Rev 380 | Rev 392 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
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357 | 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 | |||
363 | serge | 74 | |
164 | serge | 75 | align 4 |
363 | serge | 76 | proc fs_execute |
77 | |||
78 | ;fn_read:dword, file_size:dword, cluster:dword |
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79 | |||
80 | ; ebx - cmdline |
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81 | ; edx - flags |
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82 | ; ebp - full filename |
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83 | ; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it |
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84 | |||
237 | serge | 85 | locals |
363 | serge | 86 | cmdline rd 64 ;256/4 |
87 | filename rd 256 ;1024/4 |
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88 | flags dd ? |
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89 | |||
237 | serge | 90 | save_cr3 dd ? |
91 | slot dd ? |
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92 | slot_base dd ? |
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93 | file_base dd ? |
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94 | file_size dd ? |
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363 | serge | 95 | ;app header data |
96 | hdr_cmdline dd ? ;0x00 |
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97 | hdr_path dd ? ;0x04 |
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98 | hdr_eip dd ? ;0x08 |
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99 | hdr_esp dd ? ;0x0C |
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100 | hdr_mem dd ? ;0x10 |
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101 | hdr_i_end dd ? ;0x14 |
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237 | serge | 102 | endl |
164 | serge | 103 | |
363 | serge | 104 | pushad |
105 | |||
106 | mov [cmdline], ebx |
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107 | mov [flags], edx |
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108 | |||
109 | ; [ebp] pointer to filename |
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110 | |||
111 | lea eax, [filename] |
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112 | mov dword [eax+1020],0 ;force terminate |
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113 | ;string |
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114 | stdcall k_strncpy, eax, [ebp], 1023 |
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115 | |||
116 | lea eax, [cmdline] |
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117 | mov dword [eax+252], 0 |
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118 | stdcall k_strncpy, eax, [cmdline], 255 |
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119 | |||
120 | lea eax, [filename] |
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121 | stdcall load_file, eax |
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237 | serge | 122 | mov ecx, -ERROR_FILE_NOT_FOUND |
123 | test eax, eax |
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247 | serge | 124 | jz .err_file |
237 | serge | 125 | |
126 | mov [file_base], eax |
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127 | mov [file_size], ebx |
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128 | |||
363 | serge | 129 | lea ebx, [hdr_cmdline] |
237 | serge | 130 | call test_app_header |
131 | mov ecx, -0x1F |
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132 | test eax, eax |
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247 | serge | 133 | jz .err_hdr |
237 | serge | 134 | |
135 | mov esi, new_process_loading |
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136 | call sys_msg_board_str ; write message to message board |
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137 | |||
138 | .wait_lock: |
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139 | cmp [application_table_status],0 |
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140 | je .get_lock |
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141 | call change_task |
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142 | jmp .wait_lock |
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143 | |||
144 | .get_lock: |
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145 | mov eax, 1 |
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146 | xchg eax, [application_table_status] |
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147 | cmp eax, 0 |
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148 | jne .wait_lock |
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149 | |||
363 | serge | 150 | ; pushfd |
151 | ; cli |
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269 | serge | 152 | |
237 | serge | 153 | call set_application_table_status |
154 | |||
155 | call get_new_process_place |
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156 | test eax, eax |
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157 | mov ecx, -0x20 ; too many processes |
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269 | serge | 158 | jz .err |
237 | serge | 159 | |
160 | mov [slot], eax |
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161 | shl eax, 8 |
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380 | serge | 162 | add eax, SLOT_BASE |
237 | serge | 163 | mov [slot_base], eax |
164 | mov edi, eax |
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165 | _clear_ 256 ;clean extended information about process |
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166 | |||
167 | ; write application name |
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363 | serge | 168 | lea edi, [filename] |
237 | serge | 169 | mov al, '/' |
170 | call k_strrchr ; now eax points to name without path |
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171 | |||
172 | lea esi, [eax+1] |
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173 | test eax, eax |
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174 | jnz @F |
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363 | serge | 175 | lea esi, [filename] |
237 | serge | 176 | @@: |
177 | mov ecx, 8 ; 8 chars for name |
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178 | mov edi, [slot_base] |
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179 | .copy_process_name_loop: |
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180 | lodsb |
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181 | cmp al, '.' |
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182 | jz .copy_process_name_done |
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183 | test al, al |
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184 | jz .copy_process_name_done |
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185 | stosb |
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186 | loop .copy_process_name_loop |
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187 | .copy_process_name_done: |
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188 | |||
189 | mov ebx, cr3 |
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190 | mov [save_cr3], ebx |
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269 | serge | 191 | |
363 | serge | 192 | stdcall create_app_space,[hdr_mem],[file_base],[file_size] |
364 | diamond | 193 | mov ecx, -30 ; no memory |
237 | serge | 194 | test eax, eax |
195 | jz .failed |
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196 | |||
197 | mov ebx,[slot_base] |
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198 | mov [ebx+APPDATA.dir_table],eax |
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363 | serge | 199 | mov eax,[hdr_mem] |
237 | serge | 200 | mov [ebx+APPDATA.mem_size],eax |
201 | |||
357 | serge | 202 | if GREEDY_KERNEL |
203 | else |
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363 | serge | 204 | mov ecx, [hdr_mem] |
269 | serge | 205 | mov edi, [file_size] |
206 | add edi, 4095 |
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207 | and edi, not 4095 |
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208 | sub ecx, edi |
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209 | jna @F |
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210 | |||
211 | xor eax, eax |
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212 | add edi, new_app_base |
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237 | serge | 213 | cld |
269 | serge | 214 | rep stosb |
247 | serge | 215 | @@: |
269 | serge | 216 | end if |
217 | |||
218 | ; release only virtual space, not phisical memory |
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219 | |||
220 | stdcall free_kernel_space, [file_base] |
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363 | serge | 221 | lea eax, [hdr_cmdline] |
222 | lea ebx, [cmdline] |
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223 | lea ecx, [filename] |
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224 | stdcall set_app_params ,[slot],eax,ebx,ecx,[flags] |
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237 | serge | 225 | |
226 | mov eax, [save_cr3] |
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227 | call set_cr3 |
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228 | |||
363 | serge | 229 | ; popfd |
247 | serge | 230 | xor ebx, ebx |
231 | mov [application_table_status],ebx ;unlock application_table_status mutex |
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232 | mov eax,[process_number] ;set result |
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164 | serge | 233 | ret |
237 | serge | 234 | .failed: |
235 | mov eax, [save_cr3] |
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236 | call set_cr3 |
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269 | serge | 237 | .err: |
363 | serge | 238 | ; popfd |
247 | serge | 239 | .err_hdr: |
240 | stdcall kernel_free,[file_base] |
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241 | .err_file: |
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237 | serge | 242 | xor eax, eax |
243 | mov [application_table_status],eax |
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321 | diamond | 244 | mov eax, ecx |
237 | serge | 245 | ret |
246 | endp |
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164 | serge | 247 | |
237 | serge | 248 | align 4 |
249 | test_app_header: |
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250 | virtual at eax |
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251 | APP_HEADER_00 APP_HEADER_00 |
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252 | end virtual |
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253 | virtual at eax |
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164 | serge | 254 | APP_HEADER_01 APP_HEADER_01 |
255 | end virtual |
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256 | |||
237 | serge | 257 | cmp dword [eax], 'MENU' |
258 | jne .fail |
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259 | cmp word [eax+4],'ET' |
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260 | jne .fail |
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164 | serge | 261 | |
237 | serge | 262 | cmp [eax+6], word '00' |
263 | jne .check_01_header |
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164 | serge | 264 | |
237 | serge | 265 | mov ecx,[APP_HEADER_00.start] |
266 | mov [ebx+0x08], ecx ;app_eip |
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267 | mov edx,[APP_HEADER_00.mem_size] |
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268 | mov [ebx+0x10], edx ;app_mem |
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269 | shr edx,1 |
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270 | sub edx,0x10 |
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271 | mov [ebx+0x0C], edx ;app_esp |
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272 | mov ecx,[APP_HEADER_00.i_param] |
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273 | mov [ebx], ecx ;app_cmdline |
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274 | mov [ebx+4], dword 0 ;app_path |
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269 | serge | 275 | mov edx, [APP_HEADER_00.i_end] |
276 | mov [ebx+0x14], edx |
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164 | serge | 277 | ret |
278 | |||
237 | serge | 279 | .check_01_header: |
164 | serge | 280 | |
237 | serge | 281 | cmp [eax+6],word '01' |
282 | jne .fail |
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283 | |||
284 | mov ecx,[APP_HEADER_01.start] |
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285 | mov [ebx+0x08], ecx ;app_eip |
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286 | mov edx,[APP_HEADER_01.mem_size] |
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381 | serge | 287 | |
288 | ; \begin{diamond}[20.08.2006] |
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289 | ; sanity check (functions 19,58 load app_i_end bytes and that must |
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290 | ; fit in allocated memory to prevent kernel faults) |
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291 | cmp edx,[APP_HEADER_01.i_end] |
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292 | jb .fail |
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293 | ; \end{diamond}[20.08.2006] |
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294 | |||
237 | serge | 295 | mov [ebx+0x10], edx ;app_mem |
296 | mov ecx,[APP_HEADER_01.stack_top] |
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297 | mov [ebx+0x0C], ecx ;app_esp |
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298 | mov edx,[APP_HEADER_01.i_param] |
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299 | mov [ebx], edx ;app_cmdline |
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300 | mov ecx,[APP_HEADER_01.i_icon] |
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301 | mov [ebx+4], ecx ;app_path |
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269 | serge | 302 | mov edx, [APP_HEADER_01.i_end] |
303 | mov [ebx+0x14], edx |
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237 | serge | 304 | ret |
305 | .fail: |
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164 | serge | 306 | xor eax, eax |
307 | ret |
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308 | |||
309 | align 4 |
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310 | proc get_new_process_place |
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311 | ;input: |
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312 | ; none |
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313 | ;result: |
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314 | ; eax=[new_process_place]<>0 - ok |
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315 | ; 0 - failed. |
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316 | ;This function find least empty slot. |
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317 | ;It doesn't increase [TASK_COUNT]! |
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318 | mov eax,CURRENT_TASK |
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319 | mov ebx,[TASK_COUNT] |
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320 | inc ebx |
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321 | shl ebx,5 |
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322 | add ebx,eax ;ebx - address of process information for (last+1) slot |
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323 | .newprocessplace: |
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324 | ;eax = address of process information for current slot |
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325 | cmp eax,ebx |
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326 | jz .endnewprocessplace ;empty slot after high boundary |
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327 | add eax,0x20 |
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328 | cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty |
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329 | jnz .newprocessplace |
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330 | .endnewprocessplace: |
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331 | mov ebx,eax |
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332 | sub eax,CURRENT_TASK |
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333 | shr eax,5 ;calculate slot index |
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334 | cmp eax,256 |
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335 | jge .failed ;it should be <256 |
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336 | mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary) |
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337 | ; mov [new_process_place], eax |
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338 | ret |
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339 | |||
340 | .failed: |
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341 | xor eax,eax |
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342 | ret |
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343 | endp |
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344 | |||
345 | align 4 |
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269 | serge | 346 | proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword |
164 | serge | 347 | locals |
348 | app_pages dd ? |
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349 | img_pages dd ? |
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350 | dir_addr dd ? |
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351 | app_tabs dd ? |
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352 | endl |
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353 | |||
276 | serge | 354 | mov ebx, pg_data.pg_mutex |
355 | call wait_mutex ;ebx |
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164 | serge | 356 | |
357 | xor eax, eax |
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358 | mov [dir_addr], eax |
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359 | |||
360 | mov eax, [app_size] |
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172 | serge | 361 | add eax, 4095 |
164 | serge | 362 | and eax, NOT(4095) |
363 | mov [app_size], eax |
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364 | mov ebx, eax |
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365 | shr eax, 12 |
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366 | mov [app_pages], eax |
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170 | serge | 367 | |
164 | serge | 368 | add ebx, 0x3FFFFF |
369 | and ebx, NOT(0x3FFFFF) |
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370 | shr ebx, 22 |
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371 | mov [app_tabs], ebx |
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372 | |||
170 | serge | 373 | mov ecx, [img_size] |
374 | add ecx, 4095 |
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375 | and ecx, NOT(4095) |
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164 | serge | 376 | |
170 | serge | 377 | mov [img_size], ecx |
378 | shr ecx, 12 |
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379 | mov [img_pages], ecx |
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164 | serge | 380 | |
170 | serge | 381 | if GREEDY_KERNEL |
382 | lea eax, [ecx+ebx+2] ;only image size |
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383 | else |
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384 | lea eax, [eax+ebx+2] ;all requested memory |
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385 | end if |
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386 | cmp eax, [pg_data.pages_free] |
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387 | ja .fail |
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388 | |||
164 | serge | 389 | call alloc_page |
390 | test eax, eax |
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391 | jz .fail |
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392 | mov [dir_addr], eax |
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393 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
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394 | |||
395 | mov esi, sys_pgdir |
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396 | mov edi, [tmp_task_pdir] |
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378 | serge | 397 | mov ecx, (page_tabs shr 20)/4 |
164 | serge | 398 | cld |
399 | rep movsd |
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400 | |||
378 | serge | 401 | mov eax, [dir_addr] |
402 | or eax, PG_SW |
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403 | stosd ; [(page_tabs shr 20)]= eax |
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404 | |||
405 | mov ecx, 0x800/4 |
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164 | serge | 406 | xor eax, eax |
407 | rep stosd |
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408 | |||
188 | serge | 409 | mov eax, [dir_addr] |
164 | serge | 410 | call set_cr3 |
411 | |||
412 | mov edx, [app_tabs] |
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413 | mov edi, new_app_base |
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414 | @@: |
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415 | call alloc_page |
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416 | test eax, eax |
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417 | jz .fail |
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418 | |||
188 | serge | 419 | stdcall map_page_table, edi, eax |
164 | serge | 420 | add edi, 0x00400000 |
421 | dec edx |
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422 | jnz @B |
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423 | |||
424 | mov edi, new_app_base |
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425 | shr edi, 10 |
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365 | serge | 426 | add edi, page_tabs |
269 | serge | 427 | |
164 | serge | 428 | mov ecx, [app_tabs] |
429 | shl ecx, 10 |
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430 | xor eax, eax |
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431 | rep stosd |
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432 | |||
269 | serge | 433 | mov ecx, [img_pages] |
434 | mov ebx, PG_UW |
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164 | serge | 435 | mov edx, new_app_base |
269 | serge | 436 | mov esi, [img_base] |
437 | mov edi, new_app_base |
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438 | shr esi, 10 |
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439 | shr edi, 10 |
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365 | serge | 440 | add esi, page_tabs |
441 | add edi, page_tabs |
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269 | serge | 442 | .remap: |
443 | lodsd |
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444 | or eax, ebx ; force user level r/w access |
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445 | stosd |
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446 | add edx, 0x1000 |
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447 | dec [app_pages] |
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448 | dec ecx |
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449 | jnz .remap |
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450 | |||
451 | mov ecx, [app_pages] |
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452 | test ecx, ecx |
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453 | jz .done |
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454 | |||
455 | if GREEDY_KERNEL |
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456 | mov eax, 0x02 |
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457 | .reserve: |
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458 | stosd |
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459 | invlpg [edx] |
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460 | add edx, 4096 |
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461 | dec ecx |
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462 | jnz .reserve |
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463 | else |
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464 | |||
164 | serge | 465 | .alloc: |
466 | call alloc_page |
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467 | test eax, eax |
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468 | jz .fail |
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469 | |||
470 | stdcall map_page,edx,eax,dword PG_UW |
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471 | add edx, 0x1000 |
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269 | serge | 472 | dec [app_pages] |
164 | serge | 473 | jnz .alloc |
474 | |||
269 | serge | 475 | end if |
164 | serge | 476 | |
269 | serge | 477 | .done: |
164 | serge | 478 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
479 | |||
480 | dec [pg_data.pg_mutex] |
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481 | mov eax, [dir_addr] |
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482 | ret |
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483 | .fail: |
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484 | dec [pg_data.pg_mutex] |
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485 | cmp [dir_addr], 0 |
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357 | serge | 486 | je @f |
164 | serge | 487 | stdcall destroy_app_space, [dir_addr] |
488 | @@: |
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489 | xor eax, eax |
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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 | set_cr3: |
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495 | mov esi, [CURRENT_TASK] |
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496 | mov ebx, esi |
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497 | shl esi,8 |
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380 | serge | 498 | mov [SLOT_BASE+esi+0xB8],eax |
164 | serge | 499 | imul ebx,tss_step |
500 | add ebx,tss_data |
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501 | mov [ebx+28], eax |
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502 | mov cr3, eax |
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503 | ret |
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504 | |||
505 | align 4 |
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506 | proc destroy_page_table stdcall, pg_tab:dword |
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507 | |||
508 | push esi |
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509 | |||
510 | mov esi, [pg_tab] |
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511 | mov ecx, 1024 |
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512 | .free: |
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513 | mov eax, [esi] |
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514 | test eax, 1 |
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515 | jz .next |
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516 | call free_page |
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517 | .next: |
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518 | add esi, 4 |
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519 | dec ecx |
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520 | jnz .free |
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521 | pop esi |
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522 | ret |
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523 | endp |
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524 | |||
525 | align 4 |
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526 | proc destroy_app_space stdcall, pg_dir:dword |
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527 | |||
276 | serge | 528 | mov ebx, pg_data.pg_mutex |
529 | call wait_mutex ;ebx |
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164 | serge | 530 | |
531 | xor edx,edx |
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532 | mov eax,0x2 |
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533 | mov ebx, [pg_dir] |
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534 | |||
535 | .loop: |
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536 | ;eax = current slot of process |
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537 | mov ecx,eax |
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538 | shl ecx,5 |
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539 | cmp byte [CURRENT_TASK+ecx+0xa],9 ;if process running? |
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540 | jz @f ;skip empty slots |
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541 | shl ecx,3 |
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380 | serge | 542 | cmp [SLOT_BASE+ecx+0xB8],ebx ;compare page directory addresses |
164 | serge | 543 | jnz @f |
544 | inc edx ;thread found |
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545 | @@: |
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546 | inc eax |
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547 | cmp eax,[TASK_COUNT] ;exit loop if we look through all processes |
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548 | jle .loop |
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549 | |||
550 | ;edx = number of threads |
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551 | ;our process is zombi so it isn't counted |
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552 | cmp edx,1 |
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553 | jg .exit |
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554 | ;if there isn't threads then clear memory. |
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555 | |||
556 | mov eax, [pg_dir] |
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557 | and eax, not 0xFFF |
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558 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
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559 | mov esi, [tmp_task_pdir] |
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378 | serge | 560 | add esi, 0x800 |
561 | mov edi, 0x800/4 |
||
164 | serge | 562 | .destroy: |
563 | mov eax, [esi] |
||
564 | test eax, 1 |
||
565 | jz .next |
||
566 | and eax, not 0xFFF |
||
567 | stdcall map_page,[tmp_task_ptab],eax,dword PG_SW |
||
568 | stdcall destroy_page_table, [tmp_task_ptab] |
||
569 | mov eax, [esi] |
||
570 | call free_page |
||
571 | .next: |
||
572 | add esi, 4 |
||
573 | dec edi |
||
574 | jnz .destroy |
||
575 | |||
576 | mov eax, [pg_dir] |
||
577 | call free_page |
||
578 | .exit: |
||
579 | stdcall map_page,[tmp_task_ptab],dword 0,dword PG_UNMAP |
||
580 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
||
581 | dec [pg_data.pg_mutex] |
||
582 | ret |
||
583 | endp |
||
584 | |||
585 | pid_to_slot: |
||
586 | ;Input: |
||
587 | ; eax - pid of process |
||
588 | ;Output: |
||
589 | ; eax - slot of process or 0 if process don't exists |
||
590 | ;Search process by PID. |
||
591 | push ebx |
||
592 | push ecx |
||
593 | mov ebx,[TASK_COUNT] |
||
594 | shl ebx,5 |
||
595 | mov ecx,2*32 |
||
596 | |||
597 | .loop: |
||
598 | ;ecx=offset of current process info entry |
||
599 | ;ebx=maximum permitted offset |
||
600 | cmp byte [CURRENT_TASK+ecx+0xa],9 |
||
601 | jz .endloop ;skip empty slots |
||
602 | cmp [CURRENT_TASK+ecx+0x4],eax ;check PID |
||
603 | jz .pid_found |
||
604 | .endloop: |
||
605 | add ecx,32 |
||
606 | cmp ecx,ebx |
||
607 | jle .loop |
||
608 | |||
609 | pop ecx |
||
610 | pop ebx |
||
611 | xor eax,eax |
||
612 | ret |
||
613 | |||
614 | .pid_found: |
||
615 | shr ecx,5 |
||
616 | mov eax,ecx ;convert offset to index of slot |
||
617 | pop ecx |
||
618 | pop ebx |
||
619 | ret |
||
620 | |||
621 | check_region: |
||
622 | ;input: |
||
623 | ; ebx - start of buffer |
||
624 | ; ecx - size of buffer |
||
625 | ;result: |
||
626 | ; eax = 1 region lays in app memory |
||
627 | ; eax = 0 region don't lays in app memory |
||
628 | mov eax,[CURRENT_TASK] |
||
629 | jmp check_process_region |
||
630 | ;----------------------------------------------------------------------------- |
||
631 | check_process_region: |
||
632 | ;input: |
||
633 | ; eax - slot |
||
634 | ; ebx - start of buffer |
||
635 | ; ecx - size of buffer |
||
636 | ;result: |
||
637 | ; eax = 1 region lays in app memory |
||
638 | ; eax = 0 region don't lays in app memory |
||
639 | |||
640 | test ecx,ecx |
||
641 | jle .ok |
||
642 | shl eax,5 |
||
643 | cmp word [CURRENT_TASK+eax+0xa],0 |
||
644 | jnz .failed |
||
645 | shl eax,3 |
||
380 | serge | 646 | mov eax,[SLOT_BASE+eax+0xb8] |
164 | serge | 647 | test eax,eax |
648 | jz .failed |
||
649 | |||
650 | mov eax,1 |
||
651 | ret |
||
652 | |||
653 | |||
654 | ; call MEM_Get_Linear_Address |
||
655 | ; push ebx |
||
656 | ; push ecx |
||
657 | ; push edx |
||
658 | ; mov edx,ebx |
||
659 | ; and edx,not (4096-1) |
||
660 | ; sub ebx,edx |
||
661 | ; add ecx,ebx |
||
662 | ; mov ebx,edx |
||
663 | ; add ecx,(4096-1) |
||
664 | ; and ecx,not (4096-1) |
||
665 | ;.loop: |
||
666 | ;;eax - linear address of page directory |
||
667 | ;;ebx - current page |
||
668 | ;;ecx - current size |
||
669 | ; mov edx,ebx |
||
670 | ; shr edx,22 |
||
671 | ; mov edx,[eax+4*edx] |
||
672 | ; and edx,not (4096-1) |
||
673 | ; test edx,edx |
||
674 | ; jz .failed1 |
||
675 | ; push eax |
||
676 | ; mov eax,edx |
||
677 | ; call MEM_Get_Linear_Address |
||
678 | ; mov edx,ebx |
||
679 | ; shr edx,12 |
||
680 | ; and edx,(1024-1) |
||
681 | ; mov eax,[eax+4*edx] |
||
682 | ; and eax,not (4096-1) |
||
683 | ; test eax,eax |
||
684 | ; pop eax |
||
685 | ; jz .failed1 |
||
686 | ; add ebx,4096 |
||
687 | ; sub ecx,4096 |
||
688 | ; jg .loop |
||
689 | ; pop edx |
||
690 | ; pop ecx |
||
691 | ; pop ebx |
||
692 | .ok: |
||
693 | mov eax,1 |
||
694 | ret |
||
695 | ; |
||
696 | ;.failed1: |
||
697 | ; pop edx |
||
698 | ; pop ecx |
||
699 | ; pop ebx |
||
700 | .failed: |
||
701 | xor eax,eax |
||
702 | ret |
||
703 | |||
704 | align 4 |
||
705 | proc read_process_memory |
||
706 | ;Input: |
||
707 | ; eax - process slot |
||
708 | ; ebx - buffer address |
||
709 | ; ecx - buffer size |
||
710 | ; edx - start address in other process |
||
711 | ;Output: |
||
712 | ; eax - number of bytes read. |
||
713 | locals |
||
714 | slot dd ? |
||
715 | buff dd ? |
||
716 | r_count dd ? |
||
717 | offset dd ? |
||
718 | tmp_r_cnt dd ? |
||
719 | endl |
||
720 | |||
721 | mov [slot], eax |
||
722 | mov [buff], ebx |
||
723 | mov [r_count], ecx |
||
724 | mov [tmp_r_cnt], ecx |
||
725 | mov [offset], edx |
||
726 | |||
727 | pushad |
||
728 | .read_mem: |
||
729 | mov edx, [offset] |
||
730 | mov ebx, [tmp_r_cnt] |
||
731 | |||
732 | mov ecx, 0x400000 |
||
733 | and edx, 0x3FFFFF |
||
734 | sub ecx, edx |
||
735 | cmp ecx, ebx |
||
736 | jbe @f |
||
737 | mov ecx, ebx |
||
738 | @@: |
||
739 | cmp ecx, 0x8000 |
||
740 | jna @F |
||
741 | mov ecx, 0x8000 |
||
742 | @@: |
||
743 | mov eax, [slot] |
||
744 | shl eax,8 |
||
745 | mov ebx, [offset] |
||
746 | add ebx, new_app_base |
||
747 | push ecx |
||
748 | stdcall map_memEx, [proc_mem_map],\ |
||
380 | serge | 749 | [SLOT_BASE+eax+0xB8],\ |
164 | serge | 750 | ebx, ecx |
751 | pop ecx |
||
752 | |||
753 | mov esi, [offset] |
||
754 | and esi, 0xfff |
||
755 | add esi, [proc_mem_map] |
||
756 | mov edi, [buff] |
||
757 | mov edx, ecx |
||
758 | rep movsb |
||
759 | |||
760 | add [offset], edx |
||
761 | sub [tmp_r_cnt], edx |
||
762 | jnz .read_mem |
||
763 | |||
764 | popad |
||
765 | mov eax, [r_count] |
||
766 | ret |
||
767 | endp |
||
768 | |||
769 | align 4 |
||
770 | proc write_process_memory |
||
771 | ;Input: |
||
772 | ; eax - process slot |
||
773 | ; ebx - buffer address |
||
774 | ; ecx - buffer size |
||
775 | ; edx - start address in other process |
||
776 | ;Output: |
||
777 | ; eax - number of bytes written |
||
778 | |||
779 | locals |
||
780 | slot dd ? |
||
781 | buff dd ? |
||
782 | w_count dd ? |
||
783 | offset dd ? |
||
784 | tmp_w_cnt dd ? |
||
785 | endl |
||
786 | |||
787 | mov [slot], eax |
||
788 | mov [buff], ebx |
||
789 | mov [w_count], ecx |
||
790 | mov [tmp_w_cnt], ecx |
||
791 | mov [offset], edx |
||
792 | |||
793 | pushad |
||
794 | .read_mem: |
||
795 | mov edx, [offset] |
||
796 | mov ebx, [tmp_w_cnt] |
||
797 | |||
798 | mov ecx, 0x400000 |
||
799 | and edx, 0x3FFFFF |
||
800 | sub ecx, edx |
||
801 | cmp ecx, ebx |
||
802 | jbe @f |
||
803 | mov ecx, ebx |
||
804 | @@: |
||
805 | cmp ecx, 0x8000 |
||
806 | jna @F |
||
807 | mov ecx, 0x8000 |
||
808 | @@: |
||
809 | mov eax, [slot] |
||
810 | shl eax,8 |
||
811 | mov ebx, [offset] |
||
812 | add ebx, new_app_base |
||
813 | push ecx |
||
814 | stdcall map_memEx, [proc_mem_map],\ |
||
380 | serge | 815 | [SLOT_BASE+eax+0xB8],\ |
164 | serge | 816 | ebx, ecx |
817 | pop ecx |
||
818 | |||
819 | mov edi, [offset] |
||
820 | and edi, 0xfff |
||
821 | add edi, [proc_mem_map] |
||
822 | mov esi, [buff] |
||
823 | mov edx, ecx |
||
824 | rep movsb |
||
825 | |||
826 | add [offset], edx |
||
827 | sub [tmp_w_cnt], edx |
||
828 | jnz .read_mem |
||
829 | |||
830 | popad |
||
831 | mov eax, [w_count] |
||
832 | ret |
||
833 | endp |
||
834 | |||
835 | align 4 |
||
836 | proc new_sys_threads |
||
837 | locals |
||
838 | slot dd ? |
||
237 | serge | 839 | app_cmdline dd ? ;0x00 |
840 | app_path dd ? ;0x04 |
||
841 | app_eip dd ? ;0x08 |
||
842 | app_esp dd ? ;0x0C |
||
843 | app_mem dd ? ;0x10 |
||
164 | serge | 844 | endl |
845 | |||
237 | serge | 846 | cmp eax,1 |
847 | jne .failed ;other subfunctions |
||
164 | serge | 848 | |
237 | serge | 849 | xor eax,eax |
850 | mov [app_cmdline], eax |
||
851 | mov [app_path], eax |
||
852 | mov [app_eip], ebx |
||
853 | mov [app_esp], ecx |
||
164 | serge | 854 | |
855 | mov esi,new_process_loading |
||
856 | call sys_msg_board_str |
||
857 | .wait_lock: |
||
858 | cmp [application_table_status],0 |
||
859 | je .get_lock |
||
860 | call change_task |
||
861 | jmp .wait_lock |
||
862 | |||
863 | .get_lock: |
||
864 | mov eax, 1 |
||
865 | xchg eax, [application_table_status] |
||
866 | cmp eax, 0 |
||
867 | jne .wait_lock |
||
868 | |||
869 | call set_application_table_status |
||
870 | |||
871 | call get_new_process_place |
||
872 | test eax, eax |
||
873 | jz .failed |
||
874 | |||
875 | mov [slot], eax |
||
876 | |||
877 | mov esi,[CURRENT_TASK] |
||
878 | shl esi,8 |
||
380 | serge | 879 | add esi,SLOT_BASE |
237 | serge | 880 | mov ebx,esi ;ebx=esi - pointer to extended information about current thread |
164 | serge | 881 | |
237 | serge | 882 | mov edi, eax |
164 | serge | 883 | shl edi,8 |
380 | serge | 884 | add edi,SLOT_BASE |
237 | serge | 885 | mov edx,edi ;edx=edi - pointer to extended infomation about new thread |
164 | serge | 886 | mov ecx,256/4 |
237 | serge | 887 | xor eax, eax |
888 | cld |
||
889 | rep stosd ;clean extended information about new thread |
||
890 | mov esi,ebx |
||
164 | serge | 891 | mov edi,edx |
892 | mov ecx,11 |
||
237 | serge | 893 | rep movsb ;copy process name |
164 | serge | 894 | |
237 | serge | 895 | mov eax,[ebx+APPDATA.heap_base] |
896 | mov [edx+APPDATA.heap_base], eax |
||
164 | serge | 897 | |
237 | serge | 898 | mov ecx,[ebx+APPDATA.heap_top] |
899 | mov [edx+APPDATA.heap_top], ecx |
||
900 | |||
901 | mov eax,[ebx+APPDATA.mem_size] |
||
902 | mov [edx+APPDATA.mem_size], eax |
||
903 | |||
904 | mov ecx,[ebx+APPDATA.dir_table] |
||
905 | mov [edx+APPDATA.dir_table],ecx ;copy page directory |
||
906 | |||
907 | lea eax, [app_cmdline] |
||
908 | stdcall set_app_params ,[slot],eax,dword 0,\ |
||
909 | dword 0,dword 0 |
||
910 | |||
164 | serge | 911 | mov esi,new_process_running |
912 | call sys_msg_board_str ;output information about succefull startup |
||
913 | |||
914 | mov [application_table_status],0 ;unlock application_table_status mutex |
||
915 | mov eax,[process_number] ;set result |
||
916 | ret |
||
917 | .failed: |
||
918 | mov [application_table_status],0 |
||
919 | mov eax,-1 |
||
920 | ret |
||
921 | endp |
||
922 | |||
276 | serge | 923 | ; param |
924 | ; ebx=mutex |
||
925 | |||
164 | serge | 926 | align 4 |
276 | serge | 927 | wait_mutex: |
928 | push eax |
||
929 | push ebx |
||
321 | diamond | 930 | .do_wait: |
164 | serge | 931 | cmp dword [ebx],0 |
932 | je .get_lock |
||
933 | call change_task |
||
321 | diamond | 934 | jmp .do_wait |
164 | serge | 935 | .get_lock: |
936 | mov eax, 1 |
||
937 | xchg eax, [ebx] |
||
938 | test eax, eax |
||
321 | diamond | 939 | jnz .do_wait |
276 | serge | 940 | pop ebx |
941 | pop eax |
||
164 | serge | 942 | ret |
943 | |||
237 | serge | 944 | align 4 |
945 | proc set_app_params stdcall,slot:dword, params:dword,\ |
||
946 | cmd_line:dword, app_path:dword, flags:dword |
||
164 | serge | 947 | |
357 | serge | 948 | locals |
949 | pl0_stack dd ? |
||
950 | endl |
||
237 | serge | 951 | |
357 | serge | 952 | stdcall kernel_alloc, 0x2000 |
953 | mov [pl0_stack], eax |
||
954 | |||
955 | lea edi, [eax+0x2000-512] |
||
956 | |||
957 | mov eax, [slot] |
||
958 | mov ebx, eax |
||
959 | |||
960 | shl eax, 8 |
||
380 | serge | 961 | mov [eax+SLOT_BASE+APPDATA.fpu_state], edi |
962 | mov [eax+SLOT_BASE+APPDATA.fpu_handler], 0 |
||
963 | mov [eax+SLOT_BASE+APPDATA.sse_handler], 0 |
||
357 | serge | 964 | |
965 | mov esi, fpu_data |
||
237 | serge | 966 | mov ecx, 512/4 |
967 | rep movsd |
||
968 | |||
357 | serge | 969 | cmp ebx,[TASK_COUNT] |
970 | jle .noinc |
||
971 | inc dword [TASK_COUNT] ;update number of processes |
||
237 | serge | 972 | .noinc: |
281 | serge | 973 | shl ebx,8 |
380 | serge | 974 | lea edx, [ebx+SLOT_BASE+APP_EV_OFFSET] |
975 | mov [SLOT_BASE+APPDATA.fd_ev+ebx],edx |
||
976 | mov [SLOT_BASE+APPDATA.bk_ev+ebx],edx |
||
354 | serge | 977 | |
978 | add edx, APP_OBJ_OFFSET-APP_EV_OFFSET |
||
380 | serge | 979 | mov [SLOT_BASE+APPDATA.fd_obj+ebx],edx |
980 | mov [SLOT_BASE+APPDATA.bk_obj+ebx],edx |
||
237 | serge | 981 | |
281 | serge | 982 | mov ecx, [def_cursor] |
380 | serge | 983 | mov [SLOT_BASE+APPDATA.cursor+ebx],ecx |
357 | serge | 984 | mov eax, [pl0_stack] |
380 | serge | 985 | mov [SLOT_BASE+APPDATA.pl0_stack+ebx],eax |
281 | serge | 986 | |
987 | shr ebx,3 |
||
237 | serge | 988 | mov eax, new_app_base |
989 | mov dword [CURRENT_TASK+ebx+0x10],eax |
||
990 | |||
991 | .add_command_line: |
||
992 | mov edx,[params] |
||
993 | mov edx,[edx] ;app_cmdline |
||
994 | test edx,edx |
||
995 | jz @F ;application don't need parameters |
||
281 | serge | 996 | |
997 | mov eax, edx |
||
998 | add eax, 256 |
||
999 | jc @f |
||
1000 | |||
380 | serge | 1001 | cmp eax, [SLOT_BASE+APPDATA.mem_size+ebx*8] |
281 | serge | 1002 | ja @f |
1003 | |||
237 | serge | 1004 | add edx, new_app_base |
262 | diamond | 1005 | stdcall k_strncpy, edx, [cmd_line], 256 |
237 | serge | 1006 | @@: |
1007 | mov edx,[params] |
||
1008 | mov edx, [edx+4] ;app_path |
||
1009 | test edx,edx |
||
1010 | jz @F ;application don't need path of file |
||
262 | diamond | 1011 | mov eax, edx |
1012 | add eax, 1024 |
||
1013 | jc @f |
||
380 | serge | 1014 | cmp eax, [SLOT_BASE+APPDATA.mem_size+ebx*8] |
262 | diamond | 1015 | ja @f |
237 | serge | 1016 | add edx, new_app_base |
262 | diamond | 1017 | stdcall k_strncpy, edx, [app_path], 1024 |
237 | serge | 1018 | @@: |
1019 | mov ebx,[slot] |
||
1020 | mov eax,ebx |
||
1021 | shl ebx,5 |
||
1022 | ; set window state to 'normal' (non-minimized/maximized/rolled-up) state |
||
1023 | mov [ebx+window_data+WDATA.fl_wstate], WSTATE_NORMAL |
||
1024 | mov [ebx+window_data+WDATA.fl_redraw], 1 |
||
1025 | add ebx,CURRENT_TASK ;ebx - pointer to information about process |
||
1026 | mov [ebx+TASKDATA.wnd_number],al;set window number on screen = process slot |
||
1027 | |||
1028 | mov [ebx+TASKDATA.event_mask],dword 1+2+4 ;set default event flags (see 40 function) |
||
1029 | |||
1030 | inc dword [process_number] |
||
1031 | mov eax,[process_number] |
||
1032 | mov [ebx+4],eax ;set PID |
||
1033 | |||
1034 | mov ecx,ebx |
||
1035 | add ecx,(draw_data-CURRENT_TASK) ;ecx - pointer to draw data |
||
1036 | ;set draw data to full screen |
||
1037 | |||
1038 | mov [ecx+0],dword 0 |
||
1039 | mov [ecx+4],dword 0 |
||
381 | serge | 1040 | mov eax,[ScreenWidth] |
237 | serge | 1041 | mov [ecx+8],eax |
381 | serge | 1042 | mov eax,[ScreenHeight] |
237 | serge | 1043 | mov [ecx+12],eax |
1044 | |||
1045 | mov edi,[slot] |
||
1046 | imul edi,tss_step |
||
1047 | add edi,tss_data |
||
1048 | mov ecx,128/4 |
||
1049 | xor eax, eax |
||
1050 | cld |
||
1051 | rep stosd |
||
1052 | ;Add IO access table - bit array of permitted ports |
||
1053 | not eax |
||
1054 | mov ecx,2048 |
||
1055 | rep stosd ; access to 4096*8=65536 ports |
||
1056 | sub edi, tss_step |
||
1057 | |||
1058 | ;set cr3 register in TSS of application |
||
1059 | mov ecx, [slot] |
||
1060 | shl ecx, 8 |
||
380 | serge | 1061 | mov eax,[SLOT_BASE+ecx+APPDATA.dir_table] |
237 | serge | 1062 | mov [edi+TSS._cr3],eax |
1063 | |||
1064 | mov esi,[params] |
||
1065 | mov eax, [esi+0x08] ;app_eip |
||
1066 | mov [edi+TSS._eip],eax ;set eip in TSS |
||
1067 | mov eax, [esi+0x0C] ;app_esp |
||
1068 | mov [edi+TSS._esp],eax ;set stack in TSS |
||
273 | diamond | 1069 | mov [edi+TSS._eflags],dword 0x1202 |
237 | serge | 1070 | |
1071 | mov [edi+TSS._cs],app_code ;selector of code segment |
||
1072 | mov [edi+TSS._ss],app_data |
||
1073 | mov [edi+TSS._ds],app_data |
||
1074 | mov [edi+TSS._es],app_data |
||
1075 | mov [edi+TSS._fs],app_data |
||
1076 | mov [edi+TSS._gs],graph_data ;selector of graphic segment |
||
1077 | mov [edi+TSS._io],word 128 |
||
1078 | mov [edi+TSS._ss0], os_data |
||
357 | serge | 1079 | mov ebx, [pl0_stack] |
1080 | add ebx, 0x2000-512 |
||
237 | serge | 1081 | mov [edi+TSS._esp0],ebx |
1082 | |||
1083 | mov ecx, edi ;ecx - address of application TSS |
||
1084 | mov ebx,[slot] |
||
1085 | shl ebx,3 |
||
1086 | ;set TSS descriptor |
||
1087 | mov [ebx+gdts+tss0+0],word tss_step ;limit (size) |
||
1088 | mov [ebx+gdts+tss0+2],cx ;part of offset |
||
1089 | shr ecx,16 |
||
1090 | mov [ebx+gdts+tss0+4],cl ;part of offset |
||
1091 | mov [ebx+gdts+tss0+7],ch ;part of offset |
||
1092 | mov [ebx+gdts+tss0+5],word 01010000b*256+11101001b ;system flags |
||
1093 | |||
1094 | ;flush keyboard and buttons queue |
||
1095 | mov [KEY_COUNT],byte 0 |
||
1096 | mov [BTN_COUNT],byte 0 |
||
1097 | |||
1098 | mov edi,[slot] |
||
1099 | shl edi,5 |
||
1100 | add edi,window_data |
||
1101 | mov ebx,[slot] |
||
1102 | movzx esi,word [WIN_STACK+ebx*2] |
||
1103 | lea esi,[WIN_POS+esi*2] |
||
1104 | call windowactivate ;gui initialization |
||
1105 | |||
1106 | mov ebx,[slot] |
||
1107 | shl ebx,5 |
||
1108 | mov [CURRENT_TASK+ebx+0xa],byte 0 ;set process state - running |
||
1109 | ; set if debuggee |
||
1110 | mov eax, [flags] |
||
1111 | test byte [flags], 1 |
||
1112 | jz .no_debug |
||
1113 | mov [CURRENT_TASK+ebx+0xa],byte 1 ;set process state - suspended |
||
1114 | mov eax,[CURRENT_TASK] |
||
380 | serge | 1115 | mov [SLOT_BASE+ebx*8+0xac],eax ;set debugger PID - current |
237 | serge | 1116 | .no_debug: |
1117 | mov esi,new_process_running |
||
1118 | call sys_msg_board_str ;output information about succefull startup |
||
1119 | ret |
||
1120 | endp |
||
1121 | |||
1122 | |||
1123 | |||
164 | serge | 1124 | include "debug.inc" |
1125 | |||
1126 | iglobal |
||
1127 | new_process_loading db 'K : New Process - loading',13,10,0 |
||
1128 | new_process_running db 'K : New Process - done',13,10,0 |
||
1129 | start_not_enough_memory db 'K : New Process - not enough memory',13,10,0 |
||
1130 | endg256 |
||
1131 |