Rev 287 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
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237 | serge | 1 | GREEDY_KERNEL equ 0 |
164 | serge | 2 | |
170 | serge | 3 | |
164 | serge | 4 | struc APP_HEADER_00 |
5 | { .banner dq ? |
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6 | .version dd ? ;+8 |
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7 | .start dd ? ;+12 |
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8 | .i_end dd ? ;+16 |
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9 | .mem_size dd ? ;+20 |
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10 | .i_param dd ? ;+24 |
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11 | } |
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12 | |||
13 | struc APP_HEADER_01 |
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14 | { .banner dq ? |
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15 | .version dd ? ;+8 |
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16 | .start dd ? ;+12 |
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17 | .i_end dd ? ;+16 |
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18 | .mem_size dd ? ;+20 |
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19 | .stack_top dd ? ;+24 |
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20 | .i_param dd ? ;+28 |
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21 | .i_icon dd ? ;+32 |
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22 | } |
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23 | |||
237 | serge | 24 | struc TSS |
25 | { |
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26 | ._back rw 2 |
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27 | ._esp0 rd 1 |
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28 | ._ss0 rw 2 |
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29 | ._esp1 rd 1 |
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30 | ._ss1 rw 2 |
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31 | ._esp2 rd 1 |
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32 | ._ss2 rw 2 |
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33 | ._cr3 rd 1 |
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34 | ._eip rd 1 |
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35 | ._eflags rd 1 |
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36 | ._eax rd 1 |
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37 | ._ecx rd 1 |
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38 | ._edx rd 1 |
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39 | ._ebx rd 1 |
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40 | ._esp rd 1 |
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41 | ._ebp rd 1 |
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42 | ._esi rd 1 |
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43 | ._edi rd 1 |
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44 | ._es rw 2 |
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45 | ._cs rw 2 |
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46 | ._ss rw 2 |
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47 | ._ds rw 2 |
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48 | ._fs rw 2 |
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49 | ._gs rw 2 |
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50 | ._ldt rw 2 |
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51 | ._trap rw 1 |
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52 | ._io rw 1 |
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53 | } |
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54 | |||
55 | virtual at 0 |
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56 | TSS TSS |
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57 | end virtual |
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58 | |||
59 | struc APP_PARAMS |
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60 | { .app_cmdline ;0x00 |
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61 | .app_path ;0x04 |
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62 | .app_eip ;0x08 |
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63 | .app_esp ;0x0C |
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64 | .app_mem ;0x10 |
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65 | } |
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66 | |||
67 | macro _clear_ op |
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68 | { mov ecx, op/4 |
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69 | xor eax, eax |
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70 | cld |
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71 | rep stosd |
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72 | } |
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73 | |||
164 | serge | 74 | align 4 |
269 | serge | 75 | proc fs_exec stdcall file_name:dword, cmd_line:dword, flags:dword |
237 | serge | 76 | locals |
77 | save_cr3 dd ? |
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78 | slot dd ? |
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79 | slot_base dd ? |
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80 | file_base dd ? |
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81 | file_size dd ? |
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164 | serge | 82 | |
237 | serge | 83 | app_cmdline dd ? ;0x00 |
84 | app_path dd ? ;0x04 |
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85 | app_eip dd ? ;0x08 |
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86 | app_esp dd ? ;0x0C |
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87 | app_mem dd ? ;0x10 |
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269 | serge | 88 | app_i_end dd ? ;0x14 |
237 | serge | 89 | endl |
164 | serge | 90 | |
237 | serge | 91 | stdcall load_file,[file_name] |
92 | mov ecx, -ERROR_FILE_NOT_FOUND |
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93 | test eax, eax |
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247 | serge | 94 | jz .err_file |
237 | serge | 95 | |
96 | mov [file_base], eax |
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97 | mov [file_size], ebx |
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98 | |||
99 | lea ebx, [app_cmdline] |
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100 | call test_app_header |
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101 | mov ecx, -0x1F |
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102 | test eax, eax |
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247 | serge | 103 | jz .err_hdr |
237 | serge | 104 | |
105 | mov esi, new_process_loading |
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106 | call sys_msg_board_str ; write message to message board |
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107 | |||
108 | .wait_lock: |
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109 | cmp [application_table_status],0 |
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110 | je .get_lock |
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111 | call change_task |
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112 | jmp .wait_lock |
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113 | |||
114 | .get_lock: |
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115 | mov eax, 1 |
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116 | xchg eax, [application_table_status] |
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117 | cmp eax, 0 |
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118 | jne .wait_lock |
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119 | |||
269 | serge | 120 | pushfd |
121 | cli |
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122 | |||
237 | serge | 123 | call set_application_table_status |
124 | |||
125 | call get_new_process_place |
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126 | test eax, eax |
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127 | mov ecx, -0x20 ; too many processes |
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269 | serge | 128 | jz .err |
237 | serge | 129 | |
130 | mov [slot], eax |
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131 | shl eax, 8 |
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132 | add eax, PROC_BASE |
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133 | mov [slot_base], eax |
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134 | mov edi, eax |
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135 | _clear_ 256 ;clean extended information about process |
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136 | |||
137 | ; write application name |
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138 | mov edi, [file_name] |
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139 | mov al, '/' |
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140 | call k_strrchr ; now eax points to name without path |
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141 | |||
142 | lea esi, [eax+1] |
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143 | test eax, eax |
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144 | jnz @F |
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145 | mov esi, [file_name] |
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146 | @@: |
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147 | mov ecx, 8 ; 8 chars for name |
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148 | mov edi, [slot_base] |
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149 | .copy_process_name_loop: |
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150 | lodsb |
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151 | cmp al, '.' |
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152 | jz .copy_process_name_done |
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153 | test al, al |
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154 | jz .copy_process_name_done |
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155 | stosb |
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156 | loop .copy_process_name_loop |
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157 | .copy_process_name_done: |
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158 | |||
159 | mov ebx, cr3 |
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160 | mov [save_cr3], ebx |
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269 | serge | 161 | |
162 | stdcall create_app_space,[app_mem],[file_base],[file_size] |
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237 | serge | 163 | test eax, eax |
164 | jz .failed |
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165 | |||
166 | mov ebx,[slot_base] |
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167 | mov [ebx+APPDATA.dir_table],eax |
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168 | mov eax,[app_mem] |
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169 | mov [ebx+APPDATA.mem_size],eax |
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170 | |||
269 | serge | 171 | if not GREEDY_KERNEL |
287 | serge | 172 | mov ecx, [app_mem] |
269 | serge | 173 | mov edi, [file_size] |
174 | add edi, 4095 |
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175 | and edi, not 4095 |
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176 | sub ecx, edi |
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177 | jna @F |
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178 | |||
179 | xor eax, eax |
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180 | add edi, new_app_base |
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237 | serge | 181 | cld |
269 | serge | 182 | rep stosb |
247 | serge | 183 | @@: |
269 | serge | 184 | end if |
185 | |||
186 | ; release only virtual space, not phisical memory |
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187 | |||
188 | stdcall free_kernel_space, [file_base] |
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237 | serge | 189 | lea eax, [app_cmdline] |
190 | stdcall set_app_params ,[slot],eax,[cmd_line],\ |
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252 | serge | 191 | [file_name], [flags] |
237 | serge | 192 | |
193 | mov eax, [save_cr3] |
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194 | call set_cr3 |
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195 | |||
196 | popfd |
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247 | serge | 197 | xor ebx, ebx |
198 | mov [application_table_status],ebx ;unlock application_table_status mutex |
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199 | mov eax,[process_number] ;set result |
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164 | serge | 200 | ret |
237 | serge | 201 | .failed: |
202 | mov eax, [save_cr3] |
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203 | call set_cr3 |
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269 | serge | 204 | .err: |
205 | popfd |
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247 | serge | 206 | .err_hdr: |
207 | stdcall kernel_free,[file_base] |
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208 | .err_file: |
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237 | serge | 209 | xor eax, eax |
210 | mov [application_table_status],eax |
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321 | diamond | 211 | mov eax, ecx |
237 | serge | 212 | ret |
213 | endp |
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164 | serge | 214 | |
237 | serge | 215 | align 4 |
216 | test_app_header: |
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217 | virtual at eax |
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218 | APP_HEADER_00 APP_HEADER_00 |
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219 | end virtual |
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220 | virtual at eax |
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164 | serge | 221 | APP_HEADER_01 APP_HEADER_01 |
222 | end virtual |
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223 | |||
237 | serge | 224 | cmp dword [eax], 'MENU' |
225 | jne .fail |
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226 | cmp word [eax+4],'ET' |
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227 | jne .fail |
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164 | serge | 228 | |
237 | serge | 229 | cmp [eax+6], word '00' |
230 | jne .check_01_header |
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164 | serge | 231 | |
237 | serge | 232 | mov ecx,[APP_HEADER_00.start] |
233 | mov [ebx+0x08], ecx ;app_eip |
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234 | mov edx,[APP_HEADER_00.mem_size] |
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235 | mov [ebx+0x10], edx ;app_mem |
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236 | shr edx,1 |
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237 | sub edx,0x10 |
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238 | mov [ebx+0x0C], edx ;app_esp |
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239 | mov ecx,[APP_HEADER_00.i_param] |
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240 | mov [ebx], ecx ;app_cmdline |
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241 | mov [ebx+4], dword 0 ;app_path |
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269 | serge | 242 | mov edx, [APP_HEADER_00.i_end] |
243 | mov [ebx+0x14], edx |
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164 | serge | 244 | ret |
245 | |||
237 | serge | 246 | .check_01_header: |
164 | serge | 247 | |
237 | serge | 248 | cmp [eax+6],word '01' |
249 | jne .fail |
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250 | |||
251 | mov ecx,[APP_HEADER_01.start] |
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252 | mov [ebx+0x08], ecx ;app_eip |
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253 | mov edx,[APP_HEADER_01.mem_size] |
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254 | mov [ebx+0x10], edx ;app_mem |
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255 | mov ecx,[APP_HEADER_01.stack_top] |
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256 | mov [ebx+0x0C], ecx ;app_esp |
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257 | mov edx,[APP_HEADER_01.i_param] |
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258 | mov [ebx], edx ;app_cmdline |
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259 | mov ecx,[APP_HEADER_01.i_icon] |
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260 | mov [ebx+4], ecx ;app_path |
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269 | serge | 261 | mov edx, [APP_HEADER_01.i_end] |
262 | mov [ebx+0x14], edx |
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237 | serge | 263 | ret |
264 | .fail: |
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164 | serge | 265 | xor eax, eax |
266 | ret |
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267 | |||
268 | align 4 |
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269 | proc get_new_process_place |
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270 | ;input: |
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271 | ; none |
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272 | ;result: |
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273 | ; eax=[new_process_place]<>0 - ok |
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274 | ; 0 - failed. |
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275 | ;This function find least empty slot. |
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276 | ;It doesn't increase [TASK_COUNT]! |
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277 | mov eax,CURRENT_TASK |
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278 | mov ebx,[TASK_COUNT] |
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279 | inc ebx |
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280 | shl ebx,5 |
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281 | add ebx,eax ;ebx - address of process information for (last+1) slot |
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282 | .newprocessplace: |
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283 | ;eax = address of process information for current slot |
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284 | cmp eax,ebx |
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285 | jz .endnewprocessplace ;empty slot after high boundary |
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286 | add eax,0x20 |
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287 | cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty |
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288 | jnz .newprocessplace |
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289 | .endnewprocessplace: |
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290 | mov ebx,eax |
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291 | sub eax,CURRENT_TASK |
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292 | shr eax,5 ;calculate slot index |
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293 | cmp eax,256 |
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294 | jge .failed ;it should be <256 |
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295 | mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary) |
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296 | ; mov [new_process_place], eax |
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297 | ret |
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298 | |||
299 | .failed: |
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300 | xor eax,eax |
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301 | ret |
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302 | endp |
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303 | |||
269 | serge | 304 | |
164 | serge | 305 | align 4 |
269 | serge | 306 | proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword |
164 | serge | 307 | locals |
308 | app_pages dd ? |
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309 | img_pages dd ? |
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310 | dir_addr dd ? |
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311 | app_tabs dd ? |
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312 | endl |
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313 | |||
276 | serge | 314 | mov ebx, pg_data.pg_mutex |
315 | call wait_mutex ;ebx |
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164 | serge | 316 | |
317 | xor eax, eax |
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318 | mov [dir_addr], eax |
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319 | |||
320 | mov eax, [app_size] |
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172 | serge | 321 | add eax, 4095 |
164 | serge | 322 | and eax, NOT(4095) |
323 | mov [app_size], eax |
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324 | mov ebx, eax |
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325 | shr eax, 12 |
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326 | mov [app_pages], eax |
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170 | serge | 327 | |
164 | serge | 328 | add ebx, 0x3FFFFF |
329 | and ebx, NOT(0x3FFFFF) |
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330 | shr ebx, 22 |
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331 | mov [app_tabs], ebx |
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332 | |||
170 | serge | 333 | mov ecx, [img_size] |
334 | add ecx, 4095 |
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335 | and ecx, NOT(4095) |
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164 | serge | 336 | |
170 | serge | 337 | mov [img_size], ecx |
338 | shr ecx, 12 |
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339 | mov [img_pages], ecx |
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164 | serge | 340 | |
170 | serge | 341 | if GREEDY_KERNEL |
342 | lea eax, [ecx+ebx+2] ;only image size |
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343 | else |
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344 | lea eax, [eax+ebx+2] ;all requested memory |
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345 | end if |
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346 | cmp eax, [pg_data.pages_free] |
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347 | ja .fail |
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348 | |||
164 | serge | 349 | call alloc_page |
350 | test eax, eax |
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351 | jz .fail |
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352 | mov [dir_addr], eax |
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353 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
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354 | |||
355 | mov esi, sys_pgdir |
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356 | mov edi, [tmp_task_pdir] |
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357 | mov ecx, 384 |
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358 | cld |
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359 | rep movsd |
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360 | |||
361 | mov ecx, 384 |
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362 | xor eax, eax |
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363 | cld |
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364 | rep stosd |
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365 | |||
366 | mov ecx, 256 |
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367 | mov esi, sys_pgdir+0xc00 |
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368 | rep movsd |
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369 | |||
188 | serge | 370 | mov eax, [dir_addr] |
164 | serge | 371 | or eax, PG_SW |
372 | mov ebx, [tmp_task_pdir] |
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373 | mov [ebx+0x600], eax |
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374 | |||
375 | mov eax, [dir_addr] |
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376 | call set_cr3 |
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377 | |||
378 | mov edx, [app_tabs] |
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379 | mov edi, new_app_base |
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380 | @@: |
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381 | call alloc_page |
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382 | test eax, eax |
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383 | jz .fail |
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384 | |||
188 | serge | 385 | stdcall map_page_table, edi, eax |
164 | serge | 386 | add edi, 0x00400000 |
387 | dec edx |
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388 | jnz @B |
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389 | |||
390 | mov edi, new_app_base |
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391 | shr edi, 10 |
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392 | add edi, pages_tab |
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269 | serge | 393 | |
164 | serge | 394 | mov ecx, [app_tabs] |
395 | shl ecx, 10 |
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396 | xor eax, eax |
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397 | rep stosd |
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398 | |||
269 | serge | 399 | mov ecx, [img_pages] |
400 | mov ebx, PG_UW |
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164 | serge | 401 | mov edx, new_app_base |
269 | serge | 402 | mov esi, [img_base] |
403 | mov edi, new_app_base |
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404 | shr esi, 10 |
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405 | shr edi, 10 |
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406 | add esi, pages_tab |
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407 | add edi, pages_tab |
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408 | .remap: |
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409 | lodsd |
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410 | or eax, ebx ; force user level r/w access |
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411 | stosd |
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412 | add edx, 0x1000 |
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413 | dec [app_pages] |
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414 | dec ecx |
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415 | jnz .remap |
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416 | |||
417 | mov ecx, [app_pages] |
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418 | test ecx, ecx |
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419 | jz .done |
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420 | |||
421 | if GREEDY_KERNEL |
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422 | mov eax, 0x02 |
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423 | .reserve: |
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424 | stosd |
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425 | invlpg [edx] |
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426 | add edx, 4096 |
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427 | dec ecx |
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428 | jnz .reserve |
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429 | else |
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430 | |||
164 | serge | 431 | .alloc: |
432 | call alloc_page |
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433 | test eax, eax |
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434 | jz .fail |
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435 | |||
436 | stdcall map_page,edx,eax,dword PG_UW |
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437 | add edx, 0x1000 |
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269 | serge | 438 | dec [app_pages] |
164 | serge | 439 | jnz .alloc |
440 | |||
269 | serge | 441 | end if |
164 | serge | 442 | |
269 | serge | 443 | .done: |
164 | serge | 444 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
445 | |||
446 | dec [pg_data.pg_mutex] |
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447 | mov eax, [dir_addr] |
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448 | ret |
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449 | .fail: |
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450 | dec [pg_data.pg_mutex] |
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451 | cmp [dir_addr], 0 |
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452 | jz @f |
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453 | stdcall destroy_app_space, [dir_addr] |
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454 | @@: |
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455 | xor eax, eax |
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456 | ret |
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457 | endp |
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458 | |||
269 | serge | 459 | |
460 | |||
164 | serge | 461 | align 4 |
462 | set_cr3: |
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463 | mov esi, [CURRENT_TASK] |
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464 | mov ebx, esi |
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465 | shl esi,8 |
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466 | mov [PROC_BASE+esi+0xB8],eax |
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467 | imul ebx,tss_step |
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468 | add ebx,tss_data |
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469 | mov [ebx+28], eax |
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470 | mov cr3, eax |
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471 | ret |
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472 | |||
473 | align 4 |
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474 | proc destroy_page_table stdcall, pg_tab:dword |
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475 | |||
476 | push esi |
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477 | |||
478 | mov esi, [pg_tab] |
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479 | mov ecx, 1024 |
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480 | .free: |
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481 | mov eax, [esi] |
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482 | test eax, 1 |
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483 | jz .next |
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484 | call free_page |
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485 | .next: |
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486 | add esi, 4 |
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487 | dec ecx |
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488 | jnz .free |
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489 | pop esi |
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490 | ret |
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491 | endp |
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492 | |||
493 | align 4 |
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494 | proc destroy_app_space stdcall, pg_dir:dword |
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495 | |||
276 | serge | 496 | mov ebx, pg_data.pg_mutex |
497 | call wait_mutex ;ebx |
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164 | serge | 498 | |
499 | xor edx,edx |
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500 | mov eax,0x2 |
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501 | mov ebx, [pg_dir] |
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502 | |||
503 | .loop: |
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504 | ;eax = current slot of process |
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505 | mov ecx,eax |
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506 | shl ecx,5 |
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507 | cmp byte [CURRENT_TASK+ecx+0xa],9 ;if process running? |
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508 | jz @f ;skip empty slots |
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509 | shl ecx,3 |
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510 | cmp [PROC_BASE+ecx+0xB8],ebx ;compare page directory addresses |
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511 | jnz @f |
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512 | inc edx ;thread found |
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513 | @@: |
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514 | inc eax |
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515 | cmp eax,[TASK_COUNT] ;exit loop if we look through all processes |
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516 | jle .loop |
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517 | |||
518 | ;edx = number of threads |
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519 | ;our process is zombi so it isn't counted |
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520 | cmp edx,1 |
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521 | jg .exit |
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522 | ;if there isn't threads then clear memory. |
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523 | |||
524 | mov eax, [pg_dir] |
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525 | and eax, not 0xFFF |
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526 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
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527 | mov esi, [tmp_task_pdir] |
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188 | serge | 528 | add esi, 0x604 |
164 | serge | 529 | mov edi, 383 |
530 | .destroy: |
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531 | mov eax, [esi] |
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532 | test eax, 1 |
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533 | jz .next |
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534 | and eax, not 0xFFF |
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535 | stdcall map_page,[tmp_task_ptab],eax,dword PG_SW |
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536 | stdcall destroy_page_table, [tmp_task_ptab] |
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537 | mov eax, [esi] |
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538 | call free_page |
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539 | .next: |
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540 | add esi, 4 |
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541 | dec edi |
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542 | jnz .destroy |
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543 | |||
544 | mov eax, [pg_dir] |
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545 | call free_page |
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546 | .exit: |
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547 | stdcall map_page,[tmp_task_ptab],dword 0,dword PG_UNMAP |
||
548 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
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549 | dec [pg_data.pg_mutex] |
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550 | ret |
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551 | endp |
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552 | |||
553 | align 4 |
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554 | proc fs_execute |
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555 | |||
556 | ;fn_read:dword, file_size:dword, cluster:dword |
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557 | |||
558 | ; ebx - cmdline |
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559 | ; edx - flags |
||
560 | ; ebp - full filename |
||
561 | ; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it |
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562 | |||
563 | locals |
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564 | cmdline dd ? |
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565 | flags dd ? |
||
566 | filename dd ? |
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567 | retval dd ? |
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568 | endl |
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569 | |||
570 | pushad |
||
571 | |||
572 | mov [cmdline], ebx |
||
573 | mov [flags], edx |
||
574 | mov eax, [ebp] |
||
575 | mov [filename], eax |
||
576 | |||
276 | serge | 577 | mov ebx, pg_data.tmp_task_mutex |
578 | call wait_mutex ;ebx |
||
164 | serge | 579 | |
580 | mov edi, [tmp_task_data] |
||
269 | serge | 581 | mov ecx, (1024+256)/4 |
164 | serge | 582 | xor eax, eax |
583 | rep stosd |
||
584 | |||
585 | mov esi, [filename] |
||
586 | mov edi, [tmp_task_data] |
||
587 | mov ecx, 1024 |
||
588 | rep movsb |
||
589 | |||
590 | mov esi, [cmdline] |
||
591 | test esi, esi |
||
592 | jz @f |
||
593 | mov ecx, 256 |
||
594 | rep movsb |
||
595 | @@: |
||
269 | serge | 596 | mov eax, [tmp_task_data] |
597 | lea ebx, [eax+1024] ;cmd line |
||
164 | serge | 598 | |
269 | serge | 599 | stdcall fs_exec, eax, ebx, [flags] |
237 | serge | 600 | |
164 | serge | 601 | mov [retval], eax |
602 | popad |
||
603 | mov [pg_data.tmp_task_mutex], 0 |
||
604 | mov eax, [retval] |
||
605 | ret |
||
606 | |||
607 | endp |
||
608 | |||
609 | |||
610 | pid_to_slot: |
||
611 | ;Input: |
||
612 | ; eax - pid of process |
||
613 | ;Output: |
||
614 | ; eax - slot of process or 0 if process don't exists |
||
615 | ;Search process by PID. |
||
616 | push ebx |
||
617 | push ecx |
||
618 | mov ebx,[TASK_COUNT] |
||
619 | shl ebx,5 |
||
620 | mov ecx,2*32 |
||
621 | |||
622 | .loop: |
||
623 | ;ecx=offset of current process info entry |
||
624 | ;ebx=maximum permitted offset |
||
625 | cmp byte [CURRENT_TASK+ecx+0xa],9 |
||
626 | jz .endloop ;skip empty slots |
||
627 | cmp [CURRENT_TASK+ecx+0x4],eax ;check PID |
||
628 | jz .pid_found |
||
629 | .endloop: |
||
630 | add ecx,32 |
||
631 | cmp ecx,ebx |
||
632 | jle .loop |
||
633 | |||
634 | pop ecx |
||
635 | pop ebx |
||
636 | xor eax,eax |
||
637 | ret |
||
638 | |||
639 | .pid_found: |
||
640 | shr ecx,5 |
||
641 | mov eax,ecx ;convert offset to index of slot |
||
642 | pop ecx |
||
643 | pop ebx |
||
644 | ret |
||
645 | |||
646 | check_region: |
||
647 | ;input: |
||
648 | ; ebx - start of buffer |
||
649 | ; ecx - size of buffer |
||
650 | ;result: |
||
651 | ; eax = 1 region lays in app memory |
||
652 | ; eax = 0 region don't lays in app memory |
||
653 | mov eax,[CURRENT_TASK] |
||
654 | jmp check_process_region |
||
655 | ;----------------------------------------------------------------------------- |
||
656 | check_process_region: |
||
657 | ;input: |
||
658 | ; eax - slot |
||
659 | ; ebx - start of buffer |
||
660 | ; ecx - size of buffer |
||
661 | ;result: |
||
662 | ; eax = 1 region lays in app memory |
||
663 | ; eax = 0 region don't lays in app memory |
||
664 | |||
665 | test ecx,ecx |
||
666 | jle .ok |
||
667 | shl eax,5 |
||
668 | cmp word [CURRENT_TASK+eax+0xa],0 |
||
669 | jnz .failed |
||
670 | shl eax,3 |
||
671 | mov eax,[PROC_BASE+eax+0xb8] |
||
672 | test eax,eax |
||
673 | jz .failed |
||
674 | |||
675 | mov eax,1 |
||
676 | ret |
||
677 | |||
678 | |||
679 | ; call MEM_Get_Linear_Address |
||
680 | ; push ebx |
||
681 | ; push ecx |
||
682 | ; push edx |
||
683 | ; mov edx,ebx |
||
684 | ; and edx,not (4096-1) |
||
685 | ; sub ebx,edx |
||
686 | ; add ecx,ebx |
||
687 | ; mov ebx,edx |
||
688 | ; add ecx,(4096-1) |
||
689 | ; and ecx,not (4096-1) |
||
690 | ;.loop: |
||
691 | ;;eax - linear address of page directory |
||
692 | ;;ebx - current page |
||
693 | ;;ecx - current size |
||
694 | ; mov edx,ebx |
||
695 | ; shr edx,22 |
||
696 | ; mov edx,[eax+4*edx] |
||
697 | ; and edx,not (4096-1) |
||
698 | ; test edx,edx |
||
699 | ; jz .failed1 |
||
700 | ; push eax |
||
701 | ; mov eax,edx |
||
702 | ; call MEM_Get_Linear_Address |
||
703 | ; mov edx,ebx |
||
704 | ; shr edx,12 |
||
705 | ; and edx,(1024-1) |
||
706 | ; mov eax,[eax+4*edx] |
||
707 | ; and eax,not (4096-1) |
||
708 | ; test eax,eax |
||
709 | ; pop eax |
||
710 | ; jz .failed1 |
||
711 | ; add ebx,4096 |
||
712 | ; sub ecx,4096 |
||
713 | ; jg .loop |
||
714 | ; pop edx |
||
715 | ; pop ecx |
||
716 | ; pop ebx |
||
717 | .ok: |
||
718 | mov eax,1 |
||
719 | ret |
||
720 | ; |
||
721 | ;.failed1: |
||
722 | ; pop edx |
||
723 | ; pop ecx |
||
724 | ; pop ebx |
||
725 | .failed: |
||
726 | xor eax,eax |
||
727 | ret |
||
728 | |||
729 | align 4 |
||
730 | proc read_process_memory |
||
731 | ;Input: |
||
732 | ; eax - process slot |
||
733 | ; ebx - buffer address |
||
734 | ; ecx - buffer size |
||
735 | ; edx - start address in other process |
||
736 | ;Output: |
||
737 | ; eax - number of bytes read. |
||
738 | locals |
||
739 | slot dd ? |
||
740 | buff dd ? |
||
741 | r_count dd ? |
||
742 | offset dd ? |
||
743 | tmp_r_cnt dd ? |
||
744 | endl |
||
745 | |||
746 | mov [slot], eax |
||
747 | mov [buff], ebx |
||
748 | mov [r_count], ecx |
||
749 | mov [tmp_r_cnt], ecx |
||
750 | mov [offset], edx |
||
751 | |||
752 | pushad |
||
753 | .read_mem: |
||
754 | mov edx, [offset] |
||
755 | mov ebx, [tmp_r_cnt] |
||
756 | |||
757 | mov ecx, 0x400000 |
||
758 | and edx, 0x3FFFFF |
||
759 | sub ecx, edx |
||
760 | cmp ecx, ebx |
||
761 | jbe @f |
||
762 | mov ecx, ebx |
||
763 | @@: |
||
764 | cmp ecx, 0x8000 |
||
765 | jna @F |
||
766 | mov ecx, 0x8000 |
||
767 | @@: |
||
768 | mov eax, [slot] |
||
769 | shl eax,8 |
||
770 | mov ebx, [offset] |
||
771 | add ebx, new_app_base |
||
772 | push ecx |
||
773 | stdcall map_memEx, [proc_mem_map],\ |
||
774 | [PROC_BASE+eax+0xB8],\ |
||
775 | ebx, ecx |
||
776 | pop ecx |
||
777 | |||
778 | mov esi, [offset] |
||
779 | and esi, 0xfff |
||
780 | add esi, [proc_mem_map] |
||
781 | mov edi, [buff] |
||
782 | mov edx, ecx |
||
783 | rep movsb |
||
784 | |||
785 | add [offset], edx |
||
786 | sub [tmp_r_cnt], edx |
||
787 | jnz .read_mem |
||
788 | |||
789 | popad |
||
790 | mov eax, [r_count] |
||
791 | ret |
||
792 | endp |
||
793 | |||
794 | align 4 |
||
795 | proc write_process_memory |
||
796 | ;Input: |
||
797 | ; eax - process slot |
||
798 | ; ebx - buffer address |
||
799 | ; ecx - buffer size |
||
800 | ; edx - start address in other process |
||
801 | ;Output: |
||
802 | ; eax - number of bytes written |
||
803 | |||
804 | locals |
||
805 | slot dd ? |
||
806 | buff dd ? |
||
807 | w_count dd ? |
||
808 | offset dd ? |
||
809 | tmp_w_cnt dd ? |
||
810 | endl |
||
811 | |||
812 | mov [slot], eax |
||
813 | mov [buff], ebx |
||
814 | mov [w_count], ecx |
||
815 | mov [tmp_w_cnt], ecx |
||
816 | mov [offset], edx |
||
817 | |||
818 | pushad |
||
819 | .read_mem: |
||
820 | mov edx, [offset] |
||
821 | mov ebx, [tmp_w_cnt] |
||
822 | |||
823 | mov ecx, 0x400000 |
||
824 | and edx, 0x3FFFFF |
||
825 | sub ecx, edx |
||
826 | cmp ecx, ebx |
||
827 | jbe @f |
||
828 | mov ecx, ebx |
||
829 | @@: |
||
830 | cmp ecx, 0x8000 |
||
831 | jna @F |
||
832 | mov ecx, 0x8000 |
||
833 | @@: |
||
834 | mov eax, [slot] |
||
835 | shl eax,8 |
||
836 | mov ebx, [offset] |
||
837 | add ebx, new_app_base |
||
838 | push ecx |
||
839 | stdcall map_memEx, [proc_mem_map],\ |
||
840 | [PROC_BASE+eax+0xB8],\ |
||
841 | ebx, ecx |
||
842 | pop ecx |
||
843 | |||
844 | mov edi, [offset] |
||
845 | and edi, 0xfff |
||
846 | add edi, [proc_mem_map] |
||
847 | mov esi, [buff] |
||
848 | mov edx, ecx |
||
849 | rep movsb |
||
850 | |||
851 | add [offset], edx |
||
852 | sub [tmp_w_cnt], edx |
||
853 | jnz .read_mem |
||
854 | |||
855 | popad |
||
856 | mov eax, [w_count] |
||
857 | ret |
||
858 | endp |
||
859 | |||
860 | align 4 |
||
861 | proc new_sys_threads |
||
862 | locals |
||
863 | slot dd ? |
||
237 | serge | 864 | app_cmdline dd ? ;0x00 |
865 | app_path dd ? ;0x04 |
||
866 | app_eip dd ? ;0x08 |
||
867 | app_esp dd ? ;0x0C |
||
868 | app_mem dd ? ;0x10 |
||
164 | serge | 869 | endl |
870 | |||
237 | serge | 871 | cmp eax,1 |
872 | jne .failed ;other subfunctions |
||
164 | serge | 873 | |
237 | serge | 874 | xor eax,eax |
875 | mov [app_cmdline], eax |
||
876 | mov [app_path], eax |
||
877 | mov [app_eip], ebx |
||
878 | mov [app_esp], ecx |
||
164 | serge | 879 | |
880 | mov esi,new_process_loading |
||
881 | call sys_msg_board_str |
||
882 | .wait_lock: |
||
883 | cmp [application_table_status],0 |
||
884 | je .get_lock |
||
885 | call change_task |
||
886 | jmp .wait_lock |
||
887 | |||
888 | .get_lock: |
||
889 | mov eax, 1 |
||
890 | xchg eax, [application_table_status] |
||
891 | cmp eax, 0 |
||
892 | jne .wait_lock |
||
893 | |||
894 | call set_application_table_status |
||
895 | |||
896 | call get_new_process_place |
||
897 | test eax, eax |
||
898 | jz .failed |
||
899 | |||
900 | mov [slot], eax |
||
901 | |||
902 | mov esi,[CURRENT_TASK] |
||
903 | shl esi,8 |
||
904 | add esi,PROC_BASE |
||
237 | serge | 905 | mov ebx,esi ;ebx=esi - pointer to extended information about current thread |
164 | serge | 906 | |
237 | serge | 907 | mov edi, eax |
164 | serge | 908 | shl edi,8 |
909 | add edi,PROC_BASE |
||
237 | serge | 910 | mov edx,edi ;edx=edi - pointer to extended infomation about new thread |
164 | serge | 911 | mov ecx,256/4 |
237 | serge | 912 | xor eax, eax |
913 | cld |
||
914 | rep stosd ;clean extended information about new thread |
||
915 | mov esi,ebx |
||
164 | serge | 916 | mov edi,edx |
917 | mov ecx,11 |
||
237 | serge | 918 | rep movsb ;copy process name |
164 | serge | 919 | |
237 | serge | 920 | mov eax,[ebx+APPDATA.heap_base] |
921 | mov [edx+APPDATA.heap_base], eax |
||
164 | serge | 922 | |
237 | serge | 923 | mov ecx,[ebx+APPDATA.heap_top] |
924 | mov [edx+APPDATA.heap_top], ecx |
||
925 | |||
926 | mov eax,[ebx+APPDATA.mem_size] |
||
927 | mov [edx+APPDATA.mem_size], eax |
||
928 | |||
929 | mov ecx,[ebx+APPDATA.dir_table] |
||
930 | mov [edx+APPDATA.dir_table],ecx ;copy page directory |
||
931 | |||
932 | lea eax, [app_cmdline] |
||
933 | stdcall set_app_params ,[slot],eax,dword 0,\ |
||
934 | dword 0,dword 0 |
||
935 | |||
164 | serge | 936 | mov esi,new_process_running |
937 | call sys_msg_board_str ;output information about succefull startup |
||
938 | |||
939 | mov [application_table_status],0 ;unlock application_table_status mutex |
||
940 | mov eax,[process_number] ;set result |
||
941 | ret |
||
942 | .failed: |
||
943 | mov [application_table_status],0 |
||
944 | mov eax,-1 |
||
945 | ret |
||
946 | endp |
||
947 | |||
276 | serge | 948 | ; param |
949 | ; ebx=mutex |
||
950 | |||
164 | serge | 951 | align 4 |
276 | serge | 952 | wait_mutex: |
953 | push eax |
||
954 | push ebx |
||
321 | diamond | 955 | .do_wait: |
164 | serge | 956 | cmp dword [ebx],0 |
957 | je .get_lock |
||
958 | call change_task |
||
321 | diamond | 959 | jmp .do_wait |
164 | serge | 960 | .get_lock: |
961 | mov eax, 1 |
||
962 | xchg eax, [ebx] |
||
963 | test eax, eax |
||
321 | diamond | 964 | jnz .do_wait |
276 | serge | 965 | pop ebx |
966 | pop eax |
||
164 | serge | 967 | ret |
968 | |||
237 | serge | 969 | align 4 |
970 | proc set_app_params stdcall,slot:dword, params:dword,\ |
||
971 | cmd_line:dword, app_path:dword, flags:dword |
||
164 | serge | 972 | |
237 | serge | 973 | mov edi, [slot] |
974 | mov esi, [fpu_data] |
||
975 | bt [cpu_caps], CAPS_SSE |
||
976 | jnc .no_SSE |
||
977 | |||
978 | shl edi, 8 |
||
979 | mov eax, edi |
||
980 | lea edi, [esi+edi*2] |
||
981 | mov [eax+PROC_BASE+APPDATA.fpu_state], edi |
||
982 | mov [eax+PROC_BASE+APPDATA.fpu_handler], 0 |
||
983 | mov [eax+PROC_BASE+APPDATA.sse_handler], 0 |
||
984 | mov ecx, 512/4 |
||
985 | jmp @F |
||
986 | .no_SSE: |
||
987 | mov eax, edi |
||
988 | shl eax, 8 |
||
989 | mov ebx, edi |
||
990 | shl edi, 7 |
||
991 | shl ebx, 4 |
||
992 | sub edi, ebx ;edi*=112 |
||
993 | add edi, esi |
||
994 | mov [eax+PROC_BASE+APPDATA.fpu_state], edi |
||
995 | mov [eax+PROC_BASE+APPDATA.fpu_handler], 0 |
||
996 | mov [eax+PROC_BASE+APPDATA.sse_handler], 0 |
||
997 | mov ecx, 112/4 |
||
998 | @@: |
||
999 | rep movsd |
||
1000 | |||
281 | serge | 1001 | mov ebx,[slot] |
1002 | cmp ebx,[TASK_COUNT] |
||
1003 | jle .noinc |
||
1004 | inc dword [TASK_COUNT] ;update number of processes |
||
237 | serge | 1005 | .noinc: |
281 | serge | 1006 | shl ebx,8 |
1007 | lea edx, [ebx+PROC_BASE+APP_OBJ_OFFSET] |
||
1008 | mov [PROC_BASE+APPDATA.fd_obj+ebx],edx |
||
1009 | mov [PROC_BASE+APPDATA.bk_obj+ebx],edx |
||
237 | serge | 1010 | |
281 | serge | 1011 | mov ecx, [def_cursor] |
1012 | mov [PROC_BASE+APPDATA.cursor+ebx],ecx |
||
1013 | |||
1014 | shr ebx,3 |
||
237 | serge | 1015 | mov eax, new_app_base |
1016 | mov dword [CURRENT_TASK+ebx+0x10],eax |
||
1017 | |||
1018 | .add_command_line: |
||
1019 | mov edx,[params] |
||
1020 | mov edx,[edx] ;app_cmdline |
||
1021 | test edx,edx |
||
1022 | jz @F ;application don't need parameters |
||
281 | serge | 1023 | |
1024 | mov eax, edx |
||
1025 | add eax, 256 |
||
1026 | jc @f |
||
1027 | |||
1028 | cmp eax, [PROC_BASE+APPDATA.mem_size+ebx*8] |
||
1029 | ja @f |
||
1030 | |||
237 | serge | 1031 | add edx, new_app_base |
262 | diamond | 1032 | stdcall k_strncpy, edx, [cmd_line], 256 |
237 | serge | 1033 | @@: |
1034 | mov edx,[params] |
||
1035 | mov edx, [edx+4] ;app_path |
||
1036 | test edx,edx |
||
1037 | jz @F ;application don't need path of file |
||
262 | diamond | 1038 | mov eax, edx |
1039 | add eax, 1024 |
||
1040 | jc @f |
||
1041 | cmp eax, [PROC_BASE+APPDATA.mem_size+ebx*8] |
||
1042 | ja @f |
||
237 | serge | 1043 | add edx, new_app_base |
262 | diamond | 1044 | stdcall k_strncpy, edx, [app_path], 1024 |
237 | serge | 1045 | @@: |
1046 | mov ebx,[slot] |
||
1047 | mov eax,ebx |
||
1048 | shl ebx,5 |
||
1049 | ; set window state to 'normal' (non-minimized/maximized/rolled-up) state |
||
1050 | mov [ebx+window_data+WDATA.fl_wstate], WSTATE_NORMAL |
||
1051 | mov [ebx+window_data+WDATA.fl_redraw], 1 |
||
1052 | add ebx,CURRENT_TASK ;ebx - pointer to information about process |
||
1053 | mov [ebx+TASKDATA.wnd_number],al;set window number on screen = process slot |
||
1054 | |||
1055 | mov [ebx+TASKDATA.event_mask],dword 1+2+4 ;set default event flags (see 40 function) |
||
1056 | |||
1057 | inc dword [process_number] |
||
1058 | mov eax,[process_number] |
||
1059 | mov [ebx+4],eax ;set PID |
||
1060 | |||
1061 | mov ecx,ebx |
||
1062 | add ecx,(draw_data-CURRENT_TASK) ;ecx - pointer to draw data |
||
1063 | ;set draw data to full screen |
||
1064 | |||
1065 | mov [ecx+0],dword 0 |
||
1066 | mov [ecx+4],dword 0 |
||
1067 | mov eax,[SCR_X_SIZE] |
||
1068 | mov [ecx+8],eax |
||
1069 | mov eax,[SCR_Y_SIZE] |
||
1070 | mov [ecx+12],eax |
||
1071 | |||
1072 | mov edi,[slot] |
||
1073 | imul edi,tss_step |
||
1074 | add edi,tss_data |
||
1075 | mov ecx,128/4 |
||
1076 | xor eax, eax |
||
1077 | cld |
||
1078 | rep stosd |
||
1079 | ;Add IO access table - bit array of permitted ports |
||
1080 | not eax |
||
1081 | mov ecx,2048 |
||
1082 | rep stosd ; access to 4096*8=65536 ports |
||
1083 | sub edi, tss_step |
||
1084 | |||
1085 | ;set cr3 register in TSS of application |
||
1086 | mov ecx, [slot] |
||
1087 | shl ecx, 8 |
||
1088 | mov eax,[PROC_BASE+ecx+APPDATA.dir_table] |
||
1089 | mov [edi+TSS._cr3],eax |
||
1090 | |||
1091 | mov esi,[params] |
||
1092 | mov eax, [esi+0x08] ;app_eip |
||
1093 | mov [edi+TSS._eip],eax ;set eip in TSS |
||
1094 | mov eax, [esi+0x0C] ;app_esp |
||
1095 | mov [edi+TSS._esp],eax ;set stack in TSS |
||
273 | diamond | 1096 | mov [edi+TSS._eflags],dword 0x1202 |
237 | serge | 1097 | |
1098 | mov [edi+TSS._cs],app_code ;selector of code segment |
||
1099 | mov [edi+TSS._ss],app_data |
||
1100 | mov [edi+TSS._ds],app_data |
||
1101 | mov [edi+TSS._es],app_data |
||
1102 | mov [edi+TSS._fs],app_data |
||
1103 | mov [edi+TSS._gs],graph_data ;selector of graphic segment |
||
1104 | mov [edi+TSS._io],word 128 |
||
1105 | mov [edi+TSS._ss0], os_data |
||
1106 | mov ebx,[slot] |
||
1107 | shl ebx,12 |
||
1108 | add ebx,sysint_stack_data+4096 |
||
1109 | mov [edi+TSS._esp0],ebx |
||
1110 | |||
1111 | mov ecx, edi ;ecx - address of application TSS |
||
1112 | mov ebx,[slot] |
||
1113 | shl ebx,3 |
||
1114 | ;set TSS descriptor |
||
1115 | mov [ebx+gdts+tss0+0],word tss_step ;limit (size) |
||
1116 | mov [ebx+gdts+tss0+2],cx ;part of offset |
||
1117 | shr ecx,16 |
||
1118 | mov [ebx+gdts+tss0+4],cl ;part of offset |
||
1119 | mov [ebx+gdts+tss0+7],ch ;part of offset |
||
1120 | mov [ebx+gdts+tss0+5],word 01010000b*256+11101001b ;system flags |
||
1121 | |||
1122 | ;flush keyboard and buttons queue |
||
1123 | mov [KEY_COUNT],byte 0 |
||
1124 | mov [BTN_COUNT],byte 0 |
||
1125 | |||
1126 | mov edi,[slot] |
||
1127 | shl edi,5 |
||
1128 | add edi,window_data |
||
1129 | mov ebx,[slot] |
||
1130 | movzx esi,word [WIN_STACK+ebx*2] |
||
1131 | lea esi,[WIN_POS+esi*2] |
||
1132 | call windowactivate ;gui initialization |
||
1133 | |||
1134 | mov ebx,[slot] |
||
1135 | shl ebx,5 |
||
1136 | mov [CURRENT_TASK+ebx+0xa],byte 0 ;set process state - running |
||
1137 | ; set if debuggee |
||
1138 | mov eax, [flags] |
||
1139 | test byte [flags], 1 |
||
1140 | jz .no_debug |
||
1141 | mov [CURRENT_TASK+ebx+0xa],byte 1 ;set process state - suspended |
||
1142 | mov eax,[CURRENT_TASK] |
||
1143 | mov [PROC_BASE+ebx*8+0xac],eax ;set debugger PID - current |
||
1144 | .no_debug: |
||
1145 | mov esi,new_process_running |
||
1146 | call sys_msg_board_str ;output information about succefull startup |
||
1147 | ret |
||
1148 | endp |
||
1149 | |||
1150 | |||
1151 | |||
164 | serge | 1152 | include "debug.inc" |
1153 | |||
1154 | iglobal |
||
1155 | new_process_loading db 'K : New Process - loading',13,10,0 |
||
1156 | new_process_running db 'K : New Process - done',13,10,0 |
||
1157 | start_not_enough_memory db 'K : New Process - not enough memory',13,10,0 |
||
1158 | endg256 |
||
1159 |