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Rev | Author | Line No. | Line |
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431 | serge | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2007. 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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164 | serge | 7 | |
593 | mikedld | 8 | $Revision: 839 $ |
9 | |||
10 | |||
164 | serge | 11 | struc MEM_BLOCK |
12 | { .next_block dd ? |
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13 | .prev_block dd ? ;+4 |
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357 | serge | 14 | .list_fd dd ? ;+8 |
15 | .list_bk dd ? ;+12 |
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164 | serge | 16 | .base dd ? ;+16 |
17 | .size dd ? ;+20 |
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18 | .flags dd ? ;+24 |
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19 | .handle dd ? ;+28 |
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20 | } |
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21 | |||
357 | serge | 22 | MEM_LIST_OFFSET equ 8 |
164 | serge | 23 | FREE_BLOCK equ 4 |
24 | USED_BLOCK equ 8 |
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546 | diamond | 25 | DONT_FREE_BLOCK equ 10h |
164 | serge | 26 | |
27 | virtual at 0 |
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28 | MEM_BLOCK MEM_BLOCK |
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29 | end virtual |
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30 | |||
31 | MEM_BLOCK_SIZE equ 8*4 |
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32 | |||
33 | block_next equ MEM_BLOCK.next_block |
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34 | block_prev equ MEM_BLOCK.prev_block |
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357 | serge | 35 | list_fd equ MEM_BLOCK.list_fd |
36 | list_bk equ MEM_BLOCK.list_bk |
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164 | serge | 37 | block_base equ MEM_BLOCK.base |
38 | block_size equ MEM_BLOCK.size |
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39 | block_flags equ MEM_BLOCK.flags |
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40 | |||
41 | macro calc_index op |
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42 | { shr op, 12 |
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43 | dec op |
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44 | cmp op, 63 |
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45 | jna @f |
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46 | mov op, 63 |
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47 | @@: |
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48 | } |
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49 | |||
50 | macro remove_from_list op |
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357 | serge | 51 | { mov edx, [op+list_fd] |
52 | mov ecx, [op+list_bk] |
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164 | serge | 53 | test edx, edx |
54 | jz @f |
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357 | serge | 55 | mov [edx+list_bk], ecx |
164 | serge | 56 | @@: |
57 | test ecx, ecx |
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58 | jz @f |
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357 | serge | 59 | mov [ecx+list_fd], edx |
164 | serge | 60 | @@: |
357 | serge | 61 | mov [op+list_fd],0 |
62 | mov [op+list_bk],0 |
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164 | serge | 63 | } |
64 | |||
65 | macro remove_from_free op |
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66 | { |
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67 | remove_from_list op |
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68 | |||
69 | mov eax, [op+block_size] |
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70 | calc_index eax |
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71 | cmp [mem_block_list+eax*4], op |
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72 | jne @f |
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73 | mov [mem_block_list+eax*4], edx |
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74 | @@: |
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75 | cmp [mem_block_list+eax*4], 0 |
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76 | jne @f |
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77 | btr [mem_block_mask], eax |
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78 | @@: |
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79 | } |
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80 | |||
81 | macro remove_from_used op |
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82 | { |
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357 | serge | 83 | mov edx, [op+list_fd] |
84 | mov ecx, [op+list_bk] |
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85 | mov [edx+list_bk], ecx |
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86 | mov [ecx+list_fd], edx |
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87 | mov [op+list_fd], 0 |
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88 | mov [op+list_bk], 0 |
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164 | serge | 89 | } |
90 | |||
91 | align 4 |
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839 | serge | 92 | init_kernel_heap: |
164 | serge | 93 | |
94 | mov ecx, 64/4 |
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95 | mov edi, mem_block_list |
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96 | xor eax, eax |
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97 | cld |
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98 | rep stosd |
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99 | |||
100 | mov ecx, 512/4 |
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101 | mov edi, mem_block_map |
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102 | not eax |
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103 | rep stosd |
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104 | |||
839 | serge | 105 | stdcall alloc_pages, dword 32 |
106 | add eax, OS_BASE |
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107 | |||
164 | serge | 108 | mov [mem_block_start], mem_block_map |
109 | mov [mem_block_end], mem_block_map+512 |
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839 | serge | 110 | mov [mem_block_arr], eax |
164 | serge | 111 | |
839 | serge | 112 | mov ebx, mem_used.fd-MEM_LIST_OFFSET |
113 | mov [mem_used.fd], ebx |
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114 | mov [mem_used.bk], ebx |
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357 | serge | 115 | |
839 | serge | 116 | xor edx, edx |
164 | serge | 117 | |
839 | serge | 118 | mov [eax+block_next], edx |
119 | mov [eax+block_prev], edx |
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120 | mov [eax+list_fd], edx |
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121 | mov [eax+list_bk], edx |
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122 | mov [eax+block_base], HEAP_BASE |
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123 | mov [eax+block_size], page_tabs-HEAP_BASE |
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124 | mov [eax+block_flags], FREE_BLOCK |
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164 | serge | 125 | |
839 | serge | 126 | mov [heap_size], page_tabs-HEAP_BASE |
127 | mov [heap_free], page_tabs-HEAP_BASE |
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164 | serge | 128 | |
839 | serge | 129 | mov [mem_block_mask], edx |
164 | serge | 130 | mov [mem_block_mask+4],0x80000000 |
131 | |||
839 | serge | 132 | mov [mem_block_list+63*4], eax |
133 | mov byte [mem_block_map], 0xFE |
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279 | serge | 134 | and [heap_mutex], 0 |
839 | serge | 135 | mov [heap_blocks], 4096 |
136 | mov [free_blocks], 4096 |
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164 | serge | 137 | ret |
138 | |||
369 | serge | 139 | ; param |
140 | ; eax= required size |
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141 | ; |
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142 | ; retval |
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143 | ; edi= memory block descriptor |
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144 | ; ebx= descriptor index |
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145 | |||
164 | serge | 146 | align 4 |
819 | serge | 147 | get_small_block: |
164 | serge | 148 | mov ecx, eax |
369 | serge | 149 | shr ecx, 12 |
150 | dec ecx |
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151 | cmp ecx, 63 |
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152 | jle .get_index |
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153 | mov ecx, 63 |
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154 | .get_index: |
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155 | lea esi, [mem_block_mask] |
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164 | serge | 156 | xor ebx, ebx |
369 | serge | 157 | or edx, -1 |
164 | serge | 158 | |
159 | cmp ecx, 32 |
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160 | jb .bit_test |
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161 | |||
162 | sub ecx, 32 |
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163 | add ebx, 32 |
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164 | add esi, 4 |
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165 | .bit_test: |
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166 | shl edx, cl |
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369 | serge | 167 | and edx, [esi] |
168 | .find: |
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169 | bsf edi, edx |
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164 | serge | 170 | jz .high_mask |
369 | serge | 171 | add ebx, edi |
172 | mov edi, [mem_block_list+ebx*4] |
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173 | .check_size: |
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174 | cmp eax, [edi+block_size] |
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175 | ja .next |
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164 | serge | 176 | ret |
177 | |||
178 | .high_mask: |
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179 | add esi, 4 |
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369 | serge | 180 | cmp esi, mem_block_mask+8 |
181 | jae .err |
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164 | serge | 182 | add ebx, 32 |
369 | serge | 183 | mov edx, [esi] |
184 | jmp .find |
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185 | .next: |
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186 | mov edi, [edi+list_fd] |
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187 | test edi, edi |
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188 | jnz .check_size |
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189 | .err: |
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190 | xor edi, edi |
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164 | serge | 191 | ret |
837 | serge | 192 | ; param |
193 | ; eax= required size |
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194 | ; |
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195 | ; retval |
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196 | ; edi= memory block descriptor |
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197 | ; ebx= descriptor index |
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198 | align 4 |
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199 | get_large_block: |
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200 | mov edx, -1 |
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201 | mov ecx, eax |
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202 | shr ecx, 22 |
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203 | dec ecx |
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204 | cmp ecx, 31 |
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205 | jle .get_index |
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206 | mov ecx, 31 |
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207 | .get_index: |
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208 | shl edx, cl |
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209 | and edx, [large_block_mask] |
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210 | .find: |
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211 | bsf edi, edx |
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212 | mov ebx, edi |
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213 | mov edi, [large_block_list+edi*4] |
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214 | .check_size: |
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215 | cmp eax, [edi+block_size] |
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216 | ja .next |
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217 | ret |
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218 | .next: |
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219 | mov edi, [edi+list_fd] |
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220 | test edi, edi |
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221 | jnz .check_size |
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222 | .fail: |
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223 | xor edi, edi |
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224 | ret |
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164 | serge | 225 | |
226 | align 4 |
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819 | serge | 227 | alloc_mem_block: |
164 | serge | 228 | |
229 | mov ebx, [mem_block_start] |
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230 | mov ecx, [mem_block_end] |
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231 | .l1: |
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232 | bsf eax,[ebx]; |
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233 | jnz found |
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234 | add ebx,4 |
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235 | cmp ebx, ecx |
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236 | jb .l1 |
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237 | xor eax,eax |
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238 | ret |
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239 | |||
240 | found: |
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241 | btr [ebx], eax |
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242 | mov [mem_block_start],ebx |
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243 | sub ebx, mem_block_map |
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254 | serge | 244 | lea eax,[eax+ebx*8] |
164 | serge | 245 | shl eax, 5 |
246 | add eax, [mem_block_arr] |
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170 | serge | 247 | dec [free_blocks] |
164 | serge | 248 | ret |
819 | serge | 249 | align 4 |
250 | free_mem_block: |
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357 | serge | 251 | mov dword [eax], 0 |
252 | mov dword [eax+4], 0 |
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253 | mov dword [eax+8], 0 |
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254 | mov dword [eax+12], 0 |
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255 | mov dword [eax+16], 0 |
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256 | ; mov dword [eax+20], 0 |
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257 | mov dword [eax+24], 0 |
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258 | mov dword [eax+28], 0 |
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259 | |||
164 | serge | 260 | sub eax, [mem_block_arr] |
261 | shr eax, 5 |
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262 | |||
263 | mov ebx, mem_block_map |
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264 | bts [ebx], eax |
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170 | serge | 265 | inc [free_blocks] |
164 | serge | 266 | shr eax, 3 |
267 | and eax, not 3 |
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268 | add eax, ebx |
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269 | cmp [mem_block_start], eax |
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270 | ja @f |
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271 | ret |
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272 | @@: |
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273 | mov [mem_block_start], eax |
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274 | ret |
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275 | .err: |
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276 | xor eax, eax |
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277 | ret |
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278 | |||
279 | align 4 |
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280 | proc alloc_kernel_space stdcall, size:dword |
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281 | local block_ind:DWORD |
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282 | |||
660 | serge | 283 | push ebx |
284 | push esi |
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285 | push edi |
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286 | |||
164 | serge | 287 | mov eax, [size] |
206 | serge | 288 | add eax, 4095 |
289 | and eax, not 4095 |
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164 | serge | 290 | mov [size], eax |
279 | serge | 291 | |
292 | mov ebx, heap_mutex |
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293 | call wait_mutex ;ebx |
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294 | |||
170 | serge | 295 | cmp eax, [heap_free] |
296 | ja .error |
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164 | serge | 297 | |
819 | serge | 298 | call get_small_block ; eax |
369 | serge | 299 | test edi, edi |
164 | serge | 300 | jz .error |
301 | |||
302 | cmp [edi+block_flags], FREE_BLOCK |
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303 | jne .error |
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304 | |||
305 | mov [block_ind], ebx ;index of allocated block |
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306 | |||
307 | mov eax, [edi+block_size] |
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308 | cmp eax, [size] |
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309 | je .m_eq_size |
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310 | |||
311 | call alloc_mem_block |
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839 | serge | 312 | test eax, eax |
164 | serge | 313 | jz .error |
314 | |||
315 | mov esi, eax ;esi - splitted block |
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316 | |||
317 | mov [esi+block_next], edi |
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318 | mov eax, [edi+block_prev] |
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319 | mov [esi+block_prev], eax |
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320 | mov [edi+block_prev], esi |
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357 | serge | 321 | mov [esi+list_fd], 0 |
322 | mov [esi+list_bk], 0 |
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839 | serge | 323 | test eax, eax |
164 | serge | 324 | jz @f |
325 | mov [eax+block_next], esi |
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326 | @@: |
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327 | mov ebx, [edi+block_base] |
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328 | mov [esi+block_base], ebx |
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329 | mov edx, [size] |
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330 | mov [esi+block_size], edx |
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331 | add [edi+block_base], edx |
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332 | sub [edi+block_size], edx |
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333 | |||
334 | mov eax, [edi+block_size] |
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335 | shr eax, 12 |
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336 | sub eax, 1 |
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337 | cmp eax, 63 |
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338 | jna @f |
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339 | mov eax, 63 |
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340 | @@: |
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341 | cmp eax, [block_ind] |
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342 | je .m_eq_ind |
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343 | |||
192 | serge | 344 | remove_from_list edi |
164 | serge | 345 | |
346 | mov ecx, [block_ind] |
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211 | serge | 347 | mov [mem_block_list+ecx*4], edx |
164 | serge | 348 | |
211 | serge | 349 | test edx, edx |
164 | serge | 350 | jnz @f |
351 | btr [mem_block_mask], ecx |
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352 | @@: |
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353 | mov edx, [mem_block_list+eax*4] |
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357 | serge | 354 | mov [edi+list_fd], edx |
164 | serge | 355 | test edx, edx |
356 | jz @f |
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357 | serge | 357 | mov [edx+list_bk], edi |
164 | serge | 358 | @@: |
359 | mov [mem_block_list+eax*4], edi |
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360 | bts [mem_block_mask], eax |
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361 | .m_eq_ind: |
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357 | serge | 362 | mov ecx, mem_used.fd-MEM_LIST_OFFSET |
363 | mov edx, [ecx+list_fd] |
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364 | mov [esi+list_fd], edx |
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365 | mov [esi+list_bk], ecx |
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366 | mov [ecx+list_fd], esi |
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367 | mov [edx+list_bk], esi |
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368 | |||
164 | serge | 369 | mov [esi+block_flags], USED_BLOCK |
370 | mov eax, [esi+block_base] |
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170 | serge | 371 | mov ebx, [size] |
372 | sub [heap_free], ebx |
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279 | serge | 373 | and [heap_mutex], 0 |
660 | serge | 374 | pop edi |
375 | pop esi |
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376 | pop ebx |
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164 | serge | 377 | ret |
378 | .m_eq_size: |
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379 | remove_from_list edi |
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192 | serge | 380 | mov [mem_block_list+ebx*4], edx |
164 | serge | 381 | and edx, edx |
382 | jnz @f |
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192 | serge | 383 | btr [mem_block_mask], ebx |
164 | serge | 384 | @@: |
357 | serge | 385 | mov ecx, mem_used.fd-MEM_LIST_OFFSET |
386 | mov edx, [ecx+list_fd] |
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387 | mov [edi+list_fd], edx |
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388 | mov [edi+list_bk], ecx |
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389 | mov [ecx+list_fd], edi |
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390 | mov [edx+list_bk], edi |
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391 | |||
164 | serge | 392 | mov [edi+block_flags], USED_BLOCK |
393 | mov eax, [edi+block_base] |
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170 | serge | 394 | mov ebx, [size] |
395 | sub [heap_free], ebx |
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279 | serge | 396 | and [heap_mutex], 0 |
660 | serge | 397 | pop edi |
398 | pop esi |
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399 | pop ebx |
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164 | serge | 400 | ret |
401 | .error: |
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402 | xor eax, eax |
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279 | serge | 403 | mov [heap_mutex], eax |
660 | serge | 404 | pop edi |
405 | pop esi |
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406 | pop ebx |
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164 | serge | 407 | ret |
408 | endp |
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409 | |||
410 | align 4 |
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321 | diamond | 411 | proc free_kernel_space stdcall uses ebx ecx edx esi edi, base:dword |
660 | serge | 412 | push ebx |
413 | push esi |
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414 | push edi |
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279 | serge | 415 | mov ebx, heap_mutex |
416 | call wait_mutex ;ebx |
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417 | |||
164 | serge | 418 | mov eax, [base] |
357 | serge | 419 | mov esi, [mem_used.fd] |
164 | serge | 420 | @@: |
357 | serge | 421 | cmp esi, mem_used.fd-MEM_LIST_OFFSET |
422 | je .fail |
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164 | serge | 423 | |
424 | cmp [esi+block_base], eax |
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425 | je .found |
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357 | serge | 426 | mov esi, [esi+list_fd] |
164 | serge | 427 | jmp @b |
428 | .found: |
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429 | cmp [esi+block_flags], USED_BLOCK |
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430 | jne .fail |
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431 | |||
170 | serge | 432 | mov eax, [esi+block_size] |
433 | add [heap_free], eax |
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434 | |||
164 | serge | 435 | mov edi, [esi+block_next] |
436 | test edi, edi |
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437 | jz .prev |
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438 | |||
439 | cmp [edi+block_flags], FREE_BLOCK |
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440 | jne .prev |
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441 | |||
442 | remove_from_free edi |
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443 | |||
444 | mov edx, [edi+block_next] |
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445 | mov [esi+block_next], edx |
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446 | test edx, edx |
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447 | jz @f |
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448 | |||
449 | mov [edx+block_prev], esi |
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450 | @@: |
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451 | mov ecx, [edi+block_size] |
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452 | add [esi+block_size], ecx |
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453 | |||
454 | mov eax, edi |
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455 | call free_mem_block |
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456 | .prev: |
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457 | mov edi, [esi+block_prev] |
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458 | test edi, edi |
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459 | jz .insert |
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460 | |||
461 | cmp [edi+block_flags], FREE_BLOCK |
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462 | jne .insert |
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463 | |||
464 | remove_from_used esi |
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465 | |||
466 | mov edx, [esi+block_next] |
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467 | mov [edi+block_next], edx |
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468 | test edx, edx |
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469 | jz @f |
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470 | mov [edx+block_prev], edi |
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471 | @@: |
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472 | mov eax, esi |
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473 | call free_mem_block |
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474 | |||
475 | mov ecx, [edi+block_size] |
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476 | mov eax, [esi+block_size] |
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477 | add eax, ecx |
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478 | mov [edi+block_size], eax |
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479 | |||
480 | calc_index eax |
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481 | calc_index ecx |
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482 | cmp eax, ecx |
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483 | je .m_eq |
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484 | |||
485 | push ecx |
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486 | remove_from_list edi |
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487 | pop ecx |
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488 | |||
489 | cmp [mem_block_list+ecx*4], edi |
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490 | jne @f |
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491 | mov [mem_block_list+ecx*4], edx |
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492 | @@: |
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493 | cmp [mem_block_list+ecx*4], 0 |
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494 | jne @f |
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495 | btr [mem_block_mask], ecx |
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496 | @@: |
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497 | mov esi, [mem_block_list+eax*4] |
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498 | mov [mem_block_list+eax*4], edi |
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357 | serge | 499 | mov [edi+list_fd], esi |
164 | serge | 500 | test esi, esi |
501 | jz @f |
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357 | serge | 502 | mov [esi+list_bk], edi |
164 | serge | 503 | @@: |
504 | bts [mem_block_mask], eax |
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505 | .m_eq: |
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506 | xor eax, eax |
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279 | serge | 507 | mov [heap_mutex], eax |
321 | diamond | 508 | dec eax |
660 | serge | 509 | pop edi |
510 | pop esi |
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511 | pop ebx |
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164 | serge | 512 | ret |
513 | .insert: |
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514 | remove_from_used esi |
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515 | |||
516 | mov eax, [esi+block_size] |
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517 | calc_index eax |
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518 | |||
519 | mov edi, [mem_block_list+eax*4] |
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520 | mov [mem_block_list+eax*4], esi |
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357 | serge | 521 | mov [esi+list_fd], edi |
164 | serge | 522 | test edi, edi |
523 | jz @f |
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357 | serge | 524 | mov [edi+list_bk], esi |
164 | serge | 525 | @@: |
526 | bts [mem_block_mask], eax |
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527 | mov [esi+block_flags],FREE_BLOCK |
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528 | xor eax, eax |
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279 | serge | 529 | mov [heap_mutex], eax |
321 | diamond | 530 | dec eax |
660 | serge | 531 | pop edi |
532 | pop esi |
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533 | pop ebx |
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164 | serge | 534 | ret |
535 | .fail: |
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536 | xor eax, eax |
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279 | serge | 537 | mov [heap_mutex], eax |
660 | serge | 538 | pop edi |
539 | pop esi |
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540 | pop ebx |
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164 | serge | 541 | ret |
542 | endp |
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543 | |||
544 | align 4 |
||
545 | proc kernel_alloc stdcall, size:dword |
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546 | locals |
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547 | lin_addr dd ? |
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548 | pages_count dd ? |
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549 | endl |
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550 | |||
662 | serge | 551 | push ebx |
552 | push edi |
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553 | |||
164 | serge | 554 | mov eax, [size] |
206 | serge | 555 | add eax, 4095 |
556 | and eax, not 4095; |
||
164 | serge | 557 | mov [size], eax |
558 | and eax, eax |
||
357 | serge | 559 | jz .err |
164 | serge | 560 | mov ebx, eax |
561 | shr ebx, 12 |
||
562 | mov [pages_count], ebx |
||
563 | |||
564 | stdcall alloc_kernel_space, eax |
||
357 | serge | 565 | test eax, eax |
566 | jz .err |
||
164 | serge | 567 | mov [lin_addr], eax |
568 | |||
569 | mov ecx, [pages_count] |
||
570 | mov edx, eax |
||
571 | mov ebx, ecx |
||
572 | |||
573 | shr ecx, 3 |
||
574 | jz .next |
||
575 | |||
576 | and ebx, not 7 |
||
577 | push ebx |
||
578 | stdcall alloc_pages, ebx |
||
579 | pop ecx ; yes ecx!!! |
||
580 | and eax, eax |
||
357 | serge | 581 | jz .err |
164 | serge | 582 | |
583 | mov edi, eax |
||
584 | mov edx, [lin_addr] |
||
585 | @@: |
||
586 | stdcall map_page,edx,edi,dword PG_SW |
||
587 | add edx, 0x1000 |
||
588 | add edi, 0x1000 |
||
589 | dec ecx |
||
590 | jnz @B |
||
591 | .next: |
||
592 | mov ecx, [pages_count] |
||
593 | and ecx, 7 |
||
594 | jz .end |
||
357 | serge | 595 | @@: |
596 | push ecx |
||
164 | serge | 597 | call alloc_page |
598 | pop ecx |
||
599 | test eax, eax |
||
357 | serge | 600 | jz .err |
164 | serge | 601 | |
602 | stdcall map_page,edx,eax,dword PG_SW |
||
603 | add edx, 0x1000 |
||
604 | dec ecx |
||
605 | jnz @B |
||
606 | .end: |
||
607 | mov eax, [lin_addr] |
||
662 | serge | 608 | pop edi |
609 | pop ebx |
||
164 | serge | 610 | ret |
357 | serge | 611 | .err: |
164 | serge | 612 | xor eax, eax |
662 | serge | 613 | pop edi |
614 | pop ebx |
||
164 | serge | 615 | ret |
616 | endp |
||
617 | |||
618 | align 4 |
||
619 | proc kernel_free stdcall, base:dword |
||
321 | diamond | 620 | push ebx esi |
164 | serge | 621 | |
279 | serge | 622 | mov ebx, heap_mutex |
623 | call wait_mutex ;ebx |
||
624 | |||
164 | serge | 625 | mov eax, [base] |
357 | serge | 626 | mov esi, [mem_used.fd] |
164 | serge | 627 | @@: |
357 | serge | 628 | cmp esi, mem_used.fd-MEM_LIST_OFFSET |
629 | je .fail |
||
164 | serge | 630 | |
631 | cmp [esi+block_base], eax |
||
632 | je .found |
||
357 | serge | 633 | mov esi, [esi+list_fd] |
164 | serge | 634 | jmp @b |
635 | .found: |
||
636 | cmp [esi+block_flags], USED_BLOCK |
||
637 | jne .fail |
||
638 | |||
279 | serge | 639 | and [heap_mutex], 0 |
640 | |||
321 | diamond | 641 | push ecx |
164 | serge | 642 | mov ecx, [esi+block_size]; |
281 | serge | 643 | shr ecx, 12 |
279 | serge | 644 | call release_pages ;eax, ecx |
321 | diamond | 645 | pop ecx |
164 | serge | 646 | stdcall free_kernel_space, [base] |
321 | diamond | 647 | pop esi ebx |
279 | serge | 648 | ret |
164 | serge | 649 | .fail: |
279 | serge | 650 | and [heap_mutex], 0 |
321 | diamond | 651 | pop esi ebx |
164 | serge | 652 | ret |
653 | endp |
||
654 | |||
837 | serge | 655 | |
656 | align 4 |
||
657 | proc alloc_large stdcall, size:dword |
||
658 | local block_ind:DWORD |
||
659 | |||
660 | push ebx |
||
661 | push esi |
||
662 | push edi |
||
663 | |||
664 | mov eax, [size] |
||
665 | add eax, 0x3FFFFF |
||
666 | and eax, not 0x3FFFFF |
||
667 | mov [size], eax |
||
668 | |||
669 | ; mov ebx, heap_mutex |
||
670 | ; call wait_mutex ;ebx |
||
671 | |||
672 | ; cmp eax, [heap_free] |
||
673 | ; ja .error |
||
674 | |||
675 | call get_large_block ; eax |
||
676 | test edi, edi |
||
677 | jz .error |
||
678 | |||
679 | cmp [edi+block_flags], FREE_BLOCK |
||
680 | jne .error |
||
681 | |||
682 | mov [block_ind], ebx ;index of allocated block |
||
683 | |||
684 | mov eax, [edi+block_size] |
||
685 | cmp eax, [size] |
||
686 | je .m_eq_size |
||
687 | |||
688 | call alloc_mem_block |
||
689 | and eax, eax |
||
690 | jz .error |
||
691 | |||
692 | mov esi, eax ;esi - splitted block |
||
693 | |||
694 | mov [esi+block_next], edi |
||
695 | mov eax, [edi+block_prev] |
||
696 | mov [esi+block_prev], eax |
||
697 | mov [edi+block_prev], esi |
||
698 | mov [esi+list_fd], 0 |
||
699 | mov [esi+list_bk], 0 |
||
700 | test eax, eax |
||
701 | jz @f |
||
702 | mov [eax+block_next], esi |
||
703 | @@: |
||
704 | mov ebx, [edi+block_base] |
||
705 | mov [esi+block_base], ebx |
||
706 | mov edx, [size] |
||
707 | mov [esi+block_size], edx |
||
708 | add [edi+block_base], edx |
||
709 | sub [edi+block_size], edx |
||
710 | |||
711 | mov eax, [edi+block_size] |
||
712 | shr eax, 22 |
||
713 | dec eax |
||
714 | cmp eax, 31 |
||
715 | jna @f |
||
716 | mov eax, 31 |
||
717 | @@: |
||
718 | cmp eax, [block_ind] |
||
719 | je .m_eq_ind |
||
720 | |||
721 | remove_from_list edi |
||
722 | |||
723 | mov ecx, [block_ind] |
||
724 | mov [large_block_list+ecx*4], edx |
||
725 | |||
726 | test edx, edx |
||
727 | jnz @f |
||
728 | btr [large_block_mask], ecx |
||
729 | @@: |
||
730 | mov edx, [large_block_list+eax*4] |
||
731 | mov [edi+list_fd], edx |
||
732 | test edx, edx |
||
733 | jz @f |
||
734 | mov [edx+list_bk], edi |
||
735 | @@: |
||
736 | mov [large_block_list+eax*4], edi |
||
737 | bts [large_block_mask], eax |
||
738 | .m_eq_ind: |
||
739 | mov ecx, mem_used.fd-MEM_LIST_OFFSET |
||
740 | mov edx, [ecx+list_fd] |
||
741 | mov [esi+list_fd], edx |
||
742 | mov [esi+list_bk], ecx |
||
743 | mov [ecx+list_fd], esi |
||
744 | mov [edx+list_bk], esi |
||
745 | |||
746 | mov [esi+block_flags], USED_BLOCK |
||
747 | mov eax, [esi+block_base] |
||
748 | mov ebx, [size] |
||
749 | sub [heap_free], ebx |
||
750 | and [heap_mutex], 0 |
||
751 | pop edi |
||
752 | pop esi |
||
753 | pop ebx |
||
754 | ret |
||
755 | .m_eq_size: |
||
756 | remove_from_list edi |
||
757 | mov [large_block_list+ebx*4], edx |
||
758 | and edx, edx |
||
759 | jnz @f |
||
760 | btr [large_block_mask], ebx |
||
761 | @@: |
||
762 | mov ecx, mem_used.fd-MEM_LIST_OFFSET |
||
763 | mov edx, [ecx+list_fd] |
||
764 | mov [edi+list_fd], edx |
||
765 | mov [edi+list_bk], ecx |
||
766 | mov [ecx+list_fd], edi |
||
767 | mov [edx+list_bk], edi |
||
768 | |||
769 | mov [edi+block_flags], USED_BLOCK |
||
770 | mov eax, [edi+block_base] |
||
771 | mov ebx, [size] |
||
772 | sub [heap_free], ebx |
||
773 | and [heap_mutex], 0 |
||
774 | pop edi |
||
775 | pop esi |
||
776 | pop ebx |
||
777 | ret |
||
778 | .error: |
||
779 | xor eax, eax |
||
780 | mov [heap_mutex], eax |
||
781 | pop edi |
||
782 | pop esi |
||
783 | pop ebx |
||
784 | ret |
||
785 | endp |
||
786 | |||
164 | serge | 787 | restore block_next |
788 | restore block_prev |
||
789 | restore block_list |
||
790 | restore block_base |
||
791 | restore block_size |
||
792 | restore block_flags |
||
793 | |||
794 | ;;;;;;;;;;;;;; USER ;;;;;;;;;;;;;;;;; |
||
795 | |||
188 | serge | 796 | HEAP_TOP equ 0x5FC00000 |
797 | |||
164 | serge | 798 | align 4 |
188 | serge | 799 | proc init_heap |
164 | serge | 800 | |
465 | serge | 801 | mov ebx,[current_slot] |
802 | mov eax, [ebx+APPDATA.heap_top] |
||
172 | serge | 803 | test eax, eax |
804 | jz @F |
||
465 | serge | 805 | sub eax,[ebx+APPDATA.heap_base] |
172 | serge | 806 | sub eax, 4096 |
807 | ret |
||
808 | @@: |
||
465 | serge | 809 | mov esi, [ebx+APPDATA.mem_size] |
188 | serge | 810 | add esi, 4095 |
811 | and esi, not 4095 |
||
465 | serge | 812 | mov [ebx+APPDATA.mem_size], esi |
188 | serge | 813 | mov eax, HEAP_TOP |
465 | serge | 814 | mov [ebx+APPDATA.heap_base], esi |
815 | mov [ebx+APPDATA.heap_top], eax |
||
164 | serge | 816 | |
188 | serge | 817 | sub eax, esi |
818 | shr esi, 10 |
||
819 | mov ecx, eax |
||
164 | serge | 820 | sub eax, 4096 |
188 | serge | 821 | or ecx, FREE_BLOCK |
365 | serge | 822 | mov [page_tabs+esi], ecx |
164 | serge | 823 | ret |
824 | endp |
||
825 | |||
826 | align 4 |
||
827 | proc user_alloc stdcall, alloc_size:dword |
||
828 | |||
662 | serge | 829 | push ebx |
830 | push esi |
||
831 | push edi |
||
832 | |||
164 | serge | 833 | mov ecx, [alloc_size] |
834 | add ecx, (4095+4096) |
||
835 | and ecx, not 4095 |
||
836 | |||
465 | serge | 837 | mov ebx, [current_slot] |
838 | mov esi, dword [ebx+APPDATA.heap_base] ; heap_base |
||
839 | mov edi, dword [ebx+APPDATA.heap_top] ; heap_top |
||
164 | serge | 840 | l_0: |
841 | cmp esi, edi |
||
842 | jae m_exit |
||
843 | |||
844 | mov ebx, esi |
||
845 | shr ebx, 12 |
||
365 | serge | 846 | mov eax, [page_tabs+ebx*4] |
620 | diamond | 847 | test al, FREE_BLOCK |
164 | serge | 848 | jz test_used |
849 | and eax, 0xFFFFF000 |
||
850 | cmp eax, ecx ;alloc_size |
||
851 | jb m_next |
||
270 | diamond | 852 | jz @f |
164 | serge | 853 | |
620 | diamond | 854 | lea edx, [esi+ecx] |
855 | sub eax, ecx |
||
856 | or al, FREE_BLOCK |
||
164 | serge | 857 | shr edx, 12 |
365 | serge | 858 | mov [page_tabs+edx*4], eax |
294 | diamond | 859 | @@: |
164 | serge | 860 | or ecx, USED_BLOCK |
365 | serge | 861 | mov [page_tabs+ebx*4], ecx |
164 | serge | 862 | shr ecx, 12 |
620 | diamond | 863 | inc ebx |
164 | serge | 864 | dec ecx |
620 | diamond | 865 | jz .no |
164 | serge | 866 | @@: |
365 | serge | 867 | mov dword [page_tabs+ebx*4], 2 |
164 | serge | 868 | inc ebx |
869 | dec ecx |
||
870 | jnz @B |
||
620 | diamond | 871 | .no: |
164 | serge | 872 | |
465 | serge | 873 | mov edx, [current_slot] |
874 | mov ebx, [alloc_size] |
||
875 | add ebx, 0xFFF |
||
876 | and ebx, not 0xFFF |
||
877 | add ebx, [edx+APPDATA.mem_size] |
||
878 | call update_mem_size |
||
294 | diamond | 879 | |
620 | diamond | 880 | lea eax, [esi+4096] |
662 | serge | 881 | |
882 | pop edi |
||
883 | pop esi |
||
884 | pop ebx |
||
164 | serge | 885 | ret |
886 | test_used: |
||
620 | diamond | 887 | test al, USED_BLOCK |
164 | serge | 888 | jz m_exit |
889 | |||
890 | and eax, 0xFFFFF000 |
||
620 | diamond | 891 | m_next: |
164 | serge | 892 | add esi, eax |
893 | jmp l_0 |
||
894 | m_exit: |
||
895 | xor eax, eax |
||
662 | serge | 896 | pop edi |
897 | pop esi |
||
898 | pop ebx |
||
164 | serge | 899 | ret |
900 | endp |
||
901 | |||
902 | align 4 |
||
903 | proc user_free stdcall, base:dword |
||
904 | |||
662 | serge | 905 | push esi |
906 | |||
164 | serge | 907 | mov esi, [base] |
908 | test esi, esi |
||
909 | jz .exit |
||
910 | |||
662 | serge | 911 | push ebx |
912 | |||
294 | diamond | 913 | xor ebx, ebx |
164 | serge | 914 | shr esi, 12 |
620 | diamond | 915 | mov eax, [page_tabs+(esi-1)*4] |
546 | diamond | 916 | test al, USED_BLOCK |
620 | diamond | 917 | jz .cantfree |
546 | diamond | 918 | test al, DONT_FREE_BLOCK |
919 | jnz .cantfree |
||
164 | serge | 920 | |
921 | and eax, not 4095 |
||
922 | mov ecx, eax |
||
620 | diamond | 923 | or al, FREE_BLOCK |
924 | mov [page_tabs+(esi-1)*4], eax |
||
164 | serge | 925 | sub ecx, 4096 |
620 | diamond | 926 | mov ebx, ecx |
164 | serge | 927 | shr ecx, 12 |
620 | diamond | 928 | jz .released |
164 | serge | 929 | .release: |
188 | serge | 930 | xor eax, eax |
365 | serge | 931 | xchg eax, [page_tabs+esi*4] |
620 | diamond | 932 | test al, 1 |
188 | serge | 933 | jz @F |
164 | serge | 934 | call free_page |
448 | diamond | 935 | mov eax, esi |
936 | shl eax, 12 |
||
937 | invlpg [eax] |
||
188 | serge | 938 | @@: |
164 | serge | 939 | inc esi |
940 | dec ecx |
||
941 | jnz .release |
||
620 | diamond | 942 | .released: |
662 | serge | 943 | push edi |
944 | |||
465 | serge | 945 | mov edx, [current_slot] |
946 | mov esi, dword [edx+APPDATA.heap_base] |
||
947 | mov edi, dword [edx+APPDATA.heap_top] |
||
948 | sub ebx, [edx+APPDATA.mem_size] |
||
294 | diamond | 949 | neg ebx |
950 | call update_mem_size |
||
448 | diamond | 951 | call user_normalize |
662 | serge | 952 | pop edi |
953 | pop ebx |
||
954 | pop esi |
||
448 | diamond | 955 | ret |
956 | .exit: |
||
957 | xor eax, eax |
||
958 | inc eax |
||
662 | serge | 959 | pop esi |
448 | diamond | 960 | ret |
546 | diamond | 961 | .cantfree: |
962 | xor eax, eax |
||
662 | serge | 963 | pop ebx |
964 | pop esi |
||
546 | diamond | 965 | ret |
448 | diamond | 966 | endp |
967 | |||
968 | user_normalize: |
||
969 | ; in: esi=heap_base, edi=heap_top |
||
970 | ; out: eax=0 <=> OK |
||
971 | ; destroys: ebx,edx,esi,edi |
||
164 | serge | 972 | shr esi, 12 |
973 | shr edi, 12 |
||
974 | @@: |
||
365 | serge | 975 | mov eax, [page_tabs+esi*4] |
620 | diamond | 976 | test al, USED_BLOCK |
164 | serge | 977 | jz .test_free |
978 | shr eax, 12 |
||
979 | add esi, eax |
||
980 | jmp @B |
||
981 | .test_free: |
||
620 | diamond | 982 | test al, FREE_BLOCK |
164 | serge | 983 | jz .err |
984 | mov edx, eax |
||
985 | shr edx, 12 |
||
986 | add edx, esi |
||
987 | cmp edx, edi |
||
988 | jae .exit |
||
989 | |||
365 | serge | 990 | mov ebx, [page_tabs+edx*4] |
620 | diamond | 991 | test bl, USED_BLOCK |
164 | serge | 992 | jz .next_free |
993 | |||
994 | shr ebx, 12 |
||
995 | add edx, ebx |
||
996 | mov esi, edx |
||
997 | jmp @B |
||
998 | .next_free: |
||
620 | diamond | 999 | test bl, FREE_BLOCK |
164 | serge | 1000 | jz .err |
365 | serge | 1001 | and dword [page_tabs+edx*4], 0 |
164 | serge | 1002 | add eax, ebx |
1003 | and eax, not 4095 |
||
1004 | or eax, FREE_BLOCK |
||
365 | serge | 1005 | mov [page_tabs+esi*4], eax |
164 | serge | 1006 | jmp @B |
1007 | .exit: |
||
1008 | xor eax, eax |
||
1009 | inc eax |
||
1010 | ret |
||
1011 | .err: |
||
1012 | xor eax, eax |
||
1013 | ret |
||
1014 | |||
448 | diamond | 1015 | user_realloc: |
1016 | ; in: eax = pointer, ebx = new size |
||
1017 | ; out: eax = new pointer or NULL |
||
1018 | test eax, eax |
||
1019 | jnz @f |
||
1020 | ; realloc(NULL,sz) - same as malloc(sz) |
||
1021 | push ebx |
||
1022 | call user_alloc |
||
1023 | ret |
||
1024 | @@: |
||
1025 | push ecx edx |
||
465 | serge | 1026 | lea ecx, [eax - 0x1000] |
448 | diamond | 1027 | shr ecx, 12 |
1028 | mov edx, [page_tabs+ecx*4] |
||
620 | diamond | 1029 | test dl, USED_BLOCK |
448 | diamond | 1030 | jnz @f |
1031 | ; attempt to realloc invalid pointer |
||
1032 | .ret0: |
||
1033 | pop edx ecx |
||
1034 | xor eax, eax |
||
1035 | ret |
||
1036 | @@: |
||
620 | diamond | 1037 | test dl, DONT_FREE_BLOCK |
546 | diamond | 1038 | jnz .ret0 |
448 | diamond | 1039 | add ebx, 0x1FFF |
1040 | shr edx, 12 |
||
1041 | shr ebx, 12 |
||
1042 | ; edx = allocated size, ebx = new size |
||
1043 | add edx, ecx |
||
1044 | add ebx, ecx |
||
1045 | cmp edx, ebx |
||
1046 | jb .realloc_add |
||
1047 | ; release part of allocated memory |
||
1048 | .loop: |
||
1049 | cmp edx, ebx |
||
1050 | jz .release_done |
||
1051 | dec edx |
||
1052 | xor eax, eax |
||
1053 | xchg eax, [page_tabs+edx*4] |
||
1054 | test al, 1 |
||
1055 | jz .loop |
||
1056 | call free_page |
||
1057 | mov eax, edx |
||
1058 | shl eax, 12 |
||
1059 | invlpg [eax] |
||
1060 | jmp .loop |
||
1061 | .release_done: |
||
1062 | sub ebx, ecx |
||
1063 | cmp ebx, 1 |
||
1064 | jnz .nofreeall |
||
1065 | mov eax, [page_tabs+ecx*4] |
||
1066 | and eax, not 0xFFF |
||
465 | serge | 1067 | mov edx, [current_slot] |
1068 | mov ebx, [APPDATA.mem_size+edx] |
||
448 | diamond | 1069 | sub ebx, eax |
1070 | add ebx, 0x1000 |
||
1071 | or al, FREE_BLOCK |
||
1072 | mov [page_tabs+ecx*4], eax |
||
1073 | push esi edi |
||
465 | serge | 1074 | mov esi, [APPDATA.heap_base+edx] |
1075 | mov edi, [APPDATA.heap_top+edx] |
||
448 | diamond | 1076 | call update_mem_size |
1077 | call user_normalize |
||
1078 | pop edi esi |
||
1079 | jmp .ret0 ; all freed |
||
1080 | .nofreeall: |
||
1081 | sub edx, ecx |
||
1082 | shl ebx, 12 |
||
1083 | or ebx, USED_BLOCK |
||
1084 | xchg [page_tabs+ecx*4], ebx |
||
1085 | shr ebx, 12 |
||
1086 | sub ebx, edx |
||
1087 | push ebx ecx edx |
||
465 | serge | 1088 | mov edx, [current_slot] |
448 | diamond | 1089 | shl ebx, 12 |
465 | serge | 1090 | sub ebx, [APPDATA.mem_size+edx] |
448 | diamond | 1091 | neg ebx |
1092 | call update_mem_size |
||
1093 | pop edx ecx ebx |
||
465 | serge | 1094 | lea eax, [ecx+1] |
448 | diamond | 1095 | shl eax, 12 |
1096 | push eax |
||
823 | diamond | 1097 | add ecx, edx |
1098 | lea edx, [ecx+ebx] |
||
448 | diamond | 1099 | shl ebx, 12 |
1100 | jz .ret |
||
1101 | push esi |
||
465 | serge | 1102 | mov esi, [current_slot] |
1103 | mov esi, [APPDATA.heap_top+esi] |
||
448 | diamond | 1104 | shr esi, 12 |
1105 | @@: |
||
1106 | cmp edx, esi |
||
1107 | jae .merge_done |
||
1108 | mov eax, [page_tabs+edx*4] |
||
1109 | test al, USED_BLOCK |
||
823 | diamond | 1110 | jnz .merge_done |
448 | diamond | 1111 | and dword [page_tabs+edx*4], 0 |
823 | diamond | 1112 | shr eax, 12 |
1113 | add edx, eax |
||
1114 | shl eax, 12 |
||
448 | diamond | 1115 | add ebx, eax |
1116 | jmp @b |
||
1117 | .merge_done: |
||
1118 | pop esi |
||
1119 | or ebx, FREE_BLOCK |
||
1120 | mov [page_tabs+ecx*4], ebx |
||
1121 | .ret: |
||
1122 | pop eax edx ecx |
||
1123 | ret |
||
1124 | .realloc_add: |
||
1125 | ; get some additional memory |
||
465 | serge | 1126 | mov eax, [current_slot] |
1127 | mov eax, [APPDATA.heap_top+eax] |
||
448 | diamond | 1128 | shr eax, 12 |
1129 | cmp edx, eax |
||
1130 | jae .cant_inplace |
||
1131 | mov eax, [page_tabs+edx*4] |
||
620 | diamond | 1132 | test al, FREE_BLOCK |
1133 | jz .cant_inplace |
||
448 | diamond | 1134 | shr eax, 12 |
1135 | add eax, edx |
||
620 | diamond | 1136 | sub eax, ebx |
448 | diamond | 1137 | jb .cant_inplace |
1138 | jz @f |
||
1139 | shl eax, 12 |
||
1140 | or al, FREE_BLOCK |
||
1141 | mov [page_tabs+ebx*4], eax |
||
1142 | @@: |
||
1143 | mov eax, ebx |
||
1144 | sub eax, ecx |
||
1145 | shl eax, 12 |
||
1146 | or al, USED_BLOCK |
||
1147 | mov [page_tabs+ecx*4], eax |
||
465 | serge | 1148 | lea eax, [ecx+1] |
448 | diamond | 1149 | shl eax, 12 |
1150 | push eax |
||
1151 | push edi |
||
1152 | lea edi, [page_tabs+edx*4] |
||
1153 | mov eax, 2 |
||
1154 | sub ebx, edx |
||
1155 | mov ecx, ebx |
||
1156 | cld |
||
1157 | rep stosd |
||
1158 | pop edi |
||
465 | serge | 1159 | mov edx, [current_slot] |
448 | diamond | 1160 | shl ebx, 12 |
465 | serge | 1161 | add ebx, [APPDATA.mem_size+edx] |
448 | diamond | 1162 | call update_mem_size |
1163 | pop eax edx ecx |
||
1164 | ret |
||
1165 | .cant_inplace: |
||
1166 | push esi edi |
||
465 | serge | 1167 | mov eax, [current_slot] |
1168 | mov esi, [APPDATA.heap_base+eax] |
||
1169 | mov edi, [APPDATA.heap_top+eax] |
||
448 | diamond | 1170 | shr esi, 12 |
1171 | shr edi, 12 |
||
1172 | sub ebx, ecx |
||
1173 | .find_place: |
||
1174 | cmp esi, edi |
||
1175 | jae .place_not_found |
||
1176 | mov eax, [page_tabs+esi*4] |
||
1177 | test al, FREE_BLOCK |
||
1178 | jz .next_place |
||
1179 | shr eax, 12 |
||
1180 | cmp eax, ebx |
||
1181 | jae .place_found |
||
1182 | add esi, eax |
||
1183 | jmp .find_place |
||
1184 | .next_place: |
||
1185 | shr eax, 12 |
||
1186 | add esi, eax |
||
1187 | jmp .find_place |
||
1188 | .place_not_found: |
||
1189 | pop edi esi |
||
1190 | jmp .ret0 |
||
1191 | .place_found: |
||
1192 | sub eax, ebx |
||
1193 | jz @f |
||
1194 | push esi |
||
620 | diamond | 1195 | add esi, ebx |
448 | diamond | 1196 | shl eax, 12 |
1197 | or al, FREE_BLOCK |
||
1198 | mov [page_tabs+esi*4], eax |
||
1199 | pop esi |
||
1200 | @@: |
||
1201 | mov eax, ebx |
||
1202 | shl eax, 12 |
||
1203 | or al, USED_BLOCK |
||
1204 | mov [page_tabs+esi*4], eax |
||
1205 | inc esi |
||
1206 | mov eax, esi |
||
1207 | shl eax, 12 |
||
1208 | push eax |
||
1209 | mov eax, [page_tabs+ecx*4] |
||
1210 | and eax, not 0xFFF |
||
1211 | or al, FREE_BLOCK |
||
1212 | sub edx, ecx |
||
1213 | mov [page_tabs+ecx*4], eax |
||
1214 | inc ecx |
||
620 | diamond | 1215 | dec ebx |
1216 | dec edx |
||
1217 | jz .no |
||
448 | diamond | 1218 | @@: |
1219 | xor eax, eax |
||
1220 | xchg eax, [page_tabs+ecx*4] |
||
1221 | mov [page_tabs+esi*4], eax |
||
1222 | mov eax, ecx |
||
1223 | shl eax, 12 |
||
1224 | invlpg [eax] |
||
620 | diamond | 1225 | inc esi |
448 | diamond | 1226 | inc ecx |
1227 | dec ebx |
||
1228 | dec edx |
||
1229 | jnz @b |
||
620 | diamond | 1230 | .no: |
448 | diamond | 1231 | push ebx |
465 | serge | 1232 | mov edx, [current_slot] |
448 | diamond | 1233 | shl ebx, 12 |
465 | serge | 1234 | add ebx, [APPDATA.mem_size+edx] |
448 | diamond | 1235 | call update_mem_size |
1236 | pop ebx |
||
1237 | @@: |
||
1238 | mov dword [page_tabs+esi*4], 2 |
||
1239 | inc esi |
||
1240 | dec ebx |
||
1241 | jnz @b |
||
1242 | pop eax edi esi edx ecx |
||
1243 | ret |
||
1244 | |||
278 | serge | 1245 | if 0 |
164 | serge | 1246 | align 4 |
1247 | proc alloc_dll |
||
1248 | pushf |
||
1249 | cli |
||
1250 | bsf eax, [dll_map] |
||
1251 | jnz .find |
||
1252 | popf |
||
1253 | xor eax, eax |
||
1254 | ret |
||
1255 | .find: |
||
1256 | btr [dll_map], eax |
||
1257 | popf |
||
1258 | shl eax, 5 |
||
1259 | add eax, dll_tab |
||
1260 | ret |
||
1261 | endp |
||
1262 | |||
1263 | align 4 |
||
1264 | proc alloc_service |
||
1265 | pushf |
||
1266 | cli |
||
1267 | bsf eax, [srv_map] |
||
1268 | jnz .find |
||
1269 | popf |
||
1270 | xor eax, eax |
||
1271 | ret |
||
214 | serge | 1272 | .find: |
1273 | btr [srv_map], eax |
||
164 | serge | 1274 | popf |
214 | serge | 1275 | shl eax,0x02 |
1276 | lea eax,[srv_tab+eax+eax*8] ;srv_tab+eax*36 |
||
164 | serge | 1277 | ret |
1278 | endp |
||
278 | serge | 1279 | |
1280 | end if=> |