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1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
2 | ;; ;; |
3 | ;; Copyright (C) KolibriOS team 2004-2011. 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: 3681 $ |
8 | $Revision: 5363 $ |
9 | 9 | ||
10 | 10 | ||
11 | ; Small heap based on malloc/free/realloc written by Doug Lea |
11 | ; Small heap based on malloc/free/realloc written by Doug Lea |
12 | ; Version 2.8.3 Thu Sep 22 11:16:15 2005 Doug Lea (dl at gee) |
12 | ; Version 2.8.3 Thu Sep 22 11:16:15 2005 Doug Lea (dl at gee) |
13 | ; Source ftp://gee.cs.oswego.edu/pub/misc/malloc.c |
13 | ; Source ftp://gee.cs.oswego.edu/pub/misc/malloc.c |
14 | ; License http://creativecommons.org/licenses/publicdomain. |
14 | ; License http://creativecommons.org/licenses/publicdomain. |
15 | 15 | ||
16 | 16 | ||
17 | ; eax= size |
17 | ; eax= size |
18 | 18 | ||
19 | ; temp |
19 | ; temp |
20 | ; esi= nb |
20 | ; esi= nb |
21 | ; ebx= idx |
21 | ; ebx= idx |
22 | ; |
22 | ; |
23 | align 4 |
23 | align 4 |
24 | malloc: |
24 | malloc: |
25 | push ebx esi |
25 | push ebx esi |
26 | 26 | ||
27 | ; nb = ((size+7)&~7)+8; |
27 | ; nb = ((size+7)&~7)+8; |
28 | 28 | ||
29 | mov esi, eax ;size |
29 | mov esi, eax ;size |
30 | add esi, 7 |
30 | add esi, 7 |
31 | and esi, -8 |
31 | and esi, -8 |
32 | add esi, 8 |
32 | add esi, 8 |
33 | 33 | ||
34 | mov ecx, mst.mutex |
34 | mov ecx, mst.mutex |
35 | call mutex_lock |
35 | call mutex_lock |
36 | 36 | ||
37 | cmp esi, 256 |
37 | cmp esi, 256 |
38 | jae .large |
38 | jae .large |
39 | 39 | ||
40 | mov ecx, esi |
40 | mov ecx, esi |
41 | shr ecx, 3 |
41 | shr ecx, 3 |
42 | or eax, -1 |
42 | or eax, -1 |
43 | shl eax, cl |
43 | shl eax, cl |
44 | and eax, [mst.smallmap] |
44 | and eax, [mst.smallmap] |
45 | jz .small |
45 | jz .small |
46 | 46 | ||
47 | push ebp |
47 | push ebp |
48 | push edi |
48 | push edi |
49 | 49 | ||
50 | bsf eax, eax |
50 | bsf eax, eax |
51 | mov ebx, eax |
51 | mov ebx, eax |
52 | 52 | ||
53 | ; psize= idx<<3; |
53 | ; psize= idx<<3; |
54 | ; B = &ms.smallbins[idx]; |
54 | ; B = &ms.smallbins[idx]; |
55 | ; p = B->fd; |
55 | ; p = B->fd; |
56 | ; F = p->fd; |
56 | ; F = p->fd; |
57 | ; rsize= psize-nb; |
57 | ; rsize= psize-nb; |
58 | 58 | ||
59 | lea ebp, [eax*8] ;ebp= psize |
59 | lea ebp, [eax*8] ;ebp= psize |
60 | shl eax, 4 |
60 | shl eax, 4 |
61 | lea edi, [mst.smallbins+eax] ;edi= B |
61 | lea edi, [mst.smallbins+eax] ;edi= B |
62 | mov edx, [edi+8] ;edx= p |
62 | mov edx, [edi+8] ;edx= p |
63 | mov eax, [edx+8] ;eax= F |
63 | mov eax, [edx+8] ;eax= F |
64 | mov ecx, ebp |
64 | mov ecx, ebp |
65 | sub ecx, esi ;ecx= rsize |
65 | sub ecx, esi ;ecx= rsize |
66 | 66 | ||
67 | ; if (B == F) |
67 | ; if (B == F) |
68 | cmp edi, eax |
68 | cmp edi, eax |
69 | jne @F |
69 | jne @F |
70 | 70 | ||
71 | btr [mst.smallmap], ebx |
71 | btr [mst.smallmap], ebx |
72 | @@: |
72 | @@: |
73 | 73 | ||
74 | ; B->fd = F; |
74 | ; B->fd = F; |
75 | ; F->bk = B; |
75 | ; F->bk = B; |
76 | ; if(rsize<16) |
76 | ; if(rsize<16) |
77 | 77 | ||
78 | cmp ecx, 16 |
78 | cmp ecx, 16 |
79 | mov [edi+8], eax |
79 | mov [edi+8], eax |
80 | mov [eax+12], edi |
80 | mov [eax+12], edi |
81 | jae .split |
81 | jae .split |
82 | 82 | ||
83 | ; p->head = psize|PINUSE_BIT|CINUSE_BIT; |
83 | ; p->head = psize|PINUSE_BIT|CINUSE_BIT; |
84 | ; (p + psize)->head |= PINUSE_BIT; |
84 | ; (p + psize)->head |= PINUSE_BIT; |
85 | 85 | ||
86 | lea eax, [edx+8] |
86 | lea eax, [edx+8] |
87 | or dword [edx+ebp+4], 1 |
87 | or dword [edx+ebp+4], 1 |
88 | 88 | ||
89 | or ebp, 3 |
89 | or ebp, 3 |
90 | mov [edx+4], ebp |
90 | mov [edx+4], ebp |
91 | 91 | ||
92 | pop edi |
92 | pop edi |
93 | pop ebp |
93 | pop ebp |
94 | .done: |
94 | .done: |
95 | mov esi, eax |
95 | mov esi, eax |
96 | mov ecx, mst.mutex |
96 | mov ecx, mst.mutex |
97 | call mutex_unlock |
97 | call mutex_unlock |
98 | mov eax, esi |
98 | mov eax, esi |
99 | pop esi ebx |
99 | pop esi ebx |
100 | ret |
100 | ret |
101 | 101 | ||
102 | .split: |
102 | .split: |
103 | lea ebx, [edx+8] ;ebx=mem |
103 | lea ebx, [edx+8] ;ebx=mem |
104 | 104 | ||
105 | ; r = chunk_plus_offset(p, nb); |
105 | ; r = chunk_plus_offset(p, nb); |
106 | ; p->head = nb|PINUSE_BIT|CINUSE_BIT; |
106 | ; p->head = nb|PINUSE_BIT|CINUSE_BIT; |
107 | ; r->head = rsize|PINUSE_BIT; |
107 | ; r->head = rsize|PINUSE_BIT; |
108 | 108 | ||
109 | lea eax, [edx+esi] ;eax= r |
109 | lea eax, [edx+esi] ;eax= r |
110 | or esi, 3 |
110 | or esi, 3 |
111 | mov [edx+4], esi |
111 | mov [edx+4], esi |
112 | 112 | ||
113 | mov edx, ecx |
113 | mov edx, ecx |
114 | or edx, 1 |
114 | or edx, 1 |
115 | mov [eax+4], edx |
115 | mov [eax+4], edx |
116 | 116 | ||
117 | ; (r + rsize)->prev_foot = rsize; |
117 | ; (r + rsize)->prev_foot = rsize; |
118 | 118 | ||
119 | mov [eax+ecx], ecx |
119 | mov [eax+ecx], ecx |
120 | 120 | ||
121 | ; I = rsize>>3; |
121 | ; I = rsize>>3; |
122 | 122 | ||
123 | shr ecx, 3 |
123 | shr ecx, 3 |
124 | 124 | ||
125 | ; ms.smallmap |= 1<< I; |
125 | ; ms.smallmap |= 1<< I; |
126 | bts [mst.smallmap], ecx |
126 | bts [mst.smallmap], ecx |
127 | 127 | ||
128 | ; B = &ms.smallbins[I]; |
128 | ; B = &ms.smallbins[I]; |
129 | 129 | ||
130 | shl ecx, 4 |
130 | shl ecx, 4 |
131 | pop edi |
131 | pop edi |
132 | pop ebp |
132 | pop ebp |
133 | add ecx, mst.smallbins ;ecx= B |
133 | add ecx, mst.smallbins ;ecx= B |
134 | 134 | ||
135 | mov edx, [ecx+8] ; F = B->fd; |
135 | mov edx, [ecx+8] ; F = B->fd; |
136 | mov [ecx+8], eax ; B->fd = r; |
136 | mov [ecx+8], eax ; B->fd = r; |
137 | mov [edx+12], eax ; F->bk = r; |
137 | mov [edx+12], eax ; F->bk = r; |
138 | mov [eax+8], edx ; r->fd = F; |
138 | mov [eax+8], edx ; r->fd = F; |
139 | mov [eax+12], ecx ; r->bk = B; |
139 | mov [eax+12], ecx ; r->bk = B; |
140 | 140 | ||
141 | mov eax, ebx |
141 | mov eax, ebx |
142 | jmp .done |
142 | jmp .done |
143 | 143 | ||
144 | .small: |
144 | .small: |
145 | 145 | ||
146 | ; if (ms.treemap != 0 && (mem = malloc_small(nb)) != 0) |
146 | ; if (ms.treemap != 0 && (mem = malloc_small(nb)) != 0) |
147 | ;;;;;;;;;;; start a change |
147 | ;;;;;;;;;;; start a change |
148 | mov eax, [mst.treemap] |
148 | mov eax, [mst.treemap] |
149 | test eax, eax |
149 | test eax, eax |
150 | ;;;;;;;;;;; end the change |
150 | ;;;;;;;;;;; end the change |
151 | ; cmp [mst.treemap], 0 |
151 | ; cmp [mst.treemap], 0 |
152 | jz .from_top |
152 | jz .from_top |
153 | mov eax, esi |
153 | mov eax, esi |
154 | call malloc_small |
154 | call malloc_small |
155 | test eax, eax |
155 | test eax, eax |
156 | jz .from_top |
156 | jz .from_top |
157 | jmp .done |
157 | jmp .done |
158 | 158 | ||
159 | .large: |
159 | .large: |
160 | 160 | ||
161 | ; if (ms.treemap != 0 && (mem = malloc_large(nb)) != 0) |
161 | ; if (ms.treemap != 0 && (mem = malloc_large(nb)) != 0) |
162 | 162 | ||
163 | cmp [mst.treemap], 0 |
163 | cmp [mst.treemap], 0 |
164 | je .from_top |
164 | je .from_top |
165 | 165 | ||
166 | call malloc_large ;esi= nb |
166 | call malloc_large ;esi= nb |
167 | test eax, eax |
167 | test eax, eax |
168 | jne .done |
168 | jne .done |
169 | .from_top: |
169 | .from_top: |
170 | 170 | ||
171 | ; if (nb < ms.topsize) |
171 | ; if (nb < ms.topsize) |
172 | 172 | ||
173 | mov eax, [mst.topsize] |
173 | mov eax, [mst.topsize] |
174 | cmp esi, eax |
174 | cmp esi, eax |
175 | jae .fail |
175 | jae .fail |
176 | 176 | ||
177 | ; rsize = ms.topsize -= nb; |
177 | ; rsize = ms.topsize -= nb; |
178 | ; p = ms.top; |
178 | ; p = ms.top; |
179 | 179 | ||
180 | mov ecx, [mst.top] |
180 | mov ecx, [mst.top] |
181 | sub eax, esi |
181 | sub eax, esi |
182 | mov [mst.topsize], eax |
182 | mov [mst.topsize], eax |
183 | 183 | ||
184 | ; r = ms.top = chunk_plus_offset(p, nb); |
184 | ; r = ms.top = chunk_plus_offset(p, nb); |
185 | ; r->head = rsize | PINUSE_BIT; |
185 | ; r->head = rsize | PINUSE_BIT; |
186 | ; p->head = nb |PINUSE_BIT|CINUSE_BIT; |
186 | ; p->head = nb |PINUSE_BIT|CINUSE_BIT; |
187 | 187 | ||
188 | lea edx, [ecx+esi] |
188 | lea edx, [ecx+esi] |
189 | or eax, 1 |
189 | or eax, 1 |
190 | mov [mst.top], edx |
190 | mov [mst.top], edx |
191 | or esi, 3 |
191 | or esi, 3 |
192 | mov [edx+4], eax |
192 | mov [edx+4], eax |
193 | mov [ecx+4], esi |
193 | mov [ecx+4], esi |
194 | lea eax, [ecx+8] |
194 | lea eax, [ecx+8] |
195 | jmp .done |
195 | jmp .done |
196 | 196 | ||
197 | .fail: |
197 | .fail: |
198 | xor eax, eax |
198 | xor eax, eax |
199 | jmp .done |
199 | jmp .done |
200 | 200 | ||
201 | ; param |
201 | ; param |
202 | ; eax= mem |
202 | ; eax= mem |
203 | align 4 |
203 | align 4 |
204 | free: |
204 | free: |
205 | test eax, eax |
205 | test eax, eax |
206 | jz .exit |
206 | jz .exit |
207 | 207 | ||
208 | push ebx edi |
208 | push ebx edi |
209 | mov edi, eax |
209 | mov edi, eax |
210 | add edi, -8 |
210 | add edi, -8 |
211 | 211 | ||
212 | ; if(p->head & CINUSE_BIT) |
212 | ; if(p->head & CINUSE_BIT) |
213 | 213 | ||
214 | test byte [edi+4], 2 |
214 | test byte [edi+4], 2 |
215 | je .fail |
215 | je .fail |
216 | 216 | ||
217 | mov ecx, mst.mutex |
217 | mov ecx, mst.mutex |
218 | call mutex_lock |
218 | call mutex_lock |
219 | 219 | ||
220 | ; psize = p->head & (~3); |
220 | ; psize = p->head & (~3); |
221 | 221 | ||
222 | mov eax, [edi+4] |
222 | mov eax, [edi+4] |
223 | push esi |
223 | push esi |
224 | mov esi, eax |
224 | mov esi, eax |
225 | and esi, -4 |
225 | and esi, -4 |
226 | 226 | ||
227 | ; next = chunk_plus_offset(p, psize); |
227 | ; next = chunk_plus_offset(p, psize); |
228 | ; if(!(p->head & PINUSE_BIT)) |
228 | ; if(!(p->head & PINUSE_BIT)) |
229 | 229 | ||
230 | test al, 1 |
230 | test al, 1 |
231 | lea ebx, [esi+edi] |
231 | lea ebx, [esi+edi] |
232 | jne .next |
232 | jne .next |
233 | 233 | ||
234 | ; prevsize = p->prev_foot; |
234 | ; prevsize = p->prev_foot; |
235 | ; prev=p - prevsize; |
235 | ; prev=p - prevsize; |
236 | ; psize += prevsize; |
236 | ; psize += prevsize; |
237 | ; p = prev; |
237 | ; p = prev; |
238 | 238 | ||
239 | mov ecx, [edi] ;ecx= prevsize |
239 | mov ecx, [edi] ;ecx= prevsize |
240 | add esi, ecx ;esi= psize |
240 | add esi, ecx ;esi= psize |
241 | sub edi, ecx ;edi= p |
241 | sub edi, ecx ;edi= p |
242 | 242 | ||
243 | ; if (prevsize < 256) |
243 | ; if (prevsize < 256) |
244 | 244 | ||
245 | cmp ecx, 256 |
245 | cmp ecx, 256 |
246 | jae .unlink_large |
246 | jae .unlink_large |
247 | 247 | ||
248 | mov eax, [edi+8] ;F = p->fd; |
248 | mov eax, [edi+8] ;F = p->fd; |
249 | mov edx, [edi+12] ;B = p->bk; |
249 | mov edx, [edi+12] ;B = p->bk; |
250 | 250 | ||
251 | ; if (F == B) |
251 | ; if (F == B) |
252 | ; ms.smallmap &= ~(1<< I); |
252 | ; ms.smallmap &= ~(1<< I); |
253 | shr ecx, 3 |
253 | shr ecx, 3 |
254 | cmp eax, edx |
254 | cmp eax, edx |
255 | jne @F |
255 | jne @F |
256 | btr [mst.smallmap], ecx |
256 | btr [mst.smallmap], ecx |
257 | @@: |
257 | @@: |
258 | mov [eax+12], edx ;F->bk = B; |
258 | mov [eax+12], edx ;F->bk = B; |
259 | mov [edx+8], eax ;B->fd = F |
259 | mov [edx+8], eax ;B->fd = F |
260 | jmp .next |
260 | jmp .next |
261 | .unlink_large: |
261 | .unlink_large: |
262 | mov edx, edi |
262 | mov edx, edi |
263 | call unlink_large_chunk |
263 | call unlink_large_chunk |
264 | .next: |
264 | .next: |
265 | 265 | ||
266 | ; if(next->head & PINUSE_BIT) |
266 | ; if(next->head & PINUSE_BIT) |
267 | 267 | ||
268 | mov eax, [ebx+4] |
268 | mov eax, [ebx+4] |
269 | test al, 1 |
269 | test al, 1 |
270 | jz .fail2 |
270 | jz .fail2 |
271 | 271 | ||
272 | ; if (! (next->head & CINUSE_BIT)) |
272 | ; if (! (next->head & CINUSE_BIT)) |
273 | 273 | ||
274 | test al, 2 |
274 | test al, 2 |
275 | jnz .fix_next |
275 | jnz .fix_next |
276 | 276 | ||
277 | ; if (next == ms.top) |
277 | ; if (next == ms.top) |
278 | 278 | ||
279 | cmp ebx, [mst.top] |
279 | cmp ebx, [mst.top] |
280 | jne @F |
280 | jne @F |
281 | 281 | ||
282 | ; tsize = ms.topsize += psize; |
282 | ; tsize = ms.topsize += psize; |
283 | 283 | ||
284 | mov eax, [mst.topsize] |
284 | mov eax, [mst.topsize] |
285 | add eax, esi |
285 | add eax, esi |
286 | mov [mst.topsize], eax |
286 | mov [mst.topsize], eax |
287 | 287 | ||
288 | ; ms.top = p; |
288 | ; ms.top = p; |
289 | ; p->head = tsize | PINUSE_BIT; |
289 | ; p->head = tsize | PINUSE_BIT; |
290 | 290 | ||
291 | or eax, 1 |
291 | or eax, 1 |
292 | mov [mst.top], edi |
292 | mov [mst.top], edi |
293 | mov [edi+4], eax |
293 | mov [edi+4], eax |
294 | .fail2: |
294 | .fail2: |
295 | mov esi, eax |
295 | mov esi, eax |
296 | mov ecx, mst.mutex |
296 | mov ecx, mst.mutex |
297 | call mutex_unlock |
297 | call mutex_unlock |
298 | mov eax, esi |
298 | mov eax, esi |
299 | pop esi |
299 | pop esi |
300 | .fail: |
300 | .fail: |
301 | pop edi ebx |
301 | pop edi ebx |
302 | .exit: |
302 | .exit: |
303 | ret |
303 | ret |
304 | 304 | ||
305 | @@: |
305 | @@: |
306 | 306 | ||
307 | ; nsize = next->head & ~INUSE_BITS; |
307 | ; nsize = next->head & ~INUSE_BITS; |
308 | 308 | ||
309 | and eax, -4 |
309 | and eax, -4 |
310 | add esi, eax ;psize += nsize; |
310 | add esi, eax ;psize += nsize; |
311 | 311 | ||
312 | ; if (nsize < 256) |
312 | ; if (nsize < 256) |
313 | 313 | ||
314 | cmp eax, 256 |
314 | cmp eax, 256 |
315 | jae .unl_large |
315 | jae .unl_large |
316 | 316 | ||
317 | mov edx, [ebx+8] ;F = next->fd |
317 | mov edx, [ebx+8] ;F = next->fd |
318 | mov ebx, [ebx+12] ;B = next->bk |
318 | mov ebx, [ebx+12] ;B = next->bk |
319 | 319 | ||
320 | ; if (F == B) |
320 | ; if (F == B) |
321 | 321 | ||
322 | cmp edx, ebx |
322 | cmp edx, ebx |
323 | jne @F |
323 | jne @F |
324 | mov ecx, eax |
324 | mov ecx, eax |
325 | shr ecx, 3 |
325 | shr ecx, 3 |
326 | btr [mst.smallmap], ecx |
326 | btr [mst.smallmap], ecx |
327 | @@: |
327 | @@: |
328 | mov [edx+12], ebx ;F->bk = B |
328 | mov [edx+12], ebx ;F->bk = B |
329 | 329 | ||
330 | ; p->head = psize|PINUSE_BIT; |
330 | ; p->head = psize|PINUSE_BIT; |
331 | 331 | ||
332 | mov ecx, esi |
332 | mov ecx, esi |
333 | mov [ebx+8], edx |
333 | mov [ebx+8], edx |
334 | or ecx, 1 |
334 | or ecx, 1 |
335 | mov [edi+4], ecx |
335 | mov [edi+4], ecx |
336 | 336 | ||
337 | ; (p+psize)->prev_foot = psize; |
337 | ; (p+psize)->prev_foot = psize; |
338 | 338 | ||
339 | mov [esi+edi], esi |
339 | mov [esi+edi], esi |
340 | 340 | ||
341 | ; insert_chunk(p,psize); |
341 | ; insert_chunk(p,psize); |
342 | 342 | ||
343 | mov eax, esi |
343 | mov eax, esi |
344 | mov ecx, edi |
344 | mov ecx, edi |
345 | call insert_chunk |
345 | call insert_chunk |
346 | jmp .fail2 |
346 | jmp .fail2 |
347 | .unl_large: |
347 | .unl_large: |
348 | 348 | ||
349 | ; unlink_large_chunk((tchunkptr)next); |
349 | ; unlink_large_chunk((tchunkptr)next); |
350 | 350 | ||
351 | mov edx, ebx |
351 | mov edx, ebx |
352 | call unlink_large_chunk |
352 | call unlink_large_chunk |
353 | ; p->head = psize|PINUSE_BIT; |
353 | ; p->head = psize|PINUSE_BIT; |
354 | 354 | ||
355 | mov ecx, esi |
355 | mov ecx, esi |
356 | or ecx, 1 |
356 | or ecx, 1 |
357 | mov [edi+4], ecx |
357 | mov [edi+4], ecx |
358 | 358 | ||
359 | ; (p+psize)->prev_foot = psize; |
359 | ; (p+psize)->prev_foot = psize; |
360 | 360 | ||
361 | mov [esi+edi], esi |
361 | mov [esi+edi], esi |
362 | 362 | ||
363 | ; insert_chunk(p,psize); |
363 | ; insert_chunk(p,psize); |
364 | 364 | ||
365 | mov eax, esi |
365 | mov eax, esi |
366 | mov ecx, edi |
366 | mov ecx, edi |
367 | call insert_chunk |
367 | call insert_chunk |
368 | jmp .fail2 |
368 | jmp .fail2 |
369 | .fix_next: |
369 | .fix_next: |
370 | 370 | ||
371 | ; (p+psize)->prev_foot = psize; |
371 | ; (p+psize)->prev_foot = psize; |
372 | ; next->head &= ~PINUSE_BIT; |
372 | ; next->head &= ~PINUSE_BIT; |
373 | ; p->head = psize|PINUSE_BIT; |
373 | ; p->head = psize|PINUSE_BIT; |
374 | 374 | ||
375 | and eax, -2 |
375 | and eax, -2 |
376 | mov edx, esi |
376 | mov edx, esi |
377 | mov [ebx+4], eax |
377 | mov [ebx+4], eax |
378 | or edx, 1 |
378 | or edx, 1 |
379 | mov [edi+4], edx |
379 | mov [edi+4], edx |
380 | 380 | ||
381 | ; (p+psize)->prev_foot = psize; |
381 | ; (p+psize)->prev_foot = psize; |
382 | 382 | ||
383 | mov [esi+edi], esi |
383 | mov [esi+edi], esi |
384 | ; insert_chunk(p,psize); |
384 | ; insert_chunk(p,psize); |
385 | 385 | ||
386 | mov eax, esi |
386 | mov eax, esi |
387 | mov ecx, edi |
387 | mov ecx, edi |
388 | call insert_chunk |
388 | call insert_chunk |
389 | jmp .fail2 |
389 | jmp .fail2 |
390 | 390 | ||
391 | ; param |
391 | ; param |
392 | ; ecx = chunk |
392 | ; ecx = chunk |
393 | ; eax = size |
393 | ; eax = size |
394 | 394 | ||
395 | insert_chunk: |
395 | insert_chunk: |
396 | 396 | ||
397 | cmp eax, 256 |
397 | cmp eax, 256 |
398 | push esi |
398 | push esi |
399 | mov esi, ecx |
399 | mov esi, ecx |
400 | jae .large |
400 | jae .large |
401 | 401 | ||
402 | ; I = S>>3; |
402 | ; I = S>>3; |
403 | ; ms.smallmap |= 1<< I; |
403 | ; ms.smallmap |= 1<< I; |
404 | 404 | ||
405 | shr eax, 3 |
405 | shr eax, 3 |
406 | bts [mst.smallmap], eax |
406 | bts [mst.smallmap], eax |
407 | 407 | ||
408 | ; B = &ms.smallbins[I]; |
408 | ; B = &ms.smallbins[I]; |
409 | 409 | ||
410 | shl eax, 4 |
410 | shl eax, 4 |
411 | add eax, mst.smallbins |
411 | add eax, mst.smallbins |
412 | mov edx, [eax+8] ;F = B->fd |
412 | mov edx, [eax+8] ;F = B->fd |
413 | mov [eax+8], esi ;B->fd = P |
413 | mov [eax+8], esi ;B->fd = P |
414 | mov [edx+12], esi ;F->bk = P |
414 | mov [edx+12], esi ;F->bk = P |
415 | mov [esi+8], edx ;P->fd = F |
415 | mov [esi+8], edx ;P->fd = F |
416 | mov [esi+12], eax ;P->bk = B |
416 | mov [esi+12], eax ;P->bk = B |
417 | pop esi |
417 | pop esi |
418 | ret |
418 | ret |
419 | .large: |
419 | .large: |
420 | mov ebx, eax |
420 | mov ebx, eax |
421 | call insert_large_chunk |
421 | call insert_large_chunk |
422 | pop esi |
422 | pop esi |
423 | ret |
423 | ret |
424 | 424 | ||
425 | 425 | ||
426 | ; param |
426 | ; param |
427 | ; esi= chunk |
427 | ; esi= chunk |
428 | ; ebx= size |
428 | ; ebx= size |
429 | 429 | ||
430 | insert_large_chunk: |
430 | insert_large_chunk: |
431 | 431 | ||
432 | ; I = compute_tree_index(S); |
432 | ; I = compute_tree_index(S); |
433 | 433 | ||
434 | mov edx, ebx |
434 | mov edx, ebx |
435 | shr edx, 8 |
435 | shr edx, 8 |
436 | bsr eax, edx |
436 | bsr eax, edx |
437 | lea ecx, [eax+7] |
437 | lea ecx, [eax+7] |
438 | mov edx, ebx |
438 | mov edx, ebx |
439 | shr edx, cl |
439 | shr edx, cl |
440 | and edx, 1 |
440 | and edx, 1 |
441 | lea ecx, [edx+eax*2] |
441 | lea ecx, [edx+eax*2] |
442 | 442 | ||
443 | ; X->index = I; |
443 | ; X->index = I; |
444 | mov dword [esi+28], ecx |
444 | mov dword [esi+28], ecx |
445 | 445 | ||
446 | ; X->child[0] = X->child[1] = 0; |
446 | ; X->child[0] = X->child[1] = 0; |
447 | and dword [esi+20], 0 |
447 | and dword [esi+20], 0 |
448 | and dword [esi+16], 0 |
448 | and dword [esi+16], 0 |
449 | 449 | ||
450 | ; H = &ms.treebins[I]; |
450 | ; H = &ms.treebins[I]; |
451 | 451 | ||
452 | mov eax, ecx |
452 | mov eax, ecx |
453 | lea edx, [mst.treebins+eax*4] |
453 | lea edx, [mst.treebins+eax*4] |
454 | 454 | ||
455 | ; if (!(ms.treemap & 1< |
455 | ; if (!(ms.treemap & 1< |
456 | bt [mst.treemap], ecx |
456 | bt [mst.treemap], ecx |
457 | jc .tree |
457 | jc .tree |
458 | 458 | ||
459 | ; ms.treemap |= 1< |
459 | ; ms.treemap |= 1< |
460 | bts [mst.treemap], ecx |
460 | bts [mst.treemap], ecx |
461 | ; *H = X; |
461 | ; *H = X; |
462 | mov dword [edx], esi |
462 | mov dword [edx], esi |
463 | jmp .done |
463 | jmp .done |
464 | .tree: |
464 | .tree: |
465 | 465 | ||
466 | ; T = *H; |
466 | ; T = *H; |
467 | mov edx, [edx] |
467 | mov edx, [edx] |
468 | 468 | ||
469 | ; K = S << leftshift_for_tree_index(I); |
469 | ; K = S << leftshift_for_tree_index(I); |
470 | mov eax, ecx |
470 | mov eax, ecx |
471 | shr eax, 1 |
471 | shr eax, 1 |
472 | sub ecx, 31 |
472 | sub ecx, 31 |
473 | mov edi, 37 |
473 | mov edi, 37 |
474 | sub edi, eax |
474 | sub edi, eax |
475 | neg ecx |
475 | neg ecx |
476 | sbb ecx, ecx |
476 | sbb ecx, ecx |
477 | and ecx, edi |
477 | and ecx, edi |
478 | mov eax, ebx |
478 | mov eax, ebx |
479 | shl eax, cl ;eax= K |
479 | shl eax, cl ;eax= K |
480 | 480 | ||
481 | jmp .loop |
481 | jmp .loop |
482 | .not_eq_size: |
482 | .not_eq_size: |
483 | 483 | ||
484 | ; C = &(T->child[(K >> 31) & 1]); |
484 | ; C = &(T->child[(K >> 31) & 1]); |
485 | mov ecx, eax |
485 | mov ecx, eax |
486 | shr ecx, 31 |
486 | shr ecx, 31 |
487 | lea ecx, [edx+ecx*4+16] |
487 | lea ecx, [edx+ecx*4+16] |
488 | 488 | ||
489 | ; K <<= 1; |
489 | ; K <<= 1; |
490 | ; if (*C != 0) |
490 | ; if (*C != 0) |
491 | mov edi, [ecx] |
491 | mov edi, [ecx] |
492 | add eax, eax |
492 | add eax, eax |
493 | test edi, edi |
493 | test edi, edi |
494 | jz .insert_child |
494 | jz .insert_child |
495 | 495 | ||
496 | ; T = *C; |
496 | ; T = *C; |
497 | mov edx, edi |
497 | mov edx, edi |
498 | .loop: |
498 | .loop: |
499 | 499 | ||
500 | ; for (;;) |
500 | ; for (;;) |
501 | ; if ((T->head & ~INUSE_BITS) != S) |
501 | ; if ((T->head & ~INUSE_BITS) != S) |
502 | 502 | ||
503 | mov ecx, [edx+4] |
503 | mov ecx, [edx+4] |
504 | and ecx, not 3 |
504 | and ecx, not 3 |
505 | cmp ecx, ebx |
505 | cmp ecx, ebx |
506 | jne .not_eq_size |
506 | jne .not_eq_size |
507 | 507 | ||
508 | ; F = T->fd; |
508 | ; F = T->fd; |
509 | mov eax, [edx+8] |
509 | mov eax, [edx+8] |
510 | 510 | ||
511 | ; T->fd = F->bk = X; |
511 | ; T->fd = F->bk = X; |
512 | mov [eax+12], esi |
512 | mov [eax+12], esi |
513 | mov [edx+8], esi |
513 | mov [edx+8], esi |
514 | 514 | ||
515 | ; X->fd = F; |
515 | ; X->fd = F; |
516 | ; X->bk = T; |
516 | ; X->bk = T; |
517 | ; X->parent = 0; |
517 | ; X->parent = 0; |
518 | 518 | ||
519 | and dword [esi+24], 0 |
519 | and dword [esi+24], 0 |
520 | mov [esi+8], eax |
520 | mov [esi+8], eax |
521 | mov [esi+12], edx |
521 | mov [esi+12], edx |
522 | ret |
522 | ret |
523 | .insert_child: |
523 | .insert_child: |
524 | 524 | ||
525 | ; *C = X; |
525 | ; *C = X; |
526 | mov [ecx], esi |
526 | mov [ecx], esi |
527 | .done: |
527 | .done: |
528 | 528 | ||
529 | ; X->parent = T; |
529 | ; X->parent = T; |
530 | mov [esi+24], edx |
530 | mov [esi+24], edx |
531 | 531 | ||
532 | ; X->fd = X->bk = X; |
532 | ; X->fd = X->bk = X; |
533 | mov [esi+12], esi |
533 | mov [esi+12], esi |
534 | mov [esi+8], esi |
534 | mov [esi+8], esi |
535 | ret |
535 | ret |
536 | 536 | ||
537 | 537 | ||
538 | ; param |
538 | ; param |
539 | ; edx= chunk |
539 | ; edx= chunk |
540 | 540 | ||
541 | unlink_large_chunk: |
541 | unlink_large_chunk: |
542 | 542 | ||
543 | mov eax, [edx+12] |
543 | mov eax, [edx+12] |
544 | cmp eax, edx |
544 | cmp eax, edx |
545 | push edi |
545 | push edi |
546 | mov edi, [edx+24] |
546 | mov edi, [edx+24] |
547 | je @F |
547 | je @F |
548 | 548 | ||
549 | mov ecx, [edx+8] ;F = X->fd |
549 | mov ecx, [edx+8] ;F = X->fd |
550 | mov [ecx+12], eax ;F->bk = R; |
550 | mov [ecx+12], eax ;F->bk = R; |
551 | mov [eax+8], ecx ;R->fd = F |
551 | mov [eax+8], ecx ;R->fd = F |
552 | jmp .parent |
552 | jmp .parent |
553 | @@: |
553 | @@: |
554 | mov eax, [edx+20] |
554 | mov eax, [edx+20] |
555 | test eax, eax |
555 | test eax, eax |
556 | push esi |
556 | push esi |
557 | lea esi, [edx+20] |
557 | lea esi, [edx+20] |
558 | jne .loop |
558 | jne .loop |
559 | 559 | ||
560 | mov eax, [edx+16] |
560 | mov eax, [edx+16] |
561 | test eax, eax |
561 | test eax, eax |
562 | lea esi, [edx+16] |
562 | lea esi, [edx+16] |
563 | je .l2 |
563 | je .l2 |
564 | .loop: |
564 | .loop: |
565 | cmp dword [eax+20], 0 |
565 | cmp dword [eax+20], 0 |
566 | lea ecx, [eax+20] |
566 | lea ecx, [eax+20] |
567 | jne @F |
567 | jne @F |
568 | 568 | ||
569 | cmp dword [eax+16], 0 |
569 | cmp dword [eax+16], 0 |
570 | lea ecx, [eax+16] |
570 | lea ecx, [eax+16] |
571 | je .l1 |
571 | je .l1 |
572 | @@: |
572 | @@: |
573 | mov eax, [ecx] |
573 | mov eax, [ecx] |
574 | mov esi, ecx |
574 | mov esi, ecx |
575 | jmp .loop |
575 | jmp .loop |
576 | .l1: |
576 | .l1: |
577 | mov dword [esi], 0 |
577 | mov dword [esi], 0 |
578 | .l2: |
578 | .l2: |
579 | pop esi |
579 | pop esi |
580 | .parent: |
580 | .parent: |
581 | test edi, edi |
581 | test edi, edi |
582 | je .done |
582 | je .done |
583 | 583 | ||
584 | mov ecx, [edx+28] |
584 | mov ecx, [edx+28] |
585 | cmp edx, [mst.treebins+ecx*4] |
585 | cmp edx, [mst.treebins+ecx*4] |
586 | lea ecx, [mst.treebins+ecx*4] |
586 | lea ecx, [mst.treebins+ecx*4] |
587 | jne .l3 |
587 | jne .l3 |
588 | 588 | ||
589 | test eax, eax |
589 | test eax, eax |
590 | mov [ecx], eax |
590 | mov [ecx], eax |
591 | jne .l5 |
591 | jne .l5 |
592 | 592 | ||
593 | mov ecx, [edx+28] |
593 | mov ecx, [edx+28] |
594 | btr [mst.treemap], ecx |
594 | btr [mst.treemap], ecx |
595 | pop edi |
595 | pop edi |
596 | ret |
596 | ret |
597 | 597 | ||
598 | .l3: |
598 | .l3: |
599 | cmp [edi+16], edx |
599 | cmp [edi+16], edx |
600 | jne @F |
600 | jne @F |
601 | 601 | ||
602 | mov [edi+16], eax |
602 | mov [edi+16], eax |
603 | jmp .l4 |
603 | jmp .l4 |
604 | 604 | ||
605 | @@: |
605 | @@: |
606 | mov [edi+20], eax |
606 | mov [edi+20], eax |
607 | 607 | ||
608 | .l4: |
608 | .l4: |
609 | test eax, eax |
609 | test eax, eax |
610 | je .done |
610 | je .done |
611 | 611 | ||
612 | .l5: |
612 | .l5: |
613 | mov [eax+24], edi |
613 | mov [eax+24], edi |
614 | mov ecx, [edx+16] |
614 | mov ecx, [edx+16] |
615 | test ecx, ecx |
615 | test ecx, ecx |
616 | je .l6 |
616 | je .l6 |
617 | 617 | ||
618 | mov [eax+16], ecx |
618 | mov [eax+16], ecx |
619 | mov [ecx+24], eax |
619 | mov [ecx+24], eax |
620 | 620 | ||
621 | .l6: |
621 | .l6: |
622 | mov edx, [edx+20] |
622 | mov edx, [edx+20] |
623 | test edx, edx |
623 | test edx, edx |
624 | je .done |
624 | je .done |
625 | 625 | ||
626 | mov [eax+20], edx |
626 | mov [eax+20], edx |
627 | mov [edx+24], eax |
627 | mov [edx+24], eax |
628 | 628 | ||
629 | .done: |
629 | .done: |
630 | pop edi |
630 | pop edi |
631 | ret |
631 | ret |
632 | 632 | ||
633 | ; param |
633 | ; param |
634 | ; esi= nb |
634 | ; esi= nb |
635 | 635 | ||
636 | malloc_small: |
636 | malloc_small: |
637 | push ebp |
637 | push ebp |
638 | mov ebp, esi |
638 | mov ebp, esi |
639 | 639 | ||
640 | push edi |
640 | push edi |
641 | 641 | ||
642 | bsf eax, [mst.treemap] |
642 | bsf eax, [mst.treemap] |
643 | mov ecx, [mst.treebins+eax*4] |
643 | mov ecx, [mst.treebins+eax*4] |
644 | 644 | ||
645 | ; rsize = (t->head & ~INUSE_BITS) - nb; |
645 | ; rsize = (t->head & ~INUSE_BITS) - nb; |
646 | 646 | ||
647 | mov edi, [ecx+4] |
647 | mov edi, [ecx+4] |
648 | and edi, -4 |
648 | and edi, -4 |
649 | sub edi, esi |
649 | sub edi, esi |
650 | 650 | ||
651 | .loop: |
651 | .loop: |
652 | mov ebx, ecx |
652 | mov ebx, ecx |
653 | 653 | ||
654 | .loop_1: |
654 | .loop_1: |
655 | 655 | ||
656 | ; while ((t = leftmost_child(t)) != 0) |
656 | ; while ((t = leftmost_child(t)) != 0) |
657 | 657 | ||
658 | mov eax, [ecx+16] |
658 | mov eax, [ecx+16] |
659 | test eax, eax |
659 | test eax, eax |
660 | jz @F |
660 | jz @F |
661 | mov ecx, eax |
661 | mov ecx, eax |
662 | jmp .l1 |
662 | jmp .l1 |
663 | 663 | ||
664 | @@: |
664 | @@: |
665 | mov ecx, [ecx+20] |
665 | mov ecx, [ecx+20] |
666 | 666 | ||
667 | .l1: |
667 | .l1: |
668 | test ecx, ecx |
668 | test ecx, ecx |
669 | jz .unlink |
669 | jz .unlink |
670 | 670 | ||
671 | ; trem = (t->head & ~INUSE_BITS) - nb; |
671 | ; trem = (t->head & ~INUSE_BITS) - nb; |
672 | 672 | ||
673 | mov eax, [ecx+4] |
673 | mov eax, [ecx+4] |
674 | and eax, -4 |
674 | and eax, -4 |
675 | sub eax, ebp |
675 | sub eax, ebp |
676 | 676 | ||
677 | ; if (trem < rsize) |
677 | ; if (trem < rsize) |
678 | 678 | ||
679 | cmp eax, edi |
679 | cmp eax, edi |
680 | jae .loop_1 |
680 | jae .loop_1 |
681 | 681 | ||
682 | ; rsize = trem; |
682 | ; rsize = trem; |
683 | 683 | ||
684 | mov edi, eax |
684 | mov edi, eax |
685 | jmp .loop |
685 | jmp .loop |
686 | .unlink: |
686 | .unlink: |
687 | 687 | ||
688 | 688 | ||
689 | ; r = chunk_plus_offset((mchunkptr)v, nb); |
689 | ; r = chunk_plus_offset((mchunkptr)v, nb); |
690 | ; unlink_large_chunk(v); |
690 | ; unlink_large_chunk(v); |
691 | 691 | ||
692 | mov edx, ebx |
692 | mov edx, ebx |
693 | lea esi, [ebx+ebp] |
693 | lea esi, [ebx+ebp] |
694 | call unlink_large_chunk |
694 | call unlink_large_chunk |
695 | 695 | ||
696 | ; if (rsize < 16) |
696 | ; if (rsize < 16) |
697 | 697 | ||
698 | cmp edi, 16 |
698 | cmp edi, 16 |
699 | jae .split |
699 | jae .split |
700 | 700 | ||
701 | ; v->head = (rsize + nb)|PINUSE_BIT|CINUSE_BIT; |
701 | ; v->head = (rsize + nb)|PINUSE_BIT|CINUSE_BIT; |
702 | 702 | ||
703 | lea ecx, [edi+ebp] |
703 | lea ecx, [edi+ebp] |
704 | 704 | ||
705 | ; (v+rsize + nb)->head |= PINUSE_BIT; |
705 | ; (v+rsize + nb)->head |= PINUSE_BIT; |
706 | 706 | ||
707 | add edi, ebx |
707 | add edi, ebx |
708 | lea eax, [edi+ebp+4] |
708 | lea eax, [edi+ebp+4] |
709 | pop edi |
709 | pop edi |
710 | or ecx, 3 |
710 | or ecx, 3 |
711 | mov [ebx+4], ecx |
711 | mov [ebx+4], ecx |
712 | or dword [eax], 1 |
712 | or dword [eax], 1 |
713 | pop ebp |
713 | pop ebp |
714 | 714 | ||
715 | lea eax, [ebx+8] |
715 | lea eax, [ebx+8] |
716 | ret |
716 | ret |
717 | 717 | ||
718 | .split: |
718 | .split: |
719 | 719 | ||
720 | ; v->head = nb|PINUSE_BIT|CINUSE_BIT; |
720 | ; v->head = nb|PINUSE_BIT|CINUSE_BIT; |
721 | ; r->head = rsize|PINUSE_BIT; |
721 | ; r->head = rsize|PINUSE_BIT; |
722 | ; (r+rsize)->prev_foot = rsize; |
722 | ; (r+rsize)->prev_foot = rsize; |
723 | 723 | ||
724 | or ebp, 3 |
724 | or ebp, 3 |
725 | mov edx, edi |
725 | mov edx, edi |
726 | or edx, 1 |
726 | or edx, 1 |
727 | 727 | ||
728 | cmp edi, 256 |
728 | cmp edi, 256 |
729 | mov [ebx+4], ebp |
729 | mov [ebx+4], ebp |
730 | mov [esi+4], edx |
730 | mov [esi+4], edx |
731 | mov [esi+edi], edi |
731 | mov [esi+edi], edi |
732 | jae .large |
732 | jae .large |
733 | 733 | ||
734 | shr edi, 3 |
734 | shr edi, 3 |
735 | bts [mst.smallmap], edi |
735 | bts [mst.smallmap], edi |
736 | 736 | ||
737 | mov eax, edi |
737 | mov eax, edi |
738 | shl eax, 4 |
738 | shl eax, 4 |
739 | add eax, mst.smallbins |
739 | add eax, mst.smallbins |
740 | 740 | ||
741 | mov edx, [eax+8] |
741 | mov edx, [eax+8] |
742 | mov [eax+8], esi |
742 | mov [eax+8], esi |
743 | mov [edx+12], esi |
743 | mov [edx+12], esi |
744 | pop edi |
744 | pop edi |
745 | mov [esi+12], eax |
745 | mov [esi+12], eax |
746 | mov [esi+8], edx |
746 | mov [esi+8], edx |
747 | pop ebp |
747 | pop ebp |
748 | lea eax, [ebx+8] |
748 | lea eax, [ebx+8] |
749 | ret |
749 | ret |
750 | 750 | ||
751 | .large: |
751 | .large: |
752 | lea eax, [ebx+8] |
752 | lea eax, [ebx+8] |
753 | push eax |
753 | push eax |
754 | mov ebx, edi |
754 | mov ebx, edi |
755 | call insert_large_chunk |
755 | call insert_large_chunk |
756 | pop eax |
756 | pop eax |
757 | pop edi |
757 | pop edi |
758 | pop ebp |
758 | pop ebp |
759 | ret |
759 | ret |
760 | 760 | ||
761 | 761 | ||
762 | ; param |
762 | ; param |
763 | ; esi= nb |
763 | ; esi= nb |
764 | 764 | ||
765 | malloc_large: |
765 | malloc_large: |
766 | .idx equ esp+4 |
766 | .idx equ esp+4 |
767 | .rst equ esp |
767 | .rst equ esp |
768 | 768 | ||
769 | push ebp |
769 | push ebp |
770 | push esi |
770 | push esi |
771 | push edi |
771 | push edi |
772 | sub esp, 8 |
772 | sub esp, 8 |
773 | ; v = 0; |
773 | ; v = 0; |
774 | ; rsize = -nb; |
774 | ; rsize = -nb; |
775 | 775 | ||
776 | mov edi, esi |
776 | mov edi, esi |
777 | mov ebx, esi |
777 | mov ebx, esi |
778 | xor ebp, ebp |
778 | xor ebp, ebp |
779 | neg edi |
779 | neg edi |
780 | 780 | ||
781 | ; idx = compute_tree_index(nb); |
781 | ; idx = compute_tree_index(nb); |
782 | 782 | ||
783 | mov edx, esi |
783 | mov edx, esi |
784 | shr edx, 8 |
784 | shr edx, 8 |
785 | bsr eax, edx |
785 | bsr eax, edx |
786 | lea ecx, [eax+7] |
786 | lea ecx, [eax+7] |
787 | shr esi, cl |
787 | shr esi, cl |
788 | and esi, 1 |
788 | and esi, 1 |
789 | lea ecx, [esi+eax*2] |
789 | lea ecx, [esi+eax*2] |
790 | mov [.idx], ecx |
790 | mov [.idx], ecx |
791 | 791 | ||
792 | ; if ((t = ms.treebins[idx]) != 0) |
792 | ; if ((t = ms.treebins[idx]) != 0) |
793 | 793 | ||
794 | mov eax, [mst.treebins+ecx*4] |
794 | mov eax, [mst.treebins+ecx*4] |
795 | test eax, eax |
795 | test eax, eax |
796 | jz .l3 |
796 | jz .l3 |
797 | 797 | ||
798 | ; sizebits = nb << leftshift_for_tree_index(idx); |
798 | ; sizebits = nb << leftshift_for_tree_index(idx); |
799 | 799 | ||
800 | cmp ecx, 31 |
800 | cmp ecx, 31 |
801 | jne @F |
801 | jne @F |
802 | xor ecx, ecx |
802 | xor ecx, ecx |
803 | jmp .l1 |
803 | jmp .l1 |
804 | 804 | ||
805 | @@: |
805 | @@: |
806 | mov edx, ecx |
806 | mov edx, ecx |
807 | shr edx, 1 |
807 | shr edx, 1 |
808 | mov ecx, 37 |
808 | mov ecx, 37 |
809 | sub ecx, edx |
809 | sub ecx, edx |
810 | 810 | ||
811 | .l1: |
811 | .l1: |
812 | mov edx, ebx |
812 | mov edx, ebx |
813 | shl edx, cl |
813 | shl edx, cl |
814 | 814 | ||
815 | ; rst = 0; |
815 | ; rst = 0; |
816 | mov [.rst], ebp |
816 | mov [.rst], ebp |
817 | 817 | ||
818 | .loop: |
818 | .loop: |
819 | 819 | ||
820 | ; trem = (t->head & ~INUSE_BITS) - nb; |
820 | ; trem = (t->head & ~INUSE_BITS) - nb; |
821 | 821 | ||
822 | mov ecx, [eax+4] |
822 | mov ecx, [eax+4] |
823 | and ecx, -4 |
823 | and ecx, -4 |
824 | sub ecx, ebx |
824 | sub ecx, ebx |
825 | 825 | ||
826 | ; if (trem < rsize) |
826 | ; if (trem < rsize) |
827 | 827 | ||
828 | cmp ecx, edi |
828 | cmp ecx, edi |
829 | jae @F |
829 | jae @F |
830 | ; v = t; |
830 | ; v = t; |
831 | ; if ((rsize = trem) == 0) |
831 | ; if ((rsize = trem) == 0) |
832 | 832 | ||
833 | test ecx, ecx |
833 | test ecx, ecx |
834 | mov ebp, eax |
834 | mov ebp, eax |
835 | mov edi, ecx |
835 | mov edi, ecx |
836 | je .l2 |
836 | je .l2 |
837 | 837 | ||
838 | @@: |
838 | @@: |
839 | 839 | ||
840 | ; rt = t->child[1]; |
840 | ; rt = t->child[1]; |
841 | 841 | ||
842 | mov ecx, [eax+20] |
842 | mov ecx, [eax+20] |
843 | 843 | ||
844 | ; t = t->child[(sizebits >> 31) & 1]; |
844 | ; t = t->child[(sizebits >> 31) & 1]; |
845 | 845 | ||
846 | mov esi, edx |
846 | mov esi, edx |
847 | shr esi, 31 |
847 | shr esi, 31 |
848 | 848 | ||
849 | ; if (rt != 0 && rt != t) |
849 | ; if (rt != 0 && rt != t) |
850 | 850 | ||
851 | test ecx, ecx |
851 | test ecx, ecx |
852 | mov eax, [eax+esi*4+16] |
852 | mov eax, [eax+esi*4+16] |
853 | jz @F |
853 | jz @F |
854 | cmp ecx, eax |
854 | cmp ecx, eax |
855 | jz @F |
855 | jz @F |
856 | 856 | ||
857 | ; rst = rt; |
857 | ; rst = rt; |
858 | mov [.rst], ecx |
858 | mov [.rst], ecx |
859 | 859 | ||
860 | @@: |
860 | @@: |
861 | ; if (t == 0) |
861 | ; if (t == 0) |
862 | 862 | ||
863 | test eax, eax |
863 | test eax, eax |
864 | jz @F |
864 | jz @F |
865 | 865 | ||
866 | ; sizebits <<= 1; |
866 | ; sizebits <<= 1; |
867 | 867 | ||
868 | add edx, edx |
868 | add edx, edx |
869 | jmp .loop |
869 | jmp .loop |
870 | 870 | ||
871 | @@: |
871 | @@: |
872 | ; t = rst; |
872 | ; t = rst; |
873 | mov eax, [.rst] |
873 | mov eax, [.rst] |
874 | 874 | ||
875 | .l2: |
875 | .l2: |
876 | ; if (t == 0 && v == 0) |
876 | ; if (t == 0 && v == 0) |
877 | 877 | ||
878 | test eax, eax |
878 | test eax, eax |
879 | jne .l4 |
879 | jne .l4 |
880 | test ebp, ebp |
880 | test ebp, ebp |
881 | jne .l7 |
881 | jne .l7 |
882 | mov ecx, [.idx] |
882 | mov ecx, [.idx] |
883 | 883 | ||
884 | .l3: |
884 | .l3: |
885 | 885 | ||
886 | ; leftbits = (-1< |
886 | ; leftbits = (-1< |
887 | ; if (leftbits != 0) |
887 | ; if (leftbits != 0) |
888 | 888 | ||
889 | or edx, -1 |
889 | or edx, -1 |
890 | shl edx, cl |
890 | shl edx, cl |
891 | and edx, [mst.treemap] |
891 | and edx, [mst.treemap] |
892 | jz @F |
892 | jz @F |
893 | 893 | ||
894 | bsf eax, edx |
894 | bsf eax, edx |
895 | ; t = ms.treebins[i]; |
895 | ; t = ms.treebins[i]; |
896 | mov eax, [mst.treebins+eax*4] |
896 | mov eax, [mst.treebins+eax*4] |
897 | 897 | ||
898 | @@: |
898 | @@: |
899 | 899 | ||
900 | ; while (t != 0) |
900 | ; while (t != 0) |
901 | test eax, eax |
901 | test eax, eax |
902 | jz .l5 |
902 | jz .l5 |
903 | 903 | ||
904 | .l4: |
904 | .l4: |
905 | 905 | ||
906 | ; trem = (t->head & ~INUSE_BITS) - nb; |
906 | ; trem = (t->head & ~INUSE_BITS) - nb; |
907 | 907 | ||
908 | mov ecx, [eax+4] |
908 | mov ecx, [eax+4] |
909 | and ecx, -4 |
909 | and ecx, -4 |
910 | sub ecx, ebx |
910 | sub ecx, ebx |
911 | 911 | ||
912 | ; if (trem < rsize) |
912 | ; if (trem < rsize) |
913 | 913 | ||
914 | cmp ecx, edi |
914 | cmp ecx, edi |
915 | jae @F |
915 | jae @F |
916 | ; rsize = trem; |
916 | ; rsize = trem; |
917 | 917 | ||
918 | mov edi, ecx |
918 | mov edi, ecx |
919 | ; v = t; |
919 | ; v = t; |
920 | mov ebp, eax |
920 | mov ebp, eax |
921 | 921 | ||
922 | @@: |
922 | @@: |
923 | 923 | ||
924 | ; t = leftmost_child(t); |
924 | ; t = leftmost_child(t); |
925 | 925 | ||
926 | mov ecx, [eax+16] |
926 | mov ecx, [eax+16] |
927 | test ecx, ecx |
927 | test ecx, ecx |
928 | je @F |
928 | je @F |
929 | mov eax, ecx |
929 | mov eax, ecx |
930 | jmp .l6 |
930 | jmp .l6 |
931 | 931 | ||
932 | @@: |
932 | @@: |
933 | mov eax, [eax+20] |
933 | mov eax, [eax+20] |
934 | 934 | ||
935 | .l6: |
935 | .l6: |
936 | 936 | ||
937 | ; while (t != 0) |
937 | ; while (t != 0) |
938 | 938 | ||
939 | test eax, eax |
939 | test eax, eax |
940 | jne .l4 |
940 | jne .l4 |
941 | 941 | ||
942 | .l5: |
942 | .l5: |
943 | 943 | ||
944 | ; if (v != 0) |
944 | ; if (v != 0) |
945 | 945 | ||
946 | test ebp, ebp |
946 | test ebp, ebp |
947 | jz .done |
947 | jz .done |
948 | 948 | ||
949 | .l7: |
949 | .l7: |
950 | 950 | ||
951 | ; r = chunk_plus_offset((mchunkptr)v, nb); |
951 | ; r = chunk_plus_offset((mchunkptr)v, nb); |
952 | ; unlink_large_chunk(v); |
952 | ; unlink_large_chunk(v); |
953 | 953 | ||
954 | mov edx, ebp |
954 | mov edx, ebp |
955 | lea esi, [ebx+ebp] |
955 | lea esi, [ebx+ebp] |
956 | call unlink_large_chunk |
956 | call unlink_large_chunk |
957 | 957 | ||
958 | ; if (rsize < 16) |
958 | ; if (rsize < 16) |
959 | 959 | ||
960 | cmp edi, 16 |
960 | cmp edi, 16 |
961 | jae .large |
961 | jae .large |
962 | 962 | ||
963 | ; v->head = (rsize + nb)|PINUSE_BIT|CINUSE_BIT; |
963 | ; v->head = (rsize + nb)|PINUSE_BIT|CINUSE_BIT; |
964 | 964 | ||
965 | lea ecx, [edi+ebx] |
965 | lea ecx, [edi+ebx] |
966 | 966 | ||
967 | ; (v+rsize + nb)->head |= PINUSE_BIT; |
967 | ; (v+rsize + nb)->head |= PINUSE_BIT; |
968 | 968 | ||
969 | add edi, ebp |
969 | add edi, ebp |
970 | lea eax, [edi+ebx+4] |
970 | lea eax, [edi+ebx+4] |
971 | or ecx, 3 |
971 | or ecx, 3 |
972 | mov [ebp+4], ecx |
972 | mov [ebp+4], ecx |
973 | or dword [eax], 1 |
973 | or dword [eax], 1 |
974 | lea eax, [ebp+8] |
974 | lea eax, [ebp+8] |
975 | add esp, 8 |
975 | add esp, 8 |
976 | pop edi |
976 | pop edi |
977 | pop esi |
977 | pop esi |
978 | pop ebp |
978 | pop ebp |
979 | ret |
979 | ret |
980 | 980 | ||
981 | .large: |
981 | .large: |
982 | 982 | ||
983 | ; v->head = nb|PINUSE_BIT|CINUSE_BIT; |
983 | ; v->head = nb|PINUSE_BIT|CINUSE_BIT; |
984 | ; r->head = rsize|PINUSE_BIT; |
984 | ; r->head = rsize|PINUSE_BIT; |
985 | 985 | ||
986 | mov edx, edi |
986 | mov edx, edi |
987 | or ebx, 3 |
987 | or ebx, 3 |
988 | mov [ebp+4], ebx |
988 | mov [ebp+4], ebx |
989 | or edx, 1 |
989 | or edx, 1 |
990 | mov [esi+4], edx |
990 | mov [esi+4], edx |
991 | 991 | ||
992 | ; (r+rsize)->prev_foot = rsize; |
992 | ; (r+rsize)->prev_foot = rsize; |
993 | ; insert_large_chunk((tchunkptr)r, rsize); |
993 | ; insert_large_chunk((tchunkptr)r, rsize); |
994 | 994 | ||
995 | mov [esi+edi], edi |
995 | mov [esi+edi], edi |
996 | mov eax, edi |
996 | mov eax, edi |
997 | mov ecx, esi |
997 | mov ecx, esi |
998 | call insert_chunk |
998 | call insert_chunk |
999 | 999 | ||
1000 | lea eax, [ebp+8] |
1000 | lea eax, [ebp+8] |
1001 | add esp, 8 |
1001 | add esp, 8 |
1002 | pop edi |
1002 | pop edi |
1003 | pop esi |
1003 | pop esi |
1004 | pop ebp |
1004 | pop ebp |
1005 | ret |
1005 | ret |
1006 | 1006 | ||
1007 | .done: |
1007 | .done: |
1008 | add esp, 8 |
1008 | add esp, 8 |
1009 | pop edi |
1009 | pop edi |
1010 | pop esi |
1010 | pop esi |
1011 | pop ebp |
1011 | pop ebp |
1012 | xor eax, eax |
1012 | xor eax, eax |
1013 | ret |
1013 | ret |
1014 | 1014 | ||
1015 | init_malloc: |
1015 | init_malloc: |
1016 | 1016 | ||
1017 | stdcall kernel_alloc, 0x40000 |
1017 | stdcall kernel_alloc, 0x40000 |
1018 | 1018 | ||
1019 | mov [mst.top], eax |
1019 | mov [mst.top], eax |
1020 | mov [mst.topsize], 128*1024 |
1020 | mov [mst.topsize], 128*1024 |
1021 | mov dword [eax+4], (128*1024) or 1 |
1021 | mov dword [eax+4], (128*1024) or 1 |
1022 | mov eax, mst.smallbins |
1022 | mov eax, mst.smallbins |
1023 | 1023 | ||
1024 | @@: |
1024 | @@: |
1025 | mov [eax+8], eax |
1025 | mov [eax+8], eax |
1026 | mov [eax+12], eax |
1026 | mov [eax+12], eax |
1027 | add eax, 16 |
1027 | add eax, 16 |
1028 | cmp eax, mst.smallbins+512 |
1028 | cmp eax, mst.smallbins+512 |
1029 | jb @B |
1029 | jb @B |
1030 | 1030 | ||
1031 | mov ecx, mst.mutex |
1031 | mov ecx, mst.mutex |
1032 | call mutex_init |
1032 | call mutex_init |
1033 | 1033 | ||
1034 | ret>> |
1034 | ret>> |
1035 | > |
1035 | > |
1036 | > |
1036 | > |
1037 | > |
1037 | > |
1038 | >><>>><>>>><>16) |
1038 | >><>>><>>>><>16) |
1039 | 1039 | ||
1040 | >3; |
1040 | >3; |
1041 | ;><3; |
1041 | ;><3; |
1042 | ;> |
1042 | ;> |