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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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2455 | mario79 | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
2288 | clevermous | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;; ;; |
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7 | ;; MenuetOS process management, protected ring3 ;; |
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8 | ;; ;; |
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9 | ;; Distributed under GPL. See file COPYING for details. ;; |
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10 | ;; Copyright 2003 Ville Turjanmaa ;; |
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11 | ;; ;; |
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12 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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13 | |||
14 | $Revision: 4313 $ |
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15 | |||
16 | align 4 ;3A08 |
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17 | build_interrupt_table: |
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18 | mov edi, idts |
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19 | mov esi, sys_int |
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20 | mov ecx, 0x40 |
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21 | mov eax, (10001110b shl 24) + os_code |
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22 | @@: |
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23 | movsw ;low word of code-entry |
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24 | stosd ;interrupt gate type : os_code selector |
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25 | movsw ;high word of code-entry |
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26 | loop @b |
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27 | movsd ;copy low dword of trap gate for int 0x40 |
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28 | movsd ;copy high dword of trap gate for int 0x40 |
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29 | lidt [esi] |
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30 | ret |
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31 | |||
32 | iglobal |
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33 | align 4 |
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34 | sys_int: |
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35 | ;exception handlers addresses (for interrupt gate construction) |
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36 | dd e0,e1,e2,e3,e4,e5,e6,except_7 ; SEE: core/fpu.inc |
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37 | dd e8,e9,e10,e11,e12,e13,page_fault_exc,e15 |
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38 | dd e16, e17,e18, e19 |
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39 | times 12 dd unknown_interrupt ;int_20..int_31 |
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40 | |||
41 | ;interrupt handlers addresses (for interrupt gate construction) |
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42 | ; 0x20 .. 0x2F - IRQ handlers |
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43 | dd irq0, irq_serv.irq_1, irq_serv.irq_2 |
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44 | dd irq_serv.irq_3, irq_serv.irq_4 |
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45 | dd irq_serv.irq_5, irq_serv.irq_6, irq_serv.irq_7 |
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46 | dd irq_serv.irq_8, irq_serv.irq_9, irq_serv.irq_10 |
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47 | dd irq_serv.irq_11, irq_serv.irq_12, irqD, irq_serv.irq_14, irq_serv.irq_15 |
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48 | dd irq_serv.irq_16 |
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49 | dd irq_serv.irq_17 |
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50 | dd irq_serv.irq_18 |
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51 | dd irq_serv.irq_19 |
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52 | dd irq_serv.irq_20 |
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53 | dd irq_serv.irq_21 |
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54 | dd irq_serv.irq_22 |
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55 | dd irq_serv.irq_23 |
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56 | |||
57 | times 32 - IRQ_RESERVED dd unknown_interrupt |
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58 | ;int_0x40 gate trap (for directly copied) |
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59 | dw i40 and 0xFFFF, os_code, 11101111b shl 8, i40 shr 16 |
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60 | |||
61 | idtreg: ; data for LIDT instruction (!!! must be immediately below sys_int data) |
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62 | dw 2*($-sys_int-4)-1 |
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63 | dd idts ;0x8000B100 |
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3539 | clevermous | 64 | dw 0 ;просто выравнивание |
2288 | clevermous | 65 | |
66 | msg_fault_sel dd msg_exc_8,msg_exc_u,msg_exc_a,msg_exc_b |
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67 | dd msg_exc_c,msg_exc_d,msg_exc_e |
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68 | |||
69 | msg_exc_8 db "Double fault", 0 |
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70 | msg_exc_u db "Undefined Exception", 0 |
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71 | msg_exc_a db "Invalid TSS", 0 |
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72 | msg_exc_b db "Segment not present", 0 |
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73 | msg_exc_c db "Stack fault", 0 |
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74 | msg_exc_d db "General protection fault", 0 |
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75 | msg_exc_e db "Page fault", 0 |
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76 | |||
3342 | yogev_ezra | 77 | if lang eq sp |
3344 | yogev_ezra | 78 | include 'core/sys32-sp.inc' |
3342 | yogev_ezra | 79 | else |
80 | msg_sel_ker db "kernel", 0 |
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81 | msg_sel_app db "application", 0 |
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3309 | esevece | 82 | end if |
2288 | clevermous | 83 | |
84 | endg |
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85 | |||
86 | macro save_ring3_context { |
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87 | pushad |
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88 | } |
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89 | macro restore_ring3_context { |
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90 | popad |
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91 | } |
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92 | macro exc_wo_code [num] { |
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93 | e#num : |
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94 | save_ring3_context |
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95 | mov bl, num |
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96 | jmp exc_c |
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97 | } exc_wo_code 0,1,2,3,4,5,6,15,16,19 |
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98 | |||
99 | macro exc_w_code [num] { |
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100 | e#num : |
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101 | add esp, 4 |
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102 | save_ring3_context |
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103 | mov bl, num |
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104 | jmp exc_c |
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105 | } exc_w_code 8,9,10,11,12,13,17,18 |
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106 | |||
107 | |||
108 | uglobal |
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109 | pf_err_code dd ? |
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110 | endg |
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111 | |||
3539 | clevermous | 112 | page_fault_exc: ; дуракоусточивость: селекторы испорчены... |
113 | pop [ss:pf_err_code]; действительно до следующего #PF |
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2288 | clevermous | 114 | save_ring3_context |
115 | mov bl, 14 |
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116 | |||
3539 | clevermous | 117 | exc_c: ; исключения (все, кроме 7-го - #NM) |
118 | ; Фрэйм стека при исключении/прерывании из 3-го кольца + pushad (т.е., именно здесь) |
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2288 | clevermous | 119 | reg_ss equ esp+0x30 |
120 | reg_esp3 equ esp+0x2C |
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121 | reg_eflags equ esp+0x28 |
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122 | reg_cs3 equ esp+0x24 |
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123 | reg_eip equ esp+0x20 |
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3539 | clevermous | 124 | ; это фрэйм от pushad |
2288 | clevermous | 125 | reg_eax equ esp+0x1C |
126 | reg_ecx equ esp+0x18 |
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127 | reg_edx equ esp+0x14 |
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128 | reg_ebx equ esp+0x10 |
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129 | reg_esp0 equ esp+0x0C |
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130 | reg_ebp equ esp+0x08 |
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131 | reg_esi equ esp+0x04 |
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132 | reg_edi equ esp+0x00 |
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133 | |||
3539 | clevermous | 134 | mov ax, app_data ;исключение |
135 | mov ds, ax ;загрузим правильные значения |
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136 | mov es, ax ;в регистры |
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137 | cld ; и приводим DF к стандарту |
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2288 | clevermous | 138 | movzx ebx, bl |
139 | ; redirect to V86 manager? (EFLAGS & 0x20000) != 0? |
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140 | test byte[reg_eflags+2], 2 |
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141 | jnz v86_exc_c |
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142 | cmp bl, 14 ; #PF |
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143 | jne @f |
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144 | call page_fault_handler ; SEE: core/memory.inc |
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145 | @@: |
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146 | mov esi, [current_slot] |
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147 | btr [esi+APPDATA.except_mask], ebx |
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148 | jnc @f |
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149 | mov eax, [esi+APPDATA.exc_handler] |
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150 | test eax, eax |
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151 | jnz IRetToUserHook |
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152 | @@: |
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153 | cli |
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154 | mov eax, [esi+APPDATA.debugger_slot] |
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155 | test eax, eax |
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156 | jnz .debug |
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157 | sti |
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158 | ; not debuggee => say error and terminate |
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159 | call show_error_parameters ;; only ONE using, inline ??? |
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160 | ;mov edx, [TASK_BASE] |
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161 | mov [edx + TASKDATA.state], byte 4 ; terminate |
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3534 | clevermous | 162 | call wakeup_osloop |
3615 | clevermous | 163 | call change_task |
164 | ; If we're here, then the main OS thread has crashed before initializing IDLE thread. |
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165 | ; Or they both have crashed. Anyway, things are hopelessly broken. |
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166 | hlt |
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167 | jmp $-1 |
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2288 | clevermous | 168 | .debug: |
169 | ; we are debugged process, notify debugger and suspend ourself |
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170 | ; eax=debugger PID |
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171 | mov ecx, 1 ; debug_message code=other_exception |
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172 | cmp bl, 1 ; #DB |
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173 | jne .notify ; notify debugger and suspend ourself |
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174 | mov ebx, dr6 ; debug_message data=DR6_image |
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175 | xor edx, edx |
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176 | mov dr6, edx |
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177 | mov edx, dr7 |
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178 | mov cl, not 8 |
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179 | .l1: |
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180 | shl dl, 2 |
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181 | jc @f |
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182 | and bl, cl |
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183 | @@: |
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184 | sar cl, 1 |
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185 | jc .l1 |
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186 | mov cl, 3 ; debug_message code=debug_exception |
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187 | .notify: |
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188 | push ebx ; debug_message data |
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189 | mov ebx, [TASK_BASE] |
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190 | push [ebx+TASKDATA.pid] ; PID |
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191 | push ecx ; debug_message code ((here: ecx==1/3)) |
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192 | mov cl, 12 ; debug_message size |
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193 | call debugger_notify ;; only ONE using, inline ??? SEE: core/debug.inc |
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194 | add esp, 12 |
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195 | mov edx, [TASK_BASE] |
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196 | mov byte [edx+TASKDATA.state], 1 ; suspended |
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197 | call change_task ; SEE: core/shed.inc |
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198 | restore_ring3_context |
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199 | iretd |
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200 | |||
201 | IRetToUserHook: |
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202 | xchg eax, [reg_eip] |
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203 | sub dword[reg_esp3], 8 |
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204 | mov edi, [reg_esp3] |
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205 | stosd |
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206 | mov [edi], ebx |
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207 | restore_ring3_context |
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208 | ; simply return control to interrupted process |
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209 | unknown_interrupt: |
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210 | iretd |
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211 | |||
212 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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213 | ; bl - error vector |
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214 | show_error_parameters: |
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215 | cmp bl, 0x06 |
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216 | jnz .no_ud |
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217 | push ebx |
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218 | mov ebx, ud_user_message |
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219 | mov ebp, notifyapp |
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220 | call fs_execute_from_sysdir_param |
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221 | pop ebx |
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222 | .no_ud: |
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223 | mov edx, [TASK_BASE];not scratched below |
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3309 | esevece | 224 | if lang eq sp |
225 | DEBUGF 1, "K : Proceso - terminado forzado PID: %x [%s]\n", [edx+TASKDATA.pid], [current_slot] |
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226 | else |
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3294 | clevermous | 227 | DEBUGF 1, "K : Process - forced terminate PID: %x [%s]\n", [edx+TASKDATA.pid], [current_slot] |
3309 | esevece | 228 | end if |
2288 | clevermous | 229 | cmp bl, 0x08 |
230 | jb .l0 |
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231 | cmp bl, 0x0e |
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232 | jbe .l1 |
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233 | .l0: |
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234 | mov bl, 0x09 |
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235 | .l1: |
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236 | mov eax, [msg_fault_sel+ebx*4 - 0x08*4] |
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237 | DEBUGF 1, "K : %s\n", eax |
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238 | mov eax, [reg_cs3+4] |
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239 | mov edi, msg_sel_app |
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240 | mov ebx, [reg_esp3+4] |
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241 | cmp eax, app_code |
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242 | je @f |
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243 | mov edi, msg_sel_ker |
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