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Rev | Author | Line No. | Line |
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425 | victor | 1 | $Revision: 425 $ |
357 | serge | 2 | GREEDY_KERNEL equ 0 |
164 | serge | 3 | |
170 | serge | 4 | |
164 | serge | 5 | struc APP_HEADER_00 |
6 | { .banner dq ? |
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7 | .version dd ? ;+8 |
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8 | .start dd ? ;+12 |
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9 | .i_end dd ? ;+16 |
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10 | .mem_size dd ? ;+20 |
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11 | .i_param dd ? ;+24 |
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12 | } |
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13 | |||
14 | struc APP_HEADER_01 |
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15 | { .banner dq ? |
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16 | .version dd ? ;+8 |
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17 | .start dd ? ;+12 |
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18 | .i_end dd ? ;+16 |
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19 | .mem_size dd ? ;+20 |
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20 | .stack_top dd ? ;+24 |
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21 | .i_param dd ? ;+28 |
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22 | .i_icon dd ? ;+32 |
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23 | } |
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24 | |||
237 | serge | 25 | struc TSS |
26 | { |
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27 | ._back rw 2 |
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28 | ._esp0 rd 1 |
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29 | ._ss0 rw 2 |
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30 | ._esp1 rd 1 |
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31 | ._ss1 rw 2 |
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32 | ._esp2 rd 1 |
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33 | ._ss2 rw 2 |
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34 | ._cr3 rd 1 |
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35 | ._eip rd 1 |
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36 | ._eflags rd 1 |
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37 | ._eax rd 1 |
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38 | ._ecx rd 1 |
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39 | ._edx rd 1 |
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40 | ._ebx rd 1 |
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41 | ._esp rd 1 |
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42 | ._ebp rd 1 |
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43 | ._esi rd 1 |
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44 | ._edi rd 1 |
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45 | ._es rw 2 |
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46 | ._cs rw 2 |
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47 | ._ss rw 2 |
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48 | ._ds rw 2 |
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49 | ._fs rw 2 |
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50 | ._gs rw 2 |
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51 | ._ldt rw 2 |
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52 | ._trap rw 1 |
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53 | ._io rw 1 |
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54 | } |
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55 | |||
56 | virtual at 0 |
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57 | TSS TSS |
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58 | end virtual |
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59 | |||
60 | struc APP_PARAMS |
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61 | { .app_cmdline ;0x00 |
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62 | .app_path ;0x04 |
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63 | .app_eip ;0x08 |
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64 | .app_esp ;0x0C |
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65 | .app_mem ;0x10 |
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66 | } |
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67 | |||
68 | macro _clear_ op |
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69 | { mov ecx, op/4 |
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70 | xor eax, eax |
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71 | cld |
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72 | rep stosd |
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73 | } |
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74 | |||
363 | serge | 75 | |
164 | serge | 76 | align 4 |
363 | serge | 77 | proc fs_execute |
78 | |||
79 | ;fn_read:dword, file_size:dword, cluster:dword |
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80 | |||
81 | ; ebx - cmdline |
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82 | ; edx - flags |
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83 | ; ebp - full filename |
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84 | ; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it |
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85 | |||
237 | serge | 86 | locals |
363 | serge | 87 | cmdline rd 64 ;256/4 |
88 | filename rd 256 ;1024/4 |
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89 | flags dd ? |
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90 | |||
237 | serge | 91 | save_cr3 dd ? |
92 | slot dd ? |
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93 | slot_base dd ? |
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94 | file_base dd ? |
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95 | file_size dd ? |
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363 | serge | 96 | ;app header data |
97 | hdr_cmdline dd ? ;0x00 |
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98 | hdr_path dd ? ;0x04 |
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99 | hdr_eip dd ? ;0x08 |
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100 | hdr_esp dd ? ;0x0C |
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101 | hdr_mem dd ? ;0x10 |
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102 | hdr_i_end dd ? ;0x14 |
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237 | serge | 103 | endl |
164 | serge | 104 | |
363 | serge | 105 | pushad |
106 | |||
107 | mov [cmdline], ebx |
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108 | mov [flags], edx |
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109 | |||
110 | ; [ebp] pointer to filename |
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111 | |||
112 | lea eax, [filename] |
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113 | mov dword [eax+1020],0 ;force terminate |
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114 | ;string |
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115 | stdcall k_strncpy, eax, [ebp], 1023 |
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116 | |||
117 | lea eax, [cmdline] |
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118 | mov dword [eax+252], 0 |
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119 | stdcall k_strncpy, eax, [cmdline], 255 |
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120 | |||
121 | lea eax, [filename] |
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122 | stdcall load_file, eax |
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237 | serge | 123 | mov ecx, -ERROR_FILE_NOT_FOUND |
124 | test eax, eax |
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247 | serge | 125 | jz .err_file |
237 | serge | 126 | |
127 | mov [file_base], eax |
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128 | mov [file_size], ebx |
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129 | |||
363 | serge | 130 | lea ebx, [hdr_cmdline] |
237 | serge | 131 | call test_app_header |
132 | mov ecx, -0x1F |
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133 | test eax, eax |
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247 | serge | 134 | jz .err_hdr |
237 | serge | 135 | |
136 | mov esi, new_process_loading |
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137 | call sys_msg_board_str ; write message to message board |
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138 | |||
139 | .wait_lock: |
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140 | cmp [application_table_status],0 |
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141 | je .get_lock |
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142 | call change_task |
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143 | jmp .wait_lock |
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144 | |||
145 | .get_lock: |
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146 | mov eax, 1 |
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147 | xchg eax, [application_table_status] |
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148 | cmp eax, 0 |
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149 | jne .wait_lock |
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150 | |||
363 | serge | 151 | ; pushfd |
152 | ; cli |
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269 | serge | 153 | |
237 | serge | 154 | call set_application_table_status |
155 | |||
156 | call get_new_process_place |
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157 | test eax, eax |
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158 | mov ecx, -0x20 ; too many processes |
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269 | serge | 159 | jz .err |
237 | serge | 160 | |
161 | mov [slot], eax |
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162 | shl eax, 8 |
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380 | serge | 163 | add eax, SLOT_BASE |
237 | serge | 164 | mov [slot_base], eax |
165 | mov edi, eax |
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166 | _clear_ 256 ;clean extended information about process |
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167 | |||
168 | ; write application name |
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363 | serge | 169 | lea edi, [filename] |
237 | serge | 170 | mov al, '/' |
171 | call k_strrchr ; now eax points to name without path |
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172 | |||
173 | lea esi, [eax+1] |
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174 | test eax, eax |
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175 | jnz @F |
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363 | serge | 176 | lea esi, [filename] |
237 | serge | 177 | @@: |
178 | mov ecx, 8 ; 8 chars for name |
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179 | mov edi, [slot_base] |
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180 | .copy_process_name_loop: |
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181 | lodsb |
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182 | cmp al, '.' |
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183 | jz .copy_process_name_done |
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184 | test al, al |
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185 | jz .copy_process_name_done |
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186 | stosb |
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187 | loop .copy_process_name_loop |
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188 | .copy_process_name_done: |
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189 | |||
190 | mov ebx, cr3 |
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191 | mov [save_cr3], ebx |
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269 | serge | 192 | |
363 | serge | 193 | stdcall create_app_space,[hdr_mem],[file_base],[file_size] |
364 | diamond | 194 | mov ecx, -30 ; no memory |
237 | serge | 195 | test eax, eax |
196 | jz .failed |
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197 | |||
198 | mov ebx,[slot_base] |
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199 | mov [ebx+APPDATA.dir_table],eax |
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363 | serge | 200 | mov eax,[hdr_mem] |
237 | serge | 201 | mov [ebx+APPDATA.mem_size],eax |
202 | |||
357 | serge | 203 | if GREEDY_KERNEL |
204 | else |
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363 | serge | 205 | mov ecx, [hdr_mem] |
269 | serge | 206 | mov edi, [file_size] |
207 | add edi, 4095 |
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208 | and edi, not 4095 |
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209 | sub ecx, edi |
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210 | jna @F |
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211 | |||
212 | xor eax, eax |
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213 | add edi, new_app_base |
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237 | serge | 214 | cld |
269 | serge | 215 | rep stosb |
247 | serge | 216 | @@: |
269 | serge | 217 | end if |
218 | |||
219 | ; release only virtual space, not phisical memory |
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220 | |||
221 | stdcall free_kernel_space, [file_base] |
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363 | serge | 222 | lea eax, [hdr_cmdline] |
223 | lea ebx, [cmdline] |
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224 | lea ecx, [filename] |
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225 | stdcall set_app_params ,[slot],eax,ebx,ecx,[flags] |
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237 | serge | 226 | |
227 | mov eax, [save_cr3] |
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228 | call set_cr3 |
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229 | |||
247 | serge | 230 | xor ebx, ebx |
231 | mov [application_table_status],ebx ;unlock application_table_status mutex |
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232 | mov eax,[process_number] ;set result |
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164 | serge | 233 | ret |
237 | serge | 234 | .failed: |
235 | mov eax, [save_cr3] |
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236 | call set_cr3 |
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269 | serge | 237 | .err: |
247 | serge | 238 | .err_hdr: |
239 | stdcall kernel_free,[file_base] |
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240 | .err_file: |
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237 | serge | 241 | xor eax, eax |
242 | mov [application_table_status],eax |
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321 | diamond | 243 | mov eax, ecx |
237 | serge | 244 | ret |
245 | endp |
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164 | serge | 246 | |
237 | serge | 247 | align 4 |
248 | test_app_header: |
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249 | virtual at eax |
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250 | APP_HEADER_00 APP_HEADER_00 |
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251 | end virtual |
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252 | virtual at eax |
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164 | serge | 253 | APP_HEADER_01 APP_HEADER_01 |
254 | end virtual |
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255 | |||
237 | serge | 256 | cmp dword [eax], 'MENU' |
257 | jne .fail |
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258 | cmp word [eax+4],'ET' |
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259 | jne .fail |
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164 | serge | 260 | |
237 | serge | 261 | cmp [eax+6], word '00' |
262 | jne .check_01_header |
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164 | serge | 263 | |
237 | serge | 264 | mov ecx,[APP_HEADER_00.start] |
265 | mov [ebx+0x08], ecx ;app_eip |
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266 | mov edx,[APP_HEADER_00.mem_size] |
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267 | mov [ebx+0x10], edx ;app_mem |
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268 | shr edx,1 |
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269 | sub edx,0x10 |
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270 | mov [ebx+0x0C], edx ;app_esp |
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271 | mov ecx,[APP_HEADER_00.i_param] |
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272 | mov [ebx], ecx ;app_cmdline |
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273 | mov [ebx+4], dword 0 ;app_path |
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269 | serge | 274 | mov edx, [APP_HEADER_00.i_end] |
275 | mov [ebx+0x14], edx |
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164 | serge | 276 | ret |
277 | |||
237 | serge | 278 | .check_01_header: |
164 | serge | 279 | |
237 | serge | 280 | cmp [eax+6],word '01' |
281 | jne .fail |
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282 | |||
283 | mov ecx,[APP_HEADER_01.start] |
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284 | mov [ebx+0x08], ecx ;app_eip |
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285 | mov edx,[APP_HEADER_01.mem_size] |
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381 | serge | 286 | |
287 | ; \begin{diamond}[20.08.2006] |
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288 | ; sanity check (functions 19,58 load app_i_end bytes and that must |
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289 | ; fit in allocated memory to prevent kernel faults) |
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290 | cmp edx,[APP_HEADER_01.i_end] |
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291 | jb .fail |
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292 | ; \end{diamond}[20.08.2006] |
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293 | |||
237 | serge | 294 | mov [ebx+0x10], edx ;app_mem |
295 | mov ecx,[APP_HEADER_01.stack_top] |
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296 | mov [ebx+0x0C], ecx ;app_esp |
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297 | mov edx,[APP_HEADER_01.i_param] |
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298 | mov [ebx], edx ;app_cmdline |
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299 | mov ecx,[APP_HEADER_01.i_icon] |
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300 | mov [ebx+4], ecx ;app_path |
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269 | serge | 301 | mov edx, [APP_HEADER_01.i_end] |
302 | mov [ebx+0x14], edx |
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237 | serge | 303 | ret |
304 | .fail: |
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164 | serge | 305 | xor eax, eax |
306 | ret |
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307 | |||
308 | align 4 |
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309 | proc get_new_process_place |
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310 | ;input: |
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311 | ; none |
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312 | ;result: |
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313 | ; eax=[new_process_place]<>0 - ok |
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314 | ; 0 - failed. |
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315 | ;This function find least empty slot. |
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316 | ;It doesn't increase [TASK_COUNT]! |
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317 | mov eax,CURRENT_TASK |
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318 | mov ebx,[TASK_COUNT] |
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319 | inc ebx |
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320 | shl ebx,5 |
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321 | add ebx,eax ;ebx - address of process information for (last+1) slot |
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322 | .newprocessplace: |
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323 | ;eax = address of process information for current slot |
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324 | cmp eax,ebx |
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325 | jz .endnewprocessplace ;empty slot after high boundary |
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326 | add eax,0x20 |
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327 | cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty |
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328 | jnz .newprocessplace |
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329 | .endnewprocessplace: |
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330 | mov ebx,eax |
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331 | sub eax,CURRENT_TASK |
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332 | shr eax,5 ;calculate slot index |
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333 | cmp eax,256 |
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334 | jge .failed ;it should be <256 |
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335 | mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary) |
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336 | ret |
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337 | .failed: |
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338 | xor eax,eax |
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339 | ret |
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340 | endp |
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341 | |||
342 | align 4 |
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269 | serge | 343 | proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword |
164 | serge | 344 | locals |
345 | app_pages dd ? |
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346 | img_pages dd ? |
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347 | dir_addr dd ? |
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348 | app_tabs dd ? |
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349 | endl |
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350 | |||
276 | serge | 351 | mov ebx, pg_data.pg_mutex |
352 | call wait_mutex ;ebx |
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164 | serge | 353 | |
354 | xor eax, eax |
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355 | mov [dir_addr], eax |
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356 | |||
357 | mov eax, [app_size] |
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172 | serge | 358 | add eax, 4095 |
164 | serge | 359 | and eax, NOT(4095) |
360 | mov [app_size], eax |
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361 | mov ebx, eax |
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362 | shr eax, 12 |
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363 | mov [app_pages], eax |
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170 | serge | 364 | |
164 | serge | 365 | add ebx, 0x3FFFFF |
366 | and ebx, NOT(0x3FFFFF) |
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367 | shr ebx, 22 |
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368 | mov [app_tabs], ebx |
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369 | |||
170 | serge | 370 | mov ecx, [img_size] |
371 | add ecx, 4095 |
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372 | and ecx, NOT(4095) |
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164 | serge | 373 | |
170 | serge | 374 | mov [img_size], ecx |
375 | shr ecx, 12 |
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376 | mov [img_pages], ecx |
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164 | serge | 377 | |
170 | serge | 378 | if GREEDY_KERNEL |
379 | lea eax, [ecx+ebx+2] ;only image size |
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380 | else |
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381 | lea eax, [eax+ebx+2] ;all requested memory |
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382 | end if |
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383 | cmp eax, [pg_data.pages_free] |
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384 | ja .fail |
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385 | |||
164 | serge | 386 | call alloc_page |
387 | test eax, eax |
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388 | jz .fail |
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389 | mov [dir_addr], eax |
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390 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
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391 | |||
392 | mov esi, sys_pgdir |
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393 | mov edi, [tmp_task_pdir] |
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378 | serge | 394 | mov ecx, (page_tabs shr 20)/4 |
164 | serge | 395 | cld |
396 | rep movsd |
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397 | |||
378 | serge | 398 | mov eax, [dir_addr] |
399 | or eax, PG_SW |
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400 | stosd ; [(page_tabs shr 20)]= eax |
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401 | |||
402 | mov ecx, 0x800/4 |
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164 | serge | 403 | xor eax, eax |
404 | rep stosd |
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405 | |||
188 | serge | 406 | mov eax, [dir_addr] |
164 | serge | 407 | call set_cr3 |
408 | |||
409 | mov edx, [app_tabs] |
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410 | mov edi, new_app_base |
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411 | @@: |
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412 | call alloc_page |
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413 | test eax, eax |
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414 | jz .fail |
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415 | |||
188 | serge | 416 | stdcall map_page_table, edi, eax |
164 | serge | 417 | add edi, 0x00400000 |
418 | dec edx |
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419 | jnz @B |
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420 | |||
421 | mov edi, new_app_base |
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422 | shr edi, 10 |
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365 | serge | 423 | add edi, page_tabs |
269 | serge | 424 | |
164 | serge | 425 | mov ecx, [app_tabs] |
426 | shl ecx, 10 |
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427 | xor eax, eax |
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428 | rep stosd |
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429 | |||
269 | serge | 430 | mov ecx, [img_pages] |
431 | mov ebx, PG_UW |
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164 | serge | 432 | mov edx, new_app_base |
269 | serge | 433 | mov esi, [img_base] |
434 | mov edi, new_app_base |
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435 | shr esi, 10 |
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436 | shr edi, 10 |
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365 | serge | 437 | add esi, page_tabs |
438 | add edi, page_tabs |
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269 | serge | 439 | .remap: |
440 | lodsd |
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441 | or eax, ebx ; force user level r/w access |
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442 | stosd |
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443 | add edx, 0x1000 |
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444 | dec [app_pages] |
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445 | dec ecx |
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446 | jnz .remap |
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447 | |||
448 | mov ecx, [app_pages] |
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449 | test ecx, ecx |
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450 | jz .done |
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451 | |||
452 | if GREEDY_KERNEL |
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453 | mov eax, 0x02 |
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454 | .reserve: |
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455 | stosd |
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456 | invlpg [edx] |
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457 | add edx, 4096 |
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458 | dec ecx |
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459 | jnz .reserve |
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460 | else |
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461 | |||
164 | serge | 462 | .alloc: |
463 | call alloc_page |
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464 | test eax, eax |
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465 | jz .fail |
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466 | |||
467 | stdcall map_page,edx,eax,dword PG_UW |
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468 | add edx, 0x1000 |
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269 | serge | 469 | dec [app_pages] |
164 | serge | 470 | jnz .alloc |
269 | serge | 471 | end if |
164 | serge | 472 | |
269 | serge | 473 | .done: |
164 | serge | 474 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
475 | |||
476 | dec [pg_data.pg_mutex] |
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477 | mov eax, [dir_addr] |
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478 | ret |
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479 | .fail: |
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480 | dec [pg_data.pg_mutex] |
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481 | cmp [dir_addr], 0 |
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357 | serge | 482 | je @f |
164 | serge | 483 | stdcall destroy_app_space, [dir_addr] |
484 | @@: |
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485 | xor eax, eax |
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486 | ret |
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487 | endp |
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488 | |||
489 | align 4 |
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490 | set_cr3: |
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491 | mov esi, [CURRENT_TASK] |
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492 | mov ebx, esi |
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493 | shl esi,8 |
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380 | serge | 494 | mov [SLOT_BASE+esi+0xB8],eax |
164 | serge | 495 | imul ebx,tss_step |
496 | add ebx,tss_data |
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497 | mov [ebx+28], eax |
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498 | mov cr3, eax |
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499 | ret |
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500 | |||
501 | align 4 |
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502 | proc destroy_page_table stdcall, pg_tab:dword |
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503 | |||
504 | push esi |
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505 | |||
506 | mov esi, [pg_tab] |
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507 | mov ecx, 1024 |
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508 | .free: |
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509 | mov eax, [esi] |
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510 | test eax, 1 |
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511 | jz .next |
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512 | call free_page |
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513 | .next: |
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514 | add esi, 4 |
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515 | dec ecx |
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516 | jnz .free |
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517 | pop esi |
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518 | ret |
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519 | endp |
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520 | |||
521 | align 4 |
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522 | proc destroy_app_space stdcall, pg_dir:dword |
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523 | |||
276 | serge | 524 | mov ebx, pg_data.pg_mutex |
525 | call wait_mutex ;ebx |
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164 | serge | 526 | |
527 | xor edx,edx |
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528 | mov eax,0x2 |
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529 | mov ebx, [pg_dir] |
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530 | .loop: |
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531 | ;eax = current slot of process |
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532 | mov ecx,eax |
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533 | shl ecx,5 |
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534 | cmp byte [CURRENT_TASK+ecx+0xa],9 ;if process running? |
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535 | jz @f ;skip empty slots |
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536 | shl ecx,3 |
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380 | serge | 537 | cmp [SLOT_BASE+ecx+0xB8],ebx ;compare page directory addresses |
164 | serge | 538 | jnz @f |
539 | inc edx ;thread found |
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540 | @@: |
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541 | inc eax |
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542 | cmp eax,[TASK_COUNT] ;exit loop if we look through all processes |
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543 | jle .loop |
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544 | |||
545 | ;edx = number of threads |
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546 | ;our process is zombi so it isn't counted |
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547 | cmp edx,1 |
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548 | jg .exit |
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549 | ;if there isn't threads then clear memory. |
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550 | |||
551 | mov eax, [pg_dir] |
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552 | and eax, not 0xFFF |
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553 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
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554 | mov esi, [tmp_task_pdir] |
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378 | serge | 555 | add esi, 0x800 |
556 | mov edi, 0x800/4 |
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164 | serge | 557 | .destroy: |
558 | mov eax, [esi] |
||
559 | test eax, 1 |
||
560 | jz .next |
||
561 | and eax, not 0xFFF |
||
562 | stdcall map_page,[tmp_task_ptab],eax,dword PG_SW |
||
563 | stdcall destroy_page_table, [tmp_task_ptab] |
||
564 | mov eax, [esi] |
||
565 | call free_page |
||
566 | .next: |
||
567 | add esi, 4 |
||
568 | dec edi |
||
569 | jnz .destroy |
||
570 | |||
571 | mov eax, [pg_dir] |
||
572 | call free_page |
||
573 | .exit: |
||
574 | stdcall map_page,[tmp_task_ptab],dword 0,dword PG_UNMAP |
||
575 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
||
576 | dec [pg_data.pg_mutex] |
||
577 | ret |
||
578 | endp |
||
579 | |||
580 | pid_to_slot: |
||
581 | ;Input: |
||
582 | ; eax - pid of process |
||
583 | ;Output: |
||
584 | ; eax - slot of process or 0 if process don't exists |
||
585 | ;Search process by PID. |
||
586 | push ebx |
||
587 | push ecx |
||
588 | mov ebx,[TASK_COUNT] |
||
589 | shl ebx,5 |
||
590 | mov ecx,2*32 |
||
591 | |||
592 | .loop: |
||
593 | ;ecx=offset of current process info entry |
||
594 | ;ebx=maximum permitted offset |
||
595 | cmp byte [CURRENT_TASK+ecx+0xa],9 |
||
596 | jz .endloop ;skip empty slots |
||
597 | cmp [CURRENT_TASK+ecx+0x4],eax ;check PID |
||
598 | jz .pid_found |
||
599 | .endloop: |
||
600 | add ecx,32 |
||
601 | cmp ecx,ebx |
||
602 | jle .loop |
||
603 | |||
604 | pop ecx |
||
605 | pop ebx |
||
606 | xor eax,eax |
||
607 | ret |
||
608 | |||
609 | .pid_found: |
||
610 | shr ecx,5 |
||
611 | mov eax,ecx ;convert offset to index of slot |
||
612 | pop ecx |
||
613 | pop ebx |
||
614 | ret |
||
615 | |||
616 | check_region: |
||
617 | ;input: |
||
618 | ; ebx - start of buffer |
||
619 | ; ecx - size of buffer |
||
620 | ;result: |
||
621 | ; eax = 1 region lays in app memory |
||
622 | ; eax = 0 region don't lays in app memory |
||
623 | mov eax,[CURRENT_TASK] |
||
624 | jmp check_process_region |
||
625 | ;----------------------------------------------------------------------------- |
||
626 | check_process_region: |
||
627 | ;input: |
||
628 | ; eax - slot |
||
629 | ; ebx - start of buffer |
||
630 | ; ecx - size of buffer |
||
631 | ;result: |
||
632 | ; eax = 1 region lays in app memory |
||
633 | ; eax = 0 region don't lays in app memory |
||
634 | |||
635 | test ecx,ecx |
||
636 | jle .ok |
||
637 | shl eax,5 |
||
638 | cmp word [CURRENT_TASK+eax+0xa],0 |
||
639 | jnz .failed |
||
640 | shl eax,3 |
||
380 | serge | 641 | mov eax,[SLOT_BASE+eax+0xb8] |
164 | serge | 642 | test eax,eax |
643 | jz .failed |
||
644 | |||
645 | mov eax,1 |
||
646 | ret |
||
647 | |||
648 | |||
649 | ; call MEM_Get_Linear_Address |
||
650 | ; push ebx |
||
651 | ; push ecx |
||
652 | ; push edx |
||
653 | ; mov edx,ebx |
||
654 | ; and edx,not (4096-1) |
||
655 | ; sub ebx,edx |
||
656 | ; add ecx,ebx |
||
657 | ; mov ebx,edx |
||
658 | ; add ecx,(4096-1) |
||
659 | ; and ecx,not (4096-1) |
||
660 | ;.loop: |
||
661 | ;;eax - linear address of page directory |
||
662 | ;;ebx - current page |
||
663 | ;;ecx - current size |
||
664 | ; mov edx,ebx |
||
665 | ; shr edx,22 |
||
666 | ; mov edx,[eax+4*edx] |
||
667 | ; and edx,not (4096-1) |
||
668 | ; test edx,edx |
||
669 | ; jz .failed1 |
||
670 | ; push eax |
||
671 | ; mov eax,edx |
||
672 | ; call MEM_Get_Linear_Address |
||
673 | ; mov edx,ebx |
||
674 | ; shr edx,12 |
||
675 | ; and edx,(1024-1) |
||
676 | ; mov eax,[eax+4*edx] |
||
677 | ; and eax,not (4096-1) |
||
678 | ; test eax,eax |
||
679 | ; pop eax |
||
680 | ; jz .failed1 |
||
681 | ; add ebx,4096 |
||
682 | ; sub ecx,4096 |
||
683 | ; jg .loop |
||
684 | ; pop edx |
||
685 | ; pop ecx |
||
686 | ; pop ebx |
||
687 | .ok: |
||
688 | mov eax,1 |
||
689 | ret |
||
690 | ; |
||
691 | ;.failed1: |
||
692 | ; pop edx |
||
693 | ; pop ecx |
||
694 | ; pop ebx |
||
695 | .failed: |
||
696 | xor eax,eax |
||
697 | ret |
||
698 | |||
699 | align 4 |
||
700 | proc read_process_memory |
||
701 | ;Input: |
||
702 | ; eax - process slot |
||
703 | ; ebx - buffer address |
||
704 | ; ecx - buffer size |
||
705 | ; edx - start address in other process |
||
706 | ;Output: |
||
707 | ; eax - number of bytes read. |
||
708 | locals |
||
709 | slot dd ? |
||
710 | buff dd ? |
||
711 | r_count dd ? |
||
712 | offset dd ? |
||
713 | tmp_r_cnt dd ? |
||
714 | endl |
||
715 | |||
716 | mov [slot], eax |
||
717 | mov [buff], ebx |
||
718 | mov [r_count], ecx |
||
719 | mov [tmp_r_cnt], ecx |
||
720 | mov [offset], edx |
||
721 | |||
722 | pushad |
||
723 | .read_mem: |
||
724 | mov edx, [offset] |
||
725 | mov ebx, [tmp_r_cnt] |
||
726 | |||
727 | mov ecx, 0x400000 |
||
728 | and edx, 0x3FFFFF |
||
729 | sub ecx, edx |
||
730 | cmp ecx, ebx |
||
731 | jbe @f |
||
732 | mov ecx, ebx |
||
733 | @@: |
||
734 | cmp ecx, 0x8000 |
||
735 | jna @F |
||
736 | mov ecx, 0x8000 |
||
737 | @@: |
||
738 | mov eax, [slot] |
||
739 | shl eax,8 |
||
740 | mov ebx, [offset] |
||
741 | add ebx, new_app_base |
||
742 | push ecx |
||
743 | stdcall map_memEx, [proc_mem_map],\ |
||
380 | serge | 744 | [SLOT_BASE+eax+0xB8],\ |
164 | serge | 745 | ebx, ecx |
746 | pop ecx |
||
747 | |||
748 | mov esi, [offset] |
||
749 | and esi, 0xfff |
||
750 | add esi, [proc_mem_map] |
||
751 | mov edi, [buff] |
||
752 | mov edx, ecx |
||
753 | rep movsb |
||
754 | |||
755 | add [offset], edx |
||
756 | sub [tmp_r_cnt], edx |
||
757 | jnz .read_mem |
||
758 | |||
759 | popad |
||
760 | mov eax, [r_count] |
||
761 | ret |
||
762 | endp |
||
763 | |||
764 | align 4 |
||
765 | proc write_process_memory |
||
766 | ;Input: |
||
767 | ; eax - process slot |
||
768 | ; ebx - buffer address |
||
769 | ; ecx - buffer size |
||
770 | ; edx - start address in other process |
||
771 | ;Output: |
||
772 | ; eax - number of bytes written |
||
773 | |||
774 | locals |
||
775 | slot dd ? |
||
776 | buff dd ? |
||
777 | w_count dd ? |
||
778 | offset dd ? |
||
779 | tmp_w_cnt dd ? |
||
780 | endl |
||
781 | |||
782 | mov [slot], eax |
||
783 | mov [buff], ebx |
||
784 | mov [w_count], ecx |
||
785 | mov [tmp_w_cnt], ecx |
||
786 | mov [offset], edx |
||
787 | |||
788 | pushad |
||
789 | .read_mem: |
||
790 | mov edx, [offset] |
||
791 | mov ebx, [tmp_w_cnt] |
||
792 | |||
793 | mov ecx, 0x400000 |
||
794 | and edx, 0x3FFFFF |
||
795 | sub ecx, edx |
||
796 | cmp ecx, ebx |
||
797 | jbe @f |
||
798 | mov ecx, ebx |
||
799 | @@: |
||
800 | cmp ecx, 0x8000 |
||
801 | jna @F |
||
802 | mov ecx, 0x8000 |
||
803 | @@: |
||
804 | mov eax, [slot] |
||
805 | shl eax,8 |
||
806 | mov ebx, [offset] |
||
807 | add ebx, new_app_base |
||
808 | push ecx |
||
809 | stdcall map_memEx, [proc_mem_map],\ |
||
380 | serge | 810 | [SLOT_BASE+eax+0xB8],\ |
164 | serge | 811 | ebx, ecx |
812 | pop ecx |
||
813 | |||
814 | mov edi, [offset] |
||
815 | and edi, 0xfff |
||
816 | add edi, [proc_mem_map] |
||
817 | mov esi, [buff] |
||
818 | mov edx, ecx |
||
819 | rep movsb |
||
820 | |||
821 | add [offset], edx |
||
822 | sub [tmp_w_cnt], edx |
||
823 | jnz .read_mem |
||
824 | |||
825 | popad |
||
826 | mov eax, [w_count] |
||
827 | ret |
||
828 | endp |
||
829 | |||
830 | align 4 |
||
831 | proc new_sys_threads |
||
832 | locals |
||
833 | slot dd ? |
||
237 | serge | 834 | app_cmdline dd ? ;0x00 |
835 | app_path dd ? ;0x04 |
||
836 | app_eip dd ? ;0x08 |
||
837 | app_esp dd ? ;0x0C |
||
838 | app_mem dd ? ;0x10 |
||
164 | serge | 839 | endl |
840 | |||
237 | serge | 841 | cmp eax,1 |
842 | jne .failed ;other subfunctions |
||
164 | serge | 843 | |
237 | serge | 844 | xor eax,eax |
845 | mov [app_cmdline], eax |
||
846 | mov [app_path], eax |
||
847 | mov [app_eip], ebx |
||
848 | mov [app_esp], ecx |
||
164 | serge | 849 | |
850 | mov esi,new_process_loading |
||
851 | call sys_msg_board_str |
||
852 | .wait_lock: |
||
853 | cmp [application_table_status],0 |
||
854 | je .get_lock |
||
855 | call change_task |
||
856 | jmp .wait_lock |
||
857 | |||
858 | .get_lock: |
||
859 | mov eax, 1 |
||
860 | xchg eax, [application_table_status] |
||
861 | cmp eax, 0 |
||
862 | jne .wait_lock |
||
863 | |||
864 | call set_application_table_status |
||
865 | |||
866 | call get_new_process_place |
||
867 | test eax, eax |
||
868 | jz .failed |
||
869 | |||
870 | mov [slot], eax |
||
871 | |||
872 | mov esi,[CURRENT_TASK] |
||
873 | shl esi,8 |
||
380 | serge | 874 | add esi,SLOT_BASE |
237 | serge | 875 | mov ebx,esi ;ebx=esi - pointer to extended information about current thread |
164 | serge | 876 | |
237 | serge | 877 | mov edi, eax |
164 | serge | 878 | shl edi,8 |
380 | serge | 879 | add edi,SLOT_BASE |
237 | serge | 880 | mov edx,edi ;edx=edi - pointer to extended infomation about new thread |
164 | serge | 881 | mov ecx,256/4 |
237 | serge | 882 | xor eax, eax |
883 | cld |
||
884 | rep stosd ;clean extended information about new thread |
||
885 | mov esi,ebx |
||
164 | serge | 886 | mov edi,edx |
392 | serge | 887 | mov byte [edi], '@' |
888 | inc edi |
||
164 | serge | 889 | mov ecx,11 |
237 | serge | 890 | rep movsb ;copy process name |
164 | serge | 891 | |
237 | serge | 892 | mov eax,[ebx+APPDATA.heap_base] |
893 | mov [edx+APPDATA.heap_base], eax |
||
164 | serge | 894 | |
237 | serge | 895 | mov ecx,[ebx+APPDATA.heap_top] |
896 | mov [edx+APPDATA.heap_top], ecx |
||
897 | |||
898 | mov eax,[ebx+APPDATA.mem_size] |
||
899 | mov [edx+APPDATA.mem_size], eax |
||
900 | |||
901 | mov ecx,[ebx+APPDATA.dir_table] |
||
902 | mov [edx+APPDATA.dir_table],ecx ;copy page directory |
||
903 | |||
904 | lea eax, [app_cmdline] |
||
905 | stdcall set_app_params ,[slot],eax,dword 0,\ |
||
906 | dword 0,dword 0 |
||
907 | |||
164 | serge | 908 | mov esi,new_process_running |
909 | call sys_msg_board_str ;output information about succefull startup |
||
910 | |||
911 | mov [application_table_status],0 ;unlock application_table_status mutex |
||
912 | mov eax,[process_number] ;set result |
||
913 | ret |
||
914 | .failed: |
||
915 | mov [application_table_status],0 |
||
916 | mov eax,-1 |
||
917 | ret |
||
918 | endp |
||
919 | |||
276 | serge | 920 | ; param |
921 | ; ebx=mutex |
||
922 | |||
164 | serge | 923 | align 4 |
276 | serge | 924 | wait_mutex: |
925 | push eax |
||
926 | push ebx |
||
321 | diamond | 927 | .do_wait: |
164 | serge | 928 | cmp dword [ebx],0 |
929 | je .get_lock |
||
930 | call change_task |
||
321 | diamond | 931 | jmp .do_wait |
164 | serge | 932 | .get_lock: |
933 | mov eax, 1 |
||
934 | xchg eax, [ebx] |
||
935 | test eax, eax |
||
321 | diamond | 936 | jnz .do_wait |
276 | serge | 937 | pop ebx |
938 | pop eax |
||
164 | serge | 939 | ret |
940 | |||
237 | serge | 941 | align 4 |
942 | proc set_app_params stdcall,slot:dword, params:dword,\ |
||
943 | cmd_line:dword, app_path:dword, flags:dword |
||
164 | serge | 944 | |
357 | serge | 945 | locals |
946 | pl0_stack dd ? |
||
947 | endl |
||
237 | serge | 948 | |
392 | serge | 949 | stdcall kernel_alloc, RING0_STACK_SIZE+512 |
357 | serge | 950 | mov [pl0_stack], eax |
951 | |||
392 | serge | 952 | lea edi, [eax+RING0_STACK_SIZE] |
357 | serge | 953 | |
954 | mov eax, [slot] |
||
955 | mov ebx, eax |
||
956 | |||
957 | shl eax, 8 |
||
380 | serge | 958 | mov [eax+SLOT_BASE+APPDATA.fpu_state], edi |
959 | mov [eax+SLOT_BASE+APPDATA.fpu_handler], 0 |
||
960 | mov [eax+SLOT_BASE+APPDATA.sse_handler], 0 |
||
357 | serge | 961 | |
962 | mov esi, fpu_data |
||
237 | serge | 963 | mov ecx, 512/4 |
964 | rep movsd |
||
965 | |||
357 | serge | 966 | cmp ebx,[TASK_COUNT] |
967 | jle .noinc |
||
968 | inc dword [TASK_COUNT] ;update number of processes |
||
237 | serge | 969 | .noinc: |
281 | serge | 970 | shl ebx,8 |
380 | serge | 971 | lea edx, [ebx+SLOT_BASE+APP_EV_OFFSET] |
972 | mov [SLOT_BASE+APPDATA.fd_ev+ebx],edx |
||
973 | mov [SLOT_BASE+APPDATA.bk_ev+ebx],edx |
||
354 | serge | 974 | |
975 | add edx, APP_OBJ_OFFSET-APP_EV_OFFSET |
||
380 | serge | 976 | mov [SLOT_BASE+APPDATA.fd_obj+ebx],edx |
977 | mov [SLOT_BASE+APPDATA.bk_obj+ebx],edx |
||
237 | serge | 978 | |
281 | serge | 979 | mov ecx, [def_cursor] |
380 | serge | 980 | mov [SLOT_BASE+APPDATA.cursor+ebx],ecx |
357 | serge | 981 | mov eax, [pl0_stack] |
380 | serge | 982 | mov [SLOT_BASE+APPDATA.pl0_stack+ebx],eax |
281 | serge | 983 | |
984 | shr ebx,3 |
||
237 | serge | 985 | mov eax, new_app_base |
986 | mov dword [CURRENT_TASK+ebx+0x10],eax |
||
987 | |||
988 | .add_command_line: |
||
989 | mov edx,[params] |
||
990 | mov edx,[edx] ;app_cmdline |
||
991 | test edx,edx |
||
992 | jz @F ;application don't need parameters |
||
281 | serge | 993 | |
994 | mov eax, edx |
||
995 | add eax, 256 |
||
996 | jc @f |
||
997 | |||
380 | serge | 998 | cmp eax, [SLOT_BASE+APPDATA.mem_size+ebx*8] |
281 | serge | 999 | ja @f |
1000 | |||
237 | serge | 1001 | add edx, new_app_base |
262 | diamond | 1002 | stdcall k_strncpy, edx, [cmd_line], 256 |
237 | serge | 1003 | @@: |
1004 | mov edx,[params] |
||
1005 | mov edx, [edx+4] ;app_path |
||
1006 | test edx,edx |
||
1007 | jz @F ;application don't need path of file |
||
262 | diamond | 1008 | mov eax, edx |
1009 | add eax, 1024 |
||
1010 | jc @f |
||
380 | serge | 1011 | cmp eax, [SLOT_BASE+APPDATA.mem_size+ebx*8] |
262 | diamond | 1012 | ja @f |
237 | serge | 1013 | add edx, new_app_base |
262 | diamond | 1014 | stdcall k_strncpy, edx, [app_path], 1024 |
237 | serge | 1015 | @@: |
1016 | mov ebx,[slot] |
||
1017 | mov eax,ebx |
||
1018 | shl ebx,5 |
||
1019 | ; set window state to 'normal' (non-minimized/maximized/rolled-up) state |
||
1020 | mov [ebx+window_data+WDATA.fl_wstate], WSTATE_NORMAL |
||
1021 | mov [ebx+window_data+WDATA.fl_redraw], 1 |
||
1022 | add ebx,CURRENT_TASK ;ebx - pointer to information about process |
||
1023 | mov [ebx+TASKDATA.wnd_number],al;set window number on screen = process slot |
||
1024 | |||
1025 | mov [ebx+TASKDATA.event_mask],dword 1+2+4 ;set default event flags (see 40 function) |
||
1026 | |||
1027 | inc dword [process_number] |
||
1028 | mov eax,[process_number] |
||
1029 | mov [ebx+4],eax ;set PID |
||
1030 | |||
1031 | mov ecx,ebx |
||
1032 | add ecx,(draw_data-CURRENT_TASK) ;ecx - pointer to draw data |
||
1033 | ;set draw data to full screen |
||
1034 | |||
1035 | mov [ecx+0],dword 0 |
||
1036 | mov [ecx+4],dword 0 |
||
381 | serge | 1037 | mov eax,[ScreenWidth] |
237 | serge | 1038 | mov [ecx+8],eax |
381 | serge | 1039 | mov eax,[ScreenHeight] |
237 | serge | 1040 | mov [ecx+12],eax |
1041 | |||
1042 | mov edi,[slot] |
||
1043 | imul edi,tss_step |
||
1044 | add edi,tss_data |
||
1045 | mov ecx,128/4 |
||
1046 | xor eax, eax |
||
1047 | cld |
||
1048 | rep stosd |
||
1049 | ;Add IO access table - bit array of permitted ports |
||
1050 | not eax |
||
1051 | mov ecx,2048 |
||
1052 | rep stosd ; access to 4096*8=65536 ports |
||
1053 | sub edi, tss_step |
||
1054 | |||
1055 | ;set cr3 register in TSS of application |
||
1056 | mov ecx, [slot] |
||
1057 | shl ecx, 8 |
||
380 | serge | 1058 | mov eax,[SLOT_BASE+ecx+APPDATA.dir_table] |
237 | serge | 1059 | mov [edi+TSS._cr3],eax |
1060 | |||
1061 | mov esi,[params] |
||
1062 | mov eax, [esi+0x08] ;app_eip |
||
1063 | mov [edi+TSS._eip],eax ;set eip in TSS |
||
1064 | mov eax, [esi+0x0C] ;app_esp |
||
1065 | mov [edi+TSS._esp],eax ;set stack in TSS |
||
273 | diamond | 1066 | mov [edi+TSS._eflags],dword 0x1202 |
237 | serge | 1067 | |
1068 | mov [edi+TSS._cs],app_code ;selector of code segment |
||
1069 | mov [edi+TSS._ss],app_data |
||
1070 | mov [edi+TSS._ds],app_data |
||
1071 | mov [edi+TSS._es],app_data |
||
1072 | mov [edi+TSS._fs],app_data |
||
1073 | mov [edi+TSS._gs],graph_data ;selector of graphic segment |
||
1074 | mov [edi+TSS._io],word 128 |
||
1075 | mov [edi+TSS._ss0], os_data |
||
357 | serge | 1076 | mov ebx, [pl0_stack] |
392 | serge | 1077 | add ebx, RING0_STACK_SIZE |
237 | serge | 1078 | mov [edi+TSS._esp0],ebx |
1079 | |||
1080 | mov ecx, edi ;ecx - address of application TSS |
||
1081 | mov ebx,[slot] |
||
1082 | shl ebx,3 |
||
1083 | ;set TSS descriptor |
||
1084 | mov [ebx+gdts+tss0+0],word tss_step ;limit (size) |
||
1085 | mov [ebx+gdts+tss0+2],cx ;part of offset |
||
1086 | shr ecx,16 |
||
1087 | mov [ebx+gdts+tss0+4],cl ;part of offset |
||
1088 | mov [ebx+gdts+tss0+7],ch ;part of offset |
||
1089 | mov [ebx+gdts+tss0+5],word 01010000b*256+11101001b ;system flags |
||
1090 | |||
1091 | ;flush keyboard and buttons queue |
||
1092 | mov [KEY_COUNT],byte 0 |
||
1093 | mov [BTN_COUNT],byte 0 |
||
1094 | |||
1095 | mov edi,[slot] |
||
1096 | shl edi,5 |
||
1097 | add edi,window_data |
||
1098 | mov ebx,[slot] |
||
1099 | movzx esi,word [WIN_STACK+ebx*2] |
||
1100 | lea esi,[WIN_POS+esi*2] |
||
1101 | call windowactivate ;gui initialization |
||
1102 | |||
1103 | mov ebx,[slot] |
||
1104 | shl ebx,5 |
||
1105 | mov [CURRENT_TASK+ebx+0xa],byte 0 ;set process state - running |
||
1106 | ; set if debuggee |
||
1107 | mov eax, [flags] |
||
1108 | test byte [flags], 1 |
||
1109 | jz .no_debug |
||
1110 | mov [CURRENT_TASK+ebx+0xa],byte 1 ;set process state - suspended |
||
1111 | mov eax,[CURRENT_TASK] |
||
380 | serge | 1112 | mov [SLOT_BASE+ebx*8+0xac],eax ;set debugger PID - current |
237 | serge | 1113 | .no_debug: |
1114 | mov esi,new_process_running |
||
1115 | call sys_msg_board_str ;output information about succefull startup |
||
1116 | ret |
||
1117 | endp |
||
1118 | |||
1119 | |||
1120 | |||
164 | serge | 1121 | include "debug.inc" |
1122 | |||
1123 | iglobal |
||
1124 | new_process_loading db 'K : New Process - loading',13,10,0 |
||
1125 | new_process_running db 'K : New Process - done',13,10,0 |
||
1126 | start_not_enough_memory db 'K : New Process - not enough memory',13,10,0 |
||
1127 | endg256 |
||
1128 |