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Rev 2467 | Rev 2987 | ||
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1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
2 | ;; ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
5 | ;; ;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
7 | 7 | ||
8 | $Revision: 2467 $ |
8 | $Revision: 2987 $ |
9 | 9 | ||
10 | 10 | ||
11 | align 4 |
11 | align 4 |
12 | proc alloc_page |
12 | proc alloc_page |
13 | 13 | ||
14 | pushfd |
14 | pushfd |
15 | cli |
15 | cli |
16 | push ebx |
16 | push ebx |
17 | ;//- |
17 | ;//- |
18 | cmp [pg_data.pages_free], 1 |
18 | cmp [pg_data.pages_free], 1 |
19 | jle .out_of_memory |
19 | jle .out_of_memory |
20 | ;//- |
20 | ;//- |
21 | 21 | ||
22 | mov ebx, [page_start] |
22 | mov ebx, [page_start] |
23 | mov ecx, [page_end] |
23 | mov ecx, [page_end] |
24 | .l1: |
24 | .l1: |
25 | bsf eax, [ebx]; |
25 | bsf eax, [ebx]; |
26 | jnz .found |
26 | jnz .found |
27 | add ebx, 4 |
27 | add ebx, 4 |
28 | cmp ebx, ecx |
28 | cmp ebx, ecx |
29 | jb .l1 |
29 | jb .l1 |
30 | pop ebx |
30 | pop ebx |
31 | popfd |
31 | popfd |
32 | xor eax, eax |
32 | xor eax, eax |
33 | ret |
33 | ret |
34 | .found: |
34 | .found: |
35 | ;//- |
35 | ;//- |
36 | dec [pg_data.pages_free] |
36 | dec [pg_data.pages_free] |
37 | jz .out_of_memory |
37 | jz .out_of_memory |
38 | ;//- |
38 | ;//- |
39 | btr [ebx], eax |
39 | btr [ebx], eax |
40 | mov [page_start], ebx |
40 | mov [page_start], ebx |
41 | sub ebx, sys_pgmap |
41 | sub ebx, sys_pgmap |
42 | lea eax, [eax+ebx*8] |
42 | lea eax, [eax+ebx*8] |
43 | shl eax, 12 |
43 | shl eax, 12 |
44 | ;//- dec [pg_data.pages_free] |
44 | ;//- dec [pg_data.pages_free] |
45 | pop ebx |
45 | pop ebx |
46 | popfd |
46 | popfd |
47 | ret |
47 | ret |
48 | ;//- |
48 | ;//- |
49 | .out_of_memory: |
49 | .out_of_memory: |
50 | mov [pg_data.pages_free], 1 |
50 | mov [pg_data.pages_free], 1 |
51 | xor eax, eax |
51 | xor eax, eax |
52 | pop ebx |
52 | pop ebx |
53 | popfd |
53 | popfd |
54 | ret |
54 | ret |
55 | ;//- |
55 | ;//- |
56 | endp |
56 | endp |
57 | 57 | ||
58 | align 4 |
58 | align 4 |
59 | proc alloc_pages stdcall, count:dword |
59 | proc alloc_pages stdcall, count:dword |
60 | pushfd |
60 | pushfd |
61 | push ebx |
61 | push ebx |
62 | push edi |
62 | push edi |
63 | cli |
63 | cli |
64 | mov eax, [count] |
64 | mov eax, [count] |
65 | add eax, 7 |
65 | add eax, 7 |
66 | shr eax, 3 |
66 | shr eax, 3 |
67 | mov [count], eax |
67 | mov [count], eax |
68 | ;//- |
68 | ;//- |
69 | mov ebx, [pg_data.pages_free] |
69 | mov ebx, [pg_data.pages_free] |
70 | sub ebx, 9 |
70 | sub ebx, 9 |
71 | js .out_of_memory |
71 | js .out_of_memory |
72 | shr ebx, 3 |
72 | shr ebx, 3 |
73 | cmp eax, ebx |
73 | cmp eax, ebx |
74 | jg .out_of_memory |
74 | jg .out_of_memory |
75 | ;//- |
75 | ;//- |
76 | mov ecx, [page_start] |
76 | mov ecx, [page_start] |
77 | mov ebx, [page_end] |
77 | mov ebx, [page_end] |
78 | .find: |
78 | .find: |
79 | mov edx, [count] |
79 | mov edx, [count] |
80 | mov edi, ecx |
80 | mov edi, ecx |
81 | .match: |
81 | .match: |
82 | cmp byte [ecx], 0xFF |
82 | cmp byte [ecx], 0xFF |
83 | jne .next |
83 | jne .next |
84 | dec edx |
84 | dec edx |
85 | jz .ok |
85 | jz .ok |
86 | inc ecx |
86 | inc ecx |
87 | cmp ecx, ebx |
87 | cmp ecx, ebx |
88 | jb .match |
88 | jb .match |
89 | .out_of_memory: |
89 | .out_of_memory: |
90 | .fail: |
90 | .fail: |
91 | xor eax, eax |
91 | xor eax, eax |
92 | pop edi |
92 | pop edi |
93 | pop ebx |
93 | pop ebx |
94 | popfd |
94 | popfd |
95 | ret |
95 | ret |
96 | .next: |
96 | .next: |
97 | inc ecx |
97 | inc ecx |
98 | cmp ecx, ebx |
98 | cmp ecx, ebx |
99 | jb .find |
99 | jb .find |
100 | pop edi |
100 | pop edi |
101 | pop ebx |
101 | pop ebx |
102 | popfd |
102 | popfd |
103 | xor eax, eax |
103 | xor eax, eax |
104 | ret |
104 | ret |
105 | .ok: |
105 | .ok: |
106 | sub ecx, edi |
106 | sub ecx, edi |
107 | inc ecx |
107 | inc ecx |
108 | push esi |
108 | push esi |
109 | mov esi, edi |
109 | mov esi, edi |
110 | xor eax, eax |
110 | xor eax, eax |
111 | rep stosb |
111 | rep stosb |
112 | sub esi, sys_pgmap |
112 | sub esi, sys_pgmap |
113 | shl esi, 3+12 |
113 | shl esi, 3+12 |
114 | mov eax, esi |
114 | mov eax, esi |
115 | mov ebx, [count] |
115 | mov ebx, [count] |
116 | shl ebx, 3 |
116 | shl ebx, 3 |
117 | sub [pg_data.pages_free], ebx |
117 | sub [pg_data.pages_free], ebx |
118 | pop esi |
118 | pop esi |
119 | pop edi |
119 | pop edi |
120 | pop ebx |
120 | pop ebx |
121 | popfd |
121 | popfd |
122 | ret |
122 | ret |
123 | endp |
123 | endp |
124 | 124 | ||
125 | align 4 |
125 | align 4 |
126 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
126 | proc map_page stdcall,lin_addr:dword,phis_addr:dword,flags:dword |
127 | push ebx |
127 | push ebx |
128 | mov eax, [phis_addr] |
128 | mov eax, [phis_addr] |
129 | and eax, not 0xFFF |
129 | and eax, not 0xFFF |
130 | or eax, [flags] |
130 | or eax, [flags] |
131 | mov ebx, [lin_addr] |
131 | mov ebx, [lin_addr] |
132 | shr ebx, 12 |
132 | shr ebx, 12 |
133 | mov [page_tabs+ebx*4], eax |
133 | mov [page_tabs+ebx*4], eax |
134 | mov eax, [lin_addr] |
134 | mov eax, [lin_addr] |
135 | invlpg [eax] |
135 | invlpg [eax] |
136 | pop ebx |
136 | pop ebx |
137 | ret |
137 | ret |
138 | endp |
138 | endp |
139 | 139 | ||
140 | align 4 |
140 | align 4 |
141 | map_space: ;not implemented |
141 | map_space: ;not implemented |
142 | 142 | ||
143 | 143 | ||
144 | ret |
144 | ret |
145 | 145 | ||
146 | 146 | ||
147 | align 4 |
147 | align 4 |
148 | proc free_page |
148 | proc free_page |
149 | ;arg: eax page address |
149 | ;arg: eax page address |
150 | pushfd |
150 | pushfd |
151 | cli |
151 | cli |
152 | shr eax, 12 ;page index |
152 | shr eax, 12 ;page index |
153 | bts dword [sys_pgmap], eax ;that's all! |
153 | bts dword [sys_pgmap], eax ;that's all! |
154 | cmc |
154 | cmc |
155 | adc [pg_data.pages_free], 0 |
155 | adc [pg_data.pages_free], 0 |
156 | shr eax, 3 |
156 | shr eax, 3 |
157 | and eax, not 3 ;dword offset from page_map |
157 | and eax, not 3 ;dword offset from page_map |
158 | add eax, sys_pgmap |
158 | add eax, sys_pgmap |
159 | cmp [page_start], eax |
159 | cmp [page_start], eax |
160 | ja @f |
160 | ja @f |
161 | popfd |
161 | popfd |
162 | ret |
162 | ret |
163 | @@: |
163 | @@: |
164 | mov [page_start], eax |
164 | mov [page_start], eax |
165 | popfd |
165 | popfd |
166 | ret |
166 | ret |
167 | endp |
167 | endp |
168 | 168 | ||
169 | align 4 |
169 | align 4 |
170 | proc map_io_mem stdcall, base:dword, size:dword, flags:dword |
170 | proc map_io_mem stdcall, base:dword, size:dword, flags:dword |
171 | 171 | ||
172 | push ebx |
172 | push ebx |
173 | push edi |
173 | push edi |
174 | mov eax, [size] |
174 | mov eax, [size] |
175 | add eax, [base] |
175 | add eax, [base] |
176 | add eax, 4095 |
176 | add eax, 4095 |
177 | and eax, -4096 |
177 | and eax, -4096 |
178 | mov ecx, [base] |
178 | mov ecx, [base] |
179 | and ecx, -4096 |
179 | and ecx, -4096 |
180 | sub eax, ecx |
180 | sub eax, ecx |
181 | mov [size], eax |
181 | mov [size], eax |
182 | 182 | ||
183 | stdcall alloc_kernel_space, eax |
183 | stdcall alloc_kernel_space, eax |
184 | test eax, eax |
184 | test eax, eax |
185 | jz .fail |
185 | jz .fail |
186 | push eax |
186 | push eax |
187 | 187 | ||
188 | mov edi, 0x1000 |
188 | mov edi, 0x1000 |
189 | mov ebx, eax |
189 | mov ebx, eax |
190 | mov ecx, [size] |
190 | mov ecx, [size] |
191 | mov edx, [base] |
191 | mov edx, [base] |
192 | shr eax, 12 |
192 | shr eax, 12 |
193 | shr ecx, 12 |
193 | shr ecx, 12 |
194 | and edx, -4096 |
194 | and edx, -4096 |
195 | or edx, [flags] |
195 | or edx, [flags] |
196 | @@: |
196 | @@: |
197 | mov [page_tabs+eax*4], edx |
197 | mov [page_tabs+eax*4], edx |
198 | invlpg [ebx] |
198 | invlpg [ebx] |
199 | inc eax |
199 | inc eax |
200 | add ebx, edi |
200 | add ebx, edi |
201 | add edx, edi |
201 | add edx, edi |
202 | loop @B |
202 | loop @B |
203 | 203 | ||
204 | pop eax |
204 | pop eax |
205 | mov edx, [base] |
205 | mov edx, [base] |
206 | and edx, 4095 |
206 | and edx, 4095 |
207 | add eax, edx |
207 | add eax, edx |
208 | .fail: |
208 | .fail: |
209 | pop edi |
209 | pop edi |
210 | pop ebx |
210 | pop ebx |
211 | ret |
211 | ret |
212 | endp |
212 | endp |
213 | 213 | ||
214 | ; param |
214 | ; param |
215 | ; eax= page base + page flags |
215 | ; eax= page base + page flags |
216 | ; ebx= linear address |
216 | ; ebx= linear address |
217 | ; ecx= count |
217 | ; ecx= count |
218 | 218 | ||
219 | align 4 |
219 | align 4 |
220 | commit_pages: |
220 | commit_pages: |
221 | test ecx, ecx |
221 | test ecx, ecx |
222 | jz .fail |
222 | jz .fail |
223 | 223 | ||
224 | push edi |
224 | push edi |
225 | push eax |
225 | push eax |
226 | push ecx |
226 | push ecx |
227 | mov ecx, pg_data.mutex |
227 | mov ecx, pg_data.mutex |
228 | call mutex_lock |
228 | call mutex_lock |
229 | pop ecx |
229 | pop ecx |
230 | pop eax |
230 | pop eax |
231 | 231 | ||
232 | mov edi, ebx |
232 | mov edi, ebx |
233 | shr edi, 12 |
233 | shr edi, 12 |
234 | lea edi, [page_tabs+edi*4] |
234 | lea edi, [page_tabs+edi*4] |
235 | @@: |
235 | @@: |
236 | stosd |
236 | stosd |
237 | invlpg [ebx] |
237 | invlpg [ebx] |
238 | add eax, 0x1000 |
238 | add eax, 0x1000 |
239 | add ebx, 0x1000 |
239 | add ebx, 0x1000 |
240 | loop @B |
240 | loop @B |
241 | 241 | ||
242 | pop edi |
242 | pop edi |
243 | 243 | ||
244 | mov ecx, pg_data.mutex |
244 | mov ecx, pg_data.mutex |
245 | call mutex_unlock |
245 | call mutex_unlock |
246 | .fail: |
246 | .fail: |
247 | ret |
247 | ret |
248 | 248 | ||
249 | 249 | ||
250 | ; param |
250 | ; param |
251 | ; eax= base |
251 | ; eax= base |
252 | ; ecx= count |
252 | ; ecx= count |
253 | 253 | ||
254 | align 4 |
254 | align 4 |
255 | release_pages: |
255 | release_pages: |
256 | 256 | ||
257 | push ebp |
257 | push ebp |
258 | push esi |
258 | push esi |
259 | push edi |
259 | push edi |
260 | push ebx |
260 | push ebx |
261 | 261 | ||
262 | mov esi, eax |
262 | mov esi, eax |
263 | mov edi, eax |
263 | mov edi, eax |
264 | 264 | ||
265 | shr esi, 12 |
265 | shr esi, 12 |
266 | lea esi, [page_tabs+esi*4] |
266 | lea esi, [page_tabs+esi*4] |
267 | 267 | ||
268 | push ecx |
268 | push ecx |
269 | mov ecx, pg_data.mutex |
269 | mov ecx, pg_data.mutex |
270 | call mutex_lock |
270 | call mutex_lock |
271 | pop ecx |
271 | pop ecx |
272 | 272 | ||
273 | mov ebp, [pg_data.pages_free] |
273 | mov ebp, [pg_data.pages_free] |
274 | mov ebx, [page_start] |
274 | mov ebx, [page_start] |
275 | mov edx, sys_pgmap |
275 | mov edx, sys_pgmap |
276 | @@: |
276 | @@: |
277 | xor eax, eax |
277 | xor eax, eax |
278 | xchg eax, [esi] |
278 | xchg eax, [esi] |
279 | invlpg [edi] |
279 | invlpg [edi] |
280 | 280 | ||
281 | test eax, 1 |
281 | test eax, 1 |
282 | jz .next |
282 | jz .next |
283 | 283 | ||
284 | shr eax, 12 |
284 | shr eax, 12 |
285 | bts [edx], eax |
285 | bts [edx], eax |
286 | cmc |
286 | cmc |
287 | adc ebp, 0 |
287 | adc ebp, 0 |
288 | shr eax, 3 |
288 | shr eax, 3 |
289 | and eax, -4 |
289 | and eax, -4 |
290 | add eax, edx |
290 | add eax, edx |
291 | cmp eax, ebx |
291 | cmp eax, ebx |
292 | jae .next |
292 | jae .next |
293 | 293 | ||
294 | mov ebx, eax |
294 | mov ebx, eax |
295 | .next: |
295 | .next: |
296 | add edi, 0x1000 |
296 | add edi, 0x1000 |
297 | add esi, 4 |
297 | add esi, 4 |
298 | loop @B |
298 | loop @B |
299 | 299 | ||
300 | mov [pg_data.pages_free], ebp |
300 | mov [pg_data.pages_free], ebp |
301 | mov ecx, pg_data.mutex |
301 | mov ecx, pg_data.mutex |
302 | call mutex_unlock |
302 | call mutex_unlock |
303 | 303 | ||
304 | pop ebx |
304 | pop ebx |
305 | pop edi |
305 | pop edi |
306 | pop esi |
306 | pop esi |
307 | pop ebp |
307 | pop ebp |
308 | ret |
308 | ret |
309 | 309 | ||
310 | ; param |
310 | ; param |
311 | ; eax= base |
311 | ; eax= base |
312 | ; ecx= count |
312 | ; ecx= count |
313 | 313 | ||
314 | align 4 |
314 | align 4 |
315 | unmap_pages: |
315 | unmap_pages: |
316 | 316 | ||
317 | push edi |
317 | push edi |
318 | 318 | ||
319 | mov edi, eax |
319 | mov edi, eax |
320 | mov edx, eax |
320 | mov edx, eax |
321 | 321 | ||
322 | shr edi, 10 |
322 | shr edi, 10 |
323 | add edi, page_tabs |
323 | add edi, page_tabs |
324 | 324 | ||
325 | xor eax, eax |
325 | xor eax, eax |
326 | @@: |
326 | @@: |
327 | stosd |
327 | stosd |
328 | invlpg [edx] |
328 | invlpg [edx] |
329 | add edx, 0x1000 |
329 | add edx, 0x1000 |
330 | loop @b |
330 | loop @b |
331 | 331 | ||
332 | pop edi |
332 | pop edi |
333 | ret |
333 | ret |
334 | 334 | ||
335 | 335 | ||
336 | align 4 |
336 | align 4 |
337 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
337 | proc map_page_table stdcall, lin_addr:dword, phis_addr:dword |
338 | push ebx |
338 | push ebx |
339 | mov ebx, [lin_addr] |
339 | mov ebx, [lin_addr] |
340 | shr ebx, 22 |
340 | shr ebx, 22 |
341 | mov eax, [phis_addr] |
341 | mov eax, [phis_addr] |
342 | and eax, not 0xFFF |
342 | and eax, not 0xFFF |
343 | or eax, PG_UW ;+PG_NOCACHE |
343 | or eax, PG_UW ;+PG_NOCACHE |
344 | mov dword [master_tab+ebx*4], eax |
344 | mov dword [master_tab+ebx*4], eax |
345 | mov eax, [lin_addr] |
345 | mov eax, [lin_addr] |
346 | shr eax, 10 |
346 | shr eax, 10 |
347 | add eax, page_tabs |
347 | add eax, page_tabs |
348 | invlpg [eax] |
348 | invlpg [eax] |
349 | pop ebx |
349 | pop ebx |
350 | ret |
350 | ret |
351 | endp |
351 | endp |
352 | 352 | ||
353 | align 4 |
353 | align 4 |
354 | proc init_LFB |
354 | proc init_LFB |
355 | locals |
355 | locals |
356 | pg_count dd ? |
356 | pg_count dd ? |
357 | endl |
357 | endl |
358 | 358 | ||
359 | cmp dword [LFBAddress], -1 |
359 | cmp dword [LFBAddress], -1 |
360 | jne @f |
360 | jne @f |
361 | mov [BOOT_VAR+BOOT_MTRR], byte 2 |
361 | mov [BOOT_VAR+BOOT_MTRR], byte 2 |
362 | ; max VGA=640*480*4=1228800 bytes |
362 | ; max VGA=640*480*4=1228800 bytes |
363 | ; + 32*640*4=81920 bytes for mouse pointer |
363 | ; + 32*640*4=81920 bytes for mouse pointer |
364 | stdcall alloc_pages, ((1228800+81920)/4096) |
364 | stdcall alloc_pages, ((1228800+81920)/4096) |
365 | 365 | ||
366 | push eax |
366 | push eax |
367 | call alloc_page |
367 | call alloc_page |
368 | stdcall map_page_table, LFB_BASE, eax |
368 | stdcall map_page_table, LFB_BASE, eax |
369 | pop eax |
369 | pop eax |
370 | or eax, PG_UW |
370 | or eax, PG_UW |
371 | mov ebx, LFB_BASE |
371 | mov ebx, LFB_BASE |
372 | ; max VGA=640*480*4=1228800 bytes |
372 | ; max VGA=640*480*4=1228800 bytes |
373 | ; + 32*640*4=81920 bytes for mouse pointer |
373 | ; + 32*640*4=81920 bytes for mouse pointer |
374 | mov ecx, (1228800+81920)/4096 |
374 | mov ecx, (1228800+81920)/4096 |
375 | call commit_pages |
375 | call commit_pages |
376 | mov [LFBAddress], dword LFB_BASE |
376 | mov [LFBAddress], dword LFB_BASE |
377 | ret |
377 | ret |
378 | @@: |
378 | @@: |
379 | test [SCR_MODE], word 0100000000000000b |
379 | test [SCR_MODE], word 0100000000000000b |
380 | jnz @f |
380 | jnz @f |
381 | mov [BOOT_VAR+BOOT_MTRR], byte 2 |
381 | mov [BOOT_VAR+BOOT_MTRR], byte 2 |
382 | ret |
382 | ret |
383 | @@: |
383 | @@: |
384 | call init_mtrr |
384 | call init_mtrr |
385 | 385 | ||
386 | mov edx, LFB_BASE |
386 | mov edx, LFB_BASE |
387 | mov esi, [LFBAddress] |
387 | mov esi, [LFBAddress] |
388 | mov edi, 0x00C00000 |
388 | mov edi, 0x00C00000 |
389 | mov dword [exp_lfb+4], edx |
389 | mov dword [exp_lfb+4], edx |
390 | 390 | ||
391 | shr edi, 12 |
391 | shr edi, 12 |
392 | mov [pg_count], edi |
392 | mov [pg_count], edi |
393 | shr edi, 10 |
393 | shr edi, 10 |
394 | 394 | ||
395 | bt [cpu_caps], CAPS_PSE |
395 | bt [cpu_caps], CAPS_PSE |
396 | jnc .map_page_tables |
396 | jnc .map_page_tables |
397 | or esi, PG_LARGE+PG_UW |
397 | or esi, PG_LARGE+PG_UW |
398 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
398 | mov edx, sys_pgdir+(LFB_BASE shr 20) |
399 | @@: |
399 | @@: |
400 | mov [edx], esi |
400 | mov [edx], esi |
401 | add edx, 4 |
401 | add edx, 4 |
402 | add esi, 0x00400000 |
402 | add esi, 0x00400000 |
403 | dec edi |
403 | dec edi |
404 | jnz @B |
404 | jnz @B |
405 | 405 | ||
406 | bt [cpu_caps], CAPS_PGE |
406 | bt [cpu_caps], CAPS_PGE |
407 | jnc @F |
407 | jnc @F |
408 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
408 | or dword [sys_pgdir+(LFB_BASE shr 20)], PG_GLOBAL |
409 | @@: |
409 | @@: |
410 | mov dword [LFBAddress], LFB_BASE |
410 | mov dword [LFBAddress], LFB_BASE |
411 | mov eax, cr3 ;flush TLB |
411 | mov eax, cr3 ;flush TLB |
412 | mov cr3, eax |
412 | mov cr3, eax |
413 | ret |
413 | ret |
414 | 414 | ||
415 | .map_page_tables: |
415 | .map_page_tables: |
416 | 416 | ||
417 | @@: |
417 | @@: |
418 | call alloc_page |
418 | call alloc_page |
419 | stdcall map_page_table, edx, eax |
419 | stdcall map_page_table, edx, eax |
420 | add edx, 0x00400000 |
420 | add edx, 0x00400000 |
421 | dec edi |
421 | dec edi |
422 | jnz @B |
422 | jnz @B |
423 | 423 | ||
424 | mov eax, [LFBAddress] |
424 | mov eax, [LFBAddress] |
425 | mov edi, page_tabs + (LFB_BASE shr 10) |
425 | mov edi, page_tabs + (LFB_BASE shr 10) |
426 | or eax, PG_UW |
426 | or eax, PG_UW |
427 | mov ecx, [pg_count] |
427 | mov ecx, [pg_count] |
428 | cld |
428 | cld |
429 | @@: |
429 | @@: |
430 | stosd |
430 | stosd |
431 | add eax, 0x1000 |
431 | add eax, 0x1000 |
432 | dec ecx |
432 | dec ecx |
433 | jnz @B |
433 | jnz @B |
434 | 434 | ||
435 | mov dword [LFBAddress], LFB_BASE |
435 | mov dword [LFBAddress], LFB_BASE |
436 | mov eax, cr3 ;flush TLB |
436 | mov eax, cr3 ;flush TLB |
437 | mov cr3, eax |
437 | mov cr3, eax |
438 | 438 | ||
439 | ret |
439 | ret |
440 | endp |
440 | endp |
441 | 441 | ||
442 | align 4 |
442 | align 4 |
443 | proc new_mem_resize stdcall, new_size:dword |
443 | proc new_mem_resize stdcall, new_size:dword |
- | 444 | ||
- | 445 | push ebx |
|
- | 446 | push esi |
|
- | 447 | push edi |
|
444 | 448 | ||
- | 449 | mov edx, [current_slot] |
|
445 | mov ecx, pg_data.mutex |
450 | cmp [edx+APPDATA.heap_base], 0 |
446 | call mutex_lock |
451 | jne .exit |
447 | 452 | ||
448 | mov edi, [new_size] |
453 | mov edi, [new_size] |
449 | add edi, 4095 |
454 | add edi, 4095 |
450 | and edi, not 4095 |
455 | and edi, not 4095 |
451 | mov [new_size], edi |
456 | mov [new_size], edi |
452 | - | ||
453 | mov edx, [current_slot] |
- | |
454 | cmp [edx+APPDATA.heap_base], 0 |
- | |
455 | jne .exit |
- | |
456 | 457 | ||
457 | mov esi, [edx+APPDATA.mem_size] |
458 | mov esi, [edx+APPDATA.mem_size] |
458 | add esi, 4095 |
459 | add esi, 4095 |
459 | and esi, not 4095 |
460 | and esi, not 4095 |
460 | 461 | ||
461 | cmp edi, esi |
462 | cmp edi, esi |
462 | jae .expand |
463 | ja .expand |
- | 464 | je .exit |
|
- | 465 | ||
463 | 466 | mov ebx, edi |
|
464 | shr edi, 12 |
467 | shr edi, 12 |
- | 468 | shr esi, 12 |
|
- | 469 | ||
- | 470 | mov ecx, pg_data.mutex |
|
465 | shr esi, 12 |
471 | call mutex_lock |
466 | @@: |
472 | @@: |
467 | mov eax, [app_page_tabs+edi*4] |
473 | mov eax, [app_page_tabs+edi*4] |
468 | test eax, 1 |
474 | test eax, 1 |
469 | jz .next |
475 | jz .next |
- | 476 | ||
470 | mov dword [app_page_tabs+edi*4], 2 |
477 | mov dword [app_page_tabs+edi*4], 0 |
471 | mov ebx, edi |
- | |
472 | shl ebx, 12 |
- | |
473 | push eax |
- | |
474 | invlpg [ebx] |
478 | invlpg [ebx] |
475 | pop eax |
- | |
476 | call free_page |
479 | call free_page |
477 | 480 | ||
478 | .next: |
481 | .next: |
- | 482 | inc edi |
|
479 | add edi, 1 |
483 | add ebx, 0x1000 |
480 | cmp edi, esi |
484 | cmp edi, esi |
481 | jb @B |
485 | jb @B |
482 | - | ||
483 | .update_size: |
- | |
484 | mov ebx, [new_size] |
- | |
485 | call update_mem_size |
- | |
486 | 486 | ||
487 | mov ecx, pg_data.mutex |
487 | mov ecx, pg_data.mutex |
488 | call mutex_unlock |
488 | call mutex_unlock |
- | 489 | ||
- | 490 | .update_size: |
|
- | 491 | mov edx, [current_slot] |
|
- | 492 | mov ebx, [new_size] |
|
- | 493 | call update_mem_size |
|
- | 494 | .exit: |
|
- | 495 | pop edi |
|
- | 496 | pop esi |
|
489 | 497 | pop ebx |
|
490 | xor eax, eax |
498 | xor eax, eax |
- | 499 | ret |
|
491 | ret |
500 | |
- | 501 | .expand: |
|
492 | .expand: |
502 | |
- | 503 | mov ecx, pg_data.mutex |
|
493 | 504 | call mutex_lock |
|
- | 505 | ||
- | 506 | xchg esi, edi |
|
- | 507 | ||
494 | push esi |
508 | push esi ;new size |
495 | push edi |
509 | push edi ;old size |
496 | 510 | ||
497 | add edi, 0x3FFFFF |
511 | add edi, 0x3FFFFF |
498 | and edi, not(0x3FFFFF) |
512 | and edi, not(0x3FFFFF) |
499 | add esi, 0x3FFFFF |
513 | add esi, 0x3FFFFF |
500 | and esi, not(0x3FFFFF) |
514 | and esi, not(0x3FFFFF) |
501 | 515 | ||
502 | cmp esi, edi |
516 | cmp edi, esi |
503 | jae .grow |
- | |
504 | - | ||
505 | xchg esi, edi |
- | |
506 | 517 | jae .grow |
|
507 | @@: |
518 | @@: |
508 | call alloc_page |
519 | call alloc_page |
509 | test eax, eax |
520 | test eax, eax |
510 | jz .exit_pop |
521 | jz .exit_fail |
511 | 522 | ||
512 | stdcall map_page_table, edi, eax |
523 | stdcall map_page_table, edi, eax |
513 | 524 | ||
514 | push edi |
525 | push edi |
515 | shr edi, 10 |
526 | shr edi, 10 |
516 | add edi, page_tabs |
527 | add edi, page_tabs |
517 | mov ecx, 1024 |
528 | mov ecx, 1024 |
518 | xor eax, eax |
529 | xor eax, eax |
519 | cld |
530 | cld |
520 | rep stosd |
531 | rep stosd |
521 | pop edi |
532 | pop edi |
522 | 533 | ||
523 | add edi, 0x00400000 |
534 | add edi, 0x00400000 |
524 | cmp edi, esi |
535 | cmp edi, esi |
525 | jb @B |
536 | jb @B |
526 | .grow: |
537 | .grow: |
527 | ;//- |
- | |
528 | pop edi |
- | |
529 | push edi |
- | |
530 | mov esi, [pg_data.pages_free] |
538 | pop edi ;old size |
531 | sub esi, 1 |
- | |
532 | shr edi, 12 |
- | |
533 | cmp esi, edi |
- | |
534 | jle .out_of_memory |
- | |
535 | ;//- |
- | |
536 | pop edi |
- | |
537 | pop esi |
- | |
538 | @@: |
- | |
539 | call alloc_page |
- | |
540 | test eax, eax |
- | |
541 | jz .exit |
- | |
542 | stdcall map_page, esi, eax, dword PG_UW |
539 | pop ecx ;new size |
543 | 540 | ||
544 | push edi |
541 | shr edi, 10 |
545 | mov edi, esi |
542 | shr ecx, 10 |
- | 543 | sub ecx, edi |
|
546 | xor eax, eax |
544 | shr ecx, 2 ;pages count |
- | 545 | mov eax, 2 |
|
547 | mov ecx, 1024 |
546 | |
548 | cld |
547 | add edi, app_page_tabs |
549 | rep stosd |
- | |
550 | pop edi |
548 | rep stosd |
551 | 549 | ||
552 | add esi, 0x1000 |
- | |
553 | cmp esi, edi |
550 | mov ecx, pg_data.mutex |
554 | jb @B |
551 | call mutex_unlock |
555 | 552 | ||
556 | jmp .update_size |
- | |
557 | ;//- |
- | |
558 | .exit_pop: |
- | |
559 | .out_of_memory: |
- | |
560 | ;//- |
- | |
561 | pop edi |
553 | jmp .update_size |
562 | pop esi |
554 | |
563 | .exit: |
555 | .exit_fail: |
564 | mov ecx, pg_data.mutex |
556 | mov ecx, pg_data.mutex |
565 | call mutex_unlock |
557 | call mutex_unlock |
- | 558 | ||
- | 559 | add esp, 8 |
|
- | 560 | pop edi |
|
- | 561 | pop esi |
|
566 | 562 | pop ebx |
|
567 | xor eax, eax |
563 | xor eax, eax |
568 | inc eax |
564 | inc eax |
569 | ret |
565 | ret |
570 | endp |
566 | endp |
- | 567 | ||
- | 568 | ||
571 | 569 | align 4 |
|
572 | update_mem_size: |
570 | update_mem_size: |
573 | ; in: edx = slot base |
571 | ; in: edx = slot base |
574 | ; ebx = new memory size |
572 | ; ebx = new memory size |
575 | ; destroys eax,ecx,edx |
573 | ; destroys eax,ecx,edx |
576 | 574 | ||
577 | mov [APPDATA.mem_size+edx], ebx |
575 | mov [APPDATA.mem_size+edx], ebx |
578 | ;search threads and update |
576 | ;search threads and update |
579 | ;application memory size infomation |
577 | ;application memory size infomation |
580 | mov ecx, [APPDATA.dir_table+edx] |
578 | mov ecx, [APPDATA.dir_table+edx] |
581 | mov eax, 2 |
579 | mov eax, 2 |
582 | 580 | ||
583 | .search_threads: |
581 | .search_threads: |
584 | ;eax = current slot |
582 | ;eax = current slot |
585 | ;ebx = new memory size |
583 | ;ebx = new memory size |
586 | ;ecx = page directory |
584 | ;ecx = page directory |
587 | cmp eax, [TASK_COUNT] |
585 | cmp eax, [TASK_COUNT] |
588 | jg .search_threads_end |
586 | jg .search_threads_end |
589 | mov edx, eax |
587 | mov edx, eax |
590 | shl edx, 5 |
588 | shl edx, 5 |
591 | cmp word [CURRENT_TASK+edx+TASKDATA.state], 9 ;if slot empty? |
589 | cmp word [CURRENT_TASK+edx+TASKDATA.state], 9 ;if slot empty? |
592 | jz .search_threads_next |
590 | jz .search_threads_next |
593 | shl edx, 3 |
591 | shl edx, 3 |
594 | cmp [SLOT_BASE+edx+APPDATA.dir_table], ecx ;if it is our thread? |
592 | cmp [SLOT_BASE+edx+APPDATA.dir_table], ecx ;if it is our thread? |
595 | jnz .search_threads_next |
593 | jnz .search_threads_next |
596 | mov [SLOT_BASE+edx+APPDATA.mem_size], ebx ;update memory size |
594 | mov [SLOT_BASE+edx+APPDATA.mem_size], ebx ;update memory size |
597 | .search_threads_next: |
595 | .search_threads_next: |
598 | inc eax |
596 | inc eax |
599 | jmp .search_threads |
597 | jmp .search_threads |
600 | .search_threads_end: |
598 | .search_threads_end: |
601 | ret |
599 | ret |
602 | 600 | ||
603 | ; param |
601 | ; param |
604 | ; eax= linear address |
602 | ; eax= linear address |
605 | ; |
603 | ; |
606 | ; retval |
604 | ; retval |
607 | ; eax= phisical page address |
605 | ; eax= phisical page address |
608 | 606 | ||
609 | align 4 |
607 | align 4 |
610 | get_pg_addr: |
608 | get_pg_addr: |
611 | shr eax, 12 |
609 | shr eax, 12 |
612 | mov eax, [page_tabs+eax*4] |
610 | mov eax, [page_tabs+eax*4] |
613 | and eax, 0xFFFFF000 |
611 | and eax, 0xFFFFF000 |
614 | ret |
612 | ret |
615 | 613 | ||
616 | 614 | ||
617 | align 4 |
615 | align 4 |
618 | ; Now it is called from core/sys32::exc_c (see stack frame there) |
616 | ; Now it is called from core/sys32::exc_c (see stack frame there) |
619 | proc page_fault_handler |
617 | proc page_fault_handler |
620 | 618 | ||
621 | .err_addr equ ebp-4 |
619 | .err_addr equ ebp-4 |
622 | 620 | ||
623 | push ebx ;save exception number (#PF) |
621 | push ebx ;save exception number (#PF) |
624 | mov ebp, esp |
622 | mov ebp, esp |
625 | mov ebx, cr2 |
623 | mov ebx, cr2 |
626 | push ebx ;that is locals: .err_addr = cr2 |
624 | push ebx ;that is locals: .err_addr = cr2 |
627 | inc [pg_data.pages_faults] |
625 | inc [pg_data.pages_faults] |
628 | 626 | ||
629 | mov eax, [pf_err_code] |
627 | mov eax, [pf_err_code] |
630 | 628 | ||
631 | cmp ebx, OS_BASE ;ebx == .err_addr |
629 | cmp ebx, OS_BASE ;ebx == .err_addr |
632 | jb .user_space ;ñòðà Ãèöà â ïà ìÿòè ïðèëîæåÃèÿ ; |
630 | jb .user_space ;ñòðà Ãèöà â ïà ìÿòè ïðèëîæåÃèÿ ; |
633 | 631 | ||
634 | cmp ebx, page_tabs |
632 | cmp ebx, page_tabs |
635 | jb .kernel_space ;ñòðà Ãèöà â ïà ìÿòè ÿäðà |
633 | jb .kernel_space ;ñòðà Ãèöà â ïà ìÿòè ÿäðà |
636 | 634 | ||
637 | cmp ebx, kernel_tabs |
635 | cmp ebx, kernel_tabs |
638 | jb .alloc;.app_tabs ;òà áëèöû ñòðà Ãèö ïðèëîæåÃèÿ ; |
636 | jb .alloc;.app_tabs ;òà áëèöû ñòðà Ãèö ïðèëîæåÃèÿ ; |
639 | ;ïðîñòî ñîçäà äèì îäÃó |
637 | ;ïðîñòî ñîçäà äèì îäÃó |
640 | if 0 ;ïîêà ýòî ïðîñòî ëèøÃåå |
638 | if 0 ;ïîêà ýòî ïðîñòî ëèøÃåå |
641 | cmp ebx, LFB_BASE |
639 | cmp ebx, LFB_BASE |
642 | jb .core_tabs ;òà áëèöû ñòðà Ãèö ÿäðà |
640 | jb .core_tabs ;òà áëèöû ñòðà Ãèö ÿäðà |
643 | ;Îøèáêà |
641 | ;Îøèáêà |
644 | .lfb: |
642 | .lfb: |
645 | ;îáëà ñòü LFB |
643 | ;îáëà ñòü LFB |
646 | ;Îøèáêà |
644 | ;Îøèáêà |
647 | jmp .fail |
645 | jmp .fail |
648 | end if |
646 | end if |
649 | .core_tabs: |
647 | .core_tabs: |
650 | .fail: ;simply return to caller |
648 | .fail: ;simply return to caller |
651 | mov esp, ebp |
649 | mov esp, ebp |
652 | pop ebx ;restore exception number (#PF) |
650 | pop ebx ;restore exception number (#PF) |
653 | ret |
651 | ret |
654 | 652 | ||
655 | ; xchg bx, bx |
653 | ; xchg bx, bx |
656 | ; add esp,12 ;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
654 | ; add esp,12 ;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
657 | ; restore_ring3_context |
655 | ; restore_ring3_context |
658 | ; iretd |
656 | ; iretd |
659 | 657 | ||
660 | .user_space: |
658 | .user_space: |
661 | test eax, PG_MAP |
659 | test eax, PG_MAP |
662 | jnz .err_access ;Ñòðà Ãèöà ïðèñóòñòâóåò |
660 | jnz .err_access ;Ñòðà Ãèöà ïðèñóòñòâóåò |
663 | ;Îøèáêà äîñòóïà ? |
661 | ;Îøèáêà äîñòóïà ? |
664 | 662 | ||
665 | shr ebx, 12 |
663 | shr ebx, 12 |
666 | mov ecx, ebx |
664 | mov ecx, ebx |
667 | shr ecx, 10 |
665 | shr ecx, 10 |
668 | mov edx, [master_tab+ecx*4] |
666 | mov edx, [master_tab+ecx*4] |
669 | test edx, PG_MAP |
667 | test edx, PG_MAP |
670 | jz .fail ;òà áëèöà ñòðà Ãèö ÃÃ¥ ñîçäà Ãà |
668 | jz .fail ;òà áëèöà ñòðà Ãèö ÃÃ¥ ñîçäà Ãà |
671 | ;ÃåâåðÃûé à äðåñ â ïðîãðà ììå |
669 | ;ÃåâåðÃûé à äðåñ â ïðîãðà ììå |
672 | 670 | ||
673 | mov eax, [page_tabs+ebx*4] |
671 | mov eax, [page_tabs+ebx*4] |
674 | test eax, 2 |
672 | test eax, 2 |
675 | jz .fail ;à äðåñ ÃÃ¥ çà ðåçåðâèðîâà à äëÿ ; |
673 | jz .fail ;à äðåñ ÃÃ¥ çà ðåçåðâèðîâà à äëÿ ; |
676 | ;èñïîëüçîâà Ãèÿ. Îøèáêà |
674 | ;èñïîëüçîâà Ãèÿ. Îøèáêà |
677 | .alloc: |
675 | .alloc: |
678 | call alloc_page |
676 | call alloc_page |
679 | test eax, eax |
677 | test eax, eax |
680 | jz .fail |
678 | jz .fail |
681 | 679 | ||
682 | stdcall map_page, [.err_addr], eax, PG_UW |
680 | stdcall map_page, [.err_addr], eax, PG_UW |
683 | 681 | ||
684 | mov edi, [.err_addr] |
682 | mov edi, [.err_addr] |
685 | and edi, 0xFFFFF000 |
683 | and edi, 0xFFFFF000 |
686 | mov ecx, 1024 |
684 | mov ecx, 1024 |
687 | xor eax, eax |
685 | xor eax, eax |
688 | ;cld ;caller is duty for this |
686 | ;cld ;caller is duty for this |
689 | rep stosd |
687 | rep stosd |
690 | .exit: ;iret with repeat fault instruction |
688 | .exit: ;iret with repeat fault instruction |
691 | add esp, 12;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
689 | add esp, 12;clear in stack: locals(.err_addr) + #PF + ret_to_caller |
692 | restore_ring3_context |
690 | restore_ring3_context |
693 | iretd |
691 | iretd |
694 | 692 | ||
695 | .err_access: |
693 | .err_access: |
696 | ; access denied? this may be a result of copy-on-write protection for DLL |
694 | ; access denied? this may be a result of copy-on-write protection for DLL |
697 | ; check list of HDLLs |
695 | ; check list of HDLLs |
698 | and ebx, not 0xFFF |
696 | and ebx, not 0xFFF |
699 | mov eax, [CURRENT_TASK] |
697 | mov eax, [CURRENT_TASK] |
700 | shl eax, 8 |
698 | shl eax, 8 |
701 | mov eax, [SLOT_BASE+eax+APPDATA.dlls_list_ptr] |
699 | mov eax, [SLOT_BASE+eax+APPDATA.dlls_list_ptr] |
702 | test eax, eax |
700 | test eax, eax |
703 | jz .fail |
701 | jz .fail |
704 | mov esi, [eax+HDLL.fd] |
702 | mov esi, [eax+HDLL.fd] |
705 | .scan_hdll: |
703 | .scan_hdll: |
706 | cmp esi, eax |
704 | cmp esi, eax |
707 | jz .fail |
705 | jz .fail |
708 | mov edx, ebx |
706 | mov edx, ebx |
709 | sub edx, [esi+HDLL.base] |
707 | sub edx, [esi+HDLL.base] |
710 | cmp edx, [esi+HDLL.size] |
708 | cmp edx, [esi+HDLL.size] |
711 | jb .fault_in_hdll |
709 | jb .fault_in_hdll |
712 | .scan_hdll.next: |
710 | .scan_hdll.next: |
713 | mov esi, [esi+HDLL.fd] |
711 | mov esi, [esi+HDLL.fd] |
714 | jmp .scan_hdll |
712 | jmp .scan_hdll |
715 | .fault_in_hdll: |
713 | .fault_in_hdll: |
716 | ; allocate new page, map it as rw and copy data |
714 | ; allocate new page, map it as rw and copy data |
717 | call alloc_page |
715 | call alloc_page |
718 | test eax, eax |
716 | test eax, eax |
719 | jz .fail |
717 | jz .fail |
720 | stdcall map_page, ebx, eax, PG_UW |
718 | stdcall map_page, ebx, eax, PG_UW |
721 | mov edi, ebx |
719 | mov edi, ebx |
722 | mov ecx, 1024 |
720 | mov ecx, 1024 |
723 | sub ebx, [esi+HDLL.base] |
721 | sub ebx, [esi+HDLL.base] |
724 | mov esi, [esi+HDLL.parent] |
722 | mov esi, [esi+HDLL.parent] |
725 | mov esi, [esi+DLLDESCR.data] |
723 | mov esi, [esi+DLLDESCR.data] |
726 | add esi, ebx |
724 | add esi, ebx |
727 | rep movsd |
725 | rep movsd |
728 | jmp .exit |
726 | jmp .exit |
729 | 727 | ||
730 | .kernel_space: |
728 | .kernel_space: |
731 | test eax, PG_MAP |
729 | test eax, PG_MAP |
732 | jz .fail ;ñòðà Ãèöà ÃÃ¥ ïðèñóòñòâóåò |
730 | jz .fail ;ñòðà Ãèöà ÃÃ¥ ïðèñóòñòâóåò |
733 | 731 | ||
734 | test eax, 12 ;U/S (+below) |
732 | test eax, 12 ;U/S (+below) |
735 | jnz .fail ;ïðèëîæåÃèå îáðà òèëîñü ê ïà ìÿòè |
733 | jnz .fail ;ïðèëîæåÃèå îáðà òèëîñü ê ïà ìÿòè |
736 | ;ÿäðà |
734 | ;ÿäðà |
737 | ;test eax, 8 |
735 | ;test eax, 8 |
738 | ;jnz .fail ;óñòà Ãîâëåà çà ðåçåðâèðîâà ÃÃûé áèò |
736 | ;jnz .fail ;óñòà Ãîâëåà çà ðåçåðâèðîâà ÃÃûé áèò |
739 | ;â òà áëèöà õ ñòðà Ãèö. äîáà âëåÃî â P4/Xeon |
737 | ;â òà áëèöà õ ñòðà Ãèö. äîáà âëåÃî â P4/Xeon |
740 | 738 | ||
741 | ;ïîïûòêà çà ïèñè â çà ùèù¸ÃÃóþ ñòðà Ãèöó ÿäðà |
739 | ;ïîïûòêà çà ïèñè â çà ùèù¸ÃÃóþ ñòðà Ãèöó ÿäðà |
742 | 740 | ||
743 | cmp ebx, tss._io_map_0 |
741 | cmp ebx, tss._io_map_0 |
744 | jb .fail |
742 | jb .fail |
745 | 743 | ||
746 | cmp ebx, tss._io_map_0+8192 |
744 | cmp ebx, tss._io_map_0+8192 |
747 | jae .fail |
745 | jae .fail |
748 | 746 | ||
749 | ; io permission map |
747 | ; io permission map |
750 | ; copy-on-write protection |
748 | ; copy-on-write protection |
751 | 749 | ||
752 | call alloc_page |
750 | call alloc_page |
753 | test eax, eax |
751 | test eax, eax |
754 | jz .fail |
752 | jz .fail |
755 | 753 | ||
756 | push eax |
754 | push eax |
757 | stdcall map_page, [.err_addr], eax, dword PG_SW |
755 | stdcall map_page, [.err_addr], eax, dword PG_SW |
758 | pop eax |
756 | pop eax |
759 | mov edi, [.err_addr] |
757 | mov edi, [.err_addr] |
760 | and edi, -4096 |
758 | and edi, -4096 |
761 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
759 | lea esi, [edi+(not tss._io_map_0)+1]; -tss._io_map_0 |
762 | 760 | ||
763 | mov ebx, esi |
761 | mov ebx, esi |
764 | shr ebx, 12 |
762 | shr ebx, 12 |
765 | mov edx, [current_slot] |
763 | mov edx, [current_slot] |
766 | or eax, PG_SW |
764 | or eax, PG_SW |
767 | mov [edx+APPDATA.io_map+ebx*4], eax |
765 | mov [edx+APPDATA.io_map+ebx*4], eax |
768 | 766 | ||
769 | add esi, [default_io_map] |
767 | add esi, [default_io_map] |
770 | mov ecx, 4096/4 |
768 | mov ecx, 4096/4 |
771 | ;cld ;caller is duty for this |
769 | ;cld ;caller is duty for this |
772 | rep movsd |
770 | rep movsd |
773 | jmp .exit |
771 | jmp .exit |
774 | endp |
772 | endp |
775 | 773 | ||
776 | ; returns number of mapped bytes |
774 | ; returns number of mapped bytes |
777 | proc map_mem stdcall, lin_addr:dword,slot:dword,\ |
775 | proc map_mem stdcall, lin_addr:dword,slot:dword,\ |
778 | ofs:dword,buf_size:dword,req_access:dword |
776 | ofs:dword,buf_size:dword,req_access:dword |
779 | push 0 ; initialize number of mapped bytes |
777 | push 0 ; initialize number of mapped bytes |
780 | 778 | ||
781 | cmp [buf_size], 0 |
779 | cmp [buf_size], 0 |
782 | jz .exit |
780 | jz .exit |
783 | 781 | ||
784 | mov eax, [slot] |
782 | mov eax, [slot] |
785 | shl eax, 8 |
783 | shl eax, 8 |
786 | mov eax, [SLOT_BASE+eax+APPDATA.dir_table] |
784 | mov eax, [SLOT_BASE+eax+APPDATA.dir_table] |
787 | and eax, 0xFFFFF000 |
785 | and eax, 0xFFFFF000 |
788 | 786 | ||
789 | stdcall map_page, [ipc_pdir], eax, PG_UW |
787 | stdcall map_page, [ipc_pdir], eax, PG_UW |
790 | mov ebx, [ofs] |
788 | mov ebx, [ofs] |
791 | shr ebx, 22 |
789 | shr ebx, 22 |
792 | mov esi, [ipc_pdir] |
790 | mov esi, [ipc_pdir] |
793 | mov edi, [ipc_ptab] |
791 | mov edi, [ipc_ptab] |
794 | mov eax, [esi+ebx*4] |
792 | mov eax, [esi+ebx*4] |
795 | and eax, 0xFFFFF000 |
793 | and eax, 0xFFFFF000 |
796 | jz .exit |
794 | jz .exit |
797 | stdcall map_page, edi, eax, PG_UW |
795 | stdcall map_page, edi, eax, PG_UW |
798 | ; inc ebx |
796 | ; inc ebx |
799 | ; add edi, 0x1000 |
797 | ; add edi, 0x1000 |
800 | ; mov eax, [esi+ebx*4] |
798 | ; mov eax, [esi+ebx*4] |
801 | ; test eax, eax |
799 | ; test eax, eax |
802 | ; jz @f |
800 | ; jz @f |
803 | ; and eax, 0xFFFFF000 |
801 | ; and eax, 0xFFFFF000 |
804 | ; stdcall map_page, edi, eax |
802 | ; stdcall map_page, edi, eax |
805 | 803 | ||
806 | @@: |
804 | @@: |
807 | mov edi, [lin_addr] |
805 | mov edi, [lin_addr] |
808 | and edi, 0xFFFFF000 |
806 | and edi, 0xFFFFF000 |
809 | mov ecx, [buf_size] |
807 | mov ecx, [buf_size] |
810 | add ecx, 4095 |
808 | add ecx, 4095 |
811 | shr ecx, 12 |
809 | shr ecx, 12 |
812 | inc ecx |
810 | inc ecx |
813 | 811 | ||
814 | mov edx, [ofs] |
812 | mov edx, [ofs] |
815 | shr edx, 12 |
813 | shr edx, 12 |
816 | and edx, 0x3FF |
814 | and edx, 0x3FF |
817 | mov esi, [ipc_ptab] |
815 | mov esi, [ipc_ptab] |
818 | 816 | ||
819 | .map: |
817 | .map: |
820 | stdcall safe_map_page, [slot], [req_access], [ofs] |
818 | stdcall safe_map_page, [slot], [req_access], [ofs] |
821 | jnc .exit |
819 | jnc .exit |
822 | add dword [ebp-4], 4096 |
820 | add dword [ebp-4], 4096 |
823 | add [ofs], 4096 |
821 | add [ofs], 4096 |
824 | dec ecx |
822 | dec ecx |
825 | jz .exit |
823 | jz .exit |
826 | add edi, 0x1000 |
824 | add edi, 0x1000 |
827 | inc edx |
825 | inc edx |
828 | cmp edx, 0x400 |
826 | cmp edx, 0x400 |
829 | jnz .map |
827 | jnz .map |
830 | inc ebx |
828 | inc ebx |
831 | mov eax, [ipc_pdir] |
829 | mov eax, [ipc_pdir] |
832 | mov eax, [eax+ebx*4] |
830 | mov eax, [eax+ebx*4] |
833 | and eax, 0xFFFFF000 |
831 | and eax, 0xFFFFF000 |
834 | jz .exit |
832 | jz .exit |
835 | stdcall map_page, esi, eax, PG_UW |
833 | stdcall map_page, esi, eax, PG_UW |
836 | xor edx, edx |
834 | xor edx, edx |
837 | jmp .map |
835 | jmp .map |
838 | 836 | ||
839 | .exit: |
837 | .exit: |
840 | pop eax |
838 | pop eax |
841 | ret |
839 | ret |
842 | endp |
840 | endp |
843 | 841 | ||
844 | proc map_memEx stdcall, lin_addr:dword,slot:dword,\ |
842 | proc map_memEx stdcall, lin_addr:dword,slot:dword,\ |
845 | ofs:dword,buf_size:dword,req_access:dword |
843 | ofs:dword,buf_size:dword,req_access:dword |
846 | push 0 ; initialize number of mapped bytes |
844 | push 0 ; initialize number of mapped bytes |
847 | 845 | ||
848 | cmp [buf_size], 0 |
846 | cmp [buf_size], 0 |
849 | jz .exit |
847 | jz .exit |
850 | 848 | ||
851 | mov eax, [slot] |
849 | mov eax, [slot] |
852 | shl eax, 8 |
850 | shl eax, 8 |
853 | mov eax, [SLOT_BASE+eax+APPDATA.dir_table] |
851 | mov eax, [SLOT_BASE+eax+APPDATA.dir_table] |
854 | and eax, 0xFFFFF000 |
852 | and eax, 0xFFFFF000 |
855 | 853 | ||
856 | stdcall map_page, [proc_mem_pdir], eax, PG_UW |
854 | stdcall map_page, [proc_mem_pdir], eax, PG_UW |
857 | mov ebx, [ofs] |
855 | mov ebx, [ofs] |
858 | shr ebx, 22 |
856 | shr ebx, 22 |
859 | mov esi, [proc_mem_pdir] |
857 | mov esi, [proc_mem_pdir] |
860 | mov edi, [proc_mem_tab] |
858 | mov edi, [proc_mem_tab] |
861 | mov eax, [esi+ebx*4] |
859 | mov eax, [esi+ebx*4] |
862 | and eax, 0xFFFFF000 |
860 | and eax, 0xFFFFF000 |
863 | test eax, eax |
861 | test eax, eax |
864 | jz .exit |
862 | jz .exit |
865 | stdcall map_page, edi, eax, PG_UW |
863 | stdcall map_page, edi, eax, PG_UW |
866 | 864 | ||
867 | @@: |
865 | @@: |
868 | mov edi, [lin_addr] |
866 | mov edi, [lin_addr] |
869 | and edi, 0xFFFFF000 |
867 | and edi, 0xFFFFF000 |
870 | mov ecx, [buf_size] |
868 | mov ecx, [buf_size] |
871 | add ecx, 4095 |
869 | add ecx, 4095 |
872 | shr ecx, 12 |
870 | shr ecx, 12 |
873 | inc ecx |
871 | inc ecx |
874 | 872 | ||
875 | mov edx, [ofs] |
873 | mov edx, [ofs] |
876 | shr edx, 12 |
874 | shr edx, 12 |
877 | and edx, 0x3FF |
875 | and edx, 0x3FF |
878 | mov esi, [proc_mem_tab] |
876 | mov esi, [proc_mem_tab] |
879 | 877 | ||
880 | .map: |
878 | .map: |
881 | stdcall safe_map_page, [slot], [req_access], [ofs] |
879 | stdcall safe_map_page, [slot], [req_access], [ofs] |
882 | jnc .exit |
880 | jnc .exit |
883 | add dword [ebp-4], 0x1000 |
881 | add dword [ebp-4], 0x1000 |
884 | add edi, 0x1000 |
882 | add edi, 0x1000 |
885 | add [ofs], 0x1000 |
883 | add [ofs], 0x1000 |
886 | inc edx |
884 | inc edx |
887 | dec ecx |
885 | dec ecx |
888 | jnz .map |
886 | jnz .map |
889 | .exit: |
887 | .exit: |
890 | pop eax |
888 | pop eax |
891 | ret |
889 | ret |
892 | endp |
890 | endp |
893 | 891 | ||
894 | ; in: esi+edx*4 = pointer to page table entry |
892 | ; in: esi+edx*4 = pointer to page table entry |
895 | ; in: [slot], [req_access], [ofs] on the stack |
893 | ; in: [slot], [req_access], [ofs] on the stack |
896 | ; in: edi = linear address to map |
894 | ; in: edi = linear address to map |
897 | ; out: CF cleared <=> failed |
895 | ; out: CF cleared <=> failed |
898 | ; destroys: only eax |
896 | ; destroys: only eax |
899 | proc safe_map_page stdcall, slot:dword, req_access:dword, ofs:dword |
897 | proc safe_map_page stdcall, slot:dword, req_access:dword, ofs:dword |
900 | mov eax, [esi+edx*4] |
898 | mov eax, [esi+edx*4] |
901 | test al, PG_MAP |
899 | test al, PG_MAP |
902 | jz .not_present |
900 | jz .not_present |
903 | test al, PG_WRITE |
901 | test al, PG_WRITE |
904 | jz .resolve_readonly |
902 | jz .resolve_readonly |
905 | ; normal case: writable page, just map with requested access |
903 | ; normal case: writable page, just map with requested access |
906 | .map: |
904 | .map: |
907 | stdcall map_page, edi, eax, [req_access] |
905 | stdcall map_page, edi, eax, [req_access] |
908 | stc |
906 | stc |
909 | .fail: |
907 | .fail: |
910 | ret |
908 | ret |
911 | .not_present: |
909 | .not_present: |
912 | ; check for alloc-on-demand page |
910 | ; check for alloc-on-demand page |
913 | test al, 2 |
911 | test al, 2 |
914 | jz .fail |
912 | jz .fail |
915 | ; allocate new page, save it to source page table |
913 | ; allocate new page, save it to source page table |
916 | push ecx |
914 | push ecx |
917 | call alloc_page |
915 | call alloc_page |
918 | pop ecx |
916 | pop ecx |
919 | test eax, eax |
917 | test eax, eax |
920 | jz .fail |
918 | jz .fail |
921 | or al, PG_UW |
919 | or al, PG_UW |
922 | mov [esi+edx*4], eax |
920 | mov [esi+edx*4], eax |
923 | jmp .map |
921 | jmp .map |
924 | .resolve_readonly: |
922 | .resolve_readonly: |
925 | ; readonly page, probably copy-on-write |
923 | ; readonly page, probably copy-on-write |
926 | ; check: readonly request of readonly page is ok |
924 | ; check: readonly request of readonly page is ok |
927 | test [req_access], PG_WRITE |
925 | test [req_access], PG_WRITE |
928 | jz .map |
926 | jz .map |
929 | ; find control structure for this page |
927 | ; find control structure for this page |
930 | pushf |
928 | pushf |
931 | cli |
929 | cli |
932 | cld |
930 | cld |
933 | push ebx ecx |
931 | push ebx ecx |
934 | mov eax, [slot] |
932 | mov eax, [slot] |
935 | shl eax, 8 |
933 | shl eax, 8 |
936 | mov eax, [SLOT_BASE+eax+APPDATA.dlls_list_ptr] |
934 | mov eax, [SLOT_BASE+eax+APPDATA.dlls_list_ptr] |
937 | test eax, eax |
935 | test eax, eax |
938 | jz .no_hdll |
936 | jz .no_hdll |
939 | mov ecx, [eax+HDLL.fd] |
937 | mov ecx, [eax+HDLL.fd] |
940 | .scan_hdll: |
938 | .scan_hdll: |
941 | cmp ecx, eax |
939 | cmp ecx, eax |
942 | jz .no_hdll |
940 | jz .no_hdll |
943 | mov ebx, [ofs] |
941 | mov ebx, [ofs] |
944 | and ebx, not 0xFFF |
942 | and ebx, not 0xFFF |
945 | sub ebx, [ecx+HDLL.base] |
943 | sub ebx, [ecx+HDLL.base] |
946 | cmp ebx, [ecx+HDLL.size] |
944 | cmp ebx, [ecx+HDLL.size] |
947 | jb .hdll_found |
945 | jb .hdll_found |
948 | mov ecx, [ecx+HDLL.fd] |
946 | mov ecx, [ecx+HDLL.fd] |
949 | jmp .scan_hdll |
947 | jmp .scan_hdll |
950 | .no_hdll: |
948 | .no_hdll: |
951 | pop ecx ebx |
949 | pop ecx ebx |
952 | popf |
950 | popf |
953 | clc |
951 | clc |
954 | ret |
952 | ret |
955 | .hdll_found: |
953 | .hdll_found: |
956 | ; allocate page, save it in page table, map it, copy contents from base |
954 | ; allocate page, save it in page table, map it, copy contents from base |
957 | mov eax, [ecx+HDLL.parent] |
955 | mov eax, [ecx+HDLL.parent] |
958 | add ebx, [eax+DLLDESCR.data] |
956 | add ebx, [eax+DLLDESCR.data] |
959 | call alloc_page |
957 | call alloc_page |
960 | test eax, eax |
958 | test eax, eax |
961 | jz .no_hdll |
959 | jz .no_hdll |
962 | or al, PG_UW |
960 | or al, PG_UW |
963 | mov [esi+edx*4], eax |
961 | mov [esi+edx*4], eax |
964 | stdcall map_page, edi, eax, [req_access] |
962 | stdcall map_page, edi, eax, [req_access] |
965 | push esi edi |
963 | push esi edi |
966 | mov esi, ebx |
964 | mov esi, ebx |
967 | mov ecx, 4096/4 |
965 | mov ecx, 4096/4 |
968 | rep movsd |
966 | rep movsd |
969 | pop edi esi |
967 | pop edi esi |
970 | pop ecx ebx |
968 | pop ecx ebx |
971 | popf |
969 | popf |
972 | stc |
970 | stc |
973 | ret |
971 | ret |
974 | endp |
972 | endp |
975 | 973 | ||
976 | sys_IPC: |
974 | sys_IPC: |
977 | ;input: |
975 | ;input: |
978 | ; ebx=1 - set ipc buffer area |
976 | ; ebx=1 - set ipc buffer area |
979 | ; ecx=address of buffer |
977 | ; ecx=address of buffer |
980 | ; edx=size of buffer |
978 | ; edx=size of buffer |
981 | ; eax=2 - send message |
979 | ; eax=2 - send message |
982 | ; ebx=PID |
980 | ; ebx=PID |
983 | ; ecx=address of message |
981 | ; ecx=address of message |
984 | ; edx=size of message |
982 | ; edx=size of message |
985 | 983 | ||
986 | dec ebx |
984 | dec ebx |
987 | jnz @f |
985 | jnz @f |
988 | 986 | ||
989 | mov eax, [current_slot] |
987 | mov eax, [current_slot] |
990 | pushf |
988 | pushf |
991 | cli |
989 | cli |
992 | mov [eax+APPDATA.ipc_start], ecx ;set fields in extended information area |
990 | mov [eax+APPDATA.ipc_start], ecx ;set fields in extended information area |
993 | mov [eax+APPDATA.ipc_size], edx |
991 | mov [eax+APPDATA.ipc_size], edx |
994 | 992 | ||
995 | add edx, ecx |
993 | add edx, ecx |
996 | add edx, 4095 |
994 | add edx, 4095 |
997 | and edx, not 4095 |
995 | and edx, not 4095 |
998 | 996 | ||
999 | .touch: |
997 | .touch: |
1000 | mov eax, [ecx] |
998 | mov eax, [ecx] |
1001 | add ecx, 0x1000 |
999 | add ecx, 0x1000 |
1002 | cmp ecx, edx |
1000 | cmp ecx, edx |
1003 | jb .touch |
1001 | jb .touch |
1004 | 1002 | ||
1005 | popf |
1003 | popf |
1006 | mov [esp+32], ebx ;ebx=0 |
1004 | mov [esp+32], ebx ;ebx=0 |
1007 | ret |
1005 | ret |
1008 | 1006 | ||
1009 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1007 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1010 | ;2 |
1008 | ;2 |
1011 | @@: |
1009 | @@: |
1012 | dec ebx |
1010 | dec ebx |
1013 | jnz @f |
1011 | jnz @f |
1014 | 1012 | ||
1015 | stdcall sys_ipc_send, ecx, edx, esi |
1013 | stdcall sys_ipc_send, ecx, edx, esi |
1016 | mov [esp+32], eax |
1014 | mov [esp+32], eax |
1017 | ret |
1015 | ret |
1018 | @@: |
1016 | @@: |
1019 | or eax, -1 |
1017 | or eax, -1 |
1020 | mov [esp+32], eax |
1018 | mov [esp+32], eax |
1021 | ret |
1019 | ret |
1022 | 1020 | ||
1023 | ;align 4 |
1021 | ;align 4 |
1024 | ;proc set_ipc_buff |
1022 | ;proc set_ipc_buff |
1025 | 1023 | ||
1026 | ; mov eax,[current_slot] |
1024 | ; mov eax,[current_slot] |
1027 | ; pushf |
1025 | ; pushf |
1028 | ; cli |
1026 | ; cli |
1029 | ; mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
1027 | ; mov [eax+APPDATA.ipc_start],ebx ;set fields in extended information area |
1030 | ; mov [eax+APPDATA.ipc_size],ecx |
1028 | ; mov [eax+APPDATA.ipc_size],ecx |
1031 | ; |
1029 | ; |
1032 | ; add ecx, ebx |
1030 | ; add ecx, ebx |
1033 | ; add ecx, 4095 |
1031 | ; add ecx, 4095 |
1034 | ; and ecx, not 4095 |
1032 | ; and ecx, not 4095 |
1035 | ; |
1033 | ; |
1036 | ;.touch: mov eax, [ebx] |
1034 | ;.touch: mov eax, [ebx] |
1037 | ; add ebx, 0x1000 |
1035 | ; add ebx, 0x1000 |
1038 | ; cmp ebx, ecx |
1036 | ; cmp ebx, ecx |
1039 | ; jb .touch |
1037 | ; jb .touch |
1040 | ; |
1038 | ; |
1041 | ; popf |
1039 | ; popf |
1042 | ; xor eax, eax |
1040 | ; xor eax, eax |
1043 | ; ret |
1041 | ; ret |
1044 | ;endp |
1042 | ;endp |
1045 | 1043 | ||
1046 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
1044 | proc sys_ipc_send stdcall, PID:dword, msg_addr:dword, msg_size:dword |
1047 | locals |
1045 | locals |
1048 | dst_slot dd ? |
1046 | dst_slot dd ? |
1049 | dst_offset dd ? |
1047 | dst_offset dd ? |
1050 | buf_size dd ? |
1048 | buf_size dd ? |
1051 | used_buf dd ? |
1049 | used_buf dd ? |
1052 | endl |
1050 | endl |
1053 | 1051 | ||
1054 | pushf |
1052 | pushf |
1055 | cli |
1053 | cli |
1056 | 1054 | ||
1057 | mov eax, [PID] |
1055 | mov eax, [PID] |
1058 | call pid_to_slot |
1056 | call pid_to_slot |
1059 | test eax, eax |
1057 | test eax, eax |
1060 | jz .no_pid |
1058 | jz .no_pid |
1061 | 1059 | ||
1062 | mov [dst_slot], eax |
1060 | mov [dst_slot], eax |
1063 | shl eax, 8 |
1061 | shl eax, 8 |
1064 | mov edi, [eax+SLOT_BASE+0xa0] ;is ipc area defined? |
1062 | mov edi, [eax+SLOT_BASE+0xa0] ;is ipc area defined? |
1065 | test edi, edi |
1063 | test edi, edi |
1066 | jz .no_ipc_area |
1064 | jz .no_ipc_area |
1067 | 1065 | ||
1068 | mov ebx, edi |
1066 | mov ebx, edi |
1069 | and ebx, 0xFFF |
1067 | and ebx, 0xFFF |
1070 | mov [dst_offset], ebx |
1068 | mov [dst_offset], ebx |
1071 | 1069 | ||
1072 | mov esi, [eax+SLOT_BASE+0xa4] |
1070 | mov esi, [eax+SLOT_BASE+0xa4] |
1073 | mov [buf_size], esi |
1071 | mov [buf_size], esi |
1074 | 1072 | ||
1075 | mov ecx, [ipc_tmp] |
1073 | mov ecx, [ipc_tmp] |
1076 | cmp esi, 0x40000-0x1000; size of [ipc_tmp] minus one page |
1074 | cmp esi, 0x40000-0x1000; size of [ipc_tmp] minus one page |
1077 | jbe @f |
1075 | jbe @f |
1078 | push esi edi |
1076 | push esi edi |
1079 | add esi, 0x1000 |
1077 | add esi, 0x1000 |
1080 | stdcall alloc_kernel_space, esi |
1078 | stdcall alloc_kernel_space, esi |
1081 | mov ecx, eax |
1079 | mov ecx, eax |
1082 | pop edi esi |
1080 | pop edi esi |
1083 | @@: |
1081 | @@: |
1084 | mov [used_buf], ecx |
1082 | mov [used_buf], ecx |
1085 | stdcall map_mem, ecx, [dst_slot], \ |
1083 | stdcall map_mem, ecx, [dst_slot], \ |
1086 | edi, esi, PG_SW |
1084 | edi, esi, PG_SW |
1087 | 1085 | ||
1088 | mov edi, [dst_offset] |
1086 | mov edi, [dst_offset] |
1089 | add edi, [used_buf] |
1087 | add edi, [used_buf] |
1090 | cmp dword [edi], 0 |
1088 | cmp dword [edi], 0 |
1091 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
1089 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
1092 | 1090 | ||
1093 | mov edx, dword [edi+4] |
1091 | mov edx, dword [edi+4] |
1094 | lea ebx, [edx+8] |
1092 | lea ebx, [edx+8] |
1095 | add ebx, [msg_size] |
1093 | add ebx, [msg_size] |
1096 | cmp ebx, [buf_size] |
1094 | cmp ebx, [buf_size] |
1097 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
1095 | ja .buffer_overflow ;esi<0 - not enough memory in buffer |
1098 | 1096 | ||
1099 | mov dword [edi+4], ebx |
1097 | mov dword [edi+4], ebx |
1100 | mov eax, [TASK_BASE] |
1098 | mov eax, [TASK_BASE] |
1101 | mov eax, [eax+0x04] ;eax - our PID |
1099 | mov eax, [eax+0x04] ;eax - our PID |
1102 | add edi, edx |
1100 | add edi, edx |
1103 | mov [edi], eax |
1101 | mov [edi], eax |
1104 | mov ecx, [msg_size] |
1102 | mov ecx, [msg_size] |
1105 | 1103 | ||
1106 | mov [edi+4], ecx |
1104 | mov [edi+4], ecx |
1107 | add edi, 8 |
1105 | add edi, 8 |
1108 | mov esi, [msg_addr] |
1106 | mov esi, [msg_addr] |
1109 | ; add esi, new_app_base |
1107 | ; add esi, new_app_base |
1110 | cld |
1108 | cld |
1111 | rep movsb |
1109 | rep movsb |
1112 | 1110 | ||
1113 | mov ebx, [ipc_tmp] |
1111 | mov ebx, [ipc_tmp] |
1114 | mov edx, ebx |
1112 | mov edx, ebx |
1115 | shr ebx, 12 |
1113 | shr ebx, 12 |
1116 | xor eax, eax |
1114 | xor eax, eax |
1117 | mov [page_tabs+ebx*4], eax |
1115 | mov [page_tabs+ebx*4], eax |
1118 | invlpg [edx] |
1116 | invlpg [edx] |
1119 | 1117 | ||
1120 | mov ebx, [ipc_pdir] |
1118 | mov ebx, [ipc_pdir] |
1121 | mov edx, ebx |
1119 | mov edx, ebx |
1122 | shr ebx, 12 |
1120 | shr ebx, 12 |
1123 | xor eax, eax |
1121 | xor eax, eax |
1124 | mov [page_tabs+ebx*4], eax |
1122 | mov [page_tabs+ebx*4], eax |
1125 | invlpg [edx] |
1123 | invlpg [edx] |
1126 | 1124 | ||
1127 | mov ebx, [ipc_ptab] |
1125 | mov ebx, [ipc_ptab] |
1128 | mov edx, ebx |
1126 | mov edx, ebx |
1129 | shr ebx, 12 |
1127 | shr ebx, 12 |
1130 | xor eax, eax |
1128 | xor eax, eax |
1131 | mov [page_tabs+ebx*4], eax |
1129 | mov [page_tabs+ebx*4], eax |
1132 | invlpg [edx] |
1130 | invlpg [edx] |
1133 | 1131 | ||
1134 | mov eax, [dst_slot] |
1132 | mov eax, [dst_slot] |
1135 | shl eax, 8 |
1133 | shl eax, 8 |
1136 | or [eax+SLOT_BASE+0xA8], dword 0x40 |
1134 | or [eax+SLOT_BASE+0xA8], dword 0x40 |
1137 | cmp dword [check_idle_semaphore], 20 |
1135 | cmp dword [check_idle_semaphore], 20 |
1138 | jge .ipc_no_cis |
1136 | jge .ipc_no_cis |
1139 | 1137 | ||
1140 | mov dword [check_idle_semaphore], 5 |
1138 | mov dword [check_idle_semaphore], 5 |
1141 | .ipc_no_cis: |
1139 | .ipc_no_cis: |
1142 | push 0 |
1140 | push 0 |
1143 | jmp .ret |
1141 | jmp .ret |
1144 | .no_pid: |
1142 | .no_pid: |
1145 | popf |
1143 | popf |
1146 | mov eax, 4 |
1144 | mov eax, 4 |
1147 | ret |
1145 | ret |
1148 | .no_ipc_area: |
1146 | .no_ipc_area: |
1149 | popf |
1147 | popf |
1150 | xor eax, eax |
1148 | xor eax, eax |
1151 | inc eax |
1149 | inc eax |
1152 | ret |
1150 | ret |
1153 | .ipc_blocked: |
1151 | .ipc_blocked: |
1154 | push 2 |
1152 | push 2 |
1155 | jmp .ret |
1153 | jmp .ret |
1156 | .buffer_overflow: |
1154 | .buffer_overflow: |
1157 | push 3 |
1155 | push 3 |
1158 | .ret: |
1156 | .ret: |
1159 | mov eax, [used_buf] |
1157 | mov eax, [used_buf] |
1160 | cmp eax, [ipc_tmp] |
1158 | cmp eax, [ipc_tmp] |
1161 | jz @f |
1159 | jz @f |
1162 | stdcall free_kernel_space, eax |
1160 | stdcall free_kernel_space, eax |
1163 | @@: |
1161 | @@: |
1164 | pop eax |
1162 | pop eax |
1165 | popf |
1163 | popf |
1166 | ret |
1164 | ret |
1167 | endp |
1165 | endp |
1168 | 1166 | ||
1169 | align 4 |
1167 | align 4 |
1170 | sysfn_meminfo: |
1168 | sysfn_meminfo: |
1171 | 1169 | ||
1172 | ; add ecx, new_app_base |
1170 | ; add ecx, new_app_base |
1173 | cmp ecx, OS_BASE |
1171 | cmp ecx, OS_BASE |
1174 | jae .fail |
1172 | jae .fail |
1175 | 1173 | ||
1176 | mov eax, [pg_data.pages_count] |
1174 | mov eax, [pg_data.pages_count] |
1177 | mov [ecx], eax |
1175 | mov [ecx], eax |
1178 | shl eax, 12 |
1176 | shl eax, 12 |
1179 | mov [esp+32], eax |
1177 | mov [esp+32], eax |
1180 | mov eax, [pg_data.pages_free] |
1178 | mov eax, [pg_data.pages_free] |
1181 | mov [ecx+4], eax |
1179 | mov [ecx+4], eax |
1182 | mov eax, [pg_data.pages_faults] |
1180 | mov eax, [pg_data.pages_faults] |
1183 | mov [ecx+8], eax |
1181 | mov [ecx+8], eax |
1184 | mov eax, [heap_size] |
1182 | mov eax, [heap_size] |
1185 | mov [ecx+12], eax |
1183 | mov [ecx+12], eax |
1186 | mov eax, [heap_free] |
1184 | mov eax, [heap_free] |
1187 | mov [ecx+16], eax |
1185 | mov [ecx+16], eax |
1188 | mov eax, [heap_blocks] |
1186 | mov eax, [heap_blocks] |
1189 | mov [ecx+20], eax |
1187 | mov [ecx+20], eax |
1190 | mov eax, [free_blocks] |
1188 | mov eax, [free_blocks] |
1191 | mov [ecx+24], eax |
1189 | mov [ecx+24], eax |
1192 | ret |
1190 | ret |
1193 | .fail: |
1191 | .fail: |
1194 | or dword [esp+32], -1 |
1192 | or dword [esp+32], -1 |
1195 | ret |
1193 | ret |
1196 | 1194 | ||
1197 | align 4 |
1195 | align 4 |
1198 | f68: |
1196 | f68: |
1199 | cmp ebx, 4 |
1197 | cmp ebx, 4 |
1200 | jbe sys_sheduler |
1198 | jbe sys_sheduler |
1201 | 1199 | ||
1202 | cmp ebx, 11 |
1200 | cmp ebx, 11 |
1203 | jb .fail |
1201 | jb .fail |
1204 | 1202 | ||
1205 | cmp ebx, 25 |
1203 | cmp ebx, 25 |
1206 | ja .fail |
1204 | ja .fail |
1207 | 1205 | ||
1208 | jmp dword [f68call+ebx*4-11*4] |
1206 | jmp dword [f68call+ebx*4-11*4] |
1209 | .11: |
1207 | .11: |
1210 | call init_heap |
1208 | call init_heap |
1211 | mov [esp+32], eax |
1209 | mov [esp+32], eax |
1212 | ret |
1210 | ret |
1213 | .12: |
1211 | .12: |
1214 | stdcall user_alloc, ecx |
1212 | stdcall user_alloc, ecx |
1215 | mov [esp+32], eax |
1213 | mov [esp+32], eax |
1216 | ret |
1214 | ret |
1217 | .13: |
1215 | .13: |
1218 | stdcall user_free, ecx |
1216 | stdcall user_free, ecx |
1219 | mov [esp+32], eax |
1217 | mov [esp+32], eax |
1220 | ret |
1218 | ret |
1221 | .14: |
1219 | .14: |
1222 | cmp ecx, OS_BASE |
1220 | cmp ecx, OS_BASE |
1223 | jae .fail |
1221 | jae .fail |
1224 | mov edi, ecx |
1222 | mov edi, ecx |
1225 | call get_event_ex |
1223 | call get_event_ex |
1226 | mov [esp+32], eax |
1224 | mov [esp+32], eax |
1227 | ret |
1225 | ret |
1228 | .16: |
1226 | .16: |
1229 | test ecx, ecx |
1227 | test ecx, ecx |
1230 | jz .fail |
1228 | jz .fail |
1231 | cmp ecx, OS_BASE |
1229 | cmp ecx, OS_BASE |
1232 | jae .fail |
1230 | jae .fail |
1233 | stdcall get_service, ecx |
1231 | stdcall get_service, ecx |
1234 | mov [esp+32], eax |
1232 | mov [esp+32], eax |
1235 | ret |
1233 | ret |
1236 | .17: |
1234 | .17: |
1237 | call srv_handlerEx ;ecx |
1235 | call srv_handlerEx ;ecx |
1238 | mov [esp+32], eax |
1236 | mov [esp+32], eax |
1239 | ret |
1237 | ret |
1240 | .19: |
1238 | .19: |
1241 | cmp ecx, OS_BASE |
1239 | cmp ecx, OS_BASE |
1242 | jae .fail |
1240 | jae .fail |
1243 | stdcall load_library, ecx |
1241 | stdcall load_library, ecx |
1244 | mov [esp+32], eax |
1242 | mov [esp+32], eax |
1245 | ret |
1243 | ret |
1246 | .20: |
1244 | .20: |
1247 | mov eax, edx |
1245 | mov eax, edx |
1248 | mov ebx, ecx |
1246 | mov ebx, ecx |
1249 | call user_realloc ;in: eax = pointer, ebx = new size |
1247 | call user_realloc ;in: eax = pointer, ebx = new size |
1250 | mov [esp+32], eax |
1248 | mov [esp+32], eax |
1251 | ret |
1249 | ret |
1252 | .21: |
1250 | .21: |
1253 | cmp ecx, OS_BASE |
1251 | cmp ecx, OS_BASE |
1254 | jae .fail |
1252 | jae .fail |
1255 | 1253 | ||
1256 | cmp ebx, OS_BASE |
1254 | cmp edx, OS_BASE |
1257 | jae .fail |
1255 | jae .fail |
1258 | 1256 | ||
1259 | mov edi, edx |
1257 | mov edi, edx |
1260 | stdcall load_PE, ecx |
1258 | stdcall load_PE, ecx |
1261 | mov esi, eax |
1259 | mov esi, eax |
1262 | test eax, eax |
1260 | test eax, eax |
1263 | jz @F |
1261 | jz @F |
1264 | 1262 | ||
1265 | push edi |
1263 | push edi |
1266 | push DRV_ENTRY |
1264 | push DRV_ENTRY |
1267 | call eax |
1265 | call eax |
1268 | add esp, 8 |
1266 | add esp, 8 |
1269 | test eax, eax |
1267 | test eax, eax |
1270 | jz @F |
1268 | jz @F |
1271 | 1269 | ||
1272 | mov [eax+SRV.entry], esi |
1270 | mov [eax+SRV.entry], esi |
1273 | 1271 | ||
1274 | @@: |
1272 | @@: |
1275 | mov [esp+32], eax |
1273 | mov [esp+32], eax |
1276 | ret |
1274 | ret |
1277 | .22: |
1275 | .22: |
1278 | cmp ecx, OS_BASE |
1276 | cmp ecx, OS_BASE |
1279 | jae .fail |
1277 | jae .fail |
1280 | 1278 | ||
1281 | stdcall shmem_open, ecx, edx, esi |
1279 | stdcall shmem_open, ecx, edx, esi |
1282 | mov [esp+24], edx |
1280 | mov [esp+24], edx |
1283 | mov [esp+32], eax |
1281 | mov [esp+32], eax |
1284 | ret |
1282 | ret |
1285 | 1283 | ||
1286 | .23: |
1284 | .23: |
1287 | cmp ecx, OS_BASE |
1285 | cmp ecx, OS_BASE |
1288 | jae .fail |
1286 | jae .fail |
1289 | 1287 | ||
1290 | stdcall shmem_close, ecx |
1288 | stdcall shmem_close, ecx |
1291 | mov [esp+32], eax |
1289 | mov [esp+32], eax |
1292 | ret |
1290 | ret |
1293 | .24: |
1291 | .24: |
1294 | mov eax, [current_slot] |
1292 | mov eax, [current_slot] |
1295 | xchg ecx, [eax+APPDATA.exc_handler] |
1293 | xchg ecx, [eax+APPDATA.exc_handler] |
1296 | xchg edx, [eax+APPDATA.except_mask] |
1294 | xchg edx, [eax+APPDATA.except_mask] |
1297 | mov [esp+32], ecx ; reg_eax+8 |
1295 | mov [esp+32], ecx ; reg_eax+8 |
1298 | mov [esp+20], edx ; reg_ebx+8 |
1296 | mov [esp+20], edx ; reg_ebx+8 |
1299 | ret |
1297 | ret |
1300 | .25: |
1298 | .25: |
1301 | cmp ecx, 32 |
1299 | cmp ecx, 32 |
1302 | jae .fail |
1300 | jae .fail |
1303 | mov eax, [current_slot] |
1301 | mov eax, [current_slot] |
1304 | btr [eax+APPDATA.except_mask], ecx |
1302 | btr [eax+APPDATA.except_mask], ecx |
1305 | setc byte[esp+32] |
1303 | setc byte[esp+32] |
1306 | jecxz @f |
1304 | jecxz @f |
1307 | bts [eax+APPDATA.except_mask], ecx |
1305 | bts [eax+APPDATA.except_mask], ecx |
1308 | @@: |
1306 | @@: |
1309 | ret |
1307 | ret |
1310 | 1308 | ||
1311 | .26: |
1309 | .26: |
1312 | stdcall user_unmap, ecx, edx, esi |
1310 | stdcall user_unmap, ecx, edx, esi |
1313 | mov [esp+32], eax |
1311 | mov [esp+32], eax |
1314 | ret |
1312 | ret |
1315 | 1313 | ||
1316 | .fail: |
1314 | .fail: |
1317 | xor eax, eax |
1315 | xor eax, eax |
1318 | mov [esp+32], eax |
1316 | mov [esp+32], eax |
1319 | ret |
1317 | ret |
1320 | 1318 | ||
1321 | 1319 | ||
1322 | align 4 |
1320 | align 4 |
1323 | f68call: ; keep this table closer to main code |
1321 | f68call: ; keep this table closer to main code |
1324 | 1322 | ||
1325 | dd f68.11 ; init_heap |
1323 | dd f68.11 ; init_heap |
1326 | dd f68.12 ; user_alloc |
1324 | dd f68.12 ; user_alloc |
1327 | dd f68.13 ; user_free |
1325 | dd f68.13 ; user_free |
1328 | dd f68.14 ; get_event_ex |
1326 | dd f68.14 ; get_event_ex |
1329 | dd f68.fail ; moved to f68.24 |
1327 | dd f68.fail ; moved to f68.24 |
1330 | dd f68.16 ; get_service |
1328 | dd f68.16 ; get_service |
1331 | dd f68.17 ; call_service |
1329 | dd f68.17 ; call_service |
1332 | dd f68.fail ; moved to f68.25 |
1330 | dd f68.fail ; moved to f68.25 |
1333 | dd f68.19 ; load_dll |
1331 | dd f68.19 ; load_dll |
1334 | dd f68.20 ; user_realloc |
1332 | dd f68.20 ; user_realloc |
1335 | dd f68.21 ; load_driver |
1333 | dd f68.21 ; load_driver |
1336 | dd f68.22 ; shmem_open |
1334 | dd f68.22 ; shmem_open |
1337 | dd f68.23 ; shmem_close |
1335 | dd f68.23 ; shmem_close |
1338 | dd f68.24 ; set exception handler |
1336 | dd f68.24 ; set exception handler |
1339 | dd f68.25 ; unmask exception |
1337 | dd f68.25 ; unmask exception |
1340 | dd f68.26 ; user_unmap |
1338 | dd f68.26 ; user_unmap |
1341 | 1339 | ||
1342 | 1340 | ||
1343 | align 4 |
1341 | align 4 |
1344 | proc load_pe_driver stdcall, file:dword |
1342 | proc load_pe_driver stdcall, file:dword |
1345 | 1343 | ||
1346 | stdcall load_PE, [file] |
1344 | stdcall load_PE, [file] |
1347 | test eax, eax |
1345 | test eax, eax |
1348 | jz .fail |
1346 | jz .fail |
1349 | 1347 | ||
1350 | mov esi, eax |
1348 | mov esi, eax |
1351 | stdcall eax, DRV_ENTRY |
1349 | stdcall eax, DRV_ENTRY |
1352 | test eax, eax |
1350 | test eax, eax |
1353 | jz .fail |
1351 | jz .fail |
1354 | 1352 | ||
1355 | mov [eax+SRV.entry], esi |
1353 | mov [eax+SRV.entry], esi |
1356 | ret |
1354 | ret |
1357 | 1355 | ||
1358 | .fail: |
1356 | .fail: |
1359 | xor eax, eax |
1357 | xor eax, eax |
1360 | ret |
1358 | ret |
1361 | endp |
1359 | endp |
1362 | 1360 | ||
1363 | 1361 | ||
1364 | align 4 |
1362 | align 4 |
1365 | proc init_mtrr |
1363 | proc init_mtrr |
1366 | 1364 | ||
1367 | cmp [BOOT_VAR+BOOT_MTRR], byte 2 |
1365 | cmp [BOOT_VAR+BOOT_MTRR], byte 2 |
1368 | je .exit |
1366 | je .exit |
1369 | 1367 | ||
1370 | bt [cpu_caps], CAPS_MTRR |
1368 | bt [cpu_caps], CAPS_MTRR |
1371 | jnc .exit |
1369 | jnc .exit |
1372 | 1370 | ||
1373 | mov eax, cr0 |
1371 | mov eax, cr0 |
1374 | or eax, 0x60000000 ;disable caching |
1372 | or eax, 0x60000000 ;disable caching |
1375 | mov cr0, eax |
1373 | mov cr0, eax |
1376 | wbinvd ;invalidate cache |
1374 | wbinvd ;invalidate cache |
1377 | 1375 | ||
1378 | mov ecx, 0x2FF |
1376 | mov ecx, 0x2FF |
1379 | rdmsr ; |
1377 | rdmsr ; |
1380 | ; has BIOS already initialized MTRRs? |
1378 | ; has BIOS already initialized MTRRs? |
1381 | test ah, 8 |
1379 | test ah, 8 |
1382 | jnz .skip_init |
1380 | jnz .skip_init |
1383 | ; rarely needed, so mainly placeholder |
1381 | ; rarely needed, so mainly placeholder |
1384 | ; main memory - cached |
1382 | ; main memory - cached |
1385 | push eax |
1383 | push eax |
1386 | 1384 | ||
1387 | mov eax, [MEM_AMOUNT] |
1385 | mov eax, [MEM_AMOUNT] |
1388 | ; round eax up to next power of 2 |
1386 | ; round eax up to next power of 2 |
1389 | dec eax |
1387 | dec eax |
1390 | bsr ecx, eax |
1388 | bsr ecx, eax |
1391 | mov ebx, 2 |
1389 | mov ebx, 2 |
1392 | shl ebx, cl |
1390 | shl ebx, cl |
1393 | dec ebx |
1391 | dec ebx |
1394 | ; base of memory range = 0, type of memory range = MEM_WB |
1392 | ; base of memory range = 0, type of memory range = MEM_WB |
1395 | xor edx, edx |
1393 | xor edx, edx |
1396 | mov eax, MEM_WB |
1394 | mov eax, MEM_WB |
1397 | mov ecx, 0x200 |
1395 | mov ecx, 0x200 |
1398 | wrmsr |
1396 | wrmsr |
1399 | ; mask of memory range = 0xFFFFFFFFF - (size - 1), ebx = size - 1 |
1397 | ; mask of memory range = 0xFFFFFFFFF - (size - 1), ebx = size - 1 |
1400 | mov eax, 0xFFFFFFFF |
1398 | mov eax, 0xFFFFFFFF |
1401 | mov edx, 0x0000000F |
1399 | mov edx, 0x0000000F |
1402 | sub eax, ebx |
1400 | sub eax, ebx |
1403 | sbb edx, 0 |
1401 | sbb edx, 0 |
1404 | or eax, 0x800 |
1402 | or eax, 0x800 |
1405 | inc ecx |
1403 | inc ecx |
1406 | wrmsr |
1404 | wrmsr |
1407 | ; clear unused MTRRs |
1405 | ; clear unused MTRRs |
1408 | xor eax, eax |
1406 | xor eax, eax |
1409 | xor edx, edx |
1407 | xor edx, edx |
1410 | @@: |
1408 | @@: |
1411 | wrmsr |
1409 | wrmsr |
1412 | inc ecx |
1410 | inc ecx |
1413 | cmp ecx, 0x210 |
1411 | cmp ecx, 0x210 |
1414 | jb @b |
1412 | jb @b |
1415 | ; enable MTRRs |
1413 | ; enable MTRRs |
1416 | pop eax |
1414 | pop eax |
1417 | or ah, 8 |
1415 | or ah, 8 |
1418 | and al, 0xF0; default memtype = UC |
1416 | and al, 0xF0; default memtype = UC |
1419 | mov ecx, 0x2FF |
1417 | mov ecx, 0x2FF |
1420 | wrmsr |
1418 | wrmsr |
1421 | .skip_init: |
1419 | .skip_init: |
1422 | stdcall set_mtrr, [LFBAddress], [LFBSize], MEM_WC |
1420 | stdcall set_mtrr, [LFBAddress], [LFBSize], MEM_WC |
1423 | 1421 | ||
1424 | wbinvd ;again invalidate |
1422 | wbinvd ;again invalidate |
1425 | 1423 | ||
1426 | mov eax, cr0 |
1424 | mov eax, cr0 |
1427 | and eax, not 0x60000000 |
1425 | and eax, not 0x60000000 |
1428 | mov cr0, eax ; enable caching |
1426 | mov cr0, eax ; enable caching |
1429 | .exit: |
1427 | .exit: |
1430 | ret |
1428 | ret |
1431 | endp |
1429 | endp |
1432 | 1430 | ||
1433 | align 4 |
1431 | align 4 |
1434 | proc set_mtrr stdcall, base:dword,size:dword,mem_type:dword |
1432 | proc set_mtrr stdcall, base:dword,size:dword,mem_type:dword |
1435 | ; find unused register |
1433 | ; find unused register |
1436 | mov ecx, 0x201 |
1434 | mov ecx, 0x201 |
1437 | @@: |
1435 | @@: |
1438 | rdmsr |
1436 | rdmsr |
1439 | dec ecx |
1437 | dec ecx |
1440 | test ah, 8 |
1438 | test ah, 8 |
1441 | jz .found |
1439 | jz .found |
1442 | rdmsr |
1440 | rdmsr |
1443 | mov al, 0; clear memory type field |
1441 | mov al, 0; clear memory type field |
1444 | cmp eax, [base] |
1442 | cmp eax, [base] |
1445 | jz .ret |
1443 | jz .ret |
1446 | add ecx, 3 |
1444 | add ecx, 3 |
1447 | cmp ecx, 0x210 |
1445 | cmp ecx, 0x210 |
1448 | jb @b |
1446 | jb @b |
1449 | ; no free registers, ignore the call |
1447 | ; no free registers, ignore the call |
1450 | .ret: |
1448 | .ret: |
1451 | ret |
1449 | ret |
1452 | .found: |
1450 | .found: |
1453 | ; found, write values |
1451 | ; found, write values |
1454 | xor edx, edx |
1452 | xor edx, edx |
1455 | mov eax, [base] |
1453 | mov eax, [base] |
1456 | or eax, [mem_type] |
1454 | or eax, [mem_type] |
1457 | wrmsr |
1455 | wrmsr |
1458 | 1456 | ||
1459 | mov ebx, [size] |
1457 | mov ebx, [size] |
1460 | dec ebx |
1458 | dec ebx |
1461 | mov eax, 0xFFFFFFFF |
1459 | mov eax, 0xFFFFFFFF |
1462 | mov edx, 0x00000000 |
1460 | mov edx, 0x0000000F |
1463 | sub eax, ebx |
1461 | sub eax, ebx |
1464 | sbb edx, 0 |
1462 | sbb edx, 0 |
1465 | or eax, 0x800 |
1463 | or eax, 0x800 |
1466 | inc ecx |
1464 | inc ecx |
1467 | wrmsr |
1465 | wrmsr |
1468 | ret |
1466 | ret |
1469 | endp |
1467 | endp |
1470 | 1468 | ||
1471 | align 4 |
1469 | align 4 |
1472 | proc stall stdcall, delay:dword |
1470 | proc stall stdcall, delay:dword |
1473 | push ecx |
1471 | push ecx |
1474 | push edx |
1472 | push edx |
1475 | push ebx |
1473 | push ebx |
1476 | push eax |
1474 | push eax |
1477 | 1475 | ||
1478 | mov eax, [delay] |
1476 | mov eax, [delay] |
1479 | mul [stall_mcs] |
1477 | mul [stall_mcs] |
1480 | mov ebx, eax ;low |
1478 | mov ebx, eax ;low |
1481 | mov ecx, edx ;high |
1479 | mov ecx, edx ;high |
1482 | rdtsc |
1480 | rdtsc |
1483 | add ebx, eax |
1481 | add ebx, eax |
1484 | adc ecx, edx |
1482 | adc ecx, edx |
1485 | @@: |
1483 | @@: |
1486 | rdtsc |
1484 | rdtsc |
1487 | sub eax, ebx |
1485 | sub eax, ebx |
1488 | sbb edx, ecx |
1486 | sbb edx, ecx |
1489 | jb @B |
1487 | jb @B |
1490 | 1488 | ||
1491 | pop eax |
1489 | pop eax |
1492 | pop ebx |
1490 | pop ebx |
1493 | pop edx |
1491 | pop edx |
1494 | pop ecx |
1492 | pop ecx |
1495 | ret |
1493 | ret |
1496 | endp |
1494 | endp |
1497 | 1495 | ||
1498 | align 4 |
1496 | align 4 |
1499 | proc create_ring_buffer stdcall, size:dword, flags:dword |
1497 | proc create_ring_buffer stdcall, size:dword, flags:dword |
1500 | locals |
1498 | locals |
1501 | buf_ptr dd ? |
1499 | buf_ptr dd ? |
1502 | endl |
1500 | endl |
1503 | 1501 | ||
1504 | mov eax, [size] |
1502 | mov eax, [size] |
1505 | test eax, eax |
1503 | test eax, eax |
1506 | jz .fail |
1504 | jz .fail |
1507 | 1505 | ||
1508 | add eax, eax |
1506 | add eax, eax |
1509 | stdcall alloc_kernel_space, eax |
1507 | stdcall alloc_kernel_space, eax |
1510 | test eax, eax |
1508 | test eax, eax |
1511 | jz .fail |
1509 | jz .fail |
1512 | 1510 | ||
1513 | push ebx |
1511 | push ebx |
1514 | 1512 | ||
1515 | mov [buf_ptr], eax |
1513 | mov [buf_ptr], eax |
1516 | 1514 | ||
1517 | mov ebx, [size] |
1515 | mov ebx, [size] |
1518 | shr ebx, 12 |
1516 | shr ebx, 12 |
1519 | push ebx |
1517 | push ebx |
1520 | 1518 | ||
1521 | stdcall alloc_pages, ebx |
1519 | stdcall alloc_pages, ebx |
1522 | pop ecx |
1520 | pop ecx |
1523 | 1521 | ||
1524 | test eax, eax |
1522 | test eax, eax |
1525 | jz .mm_fail |
1523 | jz .mm_fail |
1526 | 1524 | ||
1527 | push edi |
1525 | push edi |
1528 | 1526 | ||
1529 | or eax, [flags] |
1527 | or eax, [flags] |
1530 | mov edi, [buf_ptr] |
1528 | mov edi, [buf_ptr] |
1531 | mov ebx, [buf_ptr] |
1529 | mov ebx, [buf_ptr] |
1532 | mov edx, ecx |
1530 | mov edx, ecx |
1533 | shl edx, 2 |
1531 | shl edx, 2 |
1534 | shr edi, 10 |
1532 | shr edi, 10 |
1535 | @@: |
1533 | @@: |
1536 | mov [page_tabs+edi], eax |
1534 | mov [page_tabs+edi], eax |
1537 | mov [page_tabs+edi+edx], eax |
1535 | mov [page_tabs+edi+edx], eax |
1538 | invlpg [ebx] |
1536 | invlpg [ebx] |
1539 | invlpg [ebx+0x10000] |
1537 | invlpg [ebx+0x10000] |
1540 | add eax, 0x1000 |
1538 | add eax, 0x1000 |
1541 | add ebx, 0x1000 |
1539 | add ebx, 0x1000 |
1542 | add edi, 4 |
1540 | add edi, 4 |
1543 | dec ecx |
1541 | dec ecx |
1544 | jnz @B |
1542 | jnz @B |
1545 | 1543 | ||
1546 | mov eax, [buf_ptr] |
1544 | mov eax, [buf_ptr] |
1547 | pop edi |
1545 | pop edi |
1548 | pop ebx |
1546 | pop ebx |
1549 | ret |
1547 | ret |
1550 | .mm_fail: |
1548 | .mm_fail: |
1551 | stdcall free_kernel_space, [buf_ptr] |
1549 | stdcall free_kernel_space, [buf_ptr] |
1552 | xor eax, eax |
1550 | xor eax, eax |
1553 | pop ebx |
1551 | pop ebx |
1554 | .fail: |
1552 | .fail: |
1555 | ret |
1553 | ret |
1556 | endp |
1554 | endp |
1557 | 1555 | ||
1558 | 1556 | ||
1559 | align 4 |
1557 | align 4 |
1560 | proc print_mem |
1558 | proc print_mem |
1561 | mov edi, BOOT_VAR + 0x9104 |
1559 | mov edi, BOOT_VAR + 0x9104 |
1562 | mov ecx, [edi-4] |
1560 | mov ecx, [edi-4] |
1563 | test ecx, ecx |
1561 | test ecx, ecx |
1564 | jz .done |
1562 | jz .done |
1565 | 1563 | ||
1566 | @@: |
1564 | @@: |
1567 | mov eax, [edi] |
1565 | mov eax, [edi] |
1568 | mov edx, [edi+4] |
1566 | mov edx, [edi+4] |
1569 | add eax, [edi+8] |
1567 | add eax, [edi+8] |
1570 | adc edx, [edi+12] |
1568 | adc edx, [edi+12] |
1571 | 1569 | ||
1572 | DEBUGF 1, "K : E820 %x%x - %x%x type %d\n", \ |
1570 | DEBUGF 1, "K : E820 %x%x - %x%x type %d\n", \ |
1573 | [edi+4], [edi],\ |
1571 | [edi+4], [edi],\ |
1574 | edx, eax, [edi+16] |
1572 | edx, eax, [edi+16] |
1575 | add edi, 20 |
1573 | add edi, 20 |
1576 | dec ecx |
1574 | dec ecx |
1577 | jnz @b |
1575 | jnz @b |
1578 | .done: |
1576 | .done: |
1579 | ret |
1577 | ret |
1580 | endp0>>=> |
1578 | endp0>>=> |