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| Rev 285 | Rev 291 | ||
|---|---|---|---|
| Line 252... | Line 252... | ||
| 252 | proc free_page |
252 | proc free_page |
| 253 | ;arg: eax page address |
253 | ;arg: eax page address |
| 254 | pushfd |
254 | pushfd |
| 255 | cli |
255 | cli |
| 256 | inc [pg_data.pages_free] |
256 | shr eax, 12 ;page index |
| 257 | shr eax, 12 ;page index |
- | |
| 258 | mov ebx, sys_pgmap |
257 | mov ebx, sys_pgmap |
| 259 | bts [ebx], eax ;that's all! |
258 | bts [ebx], eax ;that's all! |
| 260 | shr eax, 3 |
259 | cmc |
| - | 260 | adc [pg_data.pages_free], 0 |
|
| - | 261 | shr eax, 3 |
|
| 261 | and eax, not 3 ;dword offset from page_map |
262 | and eax, not 3 ;dword offset from page_map |
| 262 | add eax, ebx |
263 | add eax, ebx |
| 263 | cmp [page_start], eax |
264 | cmp [page_start], eax |
| 264 | ja @f |
265 | ja @f |
| 265 | popfd |
266 | popfd |
| Line 287... | Line 288... | ||
| 287 | 288 | ||
| Line 288... | Line 289... | ||
| 288 | align 4 |
289 | align 4 |
| 289 | release_pages: |
290 | release_pages: |
| Line -... | Line 291... | ||
| - | 291 | ||
| 290 | 292 | push ebp |
|
| 291 | mov ebx, pg_data.pg_mutex |
293 | mov ebx, pg_data.pg_mutex |
| Line 292... | Line 294... | ||
| 292 | call wait_mutex ;ebx |
294 | call wait_mutex ;ebx |
| 293 | 295 | ||
| Line 294... | Line 296... | ||
| 294 | mov esi, eax |
296 | mov esi, eax |
| 295 | mov edi, eax |
297 | mov edi, eax |
| Line -... | Line 298... | ||
| - | 298 | ||
| 296 | 299 | shr esi, 10 |
|
| 297 | shr esi, 10 |
300 | add esi, pages_tab |
| 298 | add esi, pages_tab |
301 | |
| 299 | 302 | mov ebp, [pg_data.pages_free] |
|
| 300 | mov ebx, [page_start] |
303 | mov ebx, [page_start] |
| Line 308... | Line 311... | ||
| 308 | jz .next |
311 | jz .next |
| 309 | 312 | ||
| Line 310... | Line 313... | ||
| 310 | shr eax, 12 |
313 | shr eax, 12 |
| 311 | bts [edx], eax |
314 | bts [edx], eax |
| - | 315 | cmc |
|
| 312 | inc [pg_data.pages_free] |
316 | adc ebp, 0 |
| 313 | shr eax, 3 |
317 | shr eax, 3 |
| 314 | and eax, -4 |
318 | and eax, -4 |
| 315 | add eax, edx |
319 | add eax, edx |
| 316 | cmp eax, ebx |
320 | cmp eax, ebx |
| 317 | jae .next |
321 | jae .next |
| Line 321... | Line 325... | ||
| 321 | add edi, 0x1000 |
325 | add edi, 0x1000 |
| 322 | add esi, 4 |
326 | add esi, 4 |
| 323 | dec ecx |
327 | dec ecx |
| 324 | jnz @B |
328 | jnz @B |
| 325 | 329 | mov [pg_data.pages_free], ebp |
|
| 326 | and [pg_data.pg_mutex],0 |
- | |
| - | 330 | and [pg_data.pg_mutex],0 |
|
| 327 | ret |
331 | pop ebp |
| - | 332 | ret |
|
| 328 | 333 | ||
| Line 329... | Line 334... | ||
| 329 | align 4 |
334 | align 4 |
| 330 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
335 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
| 331 | mov ebx, [lin_addr] |
336 | mov ebx, [lin_addr] |