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1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
2 | ;; ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2009. 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: 1615 $ |
8 | $Revision: 2130 $ |
9 | 9 | ||
10 | 10 | ||
11 | struc MEM_BLOCK |
11 | struc MEM_BLOCK |
12 | { .next_block dd ? |
12 | { .next_block dd ? |
13 | .prev_block dd ? ;+4 |
13 | .prev_block dd ? ;+4 |
14 | .list_fd dd ? ;+8 |
14 | .list_fd dd ? ;+8 |
15 | .list_bk dd ? ;+12 |
15 | .list_bk dd ? ;+12 |
16 | .base dd ? ;+16 |
16 | .base dd ? ;+16 |
17 | .size dd ? ;+20 |
17 | .size dd ? ;+20 |
18 | .flags dd ? ;+24 |
18 | .flags dd ? ;+24 |
19 | .handle dd ? ;+28 |
19 | .handle dd ? ;+28 |
20 | } |
20 | } |
21 | 21 | ||
22 | MEM_LIST_OFFSET equ 8 |
22 | MEM_LIST_OFFSET equ 8 |
23 | FREE_BLOCK equ 4 |
23 | FREE_BLOCK equ 4 |
24 | USED_BLOCK equ 8 |
24 | USED_BLOCK equ 8 |
25 | DONT_FREE_BLOCK equ 10h |
25 | DONT_FREE_BLOCK equ 10h |
26 | 26 | ||
27 | virtual at 0 |
27 | virtual at 0 |
28 | MEM_BLOCK MEM_BLOCK |
28 | MEM_BLOCK MEM_BLOCK |
29 | end virtual |
29 | end virtual |
30 | 30 | ||
31 | MEM_BLOCK_SIZE equ 8*4 |
31 | MEM_BLOCK_SIZE equ 8*4 |
32 | 32 | ||
33 | block_next equ MEM_BLOCK.next_block |
33 | block_next equ MEM_BLOCK.next_block |
34 | block_prev equ MEM_BLOCK.prev_block |
34 | block_prev equ MEM_BLOCK.prev_block |
35 | list_fd equ MEM_BLOCK.list_fd |
35 | list_fd equ MEM_BLOCK.list_fd |
36 | list_bk equ MEM_BLOCK.list_bk |
36 | list_bk equ MEM_BLOCK.list_bk |
37 | block_base equ MEM_BLOCK.base |
37 | block_base equ MEM_BLOCK.base |
38 | block_size equ MEM_BLOCK.size |
38 | block_size equ MEM_BLOCK.size |
39 | block_flags equ MEM_BLOCK.flags |
39 | block_flags equ MEM_BLOCK.flags |
40 | 40 | ||
41 | macro calc_index op |
41 | macro calc_index op |
42 | { shr op, 12 |
42 | { shr op, 12 |
43 | dec op |
43 | dec op |
44 | cmp op, 63 |
44 | cmp op, 63 |
45 | jna @f |
45 | jna @f |
46 | mov op, 63 |
46 | mov op, 63 |
47 | @@: |
47 | @@: |
48 | } |
48 | } |
49 | 49 | ||
50 | macro remove_from_list op |
50 | macro remove_from_list op |
51 | { mov edx, [op+list_fd] |
51 | { mov edx, [op+list_fd] |
52 | mov ecx, [op+list_bk] |
52 | mov ecx, [op+list_bk] |
53 | test edx, edx |
53 | test edx, edx |
54 | jz @f |
54 | jz @f |
55 | mov [edx+list_bk], ecx |
55 | mov [edx+list_bk], ecx |
56 | @@: |
56 | @@: |
57 | test ecx, ecx |
57 | test ecx, ecx |
58 | jz @f |
58 | jz @f |
59 | mov [ecx+list_fd], edx |
59 | mov [ecx+list_fd], edx |
60 | @@: |
60 | @@: |
61 | mov [op+list_fd],0 |
61 | mov [op+list_fd],0 |
62 | mov [op+list_bk],0 |
62 | mov [op+list_bk],0 |
63 | } |
63 | } |
64 | 64 | ||
65 | macro remove_from_free op |
65 | macro remove_from_free op |
66 | { |
66 | { |
67 | remove_from_list op |
67 | remove_from_list op |
68 | 68 | ||
69 | mov eax, [op+block_size] |
69 | mov eax, [op+block_size] |
70 | calc_index eax |
70 | calc_index eax |
71 | cmp [mem_block_list+eax*4], op |
71 | cmp [mem_block_list+eax*4], op |
72 | jne @f |
72 | jne @f |
73 | mov [mem_block_list+eax*4], edx |
73 | mov [mem_block_list+eax*4], edx |
74 | @@: |
74 | @@: |
75 | cmp [mem_block_list+eax*4], 0 |
75 | cmp [mem_block_list+eax*4], 0 |
76 | jne @f |
76 | jne @f |
77 | btr [mem_block_mask], eax |
77 | btr [mem_block_mask], eax |
78 | @@: |
78 | @@: |
79 | } |
79 | } |
80 | 80 | ||
81 | macro remove_from_used op |
81 | macro remove_from_used op |
82 | { |
82 | { |
83 | mov edx, [op+list_fd] |
83 | mov edx, [op+list_fd] |
84 | mov ecx, [op+list_bk] |
84 | mov ecx, [op+list_bk] |
85 | mov [edx+list_bk], ecx |
85 | mov [edx+list_bk], ecx |
86 | mov [ecx+list_fd], edx |
86 | mov [ecx+list_fd], edx |
87 | mov [op+list_fd], 0 |
87 | mov [op+list_fd], 0 |
88 | mov [op+list_bk], 0 |
88 | mov [op+list_bk], 0 |
89 | } |
89 | } |
90 | 90 | ||
91 | align 4 |
91 | align 4 |
92 | proc init_kernel_heap |
92 | proc init_kernel_heap |
93 | 93 | ||
94 | mov ecx, 64 |
94 | mov ecx, 64 |
95 | mov edi, mem_block_list |
95 | mov edi, mem_block_list |
96 | xor eax, eax |
96 | xor eax, eax |
97 | cld |
97 | cld |
98 | rep stosd |
98 | rep stosd |
99 | 99 | ||
100 | mov ecx, 512/4 |
100 | mov ecx, 512/4 |
101 | mov edi, mem_block_map |
101 | mov edi, mem_block_map |
102 | not eax |
102 | not eax |
103 | rep stosd |
103 | rep stosd |
104 | 104 | ||
105 | mov [mem_block_start], mem_block_map |
105 | mov [mem_block_start], mem_block_map |
106 | mov [mem_block_end], mem_block_map+512 |
106 | mov [mem_block_end], mem_block_map+512 |
107 | mov [mem_block_arr], HEAP_BASE |
107 | mov [mem_block_arr], HEAP_BASE |
108 | 108 | ||
109 | mov eax, mem_used.fd-MEM_LIST_OFFSET |
109 | mov eax, mem_used.fd-MEM_LIST_OFFSET |
110 | mov [mem_used.fd], eax |
110 | mov [mem_used.fd], eax |
111 | mov [mem_used.bk], eax |
111 | mov [mem_used.bk], eax |
112 | 112 | ||
113 | stdcall alloc_pages, dword 32 |
113 | stdcall alloc_pages, dword 32 |
114 | mov ecx, 32 |
114 | mov ecx, 32 |
115 | mov edx, eax |
115 | mov edx, eax |
116 | mov edi, HEAP_BASE |
116 | mov edi, HEAP_BASE |
117 | .l1: |
117 | .l1: |
118 | stdcall map_page,edi,edx,PG_SW |
118 | stdcall map_page,edi,edx,PG_SW |
119 | add edi, 0x1000 |
119 | add edi, 0x1000 |
120 | add edx, 0x1000 |
120 | add edx, 0x1000 |
121 | dec ecx |
121 | dec ecx |
122 | jnz .l1 |
122 | jnz .l1 |
123 | 123 | ||
124 | mov edi, HEAP_BASE |
124 | mov edi, HEAP_BASE |
125 | mov ebx, HEAP_BASE+MEM_BLOCK_SIZE |
125 | mov ebx, HEAP_BASE+MEM_BLOCK_SIZE |
126 | xor eax, eax |
126 | xor eax, eax |
127 | mov [edi+block_next], ebx |
127 | mov [edi+block_next], ebx |
128 | mov [edi+block_prev], eax |
128 | mov [edi+block_prev], eax |
129 | mov [edi+list_fd], eax |
129 | mov [edi+list_fd], eax |
130 | mov [edi+list_bk], eax |
130 | mov [edi+list_bk], eax |
131 | mov [edi+block_base], HEAP_BASE |
131 | mov [edi+block_base], HEAP_BASE |
132 | mov [edi+block_size], 4096*MEM_BLOCK_SIZE |
132 | mov [edi+block_size], 4096*MEM_BLOCK_SIZE |
133 | mov [edi+block_flags], USED_BLOCK |
133 | mov [edi+block_flags], USED_BLOCK |
134 | 134 | ||
135 | mov [ebx+block_next], eax |
135 | mov [ebx+block_next], eax |
136 | mov [ebx+block_prev], eax |
136 | mov [ebx+block_prev], eax |
137 | mov [ebx+list_fd], eax |
137 | mov [ebx+list_fd], eax |
138 | mov [ebx+list_bk], eax |
138 | mov [ebx+list_bk], eax |
139 | mov [ebx+block_base], HEAP_BASE+4096*MEM_BLOCK_SIZE |
139 | mov [ebx+block_base], HEAP_BASE+4096*MEM_BLOCK_SIZE |
140 | 140 | ||
141 | mov ecx, [pg_data.kernel_pages] |
141 | mov ecx, [pg_data.kernel_pages] |
142 | shl ecx, 12 |
142 | shl ecx, 12 |
143 | sub ecx, HEAP_BASE-OS_BASE+4096*MEM_BLOCK_SIZE |
143 | sub ecx, HEAP_BASE-OS_BASE+4096*MEM_BLOCK_SIZE |
144 | mov [heap_size], ecx |
144 | mov [heap_size], ecx |
145 | mov [heap_free], ecx |
145 | mov [heap_free], ecx |
146 | mov [ebx+block_size], ecx |
146 | mov [ebx+block_size], ecx |
147 | mov [ebx+block_flags], FREE_BLOCK |
147 | mov [ebx+block_flags], FREE_BLOCK |
148 | 148 | ||
149 | mov [mem_block_mask], eax |
149 | mov [mem_block_mask], eax |
150 | mov [mem_block_mask+4],0x80000000 |
150 | mov [mem_block_mask+4],0x80000000 |
151 | 151 | ||
152 | mov [mem_block_list+63*4], ebx |
152 | mov [mem_block_list+63*4], ebx |
153 | mov byte [mem_block_map], 0xFC |
153 | mov byte [mem_block_map], 0xFC |
154 | and [heap_mutex], 0 |
154 | mov ecx, heap_mutex |
- | 155 | call mutex_init |
|
155 | mov [heap_blocks], 4095 |
156 | mov [heap_blocks], 4095 |
156 | mov [free_blocks], 4094 |
157 | mov [free_blocks], 4094 |
157 | ret |
158 | ret |
158 | endp |
159 | endp |
159 | 160 | ||
160 | ; param |
161 | ; param |
161 | ; eax= required size |
162 | ; eax= required size |
162 | ; |
163 | ; |
163 | ; retval |
164 | ; retval |
164 | ; edi= memory block descriptor |
165 | ; edi= memory block descriptor |
165 | ; ebx= descriptor index |
166 | ; ebx= descriptor index |
166 | 167 | ||
167 | align 4 |
168 | align 4 |
168 | get_small_block: |
169 | get_small_block: |
169 | mov ecx, eax |
170 | mov ecx, eax |
170 | shr ecx, 12 |
171 | shr ecx, 12 |
171 | dec ecx |
172 | dec ecx |
172 | cmp ecx, 63 |
173 | cmp ecx, 63 |
173 | jle .get_index |
174 | jle .get_index |
174 | mov ecx, 63 |
175 | mov ecx, 63 |
175 | .get_index: |
176 | .get_index: |
176 | lea esi, [mem_block_mask] |
177 | lea esi, [mem_block_mask] |
177 | xor ebx, ebx |
178 | xor ebx, ebx |
178 | or edx, -1 |
179 | or edx, -1 |
179 | 180 | ||
180 | cmp ecx, 32 |
181 | cmp ecx, 32 |
181 | jb .bit_test |
182 | jb .bit_test |
182 | 183 | ||
183 | sub ecx, 32 |
184 | sub ecx, 32 |
184 | add ebx, 32 |
185 | add ebx, 32 |
185 | add esi, 4 |
186 | add esi, 4 |
186 | .bit_test: |
187 | .bit_test: |
187 | shl edx, cl |
188 | shl edx, cl |
188 | and edx, [esi] |
189 | and edx, [esi] |
189 | .find: |
190 | .find: |
190 | bsf edi, edx |
191 | bsf edi, edx |
191 | jz .high_mask |
192 | jz .high_mask |
192 | add ebx, edi |
193 | add ebx, edi |
193 | mov edi, [mem_block_list+ebx*4] |
194 | mov edi, [mem_block_list+ebx*4] |
194 | .check_size: |
195 | .check_size: |
195 | cmp eax, [edi+block_size] |
196 | cmp eax, [edi+block_size] |
196 | ja .next |
197 | ja .next |
197 | ret |
198 | ret |
198 | 199 | ||
199 | .high_mask: |
200 | .high_mask: |
200 | add esi, 4 |
201 | add esi, 4 |
201 | cmp esi, mem_block_mask+8 |
202 | cmp esi, mem_block_mask+8 |
202 | jae .err |
203 | jae .err |
203 | add ebx, 32 |
204 | add ebx, 32 |
204 | mov edx, [esi] |
205 | mov edx, [esi] |
205 | jmp .find |
206 | jmp .find |
206 | .next: |
207 | .next: |
207 | mov edi, [edi+list_fd] |
208 | mov edi, [edi+list_fd] |
208 | test edi, edi |
209 | test edi, edi |
209 | jnz .check_size |
210 | jnz .check_size |
210 | .err: |
211 | .err: |
211 | xor edi, edi |
212 | xor edi, edi |
212 | ret |
213 | ret |
213 | 214 | ||
214 | align 4 |
215 | align 4 |
215 | alloc_mem_block: |
216 | alloc_mem_block: |
216 | 217 | ||
217 | mov ebx, [mem_block_start] |
218 | mov ebx, [mem_block_start] |
218 | mov ecx, [mem_block_end] |
219 | mov ecx, [mem_block_end] |
219 | .l1: |
220 | .l1: |
220 | bsf eax,[ebx]; |
221 | bsf eax,[ebx]; |
221 | jnz found |
222 | jnz found |
222 | add ebx,4 |
223 | add ebx,4 |
223 | cmp ebx, ecx |
224 | cmp ebx, ecx |
224 | jb .l1 |
225 | jb .l1 |
225 | xor eax,eax |
226 | xor eax,eax |
226 | ret |
227 | ret |
227 | 228 | ||
228 | found: |
229 | found: |
229 | btr [ebx], eax |
230 | btr [ebx], eax |
230 | mov [mem_block_start],ebx |
231 | mov [mem_block_start],ebx |
231 | sub ebx, mem_block_map |
232 | sub ebx, mem_block_map |
232 | lea eax,[eax+ebx*8] |
233 | lea eax,[eax+ebx*8] |
233 | shl eax, 5 |
234 | shl eax, 5 |
234 | add eax, [mem_block_arr] |
235 | add eax, [mem_block_arr] |
235 | dec [free_blocks] |
236 | dec [free_blocks] |
236 | ret |
237 | ret |
237 | align 4 |
238 | align 4 |
238 | free_mem_block: |
239 | free_mem_block: |
239 | mov dword [eax], 0 |
240 | mov dword [eax], 0 |
240 | mov dword [eax+4], 0 |
241 | mov dword [eax+4], 0 |
241 | mov dword [eax+8], 0 |
242 | mov dword [eax+8], 0 |
242 | mov dword [eax+12], 0 |
243 | mov dword [eax+12], 0 |
243 | mov dword [eax+16], 0 |
244 | mov dword [eax+16], 0 |
244 | ; mov dword [eax+20], 0 |
245 | ; mov dword [eax+20], 0 |
245 | mov dword [eax+24], 0 |
246 | mov dword [eax+24], 0 |
246 | mov dword [eax+28], 0 |
247 | mov dword [eax+28], 0 |
247 | 248 | ||
248 | sub eax, [mem_block_arr] |
249 | sub eax, [mem_block_arr] |
249 | shr eax, 5 |
250 | shr eax, 5 |
250 | 251 | ||
251 | mov ebx, mem_block_map |
252 | mov ebx, mem_block_map |
252 | bts [ebx], eax |
253 | bts [ebx], eax |
253 | inc [free_blocks] |
254 | inc [free_blocks] |
254 | shr eax, 3 |
255 | shr eax, 3 |
255 | and eax, not 3 |
256 | and eax, not 3 |
256 | add eax, ebx |
257 | add eax, ebx |
257 | cmp [mem_block_start], eax |
258 | cmp [mem_block_start], eax |
258 | ja @f |
259 | ja @f |
259 | ret |
260 | ret |
260 | @@: |
261 | @@: |
261 | mov [mem_block_start], eax |
262 | mov [mem_block_start], eax |
262 | ret |
263 | ret |
263 | .err: |
264 | .err: |
264 | xor eax, eax |
265 | xor eax, eax |
265 | ret |
266 | ret |
266 | 267 | ||
267 | align 4 |
268 | align 4 |
268 | proc alloc_kernel_space stdcall, size:dword |
269 | proc alloc_kernel_space stdcall, size:dword |
269 | local block_ind:DWORD |
270 | local block_ind:DWORD |
270 | 271 | ||
271 | push ebx |
272 | push ebx |
272 | push esi |
273 | push esi |
273 | push edi |
274 | push edi |
- | 275 | ||
- | 276 | mov ecx, heap_mutex |
|
- | 277 | call mutex_lock |
|
274 | 278 | ||
275 | mov eax, [size] |
279 | mov eax, [size] |
276 | add eax, 4095 |
280 | add eax, 4095 |
277 | and eax, not 4095 |
281 | and eax, not 4095 |
278 | mov [size], eax |
282 | mov [size], eax |
279 | - | ||
280 | mov ebx, heap_mutex |
- | |
281 | call wait_mutex ;ebx |
- | |
282 | 283 | ||
283 | cmp eax, [heap_free] |
284 | cmp eax, [heap_free] |
284 | ja .error |
285 | ja .error |
285 | 286 | ||
286 | call get_small_block ; eax |
287 | call get_small_block ; eax |
287 | test edi, edi |
288 | test edi, edi |
288 | jz .error |
289 | jz .error |
289 | 290 | ||
290 | cmp [edi+block_flags], FREE_BLOCK |
291 | cmp [edi+block_flags], FREE_BLOCK |
291 | jne .error |
292 | jne .error |
292 | 293 | ||
293 | mov [block_ind], ebx ;index of allocated block |
294 | mov [block_ind], ebx ;index of allocated block |
294 | 295 | ||
295 | mov eax, [edi+block_size] |
296 | mov eax, [edi+block_size] |
296 | cmp eax, [size] |
297 | cmp eax, [size] |
297 | je .m_eq_size |
298 | je .m_eq_size |
298 | 299 | ||
299 | call alloc_mem_block |
300 | call alloc_mem_block |
300 | and eax, eax |
301 | and eax, eax |
301 | jz .error |
302 | jz .error |
302 | 303 | ||
303 | mov esi, eax ;esi - splitted block |
304 | mov esi, eax ;esi - splitted block |
304 | 305 | ||
305 | mov [esi+block_next], edi |
306 | mov [esi+block_next], edi |
306 | mov eax, [edi+block_prev] |
307 | mov eax, [edi+block_prev] |
307 | mov [esi+block_prev], eax |
308 | mov [esi+block_prev], eax |
308 | mov [edi+block_prev], esi |
309 | mov [edi+block_prev], esi |
309 | mov [esi+list_fd], 0 |
310 | mov [esi+list_fd], 0 |
310 | mov [esi+list_bk], 0 |
311 | mov [esi+list_bk], 0 |
311 | and eax, eax |
312 | and eax, eax |
312 | jz @f |
313 | jz @f |
313 | mov [eax+block_next], esi |
314 | mov [eax+block_next], esi |
314 | @@: |
315 | @@: |
315 | mov ebx, [edi+block_base] |
316 | mov ebx, [edi+block_base] |
316 | mov [esi+block_base], ebx |
317 | mov [esi+block_base], ebx |
317 | mov edx, [size] |
318 | mov edx, [size] |
318 | mov [esi+block_size], edx |
319 | mov [esi+block_size], edx |
319 | add [edi+block_base], edx |
320 | add [edi+block_base], edx |
320 | sub [edi+block_size], edx |
321 | sub [edi+block_size], edx |
321 | 322 | ||
322 | mov eax, [edi+block_size] |
323 | mov eax, [edi+block_size] |
323 | shr eax, 12 |
324 | shr eax, 12 |
324 | sub eax, 1 |
325 | sub eax, 1 |
325 | cmp eax, 63 |
326 | cmp eax, 63 |
326 | jna @f |
327 | jna @f |
327 | mov eax, 63 |
328 | mov eax, 63 |
328 | @@: |
329 | @@: |
329 | cmp eax, [block_ind] |
330 | cmp eax, [block_ind] |
330 | je .m_eq_ind |
331 | je .m_eq_ind |
331 | 332 | ||
332 | remove_from_list edi |
333 | remove_from_list edi |
333 | 334 | ||
334 | mov ecx, [block_ind] |
335 | mov ecx, [block_ind] |
335 | mov [mem_block_list+ecx*4], edx |
336 | mov [mem_block_list+ecx*4], edx |
336 | 337 | ||
337 | test edx, edx |
338 | test edx, edx |
338 | jnz @f |
339 | jnz @f |
339 | btr [mem_block_mask], ecx |
340 | btr [mem_block_mask], ecx |
340 | @@: |
341 | @@: |
341 | mov edx, [mem_block_list+eax*4] |
342 | mov edx, [mem_block_list+eax*4] |
342 | mov [edi+list_fd], edx |
343 | mov [edi+list_fd], edx |
343 | test edx, edx |
344 | test edx, edx |
344 | jz @f |
345 | jz @f |
345 | mov [edx+list_bk], edi |
346 | mov [edx+list_bk], edi |
346 | @@: |
347 | @@: |
347 | mov [mem_block_list+eax*4], edi |
348 | mov [mem_block_list+eax*4], edi |
348 | bts [mem_block_mask], eax |
349 | bts [mem_block_mask], eax |
349 | .m_eq_ind: |
350 | .m_eq_ind: |
350 | mov ecx, mem_used.fd-MEM_LIST_OFFSET |
351 | mov ecx, mem_used.fd-MEM_LIST_OFFSET |
351 | mov edx, [ecx+list_fd] |
352 | mov edx, [ecx+list_fd] |
352 | mov [esi+list_fd], edx |
353 | mov [esi+list_fd], edx |
353 | mov [esi+list_bk], ecx |
354 | mov [esi+list_bk], ecx |
354 | mov [ecx+list_fd], esi |
355 | mov [ecx+list_fd], esi |
355 | mov [edx+list_bk], esi |
356 | mov [edx+list_bk], esi |
356 | 357 | ||
357 | mov [esi+block_flags], USED_BLOCK |
358 | mov [esi+block_flags], USED_BLOCK |
358 | mov eax, [esi+block_base] |
- | |
359 | mov ebx, [size] |
359 | mov ebx, [size] |
360 | sub [heap_free], ebx |
360 | sub [heap_free], ebx |
361 | and [heap_mutex], 0 |
361 | mov ecx, heap_mutex |
- | 362 | call mutex_unlock |
|
- | 363 | mov eax, [esi+block_base] |
|
362 | pop edi |
364 | pop edi |
363 | pop esi |
365 | pop esi |
364 | pop ebx |
366 | pop ebx |
365 | ret |
367 | ret |
366 | .m_eq_size: |
368 | .m_eq_size: |
367 | remove_from_list edi |
369 | remove_from_list edi |
368 | mov [mem_block_list+ebx*4], edx |
370 | mov [mem_block_list+ebx*4], edx |
369 | and edx, edx |
371 | and edx, edx |
370 | jnz @f |
372 | jnz @f |
371 | btr [mem_block_mask], ebx |
373 | btr [mem_block_mask], ebx |
372 | @@: |
374 | @@: |
373 | mov ecx, mem_used.fd-MEM_LIST_OFFSET |
375 | mov ecx, mem_used.fd-MEM_LIST_OFFSET |
374 | mov edx, [ecx+list_fd] |
376 | mov edx, [ecx+list_fd] |
375 | mov [edi+list_fd], edx |
377 | mov [edi+list_fd], edx |
376 | mov [edi+list_bk], ecx |
378 | mov [edi+list_bk], ecx |
377 | mov [ecx+list_fd], edi |
379 | mov [ecx+list_fd], edi |
378 | mov [edx+list_bk], edi |
380 | mov [edx+list_bk], edi |
379 | 381 | ||
380 | mov [edi+block_flags], USED_BLOCK |
382 | mov [edi+block_flags], USED_BLOCK |
381 | mov eax, [edi+block_base] |
- | |
382 | mov ebx, [size] |
383 | mov ebx, [size] |
383 | sub [heap_free], ebx |
384 | sub [heap_free], ebx |
384 | and [heap_mutex], 0 |
385 | mov ecx, heap_mutex |
- | 386 | call mutex_unlock |
|
- | 387 | mov eax, [edi+block_base] |
|
385 | pop edi |
388 | pop edi |
386 | pop esi |
389 | pop esi |
387 | pop ebx |
390 | pop ebx |
388 | ret |
391 | ret |
389 | .error: |
392 | .error: |
- | 393 | mov ecx, heap_mutex |
|
- | 394 | call mutex_unlock |
|
390 | xor eax, eax |
395 | xor eax, eax |
391 | mov [heap_mutex], eax |
- | |
392 | pop edi |
396 | pop edi |
393 | pop esi |
397 | pop esi |
394 | pop ebx |
398 | pop ebx |
395 | ret |
399 | ret |
396 | endp |
400 | endp |
397 | 401 | ||
398 | align 4 |
402 | align 4 |
399 | proc free_kernel_space stdcall uses ebx ecx edx esi edi, base:dword |
403 | proc free_kernel_space stdcall uses ebx ecx edx esi edi, base:dword |
400 | push ebx |
404 | push ebx |
401 | push esi |
405 | push esi |
402 | push edi |
406 | push edi |
- | 407 | ||
403 | mov ebx, heap_mutex |
408 | mov ecx, heap_mutex |
404 | call wait_mutex ;ebx |
409 | call mutex_lock |
405 | 410 | ||
406 | mov eax, [base] |
411 | mov eax, [base] |
407 | mov esi, [mem_used.fd] |
412 | mov esi, [mem_used.fd] |
408 | @@: |
413 | @@: |
409 | cmp esi, mem_used.fd-MEM_LIST_OFFSET |
414 | cmp esi, mem_used.fd-MEM_LIST_OFFSET |
410 | je .fail |
415 | je .fail |
411 | 416 | ||
412 | cmp [esi+block_base], eax |
417 | cmp [esi+block_base], eax |
413 | je .found |
418 | je .found |
414 | mov esi, [esi+list_fd] |
419 | mov esi, [esi+list_fd] |
415 | jmp @b |
420 | jmp @b |
416 | .found: |
421 | .found: |
417 | cmp [esi+block_flags], USED_BLOCK |
422 | cmp [esi+block_flags], USED_BLOCK |
418 | jne .fail |
423 | jne .fail |
419 | 424 | ||
420 | mov eax, [esi+block_size] |
425 | mov eax, [esi+block_size] |
421 | add [heap_free], eax |
426 | add [heap_free], eax |
422 | 427 | ||
423 | mov edi, [esi+block_next] |
428 | mov edi, [esi+block_next] |
424 | test edi, edi |
429 | test edi, edi |
425 | jz .prev |
430 | jz .prev |
426 | 431 | ||
427 | cmp [edi+block_flags], FREE_BLOCK |
432 | cmp [edi+block_flags], FREE_BLOCK |
428 | jne .prev |
433 | jne .prev |
429 | 434 | ||
430 | remove_from_free edi |
435 | remove_from_free edi |
431 | 436 | ||
432 | mov edx, [edi+block_next] |
437 | mov edx, [edi+block_next] |
433 | mov [esi+block_next], edx |
438 | mov [esi+block_next], edx |
434 | test edx, edx |
439 | test edx, edx |
435 | jz @f |
440 | jz @f |
436 | 441 | ||
437 | mov [edx+block_prev], esi |
442 | mov [edx+block_prev], esi |
438 | @@: |
443 | @@: |
439 | mov ecx, [edi+block_size] |
444 | mov ecx, [edi+block_size] |
440 | add [esi+block_size], ecx |
445 | add [esi+block_size], ecx |
441 | 446 | ||
442 | mov eax, edi |
447 | mov eax, edi |
443 | call free_mem_block |
448 | call free_mem_block |
444 | .prev: |
449 | .prev: |
445 | mov edi, [esi+block_prev] |
450 | mov edi, [esi+block_prev] |
446 | test edi, edi |
451 | test edi, edi |
447 | jz .insert |
452 | jz .insert |
448 | 453 | ||
449 | cmp [edi+block_flags], FREE_BLOCK |
454 | cmp [edi+block_flags], FREE_BLOCK |
450 | jne .insert |
455 | jne .insert |
451 | 456 | ||
452 | remove_from_used esi |
457 | remove_from_used esi |
453 | 458 | ||
454 | mov edx, [esi+block_next] |
459 | mov edx, [esi+block_next] |
455 | mov [edi+block_next], edx |
460 | mov [edi+block_next], edx |
456 | test edx, edx |
461 | test edx, edx |
457 | jz @f |
462 | jz @f |
458 | mov [edx+block_prev], edi |
463 | mov [edx+block_prev], edi |
459 | @@: |
464 | @@: |
460 | mov eax, esi |
465 | mov eax, esi |
461 | call free_mem_block |
466 | call free_mem_block |
462 | 467 | ||
463 | mov ecx, [edi+block_size] |
468 | mov ecx, [edi+block_size] |
464 | mov eax, [esi+block_size] |
469 | mov eax, [esi+block_size] |
465 | add eax, ecx |
470 | add eax, ecx |
466 | mov [edi+block_size], eax |
471 | mov [edi+block_size], eax |
467 | 472 | ||
468 | calc_index eax |
473 | calc_index eax |
469 | calc_index ecx |
474 | calc_index ecx |
470 | cmp eax, ecx |
475 | cmp eax, ecx |
471 | je .m_eq |
476 | je .m_eq |
472 | 477 | ||
473 | push ecx |
478 | push ecx |
474 | remove_from_list edi |
479 | remove_from_list edi |
475 | pop ecx |
480 | pop ecx |
476 | 481 | ||
477 | cmp [mem_block_list+ecx*4], edi |
482 | cmp [mem_block_list+ecx*4], edi |
478 | jne @f |
483 | jne @f |
479 | mov [mem_block_list+ecx*4], edx |
484 | mov [mem_block_list+ecx*4], edx |
480 | @@: |
485 | @@: |
481 | cmp [mem_block_list+ecx*4], 0 |
486 | cmp [mem_block_list+ecx*4], 0 |
482 | jne @f |
487 | jne @f |
483 | btr [mem_block_mask], ecx |
488 | btr [mem_block_mask], ecx |
484 | @@: |
489 | @@: |
485 | mov esi, [mem_block_list+eax*4] |
490 | mov esi, [mem_block_list+eax*4] |
486 | mov [mem_block_list+eax*4], edi |
491 | mov [mem_block_list+eax*4], edi |
487 | mov [edi+list_fd], esi |
492 | mov [edi+list_fd], esi |
488 | test esi, esi |
493 | test esi, esi |
489 | jz @f |
494 | jz @f |
490 | mov [esi+list_bk], edi |
495 | mov [esi+list_bk], edi |
491 | @@: |
496 | @@: |
492 | bts [mem_block_mask], eax |
497 | bts [mem_block_mask], eax |
493 | .m_eq: |
498 | .m_eq: |
- | 499 | mov ecx, heap_mutex |
|
- | 500 | call mutex_unlock |
|
494 | xor eax, eax |
501 | xor eax, eax |
495 | mov [heap_mutex], eax |
- | |
496 | dec eax |
502 | not eax |
497 | pop edi |
503 | pop edi |
498 | pop esi |
504 | pop esi |
499 | pop ebx |
505 | pop ebx |
500 | ret |
506 | ret |
501 | .insert: |
507 | .insert: |
502 | remove_from_used esi |
508 | remove_from_used esi |
503 | 509 | ||
504 | mov eax, [esi+block_size] |
510 | mov eax, [esi+block_size] |
505 | calc_index eax |
511 | calc_index eax |
506 | 512 | ||
507 | mov edi, [mem_block_list+eax*4] |
513 | mov edi, [mem_block_list+eax*4] |
508 | mov [mem_block_list+eax*4], esi |
514 | mov [mem_block_list+eax*4], esi |
509 | mov [esi+list_fd], edi |
515 | mov [esi+list_fd], edi |
510 | test edi, edi |
516 | test edi, edi |
511 | jz @f |
517 | jz @f |
512 | mov [edi+list_bk], esi |
518 | mov [edi+list_bk], esi |
513 | @@: |
519 | @@: |
514 | bts [mem_block_mask], eax |
520 | bts [mem_block_mask], eax |
515 | mov [esi+block_flags],FREE_BLOCK |
521 | mov [esi+block_flags],FREE_BLOCK |
- | 522 | mov ecx, heap_mutex |
|
- | 523 | call mutex_unlock |
|
516 | xor eax, eax |
524 | xor eax, eax |
517 | mov [heap_mutex], eax |
- | |
518 | dec eax |
525 | not eax |
519 | pop edi |
526 | pop edi |
520 | pop esi |
527 | pop esi |
521 | pop ebx |
528 | pop ebx |
522 | ret |
529 | ret |
523 | .fail: |
530 | .fail: |
- | 531 | mov ecx, heap_mutex |
|
- | 532 | call mutex_unlock |
|
524 | xor eax, eax |
533 | xor eax, eax |
525 | mov [heap_mutex], eax |
- | |
526 | pop edi |
534 | pop edi |
527 | pop esi |
535 | pop esi |
528 | pop ebx |
536 | pop ebx |
529 | ret |
537 | ret |
530 | endp |
538 | endp |
531 | 539 | ||
532 | align 4 |
540 | align 4 |
533 | proc kernel_alloc stdcall, size:dword |
541 | proc kernel_alloc stdcall, size:dword |
534 | locals |
542 | locals |
535 | lin_addr dd ? |
543 | lin_addr dd ? |
536 | pages_count dd ? |
544 | pages_count dd ? |
537 | endl |
545 | endl |
538 | 546 | ||
539 | push ebx |
547 | push ebx |
540 | push edi |
548 | push edi |
541 | 549 | ||
542 | mov eax, [size] |
550 | mov eax, [size] |
543 | add eax, 4095 |
551 | add eax, 4095 |
544 | and eax, not 4095; |
552 | and eax, not 4095; |
545 | mov [size], eax |
553 | mov [size], eax |
546 | and eax, eax |
554 | and eax, eax |
547 | jz .err |
555 | jz .err |
548 | mov ebx, eax |
556 | mov ebx, eax |
549 | shr ebx, 12 |
557 | shr ebx, 12 |
550 | mov [pages_count], ebx |
558 | mov [pages_count], ebx |
551 | 559 | ||
552 | stdcall alloc_kernel_space, eax |
560 | stdcall alloc_kernel_space, eax |
553 | test eax, eax |
561 | test eax, eax |
554 | jz .err |
562 | jz .err |
555 | mov [lin_addr], eax |
563 | mov [lin_addr], eax |
556 | 564 | ||
557 | mov ecx, [pages_count] |
565 | mov ecx, [pages_count] |
558 | mov edx, eax |
566 | mov edx, eax |
559 | mov ebx, ecx |
567 | mov ebx, ecx |
560 | 568 | ||
561 | shr ecx, 3 |
569 | shr ecx, 3 |
562 | jz .next |
570 | jz .next |
563 | 571 | ||
564 | and ebx, not 7 |
572 | and ebx, not 7 |
565 | push ebx |
573 | push ebx |
566 | stdcall alloc_pages, ebx |
574 | stdcall alloc_pages, ebx |
567 | pop ecx ; yes ecx!!! |
575 | pop ecx ; yes ecx!!! |
568 | and eax, eax |
576 | and eax, eax |
569 | jz .err |
577 | jz .err |
570 | 578 | ||
571 | mov edi, eax |
579 | mov edi, eax |
572 | mov edx, [lin_addr] |
580 | mov edx, [lin_addr] |
573 | @@: |
581 | @@: |
574 | stdcall map_page,edx,edi,dword PG_SW |
582 | stdcall map_page,edx,edi,dword PG_SW |
575 | add edx, 0x1000 |
583 | add edx, 0x1000 |
576 | add edi, 0x1000 |
584 | add edi, 0x1000 |
577 | dec ecx |
585 | dec ecx |
578 | jnz @B |
586 | jnz @B |
579 | .next: |
587 | .next: |
580 | mov ecx, [pages_count] |
588 | mov ecx, [pages_count] |
581 | and ecx, 7 |
589 | and ecx, 7 |
582 | jz .end |
590 | jz .end |
583 | @@: |
591 | @@: |
584 | push ecx |
592 | push ecx |
585 | call alloc_page |
593 | call alloc_page |
586 | pop ecx |
594 | pop ecx |
587 | test eax, eax |
595 | test eax, eax |
588 | jz .err |
596 | jz .err |
589 | 597 | ||
590 | stdcall map_page,edx,eax,dword PG_SW |
598 | stdcall map_page,edx,eax,dword PG_SW |
591 | add edx, 0x1000 |
599 | add edx, 0x1000 |
592 | dec ecx |
600 | dec ecx |
593 | jnz @B |
601 | jnz @B |
594 | .end: |
602 | .end: |
595 | mov eax, [lin_addr] |
603 | mov eax, [lin_addr] |
596 | pop edi |
604 | pop edi |
597 | pop ebx |
605 | pop ebx |
598 | ret |
606 | ret |
599 | .err: |
607 | .err: |
600 | xor eax, eax |
608 | xor eax, eax |
601 | pop edi |
609 | pop edi |
602 | pop ebx |
610 | pop ebx |
603 | ret |
611 | ret |
604 | endp |
612 | endp |
605 | 613 | ||
606 | align 4 |
614 | align 4 |
607 | proc kernel_free stdcall, base:dword |
615 | proc kernel_free stdcall, base:dword |
608 | push ebx esi |
616 | push ebx esi |
609 | 617 | ||
610 | mov ebx, heap_mutex |
618 | mov ecx, heap_mutex |
611 | call wait_mutex ;ebx |
619 | call mutex_lock |
612 | 620 | ||
613 | mov eax, [base] |
621 | mov eax, [base] |
614 | mov esi, [mem_used.fd] |
622 | mov esi, [mem_used.fd] |
615 | @@: |
623 | @@: |
616 | cmp esi, mem_used.fd-MEM_LIST_OFFSET |
624 | cmp esi, mem_used.fd-MEM_LIST_OFFSET |
617 | je .fail |
625 | je .fail |
618 | 626 | ||
619 | cmp [esi+block_base], eax |
627 | cmp [esi+block_base], eax |
620 | je .found |
628 | je .found |
621 | mov esi, [esi+list_fd] |
629 | mov esi, [esi+list_fd] |
622 | jmp @b |
630 | jmp @b |
623 | .found: |
631 | .found: |
624 | cmp [esi+block_flags], USED_BLOCK |
632 | cmp [esi+block_flags], USED_BLOCK |
625 | jne .fail |
633 | jne .fail |
626 | 634 | ||
627 | and [heap_mutex], 0 |
- | |
628 | 635 | call mutex_unlock |
|
629 | push ecx |
636 | |
630 | mov ecx, [esi+block_size]; |
637 | mov ecx, [esi+block_size]; |
631 | shr ecx, 12 |
638 | shr ecx, 12 |
632 | call release_pages ;eax, ecx |
639 | call release_pages ;eax, ecx |
633 | pop ecx |
- | |
634 | stdcall free_kernel_space, [base] |
640 | stdcall free_kernel_space, [base] |
635 | pop esi ebx |
641 | pop esi ebx |
636 | ret |
642 | ret |
637 | .fail: |
643 | .fail: |
- | 644 | call mutex_unlock |
|
638 | xor eax, eax |
645 | xor eax, eax |
639 | mov [heap_mutex], eax |
- | |
640 | pop esi ebx |
646 | pop esi ebx |
641 | ret |
647 | ret |
642 | endp |
648 | endp |
643 | 649 | ||
644 | restore block_next |
650 | restore block_next |
645 | restore block_prev |
651 | restore block_prev |
646 | restore block_list |
652 | restore block_list |
647 | restore block_base |
653 | restore block_base |
648 | restore block_size |
654 | restore block_size |
649 | restore block_flags |
655 | restore block_flags |
650 | 656 | ||
651 | ;;;;;;;;;;;;;; USER ;;;;;;;;;;;;;;;;; |
657 | ;;;;;;;;;;;;;; USER ;;;;;;;;;;;;;;;;; |
652 | 658 | ||
653 | HEAP_TOP equ 0x5FC00000 |
659 | HEAP_TOP equ 0x5FC00000 |
654 | 660 | ||
655 | align 4 |
661 | align 4 |
656 | proc init_heap |
662 | proc init_heap |
657 | 663 | ||
658 | mov ebx,[current_slot] |
664 | mov ebx,[current_slot] |
659 | mov eax, [ebx+APPDATA.heap_top] |
665 | mov eax, [ebx+APPDATA.heap_top] |
660 | test eax, eax |
666 | test eax, eax |
661 | jz @F |
667 | jz @F |
662 | sub eax,[ebx+APPDATA.heap_base] |
668 | sub eax,[ebx+APPDATA.heap_base] |
663 | sub eax, 4096 |
669 | sub eax, 4096 |
664 | ret |
670 | ret |
665 | @@: |
671 | @@: |
666 | mov esi, [ebx+APPDATA.mem_size] |
672 | mov esi, [ebx+APPDATA.mem_size] |
667 | add esi, 4095 |
673 | add esi, 4095 |
668 | and esi, not 4095 |
674 | and esi, not 4095 |
669 | mov [ebx+APPDATA.mem_size], esi |
675 | mov [ebx+APPDATA.mem_size], esi |
670 | mov eax, HEAP_TOP |
676 | mov eax, HEAP_TOP |
671 | mov [ebx+APPDATA.heap_base], esi |
677 | mov [ebx+APPDATA.heap_base], esi |
672 | mov [ebx+APPDATA.heap_top], eax |
678 | mov [ebx+APPDATA.heap_top], eax |
673 | 679 | ||
674 | sub eax, esi |
680 | sub eax, esi |
675 | shr esi, 10 |
681 | shr esi, 10 |
676 | mov ecx, eax |
682 | mov ecx, eax |
677 | sub eax, 4096 |
683 | sub eax, 4096 |
678 | or ecx, FREE_BLOCK |
684 | or ecx, FREE_BLOCK |
679 | mov [page_tabs+esi], ecx |
685 | mov [page_tabs+esi], ecx |
680 | ret |
686 | ret |
681 | endp |
687 | endp |
682 | 688 | ||
683 | align 4 |
689 | align 4 |
684 | proc user_alloc stdcall, alloc_size:dword |
690 | proc user_alloc stdcall, alloc_size:dword |
685 | 691 | ||
686 | push ebx |
692 | push ebx |
687 | push esi |
693 | push esi |
688 | push edi |
694 | push edi |
689 | 695 | ||
690 | mov ecx, [alloc_size] |
696 | mov ecx, [alloc_size] |
691 | add ecx, (4095+4096) |
697 | add ecx, (4095+4096) |
692 | and ecx, not 4095 |
698 | and ecx, not 4095 |
693 | 699 | ||
694 | mov ebx, [current_slot] |
700 | mov ebx, [current_slot] |
695 | mov esi, dword [ebx+APPDATA.heap_base] ; heap_base |
701 | mov esi, dword [ebx+APPDATA.heap_base] ; heap_base |
696 | mov edi, dword [ebx+APPDATA.heap_top] ; heap_top |
702 | mov edi, dword [ebx+APPDATA.heap_top] ; heap_top |
697 | l_0: |
703 | l_0: |
698 | cmp esi, edi |
704 | cmp esi, edi |
699 | jae m_exit |
705 | jae m_exit |
700 | 706 | ||
701 | mov ebx, esi |
707 | mov ebx, esi |
702 | shr ebx, 12 |
708 | shr ebx, 12 |
703 | mov eax, [page_tabs+ebx*4] |
709 | mov eax, [page_tabs+ebx*4] |
704 | test al, FREE_BLOCK |
710 | test al, FREE_BLOCK |
705 | jz test_used |
711 | jz test_used |
706 | and eax, 0xFFFFF000 |
712 | and eax, 0xFFFFF000 |
707 | cmp eax, ecx ;alloc_size |
713 | cmp eax, ecx ;alloc_size |
708 | jb m_next |
714 | jb m_next |
709 | jz @f |
715 | jz @f |
710 | 716 | ||
711 | lea edx, [esi+ecx] |
717 | lea edx, [esi+ecx] |
712 | sub eax, ecx |
718 | sub eax, ecx |
713 | or al, FREE_BLOCK |
719 | or al, FREE_BLOCK |
714 | shr edx, 12 |
720 | shr edx, 12 |
715 | mov [page_tabs+edx*4], eax |
721 | mov [page_tabs+edx*4], eax |
716 | @@: |
722 | @@: |
717 | or ecx, USED_BLOCK |
723 | or ecx, USED_BLOCK |
718 | mov [page_tabs+ebx*4], ecx |
724 | mov [page_tabs+ebx*4], ecx |
719 | shr ecx, 12 |
725 | shr ecx, 12 |
720 | inc ebx |
726 | inc ebx |
721 | dec ecx |
727 | dec ecx |
722 | jz .no |
728 | jz .no |
723 | @@: |
729 | @@: |
724 | mov dword [page_tabs+ebx*4], 2 |
730 | mov dword [page_tabs+ebx*4], 2 |
725 | inc ebx |
731 | inc ebx |
726 | dec ecx |
732 | dec ecx |
727 | jnz @B |
733 | jnz @B |
728 | .no: |
734 | .no: |
729 | 735 | ||
730 | mov edx, [current_slot] |
736 | mov edx, [current_slot] |
731 | mov ebx, [alloc_size] |
737 | mov ebx, [alloc_size] |
732 | add ebx, 0xFFF |
738 | add ebx, 0xFFF |
733 | and ebx, not 0xFFF |
739 | and ebx, not 0xFFF |
734 | add ebx, [edx+APPDATA.mem_size] |
740 | add ebx, [edx+APPDATA.mem_size] |
735 | call update_mem_size |
741 | call update_mem_size |
736 | 742 | ||
737 | lea eax, [esi+4096] |
743 | lea eax, [esi+4096] |
738 | 744 | ||
739 | pop edi |
745 | pop edi |
740 | pop esi |
746 | pop esi |
741 | pop ebx |
747 | pop ebx |
742 | ret |
748 | ret |
743 | test_used: |
749 | test_used: |
744 | test al, USED_BLOCK |
750 | test al, USED_BLOCK |
745 | jz m_exit |
751 | jz m_exit |
746 | 752 | ||
747 | and eax, 0xFFFFF000 |
753 | and eax, 0xFFFFF000 |
748 | m_next: |
754 | m_next: |
749 | add esi, eax |
755 | add esi, eax |
750 | jmp l_0 |
756 | jmp l_0 |
751 | m_exit: |
757 | m_exit: |
752 | xor eax, eax |
758 | xor eax, eax |
753 | pop edi |
759 | pop edi |
754 | pop esi |
760 | pop esi |
755 | pop ebx |
761 | pop ebx |
756 | ret |
762 | ret |
757 | endp |
763 | endp |
758 | 764 | ||
759 | align 4 |
765 | align 4 |
760 | proc user_alloc_at stdcall, address:dword, alloc_size:dword |
766 | proc user_alloc_at stdcall, address:dword, alloc_size:dword |
761 | 767 | ||
762 | push ebx |
768 | push ebx |
763 | push esi |
769 | push esi |
764 | push edi |
770 | push edi |
765 | 771 | ||
766 | mov ebx, [current_slot] |
772 | mov ebx, [current_slot] |
767 | mov edx, [address] |
773 | mov edx, [address] |
768 | and edx, not 0xFFF |
774 | and edx, not 0xFFF |
769 | mov [address], edx |
775 | mov [address], edx |
770 | sub edx, 0x1000 |
776 | sub edx, 0x1000 |
771 | jb .error |
777 | jb .error |
772 | mov esi, [ebx+APPDATA.heap_base] |
778 | mov esi, [ebx+APPDATA.heap_base] |
773 | mov edi, [ebx+APPDATA.heap_top] |
779 | mov edi, [ebx+APPDATA.heap_top] |
774 | cmp edx, esi |
780 | cmp edx, esi |
775 | jb .error |
781 | jb .error |
776 | .scan: |
782 | .scan: |
777 | cmp esi, edi |
783 | cmp esi, edi |
778 | jae .error |
784 | jae .error |
779 | mov ebx, esi |
785 | mov ebx, esi |
780 | shr ebx, 12 |
786 | shr ebx, 12 |
781 | mov eax, [page_tabs+ebx*4] |
787 | mov eax, [page_tabs+ebx*4] |
782 | mov ecx, eax |
788 | mov ecx, eax |
783 | and ecx, 0xFFFFF000 |
789 | and ecx, 0xFFFFF000 |
784 | add ecx, esi |
790 | add ecx, esi |
785 | cmp edx, ecx |
791 | cmp edx, ecx |
786 | jb .found |
792 | jb .found |
787 | mov esi, ecx |
793 | mov esi, ecx |
788 | jmp .scan |
794 | jmp .scan |
789 | .error: |
795 | .error: |
790 | xor eax, eax |
796 | xor eax, eax |
791 | pop edi |
797 | pop edi |
792 | pop esi |
798 | pop esi |
793 | pop ebx |
799 | pop ebx |
794 | ret |
800 | ret |
795 | .found: |
801 | .found: |
796 | test al, FREE_BLOCK |
802 | test al, FREE_BLOCK |
797 | jz .error |
803 | jz .error |
798 | mov eax, ecx |
804 | mov eax, ecx |
799 | sub eax, edx |
805 | sub eax, edx |
800 | sub eax, 0x1000 |
806 | sub eax, 0x1000 |
801 | cmp eax, [alloc_size] |
807 | cmp eax, [alloc_size] |
802 | jb .error |
808 | jb .error |
803 | 809 | ||
804 | ; Here we have 1 big free block which includes requested area. |
810 | ; Here we have 1 big free block which includes requested area. |
805 | ; In general, 3 other blocks must be created instead: |
811 | ; In general, 3 other blocks must be created instead: |
806 | ; free at [esi, edx); |
812 | ; free at [esi, edx); |
807 | ; busy at [edx, edx+0x1000+ALIGN_UP(alloc_size,0x1000)); |
813 | ; busy at [edx, edx+0x1000+ALIGN_UP(alloc_size,0x1000)); |
808 | ; free at [edx+0x1000+ALIGN_UP(alloc_size,0x1000), ecx) |
814 | ; free at [edx+0x1000+ALIGN_UP(alloc_size,0x1000), ecx) |
809 | ; First or third block (or both) may be absent. |
815 | ; First or third block (or both) may be absent. |
810 | mov eax, edx |
816 | mov eax, edx |
811 | sub eax, esi |
817 | sub eax, esi |
812 | jz .nofirst |
818 | jz .nofirst |
813 | or al, FREE_BLOCK |
819 | or al, FREE_BLOCK |
814 | mov [page_tabs+ebx*4], eax |
820 | mov [page_tabs+ebx*4], eax |
815 | .nofirst: |
821 | .nofirst: |
816 | mov eax, [alloc_size] |
822 | mov eax, [alloc_size] |
817 | add eax, 0x1FFF |
823 | add eax, 0x1FFF |
818 | and eax, not 0xFFF |
824 | and eax, not 0xFFF |
819 | mov ebx, edx |
825 | mov ebx, edx |
820 | add edx, eax |
826 | add edx, eax |
821 | shr ebx, 12 |
827 | shr ebx, 12 |
822 | or al, USED_BLOCK |
828 | or al, USED_BLOCK |
823 | mov [page_tabs+ebx*4], eax |
829 | mov [page_tabs+ebx*4], eax |
824 | shr eax, 12 |
830 | shr eax, 12 |
825 | dec eax |
831 | dec eax |
826 | jz .second_nofill |
832 | jz .second_nofill |
827 | inc ebx |
833 | inc ebx |
828 | .fill: |
834 | .fill: |
829 | mov dword [page_tabs+ebx*4], 2 |
835 | mov dword [page_tabs+ebx*4], 2 |
830 | inc ebx |
836 | inc ebx |
831 | dec eax |
837 | dec eax |
832 | jnz .fill |
838 | jnz .fill |
833 | .second_nofill: |
839 | .second_nofill: |
834 | sub ecx, edx |
840 | sub ecx, edx |
835 | jz .nothird |
841 | jz .nothird |
836 | or cl, FREE_BLOCK |
842 | or cl, FREE_BLOCK |
837 | mov [page_tabs+ebx*4], ecx |
843 | mov [page_tabs+ebx*4], ecx |
838 | .nothird: |
844 | .nothird: |
839 | 845 | ||
840 | mov edx, [current_slot] |
846 | mov edx, [current_slot] |
841 | mov ebx, [alloc_size] |
847 | mov ebx, [alloc_size] |
842 | add ebx, 0xFFF |
848 | add ebx, 0xFFF |
843 | and ebx, not 0xFFF |
849 | and ebx, not 0xFFF |
844 | add ebx, [edx+APPDATA.mem_size] |
850 | add ebx, [edx+APPDATA.mem_size] |
845 | call update_mem_size |
851 | call update_mem_size |
846 | 852 | ||
847 | mov eax, [address] |
853 | mov eax, [address] |
848 | 854 | ||
849 | pop edi |
855 | pop edi |
850 | pop esi |
856 | pop esi |
851 | pop ebx |
857 | pop ebx |
852 | ret |
858 | ret |
853 | endp |
859 | endp |
854 | 860 | ||
855 | align 4 |
861 | align 4 |
856 | proc user_free stdcall, base:dword |
862 | proc user_free stdcall, base:dword |
857 | 863 | ||
858 | push esi |
864 | push esi |
859 | 865 | ||
860 | mov esi, [base] |
866 | mov esi, [base] |
861 | test esi, esi |
867 | test esi, esi |
862 | jz .exit |
868 | jz .exit |
863 | 869 | ||
864 | push ebx |
870 | push ebx |
865 | 871 | ||
866 | xor ebx, ebx |
872 | xor ebx, ebx |
867 | shr esi, 12 |
873 | shr esi, 12 |
868 | mov eax, [page_tabs+(esi-1)*4] |
874 | mov eax, [page_tabs+(esi-1)*4] |
869 | test al, USED_BLOCK |
875 | test al, USED_BLOCK |
870 | jz .cantfree |
876 | jz .cantfree |
871 | test al, DONT_FREE_BLOCK |
877 | test al, DONT_FREE_BLOCK |
872 | jnz .cantfree |
878 | jnz .cantfree |
873 | 879 | ||
874 | and eax, not 4095 |
880 | and eax, not 4095 |
875 | mov ecx, eax |
881 | mov ecx, eax |
876 | or al, FREE_BLOCK |
882 | or al, FREE_BLOCK |
877 | mov [page_tabs+(esi-1)*4], eax |
883 | mov [page_tabs+(esi-1)*4], eax |
878 | sub ecx, 4096 |
884 | sub ecx, 4096 |
879 | mov ebx, ecx |
885 | mov ebx, ecx |
880 | shr ecx, 12 |
886 | shr ecx, 12 |
881 | jz .released |
887 | jz .released |
882 | .release: |
888 | .release: |
883 | xor eax, eax |
889 | xor eax, eax |
884 | xchg eax, [page_tabs+esi*4] |
890 | xchg eax, [page_tabs+esi*4] |
885 | test al, 1 |
891 | test al, 1 |
886 | jz @F |
892 | jz @F |
887 | test eax, PG_SHARED |
893 | test eax, PG_SHARED |
888 | jnz @F |
894 | jnz @F |
889 | call free_page |
895 | call free_page |
890 | mov eax, esi |
896 | mov eax, esi |
891 | shl eax, 12 |
897 | shl eax, 12 |
892 | invlpg [eax] |
898 | invlpg [eax] |
893 | @@: |
899 | @@: |
894 | inc esi |
900 | inc esi |
895 | dec ecx |
901 | dec ecx |
896 | jnz .release |
902 | jnz .release |
897 | .released: |
903 | .released: |
898 | push edi |
904 | push edi |
899 | 905 | ||
900 | mov edx, [current_slot] |
906 | mov edx, [current_slot] |
901 | mov esi, dword [edx+APPDATA.heap_base] |
907 | mov esi, dword [edx+APPDATA.heap_base] |
902 | mov edi, dword [edx+APPDATA.heap_top] |
908 | mov edi, dword [edx+APPDATA.heap_top] |
903 | sub ebx, [edx+APPDATA.mem_size] |
909 | sub ebx, [edx+APPDATA.mem_size] |
904 | neg ebx |
910 | neg ebx |
905 | call update_mem_size |
911 | call update_mem_size |
906 | call user_normalize |
912 | call user_normalize |
907 | pop edi |
913 | pop edi |
908 | pop ebx |
914 | pop ebx |
909 | pop esi |
915 | pop esi |
910 | ret |
916 | ret |
911 | .exit: |
917 | .exit: |
912 | xor eax, eax |
918 | xor eax, eax |
913 | inc eax |
919 | inc eax |
914 | pop esi |
920 | pop esi |
915 | ret |
921 | ret |
916 | .cantfree: |
922 | .cantfree: |
917 | xor eax, eax |
923 | xor eax, eax |
918 | pop ebx |
924 | pop ebx |
919 | pop esi |
925 | pop esi |
920 | ret |
926 | ret |
921 | endp |
927 | endp |
922 | 928 | ||
923 | user_normalize: |
929 | user_normalize: |
924 | ; in: esi=heap_base, edi=heap_top |
930 | ; in: esi=heap_base, edi=heap_top |
925 | ; out: eax=0 <=> OK |
931 | ; out: eax=0 <=> OK |
926 | ; destroys: ebx,edx,esi,edi |
932 | ; destroys: ebx,edx,esi,edi |
927 | shr esi, 12 |
933 | shr esi, 12 |
928 | shr edi, 12 |
934 | shr edi, 12 |
929 | @@: |
935 | @@: |
930 | mov eax, [page_tabs+esi*4] |
936 | mov eax, [page_tabs+esi*4] |
931 | test al, USED_BLOCK |
937 | test al, USED_BLOCK |
932 | jz .test_free |
938 | jz .test_free |
933 | shr eax, 12 |
939 | shr eax, 12 |
934 | add esi, eax |
940 | add esi, eax |
935 | jmp @B |
941 | jmp @B |
936 | .test_free: |
942 | .test_free: |
937 | test al, FREE_BLOCK |
943 | test al, FREE_BLOCK |
938 | jz .err |
944 | jz .err |
939 | mov edx, eax |
945 | mov edx, eax |
940 | shr edx, 12 |
946 | shr edx, 12 |
941 | add edx, esi |
947 | add edx, esi |
942 | cmp edx, edi |
948 | cmp edx, edi |
943 | jae .exit |
949 | jae .exit |
944 | 950 | ||
945 | mov ebx, [page_tabs+edx*4] |
951 | mov ebx, [page_tabs+edx*4] |
946 | test bl, USED_BLOCK |
952 | test bl, USED_BLOCK |
947 | jz .next_free |
953 | jz .next_free |
948 | 954 | ||
949 | shr ebx, 12 |
955 | shr ebx, 12 |
950 | add edx, ebx |
956 | add edx, ebx |
951 | mov esi, edx |
957 | mov esi, edx |
952 | jmp @B |
958 | jmp @B |
953 | .next_free: |
959 | .next_free: |
954 | test bl, FREE_BLOCK |
960 | test bl, FREE_BLOCK |
955 | jz .err |
961 | jz .err |
956 | and dword [page_tabs+edx*4], 0 |
962 | and dword [page_tabs+edx*4], 0 |
957 | add eax, ebx |
963 | add eax, ebx |
958 | and eax, not 4095 |
964 | and eax, not 4095 |
959 | or eax, FREE_BLOCK |
965 | or eax, FREE_BLOCK |
960 | mov [page_tabs+esi*4], eax |
966 | mov [page_tabs+esi*4], eax |
961 | jmp @B |
967 | jmp @B |
962 | .exit: |
968 | .exit: |
963 | xor eax, eax |
969 | xor eax, eax |
964 | inc eax |
970 | inc eax |
965 | ret |
971 | ret |
966 | .err: |
972 | .err: |
967 | xor eax, eax |
973 | xor eax, eax |
968 | ret |
974 | ret |
969 | 975 | ||
970 | user_realloc: |
976 | user_realloc: |
971 | ; in: eax = pointer, ebx = new size |
977 | ; in: eax = pointer, ebx = new size |
972 | ; out: eax = new pointer or NULL |
978 | ; out: eax = new pointer or NULL |
973 | test eax, eax |
979 | test eax, eax |
974 | jnz @f |
980 | jnz @f |
975 | ; realloc(NULL,sz) - same as malloc(sz) |
981 | ; realloc(NULL,sz) - same as malloc(sz) |
976 | push ebx |
982 | push ebx |
977 | call user_alloc |
983 | call user_alloc |
978 | ret |
984 | ret |
979 | @@: |
985 | @@: |
980 | push ecx edx |
986 | push ecx edx |
981 | lea ecx, [eax - 0x1000] |
987 | lea ecx, [eax - 0x1000] |
982 | shr ecx, 12 |
988 | shr ecx, 12 |
983 | mov edx, [page_tabs+ecx*4] |
989 | mov edx, [page_tabs+ecx*4] |
984 | test dl, USED_BLOCK |
990 | test dl, USED_BLOCK |
985 | jnz @f |
991 | jnz @f |
986 | ; attempt to realloc invalid pointer |
992 | ; attempt to realloc invalid pointer |
987 | .ret0: |
993 | .ret0: |
988 | pop edx ecx |
994 | pop edx ecx |
989 | xor eax, eax |
995 | xor eax, eax |
990 | ret |
996 | ret |
991 | @@: |
997 | @@: |
992 | test dl, DONT_FREE_BLOCK |
998 | test dl, DONT_FREE_BLOCK |
993 | jnz .ret0 |
999 | jnz .ret0 |
994 | add ebx, 0x1FFF |
1000 | add ebx, 0x1FFF |
995 | shr edx, 12 |
1001 | shr edx, 12 |
996 | shr ebx, 12 |
1002 | shr ebx, 12 |
997 | ; edx = allocated size, ebx = new size |
1003 | ; edx = allocated size, ebx = new size |
998 | add edx, ecx |
1004 | add edx, ecx |
999 | add ebx, ecx |
1005 | add ebx, ecx |
1000 | cmp edx, ebx |
1006 | cmp edx, ebx |
1001 | jb .realloc_add |
1007 | jb .realloc_add |
1002 | ; release part of allocated memory |
1008 | ; release part of allocated memory |
1003 | .loop: |
1009 | .loop: |
1004 | cmp edx, ebx |
1010 | cmp edx, ebx |
1005 | jz .release_done |
1011 | jz .release_done |
1006 | dec edx |
1012 | dec edx |
1007 | xor eax, eax |
1013 | xor eax, eax |
1008 | xchg eax, [page_tabs+edx*4] |
1014 | xchg eax, [page_tabs+edx*4] |
1009 | test al, 1 |
1015 | test al, 1 |
1010 | jz .loop |
1016 | jz .loop |
1011 | call free_page |
1017 | call free_page |
1012 | mov eax, edx |
1018 | mov eax, edx |
1013 | shl eax, 12 |
1019 | shl eax, 12 |
1014 | invlpg [eax] |
1020 | invlpg [eax] |
1015 | jmp .loop |
1021 | jmp .loop |
1016 | .release_done: |
1022 | .release_done: |
1017 | sub ebx, ecx |
1023 | sub ebx, ecx |
1018 | cmp ebx, 1 |
1024 | cmp ebx, 1 |
1019 | jnz .nofreeall |
1025 | jnz .nofreeall |
1020 | mov eax, [page_tabs+ecx*4] |
1026 | mov eax, [page_tabs+ecx*4] |
1021 | and eax, not 0xFFF |
1027 | and eax, not 0xFFF |
1022 | mov edx, [current_slot] |
1028 | mov edx, [current_slot] |
1023 | mov ebx, [APPDATA.mem_size+edx] |
1029 | mov ebx, [APPDATA.mem_size+edx] |
1024 | sub ebx, eax |
1030 | sub ebx, eax |
1025 | add ebx, 0x1000 |
1031 | add ebx, 0x1000 |
1026 | or al, FREE_BLOCK |
1032 | or al, FREE_BLOCK |
1027 | mov [page_tabs+ecx*4], eax |
1033 | mov [page_tabs+ecx*4], eax |
1028 | push esi edi |
1034 | push esi edi |
1029 | mov esi, [APPDATA.heap_base+edx] |
1035 | mov esi, [APPDATA.heap_base+edx] |
1030 | mov edi, [APPDATA.heap_top+edx] |
1036 | mov edi, [APPDATA.heap_top+edx] |
1031 | call update_mem_size |
1037 | call update_mem_size |
1032 | call user_normalize |
1038 | call user_normalize |
1033 | pop edi esi |
1039 | pop edi esi |
1034 | jmp .ret0 ; all freed |
1040 | jmp .ret0 ; all freed |
1035 | .nofreeall: |
1041 | .nofreeall: |
1036 | sub edx, ecx |
1042 | sub edx, ecx |
1037 | shl ebx, 12 |
1043 | shl ebx, 12 |
1038 | or ebx, USED_BLOCK |
1044 | or ebx, USED_BLOCK |
1039 | xchg [page_tabs+ecx*4], ebx |
1045 | xchg [page_tabs+ecx*4], ebx |
1040 | shr ebx, 12 |
1046 | shr ebx, 12 |
1041 | sub ebx, edx |
1047 | sub ebx, edx |
1042 | push ebx ecx edx |
1048 | push ebx ecx edx |
1043 | mov edx, [current_slot] |
1049 | mov edx, [current_slot] |
1044 | shl ebx, 12 |
1050 | shl ebx, 12 |
1045 | sub ebx, [APPDATA.mem_size+edx] |
1051 | sub ebx, [APPDATA.mem_size+edx] |
1046 | neg ebx |
1052 | neg ebx |
1047 | call update_mem_size |
1053 | call update_mem_size |
1048 | pop edx ecx ebx |
1054 | pop edx ecx ebx |
1049 | lea eax, [ecx+1] |
1055 | lea eax, [ecx+1] |
1050 | shl eax, 12 |
1056 | shl eax, 12 |
1051 | push eax |
1057 | push eax |
1052 | add ecx, edx |
1058 | add ecx, edx |
1053 | lea edx, [ecx+ebx] |
1059 | lea edx, [ecx+ebx] |
1054 | shl ebx, 12 |
1060 | shl ebx, 12 |
1055 | jz .ret |
1061 | jz .ret |
1056 | push esi |
1062 | push esi |
1057 | mov esi, [current_slot] |
1063 | mov esi, [current_slot] |
1058 | mov esi, [APPDATA.heap_top+esi] |
1064 | mov esi, [APPDATA.heap_top+esi] |
1059 | shr esi, 12 |
1065 | shr esi, 12 |
1060 | @@: |
1066 | @@: |
1061 | cmp edx, esi |
1067 | cmp edx, esi |
1062 | jae .merge_done |
1068 | jae .merge_done |
1063 | mov eax, [page_tabs+edx*4] |
1069 | mov eax, [page_tabs+edx*4] |
1064 | test al, USED_BLOCK |
1070 | test al, USED_BLOCK |
1065 | jnz .merge_done |
1071 | jnz .merge_done |
1066 | and dword [page_tabs+edx*4], 0 |
1072 | and dword [page_tabs+edx*4], 0 |
1067 | shr eax, 12 |
1073 | shr eax, 12 |
1068 | add edx, eax |
1074 | add edx, eax |
1069 | shl eax, 12 |
1075 | shl eax, 12 |
1070 | add ebx, eax |
1076 | add ebx, eax |
1071 | jmp @b |
1077 | jmp @b |
1072 | .merge_done: |
1078 | .merge_done: |
1073 | pop esi |
1079 | pop esi |
1074 | or ebx, FREE_BLOCK |
1080 | or ebx, FREE_BLOCK |
1075 | mov [page_tabs+ecx*4], ebx |
1081 | mov [page_tabs+ecx*4], ebx |
1076 | .ret: |
1082 | .ret: |
1077 | pop eax edx ecx |
1083 | pop eax edx ecx |
1078 | ret |
1084 | ret |
1079 | .realloc_add: |
1085 | .realloc_add: |
1080 | ; get some additional memory |
1086 | ; get some additional memory |
1081 | mov eax, [current_slot] |
1087 | mov eax, [current_slot] |
1082 | mov eax, [APPDATA.heap_top+eax] |
1088 | mov eax, [APPDATA.heap_top+eax] |
1083 | shr eax, 12 |
1089 | shr eax, 12 |
1084 | cmp edx, eax |
1090 | cmp edx, eax |
1085 | jae .cant_inplace |
1091 | jae .cant_inplace |
1086 | mov eax, [page_tabs+edx*4] |
1092 | mov eax, [page_tabs+edx*4] |
1087 | test al, FREE_BLOCK |
1093 | test al, FREE_BLOCK |
1088 | jz .cant_inplace |
1094 | jz .cant_inplace |
1089 | shr eax, 12 |
1095 | shr eax, 12 |
1090 | add eax, edx |
1096 | add eax, edx |
1091 | sub eax, ebx |
1097 | sub eax, ebx |
1092 | jb .cant_inplace |
1098 | jb .cant_inplace |
1093 | jz @f |
1099 | jz @f |
1094 | shl eax, 12 |
1100 | shl eax, 12 |
1095 | or al, FREE_BLOCK |
1101 | or al, FREE_BLOCK |
1096 | mov [page_tabs+ebx*4], eax |
1102 | mov [page_tabs+ebx*4], eax |
1097 | @@: |
1103 | @@: |
1098 | mov eax, ebx |
1104 | mov eax, ebx |
1099 | sub eax, ecx |
1105 | sub eax, ecx |
1100 | shl eax, 12 |
1106 | shl eax, 12 |
1101 | or al, USED_BLOCK |
1107 | or al, USED_BLOCK |
1102 | mov [page_tabs+ecx*4], eax |
1108 | mov [page_tabs+ecx*4], eax |
1103 | lea eax, [ecx+1] |
1109 | lea eax, [ecx+1] |
1104 | shl eax, 12 |
1110 | shl eax, 12 |
1105 | push eax |
1111 | push eax |
1106 | push edi |
1112 | push edi |
1107 | lea edi, [page_tabs+edx*4] |
1113 | lea edi, [page_tabs+edx*4] |
1108 | mov eax, 2 |
1114 | mov eax, 2 |
1109 | sub ebx, edx |
1115 | sub ebx, edx |
1110 | mov ecx, ebx |
1116 | mov ecx, ebx |
1111 | cld |
1117 | cld |
1112 | rep stosd |
1118 | rep stosd |
1113 | pop edi |
1119 | pop edi |
1114 | mov edx, [current_slot] |
1120 | mov edx, [current_slot] |
1115 | shl ebx, 12 |
1121 | shl ebx, 12 |
1116 | add ebx, [APPDATA.mem_size+edx] |
1122 | add ebx, [APPDATA.mem_size+edx] |
1117 | call update_mem_size |
1123 | call update_mem_size |
1118 | pop eax edx ecx |
1124 | pop eax edx ecx |
1119 | ret |
1125 | ret |
1120 | .cant_inplace: |
1126 | .cant_inplace: |
1121 | push esi edi |
1127 | push esi edi |
1122 | mov eax, [current_slot] |
1128 | mov eax, [current_slot] |
1123 | mov esi, [APPDATA.heap_base+eax] |
1129 | mov esi, [APPDATA.heap_base+eax] |
1124 | mov edi, [APPDATA.heap_top+eax] |
1130 | mov edi, [APPDATA.heap_top+eax] |
1125 | shr esi, 12 |
1131 | shr esi, 12 |
1126 | shr edi, 12 |
1132 | shr edi, 12 |
1127 | sub ebx, ecx |
1133 | sub ebx, ecx |
1128 | .find_place: |
1134 | .find_place: |
1129 | cmp esi, edi |
1135 | cmp esi, edi |
1130 | jae .place_not_found |
1136 | jae .place_not_found |
1131 | mov eax, [page_tabs+esi*4] |
1137 | mov eax, [page_tabs+esi*4] |
1132 | test al, FREE_BLOCK |
1138 | test al, FREE_BLOCK |
1133 | jz .next_place |
1139 | jz .next_place |
1134 | shr eax, 12 |
1140 | shr eax, 12 |
1135 | cmp eax, ebx |
1141 | cmp eax, ebx |
1136 | jae .place_found |
1142 | jae .place_found |
1137 | add esi, eax |
1143 | add esi, eax |
1138 | jmp .find_place |
1144 | jmp .find_place |
1139 | .next_place: |
1145 | .next_place: |
1140 | shr eax, 12 |
1146 | shr eax, 12 |
1141 | add esi, eax |
1147 | add esi, eax |
1142 | jmp .find_place |
1148 | jmp .find_place |
1143 | .place_not_found: |
1149 | .place_not_found: |
1144 | pop edi esi |
1150 | pop edi esi |
1145 | jmp .ret0 |
1151 | jmp .ret0 |
1146 | .place_found: |
1152 | .place_found: |
1147 | sub eax, ebx |
1153 | sub eax, ebx |
1148 | jz @f |
1154 | jz @f |
1149 | push esi |
1155 | push esi |
1150 | add esi, ebx |
1156 | add esi, ebx |
1151 | shl eax, 12 |
1157 | shl eax, 12 |
1152 | or al, FREE_BLOCK |
1158 | or al, FREE_BLOCK |
1153 | mov [page_tabs+esi*4], eax |
1159 | mov [page_tabs+esi*4], eax |
1154 | pop esi |
1160 | pop esi |
1155 | @@: |
1161 | @@: |
1156 | mov eax, ebx |
1162 | mov eax, ebx |
1157 | shl eax, 12 |
1163 | shl eax, 12 |
1158 | or al, USED_BLOCK |
1164 | or al, USED_BLOCK |
1159 | mov [page_tabs+esi*4], eax |
1165 | mov [page_tabs+esi*4], eax |
1160 | inc esi |
1166 | inc esi |
1161 | mov eax, esi |
1167 | mov eax, esi |
1162 | shl eax, 12 |
1168 | shl eax, 12 |
1163 | push eax |
1169 | push eax |
1164 | mov eax, [page_tabs+ecx*4] |
1170 | mov eax, [page_tabs+ecx*4] |
1165 | and eax, not 0xFFF |
1171 | and eax, not 0xFFF |
1166 | or al, FREE_BLOCK |
1172 | or al, FREE_BLOCK |
1167 | sub edx, ecx |
1173 | sub edx, ecx |
1168 | mov [page_tabs+ecx*4], eax |
1174 | mov [page_tabs+ecx*4], eax |
1169 | inc ecx |
1175 | inc ecx |
1170 | dec ebx |
1176 | dec ebx |
1171 | dec edx |
1177 | dec edx |
1172 | jz .no |
1178 | jz .no |
1173 | @@: |
1179 | @@: |
1174 | xor eax, eax |
1180 | xor eax, eax |
1175 | xchg eax, [page_tabs+ecx*4] |
1181 | xchg eax, [page_tabs+ecx*4] |
1176 | mov [page_tabs+esi*4], eax |
1182 | mov [page_tabs+esi*4], eax |
1177 | mov eax, ecx |
1183 | mov eax, ecx |
1178 | shl eax, 12 |
1184 | shl eax, 12 |
1179 | invlpg [eax] |
1185 | invlpg [eax] |
1180 | inc esi |
1186 | inc esi |
1181 | inc ecx |
1187 | inc ecx |
1182 | dec ebx |
1188 | dec ebx |
1183 | dec edx |
1189 | dec edx |
1184 | jnz @b |
1190 | jnz @b |
1185 | .no: |
1191 | .no: |
1186 | push ebx |
1192 | push ebx |
1187 | mov edx, [current_slot] |
1193 | mov edx, [current_slot] |
1188 | shl ebx, 12 |
1194 | shl ebx, 12 |
1189 | add ebx, [APPDATA.mem_size+edx] |
1195 | add ebx, [APPDATA.mem_size+edx] |
1190 | call update_mem_size |
1196 | call update_mem_size |
1191 | pop ebx |
1197 | pop ebx |
1192 | @@: |
1198 | @@: |
1193 | mov dword [page_tabs+esi*4], 2 |
1199 | mov dword [page_tabs+esi*4], 2 |
1194 | inc esi |
1200 | inc esi |
1195 | dec ebx |
1201 | dec ebx |
1196 | jnz @b |
1202 | jnz @b |
1197 | pop eax edi esi edx ecx |
1203 | pop eax edi esi edx ecx |
1198 | ret |
1204 | ret |
1199 | 1205 | ||
1200 | if 0 |
1206 | if 0 |
1201 | align 4 |
1207 | align 4 |
1202 | proc alloc_dll |
1208 | proc alloc_dll |
1203 | pushf |
1209 | pushf |
1204 | cli |
1210 | cli |
1205 | bsf eax, [dll_map] |
1211 | bsf eax, [dll_map] |
1206 | jnz .find |
1212 | jnz .find |
1207 | popf |
1213 | popf |
1208 | xor eax, eax |
1214 | xor eax, eax |
1209 | ret |
1215 | ret |
1210 | .find: |
1216 | .find: |
1211 | btr [dll_map], eax |
1217 | btr [dll_map], eax |
1212 | popf |
1218 | popf |
1213 | shl eax, 5 |
1219 | shl eax, 5 |
1214 | add eax, dll_tab |
1220 | add eax, dll_tab |
1215 | ret |
1221 | ret |
1216 | endp |
1222 | endp |
1217 | 1223 | ||
1218 | align 4 |
1224 | align 4 |
1219 | proc alloc_service |
1225 | proc alloc_service |
1220 | pushf |
1226 | pushf |
1221 | cli |
1227 | cli |
1222 | bsf eax, [srv_map] |
1228 | bsf eax, [srv_map] |
1223 | jnz .find |
1229 | jnz .find |
1224 | popf |
1230 | popf |
1225 | xor eax, eax |
1231 | xor eax, eax |
1226 | ret |
1232 | ret |
1227 | .find: |
1233 | .find: |
1228 | btr [srv_map], eax |
1234 | btr [srv_map], eax |
1229 | popf |
1235 | popf |
1230 | shl eax,0x02 |
1236 | shl eax,0x02 |
1231 | lea eax,[srv_tab+eax+eax*8] ;srv_tab+eax*36 |
1237 | lea eax,[srv_tab+eax+eax*8] ;srv_tab+eax*36 |
1232 | ret |
1238 | ret |
1233 | endp |
1239 | endp |
1234 | 1240 | ||
1235 | end if |
1241 | end if |
1236 | 1242 | ||
1237 | 1243 | ||
1238 | ;;;;;;;;;;;;;; SHARED ;;;;;;;;;;;;;;;;; |
1244 | ;;;;;;;;;;;;;; SHARED ;;;;;;;;;;;;;;;;; |
1239 | 1245 | ||
1240 | 1246 | ||
1241 | ; param |
1247 | ; param |
1242 | ; eax= shm_map object |
1248 | ; eax= shm_map object |
1243 | 1249 | ||
1244 | align 4 |
1250 | align 4 |
1245 | destroy_smap: |
1251 | destroy_smap: |
1246 | 1252 | ||
1247 | pushfd |
1253 | pushfd |
1248 | cli |
1254 | cli |
1249 | 1255 | ||
1250 | push esi |
1256 | push esi |
1251 | push edi |
1257 | push edi |
1252 | 1258 | ||
1253 | mov edi, eax |
1259 | mov edi, eax |
1254 | mov esi, [eax+SMAP.parent] |
1260 | mov esi, [eax+SMAP.parent] |
1255 | test esi, esi |
1261 | test esi, esi |
1256 | jz .done |
1262 | jz .done |
1257 | 1263 | ||
1258 | lock dec [esi+SMEM.refcount] |
1264 | lock dec [esi+SMEM.refcount] |
1259 | jnz .done |
1265 | jnz .done |
1260 | 1266 | ||
1261 | mov ecx, [esi+SMEM.bk] |
1267 | mov ecx, [esi+SMEM.bk] |
1262 | mov edx, [esi+SMEM.fd] |
1268 | mov edx, [esi+SMEM.fd] |
1263 | 1269 | ||
1264 | mov [ecx+SMEM.fd], edx |
1270 | mov [ecx+SMEM.fd], edx |
1265 | mov [edx+SMEM.bk], ecx |
1271 | mov [edx+SMEM.bk], ecx |
1266 | 1272 | ||
1267 | stdcall kernel_free, [esi+SMEM.base] |
1273 | stdcall kernel_free, [esi+SMEM.base] |
1268 | mov eax, esi |
1274 | mov eax, esi |
1269 | call free |
1275 | call free |
1270 | .done: |
1276 | .done: |
1271 | mov eax, edi |
1277 | mov eax, edi |
1272 | call destroy_kernel_object |
1278 | call destroy_kernel_object |
1273 | 1279 | ||
1274 | pop edi |
1280 | pop edi |
1275 | pop esi |
1281 | pop esi |
1276 | popfd |
1282 | popfd |
1277 | 1283 | ||
1278 | ret |
1284 | ret |
1279 | 1285 | ||
1280 | E_NOTFOUND equ 5 |
1286 | E_NOTFOUND equ 5 |
1281 | E_ACCESS equ 10 |
1287 | E_ACCESS equ 10 |
1282 | E_NOMEM equ 30 |
1288 | E_NOMEM equ 30 |
1283 | E_PARAM equ 33 |
1289 | E_PARAM equ 33 |
1284 | 1290 | ||
1285 | SHM_READ equ 0 |
1291 | SHM_READ equ 0 |
1286 | SHM_WRITE equ 1 |
1292 | SHM_WRITE equ 1 |
1287 | 1293 | ||
1288 | SHM_ACCESS_MASK equ 3 |
1294 | SHM_ACCESS_MASK equ 3 |
1289 | 1295 | ||
1290 | SHM_OPEN equ (0 shl 2) |
1296 | SHM_OPEN equ (0 shl 2) |
1291 | SHM_OPEN_ALWAYS equ (1 shl 2) |
1297 | SHM_OPEN_ALWAYS equ (1 shl 2) |
1292 | SHM_CREATE equ (2 shl 2) |
1298 | SHM_CREATE equ (2 shl 2) |
1293 | 1299 | ||
1294 | SHM_OPEN_MASK equ (3 shl 2) |
1300 | SHM_OPEN_MASK equ (3 shl 2) |
1295 | 1301 | ||
1296 | align 4 |
1302 | align 4 |
1297 | proc shmem_open stdcall name:dword, size:dword, access:dword |
1303 | proc shmem_open stdcall name:dword, size:dword, access:dword |
1298 | locals |
1304 | locals |
1299 | action dd ? |
1305 | action dd ? |
1300 | owner_access dd ? |
1306 | owner_access dd ? |
1301 | mapped dd ? |
1307 | mapped dd ? |
1302 | endl |
1308 | endl |
1303 | 1309 | ||
1304 | push ebx |
1310 | push ebx |
1305 | push esi |
1311 | push esi |
1306 | push edi |
1312 | push edi |
1307 | 1313 | ||
1308 | mov [mapped], 0 |
1314 | mov [mapped], 0 |
1309 | mov [owner_access], 0 |
1315 | mov [owner_access], 0 |
1310 | 1316 | ||
1311 | pushfd ;mutex required |
1317 | pushfd ;mutex required |
1312 | cli |
1318 | cli |
1313 | 1319 | ||
1314 | mov eax, [access] |
1320 | mov eax, [access] |
1315 | and eax, SHM_OPEN_MASK |
1321 | and eax, SHM_OPEN_MASK |
1316 | mov [action], eax |
1322 | mov [action], eax |
1317 | 1323 | ||
1318 | mov ebx, [name] |
1324 | mov ebx, [name] |
1319 | test ebx, ebx |
1325 | test ebx, ebx |
1320 | mov edx, E_PARAM |
1326 | mov edx, E_PARAM |
1321 | jz .fail |
1327 | jz .fail |
1322 | 1328 | ||
1323 | mov esi, [shmem_list.fd] |
1329 | mov esi, [shmem_list.fd] |
1324 | align 4 |
1330 | align 4 |
1325 | @@: |
1331 | @@: |
1326 | cmp esi, shmem_list |
1332 | cmp esi, shmem_list |
1327 | je .not_found |
1333 | je .not_found |
1328 | 1334 | ||
1329 | lea edx, [esi+SMEM.name] ; link , base, size |
1335 | lea edx, [esi+SMEM.name] ; link , base, size |
1330 | stdcall strncmp, edx, ebx, 32 |
1336 | stdcall strncmp, edx, ebx, 32 |
1331 | test eax, eax |
1337 | test eax, eax |
1332 | je .found |
1338 | je .found |
1333 | 1339 | ||
1334 | mov esi, [esi+SMEM.fd] |
1340 | mov esi, [esi+SMEM.fd] |
1335 | jmp @B |
1341 | jmp @B |
1336 | 1342 | ||
1337 | .not_found: |
1343 | .not_found: |
1338 | mov eax, [action] |
1344 | mov eax, [action] |
1339 | 1345 | ||
1340 | cmp eax, SHM_OPEN |
1346 | cmp eax, SHM_OPEN |
1341 | mov edx, E_NOTFOUND |
1347 | mov edx, E_NOTFOUND |
1342 | je .fail |
1348 | je .fail |
1343 | 1349 | ||
1344 | cmp eax, SHM_CREATE |
1350 | cmp eax, SHM_CREATE |
1345 | mov edx, E_PARAM |
1351 | mov edx, E_PARAM |
1346 | je .create_shm |
1352 | je .create_shm |
1347 | 1353 | ||
1348 | cmp eax, SHM_OPEN_ALWAYS |
1354 | cmp eax, SHM_OPEN_ALWAYS |
1349 | jne .fail |
1355 | jne .fail |
1350 | 1356 | ||
1351 | .create_shm: |
1357 | .create_shm: |
1352 | 1358 | ||
1353 | mov ecx, [size] |
1359 | mov ecx, [size] |
1354 | test ecx, ecx |
1360 | test ecx, ecx |
1355 | jz .fail |
1361 | jz .fail |
1356 | 1362 | ||
1357 | add ecx, 4095 |
1363 | add ecx, 4095 |
1358 | and ecx, -4096 |
1364 | and ecx, -4096 |
1359 | mov [size], ecx |
1365 | mov [size], ecx |
1360 | 1366 | ||
1361 | mov eax, SMEM.sizeof |
1367 | mov eax, SMEM.sizeof |
1362 | call malloc |
1368 | call malloc |
1363 | test eax, eax |
1369 | test eax, eax |
1364 | mov esi, eax |
1370 | mov esi, eax |
1365 | mov edx, E_NOMEM |
1371 | mov edx, E_NOMEM |
1366 | jz .fail |
1372 | jz .fail |
1367 | 1373 | ||
1368 | stdcall kernel_alloc, [size] |
1374 | stdcall kernel_alloc, [size] |
1369 | test eax, eax |
1375 | test eax, eax |
1370 | mov [mapped], eax |
1376 | mov [mapped], eax |
1371 | mov edx, E_NOMEM |
1377 | mov edx, E_NOMEM |
1372 | jz .cleanup |
1378 | jz .cleanup |
1373 | 1379 | ||
1374 | mov ecx, [size] |
1380 | mov ecx, [size] |
1375 | mov edx, [access] |
1381 | mov edx, [access] |
1376 | and edx, SHM_ACCESS_MASK |
1382 | and edx, SHM_ACCESS_MASK |
1377 | 1383 | ||
1378 | mov [esi+SMEM.base], eax |
1384 | mov [esi+SMEM.base], eax |
1379 | mov [esi+SMEM.size], ecx |
1385 | mov [esi+SMEM.size], ecx |
1380 | mov [esi+SMEM.access], edx |
1386 | mov [esi+SMEM.access], edx |
1381 | mov [esi+SMEM.refcount], 0 |
1387 | mov [esi+SMEM.refcount], 0 |
1382 | mov [esi+SMEM.name+28], 0 |
1388 | mov [esi+SMEM.name+28], 0 |
1383 | 1389 | ||
1384 | lea eax, [esi+SMEM.name] |
1390 | lea eax, [esi+SMEM.name] |
1385 | stdcall strncpy, eax, [name], 31 |
1391 | stdcall strncpy, eax, [name], 31 |
1386 | 1392 | ||
1387 | mov eax, [shmem_list.fd] |
1393 | mov eax, [shmem_list.fd] |
1388 | mov [esi+SMEM.bk], shmem_list |
1394 | mov [esi+SMEM.bk], shmem_list |
1389 | mov [esi+SMEM.fd], eax |
1395 | mov [esi+SMEM.fd], eax |
1390 | 1396 | ||
1391 | mov [eax+SMEM.bk], esi |
1397 | mov [eax+SMEM.bk], esi |
1392 | mov [shmem_list.fd], esi |
1398 | mov [shmem_list.fd], esi |
1393 | 1399 | ||
1394 | mov [action], SHM_OPEN |
1400 | mov [action], SHM_OPEN |
1395 | mov [owner_access], SHM_WRITE |
1401 | mov [owner_access], SHM_WRITE |
1396 | 1402 | ||
1397 | .found: |
1403 | .found: |
1398 | mov eax, [action] |
1404 | mov eax, [action] |
1399 | 1405 | ||
1400 | cmp eax, SHM_CREATE |
1406 | cmp eax, SHM_CREATE |
1401 | mov edx, E_ACCESS |
1407 | mov edx, E_ACCESS |
1402 | je .exit |
1408 | je .exit |
1403 | 1409 | ||
1404 | cmp eax, SHM_OPEN |
1410 | cmp eax, SHM_OPEN |
1405 | mov edx, E_PARAM |
1411 | mov edx, E_PARAM |
1406 | je .create_map |
1412 | je .create_map |
1407 | 1413 | ||
1408 | cmp eax, SHM_OPEN_ALWAYS |
1414 | cmp eax, SHM_OPEN_ALWAYS |
1409 | jne .fail |
1415 | jne .fail |
1410 | 1416 | ||
1411 | .create_map: |
1417 | .create_map: |
1412 | 1418 | ||
1413 | mov eax, [access] |
1419 | mov eax, [access] |
1414 | and eax, SHM_ACCESS_MASK |
1420 | and eax, SHM_ACCESS_MASK |
1415 | cmp eax, [esi+SMEM.access] |
1421 | cmp eax, [esi+SMEM.access] |
1416 | mov [access], eax |
1422 | mov [access], eax |
1417 | mov edx, E_ACCESS |
1423 | mov edx, E_ACCESS |
1418 | ja .fail |
1424 | ja .fail |
1419 | 1425 | ||
1420 | mov ebx, [CURRENT_TASK] |
1426 | mov ebx, [CURRENT_TASK] |
1421 | shl ebx, 5 |
1427 | shl ebx, 5 |
1422 | mov ebx, [CURRENT_TASK+ebx+4] |
1428 | mov ebx, [CURRENT_TASK+ebx+4] |
1423 | mov eax, SMAP.sizeof |
1429 | mov eax, SMAP.sizeof |
1424 | 1430 | ||
1425 | call create_kernel_object |
1431 | call create_kernel_object |
1426 | test eax, eax |
1432 | test eax, eax |
1427 | mov edi, eax |
1433 | mov edi, eax |
1428 | mov edx, E_NOMEM |
1434 | mov edx, E_NOMEM |
1429 | jz .fail |
1435 | jz .fail |
1430 | 1436 | ||
1431 | inc [esi+SMEM.refcount] |
1437 | inc [esi+SMEM.refcount] |
1432 | 1438 | ||
1433 | mov [edi+SMAP.magic], 'SMAP' |
1439 | mov [edi+SMAP.magic], 'SMAP' |
1434 | mov [edi+SMAP.destroy], destroy_smap |
1440 | mov [edi+SMAP.destroy], destroy_smap |
1435 | mov [edi+SMAP.parent], esi |
1441 | mov [edi+SMAP.parent], esi |
1436 | mov [edi+SMAP.base], 0 |
1442 | mov [edi+SMAP.base], 0 |
1437 | 1443 | ||
1438 | stdcall user_alloc, [esi+SMEM.size] |
1444 | stdcall user_alloc, [esi+SMEM.size] |
1439 | test eax, eax |
1445 | test eax, eax |
1440 | mov [mapped], eax |
1446 | mov [mapped], eax |
1441 | mov edx, E_NOMEM |
1447 | mov edx, E_NOMEM |
1442 | jz .cleanup2 |
1448 | jz .cleanup2 |
1443 | 1449 | ||
1444 | mov [edi+SMAP.base], eax |
1450 | mov [edi+SMAP.base], eax |
1445 | 1451 | ||
1446 | mov ecx, [esi+SMEM.size] |
1452 | mov ecx, [esi+SMEM.size] |
1447 | mov [size], ecx |
1453 | mov [size], ecx |
1448 | 1454 | ||
1449 | shr ecx, 12 |
1455 | shr ecx, 12 |
1450 | shr eax, 10 |
1456 | shr eax, 10 |
1451 | 1457 | ||
1452 | mov esi, [esi+SMEM.base] |
1458 | mov esi, [esi+SMEM.base] |
1453 | shr esi, 10 |
1459 | shr esi, 10 |
1454 | lea edi, [page_tabs+eax] |
1460 | lea edi, [page_tabs+eax] |
1455 | add esi, page_tabs |
1461 | add esi, page_tabs |
1456 | 1462 | ||
1457 | mov edx, [access] |
1463 | mov edx, [access] |
1458 | or edx, [owner_access] |
1464 | or edx, [owner_access] |
1459 | shl edx, 1 |
1465 | shl edx, 1 |
1460 | or edx, PG_USER+PG_SHARED |
1466 | or edx, PG_USER+PG_SHARED |
1461 | @@: |
1467 | @@: |
1462 | lodsd |
1468 | lodsd |
1463 | and eax, 0xFFFFF000 |
1469 | and eax, 0xFFFFF000 |
1464 | or eax, edx |
1470 | or eax, edx |
1465 | stosd |
1471 | stosd |
1466 | loop @B |
1472 | loop @B |
1467 | 1473 | ||
1468 | xor edx, edx |
1474 | xor edx, edx |
1469 | 1475 | ||
1470 | cmp [owner_access], 0 |
1476 | cmp [owner_access], 0 |
1471 | jne .fail |
1477 | jne .fail |
1472 | .exit: |
1478 | .exit: |
1473 | mov edx, [size] |
1479 | mov edx, [size] |
1474 | .fail: |
1480 | .fail: |
1475 | mov eax, [mapped] |
1481 | mov eax, [mapped] |
1476 | 1482 | ||
1477 | popfd |
1483 | popfd |
1478 | pop edi |
1484 | pop edi |
1479 | pop esi |
1485 | pop esi |
1480 | pop ebx |
1486 | pop ebx |
1481 | ret |
1487 | ret |
1482 | .cleanup: |
1488 | .cleanup: |
1483 | mov [size], edx |
1489 | mov [size], edx |
1484 | mov eax, esi |
1490 | mov eax, esi |
1485 | call free |
1491 | call free |
1486 | jmp .exit |
1492 | jmp .exit |
1487 | 1493 | ||
1488 | .cleanup2: |
1494 | .cleanup2: |
1489 | mov [size], edx |
1495 | mov [size], edx |
1490 | mov eax, edi |
1496 | mov eax, edi |
1491 | call destroy_smap |
1497 | call destroy_smap |
1492 | jmp .exit |
1498 | jmp .exit |
1493 | endp |
1499 | endp |
1494 | 1500 | ||
1495 | align 4 |
1501 | align 4 |
1496 | proc shmem_close stdcall, name:dword |
1502 | proc shmem_close stdcall, name:dword |
1497 | 1503 | ||
1498 | mov eax, [name] |
1504 | mov eax, [name] |
1499 | test eax, eax |
1505 | test eax, eax |
1500 | jz .fail |
1506 | jz .fail |
1501 | 1507 | ||
1502 | push esi |
1508 | push esi |
1503 | push edi |
1509 | push edi |
1504 | pushfd |
1510 | pushfd |
1505 | cli |
1511 | cli |
1506 | 1512 | ||
1507 | mov esi, [current_slot] |
1513 | mov esi, [current_slot] |
1508 | add esi, APP_OBJ_OFFSET |
1514 | add esi, APP_OBJ_OFFSET |
1509 | .next: |
1515 | .next: |
1510 | mov eax, [esi+APPOBJ.fd] |
1516 | mov eax, [esi+APPOBJ.fd] |
1511 | test eax, eax |
1517 | test eax, eax |
1512 | jz @F |
1518 | jz @F |
1513 | 1519 | ||
1514 | cmp eax, esi |
1520 | cmp eax, esi |
1515 | mov esi, eax |
1521 | mov esi, eax |
1516 | je @F |
1522 | je @F |
1517 | 1523 | ||
1518 | cmp [eax+SMAP.magic], 'SMAP' |
1524 | cmp [eax+SMAP.magic], 'SMAP' |
1519 | jne .next |
1525 | jne .next |
1520 | 1526 | ||
1521 | mov edi, [eax+SMAP.parent] |
1527 | mov edi, [eax+SMAP.parent] |
1522 | test edi, edi |
1528 | test edi, edi |
1523 | jz .next |
1529 | jz .next |
1524 | 1530 | ||
1525 | lea edi, [edi+SMEM.name] |
1531 | lea edi, [edi+SMEM.name] |
1526 | stdcall strncmp, [name], edi, 32 |
1532 | stdcall strncmp, [name], edi, 32 |
1527 | test eax, eax |
1533 | test eax, eax |
1528 | jne .next |
1534 | jne .next |
1529 | 1535 | ||
1530 | stdcall user_free, [esi+SMAP.base] |
1536 | stdcall user_free, [esi+SMAP.base] |
1531 | 1537 | ||
1532 | mov eax,esi |
1538 | mov eax,esi |
1533 | call [esi+APPOBJ.destroy] |
1539 | call [esi+APPOBJ.destroy] |
1534 | @@: |
1540 | @@: |
1535 | popfd |
1541 | popfd |
1536 | pop edi |
1542 | pop edi |
1537 | pop esi |
1543 | pop esi |
1538 | .fail: |
1544 | .fail: |
1539 | ret |
1545 | ret |
1540 | endp=> |
1546 | endp=> |