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Rev | Author | Line No. | Line |
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1 | ha | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; MenuetOS process management, protected ring3 ;; |
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4 | ;; ;; |
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5 | ;; Distributed under GPL. See file COPYING for details. ;; |
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6 | ;; Copyright 2003 Ville Turjanmaa ;; |
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7 | ;; ;; |
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8 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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9 | |||
10 | align 32 |
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11 | |||
12 | ; GDT TABLE |
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13 | |||
14 | gdts: |
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15 | |||
16 | dw gdte-$-1 |
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17 | dd gdts |
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18 | dw 0 |
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19 | |||
20 | int_code_l: |
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21 | os_code_l: |
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22 | |||
23 | dw 0xffff |
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24 | dw 0x0000 |
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25 | db 0x00 |
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26 | dw 11011111b *256 +10011010b |
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27 | db 0x00 |
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28 | |||
29 | int_data_l: |
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30 | os_data_l: |
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31 | |||
32 | dw 0xffff |
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33 | dw 0x0000 |
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34 | db 0x00 |
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35 | dw 11011111b *256 +10010010b |
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36 | db 0x00 |
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37 | |||
38 | graph_data_l: |
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39 | |||
40 | dw 0x3ff |
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41 | dw 0x0000 |
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42 | db 0x00 |
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43 | dw 11010000b *256 +11110010b |
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44 | db 0x00 |
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45 | |||
46 | tss0_l: |
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47 | times (max_processes+10) dd 0,0 |
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48 | |||
49 | tss0i_l: |
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50 | times 0x41 dq 0 ;(256+10) dd 0,0 |
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51 | |||
52 | app_code_l: |
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4 | poddubny | 53 | dw ((0x80000000-std_application_base_address) shr 12) and 0xffff |
54 | dw 0 |
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55 | db 0 |
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56 | dw 11010000b*256+11111010b+256*((0x80000000-std_application_base_address) shr 28) |
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57 | db std_application_base_address shr 24 |
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1 | ha | 58 | |
59 | app_data_l: |
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4 | poddubny | 60 | dw (0x80000000-std_application_base_address) shr 12 and 0xffff |
61 | dw 0 |
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62 | db 0 |
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63 | dw 11010000b*256+11110010b+256*((0x80000000-std_application_base_address) shr 28) |
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64 | db std_application_base_address shr 24 |
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1 | ha | 65 | |
66 | |||
67 | gdte: |
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68 | |||
69 | |||
70 | |||
71 | ; |
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72 | idtreg: |
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73 | dw 8*0x41-1 |
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74 | dd idts+8 |
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75 | |||
76 | label idts at 0xB100-8 |
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77 | ;idte = idts + 8 + 0x60 |
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78 | |||
79 | ; ; old code below: |
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80 | |||
81 | |||
82 | ;align 32 |
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83 | |||
84 | ;idts: |
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85 | ; dw idte-$-1 |
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86 | ; dd idts+8 |
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87 | ; dw 0 |
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88 | |||
89 | ; times 0x62 dd 0,0 |
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90 | |||
91 | ;idte: |
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92 | |||
93 | build_process_gdt_tss_pointer: |
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94 | |||
95 | mov ecx,tss_data |
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96 | mov edi,0 |
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97 | setgdtl2: |
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98 | mov [edi+gdts+ tss0 +0], word tss_step |
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99 | mov [edi+gdts+ tss0 +2], cx |
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100 | mov eax,ecx |
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101 | shr eax,16 |
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102 | mov [edi+gdts+ tss0 +4], al |
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103 | mov [edi+gdts+ tss0 +7], ah |
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104 | mov [edi+gdts+ tss0 +5], word 01010000b *256 +11101001b |
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105 | add ecx,tss_step |
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106 | add edi,8 |
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107 | cmp edi,8*(max_processes+5) |
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108 | jbe setgdtl2 |
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109 | |||
110 | ret |
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111 | |||
112 | |||
113 | build_interrupt_table: |
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114 | |||
115 | mov [l.eflags],dword 0x11002 |
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116 | mov [l.ss0], int_data |
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117 | ;mov [l.ss1], ring1_data |
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118 | ;mov [l.ss2], ring2_data |
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119 | mov [l.esp0], 0x52000 |
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120 | mov [l.esp1], 0x53000 |
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121 | mov [l.esp2], 0x54000 |
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122 | |||
123 | mov eax,cr3 |
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124 | mov [l.cr3],eax |
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125 | mov [l.cs],int_code |
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126 | mov [l.ss],int_data |
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127 | mov [l.ds],int_data |
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128 | mov [l.es],int_data |
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129 | mov [l.fs],int_data |
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130 | mov [l.gs],int_data |
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131 | |||
132 | mov eax,sys_int |
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133 | mov [l.esp],0x720000 |
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134 | mov edi,0x290000 |
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135 | |||
136 | newint: |
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137 | push edi |
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138 | mov ebx,[eax] |
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139 | mov [l.eip],ebx |
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140 | mov esi,tss_sceleton |
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141 | mov ecx,120/4 |
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142 | cld |
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143 | rep movsd |
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144 | pop edi |
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145 | |||
146 | add edi,128 |
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147 | add [l.esp],1024 |
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148 | add eax,4 |
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149 | |||
150 | cmp eax,sys_int+4*0x40 ;0x60 |
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151 | jbe newint ;jb |
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152 | |||
153 | ;; |
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154 | |||
155 | mov esi,boot_sched_3_2 |
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156 | call boot_log |
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157 | |||
158 | mov ecx,0x290000 |
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159 | mov edi,0 |
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160 | setgdtl2i: |
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161 | mov [edi+gdts+ tss0i +0], word 128 |
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162 | mov [edi+gdts+ tss0i +2], cx |
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163 | mov eax,ecx |
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164 | shr eax,16 |
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165 | mov [edi+gdts+ tss0i +4], al |
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166 | mov [edi+gdts+ tss0i +7], ah |
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167 | mov [edi+gdts+ tss0i +5], word 01010000b *256 +11101001b |
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168 | add ecx,128 |
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169 | add edi,8 |
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170 | cmp edi,8*0x40 ;0x60 |
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171 | jbe setgdtl2i |
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172 | |||
173 | ;; |
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174 | |||
175 | mov esi,boot_sched_3_3 |
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176 | call boot_log |
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177 | |||
178 | mov edi,0 |
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179 | mov edx,tss0i |
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180 | setidtl2: |
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181 | mov [edi+idts+ 8 +0], word 0 |
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182 | mov [edi+idts+ 8 +2], dx |
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183 | mov [edi+idts+ 8 +4], word 10000101b*256 ; task gate DPL=0 |
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184 | ; cmp edi,0x40*8 |
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185 | ; jne no_sw_int |
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186 | ; mov [edi+idts+ 8 +4], word 11100101b*256 ; task gate DPL=3 |
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187 | ; no_sw_int: |
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188 | mov [edi+idts+ 8 +6], word 0 |
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189 | add edx,8 |
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190 | add edi,8 |
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191 | |||
192 | cmp edi,8*0x40 ;0x60 |
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193 | jbe setidtl2 ;jb |
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194 | |||
195 | ; |
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196 | ; THIS CODE WON'T WORK ;-( |
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197 | ; because each process's 0-level stack points to the same area |
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198 | ; and if task switch occurs and another process is being interrupted |
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199 | ; a stack overflow happens |
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200 | ; The only way to solve that problem is to disable interrupts |
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201 | ; while 0x40-handler is working |
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202 | ; Then we have to make all entries in the IDT INTERRUPT gates, not TASK |
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203 | ; mov edi, idts+8 |
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204 | ; mov esi, sys_int |
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205 | ; mov ecx, 32 |
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206 | ; @@: |
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207 | ; mov eax, [esi] |
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208 | ; mov [edi], ax ; lower part of offset |
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209 | ; mov [edi+2], word os_code ; segment selector |
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210 | ; shr eax, 16 |
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211 | ; mov [edi+4], word 10001110b shl 8 ; interrupt descriptor |
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212 | ; mov [edi+6], ax |
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213 | ; add esi, 4 |
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214 | ; add edi, 8 |
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215 | ; dec ecx |
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216 | ; jnz @b |
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217 | ; |
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218 | |||
219 | ret |
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220 | |||
221 | build_syscall_interrupt_table: |
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222 | |||
223 | ;mov dx,tss0sys |
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224 | mov edi,8*0x40+idts+8 |
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3 | halyavin | 225 | mov [edi + 0], word (i40 and ((1 shl 16)-1)) |
226 | mov [edi + 2], word os_code |
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227 | mov [edi + 4], word 11101110b*256 |
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228 | mov [edi + 6], word (i40 shr 16) |
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1 | ha | 229 | |
230 | ret |
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231 | |||
232 | |||
233 | align 4 |
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234 | i38: |
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235 | ; load data selectors |
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236 | pushfd |
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237 | push ds es |
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238 | push eax |
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239 | mov ax, os_data |
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240 | mov ds, ax |
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241 | mov es, ax |
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242 | pop eax |
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243 | |||
244 | pushad |
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245 | push edi |
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246 | mov edi, eax |
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247 | mov eax, ebx |
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248 | mov ebx, ecx |
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249 | mov ecx, edx |
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250 | mov esi, [esp] |
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251 | and edi, 0xFF |
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252 | call dword [servetable+edi*4] |
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253 | add esp, 4 |
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254 | popad |
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255 | pop es ds |
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256 | popfd |
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257 | iret |
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258 | |||
259 | |||
260 | iglobal |
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261 | sys_int: |
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262 | dd s0,s1,s2,s3,s4,s5,s6,s7,s8,s9,sa,sb,sc,sd,se,sf |
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263 | |||
264 | dd s10 ,s11 ; ,i_unknown12,i_unknown13 |
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265 | ; dd i_unknown14,i_unknown15,i_unknown16,i_unknown17 |
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266 | ; dd i_unknown18,i_unknown19,i_unknown1a,i_unknown1b |
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267 | ; dd i_unknown1c,i_unknown1d,i_unknown1e,i_unknown1f |
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268 | times 14 dd unknown_interrupt |
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269 | |||
270 | dd irq0 ,irq1 ,p_irq2 ,p_irq3 ,p_irq4 ,p_irq5,p_irq6 ,p_irq7 |
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271 | dd p_irq8,p_irq9,p_irq10,p_irq11,p_irq12,irqD ,p_irq14,p_irq15 |
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272 | |||
273 | ;dd i_unknown30,i_unknown31,i_unknown32,i_unknown33 |
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274 | ;dd i_unknown34,i_unknown35,i_unknown36,i_unknown37 |
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275 | ;dd i_unknown38,i_unknown39,i_unknown3a,i_unknown3b |
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276 | ;dd i_unknown3c,i_unknown3d,i_unknown3e,i_unknown3f |
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277 | times 16 dd unknown_interrupt |
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278 | |||
279 | dd i40 |
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280 | endg |
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281 | |||
282 | uglobal |
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283 | tss_sceleton: |
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284 | l.back dw 0,0 |
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285 | l.esp0 dd 0 |
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286 | l.ss0 dw 0,0 |
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287 | l.esp1 dd 0 |
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288 | l.ss1 dw 0,0 |
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289 | l.esp2 dd 0 |
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290 | l.ss2 dw 0,0 |
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291 | l.cr3 dd 0 |
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292 | l.eip dd 0 |
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293 | l.eflags dd 0 |
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294 | l.eax dd 0 |
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295 | l.ecx dd 0 |
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296 | l.edx dd 0 |
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297 | l.ebx dd 0 |
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298 | l.esp dd 0 |
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299 | l.ebp dd 0 |
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300 | l.esi dd 0 |
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301 | l.edi dd 0 |
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302 | l.es dw 0,0 |
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303 | l.cs dw 0,0 |
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304 | l.ss dw 0,0 |
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305 | l.ds dw 0,0 |
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306 | l.fs dw 0,0 |
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307 | l.gs dw 0,0 |
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308 | l.ldt dw 0,0 |
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309 | l.trap dw 0 |
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310 | l.io dw 0 |
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311 | endg |
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312 | |||
313 | s0: |
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314 | cli |
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315 | |||
316 | mov [error_interrupt],0x0 |
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317 | mov [error_interrupt_entry],dword s0 |
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318 | |||
319 | call show_error_parameters |
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320 | |||
321 | mov edx,[0x3010] |
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322 | mov [edx+0xa],byte 4 |
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323 | |||
324 | jmp change_task |
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325 | |||
326 | |||
327 | s1: |
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328 | cli |
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329 | |||
330 | mov [error_interrupt],0x1 |
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331 | mov [error_interrupt_entry],dword s1 |
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332 | |||
333 | call show_error_parameters |
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334 | |||
335 | mov edx,[0x3010] |
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336 | mov [edx+0xa],byte 4 |
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337 | |||
338 | jmp change_task |
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339 | |||
340 | s2: |
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341 | cli |
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342 | |||
343 | mov [error_interrupt],0x2 |
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344 | mov [error_interrupt_entry],dword s2 |
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345 | |||
346 | call show_error_parameters |
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347 | |||
348 | mov edx,[0x3010] |
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349 | mov [edx+0xa],byte 4 |
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350 | |||
351 | jmp change_task |
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352 | |||
353 | s3: |
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354 | cli |
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355 | |||
356 | mov [error_interrupt],0x3 |
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357 | mov [error_interrupt_entry],dword s3 |
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358 | |||
359 | call show_error_parameters |
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360 | |||
361 | mov edx,[0x3010] |
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362 | mov [edx+0xa],byte 4 |
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363 | |||
364 | jmp change_task |
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365 | |||
366 | s4: |
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367 | cli |
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368 | |||
369 | mov [error_interrupt],0x4 |
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370 | mov [error_interrupt_entry],dword s4 |
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371 | |||
372 | call show_error_parameters |
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373 | |||
374 | mov edx,[0x3010] |
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375 | mov [edx+0xa],byte 4 |
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376 | |||
377 | jmp change_task |
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378 | |||
379 | s5: |
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380 | cli |
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381 | |||
382 | mov [error_interrupt],0x5 |
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383 | mov [error_interrupt_entry],dword s5 |
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384 | |||
385 | call show_error_parameters |
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386 | |||
387 | mov edx,[0x3010] |
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388 | mov [edx+0xa],byte 4 |
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389 | |||
390 | jmp change_task |
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391 | |||
392 | s6: |
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393 | cli |
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394 | |||
395 | mov [error_interrupt],0x6 |
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396 | mov [error_interrupt_entry],dword s6 |
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397 | |||
398 | call show_error_parameters |
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399 | |||
400 | mov edx,[0x3010] |
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401 | mov [edx+0xa],byte 4 |
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402 | |||
403 | jmp change_task |
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404 | |||
405 | |||
406 | ;;;;;;;;;;;;;;;;;;;;;;; |
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407 | ;; FPU ERROR HANDLER ;; |
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408 | ;;;;;;;;;;;;;;;;;;;;;;; |
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409 | |||
410 | align 4 |
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411 | s7: |
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412 | ; |
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413 | cli |
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414 | ; |
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415 | mov edi, 7*8 |
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416 | mov [edi+gdts+ tss0i +5], word 01010000b *256 +11101001b |
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417 | |||
418 | mov edi,[0x3000] |
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419 | shl edi, 3 |
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420 | mov [edi+gdts+ tss0 +5], word 01010000b *256 +11101001b |
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421 | |||
422 | |||
423 | ; save a copy of current task's TSS to fpu_tss |
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424 | mov esi,[0x3000] |
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425 | imul esi,tss_step |
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426 | add esi,tss_data |
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427 | mov edi,fpu_tss |
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428 | mov ecx,120/4 |
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429 | cld |
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430 | rep movsd |
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431 | |||
432 | ; get base address of our TSS and... |
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433 | mov esi,[0x3000] |
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434 | imul esi,tss_step |
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435 | add esi,tss_data |
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436 | |||
437 | ; ...init segments, stack, eip, flags |
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438 | mov word [esi+l.cs-tss_sceleton],int_code |
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439 | mov word [esi+l.ss-tss_sceleton],int_data |
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440 | mov word [esi+l.ds-tss_sceleton],int_data |
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441 | mov word [esi+l.es-tss_sceleton],int_data |
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442 | mov word [esi+l.fs-tss_sceleton],int_data |
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443 | mov word [esi+l.gs-tss_sceleton],int_data |
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444 | mov dword [esi+l.esp-tss_sceleton],fpu_stack+4*8 |
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445 | mov dword [esi+l.eip-tss_sceleton],fpu_handler |
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446 | mov dword [esi+l.eflags-tss_sceleton],0x11002 |
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447 | |||
448 | ; then execute this task |
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449 | mov ebx, [0x3000] |
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450 | shl ebx,3 |
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451 | add ebx, tss0 ;t |
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452 | mov [0xB004], bx |
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453 | |||
454 | jmp pword [0xB000] |
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455 | |||
456 | jmp s7 |
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457 | |||
458 | s8: |
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459 | cli |
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460 | |||
461 | mov [error_interrupt],0x8 |
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462 | mov [error_interrupt_entry],dword s8 |
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463 | |||
464 | call show_error_parameters |
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465 | |||
466 | mov edx,[0x3010] |
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467 | mov [edx+0xa],byte 4 |
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468 | |||
469 | jmp change_task |
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470 | |||
471 | s9: |
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472 | cli |
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473 | |||
474 | mov [error_interrupt],0x9 |
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475 | mov [error_interrupt_entry],dword s9 |
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476 | |||
477 | call show_error_parameters |
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478 | |||
479 | mov edx,[0x3010] |
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480 | mov [edx+0xa],byte 4 |
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481 | |||
482 | jmp change_task |
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483 | |||
484 | sa: |
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485 | cli |
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486 | |||
487 | mov [error_interrupt],0xa |
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488 | mov [error_interrupt_entry],dword sa |
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489 | |||
490 | call show_error_parameters |
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491 | |||
492 | mov edx,[0x3010] |
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493 | mov [edx+0xa],byte 4 |
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494 | |||
495 | jmp change_task |
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496 | |||
497 | sb: |
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498 | cli |
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499 | |||
500 | mov [error_interrupt],0xb |
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501 | mov [error_interrupt_entry],dword sb |
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502 | |||
503 | call show_error_parameters |
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504 | |||
505 | mov edx,[0x3010] |
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506 | mov [edx+0xa],byte 4 |
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507 | |||
508 | jmp change_task |
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509 | |||
510 | sc: |
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511 | cli |
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512 | |||
513 | mov [error_interrupt],0xc |
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514 | mov [error_interrupt_entry],dword sc |
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515 | |||
516 | call show_error_parameters |
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517 | |||
518 | mov edx,[0x3010] |
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519 | mov [edx+0xa],byte 4 |
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520 | |||
521 | jmp change_task |
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522 | |||
523 | sd: |
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524 | cli |
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525 | |||
526 | mov [error_interrupt],0xd |
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527 | mov [error_interrupt_entry],dword sd |
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528 | |||
529 | call show_error_parameters |
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530 | |||
531 | mov edx,[0x3010] |
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532 | mov [edx+0xa],byte 4 |
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533 | |||
534 | jmp change_task |
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535 | |||
536 | se: |
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537 | cli |
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538 | |||
539 | mov [error_interrupt],0xe |
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540 | mov [error_interrupt_entry],dword se |
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541 | |||
542 | call show_error_parameters |
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543 | |||
544 | mov edx,[0x3010] |
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545 | mov [edx+0xa],byte 4 |
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546 | |||
547 | jmp change_task |
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548 | |||
549 | sf: |
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550 | cli |
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551 | |||
552 | mov [error_interrupt],0xf |
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553 | mov [error_interrupt_entry],dword sf |
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554 | |||
555 | call show_error_parameters |
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556 | |||
557 | mov edx,[0x3010] |
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558 | mov [edx+0xa],byte 4 |
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559 | |||
560 | jmp change_task |
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561 | |||
562 | s10: |
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563 | cli |
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564 | |||
565 | mov [error_interrupt],0x10 |
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566 | mov [error_interrupt_entry],dword s10 |
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567 | |||
568 | call show_error_parameters |
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569 | |||
570 | mov edx,[0x3010] |
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571 | mov [edx+0xa],byte 4 |
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572 | |||
573 | jmp change_task |
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574 | |||
575 | s11: |
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576 | cli |
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577 | |||
578 | mov [error_interrupt],0x11 |
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579 | mov [error_interrupt_entry],dword s11 |
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580 | |||
581 | call show_error_parameters |
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582 | |||
583 | mov edx,[0x3010] |
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584 | mov [edx+0xa],byte 4 |
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585 | |||
586 | jmp change_task |
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587 | |||
588 | writehex: |
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589 | |||
590 | pusha |
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591 | |||
592 | mov ecx,eax |
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593 | mov ax,word [printerrorat] |
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594 | shl eax,16 |
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595 | mov ax,[esp+32+4] |
||
596 | sub ax,60 |
||
597 | mov edx,1 |
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598 | mov esi,8 |
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599 | mov ebx,0xffffff |
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600 | whl1: |
||
601 | push ecx |
||
602 | and ecx,0xf |
||
603 | add ecx,hexletters |
||
604 | mov edi,1 |
||
605 | |||
606 | mov cl,[ecx] |
||
607 | mov edi,[write_error_to] |
||
608 | mov [edi],cl |
||
609 | dec [write_error_to] |
||
610 | |||
611 | pop ecx |
||
612 | shr ecx,4 |
||
613 | sub eax,6*65536 |
||
614 | dec esi |
||
615 | jnz whl1 |
||
616 | |||
617 | popa |
||
618 | ret |
||
619 | |||
620 | iglobal |
||
621 | hexletters db '0123456789ABCDEF' |
||
622 | |||
623 | error_interrupt dd -1 |
||
624 | error_interrupt_entry dd -1 |
||
625 | |||
626 | printerrorat dd 300 |
||
627 | |||
628 | process_error db 'K : Process - forced terminate INT: 00000000',13,10,0 |
||
629 | process_pid db 'K : Process - forced terminate PID: 00000000',13,10,0 |
||
630 | process_eip db 'K : Process - forced terminate EIP: 00000000',13,10,0 |
||
631 | system_error db 'K : Kernel error',13,10,0 |
||
632 | endg |
||
633 | |||
634 | uglobal |
||
635 | write_error_to dd 0x0 |
||
636 | endg |
||
637 | |||
638 | show_error_parameters: |
||
639 | |||
640 | mov [write_error_to],process_pid+43 |
||
641 | mov eax,[0x3000] |
||
642 | shl eax, 5 |
||
643 | mov eax,[0x3000+4+eax] |
||
644 | call writehex |
||
645 | |||
646 | mov [write_error_to],process_error+43 |
||
647 | mov eax,[error_interrupt] |
||
648 | call writehex |
||
649 | |||
650 | mov eax,[0x3000] |
||
651 | shl eax,8 |
||
652 | cmp [0x80000+eax+0xB0],dword 0 |
||
653 | jnz .system_error |
||
654 | |||
655 | mov eax,[0x3000] |
||
656 | imul eax,tss_step |
||
657 | mov eax,[eax+tss_data+l.eip-tss_sceleton] |
||
658 | .out_eip: |
||
659 | mov [write_error_to],process_eip+43 |
||
660 | call writehex |
||
661 | |||
662 | mov esi,process_error |
||
663 | call sys_msg_board_str |
||
664 | |||
665 | mov esi,process_pid |
||
666 | call sys_msg_board_str |
||
667 | |||
668 | mov esi,process_eip |
||
669 | call sys_msg_board_str |
||
670 | |||
671 | ret |
||
672 | |||
673 | .system_error: |
||
674 | mov esi,system_error |
||
675 | call sys_msg_board_str |
||
676 | mov eax,[0x3000] |
||
677 | shl eax,7 |
||
678 | mov eax,[eax+0x298000+l.eip-tss_sceleton] |
||
679 | jmp .out_eip |
||
680 | |||
681 | |||
682 | irq5: |
||
683 | |||
684 | call restore_caller |
||
685 | |||
686 | mov dx,word [sb16] |
||
687 | add dx,0xe |
||
688 | in al,dx |
||
689 | |||
690 | ; mov byte [SB16_Status],0 |
||
691 | |||
692 | mov [check_idle_semaphore],5 |
||
693 | |||
694 | mov al,0x20 |
||
695 | out 0x20,al |
||
696 | |||
697 | call return_to_caller |
||
698 | |||
699 | jmp irq5 |
||
700 | |||
701 | irqD: |
||
702 | |||
703 | call restore_caller |
||
704 | |||
705 | mov dx,0xf0 |
||
706 | mov al,0 |
||
707 | out dx,al |
||
708 | |||
709 | mov dx,0xa0 |
||
710 | mov al,0x20 |
||
711 | out dx,al |
||
712 | mov dx,0x20 |
||
713 | out dx,al |
||
714 | |||
715 | mov ds,cx |
||
716 | mov es,cx |
||
717 | mov fs,cx |
||
718 | |||
719 | call return_to_caller |
||
720 | |||
721 | jmp irqD |
||
722 | |||
723 | p_irq2: |
||
724 | |||
725 | call restore_caller |
||
726 | |||
727 | mov edi,2 ; 1 |
||
728 | call irqhandler ; 2/5 |
||
729 | |||
730 | call return_to_caller |
||
731 | |||
732 | jmp p_irq2 |
||
733 | |||
734 | p_irq3: |
||
735 | |||
736 | call restore_caller |
||
737 | |||
738 | mov edi,3 |
||
739 | call irqhandler |
||
740 | |||
741 | call return_to_caller |
||
742 | |||
743 | jmp p_irq3 |
||
744 | |||
745 | p_irq4: |
||
746 | |||
747 | call restore_caller |
||
748 | |||
749 | mov edi,4 |
||
750 | call irqhandler |
||
751 | |||
752 | call return_to_caller |
||
753 | |||
754 | jmp p_irq4 |
||
755 | |||
756 | p_irq5: |
||
757 | |||
758 | call restore_caller |
||
759 | |||
760 | mov edi,5 |
||
761 | call irqhandler |
||
762 | |||
763 | call return_to_caller |
||
764 | |||
765 | jmp p_irq5 |
||
766 | |||
767 | p_irq6: |
||
768 | |||
769 | call restore_caller |
||
770 | |||
771 | call fdc_irq |
||
772 | |||
773 | mov edi,6 |
||
774 | call irqhandler |
||
775 | |||
776 | call return_to_caller |
||
777 | |||
778 | jmp p_irq6 |
||
779 | |||
780 | p_irq7: |
||
781 | |||
782 | call restore_caller |
||
783 | |||
784 | mov edi,7 |
||
785 | call irqhandler |
||
786 | |||
787 | call return_to_caller |
||
788 | |||
789 | jmp p_irq7 |
||
790 | |||
791 | p_irq8: |
||
792 | |||
793 | call restore_caller |
||
794 | |||
795 | mov edi,8 |
||
796 | call irqhandler |
||
797 | |||
798 | call return_to_caller |
||
799 | |||
800 | jmp p_irq8 |
||
801 | |||
802 | p_irq9: |
||
803 | |||
804 | call restore_caller |
||
805 | |||
806 | mov edi,9 |
||
807 | call irqhandler |
||
808 | |||
809 | call return_to_caller |
||
810 | |||
811 | jmp p_irq9 |
||
812 | |||
813 | p_irq10: |
||
814 | |||
815 | call restore_caller |
||
816 | |||
817 | mov edi,10 |
||
818 | call irqhandler |
||
819 | |||
820 | call return_to_caller |
||
821 | |||
822 | jmp p_irq10 |
||
823 | |||
824 | p_irq11: |
||
825 | |||
826 | call restore_caller |
||
827 | |||
828 | mov edi,11 |
||
829 | call irqhandler |
||
830 | |||
831 | call return_to_caller |
||
832 | |||
833 | jmp p_irq11 |
||
834 | |||
835 | p_irq12: |
||
836 | |||
837 | call restore_caller |
||
838 | |||
839 | mov edi,12 |
||
840 | call irqhandler |
||
841 | |||
842 | call return_to_caller |
||
843 | |||
844 | jmp p_irq12 |
||
845 | |||
846 | p_irq13: |
||
847 | |||
848 | call restore_caller |
||
849 | |||
850 | mov edi,13 |
||
851 | call irqhandler |
||
852 | |||
853 | call return_to_caller |
||
854 | |||
855 | jmp p_irq13 |
||
856 | |||
857 | p_irq14: |
||
858 | |||
859 | call restore_caller |
||
860 | |||
861 | mov edi,14 |
||
862 | call irqhandler |
||
863 | |||
864 | call return_to_caller |
||
865 | |||
866 | jmp p_irq14 |
||
867 | |||
868 | p_irq15: |
||
869 | |||
870 | call restore_caller |
||
871 | |||
872 | mov edi,15 |
||
873 | call irqhandler |
||
874 | |||
875 | call return_to_caller |
||
876 | |||
877 | jmp p_irq15 |
||
878 | |||
879 | |||
880 | |||
881 | align 4 |
||
882 | restore_caller: |
||
883 | |||
884 | mov edi,[0x3000] |
||
885 | shl edi, 3 |
||
886 | mov [edi+gdts+ tss0 +5], word 01010000b *256 +11101001b |
||
887 | |||
888 | ret |
||
889 | |||
890 | align 4 |
||
891 | return_to_caller: |
||
892 | |||
893 | mov ebx,[0x3000] |
||
894 | shl bx,3 |
||
895 | add bx,tss0;t |
||
896 | mov [tss_irq12],bx |
||
897 | |||
898 | db 0xea |
||
899 | dd 0 |
||
900 | tss_irq12 dw tss0;t |
||
901 | |||
902 | ret |
||
903 | |||
904 | uglobal |
||
905 | irqh dd 0x0 |
||
906 | endg |
||
907 | |||
908 | irqhandler: |
||
909 | |||
910 | push edi |
||
911 | |||
912 | mov esi,edi ; 1 |
||
913 | shl esi,6 ; 1 |
||
914 | add esi,irq00read ; 1 |
||
915 | shl edi,12 ; 1 |
||
916 | add edi,0x2E0000 |
||
917 | |||
918 | mov [check_idle_semaphore],5 |
||
919 | |||
920 | irqnewread: |
||
921 | |||
922 | mov dx,[esi] ; 2+ |
||
923 | |||
924 | cmp dx,0 ; 1 |
||
925 | jz irqover |
||
926 | cmp [esi+3],byte 1 ; 2 ; byte read |
||
927 | jne noirqbyte ; 4-11 |
||
928 | |||
929 | in al,dx |
||
930 | |||
931 | mov edx,[edi] |
||
932 | cmp edx,4000 |
||
933 | je irqfull |
||
934 | mov ebx,edi |
||
935 | add ebx,0x10 |
||
936 | add ebx,edx |
||
937 | mov [ebx],al |
||
938 | inc edx |
||
939 | mov [edi],edx |
||
940 | |||
941 | add esi,4 |
||
942 | jmp irqnewread |
||
943 | |||
944 | noirqbyte: |
||
945 | |||
946 | |||
947 | cmp [esi+3],byte 2 ; word read |
||
948 | jne noirqword |
||
949 | |||
950 | in ax,dx |
||
951 | |||
952 | mov edx,[edi] |
||
953 | cmp edx,4000 |
||
954 | je irqfull |
||
955 | mov ebx,edi |
||
956 | add ebx,0x10 |
||
957 | add ebx,edx |
||
958 | mov [ebx],ax |
||
959 | add edx,2 |
||
960 | mov [edi],edx |
||
961 | add esi,4 |
||
962 | jmp irqnewread |
||
963 | |||
964 | noirqword: |
||
965 | irqfull: |
||
966 | irqover: |
||
967 | |||
968 | mov al,0x20 ; ready for next irq |
||
969 | out 0x20,al |
||
970 | |||
971 | pop ebx |
||
972 | cmp ebx,7 |
||
973 | jbe noa0 |
||
974 | out 0xa0,al |
||
975 | noa0: |
||
976 | |||
977 | ret |
||
978 | |||
979 | |||
980 | ; this code should never get control! |
||
981 | ; applications can use only 0x40 interrupt |
||
982 | unknown_interrupt: |
||
983 | @@: call change_task |
||
984 | jmp @b |
||
985 | |||
986 | |||
987 | |||
988 | |||
989 | set_application_table_status: |
||
990 | push eax |
||
991 | |||
992 | mov eax,[0x3000] |
||
993 | ;imul eax,32 |
||
994 | shl eax, 5 |
||
995 | add eax,0x3000+4 |
||
996 | mov eax,[eax] |
||
997 | |||
998 | mov [application_table_status],eax |
||
999 | |||
1000 | pop eax |
||
1001 | |||
1002 | ret |
||
1003 | |||
1004 | |||
1005 | clear_application_table_status: |
||
1006 | push eax |
||
1007 | |||
1008 | mov eax,[0x3000] |
||
1009 | ;imul eax,32 |
||
1010 | shl eax, 5 |
||
1011 | add eax,0x3000+4 |
||
1012 | mov eax,[eax] |
||
1013 | |||
1014 | cmp eax,[application_table_status] |
||
1015 | jne apptsl1 |
||
1016 | mov [application_table_status],0 |
||
1017 | apptsl1: |
||
1018 | |||
1019 | pop eax |
||
1020 | |||
1021 | ret |
||
1022 | |||
1023 | uglobal |
||
1024 | old_code_0 dd 0x0 |
||
1025 | old_code_1 dd 0x0 |
||
1026 | |||
1027 | ; |
||
1028 | |||
1029 | new_code_0 dd 0x0 |
||
1030 | new_code_1 dd 0x0 |
||
1031 | |||
1032 | new_data_0 dd 0x0 |
||
1033 | new_data_1 dd 0x0 |
||
1034 | |||
1035 | new_pos dd 0x0 |
||
1036 | new_amount dd 0x0 |
||
1037 | endg |
||
1038 | |||
1039 | |||
1040 | sys_resize_app_memory: |
||
1041 | ; eax = 1 - resize |
||
1042 | ; ebx = new amount of memory |
||
1043 | |||
1044 | cmp eax,1 |
||
4 | poddubny | 1045 | jne .no_application_mem_resize |
1 | ha | 1046 | |
4 | poddubny | 1047 | jmp new_mem_resize ;resize for new type of processes |
1 | ha | 1048 | |
1049 | |||
4 | poddubny | 1050 | .no_application_mem_resize: |
1 | ha | 1051 | |
1052 | ret |
||
1053 | |||
1054 | |||
1055 | |||
1056 | get_app_params: |
||
1057 | |||
1058 | push eax |
||
1059 | |||
1060 | cmp [0x90000+6],word '00' |
||
1061 | jne no_00_header |
||
1062 | |||
1063 | mov eax,[0x90000+12] |
||
1064 | mov [app_start],eax |
||
1065 | mov eax,[0x90000+16] |
||
1066 | mov [app_i_end],eax |
||
1067 | mov eax,[0x90000+20] |
||
1068 | mov [app_mem],eax |
||
1069 | shr eax,1 |
||
1070 | sub eax,0x10 |
||
1071 | mov [app_esp],eax |
||
1072 | mov eax,[0x90000+24] |
||
1073 | mov [app_i_param],eax |
||
1074 | mov [app_i_icon],dword 0 |
||
1075 | |||
1076 | pop eax |
||
1077 | mov esi,1 |
||
1078 | ret |
||
1079 | |||
1080 | no_00_header: |
||
1081 | |||
1082 | |||
1083 | cmp [0x90000+6],word '01' |
||
1084 | jne no_01_header |
||
1085 | |||
1086 | mov eax,[0x90000+12] |
||
1087 | mov [app_start],eax |
||
1088 | mov eax,[0x90000+16] |
||
1089 | mov [app_i_end],eax |
||
1090 | mov eax,[0x90000+20] |
||
1091 | mov [app_mem],eax |
||
1092 | mov eax,[0x90000+24] |
||
1093 | mov [app_esp],eax |
||
1094 | mov eax,[0x90000+28] |
||
1095 | mov [app_i_param],eax |
||
1096 | mov eax,[0x90000+32] |
||
1097 | mov [app_i_icon],eax |
||
1098 | |||
1099 | pop eax |
||
1100 | mov esi,1 |
||
1101 | ret |
||
1102 | |||
1103 | no_01_header: |
||
1104 | |||
1105 | pop eax |
||
1106 | mov esi,0 |
||
1107 | ret |
||
1108 | |||
1109 | |||
1110 | start_application_fl: |
||
1111 | jmp new_start_application_fl |
||
1112 | |||
1113 | ;************************************************************************ |
||
1114 | |||
1115 | start_application_floppy: |
||
1116 | jmp new_start_application_floppy |
||
1117 | |||
1118 | ;******************************************************************** |
||
1119 | |||
1120 | start_application_hd: |
||
1121 | jmp new_start_application_hd |
||
1122 | |||
1123 | uglobal |
||
4 | poddubny | 1124 | ;threadstring dd 0x0 |
1 | ha | 1125 | new_process_place dd 0x0 |
4 | poddubny | 1126 | ;check_processes dd 0x0 |
1127 | ;dec3004 db 0x0 |
||
1 | ha | 1128 | app_start dd 0x0 |
1129 | app_i_end dd 0x0 |
||
1130 | app_mem dd 0x0 |
||
1131 | app_esp dd 0x0 |
||
1132 | app_i_param dd 0x0 |
||
1133 | app_i_icon dd 0x0 |
||
1134 | app_mem_pos dd 0x0 |
||
4 | poddubny | 1135 | ;thread_create dd 0x0 |
1136 | ;gdt_place dd 0x0 |
||
1 | ha | 1137 | endg |
1138 | |||
1139 | iglobal |
||
1140 | hd_app_string db 'HDAPP ' |
||
1141 | process_loading db 'K : Process - loading ',13,10,0 |
||
1142 | process_running db 'K : Process - done',13,10,0 |
||
1143 | first_gdt_search dd 0x2 |
||
1144 | endg |
||
1145 | |||
1146 | |||
1147 | sys_threads: |
||
1148 | |||
1149 | ; eax=1 create thread |
||
1150 | ; |
||
1151 | ; ebx=thread start |
||
1152 | ; ecx=thread stack value |
||
1153 | ; |
||
1154 | ; on return : eax = pid |
||
1155 | jmp new_sys_threads |
||
1156 | |||
1157 | |||
1158 | |||
1159 | iglobal |
||
1160 | process_terminating db 'K : Process - terminating',13,10,0 |
||
1161 | process_terminated db 'K : Process - done',13,10,0 |
||
1162 | endg |
||
1163 | |||
1164 | |||
1165 | terminate: ; terminate application |
||
1166 | push esi |
||
1167 | mov esi,process_terminating |
||
1168 | call sys_msg_board_str |
||
1169 | pop esi |
||
1170 | ;start memory manager code |
||
1171 | ; mov eax,esi |
||
1172 | ; call MEM_Heap_Clean |
||
1173 | ;end memory manager code |
||
1174 | |||
1175 | |||
1176 | cli |
||
1177 | cmp [application_table_status],0 |
||
1178 | je term9 |
||
1179 | sti |
||
1180 | call change_task |
||
1181 | jmp terminate |
||
1182 | term9: |
||
1183 | |||
1184 | call set_application_table_status |
||
1185 | |||
1186 | mov eax,esi |
||
1187 | call dispose_app_cr3_table |
||
1188 | |||
1189 | mov [first_gdt_search],0x2 ; start gdt search from beginning |
||
1190 | |||
1191 | cmp [prev_user_of_fpu],esi ; if user fpu last -> fpu user = 1 |
||
1192 | jne fpu_ok_1 |
||
1193 | mov [prev_user_of_fpu],1 |
||
1194 | fpu_ok_1: |
||
1195 | |||
1196 | mov [0xf400],byte 0 ; empty keyboard buffer |
||
1197 | mov [0xf500],byte 0 ; empty button buffer |
||
1198 | |||
4 | poddubny | 1199 | ; mov ecx,esi ; clear memory reserv. |
1200 | ; shl ecx,3 |
||
1201 | ; mov [ecx+gdts+ app_code-3 +0],dword 0 |
||
1202 | ; mov [ecx+gdts+ app_code-3 +4],dword 0 |
||
1203 | ; mov [ecx+gdts+ app_data-3 +0],dword 0 |
||
1204 | ; mov [ecx+gdts+ app_data-3 +4],dword 0 |
||
1 | ha | 1205 | |
1206 | mov edi, esi |
||
1207 | |||
1208 | |||
1209 | mov [usedi40+eax],byte 0 |
||
1210 | |||
1211 | |||
1212 | mov ecx,esi ; remove buttons |
||
1213 | bnewba2: |
||
1214 | mov edi,[0xfe88] |
||
1215 | mov eax,edi |
||
1216 | cld |
||
1217 | movzx ebx,word [edi] |
||
1218 | inc bx |
||
1219 | bnewba: |
||
1220 | dec bx |
||
1221 | jz bnmba |
||
1222 | add eax,0x10 |
||
1223 | cmp cx,[eax] |
||
1224 | jnz bnewba |
||
1225 | pusha |
||
1226 | mov ecx,ebx |
||
1227 | inc ecx |
||
1228 | shl ecx,4 |
||
1229 | mov ebx,eax |
||
1230 | add eax,0x10 |
||
1231 | call memmove |
||
1232 | dec dword [edi] |
||
1233 | popa |
||
1234 | jmp bnewba2 |
||
1235 | bnmba: |
||
1236 | |||
1237 | pusha ; save window coordinates for window restoring |
||
1238 | cld |
||
1239 | shl esi,5 |
||
1240 | add esi,window_data |
||
1241 | mov ax,[esi+0] |
||
1242 | mov word [dlx],ax |
||
1243 | mov bx,[esi+8] |
||
1244 | add ax,bx |
||
1245 | mov word [dlxe],ax |
||
1246 | mov ax,[esi+4] |
||
1247 | mov word [dly],ax |
||
1248 | mov bx,[esi+12] |
||
1249 | add ax,bx |
||
1250 | mov word [dlye],ax |
||
1251 | mov [esi+0],word 0 |
||
1252 | mov [esi+8],word 5 |
||
1253 | mov ax,[0xFE04] |
||
1254 | mov [esi+4],ax |
||
1255 | mov [esi+12],word 5 |
||
1256 | xor eax, eax |
||
1257 | mov [esi+16],eax;dword 0 |
||
1258 | mov [esi+20],eax;dword 0 |
||
1259 | mov [esi+24],eax;dword 0 |
||
1260 | mov [esi+28],eax;dword 0 |
||
1261 | popa |
||
1262 | |||
1263 | pusha |
||
1264 | mov edi,esi |
||
1265 | shl edi,5 |
||
1266 | add edi,window_data |
||
1267 | mov ecx,32/4 |
||
1268 | xor eax, eax |
||
1269 | ; cld |
||
1270 | rep stosd |
||
1271 | |||
1272 | mov eax,[0xFE04] ; set window to start from maxy+1 |
||
1273 | add eax,2 |
||
1274 | |||
1275 | mov edi,esi |
||
1276 | shl edi,5 |
||
1277 | add edi,window_data |
||
1278 | mov [edi+4],eax |
||
1279 | |||
1280 | popa |
||
1281 | |||
1282 | pusha |
||
1283 | mov edi,esi |
||
1284 | shl edi,5 |
||
1285 | add edi,draw_data |
||
1286 | mov ecx,32/4 |
||
1287 | xor eax, eax |
||
1288 | ; cld |
||
1289 | rep stosd |
||
1290 | popa |
||
1291 | |||
1292 | pusha ; at 0x80000+ |
||
1293 | mov edi,esi |
||
1294 | shl edi,8 |
||
1295 | add edi,0x80000 |
||
1296 | mov ecx,256/4 |
||
1297 | xor eax, eax |
||
1298 | ; cld |
||
1299 | rep stosd |
||
1300 | popa |
||
1301 | |||
1302 | pusha ; name to spaces |
||
1303 | mov edi,esi |
||
1304 | shl edi,8 |
||
1305 | add edi,0x80000 |
||
1306 | mov ecx,11 |
||
1307 | mov eax,' ' |
||
1308 | ; cld |
||
1309 | rep stosb |
||
1310 | popa |
||
1311 | |||
1312 | pusha ; C000 --> C400 |
||
1313 | mov eax, 0xc000 |
||
1314 | mov esi, 0 |
||
1315 | nlc40: |
||
1316 | add eax, 2 |
||
1317 | inc esi |
||
1318 | cmp esi, [0x3004] |
||
1319 | jae nlc41 |
||
1320 | movzx ecx, word [eax] |
||
1321 | mov [0xC400 + ecx*2], si |
||
1322 | jmp nlc40 |
||
1323 | nlc41: |
||
1324 | popa |
||
1325 | |||
1326 | pusha ; remove hd1 reservation |
||
1327 | mov edx,esi |
||
1328 | shl edx, 5 ;imul edx,0x20 |
||
1329 | add edx,0x3000 |
||
1330 | mov edx,[edx+4] |
||
1331 | cmp [hd1_status],edx |
||
1332 | jne no_hd1_s_remove |
||
1333 | mov [hd1_status],0 |
||
1334 | no_hd1_s_remove: |
||
1335 | popa |
||
1336 | |||
1337 | pusha ; remove all irq reservations |
||
1338 | mov edx,esi |
||
1339 | shl edx, 5 ;imul edx,0x20 |
||
1340 | add edx,0x3000 |
||
1341 | mov edx,[edx+4] |
||
1342 | mov edi,irq_owner |
||
1343 | mov ecx,16 |
||
1344 | newirqfree: |
||
1345 | cmp [edi],edx |
||
1346 | jne nofreeirq |
||
1347 | mov [edi],dword 0 |
||
1348 | nofreeirq: |
||
1349 | add edi,4 |
||
1350 | loop newirqfree |
||
1351 | popa |
||
1352 | |||
1353 | |||
1354 | pusha ; remove all port reservations |
||
1355 | |||
1356 | mov edx,esi |
||
1357 | shl edx, 5 ;imul edx,0x20 |
||
1358 | add edx,0x3000 |
||
1359 | mov edx,[edx+4] |
||
1360 | |||
1361 | rmpr0: |
||
1362 | |||
1363 | mov esi,[0x2d0000] |
||
1364 | |||
1365 | cmp esi,0 |
||
1366 | je rmpr9 |
||
1367 | |||
1368 | rmpr3: |
||
1369 | |||
1370 | mov edi,esi |
||
1371 | shl edi,4 |
||
1372 | add edi,0x2d0000 |
||
1373 | |||
1374 | cmp edx,[edi] |
||
1375 | je rmpr4 |
||
1376 | |||
1377 | dec esi |
||
1378 | jnz rmpr3 |
||
1379 | |||
1380 | jmp rmpr9 |
||
1381 | |||
1382 | rmpr4: |
||
1383 | |||
1384 | mov ecx,256 |
||
1385 | sub ecx,esi |
||
1386 | shl ecx,4 |
||
1387 | |||
1388 | mov esi,edi |
||
1389 | add esi,16 |
||
1390 | cld |
||
1391 | rep movsb |
||
1392 | |||
1393 | dec dword [0x2d0000] |
||
1394 | |||
1395 | jmp rmpr0 |
||
1396 | |||
1397 | rmpr9: |
||
1398 | |||
1399 | popa |
||
1400 | mov edi,esi ; do not run this process slot |
||
1401 | shl edi, 5 ;imul edi,0x20 |
||
1402 | ; add edi,0x3000 |
||
1403 | mov [edi+0x300A],byte 9 |
||
1404 | ; call systest |
||
1405 | sti ; .. and life goes on |
||
1406 | |||
1407 | ; movzx eax,word [dlx] |
||
1408 | ; movzx ebx,word [dly] |
||
1409 | ; movzx ecx,word [dlxe] |
||
1410 | ; movzx edx,word [dlye] |
||
1411 | call calculatescreen |
||
1412 | |||
1413 | xor eax, eax |
||
1414 | xor esi, esi |
||
1415 | call redrawscreen |
||
1416 | |||
1417 | mov [0xfff4],byte 0 ; no mouse background |
||
1418 | mov [0xfff5],byte 0 ; draw mouse |
||
1419 | |||
1420 | mov [application_table_status],0 |
||
1421 | |||
1422 | mov esi,process_terminated |
||
1423 | call sys_msg_board_str |
||
1424 | |||
1425 | ;* start code - fix error redraw for terminate (2) - Mario79 |
||
1426 | ; cmp [draw_present],1 |
||
1427 | ; je no_draw_background_temp |
||
1428 | ; mov [0xfff0],byte 1 |
||
1429 | ;no_draw_background_temp: |
||
1430 | ; mov [draw_present],0 |
||
1431 | ret |
||
1432 | ;draw_present db 0 |
||
1433 | ;* end code - fix error redraw for terminate (2) - Mario79 |
||
1434 | |||
1435 | iglobal |
||
1436 | boot_sched_1 db 'Building gdt tss pointer',0 |
||
1437 | ;boot_sched_2 db 'Building gdt gate pointer',0 |
||
1438 | boot_sched_3 db 'Building interrupt table - TSS',0 |
||
1439 | boot_sched_3_2 db 'Building interrupt table - GDT',0 |
||
1440 | boot_sched_3_3 db 'Building interrupt table - IDT',0 |
||
1441 | boot_sched_4 db 'Building syscall interrupt table',0 |
||
1442 | endg |
||
1443 | |||
1444 | |||
1445 | build_scheduler: |
||
1446 | ; { Ivan 06.03.2005 |
||
1447 | mov edi, usedi40 |
||
1448 | mov ecx, 256/4 |
||
1449 | xor eax, eax |
||
1450 | rep stosd |
||
1451 | ; } Ivan 06.03.2005 |
||
1452 | |||
1453 | mov esi,boot_sched_1 |
||
1454 | call boot_log |
||
1455 | call build_process_gdt_tss_pointer |
||
1456 | |||
1457 | ; mov esi,boot_sched_2 |
||
1458 | ; call boot_log |
||
1459 | ; call build_process_gdt_gate_pointer |
||
1460 | |||
1461 | mov esi,boot_sched_3 |
||
1462 | call boot_log |
||
1463 | call build_interrupt_table |
||
1464 | |||
1465 | mov esi,boot_sched_4 |
||
1466 | call boot_log |
||
1467 | call build_syscall_interrupt_table |
||
1468 | |||
1469 | ret |
||
1470 |