Rev 5596 | Only display areas with differences | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
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1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
2 | ;; ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2015. 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: 5596 $ |
8 | $Revision: 6339 $ |
9 | 9 | ||
10 | 10 | ||
11 | struct MEM_BLOCK |
11 | struct MEM_BLOCK |
12 | list LHEAD |
12 | list LHEAD |
13 | next_block dd ? ;+8 |
13 | next_block dd ? ;+8 |
14 | prev_block dd ? ;+4 |
14 | prev_block dd ? ;+4 |
15 | base dd ? ;+16 |
15 | base dd ? ;+16 |
16 | size dd ? ;+20 |
16 | size dd ? ;+20 |
17 | flags dd ? ;+24 |
17 | flags dd ? ;+24 |
18 | handle dd ? ;+28 |
18 | handle dd ? ;+28 |
19 | ends |
19 | ends |
20 | 20 | ||
21 | FREE_BLOCK equ 4 |
21 | FREE_BLOCK equ 4 |
22 | USED_BLOCK equ 8 |
22 | USED_BLOCK equ 8 |
23 | DONT_FREE_BLOCK equ 10h |
23 | DONT_FREE_BLOCK equ 10h |
24 | 24 | ||
25 | 25 | ||
26 | block_next equ MEM_BLOCK.next_block |
26 | block_next equ MEM_BLOCK.next_block |
27 | block_prev equ MEM_BLOCK.prev_block |
27 | block_prev equ MEM_BLOCK.prev_block |
28 | list_fd equ MEM_BLOCK.list.next |
28 | list_fd equ MEM_BLOCK.list.next |
29 | list_bk equ MEM_BLOCK.list.prev |
29 | list_bk equ MEM_BLOCK.list.prev |
30 | block_base equ MEM_BLOCK.base |
30 | block_base equ MEM_BLOCK.base |
31 | block_size equ MEM_BLOCK.size |
31 | block_size equ MEM_BLOCK.size |
32 | block_flags equ MEM_BLOCK.flags |
32 | block_flags equ MEM_BLOCK.flags |
33 | 33 | ||
34 | macro calc_index op |
34 | macro calc_index op |
35 | { shr op, 12 |
35 | { shr op, 12 |
36 | dec op |
36 | dec op |
37 | cmp op, 63 |
37 | cmp op, 63 |
38 | jna @f |
38 | jna @f |
39 | mov op, 63 |
39 | mov op, 63 |
40 | @@: |
40 | @@: |
41 | } |
41 | } |
42 | 42 | ||
43 | align 4 |
43 | align 4 |
44 | md: |
44 | md: |
45 | .add_to_used: |
45 | .add_to_used: |
46 | mov eax, [esi+block_base] |
46 | mov eax, [esi+block_base] |
47 | mov ebx, [esi+block_base] |
47 | mov ebx, [esi+block_base] |
48 | shr ebx, 6 |
48 | shr ebx, 6 |
49 | add eax, ebx |
49 | add eax, ebx |
50 | shr ebx, 6 |
50 | shr ebx, 6 |
51 | add eax, ebx |
51 | add eax, ebx |
52 | shr eax, 12 |
52 | shr eax, 12 |
53 | and eax, 63 |
53 | and eax, 63 |
54 | inc [mem_hash_cnt+eax*4] |
54 | inc [mem_hash_cnt+eax*4] |
55 | 55 | ||
56 | lea ecx, [mem_used_list+eax*8] |
56 | lea ecx, [mem_used_list+eax*8] |
57 | list_add esi, ecx |
57 | list_add esi, ecx |
58 | mov [esi+block_flags], USED_BLOCK |
58 | mov [esi+block_flags], USED_BLOCK |
59 | mov eax, [esi+block_size] |
59 | mov eax, [esi+block_size] |
60 | sub [heap_free], eax |
60 | sub [heap_free], eax |
61 | ret |
61 | ret |
62 | align 4 |
62 | align 4 |
63 | .find_used: |
63 | .find_used: |
64 | mov ecx, eax |
64 | mov ecx, eax |
65 | mov ebx, eax |
65 | mov ebx, eax |
66 | shr ebx, 6 |
66 | shr ebx, 6 |
67 | add ecx, ebx |
67 | add ecx, ebx |
68 | shr ebx, 6 |
68 | shr ebx, 6 |
69 | add ecx, ebx |
69 | add ecx, ebx |
70 | shr ecx, 12 |
70 | shr ecx, 12 |
71 | and ecx, 63 |
71 | and ecx, 63 |
72 | 72 | ||
73 | lea ebx, [mem_used_list+ecx*8] |
73 | lea ebx, [mem_used_list+ecx*8] |
74 | mov esi, ebx |
74 | mov esi, ebx |
75 | .next: |
75 | .next: |
76 | mov esi, [esi+list_fd] |
76 | mov esi, [esi+list_fd] |
77 | cmp esi, ebx |
77 | cmp esi, ebx |
78 | je .fail |
78 | je .fail |
79 | 79 | ||
80 | cmp eax, [esi+block_base] |
80 | cmp eax, [esi+block_base] |
81 | jne .next |
81 | jne .next |
82 | 82 | ||
83 | ret |
83 | ret |
84 | .fail: |
84 | .fail: |
85 | xor esi, esi |
85 | xor esi, esi |
86 | ret |
86 | ret |
87 | 87 | ||
88 | align 4 |
88 | align 4 |
89 | .del_from_used: |
89 | .del_from_used: |
90 | call .find_used |
90 | call .find_used |
91 | test esi, esi |
91 | test esi, esi |
92 | jz .done |
92 | jz .done |
93 | 93 | ||
94 | cmp [esi+block_flags], USED_BLOCK |
94 | cmp [esi+block_flags], USED_BLOCK |
95 | jne .fatal |
95 | jne .fatal |
96 | 96 | ||
97 | dec [mem_hash_cnt+ecx*4] |
97 | dec [mem_hash_cnt+ecx*4] |
98 | list_del esi |
98 | list_del esi |
99 | .done: |
99 | .done: |
100 | ret |
100 | ret |
101 | .fatal: ;FIXME panic here |
101 | .fatal: ;FIXME panic here |
102 | xor esi, esi |
102 | xor esi, esi |
103 | ret |
103 | ret |
104 | 104 | ||
105 | ;Initial heap state |
105 | ;Initial heap state |
106 | ; |
106 | ; |
107 | ;+heap_size terminator USED_BLOCK |
107 | ;+heap_size terminator USED_BLOCK |
108 | ;+4096*MEM_BLOCK.sizeof free space FREE_BLOCK |
108 | ;+4096*MEM_BLOCK.sizeof free space FREE_BLOCK |
109 | ;HEAP_BASE heap_descriptors USED_BLOCK |
109 | ;HEAP_BASE heap_descriptors USED_BLOCK |
110 | ; |
110 | ; |
111 | 111 | ||
112 | align 4 |
112 | align 4 |
113 | proc init_kernel_heap |
113 | proc init_kernel_heap |
114 | 114 | ||
115 | mov ecx, 64 |
115 | mov ecx, 64 |
116 | mov edi, mem_block_list |
116 | mov edi, mem_block_list |
117 | @@: |
117 | @@: |
118 | mov eax, edi |
118 | mov eax, edi |
119 | stosd |
119 | stosd |
120 | stosd |
120 | stosd |
121 | loop @B |
121 | loop @B |
122 | 122 | ||
123 | mov ecx, 64 |
123 | mov ecx, 64 |
124 | mov edi, mem_used_list |
124 | mov edi, mem_used_list |
125 | @@: |
125 | @@: |
126 | mov eax, edi |
126 | mov eax, edi |
127 | stosd |
127 | stosd |
128 | stosd |
128 | stosd |
129 | loop @B |
129 | loop @B |
130 | 130 | ||
131 | stdcall alloc_pages, dword 32 |
131 | stdcall alloc_pages, dword 32 |
132 | 132 | ||
133 | or eax, PG_SWR |
133 | or eax, PG_SWR |
134 | mov ebx, HEAP_BASE |
134 | mov ebx, HEAP_BASE |
135 | mov ecx, 32 |
135 | mov ecx, 32 |
136 | call commit_pages |
136 | call commit_pages |
137 | 137 | ||
138 | mov edi, HEAP_BASE ;descriptors |
138 | mov edi, HEAP_BASE ;descriptors |
139 | mov ebx, HEAP_BASE+sizeof.MEM_BLOCK ;free space |
139 | mov ebx, HEAP_BASE+sizeof.MEM_BLOCK ;free space |
140 | mov ecx, HEAP_BASE+sizeof.MEM_BLOCK*2 ;terminator |
140 | mov ecx, HEAP_BASE+sizeof.MEM_BLOCK*2 ;terminator |
141 | 141 | ||
142 | xor eax, eax |
142 | xor eax, eax |
143 | mov [edi+block_next], ebx |
143 | mov [edi+block_next], ebx |
144 | mov [edi+block_prev], eax |
144 | mov [edi+block_prev], eax |
145 | mov [edi+list_fd], eax |
145 | mov [edi+list_fd], eax |
146 | mov [edi+list_bk], eax |
146 | mov [edi+list_bk], eax |
147 | mov [edi+block_base], HEAP_BASE |
147 | mov [edi+block_base], HEAP_BASE |
148 | mov [edi+block_size], 4096*sizeof.MEM_BLOCK |
148 | mov [edi+block_size], 4096*sizeof.MEM_BLOCK |
149 | mov [edi+block_flags], USED_BLOCK |
149 | mov [edi+block_flags], USED_BLOCK |
150 | 150 | ||
151 | mov [ecx+block_next], eax |
151 | mov [ecx+block_next], eax |
152 | mov [ecx+block_prev], ebx |
152 | mov [ecx+block_prev], ebx |
153 | mov [ecx+list_fd], eax |
153 | mov [ecx+list_fd], eax |
154 | mov [ecx+list_bk], eax |
154 | mov [ecx+list_bk], eax |
155 | mov [ecx+block_base], eax |
155 | mov [ecx+block_base], eax |
156 | mov [ecx+block_size], eax |
156 | mov [ecx+block_size], eax |
157 | mov [ecx+block_flags], USED_BLOCK |
157 | mov [ecx+block_flags], USED_BLOCK |
158 | 158 | ||
159 | mov [ebx+block_next], ecx |
159 | mov [ebx+block_next], ecx |
160 | mov [ebx+block_prev], edi |
160 | mov [ebx+block_prev], edi |
161 | mov [ebx+block_base], HEAP_BASE+4096*sizeof.MEM_BLOCK |
161 | mov [ebx+block_base], HEAP_BASE+4096*sizeof.MEM_BLOCK |
162 | 162 | ||
163 | mov ecx, [pg_data.kernel_pages] |
163 | mov ecx, [pg_data.kernel_pages] |
164 | shl ecx, 12 |
164 | shl ecx, 12 |
165 | sub ecx, HEAP_BASE-OS_BASE+4096*sizeof.MEM_BLOCK |
165 | sub ecx, HEAP_BASE-OS_BASE+4096*sizeof.MEM_BLOCK |
166 | mov [heap_size], ecx |
166 | mov [heap_size], ecx |
167 | mov [heap_free], ecx |
167 | mov [heap_free], ecx |
168 | mov [ebx+block_size], ecx |
168 | mov [ebx+block_size], ecx |
169 | mov [ebx+block_flags], FREE_BLOCK |
169 | mov [ebx+block_flags], FREE_BLOCK |
170 | 170 | ||
171 | mov [mem_block_mask], eax |
171 | mov [mem_block_mask], eax |
172 | mov [mem_block_mask+4], 0x80000000 |
172 | mov [mem_block_mask+4], 0x80000000 |
173 | 173 | ||
174 | mov ecx, mem_block_list+63*8 |
174 | mov ecx, mem_block_list+63*8 |
175 | list_add ebx, ecx |
175 | list_add ebx, ecx |
176 | 176 | ||
177 | mov ecx, 4096-3-1 |
177 | mov ecx, 4096-3-1 |
178 | mov eax, HEAP_BASE+sizeof.MEM_BLOCK*4 |
178 | mov eax, HEAP_BASE+sizeof.MEM_BLOCK*4 |
179 | 179 | ||
180 | mov [next_memblock], HEAP_BASE+sizeof.MEM_BLOCK *3 |
180 | mov [next_memblock], HEAP_BASE+sizeof.MEM_BLOCK *3 |
181 | @@: |
181 | @@: |
182 | mov [eax-sizeof.MEM_BLOCK], eax |
182 | mov [eax-sizeof.MEM_BLOCK], eax |
183 | add eax, sizeof.MEM_BLOCK |
183 | add eax, sizeof.MEM_BLOCK |
184 | loop @B |
184 | loop @B |
185 | 185 | ||
186 | mov [eax-sizeof.MEM_BLOCK], dword 0 |
186 | mov [eax-sizeof.MEM_BLOCK], dword 0 |
187 | 187 | ||
188 | mov ecx, heap_mutex |
188 | mov ecx, heap_mutex |
189 | call mutex_init |
189 | call mutex_init |
190 | mov [heap_blocks], 4094 |
190 | mov [heap_blocks], 4094 |
191 | mov [free_blocks], 4093 |
191 | mov [free_blocks], 4093 |
192 | ret |
192 | ret |
193 | endp |
193 | endp |
194 | 194 | ||
195 | ; param |
195 | ; param |
196 | ; eax= required size |
196 | ; eax= required size |
197 | ; |
197 | ; |
198 | ; retval |
198 | ; retval |
199 | ; edi= memory block descriptor |
199 | ; edi= memory block descriptor |
200 | ; ebx= descriptor index |
200 | ; ebx= descriptor index |
201 | 201 | ||
202 | align 4 |
202 | align 4 |
203 | get_small_block: |
203 | get_small_block: |
204 | mov ecx, eax |
204 | mov ecx, eax |
205 | shr ecx, 12 |
205 | shr ecx, 12 |
206 | dec ecx |
206 | dec ecx |
207 | cmp ecx, 63 |
207 | cmp ecx, 63 |
208 | jle .get_index |
208 | jle .get_index |
209 | mov ecx, 63 |
209 | mov ecx, 63 |
210 | .get_index: |
210 | .get_index: |
211 | lea esi, [mem_block_mask] |
211 | lea esi, [mem_block_mask] |
212 | xor ebx, ebx |
212 | xor ebx, ebx |
213 | or edx, -1 |
213 | or edx, -1 |
214 | 214 | ||
215 | cmp ecx, 32 |
215 | cmp ecx, 32 |
216 | jb .bit_test |
216 | jb .bit_test |
217 | 217 | ||
218 | sub ecx, 32 |
218 | sub ecx, 32 |
219 | add ebx, 32 |
219 | add ebx, 32 |
220 | add esi, 4 |
220 | add esi, 4 |
221 | .bit_test: |
221 | .bit_test: |
222 | shl edx, cl |
222 | shl edx, cl |
223 | and edx, [esi] |
223 | and edx, [esi] |
224 | .find: |
224 | .find: |
225 | bsf edi, edx |
225 | bsf edi, edx |
226 | jz .high_mask |
226 | jz .high_mask |
227 | add ebx, edi |
227 | add ebx, edi |
228 | lea ecx, [mem_block_list+ebx*8] |
228 | lea ecx, [mem_block_list+ebx*8] |
229 | mov edi, ecx |
229 | mov edi, ecx |
230 | .next: |
230 | .next: |
231 | mov edi, [edi+list_fd] |
231 | mov edi, [edi+list_fd] |
232 | cmp edi, ecx |
232 | cmp edi, ecx |
233 | je .err |
233 | je .err |
234 | cmp eax, [edi+block_size] |
234 | cmp eax, [edi+block_size] |
235 | ja .next |
235 | ja .next |
236 | ret |
236 | ret |
237 | .err: |
237 | .err: |
238 | xor edi, edi |
238 | xor edi, edi |
239 | ret |
239 | ret |
240 | 240 | ||
241 | .high_mask: |
241 | .high_mask: |
242 | add esi, 4 |
242 | add esi, 4 |
243 | cmp esi, mem_block_mask+8 |
243 | cmp esi, mem_block_mask+8 |
244 | jae .err |
244 | jae .err |
245 | add ebx, 32 |
245 | add ebx, 32 |
246 | mov edx, [esi] |
246 | mov edx, [esi] |
247 | jmp .find |
247 | jmp .find |
248 | 248 | ||
249 | 249 | ||
250 | align 4 |
250 | align 4 |
251 | free_mem_block: |
251 | free_mem_block: |
252 | mov ebx, [next_memblock] |
252 | mov ebx, [next_memblock] |
253 | mov [eax], ebx |
253 | mov [eax], ebx |
254 | mov [next_memblock], eax |
254 | mov [next_memblock], eax |
255 | xor ebx, ebx |
255 | xor ebx, ebx |
256 | 256 | ||
257 | mov dword [eax+4], ebx |
257 | mov dword [eax+4], ebx |
258 | mov dword [eax+8], ebx |
258 | mov dword [eax+8], ebx |
259 | mov dword [eax+12], ebx |
259 | mov dword [eax+12], ebx |
260 | mov dword [eax+16], ebx |
260 | mov dword [eax+16], ebx |
261 | ; mov dword [eax+20], 0 ;don't clear block size |
261 | ; mov dword [eax+20], 0 ;don't clear block size |
262 | mov dword [eax+24], ebx |
262 | mov dword [eax+24], ebx |
263 | mov dword [eax+28], ebx |
263 | mov dword [eax+28], ebx |
264 | inc [free_blocks] |
264 | inc [free_blocks] |
265 | ret |
265 | ret |
266 | 266 | ||
267 | align 4 |
267 | align 4 |
268 | proc alloc_kernel_space stdcall, size:dword |
268 | proc alloc_kernel_space stdcall, size:dword |
269 | local block_ind:DWORD |
269 | local block_ind:DWORD |
270 | 270 | ||
271 | push ebx |
271 | push ebx |
272 | push esi |
272 | push esi |
273 | push edi |
273 | push edi |
274 | 274 | ||
275 | mov eax, [size] |
275 | mov eax, [size] |
276 | add eax, 4095 |
276 | add eax, 4095 |
277 | and eax, not 4095 |
277 | and eax, not 4095 |
278 | mov [size], eax |
278 | mov [size], eax |
279 | 279 | ||
280 | cmp eax, [heap_free] |
280 | cmp eax, [heap_free] |
281 | ja .error |
281 | ja .error |
282 | 282 | ||
283 | spin_lock_irqsave heap_mutex |
283 | spin_lock_irqsave heap_mutex |
284 | 284 | ||
285 | mov eax, [size] |
285 | mov eax, [size] |
286 | 286 | ||
287 | call get_small_block ; eax |
287 | call get_small_block ; eax |
288 | test edi, edi |
288 | test edi, edi |
289 | jz .error_unlock |
289 | jz .error_unlock |
290 | 290 | ||
291 | cmp [edi+block_flags], FREE_BLOCK |
291 | cmp [edi+block_flags], FREE_BLOCK |
292 | jne .error_unlock |
292 | jne .error_unlock |
293 | 293 | ||
294 | mov [block_ind], ebx ;index of allocated block |
294 | mov [block_ind], ebx ;index of allocated block |
295 | 295 | ||
296 | mov eax, [edi+block_size] |
296 | mov eax, [edi+block_size] |
297 | cmp eax, [size] |
297 | cmp eax, [size] |
298 | je .m_eq_size |
298 | je .m_eq_size |
299 | 299 | ||
300 | mov esi, [next_memblock] ;new memory block |
300 | mov esi, [next_memblock] ;new memory block |
301 | test esi, esi |
301 | test esi, esi |
302 | jz .error_unlock |
302 | jz .error_unlock |
303 | 303 | ||
304 | dec [free_blocks] |
304 | dec [free_blocks] |
305 | mov eax, [esi] |
305 | mov eax, [esi] |
306 | mov [next_memblock], eax |
306 | mov [next_memblock], eax |
307 | 307 | ||
308 | mov [esi+block_next], edi |
308 | mov [esi+block_next], edi |
309 | mov eax, [edi+block_prev] |
309 | mov eax, [edi+block_prev] |
310 | mov [esi+block_prev], eax |
310 | mov [esi+block_prev], eax |
311 | mov [edi+block_prev], esi |
311 | mov [edi+block_prev], esi |
312 | mov [esi+list_fd], 0 |
312 | mov [esi+list_fd], 0 |
313 | mov [esi+list_bk], 0 |
313 | mov [esi+list_bk], 0 |
314 | mov [eax+block_next], esi |
314 | mov [eax+block_next], esi |
315 | 315 | ||
316 | mov ebx, [edi+block_base] |
316 | mov ebx, [edi+block_base] |
317 | mov [esi+block_base], ebx |
317 | mov [esi+block_base], ebx |
318 | mov edx, [size] |
318 | mov edx, [size] |
319 | mov [esi+block_size], edx |
319 | mov [esi+block_size], edx |
320 | add [edi+block_base], edx |
320 | add [edi+block_base], edx |
321 | sub [edi+block_size], edx |
321 | sub [edi+block_size], edx |
322 | 322 | ||
323 | mov eax, [edi+block_size] |
323 | mov eax, [edi+block_size] |
324 | calc_index eax |
324 | calc_index eax |
325 | cmp eax, [block_ind] |
325 | cmp eax, [block_ind] |
326 | je .add_used |
326 | je .add_used |
327 | 327 | ||
328 | list_del edi |
328 | list_del edi |
329 | 329 | ||
330 | mov ecx, [block_ind] |
330 | mov ecx, [block_ind] |
331 | lea edx, [mem_block_list+ecx*8] |
331 | lea edx, [mem_block_list+ecx*8] |
332 | cmp edx, [edx] |
332 | cmp edx, [edx] |
333 | jnz @f |
333 | jnz @f |
334 | btr [mem_block_mask], ecx |
334 | btr [mem_block_mask], ecx |
335 | @@: |
335 | @@: |
336 | bts [mem_block_mask], eax |
336 | bts [mem_block_mask], eax |
337 | lea edx, [mem_block_list+eax*8] ;edx= list head |
337 | lea edx, [mem_block_list+eax*8] ;edx= list head |
338 | list_add edi, edx |
338 | list_add edi, edx |
339 | .add_used: |
339 | .add_used: |
340 | 340 | ||
341 | call md.add_to_used |
341 | call md.add_to_used |
342 | 342 | ||
343 | spin_unlock_irqrestore heap_mutex |
343 | spin_unlock_irqrestore heap_mutex |
344 | mov eax, [esi+block_base] |
344 | mov eax, [esi+block_base] |
345 | pop edi |
345 | pop edi |
346 | pop esi |
346 | pop esi |
347 | pop ebx |
347 | pop ebx |
348 | ret |
348 | ret |
349 | 349 | ||
350 | .m_eq_size: |
350 | .m_eq_size: |
351 | list_del edi |
351 | list_del edi |
352 | lea edx, [mem_block_list+ebx*8] |
352 | lea edx, [mem_block_list+ebx*8] |
353 | cmp edx, [edx] |
353 | cmp edx, [edx] |
354 | jnz @f |
354 | jnz @f |
355 | btr [mem_block_mask], ebx |
355 | btr [mem_block_mask], ebx |
356 | @@: |
356 | @@: |
357 | mov esi, edi |
357 | mov esi, edi |
358 | jmp .add_used |
358 | jmp .add_used |
359 | 359 | ||
360 | .error_unlock: |
360 | .error_unlock: |
361 | spin_unlock_irqrestore heap_mutex |
361 | spin_unlock_irqrestore heap_mutex |
362 | .error: |
362 | .error: |
363 | xor eax, eax |
363 | xor eax, eax |
364 | pop edi |
364 | pop edi |
365 | pop esi |
365 | pop esi |
366 | pop ebx |
366 | pop ebx |
367 | ret |
367 | ret |
368 | endp |
368 | endp |
369 | 369 | ||
370 | align 4 |
370 | align 4 |
371 | proc free_kernel_space stdcall uses ebx ecx edx esi edi, base:dword |
371 | proc free_kernel_space stdcall uses ebx ecx edx esi edi, base:dword |
372 | 372 | ||
373 | spin_lock_irqsave heap_mutex |
373 | spin_lock_irqsave heap_mutex |
374 | 374 | ||
375 | mov eax, [base] |
375 | mov eax, [base] |
376 | 376 | ||
377 | call md.del_from_used |
377 | call md.del_from_used |
378 | test esi, esi |
378 | test esi, esi |
379 | jz .fail |
379 | jz .fail |
380 | 380 | ||
381 | mov eax, [esi+block_size] |
381 | mov eax, [esi+block_size] |
382 | add [heap_free], eax |
382 | add [heap_free], eax |
383 | 383 | ||
384 | mov edi, [esi+block_next] |
384 | mov edi, [esi+block_next] |
385 | cmp [edi+block_flags], FREE_BLOCK |
385 | cmp [edi+block_flags], FREE_BLOCK |
386 | jne .prev |
386 | jne .prev |
387 | 387 | ||
388 | list_del edi |
388 | list_del edi |
389 | 389 | ||
390 | mov edx, [edi+block_next] |
390 | mov edx, [edi+block_next] |
391 | mov [esi+block_next], edx |
391 | mov [esi+block_next], edx |
392 | mov [edx+block_prev], esi |
392 | mov [edx+block_prev], esi |
393 | mov ecx, [edi+block_size] |
393 | mov ecx, [edi+block_size] |
394 | add [esi+block_size], ecx |
394 | add [esi+block_size], ecx |
395 | 395 | ||
396 | calc_index ecx |
396 | calc_index ecx |
397 | 397 | ||
398 | lea edx, [mem_block_list+ecx*8] |
398 | lea edx, [mem_block_list+ecx*8] |
399 | cmp edx, [edx] |
399 | cmp edx, [edx] |
400 | jne @F |
400 | jne @F |
401 | btr [mem_block_mask], ecx |
401 | btr [mem_block_mask], ecx |
402 | @@: |
402 | @@: |
403 | mov eax, edi |
403 | mov eax, edi |
404 | call free_mem_block |
404 | call free_mem_block |
405 | .prev: |
405 | .prev: |
406 | mov edi, [esi+block_prev] |
406 | mov edi, [esi+block_prev] |
407 | cmp [edi+block_flags], FREE_BLOCK |
407 | cmp [edi+block_flags], FREE_BLOCK |
408 | jne .insert |
408 | jne .insert |
409 | 409 | ||
410 | mov edx, [esi+block_next] |
410 | mov edx, [esi+block_next] |
411 | mov [edi+block_next], edx |
411 | mov [edi+block_next], edx |
412 | mov [edx+block_prev], edi |
412 | mov [edx+block_prev], edi |
413 | 413 | ||
414 | mov eax, esi |
414 | mov eax, esi |
415 | call free_mem_block |
415 | call free_mem_block |
416 | 416 | ||
417 | mov ecx, [edi+block_size] |
417 | mov ecx, [edi+block_size] |
418 | mov eax, [esi+block_size] |
418 | mov eax, [esi+block_size] |
419 | add eax, ecx |
419 | add eax, ecx |
420 | mov [edi+block_size], eax |
420 | mov [edi+block_size], eax |
421 | 421 | ||
422 | calc_index eax ;new index |
422 | calc_index eax ;new index |
423 | calc_index ecx ;old index |
423 | calc_index ecx ;old index |
424 | cmp eax, ecx |
424 | cmp eax, ecx |
425 | je .m_eq |
425 | je .m_eq |
426 | 426 | ||
427 | push ecx |
427 | push ecx |
428 | list_del edi |
428 | list_del edi |
429 | pop ecx |
429 | pop ecx |
430 | 430 | ||
431 | lea edx, [mem_block_list+ecx*8] |
431 | lea edx, [mem_block_list+ecx*8] |
432 | cmp edx, [edx] |
432 | cmp edx, [edx] |
433 | jne .add_block |
433 | jne .add_block |
434 | btr [mem_block_mask], ecx |
434 | btr [mem_block_mask], ecx |
435 | 435 | ||
436 | .add_block: |
436 | .add_block: |
437 | bts [mem_block_mask], eax |
437 | bts [mem_block_mask], eax |
438 | lea edx, [mem_block_list+eax*8] |
438 | lea edx, [mem_block_list+eax*8] |
439 | list_add edi, edx |
439 | list_add edi, edx |
440 | .m_eq: |
440 | .m_eq: |
441 | spin_unlock_irqrestore heap_mutex |
441 | spin_unlock_irqrestore heap_mutex |
442 | xor eax, eax |
442 | xor eax, eax |
443 | not eax |
443 | not eax |
444 | ret |
444 | ret |
445 | .insert: |
445 | .insert: |
446 | mov [esi+block_flags], FREE_BLOCK |
446 | mov [esi+block_flags], FREE_BLOCK |
447 | mov eax, [esi+block_size] |
447 | mov eax, [esi+block_size] |
448 | calc_index eax |
448 | calc_index eax |
449 | mov edi, esi |
449 | mov edi, esi |
450 | jmp .add_block |
450 | jmp .add_block |
451 | 451 | ||
452 | .fail: |
452 | .fail: |
453 | spin_unlock_irqrestore heap_mutex |
453 | spin_unlock_irqrestore heap_mutex |
454 | xor eax, eax |
454 | xor eax, eax |
455 | ret |
455 | ret |
456 | endp |
456 | endp |
457 | 457 | ||
458 | align 4 |
458 | align 4 |
459 | proc kernel_alloc stdcall, size:dword |
459 | proc kernel_alloc stdcall, size:dword |
460 | locals |
460 | locals |
461 | lin_addr dd ? |
461 | lin_addr dd ? |
462 | pages_count dd ? |
462 | pages_count dd ? |
463 | endl |
463 | endl |
464 | 464 | ||
465 | push ebx |
465 | push ebx |
466 | push edi |
466 | push edi |
467 | 467 | ||
468 | mov eax, [size] |
468 | mov eax, [size] |
469 | add eax, 4095 |
469 | add eax, 4095 |
470 | and eax, not 4095; |
470 | and eax, not 4095; |
471 | mov [size], eax |
471 | mov [size], eax |
472 | and eax, eax |
472 | and eax, eax |
473 | jz .err |
473 | jz .err |
474 | mov ebx, eax |
474 | mov ebx, eax |
475 | shr ebx, 12 |
475 | shr ebx, 12 |
476 | mov [pages_count], ebx |
476 | mov [pages_count], ebx |
477 | 477 | ||
478 | stdcall alloc_kernel_space, eax |
478 | stdcall alloc_kernel_space, eax |
479 | mov [lin_addr], eax |
479 | mov [lin_addr], eax |
480 | mov ebx, [pages_count] |
480 | mov ebx, [pages_count] |
481 | test eax, eax |
481 | test eax, eax |
482 | jz .err |
482 | jz .err |
483 | 483 | ||
484 | mov edx, eax |
484 | mov edx, eax |
485 | 485 | ||
486 | shr ebx, 3 |
486 | shr ebx, 3 |
487 | jz .tail |
487 | jz .tail |
488 | 488 | ||
489 | shl ebx, 3 |
489 | shl ebx, 3 |
490 | stdcall alloc_pages, ebx |
490 | stdcall alloc_pages, ebx |
491 | test eax, eax |
491 | test eax, eax |
492 | jz .err |
492 | jz .err |
493 | 493 | ||
494 | mov ecx, ebx |
494 | mov ecx, ebx |
495 | or eax, PG_GLOBAL+PG_SWR |
495 | or eax, PG_GLOBAL+PG_SWR |
496 | mov ebx, [lin_addr] |
496 | mov ebx, [lin_addr] |
497 | call commit_pages |
497 | call commit_pages |
498 | 498 | ||
499 | mov edx, ebx ; this dirty hack |
499 | mov edx, ebx ; this dirty hack |
500 | .tail: |
500 | .tail: |
501 | mov ebx, [pages_count] |
501 | mov ebx, [pages_count] |
502 | and ebx, 7 |
502 | and ebx, 7 |
503 | jz .end |
503 | jz .end |
504 | @@: |
504 | @@: |
505 | call alloc_page |
505 | call alloc_page |
506 | test eax, eax |
506 | test eax, eax |
507 | jz .err |
507 | jz .err |
508 | 508 | ||
509 | stdcall map_page, edx, eax, dword (PG_GLOBAL+PG_SWR) |
509 | stdcall map_page, edx, eax, dword (PG_GLOBAL+PG_SWR) |
510 | add edx, 0x1000 |
510 | add edx, 0x1000 |
511 | dec ebx |
511 | dec ebx |
512 | jnz @B |
512 | jnz @B |
513 | .end: |
513 | .end: |
514 | mov eax, [lin_addr] |
514 | mov eax, [lin_addr] |
515 | pop edi |
515 | pop edi |
516 | pop ebx |
516 | pop ebx |
517 | ret |
517 | ret |
518 | .err: |
518 | .err: |
519 | xor eax, eax |
519 | xor eax, eax |
520 | pop edi |
520 | pop edi |
521 | pop ebx |
521 | pop ebx |
522 | ret |
522 | ret |
523 | endp |
523 | endp |
524 | 524 | ||
525 | align 4 |
525 | align 4 |
526 | proc kernel_free stdcall, base:dword |
526 | proc kernel_free stdcall, base:dword |
527 | 527 | ||
528 | push ebx esi |
528 | push ebx esi |
529 | 529 | ||
530 | spin_lock_irqsave heap_mutex |
530 | spin_lock_irqsave heap_mutex |
531 | 531 | ||
532 | mov eax, [base] |
532 | mov eax, [base] |
533 | call md.find_used |
533 | call md.find_used |
534 | 534 | ||
535 | cmp [esi+block_flags], USED_BLOCK |
535 | cmp [esi+block_flags], USED_BLOCK |
536 | jne .fail |
536 | jne .fail |
537 | 537 | ||
538 | spin_unlock_irqrestore heap_mutex |
538 | spin_unlock_irqrestore heap_mutex |
539 | 539 | ||
540 | mov eax, [esi+block_base] |
540 | mov eax, [esi+block_base] |
541 | mov ecx, [esi+block_size] |
541 | mov ecx, [esi+block_size] |
542 | shr ecx, 12 |
542 | shr ecx, 12 |
543 | call release_pages ;eax, ecx |
543 | call release_pages ;eax, ecx |
544 | stdcall free_kernel_space, [base] |
544 | stdcall free_kernel_space, [base] |
545 | pop esi ebx |
545 | pop esi ebx |
546 | ret |
546 | ret |
547 | .fail: |
547 | .fail: |
548 | spin_unlock_irqrestore heap_mutex |
548 | spin_unlock_irqrestore heap_mutex |
549 | xor eax, eax |
549 | xor eax, eax |
550 | pop esi ebx |
550 | pop esi ebx |
551 | ret |
551 | ret |
552 | endp |
552 | endp |
553 | 553 | ||
554 | restore block_next |
554 | restore block_next |
555 | restore block_prev |
555 | restore block_prev |
556 | restore block_list |
556 | restore block_list |
557 | restore block_base |
557 | restore block_base |
558 | restore block_size |
558 | restore block_size |
559 | restore block_flags |
559 | restore block_flags |
560 | 560 | ||
561 | ;;;;;;;;;;;;;; USER HEAP ;;;;;;;;;;;;;;;;; |
561 | ;;;;;;;;;;;;;; USER HEAP ;;;;;;;;;;;;;;;;; |
562 | 562 | ||
563 | HEAP_TOP equ 0x80000000 |
563 | HEAP_TOP equ 0x80000000 |
564 | 564 | ||
565 | align 4 |
565 | align 4 |
566 | proc init_heap |
566 | proc init_heap |
567 | 567 | ||
568 | mov ebx, [current_process] |
568 | mov ebx, [current_process] |
569 | mov eax, [ebx+PROC.heap_top] |
569 | mov eax, [ebx+PROC.heap_top] |
570 | test eax, eax |
570 | test eax, eax |
571 | jz @F |
571 | jz @F |
572 | sub eax, [ebx+PROC.heap_base] |
572 | sub eax, [ebx+PROC.heap_base] |
573 | sub eax, PAGE_SIZE |
573 | sub eax, PAGE_SIZE |
574 | ret |
574 | ret |
575 | @@: |
575 | @@: |
576 | lea ecx, [ebx+PROC.heap_lock] |
576 | lea ecx, [ebx+PROC.heap_lock] |
577 | call mutex_init |
577 | call mutex_init |
578 | 578 | ||
579 | mov esi, [ebx+PROC.mem_used] |
579 | mov esi, [ebx+PROC.mem_used] |
580 | add esi, 4095 |
580 | add esi, 4095 |
581 | and esi, not 4095 |
581 | and esi, not 4095 |
582 | mov [ebx+PROC.mem_used], esi |
582 | mov [ebx+PROC.mem_used], esi |
583 | mov eax, HEAP_TOP |
583 | mov eax, HEAP_TOP |
584 | mov [ebx+PROC.heap_base], esi |
584 | mov [ebx+PROC.heap_base], esi |
585 | mov [ebx+PROC.heap_top], eax |
585 | mov [ebx+PROC.heap_top], eax |
586 | 586 | ||
587 | sub eax, esi |
587 | sub eax, esi |
588 | shr esi, 10 |
588 | shr esi, 9 |
589 | mov ecx, eax |
589 | mov ecx, eax |
590 | sub eax, PAGE_SIZE |
590 | sub eax, PAGE_SIZE |
591 | or ecx, FREE_BLOCK |
591 | or ecx, FREE_BLOCK |
592 | mov [page_tabs+esi], ecx |
592 | mov [page_tabs+esi], ecx |
593 | ret |
593 | ret |
594 | endp |
594 | endp |
595 | 595 | ||
596 | align 4 |
596 | align 4 |
597 | proc user_alloc stdcall, alloc_size:dword |
597 | proc user_alloc stdcall, alloc_size:dword |
598 | 598 | ||
599 | push ebx |
599 | push ebx |
600 | push esi |
600 | push esi |
601 | push edi |
601 | push edi |
602 | 602 | ||
603 | mov ebx, [current_process] |
603 | mov ebx, [current_process] |
604 | lea ecx, [ebx+PROC.heap_lock] |
604 | lea ecx, [ebx+PROC.heap_lock] |
605 | call mutex_lock |
605 | call mutex_lock |
606 | 606 | ||
607 | mov ecx, [alloc_size] |
607 | mov ecx, [alloc_size] |
608 | add ecx, (4095+PAGE_SIZE) |
608 | add ecx, (4095+PAGE_SIZE) |
609 | and ecx, not 4095 |
609 | and ecx, not 4095 |
610 | 610 | ||
611 | mov esi, dword [ebx+PROC.heap_base] ; heap_base |
611 | mov esi, dword [ebx+PROC.heap_base] ; heap_base |
612 | mov edi, dword [ebx+PROC.heap_top] ; heap_top |
612 | mov edi, dword [ebx+PROC.heap_top] ; heap_top |
613 | .scan: |
613 | .scan: |
614 | cmp esi, edi |
614 | cmp esi, edi |
615 | jae .m_exit |
615 | jae .m_exit |
616 | 616 | ||
617 | mov ebx, esi |
617 | mov ebx, esi |
618 | shr ebx, 12 |
618 | shr ebx, 12 |
619 | mov eax, [page_tabs+ebx*4] |
619 | mov eax, [page_tabs+ebx*8] |
620 | test al, FREE_BLOCK |
620 | test al, FREE_BLOCK |
621 | jz .test_used |
621 | jz .test_used |
622 | and eax, 0xFFFFF000 |
622 | and eax, 0xFFFFF000 |
623 | cmp eax, ecx ;alloc_size |
623 | cmp eax, ecx ;alloc_size |
624 | jb .m_next |
624 | jb .m_next |
625 | jz @f |
625 | jz @f |
626 | 626 | ||
627 | lea edx, [esi+ecx] |
627 | lea edx, [esi+ecx] |
628 | sub eax, ecx |
628 | sub eax, ecx |
629 | or al, FREE_BLOCK |
629 | or al, FREE_BLOCK |
630 | shr edx, 12 |
630 | shr edx, 12 |
631 | mov [page_tabs+edx*4], eax |
631 | mov [page_tabs+edx*8], eax |
632 | @@: |
632 | @@: |
633 | or ecx, USED_BLOCK |
633 | or ecx, USED_BLOCK |
634 | mov [page_tabs+ebx*4], ecx |
634 | mov [page_tabs+ebx*8], ecx |
635 | shr ecx, 12 |
635 | shr ecx, 12 |
636 | inc ebx |
636 | inc ebx |
637 | dec ecx |
637 | dec ecx |
638 | jz .no |
638 | jz .no |
639 | @@: |
639 | @@: |
640 | mov dword [page_tabs+ebx*4], 2 |
640 | mov dword [page_tabs+ebx*8], 2 |
641 | inc ebx |
641 | inc ebx |
642 | dec ecx |
642 | dec ecx |
643 | jnz @B |
643 | jnz @B |
644 | .no: |
644 | .no: |
645 | 645 | ||
646 | mov edx, [current_process] |
646 | mov edx, [current_process] |
647 | mov ebx, [alloc_size] |
647 | mov ebx, [alloc_size] |
648 | add ebx, 0xFFF |
648 | add ebx, 0xFFF |
649 | and ebx, not 0xFFF |
649 | and ebx, not 0xFFF |
650 | add [edx+PROC.mem_used], ebx |
650 | add [edx+PROC.mem_used], ebx |
651 | 651 | ||
652 | lea ecx, [edx+PROC.heap_lock] |
652 | lea ecx, [edx+PROC.heap_lock] |
653 | call mutex_unlock |
653 | call mutex_unlock |
654 | 654 | ||
655 | lea eax, [esi+4096] |
655 | lea eax, [esi+4096] |
656 | 656 | ||
657 | pop edi |
657 | pop edi |
658 | pop esi |
658 | pop esi |
659 | pop ebx |
659 | pop ebx |
660 | ret |
660 | ret |
661 | .test_used: |
661 | .test_used: |
662 | test al, USED_BLOCK |
662 | test al, USED_BLOCK |
663 | jz .m_exit |
663 | jz .m_exit |
664 | 664 | ||
665 | and eax, 0xFFFFF000 |
665 | and eax, 0xFFFFF000 |
666 | .m_next: |
666 | .m_next: |
667 | add esi, eax |
667 | add esi, eax |
668 | jmp .scan |
668 | jmp .scan |
669 | .m_exit: |
669 | .m_exit: |
670 | mov ecx, [current_process] |
670 | mov ecx, [current_process] |
671 | lea ecx, [ecx+PROC.heap_lock] |
671 | lea ecx, [ecx+PROC.heap_lock] |
672 | call mutex_unlock |
672 | call mutex_unlock |
673 | 673 | ||
674 | xor eax, eax |
674 | xor eax, eax |
675 | pop edi |
675 | pop edi |
676 | pop esi |
676 | pop esi |
677 | pop ebx |
677 | pop ebx |
678 | ret |
678 | ret |
679 | endp |
679 | endp |
680 | 680 | ||
681 | align 4 |
681 | align 4 |
682 | proc user_alloc_at stdcall, address:dword, alloc_size:dword |
682 | proc user_alloc_at stdcall, address:dword, alloc_size:dword |
683 | 683 | ||
684 | push ebx |
684 | push ebx |
685 | push esi |
685 | push esi |
686 | push edi |
686 | push edi |
687 | 687 | ||
688 | mov ebx, [current_process] |
688 | mov ebx, [current_process] |
689 | lea ecx, [ebx+PROC.heap_lock] |
689 | lea ecx, [ebx+PROC.heap_lock] |
690 | call mutex_lock |
690 | call mutex_lock |
691 | 691 | ||
692 | mov edx, [address] |
692 | mov edx, [address] |
693 | and edx, not 0xFFF |
693 | and edx, not 0xFFF |
694 | mov [address], edx |
694 | mov [address], edx |
695 | sub edx, 0x1000 |
695 | sub edx, 0x1000 |
696 | jb .error |
696 | jb .error |
697 | mov esi, [ebx+PROC.heap_base] |
697 | mov esi, [ebx+PROC.heap_base] |
698 | mov edi, [ebx+PROC.heap_top] |
698 | mov edi, [ebx+PROC.heap_top] |
699 | cmp edx, esi |
699 | cmp edx, esi |
700 | jb .error |
700 | jb .error |
701 | .scan: |
701 | .scan: |
702 | cmp esi, edi |
702 | cmp esi, edi |
703 | jae .error |
703 | jae .error |
704 | mov ebx, esi |
704 | mov ebx, esi |
705 | shr ebx, 12 |
705 | shr ebx, 12 |
706 | mov eax, [page_tabs+ebx*4] |
706 | mov eax, [page_tabs+ebx*8] |
707 | mov ecx, eax |
707 | mov ecx, eax |
708 | and ecx, 0xFFFFF000 |
708 | and ecx, 0xFFFFF000 |
709 | add ecx, esi |
709 | add ecx, esi |
710 | cmp edx, ecx |
710 | cmp edx, ecx |
711 | jb .found |
711 | jb .found |
712 | mov esi, ecx |
712 | mov esi, ecx |
713 | jmp .scan |
713 | jmp .scan |
714 | .error: |
714 | .error: |
715 | mov ecx, [current_process] |
715 | mov ecx, [current_process] |
716 | lea ecx, [ecx+PROC.heap_lock] |
716 | lea ecx, [ecx+PROC.heap_lock] |
717 | call mutex_unlock |
717 | call mutex_unlock |
718 | 718 | ||
719 | xor eax, eax |
719 | xor eax, eax |
720 | pop edi |
720 | pop edi |
721 | pop esi |
721 | pop esi |
722 | pop ebx |
722 | pop ebx |
723 | ret |
723 | ret |
724 | .found: |
724 | .found: |
725 | test al, FREE_BLOCK |
725 | test al, FREE_BLOCK |
726 | jz .error |
726 | jz .error |
727 | mov eax, ecx |
727 | mov eax, ecx |
728 | sub eax, edx |
728 | sub eax, edx |
729 | sub eax, 0x1000 |
729 | sub eax, 0x1000 |
730 | cmp eax, [alloc_size] |
730 | cmp eax, [alloc_size] |
731 | jb .error |
731 | jb .error |
732 | 732 | ||
733 | ; Here we have 1 big free block which includes requested area. |
733 | ; Here we have 1 big free block which includes requested area. |
734 | ; In general, 3 other blocks must be created instead: |
734 | ; In general, 3 other blocks must be created instead: |
735 | ; free at [esi, edx); |
735 | ; free at [esi, edx); |
736 | ; busy at [edx, edx+0x1000+ALIGN_UP(alloc_size,0x1000)); |
736 | ; busy at [edx, edx+0x1000+ALIGN_UP(alloc_size,0x1000)); |
737 | ; free at [edx+0x1000+ALIGN_UP(alloc_size,0x1000), ecx) |
737 | ; free at [edx+0x1000+ALIGN_UP(alloc_size,0x1000), ecx) |
738 | ; First or third block (or both) may be absent. |
738 | ; First or third block (or both) may be absent. |
739 | mov eax, edx |
739 | mov eax, edx |
740 | sub eax, esi |
740 | sub eax, esi |
741 | jz .nofirst |
741 | jz .nofirst |
742 | or al, FREE_BLOCK |
742 | or al, FREE_BLOCK |
743 | mov [page_tabs+ebx*4], eax |
743 | mov [page_tabs+ebx*8], eax |
744 | .nofirst: |
744 | .nofirst: |
745 | mov eax, [alloc_size] |
745 | mov eax, [alloc_size] |
746 | add eax, 0x1FFF |
746 | add eax, 0x1FFF |
747 | and eax, not 0xFFF |
747 | and eax, not 0xFFF |
748 | mov ebx, edx |
748 | mov ebx, edx |
749 | add edx, eax |
749 | add edx, eax |
750 | shr ebx, 12 |
750 | shr ebx, 12 |
751 | or al, USED_BLOCK |
751 | or al, USED_BLOCK |
752 | mov [page_tabs+ebx*4], eax |
752 | mov [page_tabs+ebx*8], eax |
753 | shr eax, 12 |
753 | shr eax, 12 |
754 | dec eax |
754 | dec eax |
755 | jz .second_nofill |
755 | jz .second_nofill |
756 | inc ebx |
756 | inc ebx |
757 | .fill: |
757 | .fill: |
758 | mov dword [page_tabs+ebx*4], 2 |
758 | mov dword [page_tabs+ebx*8], 2 |
759 | inc ebx |
759 | inc ebx |
760 | dec eax |
760 | dec eax |
761 | jnz .fill |
761 | jnz .fill |
762 | 762 | ||
763 | .second_nofill: |
763 | .second_nofill: |
764 | sub ecx, edx |
764 | sub ecx, edx |
765 | jz .nothird |
765 | jz .nothird |
766 | or cl, FREE_BLOCK |
766 | or cl, FREE_BLOCK |
767 | mov [page_tabs+ebx*4], ecx |
767 | mov [page_tabs+ebx*8], ecx |
768 | 768 | ||
769 | .nothird: |
769 | .nothird: |
770 | mov edx, [current_process] |
770 | mov edx, [current_process] |
771 | mov ebx, [alloc_size] |
771 | mov ebx, [alloc_size] |
772 | add ebx, 0xFFF |
772 | add ebx, 0xFFF |
773 | and ebx, not 0xFFF |
773 | and ebx, not 0xFFF |
774 | add [edx+PROC.mem_used], ebx |
774 | add [edx+PROC.mem_used], ebx |
775 | 775 | ||
776 | lea ecx, [edx+PROC.heap_lock] |
776 | lea ecx, [edx+PROC.heap_lock] |
777 | call mutex_unlock |
777 | call mutex_unlock |
778 | 778 | ||
779 | mov eax, [address] |
779 | mov eax, [address] |
780 | 780 | ||
781 | pop edi |
781 | pop edi |
782 | pop esi |
782 | pop esi |
783 | pop ebx |
783 | pop ebx |
784 | ret |
784 | ret |
785 | endp |
785 | endp |
786 | 786 | ||
787 | align 4 |
787 | align 4 |
788 | proc user_free stdcall, base:dword |
788 | proc user_free stdcall, base:dword |
789 | 789 | ||
790 | push esi |
790 | push esi |
791 | 791 | ||
792 | mov esi, [base] |
792 | mov esi, [base] |
793 | test esi, esi |
793 | test esi, esi |
794 | jz .fail |
794 | jz .fail |
795 | 795 | ||
796 | push ebx |
796 | push ebx |
797 | 797 | ||
798 | mov ebx, [current_process] |
798 | mov ebx, [current_process] |
799 | lea ecx, [ebx+PROC.heap_lock] |
799 | lea ecx, [ebx+PROC.heap_lock] |
800 | call mutex_lock |
800 | call mutex_lock |
801 | 801 | ||
802 | xor ebx, ebx |
802 | xor ebx, ebx |
803 | shr esi, 12 |
803 | shr esi, 12 |
804 | mov eax, [page_tabs+(esi-1)*4] |
804 | mov eax, [page_tabs+(esi-1)*8] |
805 | test al, USED_BLOCK |
805 | test al, USED_BLOCK |
806 | jz .cantfree |
806 | jz .cantfree |
807 | test al, DONT_FREE_BLOCK |
807 | test al, DONT_FREE_BLOCK |
808 | jnz .cantfree |
808 | jnz .cantfree |
809 | 809 | ||
810 | and eax, not 4095 |
810 | and eax, not 4095 |
811 | mov ecx, eax |
811 | mov ecx, eax |
812 | or al, FREE_BLOCK |
812 | or al, FREE_BLOCK |
813 | mov [page_tabs+(esi-1)*4], eax |
813 | mov [page_tabs+(esi-1)*8], eax |
814 | sub ecx, 4096 |
814 | sub ecx, 4096 |
815 | mov ebx, ecx |
815 | mov ebx, ecx |
816 | shr ecx, 12 |
816 | shr ecx, 12 |
817 | jz .released |
817 | jz .released |
818 | .release: |
818 | .release: |
819 | xor eax, eax |
819 | xor eax, eax |
820 | xchg eax, [page_tabs+esi*4] |
820 | xchg eax, [page_tabs+esi*8] |
821 | test al, 1 |
821 | test al, 1 |
822 | jz @F |
822 | jz @F |
823 | test eax, PG_SHARED |
823 | test eax, PG_SHARED |
824 | jnz @F |
824 | jnz @F |
825 | call free_page |
825 | call free_page |
826 | mov eax, esi |
826 | mov eax, esi |
827 | shl eax, 12 |
827 | shl eax, 12 |
828 | invlpg [eax] |
828 | invlpg [eax] |
829 | @@: |
829 | @@: |
830 | inc esi |
830 | inc esi |
831 | dec ecx |
831 | dec ecx |
832 | jnz .release |
832 | jnz .release |
833 | 833 | ||
834 | .released: |
834 | .released: |
835 | push edi |
835 | push edi |
836 | 836 | ||
837 | mov edx, [current_process] |
837 | mov edx, [current_process] |
838 | lea ecx, [edx+PROC.heap_lock] |
838 | lea ecx, [edx+PROC.heap_lock] |
839 | mov esi, dword [edx+PROC.heap_base] |
839 | mov esi, dword [edx+PROC.heap_base] |
840 | mov edi, dword [edx+PROC.heap_top] |
840 | mov edi, dword [edx+PROC.heap_top] |
841 | sub ebx, [edx+PROC.mem_used] |
841 | sub ebx, [edx+PROC.mem_used] |
842 | neg ebx |
842 | neg ebx |
843 | mov [edx+PROC.mem_used], ebx |
843 | mov [edx+PROC.mem_used], ebx |
844 | call user_normalize |
844 | call user_normalize |
845 | pop edi |
845 | pop edi |
846 | .exit: |
846 | .exit: |
847 | call mutex_unlock |
847 | call mutex_unlock |
848 | 848 | ||
849 | xor eax, eax |
849 | xor eax, eax |
850 | inc eax |
850 | inc eax |
851 | pop ebx |
851 | pop ebx |
852 | pop esi |
852 | pop esi |
853 | ret |
853 | ret |
854 | 854 | ||
855 | .cantfree: |
855 | .cantfree: |
856 | mov ecx, [current_process] |
856 | mov ecx, [current_process] |
857 | lea ecx, [ecx+PROC.heap_lock] |
857 | lea ecx, [ecx+PROC.heap_lock] |
858 | jmp .exit |
858 | jmp .exit |
859 | .fail: |
859 | .fail: |
860 | xor eax, eax |
860 | xor eax, eax |
861 | pop esi |
861 | pop esi |
862 | ret |
862 | ret |
863 | endp |
863 | endp |
864 | 864 | ||
865 | 865 | ||
866 | align 4 |
866 | align 4 |
867 | proc user_unmap stdcall, base:dword, offset:dword, size:dword |
867 | proc user_unmap stdcall, base:dword, offset:dword, size:dword |
868 | 868 | ||
869 | push ebx |
869 | push ebx |
870 | 870 | ||
871 | mov ebx, [base] ; must be valid pointer |
871 | mov ebx, [base] ; must be valid pointer |
872 | test ebx, ebx |
872 | test ebx, ebx |
873 | jz .error |
873 | jz .error |
874 | 874 | ||
875 | mov edx, [offset] ; check offset |
875 | mov edx, [offset] ; check offset |
876 | add edx, ebx ; must be below 2Gb app limit |
876 | add edx, ebx ; must be below 2Gb app limit |
877 | js .error |
877 | js .error |
878 | 878 | ||
879 | shr ebx, 12 ; chek block attributes |
879 | shr ebx, 12 ; chek block attributes |
880 | lea ebx, [page_tabs+ebx*4] |
880 | lea ebx, [page_tabs+ebx*8] |
881 | mov eax, [ebx-4] ; block attributes |
881 | mov eax, [ebx-4] ; block attributes |
882 | test al, USED_BLOCK |
882 | test al, USED_BLOCK |
883 | jz .error |
883 | jz .error |
884 | test al, DONT_FREE_BLOCK |
884 | test al, DONT_FREE_BLOCK |
885 | jnz .error |
885 | jnz .error |
886 | 886 | ||
887 | shr edx, 12 |
887 | shr edx, 12 |
888 | lea edx, [page_tabs+edx*4] ; unmap offset |
888 | lea edx, [page_tabs+edx*8] ; unmap offset |
889 | 889 | ||
890 | mov ecx, [size] |
890 | mov ecx, [size] |
891 | add ecx, 4095 |
891 | add ecx, 4095 |
892 | shr ecx, 12 ; unmap size in pages |
892 | shr ecx, 12 ; unmap size in pages |
893 | 893 | ||
894 | shr eax, 12 ; block size + 1 page |
894 | shr eax, 12 ; block size + 1 page |
895 | lea ebx, [ebx+eax*4-4] ; block end ptr |
895 | lea ebx, [ebx+eax*8-8] ; block end ptr |
896 | lea eax, [edx+ecx*4] ; unmap end ptr |
896 | lea eax, [edx+ecx*8] ; unmap end ptr |
897 | 897 | ||
898 | cmp eax, ebx ; check for overflow |
898 | cmp eax, ebx ; check for overflow |
899 | ja .error |
899 | ja .error |
900 | 900 | ||
901 | mov ebx, [offset] |
901 | mov ebx, [offset] |
902 | and ebx, not 4095 ; is it required ? |
902 | and ebx, not 4095 ; is it required ? |
903 | add ebx, [base] |
903 | add ebx, [base] |
904 | 904 | ||
905 | .unmap: |
905 | .unmap: |
906 | mov eax, [edx] ; get page addres |
906 | mov eax, [edx] ; get page addres |
907 | test al, 1 ; page mapped ? |
907 | test al, 1 ; page mapped ? |
908 | jz @F |
908 | jz @F |
909 | test eax, PG_SHARED ; page shared ? |
909 | test eax, PG_SHARED ; page shared ? |
910 | jnz @F |
910 | jnz @F |
911 | mov [edx], dword 2 |
911 | mov [edx], dword 2 |
912 | ; mark page as reserved |
912 | ; mark page as reserved |
913 | invlpg [ebx] ; when we start using |
913 | invlpg [ebx] ; when we start using |
914 | call free_page ; empty c-o-w page instead this ? |
914 | call free_page ; empty c-o-w page instead this ? |
915 | @@: |
915 | @@: |
916 | add ebx, 4096 |
916 | add ebx, 4096 |
917 | add edx, 4 |
917 | add edx, 8 |
918 | dec ecx |
918 | dec ecx |
919 | jnz .unmap |
919 | jnz .unmap |
920 | 920 | ||
921 | pop ebx |
921 | pop ebx |
922 | or al, 1 ; return non zero on success |
922 | or al, 1 ; return non zero on success |
923 | ret |
923 | ret |
924 | .error: |
924 | .error: |
925 | pop ebx |
925 | pop ebx |
926 | xor eax, eax ; something wrong |
926 | xor eax, eax ; something wrong |
927 | ret |
927 | ret |
928 | endp |
928 | endp |
929 | 929 | ||
930 | align 4 |
930 | align 4 |
931 | user_normalize: |
931 | user_normalize: |
932 | ; in: esi=heap_base, edi=heap_top |
932 | ; in: esi=heap_base, edi=heap_top |
933 | ; out: eax=0 <=> OK |
933 | ; out: eax=0 <=> OK |
934 | ; destroys: ebx,edx,esi,edi |
934 | ; destroys: ebx,edx,esi,edi |
935 | shr esi, 12 |
935 | shr esi, 12 |
936 | shr edi, 12 |
936 | shr edi, 12 |
937 | @@: |
937 | @@: |
938 | mov eax, [page_tabs+esi*4] |
938 | mov eax, [page_tabs+esi*8] |
939 | test al, USED_BLOCK |
939 | test al, USED_BLOCK |
940 | jz .test_free |
940 | jz .test_free |
941 | shr eax, 12 |
941 | shr eax, 12 |
942 | add esi, eax |
942 | add esi, eax |
943 | jmp @B |
943 | jmp @B |
944 | .test_free: |
944 | .test_free: |
945 | test al, FREE_BLOCK |
945 | test al, FREE_BLOCK |
946 | jz .err |
946 | jz .err |
947 | mov edx, eax |
947 | mov edx, eax |
948 | shr edx, 12 |
948 | shr edx, 12 |
949 | add edx, esi |
949 | add edx, esi |
950 | cmp edx, edi |
950 | cmp edx, edi |
951 | jae .exit |
951 | jae .exit |
952 | 952 | ||
953 | mov ebx, [page_tabs+edx*4] |
953 | mov ebx, [page_tabs+edx*8] |
954 | test bl, USED_BLOCK |
954 | test bl, USED_BLOCK |
955 | jz .next_free |
955 | jz .next_free |
956 | 956 | ||
957 | shr ebx, 12 |
957 | shr ebx, 12 |
958 | add edx, ebx |
958 | add edx, ebx |
959 | mov esi, edx |
959 | mov esi, edx |
960 | jmp @B |
960 | jmp @B |
961 | .next_free: |
961 | .next_free: |
962 | test bl, FREE_BLOCK |
962 | test bl, FREE_BLOCK |
963 | jz .err |
963 | jz .err |
964 | and dword [page_tabs+edx*4], 0 |
964 | and dword [page_tabs+edx*8], 0 |
965 | add eax, ebx |
965 | add eax, ebx |
966 | and eax, not 4095 |
966 | and eax, not 4095 |
967 | or eax, FREE_BLOCK |
967 | or eax, FREE_BLOCK |
968 | mov [page_tabs+esi*4], eax |
968 | mov [page_tabs+esi*8], eax |
969 | jmp @B |
969 | jmp @B |
970 | .exit: |
970 | .exit: |
971 | xor eax, eax |
971 | xor eax, eax |
972 | inc eax |
972 | inc eax |
973 | ret |
973 | ret |
974 | .err: |
974 | .err: |
975 | xor eax, eax |
975 | xor eax, eax |
976 | ret |
976 | ret |
977 | 977 | ||
978 | user_realloc: |
978 | user_realloc: |
979 | ; in: eax = pointer, ebx = new size |
979 | ; in: eax = pointer, ebx = new size |
980 | ; out: eax = new pointer or NULL |
980 | ; out: eax = new pointer or NULL |
981 | test eax, eax |
981 | test eax, eax |
982 | jnz @f |
982 | jnz @f |
983 | ; realloc(NULL,sz) - same as malloc(sz) |
983 | ; realloc(NULL,sz) - same as malloc(sz) |
984 | push ebx |
984 | push ebx |
985 | call user_alloc |
985 | call user_alloc |
986 | ret |
986 | ret |
987 | @@: |
987 | @@: |
988 | push ecx edx |
988 | push ecx edx |
989 | 989 | ||
990 | push eax |
990 | push eax |
991 | mov ecx, [current_process] |
991 | mov ecx, [current_process] |
992 | lea ecx, [ecx+PROC.heap_lock] |
992 | lea ecx, [ecx+PROC.heap_lock] |
993 | call mutex_lock |
993 | call mutex_lock |
994 | pop eax |
994 | pop eax |
995 | 995 | ||
996 | lea ecx, [eax - 0x1000] |
996 | lea ecx, [eax - 0x1000] |
997 | shr ecx, 12 |
997 | shr ecx, 12 |
998 | mov edx, [page_tabs+ecx*4] |
998 | mov edx, [page_tabs+ecx*8] |
999 | test dl, USED_BLOCK |
999 | test dl, USED_BLOCK |
1000 | jnz @f |
1000 | jnz @f |
1001 | ; attempt to realloc invalid pointer |
1001 | ; attempt to realloc invalid pointer |
1002 | .ret0: |
1002 | .ret0: |
1003 | mov ecx, [current_process] |
1003 | mov ecx, [current_process] |
1004 | lea ecx, [ecx+PROC.heap_lock] |
1004 | lea ecx, [ecx+PROC.heap_lock] |
1005 | call mutex_unlock |
1005 | call mutex_unlock |
1006 | 1006 | ||
1007 | pop edx ecx |
1007 | pop edx ecx |
1008 | xor eax, eax |
1008 | xor eax, eax |
1009 | ret |
1009 | ret |
1010 | @@: |
1010 | @@: |
1011 | test dl, DONT_FREE_BLOCK |
1011 | test dl, DONT_FREE_BLOCK |
1012 | jnz .ret0 |
1012 | jnz .ret0 |
1013 | add ebx, 0x1FFF |
1013 | add ebx, 0x1FFF |
1014 | shr edx, 12 |
1014 | shr edx, 12 |
1015 | shr ebx, 12 |
1015 | shr ebx, 12 |
1016 | ; edx = allocated size, ebx = new size |
1016 | ; edx = allocated size, ebx = new size |
1017 | add edx, ecx |
1017 | add edx, ecx |
1018 | add ebx, ecx |
1018 | add ebx, ecx |
1019 | cmp edx, ebx |
1019 | cmp edx, ebx |
1020 | jb .realloc_add |
1020 | jb .realloc_add |
1021 | ; release part of allocated memory |
1021 | ; release part of allocated memory |
1022 | .loop: |
1022 | .loop: |
1023 | cmp edx, ebx |
1023 | cmp edx, ebx |
1024 | jz .release_done |
1024 | jz .release_done |
1025 | dec edx |
1025 | dec edx |
1026 | xor eax, eax |
1026 | xor eax, eax |
1027 | xchg eax, [page_tabs+edx*4] |
1027 | xchg eax, [page_tabs+edx*8] |
1028 | test al, 1 |
1028 | test al, 1 |
1029 | jz .loop |
1029 | jz .loop |
1030 | call free_page |
1030 | call free_page |
1031 | mov eax, edx |
1031 | mov eax, edx |
1032 | shl eax, 12 |
1032 | shl eax, 12 |
1033 | invlpg [eax] |
1033 | invlpg [eax] |
1034 | jmp .loop |
1034 | jmp .loop |
1035 | .release_done: |
1035 | .release_done: |
1036 | sub ebx, ecx |
1036 | sub ebx, ecx |
1037 | cmp ebx, 1 |
1037 | cmp ebx, 1 |
1038 | jnz .nofreeall |
1038 | jnz .nofreeall |
1039 | mov eax, [page_tabs+ecx*4] |
1039 | mov eax, [page_tabs+ecx*8] |
1040 | and eax, not 0xFFF |
1040 | and eax, not 0xFFF |
1041 | mov edx, [current_process] |
1041 | mov edx, [current_process] |
1042 | mov ebx, [edx+PROC.mem_used] |
1042 | mov ebx, [edx+PROC.mem_used] |
1043 | sub ebx, eax |
1043 | sub ebx, eax |
1044 | add ebx, 0x1000 |
1044 | add ebx, 0x1000 |
1045 | or al, FREE_BLOCK |
1045 | or al, FREE_BLOCK |
1046 | mov [page_tabs+ecx*4], eax |
1046 | mov [page_tabs+ecx*8], eax |
1047 | push esi edi |
1047 | push esi edi |
1048 | mov esi, [edx+PROC.heap_base] |
1048 | mov esi, [edx+PROC.heap_base] |
1049 | mov edi, [edx+PROC.heap_top] |
1049 | mov edi, [edx+PROC.heap_top] |
1050 | mov [edx+PROC.mem_used], ebx |
1050 | mov [edx+PROC.mem_used], ebx |
1051 | call user_normalize |
1051 | call user_normalize |
1052 | pop edi esi |
1052 | pop edi esi |
1053 | jmp .ret0 ; all freed |
1053 | jmp .ret0 ; all freed |
1054 | .nofreeall: |
1054 | .nofreeall: |
1055 | sub edx, ecx |
1055 | sub edx, ecx |
1056 | shl ebx, 12 |
1056 | shl ebx, 12 |
1057 | or ebx, USED_BLOCK |
1057 | or ebx, USED_BLOCK |
1058 | xchg [page_tabs+ecx*4], ebx |
1058 | xchg [page_tabs+ecx*8], ebx |
1059 | shr ebx, 12 |
1059 | shr ebx, 12 |
1060 | sub ebx, edx |
1060 | sub ebx, edx |
1061 | push ebx ecx edx |
1061 | push ebx ecx edx |
1062 | mov edx, [current_process] |
1062 | mov edx, [current_process] |
1063 | shl ebx, 12 |
1063 | shl ebx, 12 |
1064 | sub ebx, [edx+PROC.mem_used] |
1064 | sub ebx, [edx+PROC.mem_used] |
1065 | neg ebx |
1065 | neg ebx |
1066 | mov [edx+PROC.mem_used], ebx |
1066 | mov [edx+PROC.mem_used], ebx |
1067 | pop edx ecx ebx |
1067 | pop edx ecx ebx |
1068 | lea eax, [ecx+1] |
1068 | lea eax, [ecx+1] |
1069 | shl eax, 12 |
1069 | shl eax, 12 |
1070 | push eax |
1070 | push eax |
1071 | add ecx, edx |
1071 | add ecx, edx |
1072 | lea edx, [ecx+ebx] |
1072 | lea edx, [ecx+ebx] |
1073 | shl ebx, 12 |
1073 | shl ebx, 12 |
1074 | jz .ret |
1074 | jz .ret |
1075 | push esi |
1075 | push esi |
1076 | mov esi, [current_process] |
1076 | mov esi, [current_process] |
1077 | mov esi, [esi+PROC.heap_top] |
1077 | mov esi, [esi+PROC.heap_top] |
1078 | shr esi, 12 |
1078 | shr esi, 12 |
1079 | @@: |
1079 | @@: |
1080 | cmp edx, esi |
1080 | cmp edx, esi |
1081 | jae .merge_done |
1081 | jae .merge_done |
1082 | mov eax, [page_tabs+edx*4] |
1082 | mov eax, [page_tabs+edx*8] |
1083 | test al, USED_BLOCK |
1083 | test al, USED_BLOCK |
1084 | jnz .merge_done |
1084 | jnz .merge_done |
1085 | and dword [page_tabs+edx*4], 0 |
1085 | and dword [page_tabs+edx*8], 0 |
1086 | shr eax, 12 |
1086 | shr eax, 12 |
1087 | add edx, eax |
1087 | add edx, eax |
1088 | shl eax, 12 |
1088 | shl eax, 12 |
1089 | add ebx, eax |
1089 | add ebx, eax |
1090 | jmp @b |
1090 | jmp @b |
1091 | .merge_done: |
1091 | .merge_done: |
1092 | pop esi |
1092 | pop esi |
1093 | or ebx, FREE_BLOCK |
1093 | or ebx, FREE_BLOCK |
1094 | mov [page_tabs+ecx*4], ebx |
1094 | mov [page_tabs+ecx*8], ebx |
1095 | .ret: |
1095 | .ret: |
1096 | mov ecx, [current_process] |
1096 | mov ecx, [current_process] |
1097 | lea ecx, [ecx+PROC.heap_lock] |
1097 | lea ecx, [ecx+PROC.heap_lock] |
1098 | call mutex_unlock |
1098 | call mutex_unlock |
1099 | pop eax edx ecx |
1099 | pop eax edx ecx |
1100 | ret |
1100 | ret |
1101 | 1101 | ||
1102 | .realloc_add: |
1102 | .realloc_add: |
1103 | ; get some additional memory |
1103 | ; get some additional memory |
1104 | mov eax, [current_process] |
1104 | mov eax, [current_process] |
1105 | mov eax, [eax+PROC.heap_top] |
1105 | mov eax, [eax+PROC.heap_top] |
1106 | shr eax, 12 |
1106 | shr eax, 12 |
1107 | cmp edx, eax |
1107 | cmp edx, eax |
1108 | jae .cant_inplace |
1108 | jae .cant_inplace |
1109 | mov eax, [page_tabs+edx*4] |
1109 | mov eax, [page_tabs+edx*8] |
1110 | test al, FREE_BLOCK |
1110 | test al, FREE_BLOCK |
1111 | jz .cant_inplace |
1111 | jz .cant_inplace |
1112 | shr eax, 12 |
1112 | shr eax, 12 |
1113 | add eax, edx |
1113 | add eax, edx |
1114 | sub eax, ebx |
1114 | sub eax, ebx |
1115 | jb .cant_inplace |
1115 | jb .cant_inplace |
1116 | jz @f |
1116 | jz @f |
1117 | shl eax, 12 |
1117 | shl eax, 12 |
1118 | or al, FREE_BLOCK |
1118 | or al, FREE_BLOCK |
1119 | mov [page_tabs+ebx*4], eax |
1119 | mov [page_tabs+ebx*8], eax |
1120 | @@: |
1120 | @@: |
1121 | mov eax, ebx |
1121 | mov eax, ebx |
1122 | sub eax, ecx |
1122 | sub eax, ecx |
1123 | shl eax, 12 |
1123 | shl eax, 12 |
1124 | or al, USED_BLOCK |
1124 | or al, USED_BLOCK |
1125 | mov [page_tabs+ecx*4], eax |
1125 | mov [page_tabs+ecx*8], eax |
1126 | lea eax, [ecx+1] |
1126 | lea eax, [ecx+1] |
1127 | shl eax, 12 |
1127 | shl eax, 12 |
1128 | push eax |
1128 | push eax |
1129 | push edi |
1129 | push edi |
1130 | lea edi, [page_tabs+edx*4] |
1130 | lea edi, [page_tabs+edx*8] |
1131 | mov eax, 2 |
1131 | mov eax, 2 |
1132 | sub ebx, edx |
1132 | sub ebx, edx |
1133 | mov ecx, ebx |
1133 | mov ecx, ebx |
1134 | cld |
1134 | cld |
1135 | rep stosd |
1135 | rep stosd |
1136 | pop edi |
1136 | pop edi |
1137 | mov edx, [current_process] |
1137 | mov edx, [current_process] |
1138 | shl ebx, 12 |
1138 | shl ebx, 12 |
1139 | add [edx+PROC.mem_used], ebx |
1139 | add [edx+PROC.mem_used], ebx |
1140 | 1140 | ||
1141 | mov ecx, [current_process] |
1141 | mov ecx, [current_process] |
1142 | lea ecx, [ecx+PROC.heap_lock] |
1142 | lea ecx, [ecx+PROC.heap_lock] |
1143 | call mutex_unlock |
1143 | call mutex_unlock |
1144 | pop eax edx ecx |
1144 | pop eax edx ecx |
1145 | ret |
1145 | ret |
1146 | 1146 | ||
1147 | .cant_inplace: |
1147 | .cant_inplace: |
1148 | push esi edi |
1148 | push esi edi |
1149 | mov eax, [current_process] |
1149 | mov eax, [current_process] |
1150 | mov esi, [eax+PROC.heap_base] |
1150 | mov esi, [eax+PROC.heap_base] |
1151 | mov edi, [eax+PROC.heap_top] |
1151 | mov edi, [eax+PROC.heap_top] |
1152 | shr esi, 12 |
1152 | shr esi, 12 |
1153 | shr edi, 12 |
1153 | shr edi, 12 |
1154 | sub ebx, ecx |
1154 | sub ebx, ecx |
1155 | .find_place: |
1155 | .find_place: |
1156 | cmp esi, edi |
1156 | cmp esi, edi |
1157 | jae .place_not_found |
1157 | jae .place_not_found |
1158 | mov eax, [page_tabs+esi*4] |
1158 | mov eax, [page_tabs+esi*8] |
1159 | test al, FREE_BLOCK |
1159 | test al, FREE_BLOCK |
1160 | jz .next_place |
1160 | jz .next_place |
1161 | shr eax, 12 |
1161 | shr eax, 12 |
1162 | cmp eax, ebx |
1162 | cmp eax, ebx |
1163 | jae .place_found |
1163 | jae .place_found |
1164 | add esi, eax |
1164 | add esi, eax |
1165 | jmp .find_place |
1165 | jmp .find_place |
1166 | .next_place: |
1166 | .next_place: |
1167 | shr eax, 12 |
1167 | shr eax, 12 |
1168 | add esi, eax |
1168 | add esi, eax |
1169 | jmp .find_place |
1169 | jmp .find_place |
1170 | .place_not_found: |
1170 | .place_not_found: |
1171 | pop edi esi |
1171 | pop edi esi |
1172 | jmp .ret0 |
1172 | jmp .ret0 |
1173 | .place_found: |
1173 | .place_found: |
1174 | sub eax, ebx |
1174 | sub eax, ebx |
1175 | jz @f |
1175 | jz @f |
1176 | push esi |
1176 | push esi |
1177 | add esi, ebx |
1177 | add esi, ebx |
1178 | shl eax, 12 |
1178 | shl eax, 12 |
1179 | or al, FREE_BLOCK |
1179 | or al, FREE_BLOCK |
1180 | mov [page_tabs+esi*4], eax |
1180 | mov [page_tabs+esi*8], eax |
1181 | pop esi |
1181 | pop esi |
1182 | @@: |
1182 | @@: |
1183 | mov eax, ebx |
1183 | mov eax, ebx |
1184 | shl eax, 12 |
1184 | shl eax, 12 |
1185 | or al, USED_BLOCK |
1185 | or al, USED_BLOCK |
1186 | mov [page_tabs+esi*4], eax |
1186 | mov [page_tabs+esi*8], eax |
1187 | inc esi |
1187 | inc esi |
1188 | mov eax, esi |
1188 | mov eax, esi |
1189 | shl eax, 12 |
1189 | shl eax, 12 |
1190 | push eax |
1190 | push eax |
1191 | mov eax, [page_tabs+ecx*4] |
1191 | mov eax, [page_tabs+ecx*8] |
1192 | and eax, not 0xFFF |
1192 | and eax, not 0xFFF |
1193 | or al, FREE_BLOCK |
1193 | or al, FREE_BLOCK |
1194 | sub edx, ecx |
1194 | sub edx, ecx |
1195 | mov [page_tabs+ecx*4], eax |
1195 | mov [page_tabs+ecx*8], eax |
1196 | inc ecx |
1196 | inc ecx |
1197 | dec ebx |
1197 | dec ebx |
1198 | dec edx |
1198 | dec edx |
1199 | jz .no |
1199 | jz .no |
1200 | @@: |
1200 | @@: |
1201 | xor eax, eax |
1201 | xor eax, eax |
1202 | xchg eax, [page_tabs+ecx*4] |
1202 | xchg eax, [page_tabs+ecx*8] |
1203 | mov [page_tabs+esi*4], eax |
1203 | mov [page_tabs+esi*8], eax |
1204 | mov eax, ecx |
1204 | mov eax, ecx |
1205 | shl eax, 12 |
1205 | shl eax, 12 |
1206 | invlpg [eax] |
1206 | invlpg [eax] |
1207 | inc esi |
1207 | inc esi |
1208 | inc ecx |
1208 | inc ecx |
1209 | dec ebx |
1209 | dec ebx |
1210 | dec edx |
1210 | dec edx |
1211 | jnz @b |
1211 | jnz @b |
1212 | .no: |
1212 | .no: |
1213 | push ebx |
1213 | push ebx |
1214 | mov edx, [current_process] |
1214 | mov edx, [current_process] |
1215 | shl ebx, 12 |
1215 | shl ebx, 12 |
1216 | add [edx+PROC.mem_used], ebx |
1216 | add [edx+PROC.mem_used], ebx |
1217 | pop ebx |
1217 | pop ebx |
1218 | @@: |
1218 | @@: |
1219 | mov dword [page_tabs+esi*4], 2 |
1219 | mov dword [page_tabs+esi*8], 2 |
1220 | inc esi |
1220 | inc esi |
1221 | dec ebx |
1221 | dec ebx |
1222 | jnz @b |
1222 | jnz @b |
1223 | 1223 | ||
1224 | mov ecx, [current_process] |
1224 | mov ecx, [current_process] |
1225 | lea ecx, [ecx+PROC.heap_lock] |
1225 | lea ecx, [ecx+PROC.heap_lock] |
1226 | call mutex_unlock |
1226 | call mutex_unlock |
1227 | pop eax edi esi edx ecx |
1227 | pop eax edi esi edx ecx |
1228 | ret |
1228 | ret |
1229 | 1229 | ||
1230 | 1230 | ||
1231 | 1231 | ||
1232 | ;;;;;;;;;;;;;; SHARED MEMORY ;;;;;;;;;;;;;;;;; |
1232 | ;;;;;;;;;;;;;; SHARED MEMORY ;;;;;;;;;;;;;;;;; |
1233 | 1233 | ||
1234 | 1234 | ||
1235 | ; param |
1235 | ; param |
1236 | ; eax= shm_map object |
1236 | ; eax= shm_map object |
1237 | 1237 | ||
1238 | align 4 |
1238 | align 4 |
1239 | destroy_smap: |
1239 | destroy_smap: |
1240 | 1240 | ||
1241 | pushfd |
1241 | pushfd |
1242 | cli |
1242 | cli |
1243 | 1243 | ||
1244 | push esi |
1244 | push esi |
1245 | push edi |
1245 | push edi |
1246 | 1246 | ||
1247 | mov edi, eax |
1247 | mov edi, eax |
1248 | mov esi, [eax+SMAP.parent] |
1248 | mov esi, [eax+SMAP.parent] |
1249 | test esi, esi |
1249 | test esi, esi |
1250 | jz .done |
1250 | jz .done |
1251 | 1251 | ||
1252 | lock dec [esi+SMEM.refcount] |
1252 | lock dec [esi+SMEM.refcount] |
1253 | jnz .done |
1253 | jnz .done |
1254 | 1254 | ||
1255 | mov ecx, [esi+SMEM.bk] |
1255 | mov ecx, [esi+SMEM.bk] |
1256 | mov edx, [esi+SMEM.fd] |
1256 | mov edx, [esi+SMEM.fd] |
1257 | 1257 | ||
1258 | mov [ecx+SMEM.fd], edx |
1258 | mov [ecx+SMEM.fd], edx |
1259 | mov [edx+SMEM.bk], ecx |
1259 | mov [edx+SMEM.bk], ecx |
1260 | 1260 | ||
1261 | stdcall kernel_free, [esi+SMEM.base] |
1261 | stdcall kernel_free, [esi+SMEM.base] |
1262 | mov eax, esi |
1262 | mov eax, esi |
1263 | call free |
1263 | call free |
1264 | .done: |
1264 | .done: |
1265 | mov eax, edi |
1265 | mov eax, edi |
1266 | call destroy_kernel_object |
1266 | call destroy_kernel_object |
1267 | 1267 | ||
1268 | pop edi |
1268 | pop edi |
1269 | pop esi |
1269 | pop esi |
1270 | popfd |
1270 | popfd |
1271 | 1271 | ||
1272 | ret |
1272 | ret |
1273 | 1273 | ||
1274 | E_NOTFOUND equ 5 |
1274 | E_NOTFOUND equ 5 |
1275 | E_ACCESS equ 10 |
1275 | E_ACCESS equ 10 |
1276 | E_NOMEM equ 30 |
1276 | E_NOMEM equ 30 |
1277 | E_PARAM equ 33 |
1277 | E_PARAM equ 33 |
1278 | 1278 | ||
1279 | SHM_READ equ 0 |
1279 | SHM_READ equ 0 |
1280 | SHM_WRITE equ 1 |
1280 | SHM_WRITE equ 1 |
1281 | 1281 | ||
1282 | SHM_ACCESS_MASK equ 3 |
1282 | SHM_ACCESS_MASK equ 3 |
1283 | 1283 | ||
1284 | SHM_OPEN equ (0 shl 2) |
1284 | SHM_OPEN equ (0 shl 2) |
1285 | SHM_OPEN_ALWAYS equ (1 shl 2) |
1285 | SHM_OPEN_ALWAYS equ (1 shl 2) |
1286 | SHM_CREATE equ (2 shl 2) |
1286 | SHM_CREATE equ (2 shl 2) |
1287 | 1287 | ||
1288 | SHM_OPEN_MASK equ (3 shl 2) |
1288 | SHM_OPEN_MASK equ (3 shl 2) |
1289 | 1289 | ||
1290 | align 4 |
1290 | align 4 |
1291 | proc shmem_open stdcall name:dword, size:dword, access:dword |
1291 | proc shmem_open stdcall name:dword, size:dword, access:dword |
1292 | locals |
1292 | locals |
1293 | action dd ? |
1293 | action dd ? |
1294 | owner_access dd ? |
1294 | owner_access dd ? |
1295 | mapped dd ? |
1295 | mapped dd ? |
1296 | endl |
1296 | endl |
1297 | 1297 | ||
1298 | push ebx |
1298 | push ebx |
1299 | push esi |
1299 | push esi |
1300 | push edi |
1300 | push edi |
1301 | 1301 | ||
1302 | mov [mapped], 0 |
1302 | mov [mapped], 0 |
1303 | mov [owner_access], 0 |
1303 | mov [owner_access], 0 |
1304 | 1304 | ||
1305 | pushfd ;mutex required |
1305 | pushfd ;mutex required |
1306 | cli |
1306 | cli |
1307 | 1307 | ||
1308 | mov eax, [access] |
1308 | mov eax, [access] |
1309 | and eax, SHM_OPEN_MASK |
1309 | and eax, SHM_OPEN_MASK |
1310 | mov [action], eax |
1310 | mov [action], eax |
1311 | 1311 | ||
1312 | mov ebx, [name] |
1312 | mov ebx, [name] |
1313 | test ebx, ebx |
1313 | test ebx, ebx |
1314 | mov edx, E_PARAM |
1314 | mov edx, E_PARAM |
1315 | jz .fail |
1315 | jz .fail |
1316 | 1316 | ||
1317 | mov esi, [shmem_list.fd] |
1317 | mov esi, [shmem_list.fd] |
1318 | align 4 |
1318 | align 4 |
1319 | @@: |
1319 | @@: |
1320 | cmp esi, shmem_list |
1320 | cmp esi, shmem_list |
1321 | je .not_found |
1321 | je .not_found |
1322 | 1322 | ||
1323 | lea edx, [esi+SMEM.name]; link , base, size |
1323 | lea edx, [esi+SMEM.name]; link , base, size |
1324 | stdcall strncmp, edx, ebx, 32 |
1324 | stdcall strncmp, edx, ebx, 32 |
1325 | test eax, eax |
1325 | test eax, eax |
1326 | je .found |
1326 | je .found |
1327 | 1327 | ||
1328 | mov esi, [esi+SMEM.fd] |
1328 | mov esi, [esi+SMEM.fd] |
1329 | jmp @B |
1329 | jmp @B |
1330 | 1330 | ||
1331 | .not_found: |
1331 | .not_found: |
1332 | mov eax, [action] |
1332 | mov eax, [action] |
1333 | 1333 | ||
1334 | cmp eax, SHM_OPEN |
1334 | cmp eax, SHM_OPEN |
1335 | mov edx, E_NOTFOUND |
1335 | mov edx, E_NOTFOUND |
1336 | je .fail |
1336 | je .fail |
1337 | 1337 | ||
1338 | cmp eax, SHM_CREATE |
1338 | cmp eax, SHM_CREATE |
1339 | mov edx, E_PARAM |
1339 | mov edx, E_PARAM |
1340 | je .create_shm |
1340 | je .create_shm |
1341 | 1341 | ||
1342 | cmp eax, SHM_OPEN_ALWAYS |
1342 | cmp eax, SHM_OPEN_ALWAYS |
1343 | jne .fail |
1343 | jne .fail |
1344 | 1344 | ||
1345 | .create_shm: |
1345 | .create_shm: |
1346 | 1346 | ||
1347 | mov ecx, [size] |
1347 | mov ecx, [size] |
1348 | test ecx, ecx |
1348 | test ecx, ecx |
1349 | jz .fail |
1349 | jz .fail |
1350 | 1350 | ||
1351 | add ecx, 4095 |
1351 | add ecx, 4095 |
1352 | and ecx, -4096 |
1352 | and ecx, -4096 |
1353 | mov [size], ecx |
1353 | mov [size], ecx |
1354 | 1354 | ||
1355 | mov eax, sizeof.SMEM |
1355 | mov eax, sizeof.SMEM |
1356 | call malloc |
1356 | call malloc |
1357 | test eax, eax |
1357 | test eax, eax |
1358 | mov esi, eax |
1358 | mov esi, eax |
1359 | mov edx, E_NOMEM |
1359 | mov edx, E_NOMEM |
1360 | jz .fail |
1360 | jz .fail |
1361 | 1361 | ||
1362 | stdcall kernel_alloc, [size] |
1362 | stdcall kernel_alloc, [size] |
1363 | test eax, eax |
1363 | test eax, eax |
1364 | mov [mapped], eax |
1364 | mov [mapped], eax |
1365 | mov edx, E_NOMEM |
1365 | mov edx, E_NOMEM |
1366 | jz .cleanup |
1366 | jz .cleanup |
1367 | 1367 | ||
1368 | mov ecx, [size] |
1368 | mov ecx, [size] |
1369 | mov edx, [access] |
1369 | mov edx, [access] |
1370 | and edx, SHM_ACCESS_MASK |
1370 | and edx, SHM_ACCESS_MASK |
1371 | 1371 | ||
1372 | mov [esi+SMEM.base], eax |
1372 | mov [esi+SMEM.base], eax |
1373 | mov [esi+SMEM.size], ecx |
1373 | mov [esi+SMEM.size], ecx |
1374 | mov [esi+SMEM.access], edx |
1374 | mov [esi+SMEM.access], edx |
1375 | mov [esi+SMEM.refcount], 0 |
1375 | mov [esi+SMEM.refcount], 0 |
1376 | mov [esi+SMEM.name+28], 0 |
1376 | mov [esi+SMEM.name+28], 0 |
1377 | 1377 | ||
1378 | lea eax, [esi+SMEM.name] |
1378 | lea eax, [esi+SMEM.name] |
1379 | stdcall strncpy, eax, [name], 31 |
1379 | stdcall strncpy, eax, [name], 31 |
1380 | 1380 | ||
1381 | mov eax, [shmem_list.fd] |
1381 | mov eax, [shmem_list.fd] |
1382 | mov [esi+SMEM.bk], shmem_list |
1382 | mov [esi+SMEM.bk], shmem_list |
1383 | mov [esi+SMEM.fd], eax |
1383 | mov [esi+SMEM.fd], eax |
1384 | 1384 | ||
1385 | mov [eax+SMEM.bk], esi |
1385 | mov [eax+SMEM.bk], esi |
1386 | mov [shmem_list.fd], esi |
1386 | mov [shmem_list.fd], esi |
1387 | 1387 | ||
1388 | mov [action], SHM_OPEN |
1388 | mov [action], SHM_OPEN |
1389 | mov [owner_access], SHM_WRITE |
1389 | mov [owner_access], SHM_WRITE |
1390 | 1390 | ||
1391 | .found: |
1391 | .found: |
1392 | mov eax, [action] |
1392 | mov eax, [action] |
1393 | 1393 | ||
1394 | cmp eax, SHM_CREATE |
1394 | cmp eax, SHM_CREATE |
1395 | mov edx, E_ACCESS |
1395 | mov edx, E_ACCESS |
1396 | je .exit |
1396 | je .exit |
1397 | 1397 | ||
1398 | cmp eax, SHM_OPEN |
1398 | cmp eax, SHM_OPEN |
1399 | mov edx, E_PARAM |
1399 | mov edx, E_PARAM |
1400 | je .create_map |
1400 | je .create_map |
1401 | 1401 | ||
1402 | cmp eax, SHM_OPEN_ALWAYS |
1402 | cmp eax, SHM_OPEN_ALWAYS |
1403 | jne .fail |
1403 | jne .fail |
1404 | 1404 | ||
1405 | .create_map: |
1405 | .create_map: |
1406 | 1406 | ||
1407 | mov eax, [access] |
1407 | mov eax, [access] |
1408 | and eax, SHM_ACCESS_MASK |
1408 | and eax, SHM_ACCESS_MASK |
1409 | cmp eax, [esi+SMEM.access] |
1409 | cmp eax, [esi+SMEM.access] |
1410 | mov [access], eax |
1410 | mov [access], eax |
1411 | mov edx, E_ACCESS |
1411 | mov edx, E_ACCESS |
1412 | ja .fail |
1412 | ja .fail |
1413 | 1413 | ||
1414 | mov ebx, [CURRENT_TASK] |
1414 | mov ebx, [CURRENT_TASK] |
1415 | shl ebx, 5 |
1415 | shl ebx, 5 |
1416 | mov ebx, [CURRENT_TASK+ebx+4] |
1416 | mov ebx, [CURRENT_TASK+ebx+4] |
1417 | mov eax, sizeof.SMAP |
1417 | mov eax, sizeof.SMAP |
1418 | 1418 | ||
1419 | call create_kernel_object |
1419 | call create_kernel_object |
1420 | test eax, eax |
1420 | test eax, eax |
1421 | mov edi, eax |
1421 | mov edi, eax |
1422 | mov edx, E_NOMEM |
1422 | mov edx, E_NOMEM |
1423 | jz .fail |
1423 | jz .fail |
1424 | 1424 | ||
1425 | inc [esi+SMEM.refcount] |
1425 | inc [esi+SMEM.refcount] |
1426 | 1426 | ||
1427 | mov [edi+SMAP.magic], 'SMAP' |
1427 | mov [edi+SMAP.magic], 'SMAP' |
1428 | mov [edi+SMAP.destroy], destroy_smap |
1428 | mov [edi+SMAP.destroy], destroy_smap |
1429 | mov [edi+SMAP.parent], esi |
1429 | mov [edi+SMAP.parent], esi |
1430 | mov [edi+SMAP.base], 0 |
1430 | mov [edi+SMAP.base], 0 |
1431 | 1431 | ||
1432 | stdcall user_alloc, [esi+SMEM.size] |
1432 | stdcall user_alloc, [esi+SMEM.size] |
1433 | test eax, eax |
1433 | test eax, eax |
1434 | mov [mapped], eax |
1434 | mov [mapped], eax |
1435 | mov edx, E_NOMEM |
1435 | mov edx, E_NOMEM |
1436 | jz .cleanup2 |
1436 | jz .cleanup2 |
1437 | 1437 | ||
1438 | mov [edi+SMAP.base], eax |
1438 | mov [edi+SMAP.base], eax |
1439 | 1439 | ||
1440 | mov ecx, [esi+SMEM.size] |
1440 | mov ecx, [esi+SMEM.size] |
1441 | mov [size], ecx |
1441 | mov [size], ecx |
1442 | 1442 | ||
1443 | shr ecx, 12 |
1443 | shr ecx, 12 |
1444 | shr eax, 10 |
1444 | shr eax, 9 |
1445 | 1445 | ||
1446 | mov esi, [esi+SMEM.base] |
1446 | mov esi, [esi+SMEM.base] |
1447 | shr esi, 10 |
1447 | shr esi, 9 |
1448 | lea edi, [page_tabs+eax] |
1448 | lea edi, [page_tabs+eax] |
1449 | add esi, page_tabs |
1449 | add esi, page_tabs |
1450 | 1450 | ||
1451 | mov edx, [access] |
1451 | mov edx, [access] |
1452 | or edx, [owner_access] |
1452 | or edx, [owner_access] |
1453 | shl edx, 1 |
1453 | shl edx, 1 |
1454 | or edx, PG_SHARED+PG_UR |
1454 | or edx, PG_SHARED+PG_UR |
1455 | @@: |
1455 | @@: |
1456 | lodsd |
1456 | lodsd |
1457 | and eax, 0xFFFFF000 |
1457 | and eax, 0xFFFFF000 |
1458 | or eax, edx |
1458 | or eax, edx |
1459 | stosd |
1459 | stosd |
- | 1460 | movsd |
|
1460 | loop @B |
1461 | loop @B |
1461 | 1462 | ||
1462 | xor edx, edx |
1463 | xor edx, edx |
1463 | 1464 | ||
1464 | cmp [owner_access], 0 |
1465 | cmp [owner_access], 0 |
1465 | jne .fail |
1466 | jne .fail |
1466 | .exit: |
1467 | .exit: |
1467 | mov edx, [size] |
1468 | mov edx, [size] |
1468 | .fail: |
1469 | .fail: |
1469 | mov eax, [mapped] |
1470 | mov eax, [mapped] |
1470 | 1471 | ||
1471 | popfd |
1472 | popfd |
1472 | pop edi |
1473 | pop edi |
1473 | pop esi |
1474 | pop esi |
1474 | pop ebx |
1475 | pop ebx |
1475 | ret |
1476 | ret |
1476 | .cleanup: |
1477 | .cleanup: |
1477 | mov [size], edx |
1478 | mov [size], edx |
1478 | mov eax, esi |
1479 | mov eax, esi |
1479 | call free |
1480 | call free |
1480 | jmp .exit |
1481 | jmp .exit |
1481 | 1482 | ||
1482 | .cleanup2: |
1483 | .cleanup2: |
1483 | mov [size], edx |
1484 | mov [size], edx |
1484 | mov eax, edi |
1485 | mov eax, edi |
1485 | call destroy_smap |
1486 | call destroy_smap |
1486 | jmp .exit |
1487 | jmp .exit |
1487 | endp |
1488 | endp |
1488 | 1489 | ||
1489 | align 4 |
1490 | align 4 |
1490 | proc shmem_close stdcall, name:dword |
1491 | proc shmem_close stdcall, name:dword |
1491 | 1492 | ||
1492 | mov eax, [name] |
1493 | mov eax, [name] |
1493 | test eax, eax |
1494 | test eax, eax |
1494 | jz .fail |
1495 | jz .fail |
1495 | 1496 | ||
1496 | push esi |
1497 | push esi |
1497 | push edi |
1498 | push edi |
1498 | pushfd |
1499 | pushfd |
1499 | cli |
1500 | cli |
1500 | 1501 | ||
1501 | mov esi, [current_slot] |
1502 | mov esi, [current_slot] |
1502 | add esi, APP_OBJ_OFFSET |
1503 | add esi, APP_OBJ_OFFSET |
1503 | .next: |
1504 | .next: |
1504 | mov eax, [esi+APPOBJ.fd] |
1505 | mov eax, [esi+APPOBJ.fd] |
1505 | test eax, eax |
1506 | test eax, eax |
1506 | jz @F |
1507 | jz @F |
1507 | 1508 | ||
1508 | cmp eax, esi |
1509 | cmp eax, esi |
1509 | mov esi, eax |
1510 | mov esi, eax |
1510 | je @F |
1511 | je @F |
1511 | 1512 | ||
1512 | cmp [eax+SMAP.magic], 'SMAP' |
1513 | cmp [eax+SMAP.magic], 'SMAP' |
1513 | jne .next |
1514 | jne .next |
1514 | 1515 | ||
1515 | mov edi, [eax+SMAP.parent] |
1516 | mov edi, [eax+SMAP.parent] |
1516 | test edi, edi |
1517 | test edi, edi |
1517 | jz .next |
1518 | jz .next |
1518 | 1519 | ||
1519 | lea edi, [edi+SMEM.name] |
1520 | lea edi, [edi+SMEM.name] |
1520 | stdcall strncmp, [name], edi, 32 |
1521 | stdcall strncmp, [name], edi, 32 |
1521 | test eax, eax |
1522 | test eax, eax |
1522 | jne .next |
1523 | jne .next |
1523 | 1524 | ||
1524 | stdcall user_free, [esi+SMAP.base] |
1525 | stdcall user_free, [esi+SMAP.base] |
1525 | 1526 | ||
1526 | mov eax, esi |
1527 | mov eax, esi |
1527 | call [esi+APPOBJ.destroy] |
1528 | call [esi+APPOBJ.destroy] |
1528 | @@: |
1529 | @@: |
1529 | popfd |
1530 | popfd |
1530 | pop edi |
1531 | pop edi |
1531 | pop esi |
1532 | pop esi |
1532 | .fail: |
1533 | .fail: |
1533 | ret |
1534 | ret |
1534 | endp=> |
1535 | endp=> |