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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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8858 | rgimad | 3 | ;; Copyright (C) KolibriOS team 2004-2021. All rights reserved. ;; |
6793 | pathoswith | 4 | ;; Distributed under terms of the GNU General Public License. ;; |
2288 | clevermous | 5 | ;; ;; |
6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8 | $Revision: 9709 $ |
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9 | |||
10 | align 4 ;3A08 |
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11 | build_interrupt_table: |
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12 | mov edi, idts |
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13 | mov esi, sys_int |
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14 | mov ecx, 0x40 |
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15 | mov eax, (10001110b shl 24) + os_code |
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16 | @@: |
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8050 | rgimad | 17 | movsw ; low word of code-entry |
18 | stosd ; interrupt gate type : os_code selector |
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19 | movsw ; high word of code-entry |
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2288 | clevermous | 20 | loop @b |
8050 | rgimad | 21 | movsd ; copy low dword of trap gate for int 0x40 |
22 | movsd ; copy high dword of trap gate for int 0x40 |
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7733 | dunkaist | 23 | mov ecx, 23 |
24 | mov eax, (10001110b shl 24) + os_code |
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25 | @@: |
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8050 | rgimad | 26 | movsw ; low word of code-entry |
27 | stosd ; interrupt gate type : os_code selector |
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28 | movsw ; high word of code-entry |
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7733 | dunkaist | 29 | loop @b |
2288 | clevermous | 30 | lidt [esi] |
31 | ret |
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32 | |||
33 | iglobal |
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34 | align 4 |
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35 | sys_int: |
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8050 | rgimad | 36 | ; exception handlers addresses (for interrupt gate construction) |
2288 | clevermous | 37 | dd e0,e1,e2,e3,e4,e5,e6,except_7 ; SEE: core/fpu.inc |
38 | dd e8,e9,e10,e11,e12,e13,page_fault_exc,e15 |
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39 | dd e16, e17,e18, e19 |
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40 | times 12 dd unknown_interrupt ;int_20..int_31 |
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41 | |||
8050 | rgimad | 42 | ; interrupt handlers addresses (for interrupt gate construction) |
7733 | dunkaist | 43 | ; 0x20+ are IRQ handlers |
44 | dd irq0 |
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45 | rept 12 irqn:1 \{dd irq_serv.irq_\#irqn\} |
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46 | dd irqD |
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47 | rept 18 irqn:14 \{dd irq_serv.irq_\#irqn\} |
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2288 | clevermous | 48 | |
7733 | dunkaist | 49 | ; int_0x40 gate trap (for directly copied) |
50 | dw i40 and 0xFFFF, os_code, 11101111b shl 8, i40 shr 16 |
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2288 | clevermous | 51 | |
7733 | dunkaist | 52 | rept 23 irqn:33 \{dd irq_serv.irq_\#irqn\} |
53 | |||
2288 | clevermous | 54 | idtreg: ; data for LIDT instruction (!!! must be immediately below sys_int data) |
55 | dw 2*($-sys_int-4)-1 |
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8050 | rgimad | 56 | dd idts ; 0x8000B100 |
57 | dw 0 ; alignment |
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2288 | clevermous | 58 | |
59 | msg_fault_sel dd msg_exc_8,msg_exc_u,msg_exc_a,msg_exc_b |
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6817 | dunkaist | 60 | dd msg_exc_c,msg_exc_d,msg_exc_e,msg_exc_u |
61 | dd msg_exc_u,msg_exc_11 |
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2288 | clevermous | 62 | |
63 | msg_exc_8 db "Double fault", 0 |
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64 | msg_exc_u db "Undefined Exception", 0 |
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65 | msg_exc_a db "Invalid TSS", 0 |
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66 | msg_exc_b db "Segment not present", 0 |
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67 | msg_exc_c db "Stack fault", 0 |
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68 | msg_exc_d db "General protection fault", 0 |
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69 | msg_exc_e db "Page fault", 0 |
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6817 | dunkaist | 70 | msg_exc_11 db "Alignment Check", 0 |
2288 | clevermous | 71 | |
3342 | yogev_ezra | 72 | if lang eq sp |
3344 | yogev_ezra | 73 | include 'core/sys32-sp.inc' |
3342 | yogev_ezra | 74 | else |
75 | msg_sel_ker db "kernel", 0 |
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76 | msg_sel_app db "application", 0 |
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3309 | esevece | 77 | end if |
2288 | clevermous | 78 | |
79 | endg |
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80 | |||
81 | macro save_ring3_context { |
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82 | pushad |
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83 | } |
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84 | macro restore_ring3_context { |
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85 | popad |
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86 | } |
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87 | macro exc_wo_code [num] { |
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88 | e#num : |
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89 | save_ring3_context |
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90 | mov bl, num |
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91 | jmp exc_c |
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92 | } exc_wo_code 0,1,2,3,4,5,6,15,16,19 |
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93 | |||
94 | macro exc_w_code [num] { |
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95 | e#num : |
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96 | add esp, 4 |
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97 | save_ring3_context |
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98 | mov bl, num |
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99 | jmp exc_c |
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100 | } exc_w_code 8,9,10,11,12,13,17,18 |
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101 | |||
102 | |||
103 | uglobal |
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104 | pf_err_code dd ? |
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105 | endg |
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106 | |||
8050 | rgimad | 107 | page_fault_exc: ; foolproof: selectors are clobbered ... |
108 | pop [ss:pf_err_code] ; actually, until the next #PF |
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2288 | clevermous | 109 | save_ring3_context |
110 | mov bl, 14 |
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111 | |||
8050 | rgimad | 112 | exc_c: ; exceptions (all but 7th - #NM) |
113 | ; stack frame when exception/interrupt from ring3 + pushad (i.e right here) |
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2288 | clevermous | 114 | reg_ss equ esp+0x30 |
115 | reg_esp3 equ esp+0x2C |
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116 | reg_eflags equ esp+0x28 |
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117 | reg_cs3 equ esp+0x24 |
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118 | reg_eip equ esp+0x20 |
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8050 | rgimad | 119 | ; this if frame from pushad |
2288 | clevermous | 120 | reg_eax equ esp+0x1C |
121 | reg_ecx equ esp+0x18 |
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122 | reg_edx equ esp+0x14 |
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123 | reg_ebx equ esp+0x10 |
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124 | reg_esp0 equ esp+0x0C |
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125 | reg_ebp equ esp+0x08 |
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126 | reg_esi equ esp+0x04 |
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127 | reg_edi equ esp+0x00 |
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128 | |||
8050 | rgimad | 129 | mov ax, app_data ; exception |
130 | mov ds, ax ; load proper values |
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131 | mov es, ax ; to registers |
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8051 | rgimad | 132 | cld ; clear the direction flag |
2288 | clevermous | 133 | movzx ebx, bl |
134 | ; redirect to V86 manager? (EFLAGS & 0x20000) != 0? |
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135 | test byte[reg_eflags+2], 2 |
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136 | jnz v86_exc_c |
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8050 | rgimad | 137 | cmp bl, 14 ; #PF |
2288 | clevermous | 138 | jne @f |
139 | call page_fault_handler ; SEE: core/memory.inc |
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140 | @@: |
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141 | mov esi, [current_slot] |
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142 | btr [esi+APPDATA.except_mask], ebx |
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143 | jnc @f |
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144 | mov eax, [esi+APPDATA.exc_handler] |
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145 | test eax, eax |
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146 | jnz IRetToUserHook |
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147 | @@: |
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148 | cli |
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149 | mov eax, [esi+APPDATA.debugger_slot] |
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150 | test eax, eax |
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151 | jnz .debug |
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6793 | pathoswith | 152 | ; not debuggee => say error and terminate |
9709 | Doczom | 153 | call show_error_parameters ; this function output in edx = current_slot |
2288 | clevermous | 154 | sti |
9709 | Doczom | 155 | mov [edx + APPDATA.state], TSTATE_TERMINATING |
3534 | clevermous | 156 | call wakeup_osloop |
3615 | clevermous | 157 | call change_task |
158 | ; If we're here, then the main OS thread has crashed before initializing IDLE thread. |
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159 | ; Or they both have crashed. Anyway, things are hopelessly broken. |
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160 | hlt |
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161 | jmp $-1 |
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2288 | clevermous | 162 | .debug: |
163 | ; we are debugged process, notify debugger and suspend ourself |
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164 | ; eax=debugger PID |
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165 | mov ecx, 1 ; debug_message code=other_exception |
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166 | cmp bl, 1 ; #DB |
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167 | jne .notify ; notify debugger and suspend ourself |
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168 | mov ebx, dr6 ; debug_message data=DR6_image |
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169 | xor edx, edx |
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170 | mov dr6, edx |
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171 | mov edx, dr7 |
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172 | mov cl, not 8 |
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173 | .l1: |
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174 | shl dl, 2 |
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175 | jc @f |
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176 | and bl, cl |
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177 | @@: |
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178 | sar cl, 1 |
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179 | jc .l1 |
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180 | mov cl, 3 ; debug_message code=debug_exception |
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181 | .notify: |
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182 | push ebx ; debug_message data |
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9692 | Doczom | 183 | mov ebx, [current_slot] |
184 | push [ebx + APPDATA.tid] ; PID |
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2288 | clevermous | 185 | push ecx ; debug_message code ((here: ecx==1/3)) |
186 | mov cl, 12 ; debug_message size |
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187 | call debugger_notify ;; only ONE using, inline ??? SEE: core/debug.inc |
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188 | add esp, 12 |
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9709 | Doczom | 189 | mov edx, [current_slot] |
190 | mov [edx + APPDATA.state], TSTATE_RUN_SUSPENDED |
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2288 | clevermous | 191 | call change_task ; SEE: core/shed.inc |
192 | restore_ring3_context |
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193 | iretd |
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194 | |||
195 | IRetToUserHook: |
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196 | xchg eax, [reg_eip] |
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197 | sub dword[reg_esp3], 8 |
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198 | mov edi, [reg_esp3] |
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199 | stosd |
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200 | mov [edi], ebx |
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201 | restore_ring3_context |
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202 | ; simply return control to interrupted process |
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203 | unknown_interrupt: |
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204 | iretd |
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205 | |||
206 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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207 | ; bl - error vector |
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208 | show_error_parameters: |
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209 | cmp bl, 0x06 |
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210 | jnz .no_ud |
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211 | push ebx |
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212 | mov ebx, ud_user_message |
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213 | mov ebp, notifyapp |
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214 | call fs_execute_from_sysdir_param |
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215 | pop ebx |
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216 | .no_ud: |
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9692 | Doczom | 217 | mov edx, [current_slot];not scratched below |
3309 | esevece | 218 | if lang eq sp |
9692 | Doczom | 219 | DEBUGF 1, "K : Proceso - terminado forzado PID: %x [%s]\n", [edx + APPDATA.tid], [current_slot] |
3309 | esevece | 220 | else |
9692 | Doczom | 221 | DEBUGF 1, "K : Process - forced terminate PID: %x [%s]\n", [edx + APPDATA.tid], [current_slot] |
3309 | esevece | 222 | end if |
2288 | clevermous | 223 | cmp bl, 0x08 |
224 | jb .l0 |
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6817 | dunkaist | 225 | cmp bl, 0x11 |
2288 | clevermous | 226 | jbe .l1 |
227 | .l0: |
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228 | mov bl, 0x09 |
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229 | .l1: |
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230 | mov eax, [msg_fault_sel+ebx*4 - 0x08*4] |
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231 | DEBUGF 1, "K : %s\n", eax |
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232 | mov eax, [reg_cs3+4] |
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233 | mov edi, msg_sel_app |
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234 | mov ebx, [reg_esp3+4] |
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235 | cmp eax, app_code |
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236 | je @f |
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237 | mov edi, msg_sel_ker |
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238 | mov ebx, [reg_esp0+4] |
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239 | @@: |
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240 | DEBUGF 1, "K : EAX : %x EBX : %x ECX : %x\n", [reg_eax+4], [reg_ebx+4], [reg_ecx+4] |
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241 | DEBUGF 1, "K : EDX : %x ESI : %x EDI : %x\n", [reg_edx+4], [reg_esi+4], [reg_edi+4] |
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242 | DEBUGF 1, "K : EBP : %x EIP : %x ESP : %x\n", [reg_ebp+4], [reg_eip+4], ebx |
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243 | DEBUGF 1, "K : Flags : %x CS : %x (%s)\n", [reg_eflags+4], eax, edi |
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3911 | mario79 | 244 | |
3909 | mario79 | 245 | DEBUGF 1, "K : Stack dump:\n" |
3911 | mario79 | 246 | push eax ebx ecx edx |
247 | call .check_ESP |
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248 | test eax, eax |
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249 | jnz .error_ESP |
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250 | DEBUGF 1, "K : [ESP+00]: %x",[ebx] |
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251 | add ebx, 4 |
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252 | call .check_ESP |
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253 | test eax, eax |
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254 | jnz .error_ESP |
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255 | DEBUGF 1, " [ESP+04]: %x",[ebx] |
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256 | add ebx, 4 |
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257 | call .check_ESP |
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258 | test eax, eax |
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259 | jnz .error_ESP |
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5356 | serge | 260 | DEBUGF 1, " [ESP+08]: %x\n",[ebx] |
3911 | mario79 | 261 | add ebx, 4 |
262 | call .check_ESP |
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263 | test eax, eax |
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264 | jnz .error_ESP |
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265 | DEBUGF 1, "K : [ESP+12]: %x",[ebx] |
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266 | add ebx, 4 |
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267 | call .check_ESP |
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268 | test eax, eax |
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269 | jnz .error_ESP |
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270 | DEBUGF 1, " [ESP+16]: %x",[ebx] |
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271 | add ebx, 4 |
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272 | call .check_ESP |
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273 | test eax, eax |
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274 | jnz .error_ESP |
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275 | DEBUGF 1, " [ESP+20]: %x\n",[ebx] |
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276 | add ebx, 4 |
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277 | call .check_ESP |
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278 | test eax, eax |
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279 | jnz .error_ESP |
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280 | DEBUGF 1, "K : [ESP+24]: %x",[ebx] |
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281 | add ebx, 4 |
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282 | call .check_ESP |
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283 | test eax, eax |
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284 | jnz .error_ESP |
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285 | DEBUGF 1, " [ESP+28]: %x",[ebx] |
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286 | add ebx, 4 |
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287 | call .check_ESP |
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288 | test eax, eax |
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289 | jnz .error_ESP |
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5356 | serge | 290 | DEBUGF 1, " [ESP+32]: %x\n",[ebx] |
9709 | Doczom | 291 | ;for input instruction |
292 | mov ebx, [reg_eip+4] |
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293 | call .check_ESP |
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294 | test eax, eax |
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295 | jnz .error_ESP |
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296 | DEBUGF 1, "K : [EIP]: %x",[ebx] |
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297 | add ebx, 4 |
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298 | call .check_ESP |
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299 | test eax, eax |
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300 | jnz .error_ESP |
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301 | DEBUGF 1, " [EIP+4]: %x",[ebx] |
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302 | add ebx, 4 |
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303 | call .check_ESP |
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304 | test eax, eax |
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305 | jnz .error_ESP |
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306 | DEBUGF 1, " [EIP+8]: %x\n",[ebx] |
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307 | add ebx, 4 |
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308 | call .check_ESP |
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309 | test eax, eax |
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310 | jnz .error_ESP |
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311 | DEBUGF 1, "K : [EIP+12]: %x\n",[ebx] |
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3911 | mario79 | 312 | pop edx ecx ebx eax |
2288 | clevermous | 313 | ret |
3911 | mario79 | 314 | .error_ESP: |
315 | pop edx ecx ebx eax |
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316 | DEBUGF 1, "\n" |
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317 | DEBUGF 1, "K : Unexpected end of the stack\n" |
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318 | ret |
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319 | ;-------------------------------------- |
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320 | .check_ESP: |
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321 | push ebx |
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322 | shr ebx, 12 |
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323 | mov ecx, ebx |
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324 | shr ecx, 10 |
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325 | mov edx, [master_tab+ecx*4] |
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5356 | serge | 326 | test edx, PG_READ |
8050 | rgimad | 327 | jz .fail ; page table is not created |
328 | ; incorrect address in the program |
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3911 | mario79 | 329 | |
330 | mov eax, [page_tabs+ebx*4] |
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331 | test eax, 2 |
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8050 | rgimad | 332 | jz .fail ; address not reserved for use. error |
5356 | serge | 333 | |
334 | pop ebx |
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3911 | mario79 | 335 | xor eax, eax |
5356 | serge | 336 | ret |
337 | |||
3911 | mario79 | 338 | .fail: |
339 | pop ebx |
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340 | xor eax, eax |
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341 | dec eax |
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342 | ret |
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2288 | clevermous | 343 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
344 | |||
345 | restore reg_ss |
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346 | restore reg_esp3 |
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347 | restore reg_eflags |
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348 | restore reg_cs |
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349 | restore reg_eip |
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350 | restore reg_eax |
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351 | restore reg_ecx |
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352 | restore reg_edx |
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353 | restore reg_ebx |
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354 | restore reg_esp0 |
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355 | restore reg_ebp |
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356 | restore reg_esi |
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357 | restore reg_edi |
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358 | |||
359 | |||
360 | align 4 |
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3534 | clevermous | 361 | lock_application_table: |
362 | push eax ecx edx |
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363 | mov ecx, application_table_mutex |
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364 | call mutex_lock |
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2288 | clevermous | 365 | |
8869 | rgimad | 366 | mov eax, [current_slot_idx] |
9692 | Doczom | 367 | shl eax, BSF sizeof.APPDATA |
368 | mov eax, [eax + SLOT_BASE + APPDATA.tid] |
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2288 | clevermous | 369 | |
3534 | clevermous | 370 | mov [application_table_owner], eax |
2288 | clevermous | 371 | |
3534 | clevermous | 372 | pop edx ecx eax |
2288 | clevermous | 373 | |
374 | ret |
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375 | |||
376 | align 4 |
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3534 | clevermous | 377 | unlock_application_table: |
378 | push eax ecx edx |
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2288 | clevermous | 379 | |
3534 | clevermous | 380 | mov [application_table_owner], 0 |
381 | mov ecx, application_table_mutex |
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382 | call mutex_unlock |
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2288 | clevermous | 383 | |
3534 | clevermous | 384 | pop edx ecx eax |
2288 | clevermous | 385 | |
386 | ret |
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387 | |||
8050 | rgimad | 388 | ; sysfn 64 implementation |
2288 | clevermous | 389 | align 4 |
390 | sys_resize_app_memory: |
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8050 | rgimad | 391 | ; in: eax = 64 - function number |
392 | ; ebx = 1 - number of its only subfunction |
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393 | ; ecx = new amount of memory |
||
394 | ; out: |
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395 | ; eax = 0 - success |
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396 | ; eax = 1 - out of memory |
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2288 | clevermous | 397 | |
398 | ; cmp eax,1 |
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399 | dec ebx |
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400 | jnz .no_application_mem_resize |
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4313 | mario79 | 401 | |
402 | mov eax, [pg_data.pages_free] |
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403 | shl eax, 12 |
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404 | cmp eax, ecx |
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405 | jae @f |
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406 | |||
407 | xor eax, eax |
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408 | inc eax |
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409 | jmp .store_result |
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410 | @@: |
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2288 | clevermous | 411 | stdcall new_mem_resize, ecx |
4313 | mario79 | 412 | .store_result: |
2288 | clevermous | 413 | mov [esp+32], eax |
414 | .no_application_mem_resize: |
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415 | ret |
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416 | |||
417 | iglobal |
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418 | ; process_terminating db 'K : Process - terminating',13,10,0 |
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419 | ; process_terminated db 'K : Process - done',13,10,0 |
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420 | msg_obj_destroy db 'K : destroy app object',13,10,0 |
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421 | endg |
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422 | |||
423 | ; param |
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424 | ; esi= slot |
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425 | |||
426 | align 4 |
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427 | terminate: ; terminate application |
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5130 | serge | 428 | destroy_thread: |
2288 | clevermous | 429 | |
5130 | serge | 430 | .slot equ esp+4 ;locals |
431 | .process equ esp ;ptr to parent process |
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2288 | clevermous | 432 | |
5130 | serge | 433 | |
2288 | clevermous | 434 | push esi ;save .slot |
435 | |||
9709 | Doczom | 436 | shl esi, BSF sizeof.APPDATA |
5130 | serge | 437 | mov edx, [SLOT_BASE+esi+APPDATA.process] |
438 | test edx, edx |
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439 | jnz @F |
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9709 | Doczom | 440 | mov [SLOT_BASE + esi + APPDATA.state], TSTATE_FREE |
2288 | clevermous | 441 | pop esi |
442 | ret |
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443 | @@: |
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5130 | serge | 444 | push edx ;save .process |
3534 | clevermous | 445 | lea edx, [SLOT_BASE+esi] |
446 | call scheduler_remove_thread |
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447 | call lock_application_table |
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2288 | clevermous | 448 | |
449 | ; if the process is in V86 mode... |
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450 | mov eax, [.slot] |
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9709 | Doczom | 451 | shl eax, BSF sizeof.APPDATA |
2288 | clevermous | 452 | mov esi, [eax+SLOT_BASE+APPDATA.pl0_stack] |
453 | add esi, RING0_STACK_SIZE |
||
454 | cmp [eax+SLOT_BASE+APPDATA.saved_esp0], esi |
||
455 | jz .nov86 |
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456 | ; ...it has page directory for V86 mode |
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457 | mov esi, [eax+SLOT_BASE+APPDATA.saved_esp0] |
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458 | mov ecx, [esi+4] |
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5130 | serge | 459 | mov [eax+SLOT_BASE+APPDATA.process], ecx |
2288 | clevermous | 460 | ; ...and I/O permission map for V86 mode |
461 | mov ecx, [esi+12] |
||
462 | mov [eax+SLOT_BASE+APPDATA.io_map], ecx |
||
463 | mov ecx, [esi+8] |
||
464 | mov [eax+SLOT_BASE+APPDATA.io_map+4], ecx |
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465 | .nov86: |
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8050 | rgimad | 466 | ; destroy per-thread kernel objects |
2288 | clevermous | 467 | mov esi, [.slot] |
9709 | Doczom | 468 | shl esi, BSF sizeof.APPDATA |
2288 | clevermous | 469 | add esi, SLOT_BASE+APP_OBJ_OFFSET |
470 | @@: |
||
471 | mov eax, [esi+APPOBJ.fd] |
||
472 | test eax, eax |
||
473 | jz @F |
||
474 | |||
475 | cmp eax, esi |
||
476 | je @F |
||
477 | |||
478 | push esi |
||
479 | call [eax+APPOBJ.destroy] |
||
480 | DEBUGF 1,"%s",msg_obj_destroy |
||
481 | pop esi |
||
482 | jmp @B |
||
483 | @@: |
||
484 | mov esi, [.slot] |
||
3534 | clevermous | 485 | cmp [fpu_owner], esi ; if user fpu last -> fpu user = 2 |
2288 | clevermous | 486 | jne @F |
487 | |||
3534 | clevermous | 488 | mov [fpu_owner], 2 |
8093 | dunkaist | 489 | mov eax, [sizeof.APPDATA*2+SLOT_BASE+APPDATA.fpu_state] |
2288 | clevermous | 490 | clts |
491 | bt [cpu_caps], CAPS_SSE |
||
492 | jnc .no_SSE |
||
493 | fxrstor [eax] |
||
494 | jmp @F |
||
495 | .no_SSE: |
||
496 | fnclex |
||
497 | frstor [eax] |
||
498 | @@: |
||
499 | |||
500 | mov [KEY_COUNT], byte 0 ; empty keyboard buffer |
||
501 | mov [BTN_COUNT], byte 0 ; empty button buffer |
||
502 | |||
503 | |||
504 | ; remove defined hotkeys |
||
505 | mov eax, hotkey_list |
||
506 | .loop: |
||
507 | cmp [eax+8], esi |
||
508 | jnz .cont |
||
509 | mov ecx, [eax] |
||
510 | jecxz @f |
||
511 | push dword [eax+12] |
||
512 | pop dword [ecx+12] |
||
513 | @@: |
||
514 | mov ecx, [eax+12] |
||
515 | push dword [eax] |
||
516 | pop dword [ecx] |
||
517 | xor ecx, ecx |
||
518 | mov [eax], ecx |
||
519 | mov [eax+4], ecx |
||
520 | mov [eax+8], ecx |
||
521 | mov [eax+12], ecx |
||
522 | .cont: |
||
523 | add eax, 16 |
||
524 | cmp eax, hotkey_list+256*16 |
||
525 | jb .loop |
||
2709 | mario79 | 526 | ; get process PID |
527 | mov eax, esi |
||
9692 | Doczom | 528 | shl eax, BSF sizeof.APPDATA |
529 | mov eax, [eax + SLOT_BASE + APPDATA.tid] |
||
2709 | mario79 | 530 | ; compare current lock input with process PID |
531 | cmp eax, [PID_lock_input] |
||
532 | jne @f |
||
533 | |||
534 | xor eax, eax |
||
535 | mov [PID_lock_input], eax |
||
536 | @@: |
||
2288 | clevermous | 537 | ; remove hotkeys in buffer |
538 | mov eax, hotkey_buffer |
||
539 | .loop2: |
||
540 | cmp [eax], esi |
||
541 | jnz .cont2 |
||
542 | and dword [eax+4], 0 |
||
543 | and dword [eax], 0 |
||
544 | .cont2: |
||
545 | add eax, 8 |
||
546 | cmp eax, hotkey_buffer+120*8 |
||
547 | jb .loop2 |
||
548 | |||
549 | mov ecx, esi ; remove buttons |
||
550 | bnewba2: |
||
551 | mov edi, [BTN_ADDR] |
||
552 | mov eax, edi |
||
553 | cld |
||
554 | movzx ebx, word [edi] |
||
555 | inc bx |
||
556 | bnewba: |
||
557 | dec bx |
||
558 | jz bnmba |
||
559 | add eax, 0x10 |
||
560 | cmp cx, [eax] |
||
561 | jnz bnewba |
||
562 | pusha |
||
563 | mov ecx, ebx |
||
564 | inc ecx |
||
565 | shl ecx, 4 |
||
566 | mov ebx, eax |
||
567 | add eax, 0x10 |
||
568 | call memmove |
||
569 | dec dword [edi] |
||
570 | popa |
||
571 | jmp bnewba2 |
||
572 | bnmba: |
||
573 | |||
574 | pusha ; save window coordinates for window restoring |
||
575 | cld |
||
8858 | rgimad | 576 | shl esi, BSF sizeof.WDATA |
2288 | clevermous | 577 | add esi, window_data |
578 | mov eax, [esi+WDATA.box.left] |
||
579 | mov [draw_limits.left], eax |
||
580 | add eax, [esi+WDATA.box.width] |
||
581 | mov [draw_limits.right], eax |
||
582 | mov eax, [esi+WDATA.box.top] |
||
583 | mov [draw_limits.top], eax |
||
584 | add eax, [esi+WDATA.box.height] |
||
585 | mov [draw_limits.bottom], eax |
||
586 | |||
587 | xor eax, eax |
||
8858 | rgimad | 588 | mov edi, esi |
589 | mov ecx, sizeof.WDATA/4 |
||
590 | rep stosd |
||
591 | |||
2288 | clevermous | 592 | lea edi, [esi-window_data+draw_data] |
8858 | rgimad | 593 | mov ecx, sizeof.WDATA/4 |
2288 | clevermous | 594 | rep stosd |
595 | popa |
||
596 | |||
597 | ; debuggee test |
||
598 | pushad |
||
599 | mov edi, esi |
||
9692 | Doczom | 600 | shl edi, BSF sizeof.APPDATA |
601 | mov eax, [SLOT_BASE + edi + APPDATA.debugger_slot] |
||
2288 | clevermous | 602 | test eax, eax |
603 | jz .nodebug |
||
3598 | clevermous | 604 | movi ecx, 8 |
9692 | Doczom | 605 | push dword [SLOT_BASE + edi + APPDATA.tid]; PID |
2288 | clevermous | 606 | push 2 |
607 | call debugger_notify |
||
608 | pop ecx |
||
609 | pop ecx |
||
610 | .nodebug: |
||
611 | popad |
||
612 | |||
613 | mov ebx, [.slot] |
||
9709 | Doczom | 614 | shl ebx, BSF sizeof.APPDATA |
2288 | clevermous | 615 | push ebx |
616 | mov ebx, [SLOT_BASE+ebx+APPDATA.pl0_stack] |
||
617 | |||
618 | stdcall kernel_free, ebx |
||
619 | |||
620 | pop ebx |
||
621 | mov ebx, [SLOT_BASE+ebx+APPDATA.cur_dir] |
||
622 | stdcall kernel_free, ebx |
||
623 | |||
624 | mov edi, [.slot] |
||
9709 | Doczom | 625 | shl edi, BSF sizeof.APPDATA |
2288 | clevermous | 626 | add edi, SLOT_BASE |
627 | |||
628 | mov eax, [edi+APPDATA.io_map] |
||
8093 | dunkaist | 629 | cmp eax, [SLOT_BASE+sizeof.APPDATA+APPDATA.io_map] |
2288 | clevermous | 630 | je @F |
631 | call free_page |
||
632 | @@: |
||
633 | mov eax, [edi+APPDATA.io_map+4] |
||
8093 | dunkaist | 634 | cmp eax, [SLOT_BASE+sizeof.APPDATA+APPDATA.io_map+4] |
2288 | clevermous | 635 | je @F |
636 | call free_page |
||
637 | @@: |
||
5130 | serge | 638 | lea ebx, [edi+APPDATA.list] |
639 | list_del ebx ;destroys edx, ecx |
||
640 | |||
2288 | clevermous | 641 | mov eax, 0x20202020 |
642 | stosd |
||
643 | stosd |
||
644 | stosd |
||
645 | mov ecx, 244/4 |
||
646 | xor eax, eax |
||
647 | rep stosd |
||
648 | |||
649 | ; activate window |
||
650 | movzx eax, word [WIN_STACK + esi*2] |
||
8866 | rgimad | 651 | cmp eax, [thread_count] |
2288 | clevermous | 652 | jne .dont_activate |
653 | pushad |
||
654 | .check_next_window: |
||
655 | dec eax |
||
656 | cmp eax, 1 |
||
657 | jbe .nothing_to_activate |
||
658 | lea esi, [WIN_POS+eax*2] |
||
659 | movzx edi, word [esi] ; edi = process |
||
9709 | Doczom | 660 | shl edi, BSF sizeof.APPDATA |
661 | cmp [SLOT_BASE + edi + APPDATA.state], TSTATE_FREE ; skip free slots |
||
2288 | clevermous | 662 | je .check_next_window |
9709 | Doczom | 663 | shr edi, 3 |
2288 | clevermous | 664 | add edi, window_data |
665 | ; \begin{diamond}[19.09.2006] |
||
666 | ; skip minimized windows |
||
667 | test [edi + WDATA.fl_wstate], WSTATE_MINIMIZED |
||
668 | jnz .check_next_window |
||
669 | ; \end{diamond} |
||
670 | call waredraw |
||
671 | .nothing_to_activate: |
||
672 | popad |
||
673 | .dont_activate: |
||
674 | |||
675 | push esi ; remove hd1 & cd & flp reservation |
||
9692 | Doczom | 676 | shl esi, BSF sizeof.APPDATA |
677 | mov esi, [esi + SLOT_BASE + APPDATA.tid] |
||
2288 | clevermous | 678 | cmp [cd_status], esi |
679 | jnz @f |
||
680 | call free_cd_channel |
||
681 | and [cd_status], 0 |
||
682 | @@: |
||
683 | pop esi |
||
684 | cmp [bgrlockpid], esi |
||
685 | jnz @f |
||
686 | and [bgrlockpid], 0 |
||
687 | and [bgrlock], 0 |
||
688 | @@: |
||
689 | |||
690 | pusha ; remove all port reservations |
||
691 | mov edx, esi |
||
9692 | Doczom | 692 | shl edx, BSF sizeof.APPDATA |
693 | mov edx, [edx + SLOT_BASE + APPDATA.tid] |
||
2288 | clevermous | 694 | |
695 | rmpr0: |
||
696 | |||
697 | mov esi, [RESERVED_PORTS] |
||
698 | |||
699 | test esi, esi |
||
700 | jz rmpr9 |
||
701 | |||
702 | rmpr3: |
||
703 | |||
704 | mov edi, esi |
||
705 | shl edi, 4 |
||
706 | add edi, RESERVED_PORTS |
||
707 | |||
708 | cmp edx, [edi] |
||
709 | je rmpr4 |
||
710 | |||
711 | dec esi |
||
712 | jnz rmpr3 |
||
713 | |||
714 | jmp rmpr9 |
||
715 | |||
716 | rmpr4: |
||
717 | |||
718 | mov ecx, 256 |
||
719 | sub ecx, esi |
||
720 | shl ecx, 4 |
||
721 | |||
722 | mov esi, edi |
||
723 | add esi, 16 |
||
724 | cld |
||
725 | rep movsb |
||
726 | |||
727 | dec dword [RESERVED_PORTS] |
||
728 | |||
729 | jmp rmpr0 |
||
730 | |||
731 | rmpr9: |
||
732 | |||
733 | popa |
||
734 | mov edi, esi ; do not run this process slot |
||
9709 | Doczom | 735 | shl edi, BSF sizeof.APPDATA |
736 | mov [edi + SLOT_BASE + APPDATA.state], TSTATE_FREE |
||
2288 | clevermous | 737 | ; debugger test - terminate all debuggees |
738 | mov eax, 2 |
||
9692 | Doczom | 739 | mov ecx, SLOT_BASE+2*sizeof.APPDATA + APPDATA.debugger_slot |
2288 | clevermous | 740 | .xd0: |
8866 | rgimad | 741 | cmp eax, [thread_count] |
2288 | clevermous | 742 | ja .xd1 |
743 | cmp dword [ecx], esi |
||
744 | jnz @f |
||
745 | and dword [ecx], 0 |
||
746 | pushad |
||
747 | xchg eax, ecx |
||
748 | mov ebx, 2 |
||
749 | call sys_system |
||
750 | popad |
||
751 | @@: |
||
752 | inc eax |
||
9692 | Doczom | 753 | add ecx, sizeof.APPDATA |
2288 | clevermous | 754 | jmp .xd0 |
755 | .xd1: |
||
5130 | serge | 756 | ;release slot |
757 | |||
758 | bts [thr_slot_map], esi |
||
759 | |||
760 | mov ecx, [.process] |
||
761 | lea eax, [ecx+PROC.thr_list] |
||
762 | cmp eax, [eax+LHEAD.next] |
||
763 | jne @F |
||
764 | |||
765 | call destroy_process.internal |
||
766 | @@: |
||
2288 | clevermous | 767 | sti ; .. and life goes on |
768 | |||
769 | mov eax, [draw_limits.left] |
||
770 | mov ebx, [draw_limits.top] |
||
771 | mov ecx, [draw_limits.right] |
||
772 | mov edx, [draw_limits.bottom] |
||
773 | call calculatescreen |
||
774 | xor eax, eax |
||
775 | xor esi, esi |
||
776 | call redrawscreen |
||
777 | |||
3534 | clevermous | 778 | call unlock_application_table |
2288 | clevermous | 779 | ;mov esi,process_terminated |
780 | ;call sys_msg_board_str |
||
5130 | serge | 781 | add esp, 8 |
2288 | clevermous | 782 | ret |
783 | restore .slot |
||
5130 | serge | 784 | restore .process |
2288 | clevermous | 785 | |
3296 | clevermous | 786 | ; Three following procedures are used to guarantee that |
787 | ; some part of kernel code will not be terminated from outside |
||
788 | ; while it is running. |
||
789 | ; Note: they do not protect a thread from terminating due to errors inside |
||
790 | ; the thread; accessing a nonexisting memory would still terminate it. |
||
791 | |||
792 | ; First two procedures must be used in pair by thread-to-be-protected |
||
793 | ; to signal the beginning and the end of an important part. |
||
794 | ; It is OK to have nested areas. |
||
795 | |||
796 | ; The last procedure must be used by outside wanna-be-terminators; |
||
797 | ; if it is safe to terminate the given thread immediately, it returns eax=1; |
||
798 | ; otherwise, it returns eax=0 and notifies the target thread that it should |
||
799 | ; terminate itself when leaving a critical area (the last critical area if |
||
800 | ; they are nested). |
||
801 | |||
802 | ; Implementation. Those procedures use one dword in APPDATA for the thread, |
||
803 | ; APPDATA.terminate_protection. |
||
804 | ; * The upper bit is 1 during normal operations and 0 when terminate is requested. |
||
805 | ; * Other bits form a number = depth of critical regions, |
||
806 | ; plus 1 if the upper bit is 1. |
||
807 | ; * When this dword goes to zero, the thread should be destructed, |
||
808 | ; and the procedure in which it happened becomes responsible for destruction. |
||
809 | |||
810 | ; Enter critical area. Called by thread which wants to be protected. |
||
811 | proc protect_from_terminate |
||
812 | mov edx, [current_slot] |
||
813 | ; Atomically increment depth of critical areas and get the old value. |
||
814 | mov eax, 1 |
||
815 | lock xadd [edx+APPDATA.terminate_protection], eax |
||
816 | ; If the old value was zero, somebody has started to terminate us, |
||
817 | ; so we are destructing and cannot do anything protected. |
||
818 | ; Otherwise, return to the caller. |
||
819 | test eax, eax |
||
820 | jz @f |
||
821 | ret |
||
822 | @@: |
||
823 | ; Wait for somebody to finish us. |
||
824 | call change_task |
||
825 | jmp @b |
||
826 | endp |
||
827 | |||
828 | ; Leave critical area. Called by thread which wants to be protected. |
||
829 | proc unprotect_from_terminate |
||
830 | mov edx, [current_slot] |
||
831 | ; Atomically decrement depth of critical areas. |
||
832 | lock dec [edx+APPDATA.terminate_protection] |
||
833 | ; If the result of decrement is zero, somebody has requested termination, |
||
834 | ; but at that moment we were inside a critical area; terminate now. |
||
835 | jz sys_end |
||
836 | ; Otherwise, return to the caller. |
||
837 | ret |
||
838 | endp |
||
839 | |||
8093 | dunkaist | 840 | ; Request termination of thread identified by edx = SLOT_BASE + slot*sizeof.APPDATA. |
3296 | clevermous | 841 | ; Called by anyone. |
842 | proc request_terminate |
||
843 | xor eax, eax ; set return value |
||
844 | ; Atomically clear the upper bit. If it was already zero, then |
||
845 | ; somebody has requested termination before us, so just exit. |
||
846 | lock btr [edx+APPDATA.terminate_protection], 31 |
||
847 | jnc .unsafe |
||
848 | ; Atomically decrement depth of critical areas. |
||
849 | lock dec [edx+APPDATA.terminate_protection] |
||
850 | ; If the result of decrement is nonzero, the target thread is inside a |
||
851 | ; critical area; leave termination to leaving that area. |
||
852 | jnz .unsafe |
||
853 | ; Otherwise, it is safe to kill the target now and the caller is responsible |
||
854 | ; for this. Return eax=1. |
||
855 | inc eax |
||
856 | .unsafe: |
||
857 | ret |
||
858 | endp |
||
859 |