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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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115 | poddubny | 36 | cmp word [eax+TASKDATA.state],9 ;check process state, 9 means that process slot is empty |
1 | ha | 37 | jnz .newprocessplace |
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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115 | poddubny | 44 | mov word [ebx+TASKDATA.state],9 ;set process state to 9 (for slot after hight boundary) |
1 | ha | 45 | mov [new_process_place],eax ;save process slot |
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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1 | ha | 58 | |
59 | ;----------------------------------------------------------------------------- |
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60 | new_sys_threads: |
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61 | ;eax=1 - create thread |
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62 | ; ebx=thread start |
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63 | ; ecx=thread stack value |
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64 | ;result: |
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65 | ; eax=pid |
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40 | halyavin | 66 | xor edx,edx ; flags=0 |
1 | ha | 67 | pushad |
68 | |||
69 | cmp eax,1 |
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70 | jnz .ret ;other subfunctions |
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71 | mov esi,new_process_loading |
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72 | call sys_msg_board_str |
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73 | ;lock application_table_status mutex |
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74 | .table_status: |
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75 | cli |
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76 | cmp [application_table_status],0 |
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77 | je .stf |
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78 | sti |
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79 | call change_task |
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80 | jmp .table_status |
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81 | .stf: |
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82 | call set_application_table_status |
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83 | ;find free process slot |
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84 | |||
85 | call find_new_process_place |
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86 | test eax,eax |
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87 | jz .failed |
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88 | |||
89 | ;set parameters for thread |
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90 | xor eax,eax |
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91 | mov [app_i_param],eax |
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92 | mov [app_i_icon],eax |
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93 | mov [app_start],ebx |
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94 | mov [app_esp],ecx |
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95 | |||
96 | mov esi,[0x3000] |
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97 | shl esi,8 |
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115 | poddubny | 98 | add esi,0x80000+APPDATA.app_name |
1 | ha | 99 | mov ebx,esi ;ebx=esi - pointer to extended information about current thread |
100 | |||
101 | mov edi,[new_process_place] |
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102 | shl edi,8 |
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103 | add edi,0x80000 |
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115 | poddubny | 104 | lea edx, [edi+APPDATA.app_name] ;edx=edi - pointer to extended infomation about new thread |
1 | ha | 105 | mov ecx,256/4 |
106 | rep stosd ;clean extended information about new thread |
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107 | mov edi,edx |
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108 | mov ecx,11 |
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109 | rep movsb ;copy process name |
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115 | poddubny | 110 | mov eax,[ebx+APPDATA.mem_size] |
1 | ha | 111 | mov [app_mem],eax ;set memory size |
115 | poddubny | 112 | mov eax,[ebx+APPDATA.dir_table] |
113 | mov dword [edx-APPDATA.app_name+APPDATA.dir_table],eax ;copy page directory |
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1 | ha | 114 | ; mov eax,[new_process_place] |
115 | ; mov ebx,[0x3000] |
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116 | ; call addreference_app_cr3_table |
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117 | |||
118 | push 0 ;no parameters |
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147 | diamond | 119 | call fs_execute.add_app_parameters ;start thread |
1 | ha | 120 | mov [esp+28],eax |
121 | popad |
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122 | ret |
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123 | |||
124 | .failed: |
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125 | sti |
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126 | popad |
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127 | mov eax,-1 |
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128 | ret |
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129 | .ret: |
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130 | popad |
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131 | ret |
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132 | ;----------------------------------------------------------------------------- |
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133 | new_mem_resize: |
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134 | ;input: |
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135 | ; ebx - new size |
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136 | ;result: |
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137 | ; [esp+36]:=0 - normal |
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138 | ; [esp+36]:=1 - error |
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139 | ;This function set new application memory size. |
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140 | mov esi,ebx ;save new size |
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141 | add ebx,4095 |
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142 | and ebx,not (4096-1) ;round up size |
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143 | mov ecx,[0x3000] |
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144 | shl ecx,8 |
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115 | poddubny | 145 | mov edx,[0x80000 + APPDATA.mem_size +ecx] |
1 | ha | 146 | add edx,4095 |
147 | and edx,not (4096-1) ;old size |
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115 | poddubny | 148 | mov eax,[0x80000 + APPDATA.dir_table+ecx] |
1 | ha | 149 | call MEM_Get_Linear_Address |
150 | ;eax - linear address of page directory |
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151 | call MEM_Heap_Lock ;guarantee that two threads willn't |
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152 | ;change memory size simultaneously |
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153 | cmp ebx,edx |
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154 | ; mov esi,ebx ;save new size |
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155 | jg .expand |
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156 | |||
157 | .free: |
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158 | sub edx,ebx |
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159 | jz .unlock ;do nothing |
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160 | mov ecx,edx |
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161 | shr ecx,12 |
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162 | add ebx,std_application_base_address |
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163 | call mem_free_specified_region ;free unnecessary pages |
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164 | jmp .unlock |
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165 | |||
166 | .expand: |
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167 | sub ebx,edx |
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168 | mov ecx,ebx |
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169 | shr ecx,12 |
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170 | mov ebx,edx |
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171 | add ebx,std_application_base_address |
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172 | call mem_alloc_specified_region ;alloc necessary pages |
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173 | test eax,eax |
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174 | jz .failed ;not enough memory |
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175 | |||
176 | .unlock: |
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177 | mov ebx,esi |
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178 | mov eax,[0x3000] |
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179 | shl eax,8 |
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115 | poddubny | 180 | mov [eax+0x80000 + APPDATA.mem_size],ebx ;write new memory size |
1 | ha | 181 | ;search threads and update |
182 | ;application memory size infomation |
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115 | poddubny | 183 | mov ecx,[eax+0x80000 + APPDATA.dir_table] |
1 | ha | 184 | mov eax,2 |
185 | |||
186 | .search_threads: |
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187 | ;eax = current slot |
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188 | ;ebx = new memory size |
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189 | ;ecx = page directory |
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190 | cmp eax,[0x3004] |
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191 | jg .search_threads_end |
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192 | mov edx,eax |
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193 | shl edx,5 |
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115 | poddubny | 194 | cmp word [0x3000+edx+TASKDATA.state],9 ;if slot empty? |
1 | ha | 195 | jz .search_threads_next |
196 | shl edx,3 |
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115 | poddubny | 197 | cmp [edx+0x80000+APPDATA.dir_table],ecx ;if it is our thread? |
1 | ha | 198 | jnz .search_threads_next |
115 | poddubny | 199 | mov [edx+0x80000+APPDATA.mem_size],ebx ;update memory size |
1 | ha | 200 | .search_threads_next: |
201 | inc eax |
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202 | jmp .search_threads |
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203 | .search_threads_end: |
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204 | |||
205 | call MEM_Heap_UnLock |
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206 | mov dword [esp+36],0 |
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207 | ret |
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208 | |||
209 | .failed: |
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210 | call MEM_Heap_UnLock |
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211 | mov dword [esp+36],1 |
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212 | ret |
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213 | ;----------------------------------------------------------------------------- |
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214 | pid_to_slot: |
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215 | ;Input: |
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216 | ; eax - pid of process |
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217 | ;Output: |
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218 | ; eax - slot of process or 0 if process don't exists |
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219 | ;Search process by PID. |
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220 | push ebx |
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221 | push ecx |
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222 | mov ebx,[0x3004] |
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223 | shl ebx,5 |
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224 | mov ecx,2*32 |
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225 | |||
226 | .loop: |
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227 | ;ecx=offset of current process info entry |
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228 | ;ebx=maximum permitted offset |
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115 | poddubny | 229 | cmp byte [second_base_address+0x3000+ecx+TASKDATA.state],9 |
1 | ha | 230 | jz .endloop ;skip empty slots |
115 | poddubny | 231 | cmp [second_base_address+0x3000+ecx+TASKDATA.pid],eax ;check PID |
1 | ha | 232 | jz .pid_found |
233 | .endloop: |
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234 | add ecx,32 |
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235 | cmp ecx,ebx |
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236 | jle .loop |
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237 | |||
238 | pop ecx |
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239 | pop ebx |
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240 | xor eax,eax |
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241 | ret |
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242 | |||
243 | .pid_found: |
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244 | shr ecx,5 |
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245 | mov eax,ecx ;convert offset to index of slot |
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246 | pop ecx |
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247 | pop ebx |
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248 | ret |
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249 | ;----------------------------------------------------------------------------- |
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250 | is_new_process: |
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251 | ;Input: |
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252 | ; eax - process slot |
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253 | ;Output: |
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254 | ; eax=1 - it is new process |
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255 | ; eax=0 - it is old process |
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256 | ; shl eax,5 |
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257 | ; mov eax,[second_base_address+0x3000+eax+0x10] |
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258 | ; cmp eax,std_application_base_address ;check base address of application |
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259 | ; jz .new_process |
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260 | ; xor eax,eax |
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261 | ; ret |
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262 | |||
263 | ;.new_process: |
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264 | mov eax,1 |
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265 | ret |
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266 | ;----------------------------------------------------------------------------- |
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267 | write_process_memory: |
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268 | ;Input: |
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269 | ; eax - process slot |
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270 | ; ebx - buffer address |
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271 | ; ecx - buffer size |
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272 | ; edx - start address in other process |
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273 | ;Output: |
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274 | ; eax - number of bytes written |
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275 | pushad |
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276 | shl eax,8 |
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115 | poddubny | 277 | mov eax,[0x80000+eax+APPDATA.dir_table] |
1 | ha | 278 | call MEM_Get_Linear_Address |
279 | mov ebp,eax |
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280 | ;ebp=linear address of page directory of other process. |
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281 | add edx,std_application_base_address ;convert to linear address |
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282 | test ecx,ecx |
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283 | jle .ret |
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284 | |||
285 | .write_loop: |
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286 | ;ebx = current buffer address |
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287 | ;ecx>0 = current size |
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288 | ;edx = current address in other process |
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289 | ;ebp = linear address of page directory |
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290 | |||
291 | call MEM_Heap_Lock ;cli |
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292 | mov esi,edx |
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293 | shr esi,22 |
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294 | mov eax,[ebp+4*esi] ;find page directory entry |
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295 | and eax,not (4096-1) ;clear flags |
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296 | test eax,eax |
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297 | jz .page_not_found |
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298 | call MEM_Get_Linear_Address ;calculate linear address of page table |
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299 | test eax,eax |
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300 | jz .page_not_found |
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301 | mov esi,edx |
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302 | shr esi,12 |
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303 | and esi,1023 |
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304 | mov eax,[eax+4*esi] ;find page table entry |
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305 | and eax,not (4096-1) |
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306 | test eax,eax |
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307 | jz .page_not_found |
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308 | call MEM_Get_Linear_Address ;calculate linear address of page |
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309 | test eax,eax |
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310 | jz .page_not_found |
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311 | mov edi,eax |
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312 | call MEM_Add_Reference_Linear;guarantee that page willn't disappear |
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313 | call MEM_Heap_UnLock ;sti |
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314 | |||
315 | mov esi,edx |
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316 | and esi,4095 |
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317 | add edi,esi ;add offset in page |
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318 | ;edi = linear address corresponding edx in other process |
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319 | sub esi,4096 |
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320 | neg esi ;esi - number of remaining bytes in page |
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321 | cmp esi,ecx |
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322 | jl .min_ecx |
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323 | mov esi,ecx |
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324 | .min_ecx: ;esi=min(ecx,esi) - number of bytes to write |
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325 | sub ecx,esi |
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326 | push ecx |
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327 | mov ecx,esi ;ecx - number of bytes to write |
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328 | mov esi,ebx ;esi - source, edi - destination |
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329 | add edx,ecx ;move pointer in address space of other process |
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330 | push edi |
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331 | |||
332 | ;move ecx bytes |
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333 | test ecx,3 |
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334 | jnz .not_aligned |
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335 | shr ecx,2 |
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336 | rep movsd |
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337 | jmp .next_iter |
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338 | .not_aligned: |
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339 | rep movsb |
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340 | .next_iter: |
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341 | |||
342 | pop eax |
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343 | and eax,not (4096-1) ;eax - linear address of current page |
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344 | call MEM_Free_Page_Linear ;free reference |
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345 | mov ebx,esi ;new pointer to buffer - movsb automaticaly advance it. |
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346 | pop ecx ;restore number of remaining bytes |
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347 | test ecx,ecx |
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348 | jnz .write_loop |
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349 | .ret: |
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350 | popad |
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351 | mov eax,ecx |
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352 | ret |
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353 | |||
354 | .page_not_found: |
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355 | call MEM_Heap_UnLock ;error has appeared in critical region |
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356 | sub ecx,[esp+24] ;[esp+24]<-->ecx |
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357 | neg ecx ;ecx=number_of_written_bytes |
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358 | mov [esp+28],ecx ;[esp+28]<-->eax |
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359 | popad |
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360 | ret |
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361 | ;----------------------------------------------------------------------------- |
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362 | syscall_test: |
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363 | ;for testing memory manager from applications. |
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364 | mov edx,ecx |
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365 | mov ecx,ebx |
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366 | call trans_address |
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367 | mov ebx,eax |
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368 | mov eax,[0x3000] |
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369 | call read_process_memory |
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370 | ret |
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371 | ;----------------------------------------------------------------------------- |
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372 | read_process_memory: |
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373 | ;Input: |
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374 | ; eax - process slot |
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375 | ; ebx - buffer address |
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376 | ; ecx - buffer size |
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377 | ; edx - start address in other process |
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378 | ;Output: |
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379 | ; eax - number of bytes read. |
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380 | pushad |
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381 | shl eax,8 |
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115 | poddubny | 382 | mov eax,[0x80000+eax+APPDATA.dir_table] |
1 | ha | 383 | call MEM_Get_Linear_Address |
384 | mov ebp,eax |
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385 | add edx,std_application_base_address |
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386 | .read_loop: |
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387 | ;ebx = current buffer address |
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388 | ;ecx>0 = current size |
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389 | ;edx = current address in other process |
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390 | ;ebp = linear address of page directory |
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391 | |||
392 | call MEM_Heap_Lock ;cli |
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393 | mov esi,edx |
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394 | shr esi,22 |
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395 | mov eax,[ebp+4*esi] ;find page directory entry |
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396 | and eax,not (4096-1) |
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397 | test eax,eax |
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398 | jz .page_not_found |
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399 | call MEM_Get_Linear_Address |
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400 | test eax,eax |
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401 | jz .page_not_found |
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402 | mov esi,edx |
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403 | shr esi,12 |
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404 | and esi,1023 |
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405 | mov eax,[eax+4*esi] ;find page table entry |
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406 | and eax,not (4096-1) |
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407 | test eax,eax |
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408 | jz .page_not_found |
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409 | call MEM_Get_Linear_Address ;calculate linear address of page |
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410 | test eax,eax |
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411 | jz .page_not_found |
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412 | mov esi,eax |
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413 | call MEM_Add_Reference_Linear;guarantee that page willn't disappear |
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414 | call MEM_Heap_UnLock ;sti |
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415 | |||
416 | mov edi,edx |
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417 | and edi,4095 |
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418 | add esi,edi ;add offset in page |
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419 | ;esi = linear address corresponding edx in other process |
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420 | sub edi,4096 |
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421 | neg edi |
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422 | |||
423 | ;edi=min(edi,ecx) - number of bytes to copy |
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424 | cmp edi,ecx |
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425 | jl .min_ecx |
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426 | mov edi,ecx |
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427 | .min_ecx: |
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428 | |||
429 | sub ecx,edi ;update size of remaining bytes |
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430 | add edx,edi ;update current pointer in other address space. |
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431 | push ecx |
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432 | mov ecx,edi ;ecx - number of bytes to read |
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433 | mov edi,ebx ;esi - source, edi - destination |
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434 | push esi |
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435 | ;move ecx bytes |
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436 | test ecx,3 |
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437 | jnz .not_aligned |
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438 | shr ecx,2 |
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439 | rep movsd |
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440 | jmp .next_iter |
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441 | .not_aligned: |
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442 | rep movsb |
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443 | .next_iter: |
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444 | pop eax |
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445 | and eax,not (4096-1) ;eax - linear address of current page |
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446 | call MEM_Free_Page_Linear ;free reference |
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447 | mov ebx,edi ;new pointer to buffer - movsb automaticaly advance it. |
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448 | pop ecx ;restore number of remaining bytes |
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449 | test ecx,ecx |
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450 | jnz .read_loop |
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451 | |||
452 | popad |
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453 | mov eax,ecx |
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454 | ret |
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455 | |||
456 | .page_not_found: |
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457 | call MEM_Heap_UnLock ;error has appeared in critical region |
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458 | sub ecx,[esp+24] ;[esp+24]<-->ecx |
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459 | neg ecx ;ecx=number_of_read_bytes |
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460 | mov [esp+28],ecx ;[esp+28]<-->eax |
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461 | popad |
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462 | ret |
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463 | ;----------------------------------------------------------------------------- |
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464 | check_region: |
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465 | ;input: |
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466 | ; ebx - start of buffer |
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467 | ; ecx - size of buffer |
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468 | ;result: |
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469 | ; eax = 1 region lays in app memory |
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470 | ; eax = 0 region don't lays in app memory |
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471 | mov eax,[0x3000] |
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472 | jmp check_process_region |
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473 | ;----------------------------------------------------------------------------- |
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474 | check_process_region: |
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475 | ;input: |
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476 | ; eax - slot |
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477 | ; ebx - start of buffer |
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478 | ; ecx - size of buffer |
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479 | ;result: |
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480 | ; eax = 1 region lays in app memory |
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481 | ; eax = 0 region don't lays in app memory |
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482 | test ecx,ecx |
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483 | jle .ok |
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484 | shl eax,5 |
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115 | poddubny | 485 | cmp word [0x3000+eax+TASKDATA.state],0 |
1 | ha | 486 | jnz .failed |
487 | shl eax,3 |
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115 | poddubny | 488 | mov eax,[0x80000+eax+APPDATA.dir_table] |
1 | ha | 489 | test eax,eax |
490 | jz .failed |
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491 | call MEM_Get_Linear_Address |
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492 | push ebx |
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493 | push ecx |
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494 | push edx |
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495 | mov edx,ebx |
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496 | and edx,not (4096-1) |
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497 | sub ebx,edx |
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498 | add ecx,ebx |
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499 | mov ebx,edx |
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500 | add ecx,(4096-1) |
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501 | and ecx,not (4096-1) |
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502 | .loop: |
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503 | ;eax - linear address of page directory |
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504 | ;ebx - current page |
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505 | ;ecx - current size |
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506 | mov edx,ebx |
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507 | shr edx,22 |
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508 | mov edx,[eax+4*edx] |
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509 | and edx,not (4096-1) |
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510 | test edx,edx |
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511 | jz .failed1 |
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512 | push eax |
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513 | mov eax,edx |
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514 | call MEM_Get_Linear_Address |
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515 | mov edx,ebx |
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516 | shr edx,12 |
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517 | and edx,(1024-1) |
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518 | mov eax,[eax+4*edx] |
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519 | and eax,not (4096-1) |
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520 | test eax,eax |
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521 | pop eax |
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522 | jz .failed1 |
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523 | add ebx,4096 |
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524 | sub ecx,4096 |
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525 | jg .loop |
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526 | pop edx |
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527 | pop ecx |
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528 | pop ebx |
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529 | .ok: |
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530 | mov eax,1 |
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531 | ret |
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532 | |||
533 | .failed1: |
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534 | pop edx |
||
535 | pop ecx |
||
536 | pop ebx |
||
537 | .failed: |
||
538 | xor eax,eax |
||
539 | ret |
||
540 | ;----------------------------------------------------------------------------- |
||
541 | new_sys_ipc: |
||
542 | ;input: |
||
543 | ; eax=1 - set ipc buffer area |
||
544 | ; ebx=address of buffer |
||
545 | ; ecx=size of buffer |
||
546 | ; eax=2 - send message |
||
547 | ; ebx=PID |
||
548 | ; ecx=address of message |
||
549 | ; edx=size of message |
||
550 | cmp eax,1 |
||
551 | jnz .no_ipc_def |
||
552 | ;set ipc buffer area |
||
553 | mov edi,[0x3000] |
||
554 | shl edi,8 |
||
555 | add edi,0x80000 |
||
556 | cli |
||
115 | poddubny | 557 | mov [edi+APPDATA.ipc_start],ebx ;set fields in extended information area |
558 | mov [edi+APPDATA.ipc_size],ecx |
||
1 | ha | 559 | sti |
560 | mov [esp+36],dword 0 ;success |
||
561 | ret |
||
562 | |||
563 | .no_ipc_def: |
||
564 | cmp eax,2 |
||
565 | jnz .no_ipc_send |
||
566 | ;send message |
||
567 | cli |
||
568 | ;obtain slot from PID |
||
569 | mov eax,ebx |
||
570 | call pid_to_slot |
||
571 | test eax,eax |
||
572 | jz .no_pid |
||
573 | mov ebp,eax |
||
574 | ;ebp = slot of other process |
||
575 | shl eax,8 |
||
115 | poddubny | 576 | mov edi,[eax+0x80000+APPDATA.ipc_start] ;is ipc area defined? |
1 | ha | 577 | test edi,edi |
578 | jz .no_ipc_area |
||
115 | poddubny | 579 | mov esi,[eax+0x80000+APPDATA.ipc_size] ;esi - size of buffer |
1 | ha | 580 | push dword -1 ;temp variable for read_process_memory |
581 | mov ebx,esp |
||
582 | push ecx |
||
583 | push edx |
||
584 | mov ecx,4 ;read 4 bytes |
||
585 | mov eax,ebp |
||
586 | mov edx,edi ;from beginning of buffer. |
||
587 | call read_process_memory |
||
588 | mov eax,[esp+8] |
||
589 | test eax,eax |
||
590 | jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now |
||
591 | add edx,4 ;move to next 4 bytes |
||
592 | mov eax,ebp |
||
593 | call read_process_memory ;read size of occupied space in buffer |
||
594 | sub esi,8 |
||
595 | sub esi,[esp] |
||
596 | sub esi,[esp+8] ;esi=(buffer size)-(occupied size)-(message size)-(header of message size) |
||
597 | js .buffer_overflow ;esi<0 - not enough memory in buffer |
||
598 | mov esi,[esp+8] ;previous offset |
||
599 | add dword [esp+8],8 |
||
600 | mov edi,[esp] |
||
601 | add [esp+8],edi ;add (size of message)+(size of header of message) to [buffer+4] |
||
602 | mov eax,ebp |
||
603 | call write_process_memory |
||
604 | add edx,esi |
||
605 | sub edx,4 ;move to beginning of place for our message |
||
606 | mov eax,[second_base_address+0x3010] |
||
115 | poddubny | 607 | mov eax,[eax+TASKDATA.pid] ;eax - our PID |
1 | ha | 608 | mov [esp+8],eax |
609 | mov eax,ebp |
||
610 | call write_process_memory ;write PID |
||
611 | mov ebx,esp ;address of size of message |
||
612 | mov eax,ebp |
||
613 | add edx,4 |
||
614 | call write_process_memory ;write size of message |
||
615 | add edx,4 |
||
616 | pop ecx ;ecx - size of message |
||
617 | pop eax |
||
618 | call trans_address |
||
619 | mov ebx,eax ;ebx - linear address of message |
||
620 | add esp,4 ;pop temporary variable |
||
621 | mov eax,ebp |
||
622 | call write_process_memory ;write message |
||
623 | sti |
||
624 | ;awake other process |
||
625 | shl ebp,8 |
||
626 | mov eax,ebp |
||
115 | poddubny | 627 | or [eax+0x80000+APPDATA.event_mask],dword 0x40 |
1 | ha | 628 | |
629 | cmp dword [check_idle_semaphore],20 |
||
630 | jge .ipc_no_cis |
||
631 | mov dword [check_idle_semaphore],5 |
||
632 | .ipc_no_cis: |
||
633 | mov dword [esp+36],0 |
||
634 | ret |
||
635 | .no_ipc_send: |
||
636 | mov dword [esp+36],-1 |
||
637 | ret |
||
638 | .no_pid: |
||
639 | sti |
||
640 | mov dword [esp+36],4 |
||
641 | ret |
||
642 | .no_ipc_area: |
||
643 | sti |
||
644 | mov dword [esp+36],1 |
||
645 | ret |
||
646 | .ipc_blocked: |
||
647 | sti |
||
648 | add esp,12 |
||
649 | mov dword [esp+36],2 |
||
650 | ret |
||
651 | .buffer_overflow: |
||
652 | sti |
||
653 | add esp,12 |
||
654 | mov dword [esp+36],3 |
||
655 | ret |
||
656 | ;----------------------------------------------------------------------------- |
||
657 | trans_address: |
||
658 | ;Input |
||
659 | ; eax - application address |
||
660 | ;Output |
||
661 | ; eax - linear address for kernel |
||
662 | add eax,std_application_base_address |
||
663 | ret |
||
664 | ;----------------------------------------------------------------------------- |
||
665 | |||
91 | diamond | 666 | ; \begin{diamond} |
667 | include 'debug.inc' |
||
668 | |||
669 | fs_execute: |
||
670 | ; ebx - cmdline |
||
671 | ; edx - flags |
||
672 | ; ebp - full filename |
||
673 | ; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it |
||
674 | pushad |
||
675 | ; check filename length - with terminating NULL must be no more than 1024 symbols |
||
676 | mov edi, ebp |
||
677 | mov ecx, 1024 |
||
678 | xor eax, eax |
||
679 | repnz scasb |
||
680 | jz @f |
||
681 | popad |
||
682 | mov eax, -ERROR_FILE_NOT_FOUND |
||
683 | ret |
||
684 | @@: |
||
685 | |||
686 | mov esi, new_process_loading |
||
687 | call sys_msg_board_str ; write message to message board |
||
688 | |||
689 | ; lock application_table_status mutex |
||
690 | .table_status: |
||
691 | cli |
||
692 | cmp [application_table_status], 0 |
||
693 | jz .stf |
||
694 | sti |
||
695 | call change_task |
||
696 | jmp .table_status |
||
697 | .stf: |
||
698 | call set_application_table_status |
||
699 | push ebx ; save command line pointer for add_app_parameters |
||
700 | |||
701 | call find_new_process_place ; find new process slot |
||
702 | call safe_sti |
||
703 | test eax, eax |
||
704 | mov ecx, -0x20 ; too many processes |
||
705 | jz .failed |
||
706 | |||
707 | ; write application name |
||
708 | push edi |
||
709 | mov ecx, edi |
||
710 | sub ecx, ebp |
||
711 | mov [appl_path], ebp |
||
712 | mov [appl_path_size], ecx |
||
713 | dec edi |
||
714 | std |
||
715 | mov al, '/' |
||
716 | repnz scasb |
||
717 | cld |
||
718 | jnz @f |
||
719 | inc edi |
||
720 | @@: |
||
721 | inc edi |
||
722 | ; now edi points to name without path |
||
723 | mov esi, edi |
||
724 | mov ecx, 8 ; 8 chars for name |
||
725 | mov edi, [new_process_place] |
||
726 | shl edi, cl |
||
115 | poddubny | 727 | add edi, 0x80000+APPDATA.app_name |
91 | diamond | 728 | .copy_process_name_loop: |
729 | lodsb |
||
730 | cmp al, '.' |
||
731 | jz .copy_process_name_done |
||
732 | test al, al |
||
733 | jz .copy_process_name_done |
||
734 | stosb |
||
735 | loop .copy_process_name_loop |
||
736 | .copy_process_name_done: |
||
737 | mov al, ' ' |
||
738 | rep stosb |
||
739 | pop eax |
||
740 | mov cl, 3 ; 3 chars for extension |
||
741 | dec esi |
||
742 | @@: |
||
743 | dec eax |
||
744 | cmp eax, esi |
||
745 | jbe .copy_process_ext_done |
||
746 | cmp byte [eax], '.' |
||
747 | jnz @b |
||
748 | lea esi, [eax+1] |
||
749 | .copy_process_ext_loop: |
||
750 | lodsb |
||
751 | test al, al |
||
752 | jz .copy_process_ext_done |
||
753 | stosb |
||
754 | loop .copy_process_ext_loop |
||
755 | .copy_process_ext_done: |
||
756 | mov al, ' ' |
||
757 | rep stosb |
||
758 | |||
759 | ; read header |
||
760 | lea eax, [esp+8+36] |
||
761 | mov edi, 0x90000 |
||
762 | call dword [eax-4] |
||
763 | mov ecx, eax |
||
764 | neg ecx |
||
765 | jnz .cleanfailed |
||
766 | ; check menuet signature |
||
767 | mov ecx, -0x1F |
||
768 | cmp dword [0x90000], 'MENU' |
||
769 | jnz .cleanfailed |
||
770 | cmp word [0x90004], 'ET' |
||
771 | jnz .cleanfailed |
||
772 | call get_app_params |
||
773 | mov ecx, -0x1F |
||
133 | diamond | 774 | jc .cleanfailed |
775 | ; sanity check - because we will load all file, |
||
776 | ; file size must be not greater than memory size |
||
777 | mov eax, [esp+8+36] |
||
778 | cmp [app_mem], eax |
||
779 | jb .cleanfailed |
||
91 | diamond | 780 | |
781 | mov eax, [new_process_place] |
||
782 | inc ecx ; -0x1E = no memory |
||
783 | call create_app_cr3_table |
||
784 | test eax, eax |
||
785 | jz .cleanfailed_mem |
||
786 | |||
787 | call MEM_Get_Linear_Address |
||
788 | |||
789 | mov ebx, std_application_base_address |
||
790 | mov ecx, [app_mem] |
||
791 | add ecx, 4095 |
||
792 | shr ecx, 12 |
||
793 | mov edx, eax ; edx - linear address of page directory |
||
794 | call mem_alloc_specified_region |
||
795 | mov ecx, -0x1E ; no memory |
||
796 | test eax, eax |
||
797 | jz .cleanfailed_mem1 |
||
798 | |||
799 | add edx, std_application_base_address shr 20 |
||
800 | mov eax, [edx] |
||
801 | and eax, not 4095 |
||
802 | call MEM_Get_Linear_Address |
||
803 | push edx ; save pointer to first page table |
||
804 | mov edx, eax |
||
805 | ; read file |
||
806 | ; first block is already read to 0x90000 |
||
807 | mov eax, [edx] |
||
808 | and eax, not 0xFFF |
||
809 | call MEM_Get_Linear_Address |
||
810 | mov esi, 0x90000 |
||
811 | mov edi, eax |
||
812 | mov ecx, 512/4 |
||
813 | rep movsd |
||
814 | sub edi, eax |
||
815 | .loop1: |
||
816 | ; [esp] = pointer to current page directory entry |
||
817 | ; edx = pointer to current page table |
||
818 | ; edi = offset in page |
||
819 | mov eax, [edx] |
||
820 | and eax, not 0xFFF |
||
821 | call MEM_Get_Linear_Address |
||
822 | push edi |
||
823 | add edi, eax |
||
824 | lea eax, [esp+8+36+8] |
||
825 | call dword [eax-4] |
||
826 | pop edi |
||
827 | test eax, eax |
||
828 | jnz .endloop1 |
||
829 | add edi, 512 ; new offset |
||
830 | cmp edi, 4096 |
||
831 | jb .loop1 |
||
832 | xor edi, edi |
||
833 | add edx, 4 ; go to next page |
||
834 | test edx, 4096-1 |
||
835 | jnz .loop1 |
||
836 | pop eax |
||
837 | add eax, 4 ; go to next directory entry |
||
838 | push eax |
||
839 | mov eax, [eax] |
||
840 | and eax, not 0xFFF |
||
841 | call MEM_Get_Linear_Address |
||
842 | mov edx, eax |
||
843 | jmp .loop1 |
||
844 | .endloop1: |
||
845 | pop edx |
||
846 | cmp eax, 6 |
||
847 | jnz .cleanfailed_mem2 |
||
147 | diamond | 848 | call .add_app_parameters |
91 | diamond | 849 | mov [esp+28], eax |
850 | popad |
||
851 | ret |
||
852 | |||
853 | .cleanfailed_mem2: |
||
854 | ; file read error; free all allocated mem |
||
855 | mov ecx, eax |
||
856 | neg ecx |
||
857 | mov eax, [new_process_place] |
||
858 | call dispose_app_cr3_table |
||
859 | jmp .cleanfailed |
||
860 | .cleanfailed_mem1: |
||
861 | ; there is mem for directory entry, but there is no mem for pages |
||
862 | ; so free directory entry |
||
863 | mov eax, [new_process_place] |
||
864 | shl eax, 8 |
||
865 | mov eax, [0x80000+eax+0xB8] |
||
866 | call MEM_Free_Page |
||
867 | .cleanfailed_mem: |
||
868 | ; there is no mem for directory entry, display message |
||
869 | mov esi, start_not_enough_memory |
||
870 | call sys_msg_board_str |
||
871 | .cleanfailed: |
||
872 | push ecx |
||
873 | ; clean process name, this avoid problems with @panel |
||
874 | mov edi, [new_process_place] |
||
875 | shl edi, 8 |
||
115 | poddubny | 876 | add edi, 0x80000+APPDATA.app_name |
91 | diamond | 877 | mov ecx, 11 |
878 | mov al, ' ' |
||
879 | rep stosb |
||
880 | pop eax |
||
881 | .failed: |
||
882 | pop ebx |
||
883 | mov [esp+28], eax |
||
884 | popad |
||
885 | mov [application_table_status], 0 |
||
886 | call safe_sti |
||
887 | ret |
||
888 | ; \end{diamond} |
||
147 | diamond | 889 | .add_app_parameters: |
890 | ;input: |
||
891 | ; [esp] - pointer to parameters |
||
892 | ; [esp+4]-[esp+36] pushad registers. |
||
893 | ;result |
||
894 | ; eax - pid of new process |
||
895 | ; or zero if failed |
||
896 | cli |
||
897 | mov ebx,[new_process_place] |
||
898 | cmp ebx,[0x3004] |
||
899 | jle .noinc |
||
900 | inc dword [0x3004] ;update number of processes |
||
901 | .noinc: |
||
902 | |||
903 | ; mov ebx,[new_process_place] |
||
904 | ;set 0x8c field of extended information about process |
||
905 | ;(size of application memory) |
||
906 | shl ebx,8 |
||
907 | mov eax,[app_mem] |
||
908 | mov [second_base_address+0x80000+APPDATA.mem_size+ebx],eax |
||
909 | ;set 0x10 field of information about process |
||
910 | ;(application base address) |
||
911 | ; mov ebx,[new_process_place] |
||
912 | ; shl ebx,5 |
||
913 | shr ebx,3 |
||
914 | mov dword [second_base_address+0x3000+ebx+TASKDATA.mem_start],std_application_base_address |
||
915 | |||
916 | ;add command line parameters |
||
917 | .add_command_line: |
||
918 | mov edx,[app_i_param] |
||
919 | test edx,edx |
||
920 | jz .no_command_line ;application don't need parameters |
||
921 | mov eax,[esp+4] |
||
922 | test eax,eax |
||
923 | jz .no_command_line ;no parameters specified |
||
924 | ;calculate parameter length |
||
925 | mov esi,eax |
||
926 | xor ecx,ecx |
||
927 | inc ecx ; include terminating null |
||
928 | .command_line_len: |
||
929 | cmp byte [esi],0 |
||
930 | jz .command_line_len_end |
||
931 | inc esi |
||
932 | inc ecx |
||
933 | cmp ecx,256 |
||
934 | jl .command_line_len |
||
935 | |||
936 | .command_line_len_end: |
||
937 | ;ecx - parameter length |
||
938 | ;edx - address of parameters in new process address space |
||
939 | mov ebx,eax ;ebx - address of parameters in our address space |
||
940 | mov eax,[new_process_place] |
||
941 | call write_process_memory ;copy parameters to new process address space |
||
942 | |||
943 | .no_command_line: |
||
944 | ;****************************************************************** |
||
945 | mov edx,[app_i_icon] |
||
946 | test edx,edx |
||
947 | jz .no_command_line_1 ;application don't need path of file |
||
948 | mov ebx,[appl_path] |
||
949 | mov ecx,[appl_path_size] |
||
950 | mov eax,[new_process_place] |
||
951 | call write_process_memory ;copy path of file to new process address space |
||
952 | .no_command_line_1: |
||
953 | ;****************************************************************** |
||
954 | mov ebx,[new_process_place] |
||
955 | mov eax,ebx |
||
956 | shl ebx,5 |
||
957 | mov [ebx+window_data+WDATA.fl_wstate],WSTATE_NORMAL |
||
958 | mov [ebx+window_data+WDATA.fl_redraw],1 |
||
959 | add ebx,0x3000 ;ebx - pointer to information about process |
||
960 | mov [ebx+TASKDATA.wnd_number],al ;set window number on screen = process slot |
||
961 | |||
962 | mov [ebx+TASKDATA.event_mask],dword 1+2+4 ;set default event flags (see 40 function) |
||
963 | |||
964 | inc dword [process_number] |
||
965 | mov eax,[process_number] |
||
966 | mov [ebx+TASKDATA.pid],eax ;set PID |
||
967 | |||
968 | mov ecx,ebx |
||
969 | add ecx,draw_data-0x3000 ;ecx - pointer to draw data |
||
970 | ;set draw data to full screen |
||
971 | mov [ecx+RECT.left],dword 0 |
||
972 | mov [ecx+RECT.top],dword 0 |
||
973 | mov eax,[0xfe00] |
||
974 | mov [ecx+RECT.right],eax |
||
975 | mov eax,[0xfe04] |
||
976 | mov [ecx+RECT.bottom],eax |
||
977 | ;set cr3 register in TSS of application |
||
978 | mov ecx,[new_process_place] |
||
979 | shl ecx,8 |
||
980 | mov eax,[0x80000+APPDATA.dir_table+ecx] |
||
981 | add eax,8+16 ;add flags |
||
982 | mov [l.cr3],eax |
||
983 | |||
984 | mov eax,[app_start] |
||
985 | mov [l.eip],eax ;set eip in TSS |
||
986 | mov eax,[app_esp] |
||
987 | mov [l.esp],eax ;set stack in TSS |
||
988 | |||
989 | ;gdt |
||
990 | ;mov ebx,[new_process_place] |
||
991 | ;shl ebx,3 |
||
992 | mov ax,app_code ;ax - selector of code segment |
||
993 | ;add ax,bx |
||
994 | mov [l.cs],ax |
||
995 | mov ax,app_data |
||
996 | ;add ax,bx ;ax - selector of data segment |
||
997 | mov [l.ss],ax |
||
998 | mov [l.ds],ax |
||
999 | mov [l.es],ax |
||
1000 | mov [l.fs],ax |
||
1001 | mov ax,graph_data ;ax - selector of graphic segment |
||
1002 | mov [l.gs],ax |
||
1003 | mov [l.io],word 128 |
||
1004 | mov [l.eflags],dword 0x11202 |
||
1005 | mov [l.ss0],os_data |
||
1006 | mov ebx,[new_process_place] |
||
1007 | shl ebx,12 |
||
1008 | add ebx,sysint_stack_data+4096 |
||
1009 | mov [l.esp0],ebx |
||
1010 | |||
1011 | ;copy tss to it place |
||
1012 | mov eax,tss_sceleton |
||
1013 | mov ebx,[new_process_place] |
||
1014 | imul ebx,tss_step |
||
1015 | add ebx,tss_data ;ebx - address of application TSS |
||
1016 | mov ecx,120 |
||
1017 | call memmove |
||
1018 | |||
1019 | ;Add IO access table - bit array of permitted ports |
||
1020 | or eax,-1 |
||
1021 | mov edi,[new_process_place] |
||
1022 | imul edi,tss_step |
||
1023 | add edi,tss_data+128 |
||
1024 | mov ecx,2048 |
||
1025 | cld |
||
1026 | rep stosd ;full access to 2048*8=16384 ports |
||
1027 | |||
1028 | mov ecx,ebx ;ecx - address of application TSS |
||
1029 | mov edi,[new_process_place] |
||
1030 | shl edi,3 |
||
1031 | ;set TSS descriptor |
||
1032 | mov [edi+gdts+tss0+0],word tss_step ;limit (size) |
||
1033 | mov [edi+gdts+tss0+2],cx ;part of offset |
||
1034 | mov eax,ecx |
||
1035 | shr eax,16 |
||
1036 | mov [edi+gdts+tss0+4],al ;part of offset |
||
1037 | mov [edi+gdts+tss0+7],ah ;part of offset |
||
1038 | mov [edi+gdts+tss0+5],word 01010000b*256+11101001b ;system flags |
||
1039 | |||
1040 | |||
1041 | ;flush keyboard and buttons queue |
||
1042 | mov [0xf400],byte 0 |
||
1043 | mov [0xf500],byte 0 |
||
1044 | |||
1045 | mov edi,[new_process_place] |
||
1046 | shl edi,5 |
||
1047 | add edi,window_data |
||
1048 | mov ebx,[new_process_place] |
||
1049 | movzx esi,word [0xC000+ebx*2] |
||
1050 | lea esi,[0xC400+esi*2] |
||
1051 | call windowactivate ;gui initialization |
||
1052 | |||
1053 | mov ebx,[new_process_place] |
||
1054 | shl ebx,5 |
||
1055 | ; set if debuggee |
||
1056 | test byte [esp+28], 1 |
||
1057 | jz .no_debug |
||
1058 | mov [0x3000+ebx+TASKDATA.state], 1 ; set process state - suspended |
||
1059 | mov eax, [0x3000] |
||
1060 | mov [0x80000+ebx*8+APPDATA.debugger_slot], eax ;set debugger PID - current |
||
1061 | jmp .debug |
||
1062 | .no_debug: |
||
1063 | mov [0x3000+ebx+TASKDATA.state], 0 ; set process state - running |
||
1064 | .debug: |
||
1065 | |||
1066 | mov esi,new_process_running |
||
1067 | call sys_msg_board_str ;output information about succefull startup |
||
1068 | |||
1069 | ; add esp,4 ;pop pointer to parameters |
||
1070 | ; popad |
||
1071 | mov eax,[process_number] ;set result |
||
1072 | mov [application_table_status],0 ;unlock application_table_status mutex |
||
1073 | call safe_sti |
||
1074 | ret 4 |
||
1075 | |||
1076 | end if0>>-->-->-->-->256 |