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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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4 | poddubny | 53 | safe_sti: |
54 | cmp byte [0xe000], 1 |
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55 | jne @f |
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56 | sti |
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57 | @@:ret |
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58 | |||
1 | ha | 59 | new_start_application_floppy: |
60 | ;input: |
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61 | ; eax - pointer to filename |
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62 | ; ebx - parameters to pass |
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40 | halyavin | 63 | ; edx - flags |
1 | ha | 64 | ;result: |
65 | ; eax - pid of new process |
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66 | ; or 0 if call fails. |
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5 | halyavin | 67 | mov [appl_path],edi |
1 | ha | 68 | pushad |
69 | mov esi,new_process_loading |
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70 | call sys_msg_board_str ;write to debug board |
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71 | |||
72 | ;wait application_table_status mutex |
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73 | .table_status: |
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74 | cli |
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75 | cmp [application_table_status],0 |
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76 | jz .stf |
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77 | sti |
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78 | call change_task |
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79 | jmp .table_status |
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80 | .stf: |
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81 | call set_application_table_status |
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82 | ;we can change system tables now |
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83 | push edi |
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84 | push ebx |
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85 | push eax |
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86 | call find_new_process_place ;find empty process slot |
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87 | sti |
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88 | test eax,eax |
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61 | halyavin | 89 | mov ecx, -0x20 ; too many processes |
1 | ha | 90 | jz .failed |
91 | |||
92 | mov edi,eax |
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93 | shl edi,8 |
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94 | add edi,0x80000 |
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95 | mov ecx,256/4 |
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96 | xor eax,eax |
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97 | cld |
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98 | rep stosd ;clean extended information about process |
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99 | |||
100 | ;set new process name |
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5 | halyavin | 101 | mov [appl_path_size],eax |
61 | halyavin | 102 | pop eax |
103 | push eax |
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1 | ha | 104 | .find_last_byte: |
105 | cmp byte [eax],0 |
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106 | jz .find_last_byte_end |
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107 | inc eax |
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5 | halyavin | 108 | inc [appl_path_size] |
1 | ha | 109 | jmp .find_last_byte |
5 | halyavin | 110 | .find_last_byte_end: |
111 | add [appl_path_size],24 |
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1 | ha | 112 | sub eax,11 ;last 11 bytes = application name |
113 | ; mov eax,[esp] ;eax - pointer to file name |
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114 | mov ebx,[new_process_place] |
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115 | shl ebx,8 |
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116 | add ebx,0x80000 |
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117 | mov ecx,11 |
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118 | call memmove |
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119 | |||
120 | ;read header of file |
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121 | mov eax,[esp] |
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122 | mov ebx,1 ;index of first block |
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123 | mov ecx,2 ;number of blocks |
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124 | mov edx,0x90000 ;temp area |
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125 | mov esi,12 ;file name length |
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126 | mov edi,[esp+8] |
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127 | ; cli |
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128 | call floppy_fileread ;read file from FD |
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129 | ; sti |
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61 | halyavin | 130 | mov ecx, eax |
131 | neg ecx |
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132 | jnz .cleanfailed |
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133 | ;check MENUET signature |
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134 | mov ecx, -0x1F ; not Menuet/Kolibri executable |
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1 | ha | 135 | cmp [0x90000],dword 'MENU' |
136 | jnz .cleanfailed |
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137 | cmp [0x90004],word 'ET' |
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138 | jnz .cleanfailed |
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139 | |||
140 | call get_app_params ;parse header fields |
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61 | halyavin | 141 | test esi, esi |
1 | ha | 142 | jz .cleanfailed |
143 | |||
144 | mov eax,[new_process_place] |
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61 | halyavin | 145 | inc ecx ; -0x1E = no memory |
1 | ha | 146 | call create_app_cr3_table ;create page directory for new process |
147 | test eax,eax |
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148 | jz .cleanfailed_mem |
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149 | |||
150 | call MEM_Get_Linear_Address ;calculate linear address of it |
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151 | |||
152 | mov ebx,std_application_base_address |
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153 | mov ecx,[app_mem] |
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154 | add ecx,4095 |
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155 | shr ecx,12 |
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156 | mov edx,eax |
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157 | call mem_alloc_specified_region ;allocate memory for application |
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158 | test eax,eax |
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61 | halyavin | 159 | mov ecx, -0x1E |
9 | halyavin | 160 | jz .cleanfailed_mem1 |
1 | ha | 161 | |
162 | mov eax,[edx+(std_application_base_address shr 20)] |
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163 | and eax,not (4096-1) ;eax - physical address of first (for application memory) page table |
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164 | call MEM_Get_Linear_Address |
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165 | mov edx,eax |
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166 | |||
167 | ;read file |
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168 | mov ebx,1 |
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169 | mov esi,12 ;length of file name |
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170 | .loop1: |
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171 | ;edx = linear address of current page table entry |
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172 | ;ebx = index of current block in file |
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173 | push edx |
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174 | mov eax,[edx] |
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175 | and eax,not (4096-1) |
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176 | call MEM_Get_Linear_Address |
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177 | mov edx,eax ;read file block to current page |
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178 | mov eax,[esp+4] ;restore pointer to file name |
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179 | mov ecx,8 ;number of blocks read |
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180 | push ebx |
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181 | mov edi,[esp+16] |
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182 | ; cli |
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183 | call floppy_fileread |
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184 | ;ebx=file size |
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185 | ; sti |
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186 | pop ecx |
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187 | shr ebx,9 |
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188 | cmp ecx,ebx |
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189 | jg .endloop1 ;if end of file? |
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190 | mov ebx,ecx |
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191 | test eax,eax |
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192 | jnz .endloop1 ;check io errors |
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193 | pop edx |
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194 | add ebx,8 ;go to next page |
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195 | add edx,4 |
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196 | jmp .loop1 |
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197 | |||
198 | .endloop1: |
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199 | add esp,8+4 ;pop linear address of page table entry and pointer to file name |
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200 | call new_start_application_fl.add_app_parameters |
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201 | mov [esp+28],eax |
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202 | popad |
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203 | ret |
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9 | halyavin | 204 | |
205 | .cleanfailed_mem1: |
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206 | ;there is mem for directory entry, but there is no mem for pages |
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207 | ;so free directory entry |
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208 | mov eax,[new_process_place] |
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209 | shl eax,8 |
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210 | mov eax,[0x80000+eax+0xB8] |
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211 | call MEM_Free_Page |
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1 | ha | 212 | .cleanfailed_mem: |
9 | halyavin | 213 | ;there is no mem for directory entry, display message. |
1 | ha | 214 | mov esi,start_not_enough_memory |
215 | call sys_msg_board_str |
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216 | .cleanfailed: ;clean process name |
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61 | halyavin | 217 | push ecx ; save error code |
9 | halyavin | 218 | ;can't read file, clean process name. |
219 | ;this avoid problems with panel application. |
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1 | ha | 220 | mov edi,[new_process_place] |
221 | shl edi,8 |
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222 | add edi,0x80000 |
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223 | mov ecx,11 |
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224 | mov eax,' ' |
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225 | cld |
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226 | rep stosb |
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61 | halyavin | 227 | pop eax |
1 | ha | 228 | .failed: |
9 | halyavin | 229 | ;no more slots |
1 | ha | 230 | add esp,8+4 |
231 | mov [application_table_status],0 |
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61 | halyavin | 232 | mov [esp+1Ch], eax |
1 | ha | 233 | popad |
234 | sti |
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235 | ret |
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236 | |||
237 | ;----------------------------------------------------------------------------- |
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238 | new_start_application_fl: |
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239 | ;input: |
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240 | ; eax - pointer to filename |
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241 | ; ebx - parameters to pass |
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40 | halyavin | 242 | ; edx - flags |
1 | ha | 243 | ;result: |
244 | ; eax - pid of new process |
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245 | ; or 0 if call fails. |
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5 | halyavin | 246 | mov [appl_path],edi |
247 | mov [appl_path_size],36 |
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1 | ha | 248 | pushad |
249 | mov esi,new_process_loading |
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250 | call sys_msg_board_str ;write to debug board |
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251 | |||
252 | ;wait application_table_status mutex |
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253 | .table_status: |
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254 | cli |
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255 | cmp [application_table_status],0 |
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256 | jz .stf |
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257 | sti |
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258 | call change_task |
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259 | jmp .table_status |
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260 | .stf: |
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261 | call set_application_table_status |
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262 | ;we can change system tables now |
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263 | push ebx |
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264 | push eax |
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265 | call find_new_process_place ;find empty process slot |
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4 | poddubny | 266 | call safe_sti |
1 | ha | 267 | test eax,eax |
61 | halyavin | 268 | mov ecx, -0x20 ; too many processes |
1 | ha | 269 | jz .failed |
270 | |||
271 | mov edi,eax |
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272 | shl edi,8 |
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273 | add edi,0x80000 |
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274 | mov ecx,256/4 |
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275 | xor eax,eax |
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276 | cld |
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277 | rep stosd ;clean extended information about process |
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278 | |||
279 | ;set new process name |
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280 | mov eax,[esp] ;eax - pointer to file name |
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281 | mov ebx,[new_process_place] |
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282 | shl ebx,8 |
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283 | add ebx,0x80000 |
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284 | mov ecx,11 |
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285 | call memmove |
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286 | |||
287 | ;read header of file |
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288 | mov ebx,1 ;index of first block |
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289 | mov ecx,2 ;number of blocks |
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290 | mov edx,0x90000 ;temp area |
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291 | mov esi,12 ;file name length |
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292 | cli |
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293 | call fileread ;read file from RD |
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4 | poddubny | 294 | call safe_sti |
61 | halyavin | 295 | mov ecx, eax |
296 | neg ecx |
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297 | jnz .cleanfailed |
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298 | ;check MENUET signature |
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299 | mov ecx, -0x1F ; not Menuet/Kolibri executable |
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1 | ha | 300 | cmp [0x90000],dword 'MENU' |
301 | jnz .cleanfailed |
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302 | cmp [0x90004],word 'ET' |
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303 | jnz .cleanfailed |
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304 | |||
305 | call get_app_params ;parse header fields |
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61 | halyavin | 306 | test esi,esi |
21 | poddubny | 307 | jz .cleanfailed |
1 | ha | 308 | |
309 | mov eax,[new_process_place] |
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91 | diamond | 310 | inc ecx ; -0x1E = no memory |
1 | ha | 311 | call create_app_cr3_table ;create page directory for new process |
312 | test eax,eax |
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313 | jz .cleanfailed_mem |
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314 | |||
315 | call MEM_Get_Linear_Address ;calculate linear address of it |
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316 | |||
317 | mov ebx,std_application_base_address |
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318 | mov ecx,[app_mem] |
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319 | add ecx,4095 |
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320 | shr ecx,12 |
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321 | mov edx,eax |
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322 | call mem_alloc_specified_region ;allocate memory for application |
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323 | test eax,eax |
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61 | halyavin | 324 | mov ecx, -0x1E |
9 | halyavin | 325 | jz .cleanfailed_mem1 |
1 | ha | 326 | |
327 | mov eax,[edx+(std_application_base_address shr 20)] |
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328 | and eax,not (4096-1) ;eax - physical address of first (for application memory) page table |
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329 | call MEM_Get_Linear_Address |
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330 | mov edx,eax |
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331 | |||
332 | ;read file |
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333 | mov ebx,1 |
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334 | mov esi,12 ;length of file name |
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335 | .loop1: |
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336 | ;edx = linear address of current page table entry |
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337 | ;ebx = index of current block in file |
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338 | push edx |
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339 | mov eax,[edx] |
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340 | and eax,not (4096-1) |
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341 | call MEM_Get_Linear_Address |
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342 | mov edx,eax ;read file block to current page |
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343 | mov eax,[esp+4] ;restore pointer to file name |
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344 | mov ecx,8 ;number of blocks read |
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345 | push ebx |
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346 | cli |
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347 | call fileread |
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348 | ;ebx=file size |
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4 | poddubny | 349 | call safe_sti |
1 | ha | 350 | pop ecx |
351 | shr ebx,9 |
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352 | cmp ecx,ebx |
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353 | jg .endloop1 ;if end of file? |
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354 | mov ebx,ecx |
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355 | test eax,eax |
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356 | jnz .endloop1 ;check io errors |
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357 | pop edx |
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358 | add ebx,8 ;go to next page |
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359 | add edx,4 |
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360 | jmp .loop1 |
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361 | |||
362 | .endloop1: |
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363 | add esp,8 ;pop linear address of page table entry and pointer to file name |
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364 | call .add_app_parameters |
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365 | mov [esp+28],eax |
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366 | popad |
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367 | ret |
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368 | |||
9 | halyavin | 369 | .cleanfailed_mem1: |
370 | ;there is mem for directory entry, but there is no mem for pages |
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371 | ;so free directory entry |
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372 | mov eax,[new_process_place] |
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373 | shl eax,8 |
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374 | mov eax,[0x80000+eax+0xB8] |
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375 | call MEM_Free_Page |
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1 | ha | 376 | .cleanfailed_mem: |
9 | halyavin | 377 | ;there is no mem for directory entry, display message. |
1 | ha | 378 | mov esi,start_not_enough_memory |
379 | call sys_msg_board_str |
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380 | .cleanfailed: ;clean process name |
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61 | halyavin | 381 | push ecx ; save error code |
9 | halyavin | 382 | ;can't read file, clean process name. |
383 | ;this avoid problems with panel application. |
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1 | ha | 384 | mov edi,[new_process_place] |
385 | shl edi,8 |
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386 | add edi,0x80000 |
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387 | mov ecx,11 |
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388 | mov eax,' ' |
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389 | cld |
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390 | rep stosb |
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61 | halyavin | 391 | pop eax |
1 | ha | 392 | .failed: |
9 | halyavin | 393 | ;no more slots |
1 | ha | 394 | add esp,8 |
395 | mov [application_table_status],0 |
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61 | halyavin | 396 | mov [esp+1Ch], eax |
1 | ha | 397 | popad |
4 | poddubny | 398 | call safe_sti |
1 | ha | 399 | ret |
400 | |||
401 | .add_app_parameters: |
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402 | ;input: |
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403 | ; [esp] - pointer to parameters |
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404 | ; [esp+4]-[esp+36] pushad registers. |
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405 | ;result |
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406 | ; eax - pid of new process |
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407 | ; or zero if failed |
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408 | cli |
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409 | mov ebx,[new_process_place] |
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410 | cmp ebx,[0x3004] |
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411 | jle .noinc |
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412 | inc dword [0x3004] ;update number of processes |
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413 | .noinc: |
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414 | |||
415 | ; mov ebx,[new_process_place] |
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416 | ;set 0x8c field of extended information about process |
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417 | ;(size of application memory) |
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418 | shl ebx,8 |
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419 | mov eax,[app_mem] |
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420 | mov [second_base_address+0x80000+0x8c+ebx],eax |
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421 | ;set 0x10 field of information about process |
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422 | ;(application base address) |
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423 | ; mov ebx,[new_process_place] |
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424 | ; shl ebx,5 |
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425 | shr ebx,3 |
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426 | mov dword [second_base_address+0x3000+ebx+0x10],std_application_base_address |
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427 | |||
428 | ;add command line parameters |
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429 | .add_command_line: |
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430 | mov edx,[app_i_param] |
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431 | test edx,edx |
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432 | jz .no_command_line ;application don't need parameters |
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433 | mov eax,[esp+4] |
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434 | test eax,eax |
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435 | jz .no_command_line ;no parameters specified |
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436 | ;calculate parameter length |
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437 | mov esi,eax |
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438 | xor ecx,ecx |
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439 | .command_line_len: |
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440 | cmp byte [esi],0 |
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441 | jz .command_line_len_end |
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442 | inc esi |
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443 | inc ecx |
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444 | cmp ecx,256 |
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445 | jl .command_line_len |
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446 | |||
447 | .command_line_len_end: |
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448 | ;ecx - parameter length |
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449 | ;edx - address of parameters in new process address space |
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450 | mov ebx,eax ;ebx - address of parameters in our address space |
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451 | mov eax,[new_process_place] |
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452 | call write_process_memory ;copy parameters to new process address space |
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453 | |||
454 | .no_command_line: |
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5 | halyavin | 455 | ;****************************************************************** |
456 | mov edx,[app_i_icon] |
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457 | test edx,edx |
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458 | jz .no_command_line_1 ;application don't need path of file |
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459 | mov ebx,[appl_path] |
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460 | mov ecx,[appl_path_size] |
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461 | mov eax,[new_process_place] |
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462 | call write_process_memory ;copy path of file to new process address space |
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463 | .no_command_line_1: |
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464 | ;****************************************************************** |
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1 | ha | 465 | mov ebx,[new_process_place] |
466 | mov eax,ebx |
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467 | shl ebx,5 |
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468 | add ebx,0x3000 ;ebx - pointer to information about process |
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469 | mov [ebx+0xe],al ;set window number on screen = process slot |
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470 | |||
471 | mov [ebx],dword 1+2+4 ;set default event flags (see 40 function) |
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472 | |||
473 | inc dword [process_number] |
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474 | mov eax,[process_number] |
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475 | mov [ebx+4],eax ;set PID |
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476 | |||
477 | mov ecx,ebx |
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478 | add ecx,draw_data-0x3000 ;ecx - pointer to draw data |
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479 | ;set draw data to full screen |
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480 | mov [ecx+0],dword 0 |
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481 | mov [ecx+4],dword 0 |
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482 | mov eax,[0xfe00] |
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483 | mov [ecx+8],eax |
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484 | mov eax,[0xfe04] |
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485 | mov [ecx+12],eax |
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41 | mikedld | 486 | ;set window state to 'normal' (non-minimized/maximized/rolled-up) state |
487 | mov [ecx+WDATA.fl_wstate],WSTATE_NORMAL |
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1 | ha | 488 | ;set cr3 register in TSS of application |
489 | mov ecx,[new_process_place] |
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490 | shl ecx,8 |
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491 | mov eax,[0x800B8+ecx] |
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492 | add eax,8+16 ;add flags |
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493 | mov [l.cr3],eax |
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494 | |||
495 | mov eax,[app_start] |
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496 | mov [l.eip],eax ;set eip in TSS |
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497 | mov eax,[app_esp] |
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498 | mov [l.esp],eax ;set stack in TSS |
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499 | |||
500 | ;gdt |
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4 | poddubny | 501 | ;mov ebx,[new_process_place] |
502 | ;shl ebx,3 |
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1 | ha | 503 | mov ax,app_code ;ax - selector of code segment |
4 | poddubny | 504 | ;add ax,bx |
1 | ha | 505 | mov [l.cs],ax |
506 | mov ax,app_data |
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4 | poddubny | 507 | ;add ax,bx ;ax - selector of data segment |
1 | ha | 508 | mov [l.ss],ax |
509 | mov [l.ds],ax |
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510 | mov [l.es],ax |
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511 | mov [l.fs],ax |
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512 | mov ax,graph_data ;ax - selector of graphic segment |
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513 | mov [l.gs],ax |
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514 | mov [l.io],word 128 |
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515 | mov [l.eflags],dword 0x11202 |
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516 | mov [l.ss0],os_data |
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4 | poddubny | 517 | mov ebx,[new_process_place] |
518 | shl ebx,12 |
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14 | poddubny | 519 | add ebx,sysint_stack_data+4096 |
3 | halyavin | 520 | mov [l.esp0],ebx |
1 | ha | 521 | |
522 | ;copy tss to it place |
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523 | mov eax,tss_sceleton |
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524 | mov ebx,[new_process_place] |
||
525 | imul ebx,tss_step |
||
526 | add ebx,tss_data ;ebx - address of application TSS |
||
527 | mov ecx,120 |
||
528 | call memmove |
||
529 | |||
530 | ;Add IO access table - bit array of permitted ports |
||
531 | or eax,-1 |
||
532 | mov edi,[new_process_place] |
||
533 | imul edi,tss_step |
||
534 | add edi,tss_data+128 |
||
535 | mov ecx,2048 |
||
536 | cld |
||
537 | rep stosd ;full access to 2048*8=16384 ports |
||
538 | |||
539 | mov ecx,ebx ;ecx - address of application TSS |
||
540 | mov edi,[new_process_place] |
||
541 | shl edi,3 |
||
542 | ;set TSS descriptor |
||
543 | mov [edi+gdts+tss0+0],word tss_step ;limit (size) |
||
544 | mov [edi+gdts+tss0+2],cx ;part of offset |
||
545 | mov eax,ecx |
||
546 | shr eax,16 |
||
547 | mov [edi+gdts+tss0+4],al ;part of offset |
||
548 | mov [edi+gdts+tss0+7],ah ;part of offset |
||
549 | mov [edi+gdts+tss0+5],word 01010000b*256+11101001b ;system flags |
||
550 | |||
551 | |||
552 | ;flush keyboard and buttons queue |
||
553 | mov [0xf400],byte 0 |
||
554 | mov [0xf500],byte 0 |
||
555 | |||
556 | mov edi,[new_process_place] |
||
557 | shl edi,5 |
||
558 | add edi,window_data |
||
559 | mov ebx,[new_process_place] |
||
560 | movzx esi,word [0xC000+ebx*2] |
||
561 | lea esi,[0xC400+esi*2] |
||
562 | call windowactivate ;gui initialization |
||
563 | |||
564 | mov ebx,[new_process_place] |
||
565 | shl ebx,5 |
||
40 | halyavin | 566 | ; set if debuggee |
91 | diamond | 567 | test byte [esp+28], 1 |
568 | jz .no_debug |
||
569 | mov [0x3000+ebx+0xa], byte 1 ; set process state - suspended |
||
570 | mov eax, [0x3000] |
||
571 | mov [0x80000+ebx*8+0xac], eax ;set debugger PID - current |
||
572 | jmp .debug |
||
40 | halyavin | 573 | .no_debug: |
91 | diamond | 574 | mov [0x3000+ebx+0xa], byte 0 ; set process state - running |
575 | .debug: |
||
1 | ha | 576 | |
577 | mov esi,new_process_running |
||
578 | call sys_msg_board_str ;output information about succefull startup |
||
579 | |||
580 | ; add esp,4 ;pop pointer to parameters |
||
581 | ; popad |
||
582 | mov eax,[process_number] ;set result |
||
583 | mov [application_table_status],0 ;unlock application_table_status mutex |
||
4 | poddubny | 584 | call safe_sti |
1 | ha | 585 | ret 4 |
586 | ;----------------------------------------------------------------------------- |
||
587 | new_sys_threads: |
||
588 | ;eax=1 - create thread |
||
589 | ; ebx=thread start |
||
590 | ; ecx=thread stack value |
||
591 | ;result: |
||
592 | ; eax=pid |
||
40 | halyavin | 593 | xor edx,edx ; flags=0 |
1 | ha | 594 | pushad |
595 | |||
596 | cmp eax,1 |
||
597 | jnz .ret ;other subfunctions |
||
598 | mov esi,new_process_loading |
||
599 | call sys_msg_board_str |
||
600 | ;lock application_table_status mutex |
||
601 | .table_status: |
||
602 | cli |
||
603 | cmp [application_table_status],0 |
||
604 | je .stf |
||
605 | sti |
||
606 | call change_task |
||
607 | jmp .table_status |
||
608 | .stf: |
||
609 | call set_application_table_status |
||
610 | ;find free process slot |
||
611 | |||
612 | call find_new_process_place |
||
613 | test eax,eax |
||
614 | jz .failed |
||
615 | |||
616 | ;set parameters for thread |
||
617 | xor eax,eax |
||
618 | mov [app_i_param],eax |
||
619 | mov [app_i_icon],eax |
||
620 | mov [app_start],ebx |
||
621 | mov [app_esp],ecx |
||
622 | |||
623 | mov esi,[0x3000] |
||
624 | shl esi,8 |
||
625 | add esi,0x80000 |
||
626 | mov ebx,esi ;ebx=esi - pointer to extended information about current thread |
||
627 | |||
628 | mov edi,[new_process_place] |
||
629 | shl edi,8 |
||
630 | add edi,0x80000 |
||
631 | mov edx,edi ;edx=edi - pointer to extended infomation about new thread |
||
632 | mov ecx,256/4 |
||
633 | rep stosd ;clean extended information about new thread |
||
634 | mov edi,edx |
||
635 | mov ecx,11 |
||
636 | rep movsb ;copy process name |
||
637 | mov eax,[ebx+0x8c] |
||
638 | mov [app_mem],eax ;set memory size |
||
639 | mov eax,[ebx+0xb8] |
||
640 | mov [edx+0xb8],eax ;copy page directory |
||
641 | ; mov eax,[new_process_place] |
||
642 | ; mov ebx,[0x3000] |
||
643 | ; call addreference_app_cr3_table |
||
644 | |||
645 | push 0 ;no parameters |
||
646 | call new_start_application_fl.add_app_parameters ;start thread |
||
647 | mov [esp+28],eax |
||
648 | popad |
||
649 | ret |
||
650 | |||
651 | .failed: |
||
652 | sti |
||
653 | popad |
||
654 | mov eax,-1 |
||
655 | ret |
||
656 | .ret: |
||
657 | popad |
||
658 | ret |
||
659 | ;----------------------------------------------------------------------------- |
||
660 | new_mem_resize: |
||
661 | ;input: |
||
662 | ; ebx - new size |
||
663 | ;result: |
||
664 | ; [esp+36]:=0 - normal |
||
665 | ; [esp+36]:=1 - error |
||
666 | ;This function set new application memory size. |
||
667 | mov esi,ebx ;save new size |
||
668 | add ebx,4095 |
||
669 | and ebx,not (4096-1) ;round up size |
||
670 | mov ecx,[0x3000] |
||
671 | shl ecx,8 |
||
672 | mov edx,[0x8008C+ecx] |
||
673 | add edx,4095 |
||
674 | and edx,not (4096-1) ;old size |
||
675 | mov eax,[0x800B8+ecx] |
||
676 | call MEM_Get_Linear_Address |
||
677 | ;eax - linear address of page directory |
||
678 | call MEM_Heap_Lock ;guarantee that two threads willn't |
||
679 | ;change memory size simultaneously |
||
680 | cmp ebx,edx |
||
681 | ; mov esi,ebx ;save new size |
||
682 | jg .expand |
||
683 | |||
684 | .free: |
||
685 | sub edx,ebx |
||
686 | jz .unlock ;do nothing |
||
687 | mov ecx,edx |
||
688 | shr ecx,12 |
||
689 | add ebx,std_application_base_address |
||
690 | call mem_free_specified_region ;free unnecessary pages |
||
691 | jmp .unlock |
||
692 | |||
693 | .expand: |
||
694 | sub ebx,edx |
||
695 | mov ecx,ebx |
||
696 | shr ecx,12 |
||
697 | mov ebx,edx |
||
698 | add ebx,std_application_base_address |
||
699 | call mem_alloc_specified_region ;alloc necessary pages |
||
700 | test eax,eax |
||
701 | jz .failed ;not enough memory |
||
702 | |||
703 | .unlock: |
||
704 | mov ebx,esi |
||
705 | mov eax,[0x3000] |
||
706 | shl eax,8 |
||
707 | mov [eax+0x8008c],ebx ;write new memory size |
||
708 | ;search threads and update |
||
709 | ;application memory size infomation |
||
710 | mov ecx,[eax+0x800b8] |
||
711 | mov eax,2 |
||
712 | |||
713 | .search_threads: |
||
714 | ;eax = current slot |
||
715 | ;ebx = new memory size |
||
716 | ;ecx = page directory |
||
717 | cmp eax,[0x3004] |
||
718 | jg .search_threads_end |
||
719 | mov edx,eax |
||
720 | shl edx,5 |
||
721 | cmp word [0x3000+edx+0xa],9 ;if slot empty? |
||
722 | jz .search_threads_next |
||
723 | shl edx,3 |
||
724 | cmp [edx+0x800b8],ecx ;if it is our thread? |
||
725 | jnz .search_threads_next |
||
726 | mov [edx+0x8008c],ebx ;update memory size |
||
727 | .search_threads_next: |
||
728 | inc eax |
||
729 | jmp .search_threads |
||
730 | .search_threads_end: |
||
731 | |||
732 | call MEM_Heap_UnLock |
||
733 | mov dword [esp+36],0 |
||
734 | ret |
||
735 | |||
736 | .failed: |
||
737 | call MEM_Heap_UnLock |
||
738 | mov dword [esp+36],1 |
||
739 | ret |
||
740 | ;----------------------------------------------------------------------------- |
||
741 | pid_to_slot: |
||
742 | ;Input: |
||
743 | ; eax - pid of process |
||
744 | ;Output: |
||
745 | ; eax - slot of process or 0 if process don't exists |
||
746 | ;Search process by PID. |
||
747 | push ebx |
||
748 | push ecx |
||
749 | mov ebx,[0x3004] |
||
750 | shl ebx,5 |
||
751 | mov ecx,2*32 |
||
752 | |||
753 | .loop: |
||
754 | ;ecx=offset of current process info entry |
||
755 | ;ebx=maximum permitted offset |
||
756 | cmp byte [second_base_address+0x3000+ecx+0xa],9 |
||
757 | jz .endloop ;skip empty slots |
||
758 | cmp [second_base_address+0x3000+ecx+0x4],eax ;check PID |
||
759 | jz .pid_found |
||
760 | .endloop: |
||
761 | add ecx,32 |
||
762 | cmp ecx,ebx |
||
763 | jle .loop |
||
764 | |||
765 | pop ecx |
||
766 | pop ebx |
||
767 | xor eax,eax |
||
768 | ret |
||
769 | |||
770 | .pid_found: |
||
771 | shr ecx,5 |
||
772 | mov eax,ecx ;convert offset to index of slot |
||
773 | pop ecx |
||
774 | pop ebx |
||
775 | ret |
||
776 | ;----------------------------------------------------------------------------- |
||
777 | is_new_process: |
||
778 | ;Input: |
||
779 | ; eax - process slot |
||
780 | ;Output: |
||
781 | ; eax=1 - it is new process |
||
782 | ; eax=0 - it is old process |
||
783 | ; shl eax,5 |
||
784 | ; mov eax,[second_base_address+0x3000+eax+0x10] |
||
785 | ; cmp eax,std_application_base_address ;check base address of application |
||
786 | ; jz .new_process |
||
787 | ; xor eax,eax |
||
788 | ; ret |
||
789 | |||
790 | ;.new_process: |
||
791 | mov eax,1 |
||
792 | ret |
||
793 | ;----------------------------------------------------------------------------- |
||
794 | write_process_memory: |
||
795 | ;Input: |
||
796 | ; eax - process slot |
||
797 | ; ebx - buffer address |
||
798 | ; ecx - buffer size |
||
799 | ; edx - start address in other process |
||
800 | ;Output: |
||
801 | ; eax - number of bytes written |
||
802 | pushad |
||
803 | shl eax,8 |
||
804 | mov eax,[0x80000+eax+0xB8] |
||
805 | call MEM_Get_Linear_Address |
||
806 | mov ebp,eax |
||
807 | ;ebp=linear address of page directory of other process. |
||
808 | add edx,std_application_base_address ;convert to linear address |
||
809 | test ecx,ecx |
||
810 | jle .ret |
||
811 | |||
812 | .write_loop: |
||
813 | ;ebx = current buffer address |
||
814 | ;ecx>0 = current size |
||
815 | ;edx = current address in other process |
||
816 | ;ebp = linear address of page directory |
||
817 | |||
818 | call MEM_Heap_Lock ;cli |
||
819 | mov esi,edx |
||
820 | shr esi,22 |
||
821 | mov eax,[ebp+4*esi] ;find page directory entry |
||
822 | and eax,not (4096-1) ;clear flags |
||
823 | test eax,eax |
||
824 | jz .page_not_found |
||
825 | call MEM_Get_Linear_Address ;calculate linear address of page table |
||
826 | test eax,eax |
||
827 | jz .page_not_found |
||
828 | mov esi,edx |
||
829 | shr esi,12 |
||
830 | and esi,1023 |
||
831 | mov eax,[eax+4*esi] ;find page table entry |
||
832 | and eax,not (4096-1) |
||
833 | test eax,eax |
||
834 | jz .page_not_found |
||
835 | call MEM_Get_Linear_Address ;calculate linear address of page |
||
836 | test eax,eax |
||
837 | jz .page_not_found |
||
838 | mov edi,eax |
||
839 | call MEM_Add_Reference_Linear;guarantee that page willn't disappear |
||
840 | call MEM_Heap_UnLock ;sti |
||
841 | |||
842 | mov esi,edx |
||
843 | and esi,4095 |
||
844 | add edi,esi ;add offset in page |
||
845 | ;edi = linear address corresponding edx in other process |
||
846 | sub esi,4096 |
||
847 | neg esi ;esi - number of remaining bytes in page |
||
848 | cmp esi,ecx |
||
849 | jl .min_ecx |
||
850 | mov esi,ecx |
||
851 | .min_ecx: ;esi=min(ecx,esi) - number of bytes to write |
||
852 | sub ecx,esi |
||
853 | push ecx |
||
854 | mov ecx,esi ;ecx - number of bytes to write |
||
855 | mov esi,ebx ;esi - source, edi - destination |
||
856 | add edx,ecx ;move pointer in address space of other process |
||
857 | push edi |
||
858 | |||
859 | ;move ecx bytes |
||
860 | test ecx,3 |
||
861 | jnz .not_aligned |
||
862 | shr ecx,2 |
||
863 | rep movsd |
||
864 | jmp .next_iter |
||
865 | .not_aligned: |
||
866 | rep movsb |
||
867 | .next_iter: |
||
868 | |||
869 | pop eax |
||
870 | and eax,not (4096-1) ;eax - linear address of current page |
||
871 | call MEM_Free_Page_Linear ;free reference |
||
872 | mov ebx,esi ;new pointer to buffer - movsb automaticaly advance it. |
||
873 | pop ecx ;restore number of remaining bytes |
||
874 | test ecx,ecx |
||
875 | jnz .write_loop |
||
876 | .ret: |
||
877 | popad |
||
878 | mov eax,ecx |
||
879 | ret |
||
880 | |||
881 | .page_not_found: |
||
882 | call MEM_Heap_UnLock ;error has appeared in critical region |
||
883 | sub ecx,[esp+24] ;[esp+24]<-->ecx |
||
884 | neg ecx ;ecx=number_of_written_bytes |
||
885 | mov [esp+28],ecx ;[esp+28]<-->eax |
||
886 | popad |
||
887 | ret |
||
888 | ;----------------------------------------------------------------------------- |
||
889 | syscall_test: |
||
890 | ;for testing memory manager from applications. |
||
891 | mov edx,ecx |
||
892 | mov ecx,ebx |
||
893 | call trans_address |
||
894 | mov ebx,eax |
||
895 | mov eax,[0x3000] |
||
896 | call read_process_memory |
||
897 | ret |
||
898 | ;----------------------------------------------------------------------------- |
||
899 | read_process_memory: |
||
900 | ;Input: |
||
901 | ; eax - process slot |
||
902 | ; ebx - buffer address |
||
903 | ; ecx - buffer size |
||
904 | ; edx - start address in other process |
||
905 | ;Output: |
||
906 | ; eax - number of bytes read. |
||
907 | pushad |
||
908 | shl eax,8 |
||
909 | mov eax,[0x80000+eax+0xB8] |
||
910 | call MEM_Get_Linear_Address |
||
911 | mov ebp,eax |
||
912 | add edx,std_application_base_address |
||
913 | .read_loop: |
||
914 | ;ebx = current buffer address |
||
915 | ;ecx>0 = current size |
||
916 | ;edx = current address in other process |
||
917 | ;ebp = linear address of page directory |
||
918 | |||
919 | call MEM_Heap_Lock ;cli |
||
920 | mov esi,edx |
||
921 | shr esi,22 |
||
922 | mov eax,[ebp+4*esi] ;find page directory entry |
||
923 | and eax,not (4096-1) |
||
924 | test eax,eax |
||
925 | jz .page_not_found |
||
926 | call MEM_Get_Linear_Address |
||
927 | test eax,eax |
||
928 | jz .page_not_found |
||
929 | mov esi,edx |
||
930 | shr esi,12 |
||
931 | and esi,1023 |
||
932 | mov eax,[eax+4*esi] ;find page table entry |
||
933 | and eax,not (4096-1) |
||
934 | test eax,eax |
||
935 | jz .page_not_found |
||
936 | call MEM_Get_Linear_Address ;calculate linear address of page |
||
937 | test eax,eax |
||
938 | jz .page_not_found |
||
939 | mov esi,eax |
||
940 | call MEM_Add_Reference_Linear;guarantee that page willn't disappear |
||
941 | call MEM_Heap_UnLock ;sti |
||
942 | |||
943 | mov edi,edx |
||
944 | and edi,4095 |
||
945 | add esi,edi ;add offset in page |
||
946 | ;esi = linear address corresponding edx in other process |
||
947 | sub edi,4096 |
||
948 | neg edi |
||
949 | |||
950 | ;edi=min(edi,ecx) - number of bytes to copy |
||
951 | cmp edi,ecx |
||
952 | jl .min_ecx |
||
953 | mov edi,ecx |
||
954 | .min_ecx: |
||
955 | |||
956 | sub ecx,edi ;update size of remaining bytes |
||
957 | add edx,edi ;update current pointer in other address space. |
||
958 | push ecx |
||
959 | mov ecx,edi ;ecx - number of bytes to read |
||
960 | mov edi,ebx ;esi - source, edi - destination |
||
961 | push esi |
||
962 | ;move ecx bytes |
||
963 | test ecx,3 |
||
964 | jnz .not_aligned |
||
965 | shr ecx,2 |
||
966 | rep movsd |
||
967 | jmp .next_iter |
||
968 | .not_aligned: |
||
969 | rep movsb |
||
970 | .next_iter: |
||
971 | pop eax |
||
972 | and eax,not (4096-1) ;eax - linear address of current page |
||
973 | call MEM_Free_Page_Linear ;free reference |
||
974 | mov ebx,edi ;new pointer to buffer - movsb automaticaly advance it. |
||
975 | pop ecx ;restore number of remaining bytes |
||
976 | test ecx,ecx |
||
977 | jnz .read_loop |
||
978 | |||
979 | popad |
||
980 | mov eax,ecx |
||
981 | ret |
||
982 | |||
983 | .page_not_found: |
||
984 | call MEM_Heap_UnLock ;error has appeared in critical region |
||
985 | sub ecx,[esp+24] ;[esp+24]<-->ecx |
||
986 | neg ecx ;ecx=number_of_read_bytes |
||
987 | mov [esp+28],ecx ;[esp+28]<-->eax |
||
988 | popad |
||
989 | ret |
||
990 | ;----------------------------------------------------------------------------- |
||
991 | check_region: |
||
992 | ;input: |
||
993 | ; ebx - start of buffer |
||
994 | ; ecx - size of buffer |
||
995 | ;result: |
||
996 | ; eax = 1 region lays in app memory |
||
997 | ; eax = 0 region don't lays in app memory |
||
998 | mov eax,[0x3000] |
||
999 | jmp check_process_region |
||
1000 | ;----------------------------------------------------------------------------- |
||
1001 | check_process_region: |
||
1002 | ;input: |
||
1003 | ; eax - slot |
||
1004 | ; ebx - start of buffer |
||
1005 | ; ecx - size of buffer |
||
1006 | ;result: |
||
1007 | ; eax = 1 region lays in app memory |
||
1008 | ; eax = 0 region don't lays in app memory |
||
1009 | test ecx,ecx |
||
1010 | jle .ok |
||
1011 | shl eax,5 |
||
1012 | cmp word [0x3000+eax+0xa],0 |
||
1013 | jnz .failed |
||
1014 | shl eax,3 |
||
1015 | mov eax,[0x80000+eax+0xb8] |
||
1016 | test eax,eax |
||
1017 | jz .failed |
||
1018 | call MEM_Get_Linear_Address |
||
1019 | push ebx |
||
1020 | push ecx |
||
1021 | push edx |
||
1022 | mov edx,ebx |
||
1023 | and edx,not (4096-1) |
||
1024 | sub ebx,edx |
||
1025 | add ecx,ebx |
||
1026 | mov ebx,edx |
||
1027 | add ecx,(4096-1) |
||
1028 | and ecx,not (4096-1) |
||
1029 | .loop: |
||
1030 | ;eax - linear address of page directory |
||
1031 | ;ebx - current page |
||
1032 | ;ecx - current size |
||
1033 | mov edx,ebx |
||
1034 | shr edx,22 |
||
1035 | mov edx,[eax+4*edx] |
||
1036 | and edx,not (4096-1) |
||
1037 | test edx,edx |
||
1038 | jz .failed1 |
||
1039 | push eax |
||
1040 | mov eax,edx |
||
1041 | call MEM_Get_Linear_Address |
||
1042 | mov edx,ebx |
||
1043 | shr edx,12 |
||
1044 | and edx,(1024-1) |
||
1045 | mov eax,[eax+4*edx] |
||
1046 | and eax,not (4096-1) |
||
1047 | test eax,eax |
||
1048 | pop eax |
||
1049 | jz .failed1 |
||
1050 | add ebx,4096 |
||
1051 | sub ecx,4096 |
||
1052 | jg .loop |
||
1053 | pop edx |
||
1054 | pop ecx |
||
1055 | pop ebx |
||
1056 | .ok: |
||
1057 | mov eax,1 |
||
1058 | ret |
||
1059 | |||
1060 | .failed1: |
||
1061 | pop edx |
||
1062 | pop ecx |
||
1063 | pop ebx |
||
1064 | .failed: |
||
1065 | xor eax,eax |
||
1066 | ret |
||
1067 | ;----------------------------------------------------------------------------- |
||
1068 | new_sys_ipc: |
||
1069 | ;input: |
||
1070 | ; eax=1 - set ipc buffer area |
||
1071 | ; ebx=address of buffer |
||
1072 | ; ecx=size of buffer |
||
1073 | ; eax=2 - send message |
||
1074 | ; ebx=PID |
||
1075 | ; ecx=address of message |
||
1076 | ; edx=size of message |
||
1077 | cmp eax,1 |
||
1078 | jnz .no_ipc_def |
||
1079 | ;set ipc buffer area |
||
1080 | mov edi,[0x3000] |
||
1081 | shl edi,8 |
||
1082 | add edi,0x80000 |
||
1083 | cli |
||
1084 | mov [edi+0xA0],ebx ;set fields in extended information area |
||
1085 | mov [edi+0xA4],ecx |
||
1086 | sti |
||
1087 | mov [esp+36],dword 0 ;success |
||
1088 | ret |
||
1089 | |||
1090 | .no_ipc_def: |
||
1091 | cmp eax,2 |
||
1092 | jnz .no_ipc_send |
||
1093 | ;send message |
||
1094 | cli |
||
1095 | ;obtain slot from PID |
||
1096 | mov eax,ebx |
||
1097 | call pid_to_slot |
||
1098 | test eax,eax |
||
1099 | jz .no_pid |
||
1100 | mov ebp,eax |
||
1101 | ;ebp = slot of other process |
||
1102 | shl eax,8 |
||
1103 | mov edi,[eax+0x80000+0xa0] ;is ipc area defined? |
||
1104 | test edi,edi |
||
1105 | jz .no_ipc_area |
||
1106 | mov esi,[eax+0x80000+0xa4] ;esi - size of buffer |
||
1107 | push dword -1 ;temp variable for read_process_memory |
||
1108 | mov ebx,esp |
||
1109 | push ecx |
||
1110 | push edx |
||
1111 | mov ecx,4 ;read 4 bytes |
||
1112 | mov eax,ebp |
||
1113 | mov edx,edi ;from beginning of buffer. |
||
1114 | call read_process_memory |
||
1115 | mov eax,[esp+8] |
||
1116 | test eax,eax |
||
1117 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
1118 | add edx,4 ;move to next 4 bytes |
||
1119 | mov eax,ebp |
||
1120 | call read_process_memory ;read size of occupied space in buffer |
||
1121 | sub esi,8 |
||
1122 | sub esi,[esp] |
||
1123 | sub esi,[esp+8] ;esi=(buffer size)-(occupied size)-(message size)-(header of message size) |
||
1124 | js .buffer_overflow ;esi<0 - not enough memory in buffer |
||
1125 | mov esi,[esp+8] ;previous offset |
||
1126 | add dword [esp+8],8 |
||
1127 | mov edi,[esp] |
||
1128 | add [esp+8],edi ;add (size of message)+(size of header of message) to [buffer+4] |
||
1129 | mov eax,ebp |
||
1130 | call write_process_memory |
||
1131 | add edx,esi |
||
1132 | sub edx,4 ;move to beginning of place for our message |
||
1133 | mov eax,[second_base_address+0x3010] |
||
1134 | mov eax,[eax+0x4] ;eax - our PID |
||
1135 | mov [esp+8],eax |
||
1136 | mov eax,ebp |
||
1137 | call write_process_memory ;write PID |
||
1138 | mov ebx,esp ;address of size of message |
||
1139 | mov eax,ebp |
||
1140 | add edx,4 |
||
1141 | call write_process_memory ;write size of message |
||
1142 | add edx,4 |
||
1143 | pop ecx ;ecx - size of message |
||
1144 | pop eax |
||
1145 | call trans_address |
||
1146 | mov ebx,eax ;ebx - linear address of message |
||
1147 | add esp,4 ;pop temporary variable |
||
1148 | mov eax,ebp |
||
1149 | call write_process_memory ;write message |
||
1150 | sti |
||
1151 | ;awake other process |
||
1152 | shl ebp,8 |
||
1153 | mov eax,ebp |
||
1154 | or [eax+0x800A8],dword 0x40 |
||
1155 | |||
1156 | cmp dword [check_idle_semaphore],20 |
||
1157 | jge .ipc_no_cis |
||
1158 | mov dword [check_idle_semaphore],5 |
||
1159 | .ipc_no_cis: |
||
1160 | mov dword [esp+36],0 |
||
1161 | ret |
||
1162 | .no_ipc_send: |
||
1163 | mov dword [esp+36],-1 |
||
1164 | ret |
||
1165 | .no_pid: |
||
1166 | sti |
||
1167 | mov dword [esp+36],4 |
||
1168 | ret |
||
1169 | .no_ipc_area: |
||
1170 | sti |
||
1171 | mov dword [esp+36],1 |
||
1172 | ret |
||
1173 | .ipc_blocked: |
||
1174 | sti |
||
1175 | add esp,12 |
||
1176 | mov dword [esp+36],2 |
||
1177 | ret |
||
1178 | .buffer_overflow: |
||
1179 | sti |
||
1180 | add esp,12 |
||
1181 | mov dword [esp+36],3 |
||
1182 | ret |
||
1183 | ;----------------------------------------------------------------------------- |
||
1184 | trans_address: |
||
1185 | ;Input |
||
1186 | ; eax - application address |
||
1187 | ;Output |
||
1188 | ; eax - linear address for kernel |
||
1189 | add eax,std_application_base_address |
||
1190 | ret |
||
1191 | ;----------------------------------------------------------------------------- |
||
1192 | new_start_application_hd: |
||
1193 | ;eax - file name (kernel address) |
||
1194 | ;ebx - file name length |
||
1195 | ;ecx - work area (kernel address) |
||
40 | halyavin | 1196 | ;edx - flags |
1 | ha | 1197 | ;ebp - parameters |
5 | halyavin | 1198 | mov [appl_path],edi |
1 | ha | 1199 | pushad |
1200 | |||
1201 | mov esi,new_process_loading |
||
1202 | call sys_msg_board_str ;write message to message board |
||
1203 | |||
1204 | ;lock application_table_status mutex |
||
1205 | .table_status: |
||
1206 | cli |
||
1207 | cmp [application_table_status],0 |
||
1208 | jz .stf |
||
1209 | sti |
||
1210 | call change_task |
||
1211 | jmp .table_status |
||
1212 | .stf: |
||
1213 | call set_application_table_status |
||
1214 | |||
1215 | push ebp |
||
1216 | push ebx |
||
1217 | push eax |
||
1218 | push ecx |
||
1219 | call find_new_process_place ;find new process slot |
||
1220 | sti |
||
1221 | test eax,eax |
||
61 | halyavin | 1222 | mov ecx, -0x20 ; too many processes |
1 | ha | 1223 | jz .failed |
1224 | |||
5 | halyavin | 1225 | ;write application name |
1226 | xor eax,eax |
||
1227 | mov [appl_path_size],eax |
||
1 | ha | 1228 | mov eax,[esp+4] |
1229 | .find_last_byte: |
||
1230 | cmp byte [eax],0 |
||
1231 | jz .find_last_byte_end |
||
1232 | inc eax |
||
5 | halyavin | 1233 | inc [appl_path_size] |
1 | ha | 1234 | jmp .find_last_byte |
5 | halyavin | 1235 | .find_last_byte_end: |
1236 | add [appl_path_size],24 |
||
1 | ha | 1237 | lea esi,[eax-11] ;last 11 bytes = application name |
1238 | mov edi,[new_process_place] |
||
1239 | shl edi,8 |
||
1240 | add edi,0x80000 |
||
1241 | mov ecx,11 |
||
1242 | cld |
||
1243 | rep movsb ;copy name to extended information about process |
||
1244 | |||
1245 | ;read header |
||
1246 | mov eax,[esp+4] ;file name |
||
1247 | mov esi,[esp] ;work area |
||
1248 | mov ecx,1 ;read from first block |
||
1249 | mov edx,1 ;read 1 block |
||
1250 | call read_hd_file |
||
61 | halyavin | 1251 | mov ecx, eax |
1252 | neg ecx |
||
1253 | jnz .cleanfailed |
||
1 | ha | 1254 | |
61 | halyavin | 1255 | pop esi |
1256 | push esi |
||
1257 | ;check menuet signature |
||
1258 | mov ecx, -0x1F ; not Menuet/Kolibri executable |
||
1 | ha | 1259 | cmp [esi+1024+0],dword 'MENU' ;read_hd_file function write file to +1024 offset |
1260 | jnz .cleanfailed |
||
1261 | cmp [esi+1024+4],word 'ET' |
||
1262 | jnz .cleanfailed |
||
1263 | add esi,1024 |
||
1264 | mov edi,0x90000 |
||
1265 | mov ecx,512/4 |
||
1266 | cld |
||
1267 | rep movsd ;copy first block to 0x90000 address for get_app_params function |
||
1268 | call get_app_params |
||
61 | halyavin | 1269 | mov ecx, -0x1F ; not Menuet/Kolibri executable |
1 | ha | 1270 | test esi,esi |
1271 | jz .cleanfailed |
||
1272 | |||
1273 | mov eax,[new_process_place] |
||
91 | diamond | 1274 | inc ecx ; -0x1E = no memory |
1 | ha | 1275 | call create_app_cr3_table ;create page directory |
1276 | test eax,eax |
||
1277 | jz .cleanfailed_mem |
||
1278 | |||
1279 | call MEM_Get_Linear_Address |
||
1280 | |||
1281 | mov ebx,std_application_base_address |
||
1282 | mov ecx,[app_mem] |
||
1283 | add ecx,4096-1 |
||
1284 | shr ecx,12 |
||
1285 | mov edx,eax ;edx - linear address of page directory |
||
1286 | call mem_alloc_specified_region ;allocate memory for application |
||
61 | halyavin | 1287 | mov ecx, -0x1E ; no memory |
1 | ha | 1288 | test eax,eax |
9 | halyavin | 1289 | jz .cleanfailed_mem1 |
1 | ha | 1290 | |
1291 | add edx,(std_application_base_address shr 20) |
||
1292 | mov eax,[edx] |
||
1293 | and eax,not (4096-1) |
||
1294 | call MEM_Get_Linear_Address |
||
1295 | push edx ;save pointer to first page table |
||
1296 | mov edx,eax |
||
1297 | ;read file |
||
1298 | mov ecx,1 |
||
1299 | xor ebp,ebp |
||
1300 | .loop1: |
||
1301 | ;[esp] - pointer to current page directory entry |
||
1302 | ;edx - pointer to current page table |
||
1303 | ;ebp - offset in page |
||
1304 | ;ecx - current cluster |
||
1305 | push edx |
||
1306 | mov eax,[esp+12] ;file name |
||
1307 | mov ebx,[esp+16] ;file name length |
||
1308 | mov esi,[esp+8] ;work area |
||
1309 | mov edx,1 ;number of blocks to read |
||
1310 | push ecx |
||
1311 | push ebp |
||
1312 | cli |
||
1313 | call read_hd_file |
||
1314 | sti |
||
1315 | pop ebp |
||
1316 | test eax,eax |
||
1317 | jnz .endloop1 ;check io errors |
||
1318 | |||
1319 | mov esi,[esp+8+4] ;work area |
||
1320 | add esi,1024 |
||
1321 | mov eax,[esp+4] ;current page table |
||
1322 | mov eax,[eax] |
||
1323 | and eax,not (4096-1) |
||
1324 | call MEM_Get_Linear_Address;calculate linear page address |
||
1325 | lea edi,[eax+ebp] ;add page offset |
||
1326 | mov ecx,512/4 |
||
1327 | cld |
||
1328 | rep movsd ;copy data |
||
1329 | |||
1330 | pop ecx |
||
1331 | inc ecx ;next block |
||
1332 | mov eax,[app_i_end] ;todo: precalculate ([app_i_end]+4095)/4096 |
||
1333 | add eax,512-1 |
||
1334 | shr eax,9 ;calculate application image size |
||
1335 | cmp ecx,eax |
||
1336 | jg .endloop11 |
||
1337 | pop edx |
||
1338 | add ebp,512 ;new offset |
||
1339 | test ebp,4096 |
||
1340 | jz .loop1 |
||
1341 | xor ebp,ebp |
||
1342 | add edx,4 ;go to next page |
||
1343 | test edx,(4096-1) |
||
1344 | jnz .loop1 |
||
1345 | add dword [esp],4 ;go to next directory entry |
||
1346 | mov eax,[esp] |
||
1347 | mov eax,[eax] |
||
1348 | and eax,not (4096-1) |
||
1349 | call MEM_Get_Linear_Address |
||
1350 | mov edx,eax |
||
1351 | jmp .loop1 |
||
1352 | .endloop1: |
||
1353 | add esp,4 ;pop ecx |
||
1354 | .endloop11: |
||
1355 | add esp,4+4 ;pop edx, pop edx |
||
1356 | |||
1357 | ;add_app_parameters |
||
1358 | add esp,12 ;now pointer to parameters is on the top of the stack |
||
1359 | call new_start_application_fl.add_app_parameters ;start process |
||
1360 | mov [esp+28],eax |
||
1361 | popad |
||
1362 | ret |
||
1363 | |||
9 | halyavin | 1364 | .cleanfailed_mem1: |
1365 | ;there is mem for directory entry, but there is no mem for pages |
||
1366 | ;so free directory entry |
||
1367 | mov eax,[new_process_place] |
||
1368 | shl eax,8 |
||
1369 | mov eax,[0x80000+eax+0xB8] |
||
1370 | call MEM_Free_Page |
||
1 | ha | 1371 | .cleanfailed_mem: |
9 | halyavin | 1372 | ;there is no mem for directory entry, display message. |
1 | ha | 1373 | mov esi,start_not_enough_memory |
1374 | call sys_msg_board_str |
||
1375 | .cleanfailed: ;clean process name |
||
61 | halyavin | 1376 | push ecx |
9 | halyavin | 1377 | ;can't read file, clean process name. |
1378 | ;this avoid problems with panel application. |
||
1 | ha | 1379 | mov edi,[new_process_place] |
1380 | shl edi,8 |
||
1381 | add edi,0x80000 |
||
1382 | mov ecx,11 |
||
1383 | mov eax,' ' |
||
1384 | cld |
||
61 | halyavin | 1385 | rep stosb |
1386 | pop eax |
||
1 | ha | 1387 | .failed: |
9 | halyavin | 1388 | ;no more slots |
1 | ha | 1389 | add esp,16 |
61 | halyavin | 1390 | mov [esp+1Ch], eax |
1391 | popad |
||
1 | ha | 1392 | mov [application_table_status],0 |
1393 | sti |
||
1394 | ret |
||
1395 | end if |
||
40 | halyavin | 1396 | |
91 | diamond | 1397 | ; \begin{diamond} |
1398 | include 'debug.inc' |
||
1399 | |||
1400 | fs_execute: |
||
1401 | ; ebx - cmdline |
||
1402 | ; edx - flags |
||
1403 | ; ebp - full filename |
||
1404 | ; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it |
||
1405 | pushad |
||
1406 | ; check filename length - with terminating NULL must be no more than 1024 symbols |
||
1407 | mov edi, ebp |
||
1408 | mov ecx, 1024 |
||
1409 | xor eax, eax |
||
1410 | repnz scasb |
||
1411 | jz @f |
||
1412 | popad |
||
1413 | mov eax, -ERROR_FILE_NOT_FOUND |
||
1414 | ret |
||
1415 | @@: |
||
1416 | |||
1417 | mov esi, new_process_loading |
||
1418 | call sys_msg_board_str ; write message to message board |
||
1419 | |||
1420 | ; lock application_table_status mutex |
||
1421 | .table_status: |
||
1422 | cli |
||
1423 | cmp [application_table_status], 0 |
||
1424 | jz .stf |
||
1425 | sti |
||
1426 | call change_task |
||
1427 | jmp .table_status |
||
1428 | .stf: |
||
1429 | call set_application_table_status |
||
1430 | push ebx ; save command line pointer for add_app_parameters |
||
1431 | |||
1432 | call find_new_process_place ; find new process slot |
||
1433 | call safe_sti |
||
1434 | test eax, eax |
||
1435 | mov ecx, -0x20 ; too many processes |
||
1436 | jz .failed |
||
1437 | |||
1438 | ; write application name |
||
1439 | push edi |
||
1440 | mov ecx, edi |
||
1441 | sub ecx, ebp |
||
1442 | mov [appl_path], ebp |
||
1443 | mov [appl_path_size], ecx |
||
1444 | dec edi |
||
1445 | std |
||
1446 | mov al, '/' |
||
1447 | repnz scasb |
||
1448 | cld |
||
1449 | jnz @f |
||
1450 | inc edi |
||
1451 | @@: |
||
1452 | inc edi |
||
1453 | ; now edi points to name without path |
||
1454 | mov esi, edi |
||
1455 | mov ecx, 8 ; 8 chars for name |
||
1456 | mov edi, [new_process_place] |
||
1457 | shl edi, cl |
||
1458 | add edi, 0x80000 |
||
1459 | .copy_process_name_loop: |
||
1460 | lodsb |
||
1461 | cmp al, '.' |
||
1462 | jz .copy_process_name_done |
||
1463 | test al, al |
||
1464 | jz .copy_process_name_done |
||
1465 | stosb |
||
1466 | loop .copy_process_name_loop |
||
1467 | .copy_process_name_done: |
||
1468 | mov al, ' ' |
||
1469 | rep stosb |
||
1470 | pop eax |
||
1471 | mov cl, 3 ; 3 chars for extension |
||
1472 | dec esi |
||
1473 | @@: |
||
1474 | dec eax |
||
1475 | cmp eax, esi |
||
1476 | jbe .copy_process_ext_done |
||
1477 | cmp byte [eax], '.' |
||
1478 | jnz @b |
||
1479 | lea esi, [eax+1] |
||
1480 | .copy_process_ext_loop: |
||
1481 | lodsb |
||
1482 | test al, al |
||
1483 | jz .copy_process_ext_done |
||
1484 | stosb |
||
1485 | loop .copy_process_ext_loop |
||
1486 | .copy_process_ext_done: |
||
1487 | mov al, ' ' |
||
1488 | rep stosb |
||
1489 | |||
1490 | ; read header |
||
1491 | lea eax, [esp+8+36] |
||
1492 | mov edi, 0x90000 |
||
1493 | call dword [eax-4] |
||
1494 | mov ecx, eax |
||
1495 | neg ecx |
||
1496 | jnz .cleanfailed |
||
1497 | ; check menuet signature |
||
1498 | mov ecx, -0x1F |
||
1499 | cmp dword [0x90000], 'MENU' |
||
1500 | jnz .cleanfailed |
||
1501 | cmp word [0x90004], 'ET' |
||
1502 | jnz .cleanfailed |
||
1503 | call get_app_params |
||
1504 | mov ecx, -0x1F |
||
1505 | test esi, esi |
||
1506 | jz .cleanfailed |
||
1507 | |||
1508 | mov eax, [new_process_place] |
||
1509 | inc ecx ; -0x1E = no memory |
||
1510 | call create_app_cr3_table |
||
1511 | test eax, eax |
||
1512 | jz .cleanfailed_mem |
||
1513 | |||
1514 | call MEM_Get_Linear_Address |
||
1515 | |||
1516 | mov ebx, std_application_base_address |
||
1517 | mov ecx, [app_mem] |
||
1518 | add ecx, 4095 |
||
1519 | shr ecx, 12 |
||
1520 | mov edx, eax ; edx - linear address of page directory |
||
1521 | call mem_alloc_specified_region |
||
1522 | mov ecx, -0x1E ; no memory |
||
1523 | test eax, eax |
||
1524 | jz .cleanfailed_mem1 |
||
1525 | |||
1526 | add edx, std_application_base_address shr 20 |
||
1527 | mov eax, [edx] |
||
1528 | and eax, not 4095 |
||
1529 | call MEM_Get_Linear_Address |
||
1530 | push edx ; save pointer to first page table |
||
1531 | mov edx, eax |
||
1532 | ; read file |
||
1533 | ; first block is already read to 0x90000 |
||
1534 | mov eax, [edx] |
||
1535 | and eax, not 0xFFF |
||
1536 | call MEM_Get_Linear_Address |
||
1537 | mov esi, 0x90000 |
||
1538 | mov edi, eax |
||
1539 | mov ecx, 512/4 |
||
1540 | rep movsd |
||
1541 | sub edi, eax |
||
1542 | .loop1: |
||
1543 | ; [esp] = pointer to current page directory entry |
||
1544 | ; edx = pointer to current page table |
||
1545 | ; edi = offset in page |
||
1546 | mov eax, [edx] |
||
1547 | and eax, not 0xFFF |
||
1548 | call MEM_Get_Linear_Address |
||
1549 | push edi |
||
1550 | add edi, eax |
||
1551 | lea eax, [esp+8+36+8] |
||
1552 | call dword [eax-4] |
||
1553 | pop edi |
||
1554 | test eax, eax |
||
1555 | jnz .endloop1 |
||
1556 | add edi, 512 ; new offset |
||
1557 | cmp edi, 4096 |
||
1558 | jb .loop1 |
||
1559 | xor edi, edi |
||
1560 | add edx, 4 ; go to next page |
||
1561 | test edx, 4096-1 |
||
1562 | jnz .loop1 |
||
1563 | pop eax |
||
1564 | add eax, 4 ; go to next directory entry |
||
1565 | push eax |
||
1566 | mov eax, [eax] |
||
1567 | and eax, not 0xFFF |
||
1568 | call MEM_Get_Linear_Address |
||
1569 | mov edx, eax |
||
1570 | jmp .loop1 |
||
1571 | .endloop1: |
||
1572 | pop edx |
||
1573 | cmp eax, 6 |
||
1574 | jnz .cleanfailed_mem2 |
||
1575 | call new_start_application_fl.add_app_parameters |
||
1576 | mov [esp+28], eax |
||
1577 | popad |
||
1578 | ret |
||
1579 | |||
1580 | .cleanfailed_mem2: |
||
1581 | ; file read error; free all allocated mem |
||
1582 | mov ecx, eax |
||
1583 | neg ecx |
||
1584 | mov eax, [new_process_place] |
||
1585 | call dispose_app_cr3_table |
||
1586 | jmp .cleanfailed |
||
1587 | .cleanfailed_mem1: |
||
1588 | ; there is mem for directory entry, but there is no mem for pages |
||
1589 | ; so free directory entry |
||
1590 | mov eax, [new_process_place] |
||
1591 | shl eax, 8 |
||
1592 | mov eax, [0x80000+eax+0xB8] |
||
1593 | call MEM_Free_Page |
||
1594 | .cleanfailed_mem: |
||
1595 | ; there is no mem for directory entry, display message |
||
1596 | mov esi, start_not_enough_memory |
||
1597 | call sys_msg_board_str |
||
1598 | .cleanfailed: |
||
1599 | push ecx |
||
1600 | ; clean process name, this avoid problems with @panel |
||
1601 | mov edi, [new_process_place] |
||
1602 | shl edi, 8 |
||
1603 | add edi, 0x80000 |
||
1604 | mov ecx, 11 |
||
1605 | mov al, ' ' |
||
1606 | rep stosb |
||
1607 | pop eax |
||
1608 | .failed: |
||
1609 | pop ebx |
||
1610 | mov [esp+28], eax |
||
1611 | popad |
||
1612 | mov [application_table_status], 0 |
||
1613 | call safe_sti |
||
1614 | ret |
||
1615 | ; \end{diamond}0>>-->-->-->-->256 |