
940 | serge | 1243 | .21: |
1345 | Lrz | 1244 | cmp ecx, OS_BASE |
740 | serge | 1245 | jae .fail |
1246 | |||
1345 | Lrz | 1247 | cmp ebx, OS_BASE |
1316 | serge | 1248 | jae .fail |
1249 | |||
1345 | Lrz | 1250 | mov edi, edx |
1251 | stdcall load_PE, ecx |
||
1316 | serge | 1252 | mov esi, eax |
740 | serge | 1253 | test eax, eax |
1254 | jz @F |
||
1255 | |||
1316 | serge | 1256 | push edi |
1257 | push DRV_ENTRY |
||
1258 | call eax |
||
1259 | add esp, 8 |
||
740 | serge | 1260 | test eax, eax |
1261 | jz @F |
||
1262 | |||
1263 | mov [eax+SRV.entry], esi |
||
1264 | |||
1265 | @@: |
||
1345 | Lrz | 1266 | mov [esp+32], eax |
740 | serge | 1267 | ret |
940 | serge | 1268 | .22: |
1345 | Lrz | 1269 | cmp ecx, OS_BASE |
940 | serge | 1270 | jae .fail |
740 | serge | 1271 | |
1345 | Lrz | 1272 | stdcall shmem_open, ecx, edx, esi |
1273 | mov [esp+24], edx |
||
1274 | mov [esp+32], eax |
||
940 | serge | 1275 | ret |
740 | serge | 1276 | |
943 | serge | 1277 | .23: |
1345 | Lrz | 1278 | cmp ecx, OS_BASE |
943 | serge | 1279 | jae .fail |
1280 | |||
1345 | Lrz | 1281 | stdcall shmem_close, ecx |
1282 | mov [esp+32], eax |
||
943 | serge | 1283 | ret |
1275 | serge | 1284 | .24: |
1285 | mov eax, [current_slot] |
||
1345 | Lrz | 1286 | xchg ecx, [eax+APPDATA.exc_handler] |
1287 | xchg edx, [eax+APPDATA.except_mask] |
||
1288 | mov [esp+32], ecx ; reg_eax+8 |
||
1289 | mov [esp+20], edx ; reg_ebx+8 |
||
1275 | serge | 1290 | ret |
1291 | .25: |
||
1345 | Lrz | 1292 | cmp ecx,32 |
1275 | serge | 1293 | jae .fail |
1294 | mov eax, [current_slot] |
||
1345 | Lrz | 1295 | btr [eax+APPDATA.except_mask],ecx |
1296 | setc byte[esp+32] |
||
1275 | serge | 1297 | jecxz @f |
1345 | Lrz | 1298 | bts [eax+APPDATA.except_mask],ecx |
1275 | serge | 1299 | @@: |
1300 | ret |
||
943 | serge | 1301 | |
164 | serge | 1302 | .fail: |
1303 | xor eax, eax |
||
1345 | Lrz | 1304 | mov [esp+32], eax |
164 | serge | 1305 | ret |
1306 | |||
1307 | align 4 |
||
819 | serge | 1308 | proc load_pe_driver stdcall, file:dword |
1309 | |||
1310 | stdcall load_PE, [file] |
||
1311 | test eax, eax |
||
1312 | jz .fail |
||
1313 | |||
1314 | mov esi, eax |
||
1315 | stdcall eax, DRV_ENTRY |
||
1316 | test eax, eax |
||
1317 | jz .fail |
||
1318 | |||
1319 | mov [eax+SRV.entry], esi |
||
1320 | ret |
||
1321 | |||
1322 | .fail: |
||
1323 | xor eax, eax |
||
1324 | ret |
||
1325 | endp |
||
1326 | |||
1327 | |||
1328 | align 4 |
||
164 | serge | 1329 | proc init_mtrr |
1330 | |||
412 | serge | 1331 | cmp [BOOT_VAR+0x901c],byte 2 |
164 | serge | 1332 | je .exit |
1333 | |||
211 | serge | 1334 | bt [cpu_caps], CAPS_MTRR |
1335 | jnc .exit |
||
1336 | |||
164 | serge | 1337 | mov eax, cr0 |
1338 | or eax, 0x60000000 ;disable caching |
||
1339 | mov cr0, eax |
||
1340 | wbinvd ;invalidate cache |
||
1341 | |||
1342 | mov ecx, 0x2FF |
||
1343 | rdmsr ; |
||
1030 | diamond | 1344 | ; has BIOS already initialized MTRRs? |
1345 | test ah, 8 |
||
1346 | jnz .skip_init |
||
1347 | ; rarely needed, so mainly placeholder |
||
1348 | ; main memory - cached |
||
164 | serge | 1349 | push eax |
1350 | |||
821 | diamond | 1351 | mov eax, [MEM_AMOUNT] |
1352 | ; round eax up to next power of 2 |
||
1353 | dec eax |
||
1354 | bsr ecx, eax |
||
1030 | diamond | 1355 | mov ebx, 2 |
1356 | shl ebx, cl |
||
1357 | dec ebx |
||
1358 | ; base of memory range = 0, type of memory range = MEM_WB |
||
164 | serge | 1359 | xor edx, edx |
1030 | diamond | 1360 | mov eax, MEM_WB |
1361 | mov ecx, 0x200 |
||
1362 | wrmsr |
||
1363 | ; mask of memory range = 0xFFFFFFFFF - (size - 1), ebx = size - 1 |
||
1364 | mov eax, 0xFFFFFFFF |
||
1365 | mov edx, 0x0000000F |
||
1366 | sub eax, ebx |
||
1367 | sbb edx, 0 |
||
1368 | or eax, 0x800 |
||
1369 | inc ecx |
||
1370 | wrmsr |
||
1371 | ; clear unused MTRRs |
||
164 | serge | 1372 | xor eax, eax |
1030 | diamond | 1373 | xor edx, edx |
164 | serge | 1374 | @@: |
1030 | diamond | 1375 | wrmsr |
164 | serge | 1376 | inc ecx |
1030 | diamond | 1377 | cmp ecx, 0x210 |
1378 | jb @b |
||
1379 | ; enable MTRRs |
||
1380 | pop eax |
||
1381 | or ah, 8 |
||
1382 | and al, 0xF0 ; default memtype = UC |
||
1383 | mov ecx, 0x2FF |
||
164 | serge | 1384 | wrmsr |
1030 | diamond | 1385 | .skip_init: |
1386 | stdcall set_mtrr, [LFBAddress],[LFBSize],MEM_WC |
||
164 | serge | 1387 | |
1388 | wbinvd ;again invalidate |
||
1389 | |||
1390 | mov eax, cr0 |
||
1391 | and eax, not 0x60000000 |
||
1392 | mov cr0, eax ; enable caching |
||
1393 | .exit: |
||
1394 | ret |
||
1395 | endp |
||
1396 | |||
1397 | align 4 |
||
1030 | diamond | 1398 | proc set_mtrr stdcall, base:dword,size:dword,mem_type:dword |
1399 | ; find unused register |
||
1400 | mov ecx, 0x201 |
||
1401 | @@: |
||
1402 | rdmsr |
||
1403 | dec ecx |
||
1404 | test ah, 8 |
||
1405 | jz .found |
||
1406 | rdmsr |
||
1407 | mov al, 0 ; clear memory type field |
||
1408 | cmp eax, [base] |
||
1409 | jz .ret |
||
1410 | add ecx, 3 |
||
1411 | cmp ecx, 0x210 |
||
1412 | jb @b |
||
1413 | ; no free registers, ignore the call |
||
1414 | .ret: |
||
1415 | ret |
||
1416 | .found: |
||
1417 | ; found, write values |
||
164 | serge | 1418 | xor edx, edx |
1419 | mov eax, [base] |
||
1420 | or eax, [mem_type] |
||
1421 | wrmsr |
||
1422 | |||
1423 | mov ebx, [size] |
||
1424 | dec ebx |
||
1425 | mov eax, 0xFFFFFFFF |
||
1426 | mov edx, 0x0000000F |
||
1427 | sub eax, ebx |
||
1428 | sbb edx, 0 |
||
1429 | or eax, 0x800 |
||
1430 | inc ecx |
||
1431 | wrmsr |
||
1432 | ret |
||
1433 | endp |
||
1434 | |||
465 | serge | 1435 | align 4 |
172 | serge | 1436 | proc stall stdcall, delay:dword |
1437 | push ecx |
||
1438 | push edx |
||
1439 | push ebx |
||
1440 | push eax |
||
1441 | |||
1442 | mov eax, [delay] |
||
1443 | mul [stall_mcs] |
||
1444 | mov ebx, eax ;low |
||
1445 | mov ecx, edx ;high |
||
1446 | rdtsc |
||
1447 | add ebx, eax |
||
1448 | adc ecx,edx |
||
1449 | @@: |
||
1450 | rdtsc |
||
1451 | sub eax, ebx |
||
1452 | sbb edx, ecx |
||
1453 | jb @B |
||
1454 | |||
1455 | pop eax |
||
1456 | pop ebx |
||
1457 | pop edx |
||
1458 | pop ecx |
||
1459 | ret |
||
1460 | endp |
||
1461 | |||
520 | serge | 1462 | align 4 |
1463 | proc create_ring_buffer stdcall, size:dword, flags:dword |
||
1464 | locals |
||
1465 | buf_ptr dd ? |
||
1466 | endl |
||
237 | serge | 1467 | |
520 | serge | 1468 | mov eax, [size] |
1469 | test eax, eax |
||
1470 | jz .fail |
||
1471 | |||
1472 | add eax, eax |
||
1473 | stdcall alloc_kernel_space, eax |
||
1474 | test eax, eax |
||
1475 | jz .fail |
||
1476 | |||
662 | serge | 1477 | push ebx |
1478 | |||
520 | serge | 1479 | mov [buf_ptr], eax |
1480 | |||
1481 | mov ebx, [size] |
||
1482 | shr ebx, 12 |
||
1483 | push ebx |
||
1484 | |||
1485 | stdcall alloc_pages, ebx |
||
1486 | pop ecx |
||
1487 | |||
1488 | test eax, eax |
||
1489 | jz .mm_fail |
||
1490 | |||
662 | serge | 1491 | push edi |
1492 | |||
520 | serge | 1493 | or eax, [flags] |
1494 | mov edi, [buf_ptr] |
||
1495 | mov ebx, [buf_ptr] |
||
1496 | mov edx, ecx |
||
566 | serge | 1497 | shl edx, 2 |
520 | serge | 1498 | shr edi, 10 |
1499 | @@: |
||
1500 | mov [page_tabs+edi], eax |
||
1501 | mov [page_tabs+edi+edx], eax |
||
924 | serge | 1502 | invlpg [ebx] |
1503 | invlpg [ebx+0x10000] |
||
520 | serge | 1504 | add eax, 0x1000 |
1505 | add ebx, 0x1000 |
||
566 | serge | 1506 | add edi, 4 |
520 | serge | 1507 | dec ecx |
1508 | jnz @B |
||
1509 | |||
1510 | mov eax, [buf_ptr] |
||
662 | serge | 1511 | pop edi |
1512 | pop ebx |
||
520 | serge | 1513 | ret |
1514 | .mm_fail: |
||
1515 | stdcall free_kernel_space, [buf_ptr] |
||
1516 | xor eax, eax |
||
662 | serge | 1517 | pop ebx |
520 | serge | 1518 | .fail: |
1519 | ret |
||
1520 | endp0>>=> |