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Rev | Author | Line No. | Line |
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1 | ha | 1 | if ~defined newprocess_inc |
2 | newprocess_inc_fix: |
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3 | newprocess_inc fix newprocess_inc_fix |
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4 | include "mem.inc" |
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5 | include "memmanag.inc" |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | ;;Working with new types of processes. |
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8 | ;;Author: Khalyavin Andrey halyavin@land.ru |
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9 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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10 | iglobal |
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11 | new_process_loading db 'K : New Process - loading',13,10,0 |
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12 | new_process_running db 'K : New Process - done',13,10,0 |
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13 | start_not_enough_memory db 'K : New Process - not enough memory',13,10,0 |
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14 | endg |
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15 | ;----------------------------------------------------------------------------- |
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16 | |||
17 | find_new_process_place: |
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18 | ;input: |
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19 | ; none |
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20 | ;result: |
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21 | ; eax=[new_process_place]<>0 - ok |
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22 | ; 0 - failed. |
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23 | ;This function find least empty slot. |
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24 | ;It doesn't increase [0x3004]! |
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25 | mov eax,0x3000+second_base_address |
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26 | push ebx |
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27 | mov ebx,[0x3004] |
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28 | inc ebx |
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29 | shl ebx,5 |
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30 | add ebx,eax ;ebx - address of process information for (last+1) slot |
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31 | .newprocessplace: |
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32 | ;eax = address of process information for current slot |
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33 | cmp eax,ebx |
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34 | jz .endnewprocessplace ;empty slot after high boundary |
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35 | add eax,0x20 |
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36 | cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty |
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37 | jnz .newprocessplace |
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38 | .endnewprocessplace: |
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39 | mov ebx,eax |
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40 | sub eax,0x3000+second_base_address |
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41 | shr eax,5 ;calculate slot index |
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42 | cmp eax,256 |
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43 | jge .failed ;it should be <256 |
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44 | mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary) |
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45 | mov [new_process_place],eax ;save process slot |
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46 | pop ebx |
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47 | ret |
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48 | .failed: |
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49 | xor eax,eax |
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50 | pop ebx |
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51 | ret |
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52 | ;----------------------------------------------------------------------------- |
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53 | |||
54 | new_start_application_floppy: |
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55 | ;input: |
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56 | ; eax - pointer to filename |
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57 | ; ebx - parameters to pass |
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58 | ;result: |
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59 | ; eax - pid of new process |
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60 | ; or 0 if call fails. |
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61 | pushad |
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62 | mov esi,new_process_loading |
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63 | call sys_msg_board_str ;write to debug board |
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64 | |||
65 | ;wait application_table_status mutex |
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66 | .table_status: |
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67 | cli |
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68 | cmp [application_table_status],0 |
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69 | jz .stf |
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70 | sti |
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71 | call change_task |
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72 | jmp .table_status |
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73 | .stf: |
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74 | call set_application_table_status |
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75 | ;we can change system tables now |
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76 | push edi |
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77 | push ebx |
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78 | push eax |
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79 | call find_new_process_place ;find empty process slot |
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80 | sti |
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81 | test eax,eax |
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82 | jz .failed |
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83 | |||
84 | mov edi,eax |
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85 | shl edi,8 |
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86 | add edi,0x80000 |
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87 | mov ecx,256/4 |
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88 | xor eax,eax |
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89 | cld |
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90 | rep stosd ;clean extended information about process |
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91 | |||
92 | ;set new process name |
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93 | mov eax,[esp+8] |
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94 | .find_last_byte: |
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95 | cmp byte [eax],0 |
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96 | jz .find_last_byte_end |
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97 | inc eax |
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98 | jmp .find_last_byte |
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99 | .find_last_byte_end: |
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100 | sub eax,11 ;last 11 bytes = application name |
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101 | ; mov eax,[esp] ;eax - pointer to file name |
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102 | mov ebx,[new_process_place] |
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103 | shl ebx,8 |
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104 | add ebx,0x80000 |
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105 | mov ecx,11 |
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106 | call memmove |
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107 | |||
108 | ;read header of file |
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109 | mov eax,[esp] |
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110 | mov ebx,1 ;index of first block |
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111 | mov ecx,2 ;number of blocks |
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112 | mov edx,0x90000 ;temp area |
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113 | mov esi,12 ;file name length |
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114 | mov edi,[esp+8] |
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115 | ; cli |
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116 | call floppy_fileread ;read file from FD |
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117 | ; sti |
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118 | cmp eax,0 |
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119 | jne .cleanfailed |
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120 | ;check MENUET signature |
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121 | cmp [0x90000],dword 'MENU' |
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122 | jnz .cleanfailed |
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123 | cmp [0x90004],word 'ET' |
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124 | jnz .cleanfailed |
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125 | |||
126 | call get_app_params ;parse header fields |
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127 | cmp esi,0 |
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128 | jz .cleanfailed |
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129 | |||
130 | mov eax,[new_process_place] |
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131 | call create_app_cr3_table ;create page directory for new process |
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132 | test eax,eax |
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133 | jz .cleanfailed_mem |
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134 | |||
135 | call MEM_Get_Linear_Address ;calculate linear address of it |
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136 | |||
137 | mov ebx,std_application_base_address |
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138 | mov ecx,[app_mem] |
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139 | add ecx,4095 |
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140 | shr ecx,12 |
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141 | mov edx,eax |
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142 | call mem_alloc_specified_region ;allocate memory for application |
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143 | test eax,eax |
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144 | jz .cleanfailed_mem |
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145 | |||
146 | mov eax,[edx+(std_application_base_address shr 20)] |
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147 | and eax,not (4096-1) ;eax - physical address of first (for application memory) page table |
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148 | call MEM_Get_Linear_Address |
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149 | mov edx,eax |
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150 | |||
151 | ;read file |
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152 | mov ebx,1 |
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153 | mov esi,12 ;length of file name |
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154 | .loop1: |
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155 | ;edx = linear address of current page table entry |
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156 | ;ebx = index of current block in file |
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157 | push edx |
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158 | mov eax,[edx] |
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159 | and eax,not (4096-1) |
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160 | call MEM_Get_Linear_Address |
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161 | mov edx,eax ;read file block to current page |
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162 | mov eax,[esp+4] ;restore pointer to file name |
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163 | mov ecx,8 ;number of blocks read |
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164 | push ebx |
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165 | mov edi,[esp+16] |
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166 | ; cli |
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167 | call floppy_fileread |
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168 | ;ebx=file size |
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169 | ; sti |
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170 | pop ecx |
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171 | shr ebx,9 |
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172 | cmp ecx,ebx |
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173 | jg .endloop1 ;if end of file? |
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174 | mov ebx,ecx |
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175 | test eax,eax |
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176 | jnz .endloop1 ;check io errors |
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177 | pop edx |
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178 | add ebx,8 ;go to next page |
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179 | add edx,4 |
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180 | jmp .loop1 |
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181 | |||
182 | .endloop1: |
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183 | add esp,8+4 ;pop linear address of page table entry and pointer to file name |
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184 | call new_start_application_fl.add_app_parameters |
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185 | mov [esp+28],eax |
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186 | popad |
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187 | ret |
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188 | .cleanfailed_mem: |
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189 | mov esi,start_not_enough_memory |
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190 | call sys_msg_board_str |
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191 | .cleanfailed: ;clean process name |
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192 | mov edi,[new_process_place] |
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193 | shl edi,8 |
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194 | add edi,0x80000 |
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195 | mov ecx,11 |
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196 | mov eax,' ' |
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197 | cld |
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198 | rep stosb |
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199 | .failed: |
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200 | add esp,8+4 |
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201 | mov [application_table_status],0 |
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202 | popad |
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203 | sti |
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204 | mov eax,-1 |
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205 | ret |
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206 | |||
207 | ;----------------------------------------------------------------------------- |
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208 | new_start_application_fl: |
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209 | ;input: |
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210 | ; eax - pointer to filename |
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211 | ; ebx - parameters to pass |
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212 | ;result: |
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213 | ; eax - pid of new process |
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214 | ; or 0 if call fails. |
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215 | pushad |
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216 | mov esi,new_process_loading |
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217 | call sys_msg_board_str ;write to debug board |
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218 | |||
219 | ;wait application_table_status mutex |
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220 | .table_status: |
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221 | cli |
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222 | cmp [application_table_status],0 |
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223 | jz .stf |
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224 | sti |
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225 | call change_task |
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226 | jmp .table_status |
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227 | .stf: |
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228 | call set_application_table_status |
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229 | ;we can change system tables now |
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230 | push ebx |
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231 | push eax |
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232 | call find_new_process_place ;find empty process slot |
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233 | sti |
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234 | test eax,eax |
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235 | jz .failed |
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236 | |||
237 | mov edi,eax |
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238 | shl edi,8 |
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239 | add edi,0x80000 |
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240 | mov ecx,256/4 |
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241 | xor eax,eax |
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242 | cld |
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243 | rep stosd ;clean extended information about process |
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244 | |||
245 | ;set new process name |
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246 | mov eax,[esp] ;eax - pointer to file name |
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247 | mov ebx,[new_process_place] |
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248 | shl ebx,8 |
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249 | add ebx,0x80000 |
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250 | mov ecx,11 |
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251 | call memmove |
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252 | |||
253 | ;read header of file |
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254 | mov ebx,1 ;index of first block |
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255 | mov ecx,2 ;number of blocks |
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256 | mov edx,0x90000 ;temp area |
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257 | mov esi,12 ;file name length |
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258 | cli |
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259 | call fileread ;read file from RD |
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260 | sti |
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261 | cmp eax,0 |
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262 | jne .cleanfailed |
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263 | ;check MENUET signature |
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264 | cmp [0x90000],dword 'MENU' |
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265 | jnz .cleanfailed |
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266 | cmp [0x90004],word 'ET' |
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267 | jnz .cleanfailed |
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268 | |||
269 | call get_app_params ;parse header fields |
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270 | cmp esi,0 |
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271 | jz .failed |
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272 | |||
273 | mov eax,[new_process_place] |
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274 | call create_app_cr3_table ;create page directory for new process |
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275 | test eax,eax |
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276 | jz .cleanfailed_mem |
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277 | |||
278 | call MEM_Get_Linear_Address ;calculate linear address of it |
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279 | |||
280 | mov ebx,std_application_base_address |
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281 | mov ecx,[app_mem] |
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282 | add ecx,4095 |
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283 | shr ecx,12 |
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284 | mov edx,eax |
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285 | call mem_alloc_specified_region ;allocate memory for application |
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286 | test eax,eax |
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287 | jz .cleanfailed_mem |
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288 | |||
289 | mov eax,[edx+(std_application_base_address shr 20)] |
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290 | and eax,not (4096-1) ;eax - physical address of first (for application memory) page table |
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291 | call MEM_Get_Linear_Address |
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292 | mov edx,eax |
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293 | |||
294 | ;read file |
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295 | mov ebx,1 |
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296 | mov esi,12 ;length of file name |
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297 | .loop1: |
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298 | ;edx = linear address of current page table entry |
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299 | ;ebx = index of current block in file |
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300 | push edx |
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301 | mov eax,[edx] |
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302 | and eax,not (4096-1) |
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303 | call MEM_Get_Linear_Address |
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304 | mov edx,eax ;read file block to current page |
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305 | mov eax,[esp+4] ;restore pointer to file name |
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306 | mov ecx,8 ;number of blocks read |
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307 | push ebx |
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308 | cli |
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309 | call fileread |
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310 | ;ebx=file size |
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311 | sti |
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312 | pop ecx |
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313 | shr ebx,9 |
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314 | cmp ecx,ebx |
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315 | jg .endloop1 ;if end of file? |
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316 | mov ebx,ecx |
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317 | test eax,eax |
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318 | jnz .endloop1 ;check io errors |
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319 | pop edx |
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320 | add ebx,8 ;go to next page |
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321 | add edx,4 |
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322 | jmp .loop1 |
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323 | |||
324 | .endloop1: |
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325 | add esp,8 ;pop linear address of page table entry and pointer to file name |
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326 | call .add_app_parameters |
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327 | mov [esp+28],eax |
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328 | popad |
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329 | ret |
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330 | |||
331 | .cleanfailed_mem: |
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332 | mov esi,start_not_enough_memory |
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333 | call sys_msg_board_str |
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334 | .cleanfailed: ;clean process name |
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335 | mov edi,[new_process_place] |
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336 | shl edi,8 |
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337 | add edi,0x80000 |
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338 | mov ecx,11 |
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339 | mov eax,' ' |
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340 | cld |
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341 | rep stosb |
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342 | .failed: |
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343 | add esp,8 |
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344 | mov [application_table_status],0 |
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345 | popad |
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346 | sti |
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347 | mov eax,-1 |
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348 | ret |
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349 | |||
350 | .add_app_parameters: |
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351 | ;input: |
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352 | ; [esp] - pointer to parameters |
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353 | ; [esp+4]-[esp+36] pushad registers. |
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354 | ;result |
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355 | ; eax - pid of new process |
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356 | ; or zero if failed |
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357 | cli |
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358 | mov ebx,[new_process_place] |
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359 | cmp ebx,[0x3004] |
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360 | jle .noinc |
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361 | inc dword [0x3004] ;update number of processes |
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362 | .noinc: |
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363 | |||
364 | ; mov ebx,[new_process_place] |
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365 | ;set 0x8c field of extended information about process |
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366 | ;(size of application memory) |
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367 | shl ebx,8 |
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368 | mov eax,[app_mem] |
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369 | mov [second_base_address+0x80000+0x8c+ebx],eax |
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370 | ;set 0x10 field of information about process |
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371 | ;(application base address) |
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372 | ; mov ebx,[new_process_place] |
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373 | ; shl ebx,5 |
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374 | shr ebx,3 |
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375 | mov dword [second_base_address+0x3000+ebx+0x10],std_application_base_address |
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376 | |||
377 | ;add command line parameters |
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378 | .add_command_line: |
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379 | mov edx,[app_i_param] |
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380 | test edx,edx |
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381 | jz .no_command_line ;application don't need parameters |
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382 | mov eax,[esp+4] |
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383 | test eax,eax |
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384 | jz .no_command_line ;no parameters specified |
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385 | ;calculate parameter length |
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386 | mov esi,eax |
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387 | xor ecx,ecx |
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388 | .command_line_len: |
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389 | cmp byte [esi],0 |
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390 | jz .command_line_len_end |
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391 | inc esi |
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392 | inc ecx |
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393 | cmp ecx,256 |
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394 | jl .command_line_len |
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395 | |||
396 | .command_line_len_end: |
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397 | ;ecx - parameter length |
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398 | ;edx - address of parameters in new process address space |
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399 | mov ebx,eax ;ebx - address of parameters in our address space |
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400 | mov eax,[new_process_place] |
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401 | call write_process_memory ;copy parameters to new process address space |
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402 | |||
403 | .no_command_line: |
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404 | mov ebx,[new_process_place] |
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405 | mov eax,ebx |
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406 | shl ebx,5 |
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407 | add ebx,0x3000 ;ebx - pointer to information about process |
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408 | mov [ebx+0xe],al ;set window number on screen = process slot |
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409 | |||
410 | mov [ebx],dword 1+2+4 ;set default event flags (see 40 function) |
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411 | |||
412 | inc dword [process_number] |
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413 | mov eax,[process_number] |
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414 | mov [ebx+4],eax ;set PID |
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415 | |||
416 | mov ecx,ebx |
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417 | add ecx,draw_data-0x3000 ;ecx - pointer to draw data |
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418 | ;set draw data to full screen |
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419 | mov [ecx+0],dword 0 |
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420 | mov [ecx+4],dword 0 |
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421 | mov eax,[0xfe00] |
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422 | mov [ecx+8],eax |
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423 | mov eax,[0xfe04] |
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424 | mov [ecx+12],eax |
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425 | ;set cr3 register in TSS of application |
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426 | mov ecx,[new_process_place] |
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427 | shl ecx,8 |
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428 | mov eax,[0x800B8+ecx] |
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429 | add eax,8+16 ;add flags |
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430 | mov [l.cr3],eax |
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431 | ;write cr3 in TSS of System Call Handler |
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432 | mov ecx,[new_process_place] |
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433 | shl ecx,7 |
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434 | mov [0x298000+ecx+l.cr3-tss_sceleton],eax ;write directy to TSS |
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435 | |||
436 | mov eax,[app_start] |
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437 | mov [l.eip],eax ;set eip in TSS |
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438 | mov eax,[app_esp] |
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439 | mov [l.esp],eax ;set stack in TSS |
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440 | |||
441 | ;gdt |
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442 | mov ebx,[new_process_place] |
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443 | shl ebx,3 |
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444 | mov ax,app_code ;ax - selector of code segment |
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445 | add ax,bx |
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446 | mov [l.cs],ax |
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447 | mov ax,app_data |
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448 | add ax,bx ;ax - selector of data segment |
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449 | mov [l.ss],ax |
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450 | mov [l.ds],ax |
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451 | mov [l.es],ax |
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452 | mov [l.fs],ax |
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453 | mov ax,graph_data ;ax - selector of graphic segment |
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454 | mov [l.gs],ax |
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455 | mov [l.io],word 128 |
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456 | mov [l.eflags],dword 0x11202 |
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457 | mov [l.ss0],os_data |
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3 | halyavin | 458 | shl ebx,9 |
459 | add ebx,sysint_stack_data |
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460 | mov [l.esp0],ebx |
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1 | ha | 461 | ; mov [l.esp1],0x56000 |
462 | ; mov [l.esp2],0x57000 |
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463 | |||
464 | ;copy tss to it place |
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465 | mov eax,tss_sceleton |
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466 | mov ebx,[new_process_place] |
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467 | imul ebx,tss_step |
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468 | add ebx,tss_data ;ebx - address of application TSS |
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469 | mov ecx,120 |
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470 | call memmove |
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471 | |||
472 | ;Add IO access table - bit array of permitted ports |
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473 | or eax,-1 |
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474 | mov edi,[new_process_place] |
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475 | imul edi,tss_step |
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476 | add edi,tss_data+128 |
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477 | mov ecx,2048 |
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478 | cld |
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479 | rep stosd ;full access to 2048*8=16384 ports |
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480 | |||
481 | mov ecx,ebx ;ecx - address of application TSS |
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482 | mov edi,[new_process_place] |
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483 | shl edi,3 |
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484 | ;set TSS descriptor |
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485 | mov [edi+gdts+tss0+0],word tss_step ;limit (size) |
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486 | mov [edi+gdts+tss0+2],cx ;part of offset |
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487 | mov eax,ecx |
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488 | shr eax,16 |
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489 | mov [edi+gdts+tss0+4],al ;part of offset |
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490 | mov [edi+gdts+tss0+7],ah ;part of offset |
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491 | mov [edi+gdts+tss0+5],word 01010000b*256+11101001b ;system flags |
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492 | |||
493 | ;set code and data segments |
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494 | mov eax,[new_process_place] |
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495 | shl eax,3 |
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496 | ;set base address of code segment |
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497 | mov word [eax+gdts+app_code-3+2],0 |
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498 | mov byte [eax+gdts+app_code-3+4],0 |
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499 | mov byte [eax+gdts+app_code-3+7],std_application_base_address shr 24 |
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500 | ;set limit of code segment |
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501 | ; mov ebx,[app_mem] |
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502 | ; add ebx,4095 |
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503 | ; shr ebx,12 |
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504 | mov ebx,(0x80000000-std_application_base_address) shr 12 |
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505 | mov [eax+gdts+app_code-3+0],bx |
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506 | mov [eax+gdts+app_code-3+5],word 11010000b*256+11111010b+256*((0x80000000-std_application_base_address) shr 28) |
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507 | ;set base address of data segment |
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508 | mov word [eax+gdts+app_data-3+2],0 |
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509 | mov byte [eax+gdts+app_data-3+4],0 |
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510 | mov byte [eax+gdts+app_data-3+7],std_application_base_address shr 24 |
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511 | ;set limit of data segment |
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512 | mov [eax+gdts+app_data-3+0],bx |
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513 | mov [eax+gdts+app_data-3+5],word 11010000b*256+11110010b+256*((0x80000000-std_application_base_address) shr 28) |
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514 | |||
515 | |||
516 | ;flush keyboard and buttons queue |
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517 | mov [0xf400],byte 0 |
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518 | mov [0xf500],byte 0 |
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519 | |||
520 | mov edi,[new_process_place] |
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521 | shl edi,5 |
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522 | add edi,window_data |
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523 | mov ebx,[new_process_place] |
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524 | movzx esi,word [0xC000+ebx*2] |
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525 | lea esi,[0xC400+esi*2] |
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526 | call windowactivate ;gui initialization |
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527 | |||
528 | mov ebx,[new_process_place] |
||
529 | shl ebx,5 |
||
530 | mov [0x3000+ebx+0xa],byte 0 ;set process state - running |
||
531 | |||
532 | mov esi,new_process_running |
||
533 | call sys_msg_board_str ;output information about succefull startup |
||
534 | |||
535 | ; add esp,4 ;pop pointer to parameters |
||
536 | ; popad |
||
537 | mov eax,[process_number] ;set result |
||
538 | mov [application_table_status],0 ;unlock application_table_status mutex |
||
539 | sti |
||
540 | ret 4 |
||
541 | ;----------------------------------------------------------------------------- |
||
542 | new_sys_threads: |
||
543 | ;eax=1 - create thread |
||
544 | ; ebx=thread start |
||
545 | ; ecx=thread stack value |
||
546 | ;result: |
||
547 | ; eax=pid |
||
548 | pushad |
||
549 | |||
550 | cmp eax,1 |
||
551 | jnz .ret ;other subfunctions |
||
552 | mov esi,new_process_loading |
||
553 | call sys_msg_board_str |
||
554 | ;lock application_table_status mutex |
||
555 | .table_status: |
||
556 | cli |
||
557 | cmp [application_table_status],0 |
||
558 | je .stf |
||
559 | sti |
||
560 | call change_task |
||
561 | jmp .table_status |
||
562 | .stf: |
||
563 | call set_application_table_status |
||
564 | ;find free process slot |
||
565 | |||
566 | call find_new_process_place |
||
567 | test eax,eax |
||
568 | jz .failed |
||
569 | |||
570 | ;set parameters for thread |
||
571 | xor eax,eax |
||
572 | mov [app_i_param],eax |
||
573 | mov [app_i_icon],eax |
||
574 | mov [app_start],ebx |
||
575 | mov [app_esp],ecx |
||
576 | |||
577 | mov esi,[0x3000] |
||
578 | shl esi,8 |
||
579 | add esi,0x80000 |
||
580 | mov ebx,esi ;ebx=esi - pointer to extended information about current thread |
||
581 | |||
582 | mov edi,[new_process_place] |
||
583 | shl edi,8 |
||
584 | add edi,0x80000 |
||
585 | mov edx,edi ;edx=edi - pointer to extended infomation about new thread |
||
586 | mov ecx,256/4 |
||
587 | rep stosd ;clean extended information about new thread |
||
588 | mov edi,edx |
||
589 | mov ecx,11 |
||
590 | rep movsb ;copy process name |
||
591 | mov eax,[ebx+0x8c] |
||
592 | mov [app_mem],eax ;set memory size |
||
593 | mov eax,[ebx+0xb8] |
||
594 | mov [edx+0xb8],eax ;copy page directory |
||
595 | ; mov eax,[new_process_place] |
||
596 | ; mov ebx,[0x3000] |
||
597 | ; call addreference_app_cr3_table |
||
598 | |||
599 | push 0 ;no parameters |
||
600 | call new_start_application_fl.add_app_parameters ;start thread |
||
601 | mov [esp+28],eax |
||
602 | popad |
||
603 | ret |
||
604 | |||
605 | .failed: |
||
606 | sti |
||
607 | popad |
||
608 | mov eax,-1 |
||
609 | ret |
||
610 | .ret: |
||
611 | popad |
||
612 | ret |
||
613 | ;----------------------------------------------------------------------------- |
||
614 | new_mem_resize: |
||
615 | ;input: |
||
616 | ; ebx - new size |
||
617 | ;result: |
||
618 | ; [esp+36]:=0 - normal |
||
619 | ; [esp+36]:=1 - error |
||
620 | ;This function set new application memory size. |
||
621 | mov esi,ebx ;save new size |
||
622 | add ebx,4095 |
||
623 | and ebx,not (4096-1) ;round up size |
||
624 | mov ecx,[0x3000] |
||
625 | shl ecx,8 |
||
626 | mov edx,[0x8008C+ecx] |
||
627 | add edx,4095 |
||
628 | and edx,not (4096-1) ;old size |
||
629 | mov eax,[0x800B8+ecx] |
||
630 | call MEM_Get_Linear_Address |
||
631 | ;eax - linear address of page directory |
||
632 | call MEM_Heap_Lock ;guarantee that two threads willn't |
||
633 | ;change memory size simultaneously |
||
634 | cmp ebx,edx |
||
635 | ; mov esi,ebx ;save new size |
||
636 | jg .expand |
||
637 | |||
638 | .free: |
||
639 | sub edx,ebx |
||
640 | jz .unlock ;do nothing |
||
641 | mov ecx,edx |
||
642 | shr ecx,12 |
||
643 | add ebx,std_application_base_address |
||
644 | call mem_free_specified_region ;free unnecessary pages |
||
645 | jmp .unlock |
||
646 | |||
647 | .expand: |
||
648 | sub ebx,edx |
||
649 | mov ecx,ebx |
||
650 | shr ecx,12 |
||
651 | mov ebx,edx |
||
652 | add ebx,std_application_base_address |
||
653 | call mem_alloc_specified_region ;alloc necessary pages |
||
654 | test eax,eax |
||
655 | jz .failed ;not enough memory |
||
656 | |||
657 | .unlock: |
||
658 | mov ebx,esi |
||
659 | mov eax,[0x3000] |
||
660 | shl eax,8 |
||
661 | mov [eax+0x8008c],ebx ;write new memory size |
||
662 | ;search threads and update |
||
663 | ;application memory size infomation |
||
664 | mov ecx,[eax+0x800b8] |
||
665 | mov eax,2 |
||
666 | |||
667 | .search_threads: |
||
668 | ;eax = current slot |
||
669 | ;ebx = new memory size |
||
670 | ;ecx = page directory |
||
671 | cmp eax,[0x3004] |
||
672 | jg .search_threads_end |
||
673 | mov edx,eax |
||
674 | shl edx,5 |
||
675 | cmp word [0x3000+edx+0xa],9 ;if slot empty? |
||
676 | jz .search_threads_next |
||
677 | shl edx,3 |
||
678 | cmp [edx+0x800b8],ecx ;if it is our thread? |
||
679 | jnz .search_threads_next |
||
680 | mov [edx+0x8008c],ebx ;update memory size |
||
681 | .search_threads_next: |
||
682 | inc eax |
||
683 | jmp .search_threads |
||
684 | .search_threads_end: |
||
685 | |||
686 | call MEM_Heap_UnLock |
||
687 | mov dword [esp+36],0 |
||
688 | ret |
||
689 | |||
690 | .failed: |
||
691 | call MEM_Heap_UnLock |
||
692 | mov dword [esp+36],1 |
||
693 | ret |
||
694 | ;----------------------------------------------------------------------------- |
||
695 | pid_to_slot: |
||
696 | ;Input: |
||
697 | ; eax - pid of process |
||
698 | ;Output: |
||
699 | ; eax - slot of process or 0 if process don't exists |
||
700 | ;Search process by PID. |
||
701 | push ebx |
||
702 | push ecx |
||
703 | mov ebx,[0x3004] |
||
704 | shl ebx,5 |
||
705 | mov ecx,2*32 |
||
706 | |||
707 | .loop: |
||
708 | ;ecx=offset of current process info entry |
||
709 | ;ebx=maximum permitted offset |
||
710 | cmp byte [second_base_address+0x3000+ecx+0xa],9 |
||
711 | jz .endloop ;skip empty slots |
||
712 | cmp [second_base_address+0x3000+ecx+0x4],eax ;check PID |
||
713 | jz .pid_found |
||
714 | .endloop: |
||
715 | add ecx,32 |
||
716 | cmp ecx,ebx |
||
717 | jle .loop |
||
718 | |||
719 | pop ecx |
||
720 | pop ebx |
||
721 | xor eax,eax |
||
722 | ret |
||
723 | |||
724 | .pid_found: |
||
725 | shr ecx,5 |
||
726 | mov eax,ecx ;convert offset to index of slot |
||
727 | pop ecx |
||
728 | pop ebx |
||
729 | ret |
||
730 | ;----------------------------------------------------------------------------- |
||
731 | is_new_process: |
||
732 | ;Input: |
||
733 | ; eax - process slot |
||
734 | ;Output: |
||
735 | ; eax=1 - it is new process |
||
736 | ; eax=0 - it is old process |
||
737 | ; shl eax,5 |
||
738 | ; mov eax,[second_base_address+0x3000+eax+0x10] |
||
739 | ; cmp eax,std_application_base_address ;check base address of application |
||
740 | ; jz .new_process |
||
741 | ; xor eax,eax |
||
742 | ; ret |
||
743 | |||
744 | ;.new_process: |
||
745 | mov eax,1 |
||
746 | ret |
||
747 | ;----------------------------------------------------------------------------- |
||
748 | write_process_memory: |
||
749 | ;Input: |
||
750 | ; eax - process slot |
||
751 | ; ebx - buffer address |
||
752 | ; ecx - buffer size |
||
753 | ; edx - start address in other process |
||
754 | ;Output: |
||
755 | ; eax - number of bytes written |
||
756 | pushad |
||
757 | shl eax,8 |
||
758 | mov eax,[0x80000+eax+0xB8] |
||
759 | call MEM_Get_Linear_Address |
||
760 | mov ebp,eax |
||
761 | ;ebp=linear address of page directory of other process. |
||
762 | add edx,std_application_base_address ;convert to linear address |
||
763 | test ecx,ecx |
||
764 | jle .ret |
||
765 | |||
766 | .write_loop: |
||
767 | ;ebx = current buffer address |
||
768 | ;ecx>0 = current size |
||
769 | ;edx = current address in other process |
||
770 | ;ebp = linear address of page directory |
||
771 | |||
772 | call MEM_Heap_Lock ;cli |
||
773 | mov esi,edx |
||
774 | shr esi,22 |
||
775 | mov eax,[ebp+4*esi] ;find page directory entry |
||
776 | and eax,not (4096-1) ;clear flags |
||
777 | test eax,eax |
||
778 | jz .page_not_found |
||
779 | call MEM_Get_Linear_Address ;calculate linear address of page table |
||
780 | test eax,eax |
||
781 | jz .page_not_found |
||
782 | mov esi,edx |
||
783 | shr esi,12 |
||
784 | and esi,1023 |
||
785 | mov eax,[eax+4*esi] ;find page table entry |
||
786 | and eax,not (4096-1) |
||
787 | test eax,eax |
||
788 | jz .page_not_found |
||
789 | call MEM_Get_Linear_Address ;calculate linear address of page |
||
790 | test eax,eax |
||
791 | jz .page_not_found |
||
792 | mov edi,eax |
||
793 | call MEM_Add_Reference_Linear;guarantee that page willn't disappear |
||
794 | call MEM_Heap_UnLock ;sti |
||
795 | |||
796 | mov esi,edx |
||
797 | and esi,4095 |
||
798 | add edi,esi ;add offset in page |
||
799 | ;edi = linear address corresponding edx in other process |
||
800 | sub esi,4096 |
||
801 | neg esi ;esi - number of remaining bytes in page |
||
802 | cmp esi,ecx |
||
803 | jl .min_ecx |
||
804 | mov esi,ecx |
||
805 | .min_ecx: ;esi=min(ecx,esi) - number of bytes to write |
||
806 | sub ecx,esi |
||
807 | push ecx |
||
808 | mov ecx,esi ;ecx - number of bytes to write |
||
809 | mov esi,ebx ;esi - source, edi - destination |
||
810 | add edx,ecx ;move pointer in address space of other process |
||
811 | push edi |
||
812 | |||
813 | ;move ecx bytes |
||
814 | test ecx,3 |
||
815 | jnz .not_aligned |
||
816 | shr ecx,2 |
||
817 | rep movsd |
||
818 | jmp .next_iter |
||
819 | .not_aligned: |
||
820 | rep movsb |
||
821 | .next_iter: |
||
822 | |||
823 | pop eax |
||
824 | and eax,not (4096-1) ;eax - linear address of current page |
||
825 | call MEM_Free_Page_Linear ;free reference |
||
826 | mov ebx,esi ;new pointer to buffer - movsb automaticaly advance it. |
||
827 | pop ecx ;restore number of remaining bytes |
||
828 | test ecx,ecx |
||
829 | jnz .write_loop |
||
830 | .ret: |
||
831 | popad |
||
832 | mov eax,ecx |
||
833 | ret |
||
834 | |||
835 | .page_not_found: |
||
836 | call MEM_Heap_UnLock ;error has appeared in critical region |
||
837 | sub ecx,[esp+24] ;[esp+24]<-->ecx |
||
838 | neg ecx ;ecx=number_of_written_bytes |
||
839 | mov [esp+28],ecx ;[esp+28]<-->eax |
||
840 | popad |
||
841 | ret |
||
842 | ;----------------------------------------------------------------------------- |
||
843 | syscall_test: |
||
844 | ;for testing memory manager from applications. |
||
845 | mov edx,ecx |
||
846 | mov ecx,ebx |
||
847 | call trans_address |
||
848 | mov ebx,eax |
||
849 | mov eax,[0x3000] |
||
850 | call read_process_memory |
||
851 | ret |
||
852 | ;----------------------------------------------------------------------------- |
||
853 | read_process_memory: |
||
854 | ;Input: |
||
855 | ; eax - process slot |
||
856 | ; ebx - buffer address |
||
857 | ; ecx - buffer size |
||
858 | ; edx - start address in other process |
||
859 | ;Output: |
||
860 | ; eax - number of bytes read. |
||
861 | pushad |
||
862 | shl eax,8 |
||
863 | mov eax,[0x80000+eax+0xB8] |
||
864 | call MEM_Get_Linear_Address |
||
865 | mov ebp,eax |
||
866 | add edx,std_application_base_address |
||
867 | .read_loop: |
||
868 | ;ebx = current buffer address |
||
869 | ;ecx>0 = current size |
||
870 | ;edx = current address in other process |
||
871 | ;ebp = linear address of page directory |
||
872 | |||
873 | call MEM_Heap_Lock ;cli |
||
874 | mov esi,edx |
||
875 | shr esi,22 |
||
876 | mov eax,[ebp+4*esi] ;find page directory entry |
||
877 | and eax,not (4096-1) |
||
878 | test eax,eax |
||
879 | jz .page_not_found |
||
880 | call MEM_Get_Linear_Address |
||
881 | test eax,eax |
||
882 | jz .page_not_found |
||
883 | mov esi,edx |
||
884 | shr esi,12 |
||
885 | and esi,1023 |
||
886 | mov eax,[eax+4*esi] ;find page table entry |
||
887 | and eax,not (4096-1) |
||
888 | test eax,eax |
||
889 | jz .page_not_found |
||
890 | call MEM_Get_Linear_Address ;calculate linear address of page |
||
891 | test eax,eax |
||
892 | jz .page_not_found |
||
893 | mov esi,eax |
||
894 | call MEM_Add_Reference_Linear;guarantee that page willn't disappear |
||
895 | call MEM_Heap_UnLock ;sti |
||
896 | |||
897 | mov edi,edx |
||
898 | and edi,4095 |
||
899 | add esi,edi ;add offset in page |
||
900 | ;esi = linear address corresponding edx in other process |
||
901 | sub edi,4096 |
||
902 | neg edi |
||
903 | |||
904 | ;edi=min(edi,ecx) - number of bytes to copy |
||
905 | cmp edi,ecx |
||
906 | jl .min_ecx |
||
907 | mov edi,ecx |
||
908 | .min_ecx: |
||
909 | |||
910 | sub ecx,edi ;update size of remaining bytes |
||
911 | add edx,edi ;update current pointer in other address space. |
||
912 | push ecx |
||
913 | mov ecx,edi ;ecx - number of bytes to read |
||
914 | mov edi,ebx ;esi - source, edi - destination |
||
915 | push esi |
||
916 | ;move ecx bytes |
||
917 | test ecx,3 |
||
918 | jnz .not_aligned |
||
919 | shr ecx,2 |
||
920 | rep movsd |
||
921 | jmp .next_iter |
||
922 | .not_aligned: |
||
923 | rep movsb |
||
924 | .next_iter: |
||
925 | pop eax |
||
926 | and eax,not (4096-1) ;eax - linear address of current page |
||
927 | call MEM_Free_Page_Linear ;free reference |
||
928 | mov ebx,edi ;new pointer to buffer - movsb automaticaly advance it. |
||
929 | pop ecx ;restore number of remaining bytes |
||
930 | test ecx,ecx |
||
931 | jnz .read_loop |
||
932 | |||
933 | popad |
||
934 | mov eax,ecx |
||
935 | ret |
||
936 | |||
937 | .page_not_found: |
||
938 | call MEM_Heap_UnLock ;error has appeared in critical region |
||
939 | sub ecx,[esp+24] ;[esp+24]<-->ecx |
||
940 | neg ecx ;ecx=number_of_read_bytes |
||
941 | mov [esp+28],ecx ;[esp+28]<-->eax |
||
942 | popad |
||
943 | ret |
||
944 | ;----------------------------------------------------------------------------- |
||
945 | check_region: |
||
946 | ;input: |
||
947 | ; ebx - start of buffer |
||
948 | ; ecx - size of buffer |
||
949 | ;result: |
||
950 | ; eax = 1 region lays in app memory |
||
951 | ; eax = 0 region don't lays in app memory |
||
952 | mov eax,[0x3000] |
||
953 | jmp check_process_region |
||
954 | ;----------------------------------------------------------------------------- |
||
955 | check_process_region: |
||
956 | ;input: |
||
957 | ; eax - slot |
||
958 | ; ebx - start of buffer |
||
959 | ; ecx - size of buffer |
||
960 | ;result: |
||
961 | ; eax = 1 region lays in app memory |
||
962 | ; eax = 0 region don't lays in app memory |
||
963 | test ecx,ecx |
||
964 | jle .ok |
||
965 | shl eax,5 |
||
966 | cmp word [0x3000+eax+0xa],0 |
||
967 | jnz .failed |
||
968 | shl eax,3 |
||
969 | mov eax,[0x80000+eax+0xb8] |
||
970 | test eax,eax |
||
971 | jz .failed |
||
972 | call MEM_Get_Linear_Address |
||
973 | push ebx |
||
974 | push ecx |
||
975 | push edx |
||
976 | mov edx,ebx |
||
977 | and edx,not (4096-1) |
||
978 | sub ebx,edx |
||
979 | add ecx,ebx |
||
980 | mov ebx,edx |
||
981 | add ecx,(4096-1) |
||
982 | and ecx,not (4096-1) |
||
983 | .loop: |
||
984 | ;eax - linear address of page directory |
||
985 | ;ebx - current page |
||
986 | ;ecx - current size |
||
987 | mov edx,ebx |
||
988 | shr edx,22 |
||
989 | mov edx,[eax+4*edx] |
||
990 | and edx,not (4096-1) |
||
991 | test edx,edx |
||
992 | jz .failed1 |
||
993 | push eax |
||
994 | mov eax,edx |
||
995 | call MEM_Get_Linear_Address |
||
996 | mov edx,ebx |
||
997 | shr edx,12 |
||
998 | and edx,(1024-1) |
||
999 | mov eax,[eax+4*edx] |
||
1000 | and eax,not (4096-1) |
||
1001 | test eax,eax |
||
1002 | pop eax |
||
1003 | jz .failed1 |
||
1004 | add ebx,4096 |
||
1005 | sub ecx,4096 |
||
1006 | jg .loop |
||
1007 | pop edx |
||
1008 | pop ecx |
||
1009 | pop ebx |
||
1010 | .ok: |
||
1011 | mov eax,1 |
||
1012 | ret |
||
1013 | |||
1014 | .failed1: |
||
1015 | pop edx |
||
1016 | pop ecx |
||
1017 | pop ebx |
||
1018 | .failed: |
||
1019 | xor eax,eax |
||
1020 | ret |
||
1021 | ;----------------------------------------------------------------------------- |
||
1022 | new_sys_ipc: |
||
1023 | ;input: |
||
1024 | ; eax=1 - set ipc buffer area |
||
1025 | ; ebx=address of buffer |
||
1026 | ; ecx=size of buffer |
||
1027 | ; eax=2 - send message |
||
1028 | ; ebx=PID |
||
1029 | ; ecx=address of message |
||
1030 | ; edx=size of message |
||
1031 | cmp eax,1 |
||
1032 | jnz .no_ipc_def |
||
1033 | ;set ipc buffer area |
||
1034 | mov edi,[0x3000] |
||
1035 | shl edi,8 |
||
1036 | add edi,0x80000 |
||
1037 | cli |
||
1038 | mov [edi+0xA0],ebx ;set fields in extended information area |
||
1039 | mov [edi+0xA4],ecx |
||
1040 | sti |
||
1041 | mov [esp+36],dword 0 ;success |
||
1042 | ret |
||
1043 | |||
1044 | .no_ipc_def: |
||
1045 | cmp eax,2 |
||
1046 | jnz .no_ipc_send |
||
1047 | ;send message |
||
1048 | cli |
||
1049 | ;obtain slot from PID |
||
1050 | mov eax,ebx |
||
1051 | call pid_to_slot |
||
1052 | test eax,eax |
||
1053 | jz .no_pid |
||
1054 | mov ebp,eax |
||
1055 | ;ebp = slot of other process |
||
1056 | shl eax,8 |
||
1057 | mov edi,[eax+0x80000+0xa0] ;is ipc area defined? |
||
1058 | test edi,edi |
||
1059 | jz .no_ipc_area |
||
1060 | mov esi,[eax+0x80000+0xa4] ;esi - size of buffer |
||
1061 | push dword -1 ;temp variable for read_process_memory |
||
1062 | mov ebx,esp |
||
1063 | push ecx |
||
1064 | push edx |
||
1065 | mov ecx,4 ;read 4 bytes |
||
1066 | mov eax,ebp |
||
1067 | mov edx,edi ;from beginning of buffer. |
||
1068 | call read_process_memory |
||
1069 | mov eax,[esp+8] |
||
1070 | test eax,eax |
||
1071 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
1072 | add edx,4 ;move to next 4 bytes |
||
1073 | mov eax,ebp |
||
1074 | call read_process_memory ;read size of occupied space in buffer |
||
1075 | sub esi,8 |
||
1076 | sub esi,[esp] |
||
1077 | sub esi,[esp+8] ;esi=(buffer size)-(occupied size)-(message size)-(header of message size) |
||
1078 | js .buffer_overflow ;esi<0 - not enough memory in buffer |
||
1079 | mov esi,[esp+8] ;previous offset |
||
1080 | add dword [esp+8],8 |
||
1081 | mov edi,[esp] |
||
1082 | add [esp+8],edi ;add (size of message)+(size of header of message) to [buffer+4] |
||
1083 | mov eax,ebp |
||
1084 | call write_process_memory |
||
1085 | add edx,esi |
||
1086 | sub edx,4 ;move to beginning of place for our message |
||
1087 | mov eax,[second_base_address+0x3010] |
||
1088 | mov eax,[eax+0x4] ;eax - our PID |
||
1089 | mov [esp+8],eax |
||
1090 | mov eax,ebp |
||
1091 | call write_process_memory ;write PID |
||
1092 | mov ebx,esp ;address of size of message |
||
1093 | mov eax,ebp |
||
1094 | add edx,4 |
||
1095 | call write_process_memory ;write size of message |
||
1096 | add edx,4 |
||
1097 | pop ecx ;ecx - size of message |
||
1098 | pop eax |
||
1099 | call trans_address |
||
1100 | mov ebx,eax ;ebx - linear address of message |
||
1101 | add esp,4 ;pop temporary variable |
||
1102 | mov eax,ebp |
||
1103 | call write_process_memory ;write message |
||
1104 | sti |
||
1105 | ;awake other process |
||
1106 | shl ebp,8 |
||
1107 | mov eax,ebp |
||
1108 | or [eax+0x800A8],dword 0x40 |
||
1109 | |||
1110 | cmp dword [check_idle_semaphore],20 |
||
1111 | jge .ipc_no_cis |
||
1112 | mov dword [check_idle_semaphore],5 |
||
1113 | .ipc_no_cis: |
||
1114 | mov dword [esp+36],0 |
||
1115 | ret |
||
1116 | .no_ipc_send: |
||
1117 | mov dword [esp+36],-1 |
||
1118 | ret |
||
1119 | .no_pid: |
||
1120 | sti |
||
1121 | mov dword [esp+36],4 |
||
1122 | ret |
||
1123 | .no_ipc_area: |
||
1124 | sti |
||
1125 | mov dword [esp+36],1 |
||
1126 | ret |
||
1127 | .ipc_blocked: |
||
1128 | sti |
||
1129 | add esp,12 |
||
1130 | mov dword [esp+36],2 |
||
1131 | ret |
||
1132 | .buffer_overflow: |
||
1133 | sti |
||
1134 | add esp,12 |
||
1135 | mov dword [esp+36],3 |
||
1136 | ret |
||
1137 | ;----------------------------------------------------------------------------- |
||
1138 | trans_address: |
||
1139 | ;Input |
||
1140 | ; eax - application address |
||
1141 | ;Output |
||
1142 | ; eax - linear address for kernel |
||
1143 | add eax,std_application_base_address |
||
1144 | ret |
||
1145 | ;----------------------------------------------------------------------------- |
||
1146 | new_start_application_hd: |
||
1147 | ;eax - file name (kernel address) |
||
1148 | ;ebx - file name length |
||
1149 | ;ecx - work area (kernel address) |
||
1150 | ;ebp - parameters |
||
1151 | pushad |
||
1152 | |||
1153 | mov esi,new_process_loading |
||
1154 | call sys_msg_board_str ;write message to message board |
||
1155 | |||
1156 | ;lock application_table_status mutex |
||
1157 | .table_status: |
||
1158 | cli |
||
1159 | cmp [application_table_status],0 |
||
1160 | jz .stf |
||
1161 | sti |
||
1162 | call change_task |
||
1163 | jmp .table_status |
||
1164 | .stf: |
||
1165 | call set_application_table_status |
||
1166 | |||
1167 | push ebp |
||
1168 | push ebx |
||
1169 | push eax |
||
1170 | push ecx |
||
1171 | call find_new_process_place ;find new process slot |
||
1172 | sti |
||
1173 | test eax,eax |
||
1174 | jz .failed |
||
1175 | |||
1176 | ;write application name |
||
1177 | mov eax,[esp+4] |
||
1178 | .find_last_byte: |
||
1179 | cmp byte [eax],0 |
||
1180 | jz .find_last_byte_end |
||
1181 | inc eax |
||
1182 | jmp .find_last_byte |
||
1183 | .find_last_byte_end: |
||
1184 | lea esi,[eax-11] ;last 11 bytes = application name |
||
1185 | mov edi,[new_process_place] |
||
1186 | shl edi,8 |
||
1187 | add edi,0x80000 |
||
1188 | mov ecx,11 |
||
1189 | cld |
||
1190 | rep movsb ;copy name to extended information about process |
||
1191 | |||
1192 | ;read header |
||
1193 | mov eax,[esp+4] ;file name |
||
1194 | mov esi,[esp] ;work area |
||
1195 | mov ecx,1 ;read from first block |
||
1196 | mov edx,1 ;read 1 block |
||
1197 | call read_hd_file |
||
1198 | test eax,eax |
||
1199 | jnz .cleanfailed |
||
1200 | |||
1201 | mov esi,[esp] |
||
1202 | ;check menuet signature |
||
1203 | cmp [esi+1024+0],dword 'MENU' ;read_hd_file function write file to +1024 offset |
||
1204 | jnz .cleanfailed |
||
1205 | cmp [esi+1024+4],word 'ET' |
||
1206 | jnz .cleanfailed |
||
1207 | add esi,1024 |
||
1208 | mov edi,0x90000 |
||
1209 | mov ecx,512/4 |
||
1210 | cld |
||
1211 | rep movsd ;copy first block to 0x90000 address for get_app_params function |
||
1212 | call get_app_params |
||
1213 | test esi,esi |
||
1214 | jz .cleanfailed |
||
1215 | |||
1216 | mov eax,[new_process_place] |
||
1217 | call create_app_cr3_table ;create page directory |
||
1218 | test eax,eax |
||
1219 | jz .cleanfailed_mem |
||
1220 | |||
1221 | call MEM_Get_Linear_Address |
||
1222 | |||
1223 | mov ebx,std_application_base_address |
||
1224 | mov ecx,[app_mem] |
||
1225 | add ecx,4096-1 |
||
1226 | shr ecx,12 |
||
1227 | mov edx,eax ;edx - linear address of page directory |
||
1228 | call mem_alloc_specified_region ;allocate memory for application |
||
1229 | test eax,eax |
||
1230 | jz .cleanfailed_mem |
||
1231 | |||
1232 | add edx,(std_application_base_address shr 20) |
||
1233 | mov eax,[edx] |
||
1234 | and eax,not (4096-1) |
||
1235 | call MEM_Get_Linear_Address |
||
1236 | push edx ;save pointer to first page table |
||
1237 | mov edx,eax |
||
1238 | ;read file |
||
1239 | mov ecx,1 |
||
1240 | xor ebp,ebp |
||
1241 | .loop1: |
||
1242 | ;[esp] - pointer to current page directory entry |
||
1243 | ;edx - pointer to current page table |
||
1244 | ;ebp - offset in page |
||
1245 | ;ecx - current cluster |
||
1246 | push edx |
||
1247 | mov eax,[esp+12] ;file name |
||
1248 | mov ebx,[esp+16] ;file name length |
||
1249 | mov esi,[esp+8] ;work area |
||
1250 | mov edx,1 ;number of blocks to read |
||
1251 | push ecx |
||
1252 | push ebp |
||
1253 | cli |
||
1254 | call read_hd_file |
||
1255 | sti |
||
1256 | pop ebp |
||
1257 | test eax,eax |
||
1258 | jnz .endloop1 ;check io errors |
||
1259 | |||
1260 | mov esi,[esp+8+4] ;work area |
||
1261 | add esi,1024 |
||
1262 | mov eax,[esp+4] ;current page table |
||
1263 | mov eax,[eax] |
||
1264 | and eax,not (4096-1) |
||
1265 | call MEM_Get_Linear_Address;calculate linear page address |
||
1266 | lea edi,[eax+ebp] ;add page offset |
||
1267 | mov ecx,512/4 |
||
1268 | cld |
||
1269 | rep movsd ;copy data |
||
1270 | |||
1271 | pop ecx |
||
1272 | inc ecx ;next block |
||
1273 | mov eax,[app_i_end] ;todo: precalculate ([app_i_end]+4095)/4096 |
||
1274 | add eax,512-1 |
||
1275 | shr eax,9 ;calculate application image size |
||
1276 | cmp ecx,eax |
||
1277 | jg .endloop11 |
||
1278 | pop edx |
||
1279 | add ebp,512 ;new offset |
||
1280 | test ebp,4096 |
||
1281 | jz .loop1 |
||
1282 | xor ebp,ebp |
||
1283 | add edx,4 ;go to next page |
||
1284 | test edx,(4096-1) |
||
1285 | jnz .loop1 |
||
1286 | add dword [esp],4 ;go to next directory entry |
||
1287 | mov eax,[esp] |
||
1288 | mov eax,[eax] |
||
1289 | and eax,not (4096-1) |
||
1290 | call MEM_Get_Linear_Address |
||
1291 | mov edx,eax |
||
1292 | jmp .loop1 |
||
1293 | .endloop1: |
||
1294 | add esp,4 ;pop ecx |
||
1295 | .endloop11: |
||
1296 | add esp,4+4 ;pop edx, pop edx |
||
1297 | |||
1298 | ;add_app_parameters |
||
1299 | add esp,12 ;now pointer to parameters is on the top of the stack |
||
1300 | call new_start_application_fl.add_app_parameters ;start process |
||
1301 | mov [esp+28],eax |
||
1302 | popad |
||
1303 | ret |
||
1304 | |||
1305 | .cleanfailed_mem: |
||
1306 | mov esi,start_not_enough_memory |
||
1307 | call sys_msg_board_str |
||
1308 | .cleanfailed: ;clean process name |
||
1309 | mov edi,[new_process_place] |
||
1310 | shl edi,8 |
||
1311 | add edi,0x80000 |
||
1312 | mov ecx,11 |
||
1313 | mov eax,' ' |
||
1314 | cld |
||
1315 | rep stosb |
||
1316 | .failed: |
||
1317 | add esp,16 |
||
1318 | popad |
||
1319 | mov eax,-1 |
||
1320 | mov [application_table_status],0 |
||
1321 | sti |
||
1322 | ret |
||
1323 | end if0>>-->-->-->-->256 |