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Rev | Author | Line No. | Line |
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4997 | gtament | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2014. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
4979 | gtament | 8 | head dd 0 |
4997 | gtament | 9 | size dd 0 |
4975 | gtament | 10 | |
4997 | gtament | 11 | linkedlist_add: |
4979 | gtament | 12 | push ebx |
13 | mov ebx, [head] |
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14 | mov [head], eax |
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15 | mov [eax + node.next], ebx |
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16 | pop ebx |
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17 | ret |
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4975 | gtament | 18 | |
4997 | gtament | 19 | linkedlist_delete: |
4979 | gtament | 20 | push ebx ecx |
21 | mov ebx, eax ; eax - pointer to node for delete |
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22 | cmp eax, [head] |
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23 | jz .unlink_head |
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4975 | gtament | 24 | |
25 | .getnext: |
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4979 | gtament | 26 | cmp [ebx+node.next], eax |
27 | jz .unlink |
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28 | cmp [ebx+node.next], 0 |
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29 | jz .invalid_pointer |
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30 | mov ebx, [ebx+node.next] |
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31 | jmp .getnext |
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4975 | gtament | 32 | |
33 | .unlink: |
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4979 | gtament | 34 | mov ecx, [eax+node.next] |
35 | mov [ebx+node.next], ecx |
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36 | jmp @f |
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4997 | gtament | 37 | |
4975 | gtament | 38 | .unlink_head: |
4979 | gtament | 39 | mov ebx, [eax+node.next] |
40 | mov [head], ebx |
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4975 | gtament | 41 | @@: |
4979 | gtament | 42 | mov ecx, eax |
43 | call Kfree |
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4975 | gtament | 44 | .invalid_pointer: |
5023 | gtament | 45 | pop ecx ebx |
4979 | gtament | 46 | ret |
4997 | gtament | 47 | |
5023 | gtament | 48 | linkedlist_isvalid: ;eax - pointer to check; returns zero if valid |
4997 | gtament | 49 | push ebx ecx |
50 | xor ecx, ecx |
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5036 | gtament | 51 | test eax, eax |
52 | jz .invalid_pointer |
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4997 | gtament | 53 | mov ebx, [head] |
54 | .next_check: |
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55 | cmp eax, ebx |
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56 | jz .valid_pointer |
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57 | mov ebx, [ebx + node.next] |
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58 | test ebx, ebx |
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59 | jz .invalid_pointer |
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60 | jmp .next_check |
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61 | .invalid_pointer: |
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62 | inc ecx |
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63 | .valid_pointer: |
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64 | mov eax, ecx |
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65 | pop ecx ebx |
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66 | ret |
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4975 | gtament | 67 | |
4997 | gtament | 68 | linkedlist_gethead: |
4979 | gtament | 69 | mov eax, [head] |
70 | ret |
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4975 | gtament | 71 | |
72 | restore node |
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4979 | gtament | 73 | restore node.next |