Rev 357 | Rev 364 | 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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162 | add eax, PROC_BASE |
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163 | mov [slot_base], eax |
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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] |
237 | serge | 193 | test eax, eax |
194 | jz .failed |
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195 | |||
196 | mov ebx,[slot_base] |
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197 | mov [ebx+APPDATA.dir_table],eax |
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363 | serge | 198 | mov eax,[hdr_mem] |
237 | serge | 199 | mov [ebx+APPDATA.mem_size],eax |
200 | |||
357 | serge | 201 | if GREEDY_KERNEL |
202 | else |
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363 | serge | 203 | mov ecx, [hdr_mem] |
269 | serge | 204 | mov edi, [file_size] |
205 | add edi, 4095 |
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206 | and edi, not 4095 |
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207 | sub ecx, edi |
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208 | jna @F |
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209 | |||
210 | xor eax, eax |
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211 | add edi, new_app_base |
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237 | serge | 212 | cld |
269 | serge | 213 | rep stosb |
247 | serge | 214 | @@: |
269 | serge | 215 | end if |
216 | |||
217 | ; release only virtual space, not phisical memory |
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218 | |||
219 | stdcall free_kernel_space, [file_base] |
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363 | serge | 220 | lea eax, [hdr_cmdline] |
221 | lea ebx, [cmdline] |
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222 | lea ecx, [filename] |
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223 | stdcall set_app_params ,[slot],eax,ebx,ecx,[flags] |
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237 | serge | 224 | |
225 | mov eax, [save_cr3] |
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226 | call set_cr3 |
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227 | |||
363 | serge | 228 | ; popfd |
247 | serge | 229 | xor ebx, ebx |
230 | mov [application_table_status],ebx ;unlock application_table_status mutex |
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231 | mov eax,[process_number] ;set result |
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164 | serge | 232 | ret |
237 | serge | 233 | .failed: |
234 | mov eax, [save_cr3] |
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235 | call set_cr3 |
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269 | serge | 236 | .err: |
363 | serge | 237 | ; popfd |
247 | serge | 238 | .err_hdr: |
239 | stdcall kernel_free,[file_base] |
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240 | .err_file: |
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237 | serge | 241 | xor eax, eax |
242 | mov [application_table_status],eax |
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321 | diamond | 243 | mov eax, ecx |
237 | serge | 244 | ret |
245 | endp |
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164 | serge | 246 | |
237 | serge | 247 | align 4 |
248 | test_app_header: |
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249 | virtual at eax |
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250 | APP_HEADER_00 APP_HEADER_00 |
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251 | end virtual |
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252 | virtual at eax |
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164 | serge | 253 | APP_HEADER_01 APP_HEADER_01 |
254 | end virtual |
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255 | |||
237 | serge | 256 | cmp dword [eax], 'MENU' |
257 | jne .fail |
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258 | cmp word [eax+4],'ET' |
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259 | jne .fail |
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164 | serge | 260 | |
237 | serge | 261 | cmp [eax+6], word '00' |
262 | jne .check_01_header |
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164 | serge | 263 | |
237 | serge | 264 | mov ecx,[APP_HEADER_00.start] |
265 | mov [ebx+0x08], ecx ;app_eip |
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266 | mov edx,[APP_HEADER_00.mem_size] |
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267 | mov [ebx+0x10], edx ;app_mem |
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268 | shr edx,1 |
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269 | sub edx,0x10 |
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270 | mov [ebx+0x0C], edx ;app_esp |
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271 | mov ecx,[APP_HEADER_00.i_param] |
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272 | mov [ebx], ecx ;app_cmdline |
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273 | mov [ebx+4], dword 0 ;app_path |
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269 | serge | 274 | mov edx, [APP_HEADER_00.i_end] |
275 | mov [ebx+0x14], edx |
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164 | serge | 276 | ret |
277 | |||
237 | serge | 278 | .check_01_header: |
164 | serge | 279 | |
237 | serge | 280 | cmp [eax+6],word '01' |
281 | jne .fail |
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282 | |||
283 | mov ecx,[APP_HEADER_01.start] |
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284 | mov [ebx+0x08], ecx ;app_eip |
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285 | mov edx,[APP_HEADER_01.mem_size] |
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286 | mov [ebx+0x10], edx ;app_mem |
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287 | mov ecx,[APP_HEADER_01.stack_top] |
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288 | mov [ebx+0x0C], ecx ;app_esp |
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289 | mov edx,[APP_HEADER_01.i_param] |
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290 | mov [ebx], edx ;app_cmdline |
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291 | mov ecx,[APP_HEADER_01.i_icon] |
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292 | mov [ebx+4], ecx ;app_path |
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269 | serge | 293 | mov edx, [APP_HEADER_01.i_end] |
294 | mov [ebx+0x14], edx |
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237 | serge | 295 | ret |
296 | .fail: |
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164 | serge | 297 | xor eax, eax |
298 | ret |
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299 | |||
300 | align 4 |
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301 | proc get_new_process_place |
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302 | ;input: |
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303 | ; none |
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304 | ;result: |
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305 | ; eax=[new_process_place]<>0 - ok |
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306 | ; 0 - failed. |
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307 | ;This function find least empty slot. |
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308 | ;It doesn't increase [TASK_COUNT]! |
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309 | mov eax,CURRENT_TASK |
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310 | mov ebx,[TASK_COUNT] |
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311 | inc ebx |
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312 | shl ebx,5 |
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313 | add ebx,eax ;ebx - address of process information for (last+1) slot |
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314 | .newprocessplace: |
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315 | ;eax = address of process information for current slot |
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316 | cmp eax,ebx |
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317 | jz .endnewprocessplace ;empty slot after high boundary |
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318 | add eax,0x20 |
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319 | cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty |
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320 | jnz .newprocessplace |
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321 | .endnewprocessplace: |
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322 | mov ebx,eax |
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323 | sub eax,CURRENT_TASK |
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324 | shr eax,5 ;calculate slot index |
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325 | cmp eax,256 |
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326 | jge .failed ;it should be <256 |
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327 | mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary) |
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328 | ; mov [new_process_place], eax |
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329 | ret |
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330 | |||
331 | .failed: |
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332 | xor eax,eax |
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333 | ret |
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334 | endp |
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335 | |||
336 | align 4 |
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269 | serge | 337 | proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword |
164 | serge | 338 | locals |
339 | app_pages dd ? |
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340 | img_pages dd ? |
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341 | dir_addr dd ? |
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342 | app_tabs dd ? |
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343 | endl |
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344 | |||
276 | serge | 345 | mov ebx, pg_data.pg_mutex |
346 | call wait_mutex ;ebx |
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164 | serge | 347 | |
348 | xor eax, eax |
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349 | mov [dir_addr], eax |
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350 | |||
351 | mov eax, [app_size] |
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172 | serge | 352 | add eax, 4095 |
164 | serge | 353 | and eax, NOT(4095) |
354 | mov [app_size], eax |
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355 | mov ebx, eax |
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356 | shr eax, 12 |
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357 | mov [app_pages], eax |
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170 | serge | 358 | |
164 | serge | 359 | add ebx, 0x3FFFFF |
360 | and ebx, NOT(0x3FFFFF) |
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361 | shr ebx, 22 |
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362 | mov [app_tabs], ebx |
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363 | |||
170 | serge | 364 | mov ecx, [img_size] |
365 | add ecx, 4095 |
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366 | and ecx, NOT(4095) |
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164 | serge | 367 | |
170 | serge | 368 | mov [img_size], ecx |
369 | shr ecx, 12 |
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370 | mov [img_pages], ecx |
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164 | serge | 371 | |
170 | serge | 372 | if GREEDY_KERNEL |
373 | lea eax, [ecx+ebx+2] ;only image size |
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374 | else |
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375 | lea eax, [eax+ebx+2] ;all requested memory |
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376 | end if |
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377 | cmp eax, [pg_data.pages_free] |
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378 | ja .fail |
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379 | |||
164 | serge | 380 | call alloc_page |
381 | test eax, eax |
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382 | jz .fail |
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383 | mov [dir_addr], eax |
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384 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
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385 | |||
386 | mov esi, sys_pgdir |
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387 | mov edi, [tmp_task_pdir] |
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388 | mov ecx, 384 |
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389 | cld |
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390 | rep movsd |
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391 | |||
392 | mov ecx, 384 |
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393 | xor eax, eax |
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394 | cld |
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395 | rep stosd |
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396 | |||
397 | mov ecx, 256 |
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398 | mov esi, sys_pgdir+0xc00 |
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399 | rep movsd |
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400 | |||
188 | serge | 401 | mov eax, [dir_addr] |
164 | serge | 402 | or eax, PG_SW |
403 | mov ebx, [tmp_task_pdir] |
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404 | mov [ebx+0x600], eax |
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405 | |||
406 | mov eax, [dir_addr] |
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407 | call set_cr3 |
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408 | |||
409 | mov edx, [app_tabs] |
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410 | mov edi, new_app_base |
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411 | @@: |
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412 | call alloc_page |
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413 | test eax, eax |
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414 | jz .fail |
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415 | |||
188 | serge | 416 | stdcall map_page_table, edi, eax |
164 | serge | 417 | add edi, 0x00400000 |
418 | dec edx |
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419 | jnz @B |
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420 | |||
421 | mov edi, new_app_base |
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422 | shr edi, 10 |
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423 | add edi, pages_tab |
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269 | serge | 424 | |
164 | serge | 425 | mov ecx, [app_tabs] |
426 | shl ecx, 10 |
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427 | xor eax, eax |
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428 | rep stosd |
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429 | |||
269 | serge | 430 | mov ecx, [img_pages] |
431 | mov ebx, PG_UW |
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164 | serge | 432 | mov edx, new_app_base |
269 | serge | 433 | mov esi, [img_base] |
434 | mov edi, new_app_base |
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435 | shr esi, 10 |
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436 | shr edi, 10 |
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437 | add esi, pages_tab |
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438 | add edi, pages_tab |
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439 | .remap: |
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440 | lodsd |
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441 | or eax, ebx ; force user level r/w access |
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442 | stosd |
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443 | add edx, 0x1000 |
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444 | dec [app_pages] |
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445 | dec ecx |
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446 | jnz .remap |
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447 | |||
448 | mov ecx, [app_pages] |
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449 | test ecx, ecx |
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450 | jz .done |
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451 | |||
452 | if GREEDY_KERNEL |
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453 | mov eax, 0x02 |
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454 | .reserve: |
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455 | stosd |
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456 | invlpg [edx] |
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457 | add edx, 4096 |
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458 | dec ecx |
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459 | jnz .reserve |
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460 | else |
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461 | |||
164 | serge | 462 | .alloc: |
463 | call alloc_page |
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464 | test eax, eax |
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465 | jz .fail |
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466 | |||
467 | stdcall map_page,edx,eax,dword PG_UW |
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468 | add edx, 0x1000 |
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269 | serge | 469 | dec [app_pages] |
164 | serge | 470 | jnz .alloc |
471 | |||
269 | serge | 472 | end if |
164 | serge | 473 | |
269 | serge | 474 | .done: |
164 | serge | 475 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
476 | |||
477 | dec [pg_data.pg_mutex] |
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478 | mov eax, [dir_addr] |
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479 | ret |
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480 | .fail: |
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481 | dec [pg_data.pg_mutex] |
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482 | cmp [dir_addr], 0 |
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357 | serge | 483 | je @f |
164 | serge | 484 | stdcall destroy_app_space, [dir_addr] |
485 | @@: |
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486 | xor eax, eax |
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487 | ret |
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488 | endp |
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489 | |||
490 | align 4 |
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491 | set_cr3: |
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492 | mov esi, [CURRENT_TASK] |
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493 | mov ebx, esi |
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494 | shl esi,8 |
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495 | mov [PROC_BASE+esi+0xB8],eax |
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496 | imul ebx,tss_step |
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497 | add ebx,tss_data |
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498 | mov [ebx+28], eax |
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499 | mov cr3, eax |
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500 | ret |
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501 | |||
502 | align 4 |
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503 | proc destroy_page_table stdcall, pg_tab:dword |
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504 | |||
505 | push esi |
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506 | |||
507 | mov esi, [pg_tab] |
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508 | mov ecx, 1024 |
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509 | .free: |
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510 | mov eax, [esi] |
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511 | test eax, 1 |
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512 | jz .next |
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513 | call free_page |
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514 | .next: |
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515 | add esi, 4 |
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516 | dec ecx |
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517 | jnz .free |
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518 | pop esi |
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519 | ret |
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520 | endp |
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521 | |||
522 | align 4 |
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523 | proc destroy_app_space stdcall, pg_dir:dword |
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524 | |||
276 | serge | 525 | mov ebx, pg_data.pg_mutex |
526 | call wait_mutex ;ebx |
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164 | serge | 527 | |
528 | xor edx,edx |
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529 | mov eax,0x2 |
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530 | mov ebx, [pg_dir] |
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531 | |||
532 | .loop: |
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533 | ;eax = current slot of process |
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534 | mov ecx,eax |
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535 | shl ecx,5 |
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536 | cmp byte [CURRENT_TASK+ecx+0xa],9 ;if process running? |
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537 | jz @f ;skip empty slots |
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538 | shl ecx,3 |
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539 | cmp [PROC_BASE+ecx+0xB8],ebx ;compare page directory addresses |
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540 | jnz @f |
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541 | inc edx ;thread found |
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542 | @@: |
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543 | inc eax |
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544 | cmp eax,[TASK_COUNT] ;exit loop if we look through all processes |
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545 | jle .loop |
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546 | |||
547 | ;edx = number of threads |
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548 | ;our process is zombi so it isn't counted |
||
549 | cmp edx,1 |
||
550 | jg .exit |
||
551 | ;if there isn't threads then clear memory. |
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552 | |||
553 | mov eax, [pg_dir] |
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554 | and eax, not 0xFFF |
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555 | stdcall map_page,[tmp_task_pdir],eax,dword PG_SW |
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556 | mov esi, [tmp_task_pdir] |
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188 | serge | 557 | add esi, 0x604 |
164 | serge | 558 | mov edi, 383 |
559 | .destroy: |
||
560 | mov eax, [esi] |
||
561 | test eax, 1 |
||
562 | jz .next |
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563 | and eax, not 0xFFF |
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564 | stdcall map_page,[tmp_task_ptab],eax,dword PG_SW |
||
565 | stdcall destroy_page_table, [tmp_task_ptab] |
||
566 | mov eax, [esi] |
||
567 | call free_page |
||
568 | .next: |
||
569 | add esi, 4 |
||
570 | dec edi |
||
571 | jnz .destroy |
||
572 | |||
573 | mov eax, [pg_dir] |
||
574 | call free_page |
||
575 | .exit: |
||
576 | stdcall map_page,[tmp_task_ptab],dword 0,dword PG_UNMAP |
||
577 | stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP |
||
578 | dec [pg_data.pg_mutex] |
||
579 | ret |
||
580 | endp |
||
581 | |||
582 | pid_to_slot: |
||
583 | ;Input: |
||
584 | ; eax - pid of process |
||
585 | ;Output: |
||
586 | ; eax - slot of process or 0 if process don't exists |
||
587 | ;Search process by PID. |
||
588 | push ebx |
||
589 | push ecx |
||
590 | mov ebx,[TASK_COUNT] |
||
591 | shl ebx,5 |
||
592 | mov ecx,2*32 |
||
593 | |||
594 | .loop: |
||
595 | ;ecx=offset of current process info entry |
||
596 | ;ebx=maximum permitted offset |
||
597 | cmp byte [CURRENT_TASK+ecx+0xa],9 |
||
598 | jz .endloop ;skip empty slots |
||
599 | cmp [CURRENT_TASK+ecx+0x4],eax ;check PID |
||
600 | jz .pid_found |
||
601 | .endloop: |
||
602 | add ecx,32 |
||
603 | cmp ecx,ebx |
||
604 | jle .loop |
||
605 | |||
606 | pop ecx |
||
607 | pop ebx |
||
608 | xor eax,eax |
||
609 | ret |
||
610 | |||
611 | .pid_found: |
||
612 | shr ecx,5 |
||
613 | mov eax,ecx ;convert offset to index of slot |
||
614 | pop ecx |
||
615 | pop ebx |
||
616 | ret |
||
617 | |||
618 | check_region: |
||
619 | ;input: |
||
620 | ; ebx - start of buffer |
||
621 | ; ecx - size of buffer |
||
622 | ;result: |
||
623 | ; eax = 1 region lays in app memory |
||
624 | ; eax = 0 region don't lays in app memory |
||
625 | mov eax,[CURRENT_TASK] |
||
626 | jmp check_process_region |
||
627 | ;----------------------------------------------------------------------------- |
||
628 | check_process_region: |
||
629 | ;input: |
||
630 | ; eax - slot |
||
631 | ; ebx - start of buffer |
||
632 | ; ecx - size of buffer |
||
633 | ;result: |
||
634 | ; eax = 1 region lays in app memory |
||
635 | ; eax = 0 region don't lays in app memory |
||
636 | |||
637 | test ecx,ecx |
||
638 | jle .ok |
||
639 | shl eax,5 |
||
640 | cmp word [CURRENT_TASK+eax+0xa],0 |
||
641 | jnz .failed |
||
642 | shl eax,3 |
||
643 | mov eax,[PROC_BASE+eax+0xb8] |
||
644 | test eax,eax |
||
645 | jz .failed |
||
646 | |||
647 | mov eax,1 |
||
648 | ret |
||
649 | |||
650 | |||
651 | ; call MEM_Get_Linear_Address |
||
652 | ; push ebx |
||
653 | ; push ecx |
||
654 | ; push edx |
||
655 | ; mov edx,ebx |
||
656 | ; and edx,not (4096-1) |
||
657 | ; sub ebx,edx |
||
658 | ; add ecx,ebx |
||
659 | ; mov ebx,edx |
||
660 | ; add ecx,(4096-1) |
||
661 | ; and ecx,not (4096-1) |
||
662 | ;.loop: |
||
663 | ;;eax - linear address of page directory |
||
664 | ;;ebx - current page |
||
665 | ;;ecx - current size |
||
666 | ; mov edx,ebx |
||
667 | ; shr edx,22 |
||
668 | ; mov edx,[eax+4*edx] |
||
669 | ; and edx,not (4096-1) |
||
670 | ; test edx,edx |
||
671 | ; jz .failed1 |
||
672 | ; push eax |
||
673 | ; mov eax,edx |
||
674 | ; call MEM_Get_Linear_Address |
||
675 | ; mov edx,ebx |
||
676 | ; shr edx,12 |
||
677 | ; and edx,(1024-1) |
||
678 | ; mov eax,[eax+4*edx] |
||
679 | ; and eax,not (4096-1) |
||
680 | ; test eax,eax |
||
681 | ; pop eax |
||
682 | ; jz .failed1 |
||
683 | ; add ebx,4096 |
||
684 | ; sub ecx,4096 |
||
685 | ; jg .loop |
||
686 | ; pop edx |
||
687 | ; pop ecx |
||
688 | ; pop ebx |
||
689 | .ok: |
||
690 | mov eax,1 |
||
691 | ret |
||
692 | ; |
||
693 | ;.failed1: |
||
694 | ; pop edx |
||
695 | ; pop ecx |
||
696 | ; pop ebx |
||
697 | .failed: |
||
698 | xor eax,eax |
||
699 | ret |
||
700 | |||
701 | align 4 |
||
702 | proc read_process_memory |
||
703 | ;Input: |
||
704 | ; eax - process slot |
||
705 | ; ebx - buffer address |
||
706 | ; ecx - buffer size |
||
707 | ; edx - start address in other process |
||
708 | ;Output: |
||
709 | ; eax - number of bytes read. |
||
710 | locals |
||
711 | slot dd ? |
||
712 | buff dd ? |
||
713 | r_count dd ? |
||
714 | offset dd ? |
||
715 | tmp_r_cnt dd ? |
||
716 | endl |
||
717 | |||
718 | mov [slot], eax |
||
719 | mov [buff], ebx |
||
720 | mov [r_count], ecx |
||
721 | mov [tmp_r_cnt], ecx |
||
722 | mov [offset], edx |
||
723 | |||
724 | pushad |
||
725 | .read_mem: |
||
726 | mov edx, [offset] |
||
727 | mov ebx, [tmp_r_cnt] |
||
728 | |||
729 | mov ecx, 0x400000 |
||
730 | and edx, 0x3FFFFF |
||
731 | sub ecx, edx |
||
732 | cmp ecx, ebx |
||
733 | jbe @f |
||
734 | mov ecx, ebx |
||
735 | @@: |
||
736 | cmp ecx, 0x8000 |
||
737 | jna @F |
||
738 | mov ecx, 0x8000 |
||
739 | @@: |
||
740 | mov eax, [slot] |
||
741 | shl eax,8 |
||
742 | mov ebx, [offset] |
||
743 | add ebx, new_app_base |
||
744 | push ecx |
||
745 | stdcall map_memEx, [proc_mem_map],\ |
||
746 | [PROC_BASE+eax+0xB8],\ |
||
747 | ebx, ecx |
||
748 | pop ecx |
||
749 | |||
750 | mov esi, [offset] |
||
751 | and esi, 0xfff |
||
752 | add esi, [proc_mem_map] |
||
753 | mov edi, [buff] |
||
754 | mov edx, ecx |
||
755 | rep movsb |
||
756 | |||
757 | add [offset], edx |
||
758 | sub [tmp_r_cnt], edx |
||
759 | jnz .read_mem |
||
760 | |||
761 | popad |
||
762 | mov eax, [r_count] |
||
763 | ret |
||
764 | endp |
||
765 | |||
766 | align 4 |
||
767 | proc write_process_memory |
||
768 | ;Input: |
||
769 | ; eax - process slot |
||
770 | ; ebx - buffer address |
||
771 | ; ecx - buffer size |
||
772 | ; edx - start address in other process |
||
773 | ;Output: |
||
774 | ; eax - number of bytes written |
||
775 | |||
776 | locals |
||
777 | slot dd ? |
||
778 | buff dd ? |
||
779 | w_count dd ? |
||
780 | offset dd ? |
||
781 | tmp_w_cnt dd ? |
||
782 | endl |
||
783 | |||
784 | mov [slot], eax |
||
785 | mov [buff], ebx |
||
786 | mov [w_count], ecx |
||
787 | mov [tmp_w_cnt], ecx |
||
788 | mov [offset], edx |
||
789 | |||
790 | pushad |
||
791 | .read_mem: |
||
792 | mov edx, [offset] |
||
793 | mov ebx, [tmp_w_cnt] |
||
794 | |||
795 | mov ecx, 0x400000 |
||
796 | and edx, 0x3FFFFF |
||
797 | sub ecx, edx |
||
798 | cmp ecx, ebx |
||
799 | jbe @f |
||
800 | mov ecx, ebx |
||
801 | @@: |
||
802 | cmp ecx, 0x8000 |
||
803 | jna @F |
||
804 | mov ecx, 0x8000 |
||
805 | @@: |
||
806 | mov eax, [slot] |
||
807 | shl eax,8 |
||
808 | mov ebx, [offset] |
||
809 | add ebx, new_app_base |
||
810 | push ecx |
||
811 | stdcall map_memEx, [proc_mem_map],\ |
||
812 | [PROC_BASE+eax+0xB8],\ |
||
813 | ebx, ecx |
||
814 | pop ecx |
||
815 | |||
816 | mov edi, [offset] |
||
817 | and edi, 0xfff |
||
818 | add edi, [proc_mem_map] |
||
819 | mov esi, [buff] |
||
820 | mov edx, ecx |
||
821 | rep movsb |
||
822 | |||
823 | add [offset], edx |
||
824 | sub [tmp_w_cnt], edx |
||
825 | jnz .read_mem |
||
826 | |||
827 | popad |
||
828 | mov eax, [w_count] |
||
829 | ret |
||
830 | endp |
||
831 | |||
832 | align 4 |
||
833 | proc new_sys_threads |
||
834 | locals |
||
835 | slot dd ? |
||
237 | serge | 836 | app_cmdline dd ? ;0x00 |
837 | app_path dd ? ;0x04 |
||
838 | app_eip dd ? ;0x08 |
||
839 | app_esp dd ? ;0x0C |
||
840 | app_mem dd ? ;0x10 |
||
164 | serge | 841 | endl |
842 | |||
237 | serge | 843 | cmp eax,1 |
844 | jne .failed ;other subfunctions |
||
164 | serge | 845 | |
237 | serge | 846 | xor eax,eax |
847 | mov [app_cmdline], eax |
||
848 | mov [app_path], eax |
||
849 | mov [app_eip], ebx |
||
850 | mov [app_esp], ecx |
||
164 | serge | 851 | |
852 | mov esi,new_process_loading |
||
853 | call sys_msg_board_str |
||
854 | .wait_lock: |
||
855 | cmp [application_table_status],0 |
||
856 | je .get_lock |
||
857 | call change_task |
||
858 | jmp .wait_lock |
||
859 | |||
860 | .get_lock: |
||
861 | mov eax, 1 |
||
862 | xchg eax, [application_table_status] |
||
863 | cmp eax, 0 |
||
864 | jne .wait_lock |
||
865 | |||
866 | call set_application_table_status |
||
867 | |||
868 | call get_new_process_place |
||
869 | test eax, eax |
||
870 | jz .failed |
||
871 | |||
872 | mov [slot], eax |
||
873 | |||
874 | mov esi,[CURRENT_TASK] |
||
875 | shl esi,8 |
||
876 | add esi,PROC_BASE |
||
237 | serge | 877 | mov ebx,esi ;ebx=esi - pointer to extended information about current thread |
164 | serge | 878 | |
237 | serge | 879 | mov edi, eax |
164 | serge | 880 | shl edi,8 |
881 | add edi,PROC_BASE |
||
237 | serge | 882 | mov edx,edi ;edx=edi - pointer to extended infomation about new thread |
164 | serge | 883 | mov ecx,256/4 |
237 | serge | 884 | xor eax, eax |
885 | cld |
||
886 | rep stosd ;clean extended information about new thread |
||
887 | mov esi,ebx |
||
164 | serge | 888 | mov edi,edx |
889 | mov ecx,11 |
||
237 | serge | 890 | rep movsb ;copy process name |
164 | serge | 891 | |
237 | serge | 892 | mov eax,[ebx+APPDATA.heap_base] |
893 | mov [edx+APPDATA.heap_base], eax |
||
164 | serge | 894 | |
237 | serge | 895 | mov ecx,[ebx+APPDATA.heap_top] |
896 | mov [edx+APPDATA.heap_top], ecx |
||
897 | |||
898 | mov eax,[ebx+APPDATA.mem_size] |
||
899 | mov [edx+APPDATA.mem_size], eax |
||
900 | |||
901 | mov ecx,[ebx+APPDATA.dir_table] |
||
902 | mov [edx+APPDATA.dir_table],ecx ;copy page directory |
||
903 | |||
904 | lea eax, [app_cmdline] |
||
905 | stdcall set_app_params ,[slot],eax,dword 0,\ |
||
906 | dword 0,dword 0 |
||
907 | |||
164 | serge | 908 | mov esi,new_process_running |
909 | call sys_msg_board_str ;output information about succefull startup |
||
910 | |||
911 | mov [application_table_status],0 ;unlock application_table_status mutex |
||
912 | mov eax,[process_number] ;set result |
||
913 | ret |
||
914 | .failed: |
||
915 | mov [application_table_status],0 |
||
916 | mov eax,-1 |
||
917 | ret |
||
918 | endp |
||
919 | |||
276 | serge | 920 | ; param |
921 | ; ebx=mutex |
||
922 | |||
164 | serge | 923 | align 4 |
276 | serge | 924 | wait_mutex: |
925 | push eax |
||
926 | push ebx |
||
321 | diamond | 927 | .do_wait: |
164 | serge | 928 | cmp dword [ebx],0 |
929 | je .get_lock |
||
930 | call change_task |
||
321 | diamond | 931 | jmp .do_wait |
164 | serge | 932 | .get_lock: |
933 | mov eax, 1 |
||
934 | xchg eax, [ebx] |
||
935 | test eax, eax |
||
321 | diamond | 936 | jnz .do_wait |
276 | serge | 937 | pop ebx |
938 | pop eax |
||
164 | serge | 939 | ret |
940 | |||
237 | serge | 941 | align 4 |
942 | proc set_app_params stdcall,slot:dword, params:dword,\ |
||
943 | cmd_line:dword, app_path:dword, flags:dword |
||
164 | serge | 944 | |
357 | serge | 945 | locals |
946 | pl0_stack dd ? |
||
947 | endl |
||
237 | serge | 948 | |
357 | serge | 949 | stdcall kernel_alloc, 0x2000 |
950 | mov [pl0_stack], eax |
||
951 | |||
952 | lea edi, [eax+0x2000-512] |
||
953 | |||
954 | mov eax, [slot] |
||
955 | mov ebx, eax |
||
956 | |||
957 | shl eax, 8 |
||
237 | serge | 958 | mov [eax+PROC_BASE+APPDATA.fpu_state], edi |
959 | mov [eax+PROC_BASE+APPDATA.fpu_handler], 0 |
||
960 | mov [eax+PROC_BASE+APPDATA.sse_handler], 0 |
||
357 | serge | 961 | |
962 | mov esi, fpu_data |
||
237 | serge | 963 | mov ecx, 512/4 |
964 | rep movsd |
||
965 | |||
357 | serge | 966 | cmp ebx,[TASK_COUNT] |
967 | jle .noinc |
||
968 | inc dword [TASK_COUNT] ;update number of processes |
||
237 | serge | 969 | .noinc: |
281 | serge | 970 | shl ebx,8 |
354 | serge | 971 | lea edx, [ebx+PROC_BASE+APP_EV_OFFSET] |
972 | mov [PROC_BASE+APPDATA.fd_ev+ebx],edx |
||
973 | mov [PROC_BASE+APPDATA.bk_ev+ebx],edx |
||
974 | |||
975 | add edx, APP_OBJ_OFFSET-APP_EV_OFFSET |
||
281 | serge | 976 | mov [PROC_BASE+APPDATA.fd_obj+ebx],edx |
977 | mov [PROC_BASE+APPDATA.bk_obj+ebx],edx |
||
237 | serge | 978 | |
281 | serge | 979 | mov ecx, [def_cursor] |
980 | mov [PROC_BASE+APPDATA.cursor+ebx],ecx |
||
357 | serge | 981 | mov eax, [pl0_stack] |
982 | mov [PROC_BASE+APPDATA.pl0_stack+ebx],eax |
||
281 | serge | 983 | |
984 | shr ebx,3 |
||
237 | serge | 985 | mov eax, new_app_base |
986 | mov dword [CURRENT_TASK+ebx+0x10],eax |
||
987 | |||
988 | .add_command_line: |
||
989 | mov edx,[params] |
||
990 | mov edx,[edx] ;app_cmdline |
||
991 | test edx,edx |
||
992 | jz @F ;application don't need parameters |
||
281 | serge | 993 | |
994 | mov eax, edx |
||
995 | add eax, 256 |
||
996 | jc @f |
||
997 | |||
998 | cmp eax, [PROC_BASE+APPDATA.mem_size+ebx*8] |
||
999 | ja @f |
||
1000 | |||
237 | serge | 1001 | add edx, new_app_base |
262 | diamond | 1002 | stdcall k_strncpy, edx, [cmd_line], 256 |
237 | serge | 1003 | @@: |
1004 | mov edx,[params] |
||
1005 | mov edx, [edx+4] ;app_path |
||
1006 | test edx,edx |
||
1007 | jz @F ;application don't need path of file |
||
262 | diamond | 1008 | mov eax, edx |
1009 | add eax, 1024 |
||
1010 | jc @f |
||
1011 | cmp eax, [PROC_BASE+APPDATA.mem_size+ebx*8] |
||
1012 | ja @f |
||
237 | serge | 1013 | add edx, new_app_base |
262 | diamond | 1014 | stdcall k_strncpy, edx, [app_path], 1024 |
237 | serge | 1015 | @@: |
1016 | mov ebx,[slot] |
||
1017 | mov eax,ebx |
||
1018 | shl ebx,5 |
||
1019 | ; set window state to 'normal' (non-minimized/maximized/rolled-up) state |
||
1020 | mov [ebx+window_data+WDATA.fl_wstate], WSTATE_NORMAL |
||
1021 | mov [ebx+window_data+WDATA.fl_redraw], 1 |
||
1022 | add ebx,CURRENT_TASK ;ebx - pointer to information about process |
||
1023 | mov [ebx+TASKDATA.wnd_number],al;set window number on screen = process slot |
||
1024 | |||
1025 | mov [ebx+TASKDATA.event_mask],dword 1+2+4 ;set default event flags (see 40 function) |
||
1026 | |||
1027 | inc dword [process_number] |
||
1028 | mov eax,[process_number] |
||
1029 | mov [ebx+4],eax ;set PID |
||
1030 | |||
1031 | mov ecx,ebx |
||
1032 | add ecx,(draw_data-CURRENT_TASK) ;ecx - pointer to draw data |
||
1033 | ;set draw data to full screen |
||
1034 | |||
1035 | mov [ecx+0],dword 0 |
||
1036 | mov [ecx+4],dword 0 |
||
1037 | mov eax,[SCR_X_SIZE] |
||
1038 | mov [ecx+8],eax |
||
1039 | mov eax,[SCR_Y_SIZE] |
||
1040 | mov [ecx+12],eax |
||
1041 | |||
1042 | mov edi,[slot] |
||
1043 | imul edi,tss_step |
||
1044 | add edi,tss_data |
||
1045 | mov ecx,128/4 |
||
1046 | xor eax, eax |
||
1047 | cld |
||
1048 | rep stosd |
||
1049 | ;Add IO access table - bit array of permitted ports |
||
1050 | not eax |
||
1051 | mov ecx,2048 |
||
1052 | rep stosd ; access to 4096*8=65536 ports |
||
1053 | sub edi, tss_step |
||
1054 | |||
1055 | ;set cr3 register in TSS of application |
||
1056 | mov ecx, [slot] |
||
1057 | shl ecx, 8 |
||
1058 | mov eax,[PROC_BASE+ecx+APPDATA.dir_table] |
||
1059 | mov [edi+TSS._cr3],eax |
||
1060 | |||
1061 | mov esi,[params] |
||
1062 | mov eax, [esi+0x08] ;app_eip |
||
1063 | mov [edi+TSS._eip],eax ;set eip in TSS |
||
1064 | mov eax, [esi+0x0C] ;app_esp |
||
1065 | mov [edi+TSS._esp],eax ;set stack in TSS |
||
273 | diamond | 1066 | mov [edi+TSS._eflags],dword 0x1202 |
237 | serge | 1067 | |
1068 | mov [edi+TSS._cs],app_code ;selector of code segment |
||
1069 | mov [edi+TSS._ss],app_data |
||
1070 | mov [edi+TSS._ds],app_data |
||
1071 | mov [edi+TSS._es],app_data |
||
1072 | mov [edi+TSS._fs],app_data |
||
1073 | mov [edi+TSS._gs],graph_data ;selector of graphic segment |
||
1074 | mov [edi+TSS._io],word 128 |
||
1075 | mov [edi+TSS._ss0], os_data |
||
357 | serge | 1076 | mov ebx, [pl0_stack] |
1077 | add ebx, 0x2000-512 |
||
237 | serge | 1078 | mov [edi+TSS._esp0],ebx |
1079 | |||
1080 | mov ecx, edi ;ecx - address of application TSS |
||
1081 | mov ebx,[slot] |
||
1082 | shl ebx,3 |
||
1083 | ;set TSS descriptor |
||
1084 | mov [ebx+gdts+tss0+0],word tss_step ;limit (size) |
||
1085 | mov [ebx+gdts+tss0+2],cx ;part of offset |
||
1086 | shr ecx,16 |
||
1087 | mov [ebx+gdts+tss0+4],cl ;part of offset |
||
1088 | mov [ebx+gdts+tss0+7],ch ;part of offset |
||
1089 | mov [ebx+gdts+tss0+5],word 01010000b*256+11101001b ;system flags |
||
1090 | |||
1091 | ;flush keyboard and buttons queue |
||
1092 | mov [KEY_COUNT],byte 0 |
||
1093 | mov [BTN_COUNT],byte 0 |
||
1094 | |||
1095 | mov edi,[slot] |
||
1096 | shl edi,5 |
||
1097 | add edi,window_data |
||
1098 | mov ebx,[slot] |
||
1099 | movzx esi,word [WIN_STACK+ebx*2] |
||
1100 | lea esi,[WIN_POS+esi*2] |
||
1101 | call windowactivate ;gui initialization |
||
1102 | |||
1103 | mov ebx,[slot] |
||
1104 | shl ebx,5 |
||
1105 | mov [CURRENT_TASK+ebx+0xa],byte 0 ;set process state - running |
||
1106 | ; set if debuggee |
||
1107 | mov eax, [flags] |
||
1108 | test byte [flags], 1 |
||
1109 | jz .no_debug |
||
1110 | mov [CURRENT_TASK+ebx+0xa],byte 1 ;set process state - suspended |
||
1111 | mov eax,[CURRENT_TASK] |
||
1112 | mov [PROC_BASE+ebx*8+0xac],eax ;set debugger PID - current |
||
1113 | .no_debug: |
||
1114 | mov esi,new_process_running |
||
1115 | call sys_msg_board_str ;output information about succefull startup |
||
1116 | ret |
||
1117 | endp |
||
1118 | |||
1119 | |||
1120 | |||
164 | serge | 1121 | include "debug.inc" |
1122 | |||
1123 | iglobal |
||
1124 | new_process_loading db 'K : New Process - loading',13,10,0 |
||
1125 | new_process_running db 'K : New Process - done',13,10,0 |
||
1126 | start_not_enough_memory db 'K : New Process - not enough memory',13,10,0 |
||
1127 | endg256 |
||
1128 |