Rev 262 | 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 |
172 | mov ecx, [app_i_end] |
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173 | mov edi, [file_size] |
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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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211 | ret |
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212 | endp |
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164 | serge | 213 | |
237 | serge | 214 | align 4 |
215 | test_app_header: |
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216 | virtual at eax |
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217 | APP_HEADER_00 APP_HEADER_00 |
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218 | end virtual |
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219 | virtual at eax |
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164 | serge | 220 | APP_HEADER_01 APP_HEADER_01 |
221 | end virtual |
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222 | |||
237 | serge | 223 | cmp dword [eax], 'MENU' |
224 | jne .fail |
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225 | cmp word [eax+4],'ET' |
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226 | jne .fail |
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164 | serge | 227 | |
237 | serge | 228 | cmp [eax+6], word '00' |
229 | jne .check_01_header |
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164 | serge | 230 | |
237 | serge | 231 | mov ecx,[APP_HEADER_00.start] |
232 | mov [ebx+0x08], ecx ;app_eip |
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233 | mov edx,[APP_HEADER_00.mem_size] |
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234 | mov [ebx+0x10], edx ;app_mem |
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235 | shr edx,1 |
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236 | sub edx,0x10 |
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237 | mov [ebx+0x0C], edx ;app_esp |
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238 | mov ecx,[APP_HEADER_00.i_param] |
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239 | mov [ebx], ecx ;app_cmdline |
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240 | mov [ebx+4], dword 0 ;app_path |
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269 | serge | 241 | mov edx, [APP_HEADER_00.i_end] |
242 | mov [ebx+0x14], edx |
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164 | serge | 243 | ret |
244 | |||
237 | serge | 245 | .check_01_header: |
164 | serge | 246 | |
237 | serge | 247 | cmp [eax+6],word '01' |
248 | jne .fail |
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249 | |||
250 | mov ecx,[APP_HEADER_01.start] |
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251 | mov [ebx+0x08], ecx ;app_eip |
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252 | mov edx,[APP_HEADER_01.mem_size] |
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253 | mov [ebx+0x10], edx ;app_mem |
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254 | mov ecx,[APP_HEADER_01.stack_top] |
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255 | mov [ebx+0x0C], ecx ;app_esp |
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256 | mov edx,[APP_HEADER_01.i_param] |
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257 | mov [ebx], edx ;app_cmdline |
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258 | mov ecx,[APP_HEADER_01.i_icon] |
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259 | mov [ebx+4], ecx ;app_path |
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269 | serge | 260 | mov edx, [APP_HEADER_01.i_end] |
261 | mov [ebx+0x14], edx |
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237 | serge | 262 | ret |
263 | .fail: |
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164 | serge | 264 | xor eax, eax |
265 | ret |
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266 | |||
267 | align 4 |
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268 | proc get_new_process_place |
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269 | ;input: |
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270 | ; none |
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271 | ;result: |
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272 | ; eax=[new_process_place]<>0 - ok |
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273 | ; 0 - failed. |
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274 | ;This function find least empty slot. |
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275 | ;It doesn't increase [TASK_COUNT]! |
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276 | mov eax,CURRENT_TASK |
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277 | mov ebx,[TASK_COUNT] |
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278 | inc ebx |
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279 | shl ebx,5 |
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280 | add ebx,eax ;ebx - address of process information for (last+1) slot |
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281 | .newprocessplace: |
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282 | ;eax = address of process information for current slot |
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283 | cmp eax,ebx |
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284 | jz .endnewprocessplace ;empty slot after high boundary |
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285 | add eax,0x20 |
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286 | cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty |
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287 | jnz .newprocessplace |
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288 | .endnewprocessplace: |
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289 | mov ebx,eax |
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290 | sub eax,CURRENT_TASK |
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291 | shr eax,5 ;calculate slot index |
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292 | cmp eax,256 |
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293 | jge .failed ;it should be <256 |
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294 | mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary) |
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295 | ; mov [new_process_place], eax |
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296 | ret |
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297 | |||
298 | .failed: |
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299 | xor eax,eax |
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300 | ret |
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301 | endp |
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302 | |||
269 | serge | 303 | |
164 | serge | 304 | align 4 |
269 | serge | 305 | proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword |
164 | serge | 306 | locals |
307 | app_pages dd ? |
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308 | img_pages dd ? |
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309 | dir_addr dd ? |
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310 | app_tabs dd ? |
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311 | endl |
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312 | |||
313 | stdcall wait_mutex, pg_data.pg_mutex |
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314 | |||
315 | xor eax, eax |
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316 | mov [dir_addr], eax |
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317 | |||
318 | mov eax, [app_size] |
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172 | serge | 319 | add eax, 4095 |
164 | serge | 320 | and eax, NOT(4095) |
321 | mov [app_size], eax |
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322 | mov ebx, eax |
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323 | shr eax, 12 |
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324 | mov [app_pages], eax |
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170 | serge | 325 | |
164 | serge | 326 | add ebx, 0x3FFFFF |
327 | and ebx, NOT(0x3FFFFF) |
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328 | shr ebx, 22 |
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329 | mov [app_tabs], ebx |
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330 | |||
170 | serge | 331 | mov ecx, [img_size] |
332 | add ecx, 4095 |
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333 | and ecx, NOT(4095) |
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164 | serge | 334 | |
170 | serge | 335 | mov [img_size], ecx |
336 | shr ecx, 12 |
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337 | mov [img_pages], ecx |
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164 | serge | 338 | |
170 | serge | 339 | if GREEDY_KERNEL |
340 | lea eax, [ecx+ebx+2] ;only image size |
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341 | else |
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342 | lea eax, [eax+ebx+2] ;all requested memory |
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343 | end if |
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344 | cmp eax, [pg_data.pages_free] |
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345 | ja .fail |
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346 | |||
164 | serge | 347 | call alloc_page |
348 | test eax, eax |
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349 | jz .fail |
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350 | mov [dir_addr], eax |
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351 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
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352 | |||
353 | mov esi, sys_pgdir |
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354 | mov edi, [tmp_task_pdir] |
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355 | mov ecx, 384 |
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356 | cld |
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357 | rep movsd |
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358 | |||
359 | mov ecx, 384 |
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360 | xor eax, eax |
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361 | cld |
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362 | rep stosd |
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363 | |||
364 | mov ecx, 256 |
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365 | mov esi, sys_pgdir+0xc00 |
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366 | rep movsd |
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367 | |||
188 | serge | 368 | mov eax, [dir_addr] |
164 | serge | 369 | or eax, PG_SW |
370 | mov ebx, [tmp_task_pdir] |
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371 | mov [ebx+0x600], eax |
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372 | |||
373 | mov eax, [dir_addr] |
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374 | call set_cr3 |
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375 | |||
376 | mov edx, [app_tabs] |
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377 | mov edi, new_app_base |
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378 | @@: |
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379 | call alloc_page |
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380 | test eax, eax |
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381 | jz .fail |
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382 | |||
188 | serge | 383 | stdcall map_page_table, edi, eax |
164 | serge | 384 | add edi, 0x00400000 |
385 | dec edx |
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386 | jnz @B |
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387 | |||
388 | mov edi, new_app_base |
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389 | shr edi, 10 |
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390 | add edi, pages_tab |
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269 | serge | 391 | |
164 | serge | 392 | mov ecx, [app_tabs] |
393 | shl ecx, 10 |
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394 | xor eax, eax |
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395 | rep stosd |
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396 | |||
269 | serge | 397 | mov ecx, [img_pages] |
398 | mov ebx, PG_UW |
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164 | serge | 399 | mov edx, new_app_base |
269 | serge | 400 | mov esi, [img_base] |
401 | mov edi, new_app_base |
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402 | shr esi, 10 |
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403 | shr edi, 10 |
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404 | add esi, pages_tab |
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405 | add edi, pages_tab |
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406 | .remap: |
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407 | lodsd |
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408 | or eax, ebx ; force user level r/w access |
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409 | stosd |
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410 | add edx, 0x1000 |
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411 | dec [app_pages] |
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412 | dec ecx |
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413 | jnz .remap |
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414 | |||
415 | mov ecx, [app_pages] |
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416 | test ecx, ecx |
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417 | jz .done |
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418 | |||
419 | if GREEDY_KERNEL |
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420 | mov eax, 0x02 |
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421 | .reserve: |
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422 | stosd |
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423 | invlpg [edx] |
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424 | add edx, 4096 |
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425 | dec ecx |
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426 | jnz .reserve |
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427 | else |
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428 | |||
164 | serge | 429 | .alloc: |
430 | call alloc_page |
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431 | test eax, eax |
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432 | jz .fail |
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433 | |||
434 | stdcall map_page,edx,eax,dword PG_UW |
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435 | add edx, 0x1000 |
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269 | serge | 436 | dec [app_pages] |
164 | serge | 437 | jnz .alloc |
438 | |||
269 | serge | 439 | end if |
164 | serge | 440 | |
269 | serge | 441 | .done: |
164 | serge | 442 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
443 | |||
444 | dec [pg_data.pg_mutex] |
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445 | mov eax, [dir_addr] |
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446 | ret |
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447 | .fail: |
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448 | dec [pg_data.pg_mutex] |
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449 | cmp [dir_addr], 0 |
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450 | jz @f |
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451 | stdcall destroy_app_space, [dir_addr] |
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452 | @@: |
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453 | xor eax, eax |
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454 | ret |
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455 | endp |
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456 | |||
269 | serge | 457 | |
458 | |||
164 | serge | 459 | align 4 |
460 | set_cr3: |
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461 | mov esi, [CURRENT_TASK] |
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462 | mov ebx, esi |
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463 | shl esi,8 |
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464 | mov [PROC_BASE+esi+0xB8],eax |
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465 | imul ebx,tss_step |
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466 | add ebx,tss_data |
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467 | mov [ebx+28], eax |
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468 | mov cr3, eax |
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469 | ret |
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470 | |||
471 | align 4 |
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472 | proc destroy_page_table stdcall, pg_tab:dword |
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473 | |||
474 | push esi |
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475 | |||
476 | mov esi, [pg_tab] |
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477 | mov ecx, 1024 |
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478 | .free: |
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479 | mov eax, [esi] |
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480 | test eax, 1 |
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481 | jz .next |
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482 | call free_page |
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483 | .next: |
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484 | add esi, 4 |
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485 | dec ecx |
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486 | jnz .free |
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487 | pop esi |
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488 | ret |
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489 | endp |
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490 | |||
491 | align 4 |
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492 | proc destroy_app_space stdcall, pg_dir:dword |
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493 | |||
494 | stdcall wait_mutex, pg_data.pg_mutex |
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495 | |||
496 | xor edx,edx |
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497 | mov eax,0x2 |
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498 | mov ebx, [pg_dir] |
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499 | |||
500 | .loop: |
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501 | ;eax = current slot of process |
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502 | mov ecx,eax |
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503 | shl ecx,5 |
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504 | cmp byte [CURRENT_TASK+ecx+0xa],9 ;if process running? |
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505 | jz @f ;skip empty slots |
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506 | shl ecx,3 |
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507 | cmp [PROC_BASE+ecx+0xB8],ebx ;compare page directory addresses |
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508 | jnz @f |
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509 | inc edx ;thread found |
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510 | @@: |
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511 | inc eax |
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512 | cmp eax,[TASK_COUNT] ;exit loop if we look through all processes |
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513 | jle .loop |
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514 | |||
515 | ;edx = number of threads |
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516 | ;our process is zombi so it isn't counted |
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517 | cmp edx,1 |
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518 | jg .exit |
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519 | ;if there isn't threads then clear memory. |
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520 | |||
521 | mov eax, [pg_dir] |
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522 | and eax, not 0xFFF |
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523 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
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524 | mov esi, [tmp_task_pdir] |
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188 | serge | 525 | add esi, 0x604 |
164 | serge | 526 | mov edi, 383 |
527 | .destroy: |
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528 | mov eax, [esi] |
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529 | test eax, 1 |
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530 | jz .next |
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531 | and eax, not 0xFFF |
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532 | stdcall map_page,[tmp_task_ptab],eax,dword PG_SW |
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533 | stdcall destroy_page_table, [tmp_task_ptab] |
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534 | mov eax, [esi] |
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535 | call free_page |
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536 | .next: |
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537 | add esi, 4 |
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538 | dec edi |
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539 | jnz .destroy |
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540 | |||
541 | mov eax, [pg_dir] |
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542 | call free_page |
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543 | .exit: |
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544 | stdcall map_page,[tmp_task_ptab],dword 0,dword PG_UNMAP |
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545 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
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546 | dec [pg_data.pg_mutex] |
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547 | ret |
||
548 | endp |
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549 | |||
550 | align 4 |
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551 | proc fs_execute |
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552 | |||
553 | ;fn_read:dword, file_size:dword, cluster:dword |
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554 | |||
555 | ; ebx - cmdline |
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556 | ; edx - flags |
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557 | ; ebp - full filename |
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558 | ; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it |
||
559 | |||
560 | locals |
||
561 | cmdline dd ? |
||
562 | flags dd ? |
||
563 | filename dd ? |
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564 | retval dd ? |
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565 | endl |
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566 | |||
567 | pushad |
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568 | |||
569 | mov [cmdline], ebx |
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570 | mov [flags], edx |
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571 | mov eax, [ebp] |
||
572 | mov [filename], eax |
||
573 | |||
574 | stdcall wait_mutex, pg_data.tmp_task_mutex |
||
575 | |||
576 | mov edi, [tmp_task_data] |
||
269 | serge | 577 | mov ecx, (1024+256)/4 |
164 | serge | 578 | xor eax, eax |
579 | rep stosd |
||
580 | |||
581 | mov esi, [filename] |
||
582 | mov edi, [tmp_task_data] |
||
583 | mov ecx, 1024 |
||
584 | rep movsb |
||
585 | |||
586 | mov esi, [cmdline] |
||
587 | test esi, esi |
||
588 | jz @f |
||
589 | mov ecx, 256 |
||
590 | rep movsb |
||
591 | @@: |
||
269 | serge | 592 | mov eax, [tmp_task_data] |
593 | lea ebx, [eax+1024] ;cmd line |
||
164 | serge | 594 | |
269 | serge | 595 | stdcall fs_exec, eax, ebx, [flags] |
237 | serge | 596 | |
164 | serge | 597 | mov [retval], eax |
598 | popad |
||
599 | mov [pg_data.tmp_task_mutex], 0 |
||
600 | mov eax, [retval] |
||
601 | ret |
||
602 | |||
603 | endp |
||
604 | |||
605 | |||
606 | pid_to_slot: |
||
607 | ;Input: |
||
608 | ; eax - pid of process |
||
609 | ;Output: |
||
610 | ; eax - slot of process or 0 if process don't exists |
||
611 | ;Search process by PID. |
||
612 | push ebx |
||
613 | push ecx |
||
614 | mov ebx,[TASK_COUNT] |
||
615 | shl ebx,5 |
||
616 | mov ecx,2*32 |
||
617 | |||
618 | .loop: |
||
619 | ;ecx=offset of current process info entry |
||
620 | ;ebx=maximum permitted offset |
||
621 | cmp byte [CURRENT_TASK+ecx+0xa],9 |
||
622 | jz .endloop ;skip empty slots |
||
623 | cmp [CURRENT_TASK+ecx+0x4],eax ;check PID |
||
624 | jz .pid_found |
||
625 | .endloop: |
||
626 | add ecx,32 |
||
627 | cmp ecx,ebx |
||
628 | jle .loop |
||
629 | |||
630 | pop ecx |
||
631 | pop ebx |
||
632 | xor eax,eax |
||
633 | ret |
||
634 | |||
635 | .pid_found: |
||
636 | shr ecx,5 |
||
637 | mov eax,ecx ;convert offset to index of slot |
||
638 | pop ecx |
||
639 | pop ebx |
||
640 | ret |
||
641 | |||
642 | check_region: |
||
643 | ;input: |
||
644 | ; ebx - start of buffer |
||
645 | ; ecx - size of buffer |
||
646 | ;result: |
||
647 | ; eax = 1 region lays in app memory |
||
648 | ; eax = 0 region don't lays in app memory |
||
649 | mov eax,[CURRENT_TASK] |
||
650 | jmp check_process_region |
||
651 | ;----------------------------------------------------------------------------- |
||
652 | check_process_region: |
||
653 | ;input: |
||
654 | ; eax - slot |
||
655 | ; ebx - start of buffer |
||
656 | ; ecx - size of buffer |
||
657 | ;result: |
||
658 | ; eax = 1 region lays in app memory |
||
659 | ; eax = 0 region don't lays in app memory |
||
660 | |||
661 | test ecx,ecx |
||
662 | jle .ok |
||
663 | shl eax,5 |
||
664 | cmp word [CURRENT_TASK+eax+0xa],0 |
||
665 | jnz .failed |
||
666 | shl eax,3 |
||
667 | mov eax,[PROC_BASE+eax+0xb8] |
||
668 | test eax,eax |
||
669 | jz .failed |
||
670 | |||
671 | mov eax,1 |
||
672 | ret |
||
673 | |||
674 | |||
675 | ; call MEM_Get_Linear_Address |
||
676 | ; push ebx |
||
677 | ; push ecx |
||
678 | ; push edx |
||
679 | ; mov edx,ebx |
||
680 | ; and edx,not (4096-1) |
||
681 | ; sub ebx,edx |
||
682 | ; add ecx,ebx |
||
683 | ; mov ebx,edx |
||
684 | ; add ecx,(4096-1) |
||
685 | ; and ecx,not (4096-1) |
||
686 | ;.loop: |
||
687 | ;;eax - linear address of page directory |
||
688 | ;;ebx - current page |
||
689 | ;;ecx - current size |
||
690 | ; mov edx,ebx |
||
691 | ; shr edx,22 |
||
692 | ; mov edx,[eax+4*edx] |
||
693 | ; and edx,not (4096-1) |
||
694 | ; test edx,edx |
||
695 | ; jz .failed1 |
||
696 | ; push eax |
||
697 | ; mov eax,edx |
||
698 | ; call MEM_Get_Linear_Address |
||
699 | ; mov edx,ebx |
||
700 | ; shr edx,12 |
||
701 | ; and edx,(1024-1) |
||
702 | ; mov eax,[eax+4*edx] |
||
703 | ; and eax,not (4096-1) |
||
704 | ; test eax,eax |
||
705 | ; pop eax |
||
706 | ; jz .failed1 |
||
707 | ; add ebx,4096 |
||
708 | ; sub ecx,4096 |
||
709 | ; jg .loop |
||
710 | ; pop edx |
||
711 | ; pop ecx |
||
712 | ; pop ebx |
||
713 | .ok: |
||
714 | mov eax,1 |
||
715 | ret |
||
716 | ; |
||
717 | ;.failed1: |
||
718 | ; pop edx |
||
719 | ; pop ecx |
||
720 | ; pop ebx |
||
721 | .failed: |
||
722 | xor eax,eax |
||
723 | ret |
||
724 | |||
725 | align 4 |
||
726 | proc read_process_memory |
||
727 | ;Input: |
||
728 | ; eax - process slot |
||
729 | ; ebx - buffer address |
||
730 | ; ecx - buffer size |
||
731 | ; edx - start address in other process |
||
732 | ;Output: |
||
733 | ; eax - number of bytes read. |
||
734 | locals |
||
735 | slot dd ? |
||
736 | buff dd ? |
||
737 | r_count dd ? |
||
738 | offset dd ? |
||
739 | tmp_r_cnt dd ? |
||
740 | endl |
||
741 | |||
742 | mov [slot], eax |
||
743 | mov [buff], ebx |
||
744 | mov [r_count], ecx |
||
745 | mov [tmp_r_cnt], ecx |
||
746 | mov [offset], edx |
||
747 | |||
748 | pushad |
||
749 | .read_mem: |
||
750 | mov edx, [offset] |
||
751 | mov ebx, [tmp_r_cnt] |
||
752 | |||
753 | mov ecx, 0x400000 |
||
754 | and edx, 0x3FFFFF |
||
755 | sub ecx, edx |
||
756 | cmp ecx, ebx |
||
757 | jbe @f |
||
758 | mov ecx, ebx |
||
759 | @@: |
||
760 | cmp ecx, 0x8000 |
||
761 | jna @F |
||
762 | mov ecx, 0x8000 |
||
763 | @@: |
||
764 | mov eax, [slot] |
||
765 | shl eax,8 |
||
766 | mov ebx, [offset] |
||
767 | add ebx, new_app_base |
||
768 | push ecx |
||
769 | stdcall map_memEx, [proc_mem_map],\ |
||
770 | [PROC_BASE+eax+0xB8],\ |
||
771 | ebx, ecx |
||
772 | pop ecx |
||
773 | |||
774 | mov esi, [offset] |
||
775 | and esi, 0xfff |
||
776 | add esi, [proc_mem_map] |
||
777 | mov edi, [buff] |
||
778 | mov edx, ecx |
||
779 | rep movsb |
||
780 | |||
781 | add [offset], edx |
||
782 | sub [tmp_r_cnt], edx |
||
783 | jnz .read_mem |
||
784 | |||
785 | popad |
||
786 | mov eax, [r_count] |
||
787 | ret |
||
788 | endp |
||
789 | |||
790 | align 4 |
||
791 | proc write_process_memory |
||
792 | ;Input: |
||
793 | ; eax - process slot |
||
794 | ; ebx - buffer address |
||
795 | ; ecx - buffer size |
||
796 | ; edx - start address in other process |
||
797 | ;Output: |
||
798 | ; eax - number of bytes written |
||
799 | |||
800 | locals |
||
801 | slot dd ? |
||
802 | buff dd ? |
||
803 | w_count dd ? |
||
804 | offset dd ? |
||
805 | tmp_w_cnt dd ? |
||
806 | endl |
||
807 | |||
808 | mov [slot], eax |
||
809 | mov [buff], ebx |
||
810 | mov [w_count], ecx |
||
811 | mov [tmp_w_cnt], ecx |
||
812 | mov [offset], edx |
||
813 | |||
814 | pushad |
||
815 | .read_mem: |
||
816 | mov edx, [offset] |
||
817 | mov ebx, [tmp_w_cnt] |
||
818 | |||
819 | mov ecx, 0x400000 |
||
820 | and edx, 0x3FFFFF |
||
821 | sub ecx, edx |
||
822 | cmp ecx, ebx |
||
823 | jbe @f |
||
824 | mov ecx, ebx |
||
825 | @@: |
||
826 | cmp ecx, 0x8000 |
||
827 | jna @F |
||
828 | mov ecx, 0x8000 |
||
829 | @@: |
||
830 | mov eax, [slot] |
||
831 | shl eax,8 |
||
832 | mov ebx, [offset] |
||
833 | add ebx, new_app_base |
||
834 | push ecx |
||
835 | stdcall map_memEx, [proc_mem_map],\ |
||
836 | [PROC_BASE+eax+0xB8],\ |
||
837 | ebx, ecx |
||
838 | pop ecx |
||
839 | |||
840 | mov edi, [offset] |
||
841 | and edi, 0xfff |
||
842 | add edi, [proc_mem_map] |
||
843 | mov esi, [buff] |
||
844 | mov edx, ecx |
||
845 | rep movsb |
||
846 | |||
847 | add [offset], edx |
||
848 | sub [tmp_w_cnt], edx |
||
849 | jnz .read_mem |
||
850 | |||
851 | popad |
||
852 | mov eax, [w_count] |
||
853 | ret |
||
854 | endp |
||
855 | |||
856 | align 4 |
||
857 | proc new_sys_threads |
||
858 | locals |
||
859 | slot dd ? |
||
237 | serge | 860 | app_cmdline dd ? ;0x00 |
861 | app_path dd ? ;0x04 |
||
862 | app_eip dd ? ;0x08 |
||
863 | app_esp dd ? ;0x0C |
||
864 | app_mem dd ? ;0x10 |
||
164 | serge | 865 | endl |
866 | |||
237 | serge | 867 | cmp eax,1 |
868 | jne .failed ;other subfunctions |
||
164 | serge | 869 | |
237 | serge | 870 | xor eax,eax |
871 | mov [app_cmdline], eax |
||
872 | mov [app_path], eax |
||
873 | mov [app_eip], ebx |
||
874 | mov [app_esp], ecx |
||
164 | serge | 875 | |
876 | mov esi,new_process_loading |
||
877 | call sys_msg_board_str |
||
878 | .wait_lock: |
||
879 | cmp [application_table_status],0 |
||
880 | je .get_lock |
||
881 | call change_task |
||
882 | jmp .wait_lock |
||
883 | |||
884 | .get_lock: |
||
885 | mov eax, 1 |
||
886 | xchg eax, [application_table_status] |
||
887 | cmp eax, 0 |
||
888 | jne .wait_lock |
||
889 | |||
890 | call set_application_table_status |
||
891 | |||
892 | call get_new_process_place |
||
893 | test eax, eax |
||
894 | jz .failed |
||
895 | |||
896 | mov [slot], eax |
||
897 | |||
898 | mov esi,[CURRENT_TASK] |
||
899 | shl esi,8 |
||
900 | add esi,PROC_BASE |
||
237 | serge | 901 | mov ebx,esi ;ebx=esi - pointer to extended information about current thread |
164 | serge | 902 | |
237 | serge | 903 | mov edi, eax |
164 | serge | 904 | shl edi,8 |
905 | add edi,PROC_BASE |
||
237 | serge | 906 | mov edx,edi ;edx=edi - pointer to extended infomation about new thread |
164 | serge | 907 | mov ecx,256/4 |
237 | serge | 908 | xor eax, eax |
909 | cld |
||
910 | rep stosd ;clean extended information about new thread |
||
911 | mov esi,ebx |
||
164 | serge | 912 | mov edi,edx |
913 | mov ecx,11 |
||
237 | serge | 914 | rep movsb ;copy process name |
164 | serge | 915 | |
237 | serge | 916 | mov eax,[ebx+APPDATA.heap_base] |
917 | mov [edx+APPDATA.heap_base], eax |
||
164 | serge | 918 | |
237 | serge | 919 | mov ecx,[ebx+APPDATA.heap_top] |
920 | mov [edx+APPDATA.heap_top], ecx |
||
921 | |||
922 | mov eax,[ebx+APPDATA.mem_size] |
||
923 | mov [edx+APPDATA.mem_size], eax |
||
924 | |||
925 | mov ecx,[ebx+APPDATA.dir_table] |
||
926 | mov [edx+APPDATA.dir_table],ecx ;copy page directory |
||
927 | |||
928 | lea eax, [app_cmdline] |
||
929 | stdcall set_app_params ,[slot],eax,dword 0,\ |
||
930 | dword 0,dword 0 |
||
931 | |||
164 | serge | 932 | mov esi,new_process_running |
933 | call sys_msg_board_str ;output information about succefull startup |
||
934 | |||
935 | mov [application_table_status],0 ;unlock application_table_status mutex |
||
936 | mov eax,[process_number] ;set result |
||
937 | ret |
||
938 | .failed: |
||
939 | mov [application_table_status],0 |
||
940 | mov eax,-1 |
||
941 | ret |
||
942 | endp |
||
943 | |||
944 | align 4 |
||
945 | proc wait_mutex stdcall, mutex:dword |
||
946 | mov ebx, [mutex] |
||
947 | .wait_lock: |
||
948 | cmp dword [ebx],0 |
||
949 | je .get_lock |
||
950 | push ebx |
||
951 | call change_task |
||
952 | pop ebx |
||
953 | jmp .wait_lock |
||
954 | |||
955 | .get_lock: |
||
956 | mov eax, 1 |
||
957 | xchg eax, [ebx] |
||
958 | test eax, eax |
||
959 | jnz .wait_lock |
||
960 | ret |
||
961 | endp |
||
962 | |||
237 | serge | 963 | align 4 |
964 | proc set_app_params stdcall,slot:dword, params:dword,\ |
||
965 | cmd_line:dword, app_path:dword, flags:dword |
||
164 | serge | 966 | |
237 | serge | 967 | mov edi, [slot] |
968 | mov esi, [fpu_data] |
||
969 | bt [cpu_caps], CAPS_SSE |
||
970 | jnc .no_SSE |
||
971 | |||
972 | shl edi, 8 |
||
973 | mov eax, edi |
||
974 | lea edi, [esi+edi*2] |
||
975 | mov [eax+PROC_BASE+APPDATA.fpu_state], edi |
||
976 | mov [eax+PROC_BASE+APPDATA.fpu_handler], 0 |
||
977 | mov [eax+PROC_BASE+APPDATA.sse_handler], 0 |
||
978 | mov ecx, 512/4 |
||
979 | jmp @F |
||
980 | .no_SSE: |
||
981 | mov eax, edi |
||
982 | shl eax, 8 |
||
983 | mov ebx, edi |
||
984 | shl edi, 7 |
||
985 | shl ebx, 4 |
||
986 | sub edi, ebx ;edi*=112 |
||
987 | add edi, esi |
||
988 | mov [eax+PROC_BASE+APPDATA.fpu_state], edi |
||
989 | mov [eax+PROC_BASE+APPDATA.fpu_handler], 0 |
||
990 | mov [eax+PROC_BASE+APPDATA.sse_handler], 0 |
||
991 | mov ecx, 112/4 |
||
992 | @@: |
||
993 | rep movsd |
||
994 | |||
995 | mov ebx,[slot] |
||
996 | cmp ebx,[TASK_COUNT] |
||
997 | jle .noinc |
||
998 | inc dword [TASK_COUNT] ;update number of processes |
||
999 | .noinc: |
||
1000 | shl ebx,8 |
||
1001 | mov ecx, [def_cursor] |
||
1002 | mov [PROC_BASE+APPDATA.cursor+ebx],ecx |
||
1003 | |||
1004 | shr ebx,3 |
||
1005 | mov eax, new_app_base |
||
1006 | mov dword [CURRENT_TASK+ebx+0x10],eax |
||
1007 | |||
1008 | .add_command_line: |
||
1009 | mov edx,[params] |
||
1010 | mov edx,[edx] ;app_cmdline |
||
1011 | test edx,edx |
||
1012 | jz @F ;application don't need parameters |
||
262 | diamond | 1013 | mov eax, edx |
1014 | add eax, 256 |
||
1015 | jc @f |
||
1016 | cmp eax, [PROC_BASE+APPDATA.mem_size+ebx*8] |
||
1017 | ja @f |
||
237 | serge | 1018 | add edx, new_app_base |
262 | diamond | 1019 | stdcall k_strncpy, edx, [cmd_line], 256 |
237 | serge | 1020 | @@: |
1021 | mov edx,[params] |
||
1022 | mov edx, [edx+4] ;app_path |
||
1023 | test edx,edx |
||
1024 | jz @F ;application don't need path of file |
||
262 | diamond | 1025 | mov eax, edx |
1026 | add eax, 1024 |
||
1027 | jc @f |
||
1028 | cmp eax, [PROC_BASE+APPDATA.mem_size+ebx*8] |
||
1029 | ja @f |
||
237 | serge | 1030 | add edx, new_app_base |
262 | diamond | 1031 | stdcall k_strncpy, edx, [app_path], 1024 |
237 | serge | 1032 | @@: |
1033 | mov ebx,[slot] |
||
1034 | mov eax,ebx |
||
1035 | shl ebx,5 |
||
1036 | ; set window state to 'normal' (non-minimized/maximized/rolled-up) state |
||
1037 | mov [ebx+window_data+WDATA.fl_wstate], WSTATE_NORMAL |
||
1038 | mov [ebx+window_data+WDATA.fl_redraw], 1 |
||
1039 | add ebx,CURRENT_TASK ;ebx - pointer to information about process |
||
1040 | mov [ebx+TASKDATA.wnd_number],al;set window number on screen = process slot |
||
1041 | |||
1042 | mov [ebx+TASKDATA.event_mask],dword 1+2+4 ;set default event flags (see 40 function) |
||
1043 | |||
1044 | inc dword [process_number] |
||
1045 | mov eax,[process_number] |
||
1046 | mov [ebx+4],eax ;set PID |
||
1047 | |||
1048 | mov ecx,ebx |
||
1049 | add ecx,(draw_data-CURRENT_TASK) ;ecx - pointer to draw data |
||
1050 | ;set draw data to full screen |
||
1051 | |||
1052 | mov [ecx+0],dword 0 |
||
1053 | mov [ecx+4],dword 0 |
||
1054 | mov eax,[SCR_X_SIZE] |
||
1055 | mov [ecx+8],eax |
||
1056 | mov eax,[SCR_Y_SIZE] |
||
1057 | mov [ecx+12],eax |
||
1058 | |||
1059 | mov edi,[slot] |
||
1060 | imul edi,tss_step |
||
1061 | add edi,tss_data |
||
1062 | mov ecx,128/4 |
||
1063 | xor eax, eax |
||
1064 | cld |
||
1065 | rep stosd |
||
1066 | ;Add IO access table - bit array of permitted ports |
||
1067 | not eax |
||
1068 | mov ecx,2048 |
||
1069 | rep stosd ; access to 4096*8=65536 ports |
||
1070 | sub edi, tss_step |
||
1071 | |||
1072 | ;set cr3 register in TSS of application |
||
1073 | mov ecx, [slot] |
||
1074 | shl ecx, 8 |
||
1075 | mov eax,[PROC_BASE+ecx+APPDATA.dir_table] |
||
1076 | mov [edi+TSS._cr3],eax |
||
1077 | |||
1078 | mov esi,[params] |
||
1079 | mov eax, [esi+0x08] ;app_eip |
||
1080 | mov [edi+TSS._eip],eax ;set eip in TSS |
||
1081 | mov eax, [esi+0x0C] ;app_esp |
||
1082 | mov [edi+TSS._esp],eax ;set stack in TSS |
||
269 | serge | 1083 | mov [edi+TSS._eflags],dword 0x3202 |
237 | serge | 1084 | |
1085 | mov [edi+TSS._cs],app_code ;selector of code segment |
||
1086 | mov [edi+TSS._ss],app_data |
||
1087 | mov [edi+TSS._ds],app_data |
||
1088 | mov [edi+TSS._es],app_data |
||
1089 | mov [edi+TSS._fs],app_data |
||
1090 | mov [edi+TSS._gs],graph_data ;selector of graphic segment |
||
1091 | mov [edi+TSS._io],word 128 |
||
1092 | mov [edi+TSS._ss0], os_data |
||
1093 | mov ebx,[slot] |
||
1094 | shl ebx,12 |
||
1095 | add ebx,sysint_stack_data+4096 |
||
1096 | mov [edi+TSS._esp0],ebx |
||
1097 | |||
1098 | mov ecx, edi ;ecx - address of application TSS |
||
1099 | mov ebx,[slot] |
||
1100 | shl ebx,3 |
||
1101 | ;set TSS descriptor |
||
1102 | mov [ebx+gdts+tss0+0],word tss_step ;limit (size) |
||
1103 | mov [ebx+gdts+tss0+2],cx ;part of offset |
||
1104 | shr ecx,16 |
||
1105 | mov [ebx+gdts+tss0+4],cl ;part of offset |
||
1106 | mov [ebx+gdts+tss0+7],ch ;part of offset |
||
1107 | mov [ebx+gdts+tss0+5],word 01010000b*256+11101001b ;system flags |
||
1108 | |||
1109 | ;flush keyboard and buttons queue |
||
1110 | mov [KEY_COUNT],byte 0 |
||
1111 | mov [BTN_COUNT],byte 0 |
||
1112 | |||
1113 | mov edi,[slot] |
||
1114 | shl edi,5 |
||
1115 | add edi,window_data |
||
1116 | mov ebx,[slot] |
||
1117 | movzx esi,word [WIN_STACK+ebx*2] |
||
1118 | lea esi,[WIN_POS+esi*2] |
||
1119 | call windowactivate ;gui initialization |
||
1120 | |||
1121 | mov ebx,[slot] |
||
1122 | shl ebx,5 |
||
1123 | mov [CURRENT_TASK+ebx+0xa],byte 0 ;set process state - running |
||
1124 | ; set if debuggee |
||
1125 | mov eax, [flags] |
||
1126 | test byte [flags], 1 |
||
1127 | jz .no_debug |
||
1128 | mov [CURRENT_TASK+ebx+0xa],byte 1 ;set process state - suspended |
||
1129 | mov eax,[CURRENT_TASK] |
||
1130 | mov [PROC_BASE+ebx*8+0xac],eax ;set debugger PID - current |
||
1131 | .no_debug: |
||
1132 | mov esi,new_process_running |
||
1133 | call sys_msg_board_str ;output information about succefull startup |
||
1134 | ret |
||
1135 | endp |
||
1136 | |||
1137 | |||
1138 | |||
164 | serge | 1139 | include "debug.inc" |
1140 | |||
1141 | iglobal |
||
1142 | new_process_loading db 'K : New Process - loading',13,10,0 |
||
1143 | new_process_running db 'K : New Process - done',13,10,0 |
||
1144 | start_not_enough_memory db 'K : New Process - not enough memory',13,10,0 |
||
1145 | endg256 |
||
1146 |