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Rev 536 | Rev 566 | ||
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1 | $Revision: 536 $ |
1 | $Revision: 566 $ |
2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
3 | ;; ;; |
3 | ;; ;; |
4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
4 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
5 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; Distributed under terms of the GNU General Public License ;; |
6 | ;; ;; |
6 | ;; ;; |
7 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
7 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
8 | 8 | ||
9 | align 4 |
9 | align 4 |
10 | proc alloc_page |
10 | proc alloc_page |
11 | 11 | ||
12 | pushfd |
12 | pushfd |
13 | cli |
13 | cli |
14 | mov ebx, [page_start] |
14 | mov ebx, [page_start] |
15 | mov ecx, [page_end] |
15 | mov ecx, [page_end] |
16 | .l1: |
16 | .l1: |
17 | bsf eax,[ebx]; |
17 | bsf eax,[ebx]; |
18 | jnz .found |
18 | jnz .found |
19 | add ebx,4 |
19 | add ebx,4 |
20 | cmp ebx, ecx |
20 | cmp ebx, ecx |
21 | jb .l1 |
21 | jb .l1 |
22 | popfd |
22 | popfd |
23 | xor eax,eax |
23 | xor eax,eax |
24 | ret |
24 | ret |
25 | .found: |
25 | .found: |
26 | btr [ebx], eax |
26 | btr [ebx], eax |
27 | mov [page_start],ebx |
27 | mov [page_start],ebx |
28 | sub ebx, sys_pgmap |
28 | sub ebx, sys_pgmap |
29 | lea eax, [eax+ebx*8] |
29 | lea eax, [eax+ebx*8] |
30 | shl eax, 12 |
30 | shl eax, 12 |
31 | dec [pg_data.pages_free] |
31 | dec [pg_data.pages_free] |
32 | popfd |
32 | popfd |
33 | ret |
33 | ret |
34 | endp |
34 | endp |
35 | 35 | ||
36 | align 4 |
36 | align 4 |
37 | proc alloc_pages stdcall, count:dword |
37 | proc alloc_pages stdcall, count:dword |
38 | pushfd |
38 | pushfd |
39 | cli |
39 | cli |
40 | mov eax, [count] |
40 | mov eax, [count] |
41 | add eax, 7 |
41 | add eax, 7 |
42 | shr eax, 3 |
42 | shr eax, 3 |
43 | mov [count], eax |
43 | mov [count], eax |
44 | cmp eax, [pg_data.pages_free] |
44 | cmp eax, [pg_data.pages_free] |
45 | ja .fail |
45 | ja .fail |
46 | 46 | ||
47 | mov ecx, [page_start] |
47 | mov ecx, [page_start] |
48 | mov ebx, [page_end] |
48 | mov ebx, [page_end] |
49 | .find: |
49 | .find: |
50 | mov edx, [count] |
50 | mov edx, [count] |
51 | mov edi, ecx |
51 | mov edi, ecx |
52 | .match: |
52 | .match: |
53 | cmp byte [ecx], 0xFF |
53 | cmp byte [ecx], 0xFF |
54 | jne .next |
54 | jne .next |
55 | dec edx |
55 | dec edx |
56 | jz .ok |
56 | jz .ok |
57 | inc ecx |
57 | inc ecx |
58 | cmp ecx,ebx |
58 | cmp ecx,ebx |
59 | jb .match |
59 | jb .match |
60 | .fail: xor eax, eax |
60 | .fail: xor eax, eax |
61 | popfd |
61 | popfd |
62 | ret |
62 | ret |
63 | .next: |
63 | .next: |
64 | inc ecx |
64 | inc ecx |
65 | cmp ecx, ebx |
65 | cmp ecx, ebx |
66 | jb .find |
66 | jb .find |
67 | popfd |
67 | popfd |
68 | xor eax, eax |
68 | xor eax, eax |
69 | ret |
69 | ret |
70 | .ok: |
70 | .ok: |
71 | sub ecx, edi |
71 | sub ecx, edi |
72 | inc ecx |
72 | inc ecx |
73 | mov esi, edi |
73 | mov esi, edi |
74 | xor eax, eax |
74 | xor eax, eax |
75 | rep stosb |
75 | rep stosb |
76 | sub esi, sys_pgmap |
76 | sub esi, sys_pgmap |
77 | shl esi, 3+12 |
77 | shl esi, 3+12 |
78 | mov eax, esi |
78 | mov eax, esi |
79 | mov ebx, [count] |
79 | mov ebx, [count] |
80 | shl ebx, 3 |
80 | shl ebx, 3 |
81 | sub [pg_data.pages_free], ebx |
81 | sub [pg_data.pages_free], ebx |
82 | popfd |
82 | popfd |
83 | ret |
83 | ret |
84 | endp |
84 | endp |
85 | 85 | ||
86 | align 4 |
86 | align 4 |
87 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
87 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
88 | push ebx |
88 | push ebx |
89 | mov eax, [phis_addr] |
89 | mov eax, [phis_addr] |
90 | and eax, not 0xFFF |
90 | and eax, not 0xFFF |
91 | or eax, [flags] |
91 | or eax, [flags] |
92 | mov ebx, [lin_addr] |
92 | mov ebx, [lin_addr] |
93 | shr ebx, 12 |
93 | shr ebx, 12 |
94 | mov [page_tabs+ebx*4], eax |
94 | mov [page_tabs+ebx*4], eax |
95 | mov eax, [lin_addr] |
95 | mov eax, [lin_addr] |
96 | invlpg [eax] |
96 | invlpg [eax] |
97 | pop ebx |
97 | pop ebx |
98 | ret |
98 | ret |
99 | endp |
99 | endp |
100 | 100 | ||
101 | align 4 |
101 | align 4 |
102 | map_space: ;not implemented |
102 | map_space: ;not implemented |
103 | 103 | ||
104 | 104 | ||
105 | ret |
105 | ret |
106 | 106 | ||
107 | 107 | ||
108 | align 4 |
108 | align 4 |
109 | proc free_page |
109 | proc free_page |
110 | ;arg: eax page address |
110 | ;arg: eax page address |
111 | pushfd |
111 | pushfd |
112 | cli |
112 | cli |
113 | shr eax, 12 ;page index |
113 | shr eax, 12 ;page index |
114 | bts dword [sys_pgmap], eax ;that's all! |
114 | bts dword [sys_pgmap], eax ;that's all! |
115 | cmc |
115 | cmc |
116 | adc [pg_data.pages_free], 0 |
116 | adc [pg_data.pages_free], 0 |
117 | shr eax, 3 |
117 | shr eax, 3 |
118 | and eax, not 3 ;dword offset from page_map |
118 | and eax, not 3 ;dword offset from page_map |
119 | add eax, sys_pgmap |
119 | add eax, sys_pgmap |
120 | cmp [page_start], eax |
120 | cmp [page_start], eax |
121 | ja @f |
121 | ja @f |
122 | popfd |
122 | popfd |
123 | ret |
123 | ret |
124 | @@: |
124 | @@: |
125 | mov [page_start], eax |
125 | mov [page_start], eax |
126 | popfd |
126 | popfd |
127 | ret |
127 | ret |
128 | endp |
128 | endp |
129 | 129 | ||
130 | ; param |
130 | ; param |
131 | ; eax= page base + page flags |
131 | ; eax= page base + page flags |
132 | ; ebx= liear address |
132 | ; ebx= liear address |
133 | ; ecx= count |
133 | ; ecx= count |
134 | 134 | ||
135 | align 4 |
135 | align 4 |
136 | commit_pages: |
136 | commit_pages: |
137 | 137 | ||
138 | test ecx, ecx |
138 | test ecx, ecx |
139 | jz .fail |
139 | jz .fail |
140 | 140 | ||
141 | mov edi, ebx |
141 | mov edi, ebx |
142 | mov ebx, pg_data.pg_mutex |
142 | mov ebx, pg_data.pg_mutex |
143 | call wait_mutex ;ebx |
143 | call wait_mutex ;ebx |
144 | 144 | ||
145 | mov edx, 0x1000 |
145 | mov edx, 0x1000 |
146 | mov ebx, edi |
146 | mov ebx, edi |
147 | shr ebx, 12 |
147 | shr ebx, 12 |
148 | @@: |
148 | @@: |
149 | mov [page_tabs+ebx*4], eax |
149 | mov [page_tabs+ebx*4], eax |
150 | invlpg [edi] |
150 | invlpg [edi] |
151 | add edi, edx |
151 | add edi, edx |
152 | add eax, edx |
152 | add eax, edx |
153 | inc ebx |
153 | inc ebx |
154 | dec ecx |
154 | dec ecx |
155 | jnz @B |
155 | jnz @B |
156 | mov [pg_data.pg_mutex],ecx |
156 | mov [pg_data.pg_mutex],ecx |
157 | .fail: |
157 | .fail: |
158 | ret |
158 | ret |
159 | 159 | ||
160 | 160 | ||
161 | ; param |
161 | ; param |
162 | ; eax= base |
162 | ; eax= base |
163 | ; ecx= count |
163 | ; ecx= count |
164 | 164 | ||
165 | align 4 |
165 | align 4 |
166 | release_pages: |
166 | release_pages: |
167 | 167 | ||
168 | pushad |
168 | pushad |
169 | mov ebx, pg_data.pg_mutex |
169 | mov ebx, pg_data.pg_mutex |
170 | call wait_mutex ;ebx |
170 | call wait_mutex ;ebx |
171 | 171 | ||
172 | mov esi, eax |
172 | mov esi, eax |
173 | mov edi, eax |
173 | mov edi, eax |
174 | 174 | ||
175 | shr esi, 10 |
175 | shr esi, 10 |
176 | add esi, page_tabs |
176 | add esi, page_tabs |
177 | 177 | ||
178 | mov ebp, [pg_data.pages_free] |
178 | mov ebp, [pg_data.pages_free] |
179 | mov ebx, [page_start] |
179 | mov ebx, [page_start] |
180 | mov edx, sys_pgmap |
180 | mov edx, sys_pgmap |
181 | @@: |
181 | @@: |
182 | xor eax, eax |
182 | xor eax, eax |
183 | xchg eax, [esi] |
183 | xchg eax, [esi] |
184 | invlpg [edi] |
184 | invlpg [edi] |
185 | 185 | ||
186 | test eax, 1 |
186 | test eax, 1 |
187 | jz .next |
187 | jz .next |
188 | 188 | ||
189 | shr eax, 12 |
189 | shr eax, 12 |
190 | bts [edx], eax |
190 | bts [edx], eax |
191 | cmc |
191 | cmc |
192 | adc ebp, 0 |
192 | adc ebp, 0 |
193 | shr eax, 3 |
193 | shr eax, 3 |
194 | and eax, -4 |
194 | and eax, -4 |
195 | add eax, edx |
195 | add eax, edx |
196 | cmp eax, ebx |
196 | cmp eax, ebx |
197 | jae .next |
197 | jae .next |
198 | 198 | ||
199 | mov ebx, eax |
199 | mov ebx, eax |
200 | .next: |
200 | .next: |
201 | add edi, 0x1000 |
201 | add edi, 0x1000 |
202 | add esi, 4 |
202 | add esi, 4 |
203 | dec ecx |
203 | dec ecx |
204 | jnz @B |
204 | jnz @B |
205 | mov [pg_data.pages_free], ebp |
205 | mov [pg_data.pages_free], ebp |
206 | and [pg_data.pg_mutex],0 |
206 | and [pg_data.pg_mutex],0 |
207 | popad |
207 | popad |
208 | ret |
208 | ret |
209 | 209 | ||
210 | align 4 |
210 | align 4 |
211 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
211 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
212 | push ebx |
212 | push ebx |
213 | mov ebx, [lin_addr] |
213 | mov ebx, [lin_addr] |
214 | shr ebx, 22 |
214 | shr ebx, 22 |
215 | mov eax, [phis_addr] |
215 | mov eax, [phis_addr] |
216 | and eax, not 0xFFF |
216 | and eax, not 0xFFF |
217 | or eax, PG_UW ;+PG_NOCACHE |
217 | or eax, PG_UW ;+PG_NOCACHE |
218 | mov dword [master_tab+ebx*4], eax |
218 | mov dword [master_tab+ebx*4], eax |
219 | mov eax, [lin_addr] |
219 | mov eax, [lin_addr] |
220 | shr eax, 10 |
220 | shr eax, 10 |
221 | add eax, page_tabs |
221 | add eax, page_tabs |
222 | invlpg [eax] |
222 | invlpg [eax] |
223 | pop ebx |
223 | pop ebx |
224 | ret |
224 | ret |
225 | endp |
225 | endp |
226 | 226 | ||
227 | align 4 |
227 | align 4 |
228 | proc init_LFB |
228 | proc init_LFB |
229 | locals |
229 | locals |
230 | pg_count dd ? |
230 | pg_count dd ? |
231 | endl |
231 | endl |
232 | 232 | ||
233 | cmp dword [LFBAddress], -1 |
233 | cmp dword [LFBAddress], -1 |
234 | jne @f |
234 | jne @f |
235 | mov [BOOT_VAR+0x901c],byte 2 |
235 | mov [BOOT_VAR+0x901c],byte 2 |
236 | stdcall kernel_alloc, 0x280000 |
236 | stdcall kernel_alloc, 0x280000 |
237 | mov [LFBAddress], eax |
237 | mov [LFBAddress], eax |
238 | ret |
238 | ret |
239 | @@: |
239 | @@: |
240 | test [SCR_MODE],word 0100000000000000b |
240 | test [SCR_MODE],word 0100000000000000b |
241 | jnz @f |
241 | jnz @f |
242 | mov [BOOT_VAR+0x901c],byte 2 |
242 | mov [BOOT_VAR+0x901c],byte 2 |
243 | ret |
243 | ret |
244 | @@: |
244 | @@: |
245 | call init_mtrr |
245 | call init_mtrr |
246 | 246 | ||
247 | mov edx, LFB_BASE |
247 | mov edx, LFB_BASE |
248 | mov esi, [LFBAddress] |
248 | mov esi, [LFBAddress] |
249 | mov edi, 0x00800000 |
249 | mov edi, 0x00800000 |
250 | mov dword [exp_lfb+4], edx |
250 | mov dword [exp_lfb+4], edx |
251 | 251 | ||
252 | shr edi, 12 |
252 | shr edi, 12 |
253 | mov [pg_count], edi |
253 | mov [pg_count], edi |
254 | shr edi, 10 |
254 | shr edi, 10 |
255 | 255 | ||
256 | bt [cpu_caps], CAPS_PSE |
256 | bt [cpu_caps], CAPS_PSE |
257 | jnc .map_page_tables |
257 | jnc .map_page_tables |
258 | or esi, PG_LARGE+PG_UW |
258 | or esi, PG_LARGE+PG_UW |
259 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
259 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
260 | @@: |
260 | @@: |
261 | mov [edx], esi |
261 | mov [edx], esi |
262 | add edx, 4 |
262 | add edx, 4 |
263 | add esi, 0x00400000 |
263 | add esi, 0x00400000 |
264 | dec edi |
264 | dec edi |
265 | jnz @B |
265 | jnz @B |
266 | 266 | ||
267 | bt [cpu_caps], CAPS_PGE |
267 | bt [cpu_caps], CAPS_PGE |
268 | jnc @F |
268 | jnc @F |
269 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
269 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
270 | @@: |
270 | @@: |
271 | mov dword [LFBAddress], LFB_BASE |
271 | mov dword [LFBAddress], LFB_BASE |
272 | mov eax, cr3 ;flush TLB |
272 | mov eax, cr3 ;flush TLB |
273 | mov cr3, eax |
273 | mov cr3, eax |
274 | ret |
274 | ret |
275 | 275 | ||
276 | .map_page_tables: |
276 | .map_page_tables: |
277 | 277 | ||
278 | @@: |
278 | @@: |
279 | call alloc_page |
279 | call alloc_page |
280 | stdcall map_page_table, edx, eax |
280 | stdcall map_page_table, edx, eax |
281 | add edx, 0x00400000 |
281 | add edx, 0x00400000 |
282 | dec edi |
282 | dec edi |
283 | jnz @B |
283 | jnz @B |
284 | 284 | ||
285 | mov eax, [LFBAddress] |
285 | mov eax, [LFBAddress] |
286 | mov edi, page_tabs + (LFB_BASE shr 10) |
286 | mov edi, page_tabs + (LFB_BASE shr 10) |
287 | or eax, PG_UW |
287 | or eax, PG_UW |
288 | mov ecx, [pg_count] |
288 | mov ecx, [pg_count] |
289 | cld |
289 | cld |
290 | @@: |
290 | @@: |
291 | stosd |
291 | stosd |
292 | add eax, 0x1000 |
292 | add eax, 0x1000 |
293 | dec ecx |
293 | dec ecx |
294 | jnz @B |
294 | jnz @B |
295 | 295 | ||
296 | mov dword [LFBAddress], LFB_BASE |
296 | mov dword [LFBAddress], LFB_BASE |
297 | mov eax, cr3 ;flush TLB |
297 | mov eax, cr3 ;flush TLB |
298 | mov cr3, eax |
298 | mov cr3, eax |
299 | 299 | ||
300 | ret |
300 | ret |
301 | endp |
301 | endp |
302 | 302 | ||
303 | align 4 |
303 | align 4 |
304 | proc new_mem_resize stdcall, new_size:dword |
304 | proc new_mem_resize stdcall, new_size:dword |
305 | 305 | ||
306 | mov ebx, pg_data.pg_mutex |
306 | mov ebx, pg_data.pg_mutex |
307 | call wait_mutex ;ebx |
307 | call wait_mutex ;ebx |
308 | 308 | ||
309 | mov edi, [new_size] |
309 | mov edi, [new_size] |
310 | add edi,4095 |
310 | add edi,4095 |
311 | and edi,not 4095 |
311 | and edi,not 4095 |
312 | mov [new_size], edi |
312 | mov [new_size], edi |
313 | 313 | ||
314 | mov edx,[current_slot] |
314 | mov edx,[current_slot] |
315 | cmp [edx+APPDATA.heap_base],0 |
315 | cmp [edx+APPDATA.heap_base],0 |
316 | jne .exit |
316 | jne .exit |
317 | 317 | ||
318 | mov esi, [edx+APPDATA.mem_size] |
318 | mov esi, [edx+APPDATA.mem_size] |
319 | add esi, 4095 |
319 | add esi, 4095 |
320 | and esi, not 4095 |
320 | and esi, not 4095 |
321 | 321 | ||
322 | cmp edi, esi |
322 | cmp edi, esi |
323 | jae .expand |
323 | jae .expand |
324 | 324 | ||
325 | shr edi, 12 |
325 | shr edi, 12 |
326 | shr esi, 12 |
326 | shr esi, 12 |
327 | @@: |
327 | @@: |
328 | mov eax, [app_page_tabs+edi*4] |
328 | mov eax, [app_page_tabs+edi*4] |
329 | test eax, 1 |
329 | test eax, 1 |
330 | jz .next |
330 | jz .next |
331 | mov dword [app_page_tabs+edi*4], 2 |
331 | mov dword [app_page_tabs+edi*4], 2 |
332 | mov ebx, edi |
332 | mov ebx, edi |
333 | shl ebx, 12 |
333 | shl ebx, 12 |
334 | invlpg [ebx+std_application_base_address] |
334 | invlpg [ebx+std_application_base_address] |
335 | call free_page |
335 | call free_page |
336 | 336 | ||
337 | .next: add edi, 1 |
337 | .next: add edi, 1 |
338 | cmp edi, esi |
338 | cmp edi, esi |
339 | jb @B |
339 | jb @B |
340 | 340 | ||
341 | .update_size: |
341 | .update_size: |
342 | mov ebx, [new_size] |
342 | mov ebx, [new_size] |
343 | call update_mem_size |
343 | call update_mem_size |
344 | 344 | ||
345 | xor eax, eax |
345 | xor eax, eax |
346 | dec [pg_data.pg_mutex] |
346 | dec [pg_data.pg_mutex] |
347 | ret |
347 | ret |
348 | .expand: |
348 | .expand: |
349 | 349 | ||
350 | push esi |
350 | push esi |
351 | push edi |
351 | push edi |
352 | 352 | ||
353 | add edi, 0x3FFFFF |
353 | add edi, 0x3FFFFF |
354 | and edi, not(0x3FFFFF) |
354 | and edi, not(0x3FFFFF) |
355 | add esi, 0x3FFFFF |
355 | add esi, 0x3FFFFF |
356 | and esi, not(0x3FFFFF) |
356 | and esi, not(0x3FFFFF) |
357 | 357 | ||
358 | cmp esi, edi |
358 | cmp esi, edi |
359 | jae .grow |
359 | jae .grow |
360 | 360 | ||
361 | xchg esi, edi |
361 | xchg esi, edi |
362 | 362 | ||
363 | @@: |
363 | @@: |
364 | call alloc_page |
364 | call alloc_page |
365 | test eax, eax |
365 | test eax, eax |
366 | jz .exit |
366 | jz .exit |
367 | 367 | ||
368 | stdcall map_page_table, edi, eax |
368 | stdcall map_page_table, edi, eax |
369 | 369 | ||
370 | push edi |
370 | push edi |
371 | shr edi, 10 |
371 | shr edi, 10 |
372 | add edi, page_tabs |
372 | add edi, page_tabs |
373 | mov ecx, 1024 |
373 | mov ecx, 1024 |
374 | xor eax, eax |
374 | xor eax, eax |
375 | cld |
375 | cld |
376 | rep stosd |
376 | rep stosd |
377 | pop edi |
377 | pop edi |
378 | 378 | ||
379 | add edi, 0x00400000 |
379 | add edi, 0x00400000 |
380 | cmp edi, esi |
380 | cmp edi, esi |
381 | jb @B |
381 | jb @B |
382 | .grow: |
382 | .grow: |
383 | pop edi |
383 | pop edi |
384 | pop esi |
384 | pop esi |
385 | @@: |
385 | @@: |
386 | call alloc_page |
386 | call alloc_page |
387 | test eax, eax |
387 | test eax, eax |
388 | jz .exit |
388 | jz .exit |
389 | stdcall map_page,esi,eax,dword PG_UW |
389 | stdcall map_page,esi,eax,dword PG_UW |
390 | 390 | ||
391 | push edi |
391 | push edi |
392 | mov edi, esi |
392 | mov edi, esi |
393 | xor eax, eax |
393 | xor eax, eax |
394 | mov ecx, 1024 |
394 | mov ecx, 1024 |
395 | cld |
395 | cld |
396 | rep stosd |
396 | rep stosd |
397 | pop edi |
397 | pop edi |
398 | 398 | ||
399 | add esi, 0x1000 |
399 | add esi, 0x1000 |
400 | cmp esi, edi |
400 | cmp esi, edi |
401 | jb @B |
401 | jb @B |
402 | 402 | ||
403 | jmp .update_size |
403 | jmp .update_size |
404 | .exit: |
404 | .exit: |
405 | xor eax, eax |
405 | xor eax, eax |
406 | inc eax |
406 | inc eax |
407 | dec [pg_data.pg_mutex] |
407 | dec [pg_data.pg_mutex] |
408 | ret |
408 | ret |
409 | endp |
409 | endp |
410 | 410 | ||
411 | update_mem_size: |
411 | update_mem_size: |
412 | ; in: edx = slot base |
412 | ; in: edx = slot base |
413 | ; ebx = new memory size |
413 | ; ebx = new memory size |
414 | ; destroys eax,ecx,edx |
414 | ; destroys eax,ecx,edx |
415 | 415 | ||
416 | mov [APPDATA.mem_size+edx],ebx |
416 | mov [APPDATA.mem_size+edx],ebx |
417 | ;search threads and update |
417 | ;search threads and update |
418 | ;application memory size infomation |
418 | ;application memory size infomation |
419 | mov ecx,[APPDATA.dir_table+edx] |
419 | mov ecx,[APPDATA.dir_table+edx] |
420 | mov eax,2 |
420 | mov eax,2 |
421 | 421 | ||
422 | .search_threads: |
422 | .search_threads: |
423 | ;eax = current slot |
423 | ;eax = current slot |
424 | ;ebx = new memory size |
424 | ;ebx = new memory size |
425 | ;ecx = page directory |
425 | ;ecx = page directory |
426 | cmp eax,[TASK_COUNT] |
426 | cmp eax,[TASK_COUNT] |
427 | jg .search_threads_end |
427 | jg .search_threads_end |
428 | mov edx,eax |
428 | mov edx,eax |
429 | shl edx,5 |
429 | shl edx,5 |
430 | cmp word [CURRENT_TASK+edx+TASKDATA.state],9 ;if slot empty? |
430 | cmp word [CURRENT_TASK+edx+TASKDATA.state],9 ;if slot empty? |
431 | jz .search_threads_next |
431 | jz .search_threads_next |
432 | shl edx,3 |
432 | shl edx,3 |
433 | cmp [SLOT_BASE+edx+APPDATA.dir_table],ecx ;if it is our thread? |
433 | cmp [SLOT_BASE+edx+APPDATA.dir_table],ecx ;if it is our thread? |
434 | jnz .search_threads_next |
434 | jnz .search_threads_next |
435 | mov [SLOT_BASE+edx+APPDATA.mem_size],ebx ;update memory size |
435 | mov [SLOT_BASE+edx+APPDATA.mem_size],ebx ;update memory size |
436 | .search_threads_next: |
436 | .search_threads_next: |
437 | inc eax |
437 | inc eax |
438 | jmp .search_threads |
438 | jmp .search_threads |
439 | .search_threads_end: |
439 | .search_threads_end: |
440 | ret |
440 | ret |
441 | 441 | ||
442 | ; param |
442 | ; param |
443 | ; eax= linear address |
443 | ; eax= linear address |
444 | ; |
444 | ; |
445 | ; retval |
445 | ; retval |
446 | ; eax= phisical page address |
446 | ; eax= phisical page address |
447 | 447 | ||
448 | align 4 |
448 | align 4 |
449 | get_pg_addr: |
449 | get_pg_addr: |
450 | shr eax, 12 |
450 | shr eax, 12 |
451 | mov eax, [page_tabs+eax*4] |
451 | mov eax, [page_tabs+eax*4] |
452 | and eax, 0xFFFFF000 |
452 | and eax, 0xFFFFF000 |
453 | ret |
453 | ret |
454 | 454 | ||
455 | 455 | ||
456 | align 4 |
456 | align 4 |
457 | proc page_fault_handler |
457 | proc page_fault_handler |
458 | 458 | ||
459 | .err_code equ ebp+32 |
459 | .err_code equ ebp+32 |
460 | .err_addr equ ebp-4 |
460 | .err_addr equ ebp-4 |
461 | 461 | ||
462 | pushad |
462 | pushad |
463 | mov ebp, esp |
463 | mov ebp, esp |
464 | mov eax, cr2 |
464 | mov eax, cr2 |
465 | push eax |
465 | push eax |
466 | 466 | ||
467 | mov ax, app_data |
467 | mov ax, app_data |
468 | mov ds, ax |
468 | mov ds, ax |
469 | mov es, ax |
469 | mov es, ax |
470 | 470 | ||
471 | inc [pg_data.pages_faults] |
471 | inc [pg_data.pages_faults] |
472 | 472 | ||
473 | ; push eax |
473 | ; push eax |
474 | ; push edx |
474 | ; push edx |
475 | ; mov edx, 0x400 ;bochs |
475 | ; mov edx, 0x400 ;bochs |
476 | ; mov al,0xff ;bochs |
476 | ; mov al,0xff ;bochs |
477 | ; out dx, al ;bochs |
477 | ; out dx, al ;bochs |
478 | ; pop edx |
478 | ; pop edx |
479 | ; pop eax |
479 | ; pop eax |
480 | 480 | ||
481 | mov ebx, [.err_addr] |
481 | mov ebx, [.err_addr] |
482 | mov eax, [.err_code] |
482 | mov eax, [.err_code] |
483 | 483 | ||
484 | cmp ebx, OS_BASE |
484 | cmp ebx, OS_BASE |
485 | jb .user_space ;ñòðà Ãèöà â ïà ìÿòè ïðèëîæåÃèÿ ; |
485 | jb .user_space ;ñòðà Ãèöà â ïà ìÿòè ïðèëîæåÃèÿ ; |
486 | 486 | ||
487 | cmp ebx, page_tabs |
487 | cmp ebx, page_tabs |
488 | jb .kernel_space ;ñòðà Ãèöà â ïà ìÿòè ÿäðà |
488 | jb .kernel_space ;ñòðà Ãèöà â ïà ìÿòè ÿäðà |
489 | 489 | ||
490 | cmp ebx, kernel_tabs |
490 | cmp ebx, kernel_tabs |
491 | jb .alloc;.app_tabs ;òà áëèöû ñòðà Ãèö ïðèëîæåÃèÿ ; |
491 | jb .alloc;.app_tabs ;òà áëèöû ñòðà Ãèö ïðèëîæåÃèÿ ; |
492 | ;ïðîñòî ñîçäà äèì îäÃó |
492 | ;ïðîñòî ñîçäà äèì îäÃó |
493 | 493 | ||
494 | cmp ebx, LFB_BASE |
494 | cmp ebx, LFB_BASE |
495 | jb .core_tabs ;òà áëèöû ñòðà Ãèö ÿäðà |
495 | jb .core_tabs ;òà áëèöû ñòðà Ãèö ÿäðà |
496 | ;Îøèáêà |
496 | ;Îøèáêà |
497 | .lfb: |
497 | .lfb: |
498 | ;îáëà ñòü LFB |
498 | ;îáëà ñòü LFB |
499 | ;Îøèáêà |
499 | ;Îøèáêà |
500 | jmp .fail |
500 | jmp .fail |
501 | 501 | ||
502 | align 4 |
502 | align 4 |
503 | .user_space: |
503 | .user_space: |
504 | test eax, PG_MAP |
504 | test eax, PG_MAP |
505 | jnz .err_access ;Ñòðà Ãèöà ïðèñóòñòâóåò |
505 | jnz .err_access ;Ñòðà Ãèöà ïðèñóòñòâóåò |
506 | ;Îøèáêà äîñòóïà ? |
506 | ;Îøèáêà äîñòóïà ? |
507 | 507 | ||
508 | shr ebx, 12 |
508 | shr ebx, 12 |
509 | mov ecx, ebx |
509 | mov ecx, ebx |
510 | shr ecx, 10 |
510 | shr ecx, 10 |
511 | mov edx, [master_tab+ecx*4] |
511 | mov edx, [master_tab+ecx*4] |
512 | test edx, PG_MAP |
512 | test edx, PG_MAP |
513 | jz .fail ;òà áëèöà ñòðà Ãèö ÃÃ¥ ñîçäà Ãà |
513 | jz .fail ;òà áëèöà ñòðà Ãèö ÃÃ¥ ñîçäà Ãà |
514 | ;ÃåâåðÃûé à äðåñ â ïðîãðà ììå |
514 | ;ÃåâåðÃûé à äðåñ â ïðîãðà ììå |
515 | 515 | ||
516 | mov eax, [page_tabs+ebx*4] |
516 | mov eax, [page_tabs+ebx*4] |
517 | test eax, 2 |
517 | test eax, 2 |
518 | jz .fail ;à äðåñ ÃÃ¥ çà ðåçåðâèðîâà à äëÿ ; |
518 | jz .fail ;à äðåñ ÃÃ¥ çà ðåçåðâèðîâà à äëÿ ; |
519 | ;èñïîëüçîâà Ãèÿ. Îøèáêà |
519 | ;èñïîëüçîâà Ãèÿ. Îøèáêà |
520 | .alloc: |
520 | .alloc: |
521 | call alloc_page |
521 | call alloc_page |
522 | and eax, eax |
522 | test eax, eax |
523 | jz .fail |
523 | jz .fail |
524 | 524 | ||
525 | stdcall map_page,[ebp-4],eax,dword PG_UW |
525 | stdcall map_page,[ebp-4],eax,dword PG_UW |
526 | 526 | ||
527 | mov edi, [ebp-4] |
527 | mov edi, [ebp-4] |
528 | and edi, 0xFFFFF000 |
528 | and edi, 0xFFFFF000 |
529 | mov ecx, 1024 |
529 | mov ecx, 1024 |
530 | xor eax, eax |
530 | xor eax, eax |
531 | cld |
531 | cld |
532 | rep stosd |
532 | rep stosd |
533 | .exit: |
533 | .exit: |
534 | mov esp, ebp |
534 | mov esp, ebp |
535 | popad |
535 | popad |
536 | add esp, 4 |
536 | add esp, 4 |
537 | iretd |
537 | iretd |
538 | 538 | ||
539 | .err_access: |
539 | .err_access: |
540 | ;Ãèêîãäà ÃÃ¥ ïðîèñõîäèò |
540 | ;Ãèêîãäà ÃÃ¥ ïðîèñõîäèò |
541 | jmp .fail |
541 | jmp .fail |
542 | 542 | ||
543 | .kernel_space: |
543 | .kernel_space: |
544 | test eax, PG_MAP |
544 | test eax, PG_MAP |
545 | jz .fail ;ñòðà Ãèöà ÃÃ¥ ïðèñóòñòâóåò |
545 | jz .fail ;ñòðà Ãèöà ÃÃ¥ ïðèñóòñòâóåò |
546 | 546 | ||
547 | test eax, 4 ;U/S |
547 | test eax, 4 ;U/S |
548 | jnz .fail ;ïðèëîæåÃèå îáðà òèëîñü ê ïà ìÿòè |
548 | jnz .fail ;ïðèëîæåÃèå îáðà òèëîñü ê ïà ìÿòè |
549 | ;ÿäðà |
549 | ;ÿäðà |
550 | test eax, 8 |
550 | test eax, 8 |
551 | jnz .fail ;óñòà Ãîâëåà çà ðåçåðâèðîâà ÃÃûé áèò |
551 | jnz .fail ;óñòà Ãîâëåà çà ðåçåðâèðîâà ÃÃûé áèò |
552 | ;â òà áëèöà õ ñòðà Ãèö. äîáà âëåÃî â P4/Xeon |
552 | ;â òà áëèöà õ ñòðà Ãèö. äîáà âëåÃî â P4/Xeon |
553 | 553 | ||
554 | ;ïîïûòêà çà ïèñè â çà ùèù¸ÃÃóþ ñòðà Ãèöó ÿäðà |
554 | ;ïîïûòêà çà ïèñè â çà ùèù¸ÃÃóþ ñòðà Ãèöó ÿäðà |
555 | 555 | ||
556 | cmp ebx, tss._io_map_0 |
556 | cmp ebx, tss._io_map_0 |
557 | jb .fail |
557 | jb .fail |
558 | 558 | ||
559 | cmp ebx, tss._io_map_0+8192 |
559 | cmp ebx, tss._io_map_0+8192 |
560 | jae .fail |
560 | jae .fail |
561 | 561 | ||
562 | ; io permission map |
562 | ; io permission map |
563 | ; copy-on-write protection |
563 | ; copy-on-write protection |
564 | 564 | ||
565 | call alloc_page |
565 | call alloc_page |
566 | and eax, eax |
566 | test eax, eax |
567 | jz .fail |
567 | jz .fail |
568 | 568 | ||
569 | push eax |
569 | push eax |
570 | stdcall map_page,[ebp-4],eax,dword PG_SW |
570 | stdcall map_page,[ebp-4],eax,dword PG_SW |
571 | pop eax |
571 | pop eax |
572 | mov edi, [.err_addr] |
572 | mov edi, [.err_addr] |
573 | and edi, -4096 |
573 | and edi, -4096 |
574 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
574 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
575 | 575 | ||
576 | mov ebx, esi |
576 | mov ebx, esi |
577 | shr ebx, 12 |
577 | shr ebx, 12 |
578 | mov edx, [current_slot] |
578 | mov edx, [current_slot] |
579 | or eax, PG_SW |
579 | or eax, PG_SW |
580 | mov [edx+APPDATA.io_map+ebx*4], eax |
580 | mov [edx+APPDATA.io_map+ebx*4], eax |
581 | 581 | ||
582 | add esi, [default_io_map] |
582 | add esi, [default_io_map] |
583 | mov ecx, 4096/4 |
583 | mov ecx, 4096/4 |
584 | cld |
584 | cld |
585 | rep movsd |
585 | rep movsd |
586 | jmp .exit |
586 | jmp .exit |
587 | 587 | ||
588 | 588 | ||
589 | ;ÃÃ¥ îáðà áà òûâà åì. Îøèáêà |
589 | ;ÃÃ¥ îáðà áà òûâà åì. Îøèáêà |
590 | 590 | ||
591 | .core_tabs: |
591 | .core_tabs: |
592 | .fail: |
592 | .fail: |
593 | mov esp, ebp |
593 | mov esp, ebp |
594 | popad |
594 | popad |
595 | add esp, 4 |
595 | add esp, 4 |
596 | 596 | ||
597 | ; iretd |
597 | ; iretd |
598 | 598 | ||
599 | save_ring3_context ;debugger support |
599 | save_ring3_context ;debugger support |
600 | 600 | ||
601 | mov bl, 14 |
601 | mov bl, 14 |
602 | jmp exc_c |
602 | jmp exc_c |
603 | iretd |
603 | iretd |
604 | endp |
604 | endp |
605 | 605 | ||
606 | align 4 |
606 | align 4 |
607 | proc map_mem stdcall, lin_addr:dword,pdir:dword,\ |
607 | proc map_mem stdcall, lin_addr:dword,pdir:dword,\ |
608 | ofs:dword,buf_size:dword |
608 | ofs:dword,buf_size:dword |
609 | mov eax, [buf_size] |
609 | mov eax, [buf_size] |
610 | test eax, eax |
610 | test eax, eax |
611 | jz .exit |
611 | jz .exit |
612 | 612 | ||
613 | mov eax, [pdir] |
613 | mov eax, [pdir] |
614 | and eax, 0xFFFFF000 |
614 | and eax, 0xFFFFF000 |
615 | 615 | ||
616 | stdcall map_page,[ipc_pdir],eax,PG_UW |
616 | stdcall map_page,[ipc_pdir],eax,PG_UW |
617 | mov ebx, [ofs] |
617 | mov ebx, [ofs] |
618 | shr ebx, 22 |
618 | shr ebx, 22 |
619 | mov esi, [ipc_pdir] |
619 | mov esi, [ipc_pdir] |
620 | mov edi, [ipc_ptab] |
620 | mov edi, [ipc_ptab] |
621 | mov eax, [esi+ebx*4] |
621 | mov eax, [esi+ebx*4] |
622 | and eax, 0xFFFFF000 |
622 | and eax, 0xFFFFF000 |
623 | jz .exit |
623 | jz .exit |
624 | stdcall map_page,edi,eax,PG_UW |
624 | stdcall map_page,edi,eax,PG_UW |
625 | ; inc ebx |
625 | ; inc ebx |
626 | ; add edi, 0x1000 |
626 | ; add edi, 0x1000 |
627 | ; mov eax, [esi+ebx*4] |
627 | ; mov eax, [esi+ebx*4] |
628 | ; test eax, eax |
628 | ; test eax, eax |
629 | ; jz @f |
629 | ; jz @f |
630 | ; and eax, 0xFFFFF000 |
630 | ; and eax, 0xFFFFF000 |
631 | ; stdcall map_page, edi, eax |
631 | ; stdcall map_page, edi, eax |
632 | 632 | ||
633 | @@: mov edi, [lin_addr] |
633 | @@: mov edi, [lin_addr] |
634 | and edi, 0xFFFFF000 |
634 | and edi, 0xFFFFF000 |
635 | mov ecx, [buf_size] |
635 | mov ecx, [buf_size] |
636 | add ecx, 4095 |
636 | add ecx, 4095 |
637 | shr ecx, 12 |
637 | shr ecx, 12 |
638 | inc ecx |
638 | inc ecx |
639 | 639 | ||
640 | mov edx, [ofs] |
640 | mov edx, [ofs] |
641 | shr edx, 12 |
641 | shr edx, 12 |
642 | and edx, 0x3FF |
642 | and edx, 0x3FF |
643 | mov esi, [ipc_ptab] |
643 | mov esi, [ipc_ptab] |
644 | 644 | ||
645 | .map: mov eax, [esi+edx*4] |
645 | .map: mov eax, [esi+edx*4] |
646 | and eax, 0xFFFFF000 |
646 | and eax, 0xFFFFF000 |
647 | jz .exit |
647 | jz .exit |
648 | stdcall map_page,edi,eax,PG_UW |
648 | stdcall map_page,edi,eax,PG_UW |
649 | dec ecx |
649 | dec ecx |
650 | jz .exit |
650 | jz .exit |
651 | add edi, 0x1000 |
651 | add edi, 0x1000 |
652 | inc edx |
652 | inc edx |
653 | cmp edx, 0x400 |
653 | cmp edx, 0x400 |
654 | jnz .map |
654 | jnz .map |
655 | inc ebx |
655 | inc ebx |
656 | mov eax, [ipc_pdir] |
656 | mov eax, [ipc_pdir] |
657 | mov eax, [eax+ebx*4] |
657 | mov eax, [eax+ebx*4] |
658 | and eax, 0xFFFFF000 |
658 | and eax, 0xFFFFF000 |
659 | jz .exit |
659 | jz .exit |
660 | stdcall map_page,esi,eax,PG_UW |
660 | stdcall map_page,esi,eax,PG_UW |
661 | xor edx, edx |
661 | xor edx, edx |
662 | jmp .map |
662 | jmp .map |
663 | 663 | ||
664 | .exit: |
664 | .exit: |
665 | ret |
665 | ret |
666 | endp |
666 | endp |
667 | 667 | ||
668 | align 4 |
668 | align 4 |
669 | proc map_memEx stdcall, lin_addr:dword,pdir:dword,\ |
669 | proc map_memEx stdcall, lin_addr:dword,pdir:dword,\ |
670 | ofs:dword,buf_size:dword |
670 | ofs:dword,buf_size:dword |
671 | mov eax, [buf_size] |
671 | mov eax, [buf_size] |
672 | test eax, eax |
672 | test eax, eax |
673 | jz .exit |
673 | jz .exit |
674 | 674 | ||
675 | mov eax, [pdir] |
675 | mov eax, [pdir] |
676 | and eax, 0xFFFFF000 |
676 | and eax, 0xFFFFF000 |
677 | 677 | ||
678 | stdcall map_page,[proc_mem_pdir],eax,dword PG_UW |
678 | stdcall map_page,[proc_mem_pdir],eax,dword PG_UW |
679 | mov ebx, [ofs] |
679 | mov ebx, [ofs] |
680 | shr ebx, 22 |
680 | shr ebx, 22 |
681 | mov esi, [proc_mem_pdir] |
681 | mov esi, [proc_mem_pdir] |
682 | mov edi, [proc_mem_tab] |
682 | mov edi, [proc_mem_tab] |
683 | mov eax, [esi+ebx*4] |
683 | mov eax, [esi+ebx*4] |
684 | and eax, 0xFFFFF000 |
684 | and eax, 0xFFFFF000 |
685 | test eax, eax |
685 | test eax, eax |
686 | jz .exit |
686 | jz .exit |
687 | stdcall map_page,edi,eax,dword PG_UW |
687 | stdcall map_page,edi,eax,dword PG_UW |
688 | 688 | ||
689 | @@: mov edi, [lin_addr] |
689 | @@: mov edi, [lin_addr] |
690 | and edi, 0xFFFFF000 |
690 | and edi, 0xFFFFF000 |
691 | mov ecx, [buf_size] |
691 | mov ecx, [buf_size] |
692 | add ecx, 4095 |
692 | add ecx, 4095 |
693 | shr ecx, 12 |
693 | shr ecx, 12 |
694 | inc ecx |
694 | inc ecx |
695 | 695 | ||
696 | mov edx, [ofs] |
696 | mov edx, [ofs] |
697 | shr edx, 12 |
697 | shr edx, 12 |
698 | and edx, 0x3FF |
698 | and edx, 0x3FF |
699 | mov esi, [proc_mem_tab] |
699 | mov esi, [proc_mem_tab] |
700 | 700 | ||
701 | .map: mov eax, [esi+edx*4] |
701 | .map: mov eax, [esi+edx*4] |
702 | ; and eax, 0xFFFFF000 |
702 | ; and eax, 0xFFFFF000 |
703 | ; test eax, eax |
703 | ; test eax, eax |
704 | ; jz .exit |
704 | ; jz .exit |
705 | stdcall map_page,edi,eax,dword PG_UW |
705 | stdcall map_page,edi,eax,dword PG_UW |
706 | add edi, 0x1000 |
706 | add edi, 0x1000 |
707 | inc edx |
707 | inc edx |
708 | dec ecx |
708 | dec ecx |
709 | jnz .map |
709 | jnz .map |
710 | .exit: |
710 | .exit: |
711 | ret |
711 | ret |
712 | endp |
712 | endp |
713 | 713 | ||
714 | 714 | ||
715 | 715 | ||
716 | 716 | ||
717 | sys_IPC: |
717 | sys_IPC: |
718 | ;input: |
718 | ;input: |
719 | ; eax=1 - set ipc buffer area |
719 | ; eax=1 - set ipc buffer area |
720 | ; ebx=address of buffer |
720 | ; ebx=address of buffer |
721 | ; ecx=size of buffer |
721 | ; ecx=size of buffer |
722 | ; eax=2 - send message |
722 | ; eax=2 - send message |
723 | ; ebx=PID |
723 | ; ebx=PID |
724 | ; ecx=address of message |
724 | ; ecx=address of message |
725 | ; edx=size of message |
725 | ; edx=size of message |
726 | 726 | ||
727 | cmp eax,1 |
727 | cmp eax,1 |
728 | jne @f |
728 | jne @f |
729 | call set_ipc_buff |
729 | call set_ipc_buff |
730 | mov [esp+36], eax |
730 | mov [esp+36], eax |
731 | ret |
731 | ret |
732 | @@: |
732 | @@: |
733 | cmp eax, 2 |
733 | cmp eax, 2 |
734 | jne @f |
734 | jne @f |
735 | stdcall sys_ipc_send, ebx, ecx, edx |
735 | stdcall sys_ipc_send, ebx, ecx, edx |
736 | mov [esp+36], eax |
736 | mov [esp+36], eax |
737 | ret |
737 | ret |
738 | @@: |
738 | @@: |
739 | xor eax, eax |
739 | xor eax, eax |
740 | not eax |
740 | not eax |
741 | mov [esp+36], eax |
741 | mov [esp+36], eax |
742 | ret |
742 | ret |
743 | 743 | ||
744 | align 4 |
744 | align 4 |
745 | proc set_ipc_buff |
745 | proc set_ipc_buff |
746 | 746 | ||
747 | mov eax,[current_slot] |
747 | mov eax,[current_slot] |
748 | pushf |
748 | pushf |
749 | cli |
749 | cli |
750 | mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
750 | mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
751 | mov [eax+APPDATA.ipc_size],ecx |
751 | mov [eax+APPDATA.ipc_size],ecx |
752 | 752 | ||
753 | add ecx, ebx |
753 | add ecx, ebx |
754 | add ecx, 4095 |
754 | add ecx, 4095 |
755 | and ecx, not 4095 |
755 | and ecx, not 4095 |
756 | 756 | ||
757 | .touch: mov eax, [ebx] |
757 | .touch: mov eax, [ebx] |
758 | add ebx, 0x1000 |
758 | add ebx, 0x1000 |
759 | cmp ebx, ecx |
759 | cmp ebx, ecx |
760 | jb .touch |
760 | jb .touch |
761 | 761 | ||
762 | popf |
762 | popf |
763 | xor eax, eax |
763 | xor eax, eax |
764 | ret |
764 | ret |
765 | endp |
765 | endp |
766 | 766 | ||
767 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
767 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
768 | locals |
768 | locals |
769 | dst_slot dd ? |
769 | dst_slot dd ? |
770 | dst_offset dd ? |
770 | dst_offset dd ? |
771 | buf_size dd ? |
771 | buf_size dd ? |
772 | used_buf dd ? |
772 | used_buf dd ? |
773 | endl |
773 | endl |
774 | 774 | ||
775 | pushf |
775 | pushf |
776 | cli |
776 | cli |
777 | 777 | ||
778 | mov eax, [PID] |
778 | mov eax, [PID] |
779 | call pid_to_slot |
779 | call pid_to_slot |
780 | test eax,eax |
780 | test eax,eax |
781 | jz .no_pid |
781 | jz .no_pid |
782 | 782 | ||
783 | mov [dst_slot], eax |
783 | mov [dst_slot], eax |
784 | shl eax,8 |
784 | shl eax,8 |
785 | mov edi,[eax+SLOT_BASE+0xa0] ;is ipc area defined? |
785 | mov edi,[eax+SLOT_BASE+0xa0] ;is ipc area defined? |
786 | test edi,edi |
786 | test edi,edi |
787 | jz .no_ipc_area |
787 | jz .no_ipc_area |
788 | 788 | ||
789 | mov ebx, edi |
789 | mov ebx, edi |
790 | ; add edi, new_app_base |
- | |
791 | and ebx, 0xFFF |
790 | and ebx, 0xFFF |
792 | mov [dst_offset], ebx |
791 | mov [dst_offset], ebx |
793 | 792 | ||
794 | mov esi, [eax+SLOT_BASE+0xa4] |
793 | mov esi, [eax+SLOT_BASE+0xa4] |
795 | mov [buf_size], esi |
794 | mov [buf_size], esi |
796 | 795 | ||
797 | mov ecx, [ipc_tmp] |
796 | mov ecx, [ipc_tmp] |
798 | cmp esi, 0x40000-0x1000 ; size of [ipc_tmp] minus one page |
797 | cmp esi, 0x40000-0x1000 ; size of [ipc_tmp] minus one page |
799 | jbe @f |
798 | jbe @f |
800 | push eax esi edi |
799 | push eax esi edi |
801 | add esi,0x1000 |
800 | add esi,0x1000 |
802 | stdcall alloc_kernel_space,esi |
801 | stdcall alloc_kernel_space,esi |
803 | mov ecx, eax |
802 | mov ecx, eax |
804 | pop edi esi eax |
803 | pop edi esi eax |
805 | @@: |
804 | @@: |
806 | mov [used_buf], ecx |
805 | mov [used_buf], ecx |
807 | stdcall map_mem, ecx, [SLOT_BASE+eax+0xB8],\ |
806 | stdcall map_mem, ecx, [SLOT_BASE+eax+0xB8],\ |
808 | edi, esi |
807 | edi, esi |
809 | 808 | ||
810 | mov edi, [dst_offset] |
809 | mov edi, [dst_offset] |
811 | add edi, [used_buf] |
810 | add edi, [used_buf] |
812 | cmp dword [edi], 0 |
811 | cmp dword [edi], 0 |
813 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
812 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
814 | 813 | ||
815 | mov ebx, dword [edi+4] |
814 | mov edx, dword [edi+4] |
816 | mov edx, ebx |
- | |
817 | add ebx, 8 |
815 | lea ebx, [edx+8] |
818 | add ebx, [msg_size] |
816 | add ebx, [msg_size] |
819 | cmp ebx, [buf_size] |
817 | cmp ebx, [buf_size] |
820 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
818 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
821 | 819 | ||
822 | mov dword [edi+4], ebx |
820 | mov dword [edi+4], ebx |
823 | mov eax,[TASK_BASE] |
821 | mov eax,[TASK_BASE] |
824 | mov eax, [eax+0x04] ;eax - our PID |
822 | mov eax, [eax+0x04] ;eax - our PID |
825 | add edi, edx |
823 | add edi, edx |
826 | mov [edi], eax |
824 | mov [edi], eax |
827 | mov ecx, [msg_size] |
825 | mov ecx, [msg_size] |
828 | 826 | ||
829 | mov [edi+4], ecx |
827 | mov [edi+4], ecx |
830 | add edi, 8 |
828 | add edi, 8 |
831 | mov esi, [msg_addr] |
829 | mov esi, [msg_addr] |
832 | ; add esi, new_app_base |
830 | ; add esi, new_app_base |
833 | cld |
831 | cld |
834 | rep movsb |
832 | rep movsb |
835 | 833 | ||
836 | mov ebx, [ipc_tmp] |
834 | mov ebx, [ipc_tmp] |
837 | mov edx, ebx |
835 | mov edx, ebx |
838 | shr ebx, 12 |
836 | shr ebx, 12 |
839 | xor eax, eax |
837 | xor eax, eax |
840 | mov [page_tabs+ebx*4], eax |
838 | mov [page_tabs+ebx*4], eax |
841 | invlpg [edx] |
839 | invlpg [edx] |
842 | 840 | ||
843 | mov ebx, [ipc_pdir] |
841 | mov ebx, [ipc_pdir] |
844 | mov edx, ebx |
842 | mov edx, ebx |
845 | shr ebx, 12 |
843 | shr ebx, 12 |
846 | xor eax, eax |
844 | xor eax, eax |
847 | mov [page_tabs+ebx*4], eax |
845 | mov [page_tabs+ebx*4], eax |
848 | invlpg [edx] |
846 | invlpg [edx] |
849 | 847 | ||
850 | mov ebx, [ipc_ptab] |
848 | mov ebx, [ipc_ptab] |
851 | mov edx, ebx |
849 | mov edx, ebx |
852 | shr ebx, 12 |
850 | shr ebx, 12 |
853 | xor eax, eax |
851 | xor eax, eax |
854 | mov [page_tabs+ebx*4], eax |
852 | mov [page_tabs+ebx*4], eax |
855 | invlpg [edx] |
853 | invlpg [edx] |
856 | 854 | ||
857 | mov eax, [dst_slot] |
855 | mov eax, [dst_slot] |
858 | shl eax, 8 |
856 | shl eax, 8 |
859 | or [eax+SLOT_BASE+0xA8],dword 0x40 |
857 | or [eax+SLOT_BASE+0xA8],dword 0x40 |
860 | cmp dword [check_idle_semaphore],20 |
858 | cmp dword [check_idle_semaphore],20 |
861 | jge .ipc_no_cis |
859 | jge .ipc_no_cis |
862 | 860 | ||
863 | mov dword [check_idle_semaphore],5 |
861 | mov dword [check_idle_semaphore],5 |
864 | .ipc_no_cis: |
862 | .ipc_no_cis: |
865 | push 0 |
863 | push 0 |
866 | jmp .ret |
864 | jmp .ret |
867 | .no_pid: |
865 | .no_pid: |
868 | popf |
866 | popf |
869 | mov eax, 4 |
867 | mov eax, 4 |
870 | ret |
868 | ret |
871 | .no_ipc_area: |
869 | .no_ipc_area: |
872 | popf |
870 | popf |
873 | xor eax, eax |
871 | xor eax, eax |
874 | inc eax |
872 | inc eax |
875 | ret |
873 | ret |
876 | .ipc_blocked: |
874 | .ipc_blocked: |
877 | push 2 |
875 | push 2 |
878 | jmp .ret |
876 | jmp .ret |
879 | .buffer_overflow: |
877 | .buffer_overflow: |
880 | push 3 |
878 | push 3 |
881 | .ret: |
879 | .ret: |
882 | mov eax, [used_buf] |
880 | mov eax, [used_buf] |
883 | cmp eax, [ipc_tmp] |
881 | cmp eax, [ipc_tmp] |
884 | jz @f |
882 | jz @f |
885 | stdcall free_kernel_space,eax |
883 | stdcall free_kernel_space,eax |
886 | @@: |
884 | @@: |
887 | pop eax |
885 | pop eax |
888 | popf |
886 | popf |
889 | ret |
887 | ret |
890 | endp |
888 | endp |
891 | 889 | ||
892 | align 4 |
890 | align 4 |
893 | sysfn_meminfo: |
891 | sysfn_meminfo: |
894 | 892 | ||
895 | ; add ebx, new_app_base |
893 | ; add ebx, new_app_base |
896 | cmp ebx, OS_BASE |
894 | cmp ebx, OS_BASE |
897 | jae .fail |
895 | jae .fail |
898 | 896 | ||
899 | mov eax, [pg_data.pages_count] |
897 | mov eax, [pg_data.pages_count] |
900 | mov [ebx], eax |
898 | mov [ebx], eax |
901 | shl eax, 12 |
899 | shl eax, 12 |
902 | mov [esp+36], eax |
900 | mov [esp+36], eax |
903 | mov ecx, [pg_data.pages_free] |
901 | mov ecx, [pg_data.pages_free] |
904 | mov [ebx+4], ecx |
902 | mov [ebx+4], ecx |
905 | mov edx, [pg_data.pages_faults] |
903 | mov edx, [pg_data.pages_faults] |
906 | mov [ebx+8], edx |
904 | mov [ebx+8], edx |
907 | mov esi, [heap_size] |
905 | mov esi, [heap_size] |
908 | mov [ebx+12], esi |
906 | mov [ebx+12], esi |
909 | mov edi, [heap_free] |
907 | mov edi, [heap_free] |
910 | mov [ebx+16], edi |
908 | mov [ebx+16], edi |
911 | mov eax, [heap_blocks] |
909 | mov eax, [heap_blocks] |
912 | mov [ebx+20], eax |
910 | mov [ebx+20], eax |
913 | mov ecx, [free_blocks] |
911 | mov ecx, [free_blocks] |
914 | mov [ebx+24], ecx |
912 | mov [ebx+24], ecx |
915 | ret |
913 | ret |
916 | .fail: |
914 | .fail: |
917 | mov dword [esp+36], -1 |
915 | mov dword [esp+36], -1 |
918 | ret |
916 | ret |
919 | 917 | ||
920 | align 4 |
918 | align 4 |
921 | new_services: |
919 | new_services: |
922 | 920 | ||
923 | cmp eax,4 |
921 | cmp eax,4 |
924 | jle sys_sheduler |
922 | jle sys_sheduler |
925 | 923 | ||
926 | cmp eax, 11 |
924 | cmp eax, 11 |
927 | jb .fail |
925 | jb .fail |
928 | ja @f |
926 | ja @f |
929 | 927 | ||
930 | call init_heap |
928 | call init_heap |
931 | mov [esp+36], eax |
929 | mov [esp+36], eax |
932 | ret |
930 | ret |
933 | @@: |
931 | @@: |
934 | cmp eax, 12 |
932 | cmp eax, 12 |
935 | ja @f |
933 | ja @f |
936 | 934 | ||
937 | stdcall user_alloc, ebx |
935 | stdcall user_alloc, ebx |
938 | mov [esp+36], eax |
936 | mov [esp+36], eax |
939 | ret |
937 | ret |
940 | @@: |
938 | @@: |
941 | cmp eax, 13 |
939 | cmp eax, 13 |
942 | ja @f |
940 | ja @f |
943 | stdcall user_free, ebx |
941 | stdcall user_free, ebx |
944 | mov [esp+36], eax |
942 | mov [esp+36], eax |
945 | ret |
943 | ret |
946 | @@: |
944 | @@: |
947 | cmp eax, 14 |
945 | cmp eax, 14 |
948 | ja @f |
946 | ja @f |
949 | cmp ebx, OS_BASE |
947 | cmp ebx, OS_BASE |
950 | jae .fail |
948 | jae .fail |
951 | stdcall get_event_ex, ebx, ecx |
949 | stdcall get_event_ex, ebx, ecx |
952 | mov [esp+36], eax |
950 | mov [esp+36], eax |
953 | ret |
951 | ret |
954 | @@: |
952 | @@: |
955 | cmp eax, 15 |
953 | cmp eax, 15 |
956 | ja @f |
954 | ja @f |
957 | mov ecx, [current_slot] |
955 | mov ecx, [current_slot] |
958 | mov eax, [ecx+APPDATA.fpu_handler] |
956 | mov eax, [ecx+APPDATA.fpu_handler] |
959 | mov [ecx+APPDATA.fpu_handler], ebx |
957 | mov [ecx+APPDATA.fpu_handler], ebx |
960 | mov [esp+36], eax |
958 | mov [esp+36], eax |
961 | ret |
959 | ret |
962 | @@: |
960 | @@: |
963 | cmp eax, 16 |
961 | cmp eax, 16 |
964 | ja @f |
962 | ja @f |
965 | 963 | ||
966 | test ebx, ebx |
964 | test ebx, ebx |
967 | jz .fail |
965 | jz .fail |
968 | cmp ebx, OS_BASE |
966 | cmp ebx, OS_BASE |
969 | jae .fail |
967 | jae .fail |
970 | stdcall get_service, ebx |
968 | stdcall get_service, ebx |
971 | mov [esp+36], eax |
969 | mov [esp+36], eax |
972 | ret |
970 | ret |
973 | @@: |
971 | @@: |
974 | cmp eax, 17 |
972 | cmp eax, 17 |
975 | ja @f |
973 | ja @f |
976 | call srv_handlerEx ;ebx |
974 | call srv_handlerEx ;ebx |
977 | mov [esp+36], eax |
975 | mov [esp+36], eax |
978 | ret |
976 | ret |
979 | @@: |
977 | @@: |
980 | cmp eax, 18 |
978 | cmp eax, 18 |
981 | ja @f |
979 | ja @f |
982 | mov ecx, [current_slot] |
980 | mov ecx, [current_slot] |
983 | mov eax, [ecx+APPDATA.sse_handler] |
981 | mov eax, [ecx+APPDATA.sse_handler] |
984 | mov [ecx+APPDATA.sse_handler], ebx |
982 | mov [ecx+APPDATA.sse_handler], ebx |
985 | mov [esp+36], eax |
983 | mov [esp+36], eax |
986 | ret |
984 | ret |
987 | @@: |
985 | @@: |
988 | cmp eax, 19 |
986 | cmp eax, 19 |
989 | ja @f |
987 | ja @f |
990 | cmp ebx, OS_BASE |
988 | cmp ebx, OS_BASE |
991 | jae .fail |
989 | jae .fail |
992 | stdcall load_library, ebx |
990 | stdcall load_library, ebx |
993 | mov [esp+36], eax |
991 | mov [esp+36], eax |
994 | ret |
992 | ret |
995 | @@: |
993 | @@: |
996 | cmp eax, 20 |
994 | cmp eax, 20 |
997 | ja .fail |
995 | ja .fail |
998 | mov eax, ecx |
996 | mov eax, ecx |
999 | call user_realloc |
997 | call user_realloc |
1000 | mov [esp+36], eax |
998 | mov [esp+36], eax |
1001 | ret |
999 | ret |
1002 | .fail: |
1000 | .fail: |
1003 | xor eax, eax |
1001 | xor eax, eax |
1004 | mov [esp+36], eax |
1002 | mov [esp+36], eax |
1005 | ret |
1003 | ret |
1006 | 1004 | ||
1007 | align 4 |
1005 | align 4 |
1008 | proc init_mtrr |
1006 | proc init_mtrr |
1009 | 1007 | ||
1010 | cmp [BOOT_VAR+0x901c],byte 2 |
1008 | cmp [BOOT_VAR+0x901c],byte 2 |
1011 | je .exit |
1009 | je .exit |
1012 | 1010 | ||
1013 | bt [cpu_caps], CAPS_MTRR |
1011 | bt [cpu_caps], CAPS_MTRR |
1014 | jnc .exit |
1012 | jnc .exit |
1015 | 1013 | ||
1016 | mov eax, cr0 |
1014 | mov eax, cr0 |
1017 | or eax, 0x60000000 ;disable caching |
1015 | or eax, 0x60000000 ;disable caching |
1018 | mov cr0, eax |
1016 | mov cr0, eax |
1019 | wbinvd ;invalidate cache |
1017 | wbinvd ;invalidate cache |
1020 | 1018 | ||
1021 | mov ecx, 0x2FF |
1019 | mov ecx, 0x2FF |
1022 | rdmsr ; |
1020 | rdmsr ; |
1023 | push eax |
1021 | push eax |
1024 | 1022 | ||
1025 | xor edx, edx |
1023 | xor edx, edx |
1026 | xor eax, eax |
1024 | xor eax, eax |
1027 | mov ecx, 0x2FF |
1025 | mov ecx, 0x2FF |
1028 | wrmsr ;disable all MTRR |
1026 | wrmsr ;disable all MTRR |
1029 | 1027 | ||
1030 | stdcall set_mtrr, dword 0,dword 0,[MEM_AMOUNT],MEM_WB |
1028 | stdcall set_mtrr, dword 0,dword 0,[MEM_AMOUNT],MEM_WB |
1031 | stdcall set_mtrr, dword 1,[LFBAddress],[LFBSize],MEM_WC |
1029 | stdcall set_mtrr, dword 1,[LFBAddress],[LFBSize],MEM_WC |
1032 | xor edx, edx |
1030 | xor edx, edx |
1033 | xor eax, eax |
1031 | xor eax, eax |
1034 | mov ecx, 0x204 |
1032 | mov ecx, 0x204 |
1035 | mov ebx, 6 |
1033 | mov ebx, 6 |
1036 | @@: |
1034 | @@: |
1037 | wrmsr ;disable unused MTRR |
1035 | wrmsr ;disable unused MTRR |
1038 | inc ecx |
1036 | inc ecx |
1039 | wrmsr |
1037 | wrmsr |
1040 | inc ecx |
1038 | inc ecx |
1041 | dec ebx |
1039 | dec ebx |
1042 | jnz @b |
1040 | jnz @b |
1043 | 1041 | ||
1044 | wbinvd ;again invalidate |
1042 | wbinvd ;again invalidate |
1045 | 1043 | ||
1046 | pop eax |
1044 | pop eax |
1047 | or eax, 0x800 ;set default memtype to UC |
1045 | or eax, 0x800 ;set default memtype to UC |
1048 | and al, 0xF0 |
1046 | and al, 0xF0 |
1049 | mov ecx, 0x2FF |
1047 | mov ecx, 0x2FF |
1050 | wrmsr ;and enable MTRR |
1048 | wrmsr ;and enable MTRR |
1051 | 1049 | ||
1052 | mov eax, cr0 |
1050 | mov eax, cr0 |
1053 | and eax, not 0x60000000 |
1051 | and eax, not 0x60000000 |
1054 | mov cr0, eax ; enable caching |
1052 | mov cr0, eax ; enable caching |
1055 | .exit: |
1053 | .exit: |
1056 | ret |
1054 | ret |
1057 | endp |
1055 | endp |
1058 | 1056 | ||
1059 | align 4 |
1057 | align 4 |
1060 | proc set_mtrr stdcall, reg:dword,base:dword,size:dword,mem_type:dword |
1058 | proc set_mtrr stdcall, reg:dword,base:dword,size:dword,mem_type:dword |
1061 | 1059 | ||
1062 | xor edx, edx |
1060 | xor edx, edx |
1063 | mov eax, [base] |
1061 | mov eax, [base] |
1064 | or eax, [mem_type] |
1062 | or eax, [mem_type] |
1065 | mov ecx, [reg] |
1063 | mov ecx, [reg] |
1066 | lea ecx, [0x200+ecx*2] |
1064 | lea ecx, [0x200+ecx*2] |
1067 | wrmsr |
1065 | wrmsr |
1068 | 1066 | ||
1069 | mov ebx, [size] |
1067 | mov ebx, [size] |
1070 | dec ebx |
1068 | dec ebx |
1071 | mov eax, 0xFFFFFFFF |
1069 | mov eax, 0xFFFFFFFF |
1072 | mov edx, 0x0000000F |
1070 | mov edx, 0x0000000F |
1073 | sub eax, ebx |
1071 | sub eax, ebx |
1074 | sbb edx, 0 |
1072 | sbb edx, 0 |
1075 | or eax, 0x800 |
1073 | or eax, 0x800 |
1076 | inc ecx |
1074 | inc ecx |
1077 | wrmsr |
1075 | wrmsr |
1078 | ret |
1076 | ret |
1079 | endp |
1077 | endp |
1080 | 1078 | ||
1081 | 1079 | ||
1082 | 1080 | ||
1083 | align 4 |
1081 | align 4 |
1084 | proc stall stdcall, delay:dword |
1082 | proc stall stdcall, delay:dword |
1085 | push ecx |
1083 | push ecx |
1086 | push edx |
1084 | push edx |
1087 | push ebx |
1085 | push ebx |
1088 | push eax |
1086 | push eax |
1089 | 1087 | ||
1090 | mov eax, [delay] |
1088 | mov eax, [delay] |
1091 | mul [stall_mcs] |
1089 | mul [stall_mcs] |
1092 | mov ebx, eax ;low |
1090 | mov ebx, eax ;low |
1093 | mov ecx, edx ;high |
1091 | mov ecx, edx ;high |
1094 | rdtsc |
1092 | rdtsc |
1095 | add ebx, eax |
1093 | add ebx, eax |
1096 | adc ecx,edx |
1094 | adc ecx,edx |
1097 | @@: |
1095 | @@: |
1098 | rdtsc |
1096 | rdtsc |
1099 | sub eax, ebx |
1097 | sub eax, ebx |
1100 | sbb edx, ecx |
1098 | sbb edx, ecx |
1101 | jb @B |
1099 | jb @B |
1102 | 1100 | ||
1103 | pop eax |
1101 | pop eax |
1104 | pop ebx |
1102 | pop ebx |
1105 | pop edx |
1103 | pop edx |
1106 | pop ecx |
1104 | pop ecx |
1107 | ret |
1105 | ret |
1108 | endp |
1106 | endp |
1109 | 1107 | ||
1110 | align 4 |
1108 | align 4 |
1111 | proc create_ring_buffer stdcall, size:dword, flags:dword |
1109 | proc create_ring_buffer stdcall, size:dword, flags:dword |
1112 | locals |
1110 | locals |
1113 | buf_ptr dd ? |
1111 | buf_ptr dd ? |
1114 | endl |
1112 | endl |
1115 | 1113 | ||
1116 | mov eax, [size] |
1114 | mov eax, [size] |
1117 | test eax, eax |
1115 | test eax, eax |
1118 | jz .fail |
1116 | jz .fail |
1119 | 1117 | ||
1120 | add eax, eax |
1118 | add eax, eax |
1121 | stdcall alloc_kernel_space, eax |
1119 | stdcall alloc_kernel_space, eax |
1122 | test eax, eax |
1120 | test eax, eax |
1123 | jz .fail |
1121 | jz .fail |
1124 | 1122 | ||
1125 | mov [buf_ptr], eax |
1123 | mov [buf_ptr], eax |
1126 | 1124 | ||
1127 | mov ebx, [size] |
1125 | mov ebx, [size] |
1128 | shr ebx, 12 |
1126 | shr ebx, 12 |
1129 | push ebx |
1127 | push ebx |
1130 | 1128 | ||
1131 | stdcall alloc_pages, ebx |
1129 | stdcall alloc_pages, ebx |
1132 | pop ecx |
1130 | pop ecx |
1133 | 1131 | ||
1134 | test eax, eax |
1132 | test eax, eax |
1135 | jz .mm_fail |
1133 | jz .mm_fail |
1136 | 1134 | ||
1137 | or eax, [flags] |
1135 | or eax, [flags] |
1138 | mov edi, [buf_ptr] |
1136 | mov edi, [buf_ptr] |
1139 | mov ebx, [buf_ptr] |
1137 | mov ebx, [buf_ptr] |
1140 | mov edx, ecx |
1138 | mov edx, ecx |
1141 | shl edx, 2 |
1139 | shl edx, 2 |
1142 | shr edi, 10 |
1140 | shr edi, 10 |
1143 | @@: |
1141 | @@: |
1144 | mov [page_tabs+edi], eax |
1142 | mov [page_tabs+edi], eax |
1145 | mov [page_tabs+edi+edx], eax |
1143 | mov [page_tabs+edi+edx], eax |
1146 | invlpg [ebx] |
1144 | invlpg [ebx] |
1147 | invlpg [ebx+esi] |
1145 | invlpg [ebx+esi] |
1148 | add eax, 0x1000 |
1146 | add eax, 0x1000 |
1149 | add ebx, 0x1000 |
1147 | add ebx, 0x1000 |
1150 | add edi, 4 |
1148 | add edi, 4 |
1151 | dec ecx |
1149 | dec ecx |
1152 | jnz @B |
1150 | jnz @B |
1153 | 1151 | ||
1154 | mov eax, [buf_ptr] |
1152 | mov eax, [buf_ptr] |
1155 | ret |
1153 | ret |
1156 | .mm_fail: |
1154 | .mm_fail: |
1157 | stdcall free_kernel_space, [buf_ptr] |
1155 | stdcall free_kernel_space, [buf_ptr] |
1158 | xor eax, eax |
1156 | xor eax, eax |
1159 | .fail: |
1157 | .fail: |
1160 | ret |
1158 | ret |
1161 | endp |
1159 | endp |
1162 | 1160 | ||
1163 | if 0 |
1161 | if 0 |
1164 | push eax |
1162 | push eax |
1165 | push edx |
1163 | push edx |
1166 | mov edx, 0x400 ;bochs |
1164 | mov edx, 0x400 ;bochs |
1167 | mov al,0xff ;bochs |
1165 | mov al,0xff ;bochs |
1168 | out dx, al ;bochs |
1166 | out dx, al ;bochs |
1169 | pop edx |
1167 | pop edx |
1170 | pop eax |
1168 | pop eax |
1171 | end if0>> |
1169 | end if0>> |