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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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9715 | Doczom | 3 | ;; Copyright (C) KolibriOS team 2004-2022. 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: 9975 $ |
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9 | |||
9975 | Jurgen | 10 | struct EXCEPT_STACK |
11 | RegEIP dd ? |
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12 | ExcCode dd ? ; only exception 12 overflow stack |
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13 | OldESP dd ? |
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14 | RegCR2 dd ? |
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15 | LockAccess dd ? |
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16 | ends |
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17 | |||
2288 | clevermous | 18 | align 4 ;3A08 |
19 | build_interrupt_table: |
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20 | mov edi, idts |
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21 | mov esi, sys_int |
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22 | mov ecx, 0x40 |
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23 | mov eax, (10001110b shl 24) + os_code |
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24 | @@: |
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8050 | rgimad | 25 | movsw ; low word of code-entry |
26 | stosd ; interrupt gate type : os_code selector |
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27 | movsw ; high word of code-entry |
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2288 | clevermous | 28 | loop @b |
8050 | rgimad | 29 | movsd ; copy low dword of trap gate for int 0x40 |
30 | movsd ; copy high dword of trap gate for int 0x40 |
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7733 | dunkaist | 31 | mov ecx, 23 |
32 | mov eax, (10001110b shl 24) + os_code |
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33 | @@: |
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8050 | rgimad | 34 | movsw ; low word of code-entry |
35 | stosd ; interrupt gate type : os_code selector |
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36 | movsw ; high word of code-entry |
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7733 | dunkaist | 37 | loop @b |
2288 | clevermous | 38 | lidt [esi] |
39 | ret |
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40 | |||
41 | iglobal |
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42 | align 4 |
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43 | sys_int: |
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8050 | rgimad | 44 | ; exception handlers addresses (for interrupt gate construction) |
2288 | clevermous | 45 | dd e0,e1,e2,e3,e4,e5,e6,except_7 ; SEE: core/fpu.inc |
46 | dd e8,e9,e10,e11,e12,e13,page_fault_exc,e15 |
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47 | dd e16, e17,e18, e19 |
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48 | times 12 dd unknown_interrupt ;int_20..int_31 |
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49 | |||
8050 | rgimad | 50 | ; interrupt handlers addresses (for interrupt gate construction) |
7733 | dunkaist | 51 | ; 0x20+ are IRQ handlers |
52 | dd irq0 |
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53 | rept 12 irqn:1 \{dd irq_serv.irq_\#irqn\} |
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54 | dd irqD |
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55 | rept 18 irqn:14 \{dd irq_serv.irq_\#irqn\} |
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2288 | clevermous | 56 | |
7733 | dunkaist | 57 | ; int_0x40 gate trap (for directly copied) |
58 | dw i40 and 0xFFFF, os_code, 11101111b shl 8, i40 shr 16 |
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2288 | clevermous | 59 | |
7733 | dunkaist | 60 | rept 23 irqn:33 \{dd irq_serv.irq_\#irqn\} |
61 | |||
2288 | clevermous | 62 | idtreg: ; data for LIDT instruction (!!! must be immediately below sys_int data) |
63 | dw 2*($-sys_int-4)-1 |
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8050 | rgimad | 64 | dd idts ; 0x8000B100 |
65 | dw 0 ; alignment |
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2288 | clevermous | 66 | |
67 | msg_fault_sel dd msg_exc_8,msg_exc_u,msg_exc_a,msg_exc_b |
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6817 | dunkaist | 68 | dd msg_exc_c,msg_exc_d,msg_exc_e,msg_exc_u |
69 | dd msg_exc_u,msg_exc_11 |
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2288 | clevermous | 70 | |
71 | msg_exc_8 db "Double fault", 0 |
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72 | msg_exc_u db "Undefined Exception", 0 |
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73 | msg_exc_a db "Invalid TSS", 0 |
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74 | msg_exc_b db "Segment not present", 0 |
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75 | msg_exc_c db "Stack fault", 0 |
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76 | msg_exc_d db "General protection fault", 0 |
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77 | msg_exc_e db "Page fault", 0 |
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6817 | dunkaist | 78 | msg_exc_11 db "Alignment Check", 0 |
2288 | clevermous | 79 | |
3342 | yogev_ezra | 80 | if lang eq sp |
3344 | yogev_ezra | 81 | include 'core/sys32-sp.inc' |
3342 | yogev_ezra | 82 | else |
83 | msg_sel_ker db "kernel", 0 |
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84 | msg_sel_app db "application", 0 |
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3309 | esevece | 85 | end if |
2288 | clevermous | 86 | |
87 | endg |
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88 | |||
89 | macro save_ring3_context { |
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90 | pushad |
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91 | } |
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92 | macro restore_ring3_context { |
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93 | popad |
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94 | } |
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95 | macro exc_wo_code [num] { |
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96 | e#num : |
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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_wo_code 0,1,2,3,4,5,6,15,16,19 |
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101 | |||
102 | macro exc_w_code [num] { |
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103 | e#num : |
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104 | add esp, 4 |
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105 | save_ring3_context |
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106 | mov bl, num |
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107 | jmp exc_c |
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108 | } exc_w_code 8,9,10,11,12,13,17,18 |
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109 | |||
110 | |||
111 | uglobal |
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112 | pf_err_code dd ? |
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113 | endg |
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114 | |||
8050 | rgimad | 115 | page_fault_exc: ; foolproof: selectors are clobbered ... |
116 | pop [ss:pf_err_code] ; actually, until the next #PF |
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2288 | clevermous | 117 | save_ring3_context |
118 | mov bl, 14 |
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119 | |||
8050 | rgimad | 120 | exc_c: ; exceptions (all but 7th - #NM) |
121 | ; stack frame when exception/interrupt from ring3 + pushad (i.e right here) |
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2288 | clevermous | 122 | reg_ss equ esp+0x30 |
123 | reg_esp3 equ esp+0x2C |
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124 | reg_eflags equ esp+0x28 |
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125 | reg_cs3 equ esp+0x24 |
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126 | reg_eip equ esp+0x20 |
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8050 | rgimad | 127 | ; this if frame from pushad |
2288 | clevermous | 128 | reg_eax equ esp+0x1C |
129 | reg_ecx equ esp+0x18 |
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130 | reg_edx equ esp+0x14 |
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131 | reg_ebx equ esp+0x10 |
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132 | reg_esp0 equ esp+0x0C |
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133 | reg_ebp equ esp+0x08 |
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134 | reg_esi equ esp+0x04 |
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135 | reg_edi equ esp+0x00 |
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136 | |||
8050 | rgimad | 137 | mov ax, app_data ; exception |
138 | mov ds, ax ; load proper values |
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139 | mov es, ax ; to registers |
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8051 | rgimad | 140 | cld ; clear the direction flag |
2288 | clevermous | 141 | movzx ebx, bl |
142 | ; redirect to V86 manager? (EFLAGS & 0x20000) != 0? |
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143 | test byte[reg_eflags+2], 2 |
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144 | jnz v86_exc_c |
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8050 | rgimad | 145 | cmp bl, 14 ; #PF |
2288 | clevermous | 146 | jne @f |
147 | call page_fault_handler ; SEE: core/memory.inc |
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148 | @@: |
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149 | mov esi, [current_slot] |
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9715 | Doczom | 150 | btr [esi + APPDATA.except_mask], ebx |
2288 | clevermous | 151 | jnc @f |
9715 | Doczom | 152 | mov eax, [esi + APPDATA.exc_handler] |
2288 | clevermous | 153 | test eax, eax |
154 | jnz IRetToUserHook |
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155 | @@: |
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156 | cli |
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9715 | Doczom | 157 | mov eax, [esi + APPDATA.debugger_slot] |
2288 | clevermous | 158 | test eax, eax |
159 | jnz .debug |
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6793 | pathoswith | 160 | ; not debuggee => say error and terminate |
9709 | Doczom | 161 | call show_error_parameters ; this function output in edx = current_slot |
2288 | clevermous | 162 | sti |
9709 | Doczom | 163 | mov [edx + APPDATA.state], TSTATE_TERMINATING |
3534 | clevermous | 164 | call wakeup_osloop |
3615 | clevermous | 165 | call change_task |
166 | ; If we're here, then the main OS thread has crashed before initializing IDLE thread. |
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167 | ; Or they both have crashed. Anyway, things are hopelessly broken. |
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168 | hlt |
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169 | jmp $-1 |
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2288 | clevermous | 170 | .debug: |
171 | ; we are debugged process, notify debugger and suspend ourself |
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172 | ; eax=debugger PID |
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173 | mov ecx, 1 ; debug_message code=other_exception |
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174 | cmp bl, 1 ; #DB |
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175 | jne .notify ; notify debugger and suspend ourself |
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176 | mov ebx, dr6 ; debug_message data=DR6_image |
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177 | xor edx, edx |
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178 | mov dr6, edx |
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179 | mov edx, dr7 |
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180 | mov cl, not 8 |
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181 | .l1: |
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182 | shl dl, 2 |
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183 | jc @f |
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184 | and bl, cl |
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185 | @@: |
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186 | sar cl, 1 |
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187 | jc .l1 |
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188 | mov cl, 3 ; debug_message code=debug_exception |
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189 | .notify: |
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190 | push ebx ; debug_message data |
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9692 | Doczom | 191 | mov ebx, [current_slot] |
192 | push [ebx + APPDATA.tid] ; PID |
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2288 | clevermous | 193 | push ecx ; debug_message code ((here: ecx==1/3)) |
194 | mov cl, 12 ; debug_message size |
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195 | call debugger_notify ;; only ONE using, inline ??? SEE: core/debug.inc |
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196 | add esp, 12 |
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9709 | Doczom | 197 | mov edx, [current_slot] |
198 | mov [edx + APPDATA.state], TSTATE_RUN_SUSPENDED |
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2288 | clevermous | 199 | call change_task ; SEE: core/shed.inc |
200 | restore_ring3_context |
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201 | iretd |
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202 | |||
203 | IRetToUserHook: |
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204 | xchg eax, [reg_eip] |
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205 | sub dword[reg_esp3], 8 |
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206 | mov edi, [reg_esp3] |
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207 | stosd |
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208 | mov [edi], ebx |
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209 | restore_ring3_context |
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210 | ; simply return control to interrupted process |
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211 | unknown_interrupt: |
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212 | iretd |
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213 | |||
214 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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215 | ; bl - error vector |
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216 | show_error_parameters: |
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217 | cmp bl, 0x06 |
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218 | jnz .no_ud |
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219 | push ebx |
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220 | mov ebx, ud_user_message |
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221 | mov ebp, notifyapp |
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222 | call fs_execute_from_sysdir_param |
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223 | pop ebx |
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224 | .no_ud: |
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9692 | Doczom | 225 | mov edx, [current_slot];not scratched below |
3309 | esevece | 226 | if lang eq sp |
9692 | Doczom | 227 | DEBUGF 1, "K : Proceso - terminado forzado PID: %x [%s]\n", [edx + APPDATA.tid], [current_slot] |
3309 | esevece | 228 | else |
9692 | Doczom | 229 | DEBUGF 1, "K : Process - forced terminate PID: %x [%s]\n", [edx + APPDATA.tid], [current_slot] |
3309 | esevece | 230 | end if |
2288 | clevermous | 231 | cmp bl, 0x08 |
232 | jb .l0 |
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6817 | dunkaist | 233 | cmp bl, 0x11 |
2288 | clevermous | 234 | jbe .l1 |
235 | .l0: |
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236 | mov bl, 0x09 |
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237 | .l1: |
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238 | mov eax, [msg_fault_sel+ebx*4 - 0x08*4] |
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239 | DEBUGF 1, "K : %s\n", eax |
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240 | mov eax, [reg_cs3+4] |
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241 | mov edi, msg_sel_app |
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242 | mov ebx, [reg_esp3+4] |
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243 | cmp eax, app_code |
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244 | je @f |
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245 | mov edi, msg_sel_ker |
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246 | mov ebx, [reg_esp0+4] |
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247 | @@: |
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248 | DEBUGF 1, "K : EAX : %x EBX : %x ECX : %x\n", [reg_eax+4], [reg_ebx+4], [reg_ecx+4] |
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249 | DEBUGF 1, "K : EDX : %x ESI : %x EDI : %x\n", [reg_edx+4], [reg_esi+4], [reg_edi+4] |
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250 | DEBUGF 1, "K : EBP : %x EIP : %x ESP : %x\n", [reg_ebp+4], [reg_eip+4], ebx |
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251 | DEBUGF 1, "K : Flags : %x CS : %x (%s)\n", [reg_eflags+4], eax, edi |
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3911 | mario79 | 252 | |
3909 | mario79 | 253 | DEBUGF 1, "K : Stack dump:\n" |
3911 | mario79 | 254 | push eax ebx ecx edx |
255 | call .check_ESP |
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256 | test eax, eax |
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257 | jnz .error_ESP |
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258 | DEBUGF 1, "K : [ESP+00]: %x",[ebx] |
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259 | add ebx, 4 |
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260 | call .check_ESP |
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261 | test eax, eax |
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262 | jnz .error_ESP |
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263 | DEBUGF 1, " [ESP+04]: %x",[ebx] |
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264 | add ebx, 4 |
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265 | call .check_ESP |
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266 | test eax, eax |
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267 | jnz .error_ESP |
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5356 | serge | 268 | DEBUGF 1, " [ESP+08]: %x\n",[ebx] |
3911 | mario79 | 269 | add ebx, 4 |
270 | call .check_ESP |
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271 | test eax, eax |
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272 | jnz .error_ESP |
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273 | DEBUGF 1, "K : [ESP+12]: %x",[ebx] |
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274 | add ebx, 4 |
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275 | call .check_ESP |
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276 | test eax, eax |
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277 | jnz .error_ESP |
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278 | DEBUGF 1, " [ESP+16]: %x",[ebx] |
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279 | add ebx, 4 |
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280 | call .check_ESP |
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281 | test eax, eax |
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282 | jnz .error_ESP |
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283 | DEBUGF 1, " [ESP+20]: %x\n",[ebx] |
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284 | add ebx, 4 |
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285 | call .check_ESP |
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286 | test eax, eax |
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287 | jnz .error_ESP |
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288 | DEBUGF 1, "K : [ESP+24]: %x",[ebx] |
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289 | add ebx, 4 |
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290 | call .check_ESP |
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291 | test eax, eax |
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292 | jnz .error_ESP |
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293 | DEBUGF 1, " [ESP+28]: %x",[ebx] |
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294 | add ebx, 4 |
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295 | call .check_ESP |
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296 | test eax, eax |
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297 | jnz .error_ESP |
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5356 | serge | 298 | DEBUGF 1, " [ESP+32]: %x\n",[ebx] |
3911 | mario79 | 299 | pop edx ecx ebx eax |
2288 | clevermous | 300 | ret |
3911 | mario79 | 301 | .error_ESP: |
302 | pop edx ecx ebx eax |
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303 | DEBUGF 1, "\n" |
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304 | DEBUGF 1, "K : Unexpected end of the stack\n" |
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305 | ret |
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306 | ;-------------------------------------- |
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307 | .check_ESP: |
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308 | push ebx |
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309 | shr ebx, 12 |
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310 | mov ecx, ebx |
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311 | shr ecx, 10 |
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9715 | Doczom | 312 | mov edx, [master_tab + ecx*4] |
5356 | serge | 313 | test edx, PG_READ |
8050 | rgimad | 314 | jz .fail ; page table is not created |
315 | ; incorrect address in the program |
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3911 | mario79 | 316 | |
9715 | Doczom | 317 | mov eax, [page_tabs + ebx*4] |
3911 | mario79 | 318 | test eax, 2 |
8050 | rgimad | 319 | jz .fail ; address not reserved for use. error |
5356 | serge | 320 | |
321 | pop ebx |
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3911 | mario79 | 322 | xor eax, eax |
5356 | serge | 323 | ret |
324 | |||
3911 | mario79 | 325 | .fail: |
326 | pop ebx |
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327 | xor eax, eax |
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328 | dec eax |
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329 | ret |
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2288 | clevermous | 330 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
331 | |||
332 | restore reg_ss |
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333 | restore reg_esp3 |
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334 | restore reg_eflags |
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335 | restore reg_cs |
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336 | restore reg_eip |
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337 | restore reg_eax |
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338 | restore reg_ecx |
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339 | restore reg_edx |
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340 | restore reg_ebx |
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341 | restore reg_esp0 |
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342 | restore reg_ebp |
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343 | restore reg_esi |
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344 | restore reg_edi |
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345 | |||
346 | |||
347 | align 4 |
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3534 | clevermous | 348 | lock_application_table: |
349 | push eax ecx edx |
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350 | mov ecx, application_table_mutex |
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351 | call mutex_lock |
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2288 | clevermous | 352 | |
9828 | Doczom | 353 | mov eax, [current_slot] |
354 | mov eax, [eax + APPDATA.tid] |
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2288 | clevermous | 355 | |
3534 | clevermous | 356 | mov [application_table_owner], eax |
2288 | clevermous | 357 | |
3534 | clevermous | 358 | pop edx ecx eax |
2288 | clevermous | 359 | |
360 | ret |
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361 | |||
362 | align 4 |
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3534 | clevermous | 363 | unlock_application_table: |
364 | push eax ecx edx |
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2288 | clevermous | 365 | |
3534 | clevermous | 366 | mov [application_table_owner], 0 |
367 | mov ecx, application_table_mutex |
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368 | call mutex_unlock |
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2288 | clevermous | 369 | |
3534 | clevermous | 370 | pop edx ecx eax |
2288 | clevermous | 371 | |
372 | ret |
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373 | |||
8050 | rgimad | 374 | ; sysfn 64 implementation |
2288 | clevermous | 375 | align 4 |
376 | sys_resize_app_memory: |
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8050 | rgimad | 377 | ; in: eax = 64 - function number |
378 | ; ebx = 1 - number of its only subfunction |
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379 | ; ecx = new amount of memory |
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380 | ; out: |
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381 | ; eax = 0 - success |
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382 | ; eax = 1 - out of memory |
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2288 | clevermous | 383 | |
384 | ; cmp eax,1 |
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385 | dec ebx |
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386 | jnz .no_application_mem_resize |
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4313 | mario79 | 387 | |
388 | mov eax, [pg_data.pages_free] |
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389 | shl eax, 12 |
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390 | cmp eax, ecx |
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391 | jae @f |
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392 | |||
393 | xor eax, eax |
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394 | inc eax |
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395 | jmp .store_result |
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396 | @@: |
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2288 | clevermous | 397 | stdcall new_mem_resize, ecx |
4313 | mario79 | 398 | .store_result: |
9831 | dunkaist | 399 | mov [esp + SYSCALL_STACK.eax], eax |
2288 | clevermous | 400 | .no_application_mem_resize: |
401 | ret |
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402 | |||
403 | iglobal |
||
404 | ; process_terminating db 'K : Process - terminating',13,10,0 |
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405 | ; process_terminated db 'K : Process - done',13,10,0 |
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406 | msg_obj_destroy db 'K : destroy app object',13,10,0 |
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407 | endg |
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408 | |||
409 | ; param |
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410 | ; esi= slot |
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411 | |||
412 | align 4 |
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413 | terminate: ; terminate application |
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5130 | serge | 414 | destroy_thread: |
2288 | clevermous | 415 | |
5130 | serge | 416 | .slot equ esp+4 ;locals |
417 | .process equ esp ;ptr to parent process |
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2288 | clevermous | 418 | |
5130 | serge | 419 | |
2288 | clevermous | 420 | push esi ;save .slot |
421 | |||
9709 | Doczom | 422 | shl esi, BSF sizeof.APPDATA |
9715 | Doczom | 423 | mov edx, [SLOT_BASE + esi + APPDATA.process] |
5130 | serge | 424 | test edx, edx |
425 | jnz @F |
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9709 | Doczom | 426 | mov [SLOT_BASE + esi + APPDATA.state], TSTATE_FREE |
2288 | clevermous | 427 | pop esi |
428 | ret |
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429 | @@: |
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5130 | serge | 430 | push edx ;save .process |
9715 | Doczom | 431 | lea edx, [SLOT_BASE + esi] |
3534 | clevermous | 432 | call scheduler_remove_thread |
433 | call lock_application_table |
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2288 | clevermous | 434 | |
435 | ; if the process is in V86 mode... |
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436 | mov eax, [.slot] |
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9709 | Doczom | 437 | shl eax, BSF sizeof.APPDATA |
9715 | Doczom | 438 | mov esi, [SLOT_BASE + eax + APPDATA.pl0_stack] |
2288 | clevermous | 439 | add esi, RING0_STACK_SIZE |
9715 | Doczom | 440 | cmp [SLOT_BASE + eax + APPDATA.saved_esp0], esi |
2288 | clevermous | 441 | jz .nov86 |
442 | ; ...it has page directory for V86 mode |
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9715 | Doczom | 443 | mov esi, [SLOT_BASE + eax + APPDATA.saved_esp0] |
2288 | clevermous | 444 | mov ecx, [esi+4] |
9715 | Doczom | 445 | mov [SLOT_BASE + eax + APPDATA.process], ecx |
2288 | clevermous | 446 | ; ...and I/O permission map for V86 mode |
447 | mov ecx, [esi+12] |
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9715 | Doczom | 448 | mov [SLOT_BASE + eax + APPDATA.io_map], ecx |
2288 | clevermous | 449 | mov ecx, [esi+8] |
9715 | Doczom | 450 | mov [SLOT_BASE + eax + APPDATA.io_map+4], ecx |
2288 | clevermous | 451 | .nov86: |
8050 | rgimad | 452 | ; destroy per-thread kernel objects |
2288 | clevermous | 453 | mov esi, [.slot] |
9709 | Doczom | 454 | shl esi, BSF sizeof.APPDATA |
9715 | Doczom | 455 | add esi, SLOT_BASE + APP_OBJ_OFFSET |
2288 | clevermous | 456 | @@: |
9715 | Doczom | 457 | mov eax, [esi + APPOBJ.fd] |
2288 | clevermous | 458 | test eax, eax |
459 | jz @F |
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460 | |||
461 | cmp eax, esi |
||
462 | je @F |
||
463 | |||
464 | push esi |
||
9715 | Doczom | 465 | call [eax + APPOBJ.destroy] |
2288 | clevermous | 466 | DEBUGF 1,"%s",msg_obj_destroy |
467 | pop esi |
||
468 | jmp @B |
||
469 | @@: |
||
470 | mov esi, [.slot] |
||
3534 | clevermous | 471 | cmp [fpu_owner], esi ; if user fpu last -> fpu user = 2 |
2288 | clevermous | 472 | jne @F |
473 | |||
3534 | clevermous | 474 | mov [fpu_owner], 2 |
9715 | Doczom | 475 | mov eax, [SLOT_BASE + sizeof.APPDATA*2 + APPDATA.fpu_state] |
2288 | clevermous | 476 | clts |
477 | bt [cpu_caps], CAPS_SSE |
||
478 | jnc .no_SSE |
||
479 | fxrstor [eax] |
||
480 | jmp @F |
||
481 | .no_SSE: |
||
482 | fnclex |
||
483 | frstor [eax] |
||
484 | @@: |
||
485 | |||
486 | mov [KEY_COUNT], byte 0 ; empty keyboard buffer |
||
487 | mov [BTN_COUNT], byte 0 ; empty button buffer |
||
488 | |||
489 | |||
490 | ; remove defined hotkeys |
||
491 | mov eax, hotkey_list |
||
492 | .loop: |
||
493 | cmp [eax+8], esi |
||
494 | jnz .cont |
||
495 | mov ecx, [eax] |
||
496 | jecxz @f |
||
497 | push dword [eax+12] |
||
498 | pop dword [ecx+12] |
||
499 | @@: |
||
500 | mov ecx, [eax+12] |
||
501 | push dword [eax] |
||
502 | pop dword [ecx] |
||
503 | xor ecx, ecx |
||
504 | mov [eax], ecx |
||
505 | mov [eax+4], ecx |
||
506 | mov [eax+8], ecx |
||
507 | mov [eax+12], ecx |
||
508 | .cont: |
||
509 | add eax, 16 |
||
510 | cmp eax, hotkey_list+256*16 |
||
511 | jb .loop |
||
2709 | mario79 | 512 | ; get process PID |
513 | mov eax, esi |
||
9692 | Doczom | 514 | shl eax, BSF sizeof.APPDATA |
515 | mov eax, [eax + SLOT_BASE + APPDATA.tid] |
||
2709 | mario79 | 516 | ; compare current lock input with process PID |
517 | cmp eax, [PID_lock_input] |
||
518 | jne @f |
||
519 | |||
520 | xor eax, eax |
||
521 | mov [PID_lock_input], eax |
||
522 | @@: |
||
2288 | clevermous | 523 | ; remove hotkeys in buffer |
524 | mov eax, hotkey_buffer |
||
525 | .loop2: |
||
526 | cmp [eax], esi |
||
527 | jnz .cont2 |
||
528 | and dword [eax+4], 0 |
||
529 | and dword [eax], 0 |
||
530 | .cont2: |
||
531 | add eax, 8 |
||
532 | cmp eax, hotkey_buffer+120*8 |
||
533 | jb .loop2 |
||
534 | |||
535 | mov ecx, esi ; remove buttons |
||
9910 | Doczom | 536 | .bnewba2: |
2288 | clevermous | 537 | mov edi, [BTN_ADDR] |
538 | mov eax, edi |
||
539 | cld |
||
540 | movzx ebx, word [edi] |
||
541 | inc bx |
||
9910 | Doczom | 542 | .bnewba: |
2288 | clevermous | 543 | dec bx |
9910 | Doczom | 544 | jz .bnmba |
2288 | clevermous | 545 | add eax, 0x10 |
546 | cmp cx, [eax] |
||
9910 | Doczom | 547 | jnz .bnewba |
2288 | clevermous | 548 | pusha |
549 | mov ecx, ebx |
||
550 | inc ecx |
||
551 | shl ecx, 4 |
||
552 | mov ebx, eax |
||
553 | add eax, 0x10 |
||
554 | call memmove |
||
555 | dec dword [edi] |
||
556 | popa |
||
9910 | Doczom | 557 | jmp .bnewba2 |
558 | .bnmba: |
||
2288 | clevermous | 559 | |
560 | pusha ; save window coordinates for window restoring |
||
561 | cld |
||
8858 | rgimad | 562 | shl esi, BSF sizeof.WDATA |
2288 | clevermous | 563 | add esi, window_data |
9715 | Doczom | 564 | mov eax, [esi + WDATA.box.left] |
2288 | clevermous | 565 | mov [draw_limits.left], eax |
9715 | Doczom | 566 | add eax, [esi + WDATA.box.width] |
2288 | clevermous | 567 | mov [draw_limits.right], eax |
9715 | Doczom | 568 | mov eax, [esi + WDATA.box.top] |
2288 | clevermous | 569 | mov [draw_limits.top], eax |
9715 | Doczom | 570 | add eax, [esi + WDATA.box.height] |
2288 | clevermous | 571 | mov [draw_limits.bottom], eax |
572 | |||
573 | xor eax, eax |
||
8858 | rgimad | 574 | mov edi, esi |
575 | mov ecx, sizeof.WDATA/4 |
||
576 | rep stosd |
||
2288 | clevermous | 577 | popa |
578 | |||
579 | ; debuggee test |
||
580 | pushad |
||
581 | mov edi, esi |
||
9692 | Doczom | 582 | shl edi, BSF sizeof.APPDATA |
583 | mov eax, [SLOT_BASE + edi + APPDATA.debugger_slot] |
||
2288 | clevermous | 584 | test eax, eax |
585 | jz .nodebug |
||
3598 | clevermous | 586 | movi ecx, 8 |
9692 | Doczom | 587 | push dword [SLOT_BASE + edi + APPDATA.tid]; PID |
2288 | clevermous | 588 | push 2 |
589 | call debugger_notify |
||
590 | pop ecx |
||
591 | pop ecx |
||
592 | .nodebug: |
||
593 | popad |
||
594 | |||
595 | mov ebx, [.slot] |
||
9709 | Doczom | 596 | shl ebx, BSF sizeof.APPDATA |
2288 | clevermous | 597 | push ebx |
9715 | Doczom | 598 | mov ebx, [SLOT_BASE + ebx + APPDATA.pl0_stack] |
2288 | clevermous | 599 | |
600 | stdcall kernel_free, ebx |
||
601 | |||
602 | pop ebx |
||
9715 | Doczom | 603 | mov ebx, [SLOT_BASE + ebx + APPDATA.cur_dir] |
2288 | clevermous | 604 | stdcall kernel_free, ebx |
605 | |||
606 | mov edi, [.slot] |
||
9709 | Doczom | 607 | shl edi, BSF sizeof.APPDATA |
2288 | clevermous | 608 | add edi, SLOT_BASE |
609 | |||
9715 | Doczom | 610 | mov eax, [edi + APPDATA.io_map] |
611 | cmp eax, [SLOT_BASE + sizeof.APPDATA+APPDATA.io_map] |
||
2288 | clevermous | 612 | je @F |
613 | call free_page |
||
614 | @@: |
||
615 | mov eax, [edi+APPDATA.io_map+4] |
||
8093 | dunkaist | 616 | cmp eax, [SLOT_BASE+sizeof.APPDATA+APPDATA.io_map+4] |
2288 | clevermous | 617 | je @F |
618 | call free_page |
||
619 | @@: |
||
9715 | Doczom | 620 | lea ebx, [edi + APPDATA.list] |
5130 | serge | 621 | list_del ebx ;destroys edx, ecx |
622 | |||
2288 | clevermous | 623 | ; activate window |
624 | movzx eax, word [WIN_STACK + esi*2] |
||
8866 | rgimad | 625 | cmp eax, [thread_count] |
2288 | clevermous | 626 | jne .dont_activate |
627 | pushad |
||
628 | .check_next_window: |
||
629 | dec eax |
||
630 | cmp eax, 1 |
||
631 | jbe .nothing_to_activate |
||
9715 | Doczom | 632 | lea esi, [WIN_POS + eax*2] |
2288 | clevermous | 633 | movzx edi, word [esi] ; edi = process |
9709 | Doczom | 634 | shl edi, BSF sizeof.APPDATA |
635 | cmp [SLOT_BASE + edi + APPDATA.state], TSTATE_FREE ; skip free slots |
||
2288 | clevermous | 636 | je .check_next_window |
9926 | Doczom | 637 | shr edi, (BSF sizeof.APPDATA - BSF sizeof.WDATA) |
2288 | clevermous | 638 | add edi, window_data |
639 | ; \begin{diamond}[19.09.2006] |
||
640 | ; skip minimized windows |
||
641 | test [edi + WDATA.fl_wstate], WSTATE_MINIMIZED |
||
642 | jnz .check_next_window |
||
643 | ; \end{diamond} |
||
644 | call waredraw |
||
645 | .nothing_to_activate: |
||
646 | popad |
||
647 | .dont_activate: |
||
648 | |||
649 | push esi ; remove hd1 & cd & flp reservation |
||
9692 | Doczom | 650 | shl esi, BSF sizeof.APPDATA |
9715 | Doczom | 651 | mov esi, [SLOT_BASE + esi + APPDATA.tid] |
2288 | clevermous | 652 | cmp [cd_status], esi |
653 | jnz @f |
||
654 | call free_cd_channel |
||
655 | and [cd_status], 0 |
||
656 | @@: |
||
657 | pop esi |
||
658 | cmp [bgrlockpid], esi |
||
659 | jnz @f |
||
660 | and [bgrlockpid], 0 |
||
661 | and [bgrlock], 0 |
||
662 | @@: |
||
663 | |||
664 | pusha ; remove all port reservations |
||
665 | mov edx, esi |
||
9692 | Doczom | 666 | shl edx, BSF sizeof.APPDATA |
9715 | Doczom | 667 | mov edx, [SLOT_BASE + edx + APPDATA.tid] |
2288 | clevermous | 668 | |
9910 | Doczom | 669 | .rmpr0: |
2288 | clevermous | 670 | mov esi, [RESERVED_PORTS] |
671 | |||
672 | test esi, esi |
||
9910 | Doczom | 673 | jz .rmpr9 |
2288 | clevermous | 674 | |
9910 | Doczom | 675 | .rmpr3: |
2288 | clevermous | 676 | |
677 | mov edi, esi |
||
678 | shl edi, 4 |
||
679 | add edi, RESERVED_PORTS |
||
680 | |||
681 | cmp edx, [edi] |
||
9910 | Doczom | 682 | je .rmpr4 |
2288 | clevermous | 683 | |
684 | dec esi |
||
9910 | Doczom | 685 | jnz .rmpr3 |
2288 | clevermous | 686 | |
9910 | Doczom | 687 | jmp .rmpr9 |
2288 | clevermous | 688 | |
9910 | Doczom | 689 | .rmpr4: |
2288 | clevermous | 690 | |
691 | mov ecx, 256 |
||
692 | sub ecx, esi |
||
693 | shl ecx, 4 |
||
694 | |||
695 | mov esi, edi |
||
696 | add esi, 16 |
||
697 | cld |
||
698 | rep movsb |
||
699 | |||
700 | dec dword [RESERVED_PORTS] |
||
701 | |||
9910 | Doczom | 702 | jmp .rmpr0 |
2288 | clevermous | 703 | |
9910 | Doczom | 704 | .rmpr9: |
9743 | Doczom | 705 | popa |
2288 | clevermous | 706 | |
9743 | Doczom | 707 | ; clearing APPDATA structure this thread |
708 | pushad |
||
709 | mov edi, esi |
||
710 | shl edi, BSF sizeof.APPDATA |
||
711 | add edi, SLOT_BASE |
||
712 | mov eax, 0x20202020 |
||
713 | stosd |
||
714 | stosd |
||
715 | stosd |
||
716 | mov ecx, 244/4 |
||
717 | xor eax, eax |
||
718 | rep stosd |
||
719 | popad |
||
720 | |||
2288 | clevermous | 721 | mov edi, esi ; do not run this process slot |
9709 | Doczom | 722 | shl edi, BSF sizeof.APPDATA |
9715 | Doczom | 723 | mov [SLOT_BASE + edi + APPDATA.state], TSTATE_FREE |
2288 | clevermous | 724 | ; debugger test - terminate all debuggees |
725 | mov eax, 2 |
||
9715 | Doczom | 726 | mov ecx, SLOT_BASE + 2*sizeof.APPDATA + APPDATA.debugger_slot |
2288 | clevermous | 727 | .xd0: |
8866 | rgimad | 728 | cmp eax, [thread_count] |
2288 | clevermous | 729 | ja .xd1 |
730 | cmp dword [ecx], esi |
||
731 | jnz @f |
||
732 | and dword [ecx], 0 |
||
733 | pushad |
||
734 | xchg eax, ecx |
||
735 | mov ebx, 2 |
||
736 | call sys_system |
||
737 | popad |
||
738 | @@: |
||
739 | inc eax |
||
9692 | Doczom | 740 | add ecx, sizeof.APPDATA |
2288 | clevermous | 741 | jmp .xd0 |
742 | .xd1: |
||
5130 | serge | 743 | ;release slot |
744 | |||
745 | bts [thr_slot_map], esi |
||
746 | |||
747 | mov ecx, [.process] |
||
9715 | Doczom | 748 | lea eax, [ecx + PROC.thr_list] |
749 | cmp eax, [eax + LHEAD.next] |
||
5130 | serge | 750 | jne @F |
751 | |||
752 | call destroy_process.internal |
||
753 | @@: |
||
2288 | clevermous | 754 | sti ; .. and life goes on |
755 | |||
756 | mov eax, [draw_limits.left] |
||
757 | mov ebx, [draw_limits.top] |
||
758 | mov ecx, [draw_limits.right] |
||
759 | mov edx, [draw_limits.bottom] |
||
760 | call calculatescreen |
||
761 | xor eax, eax |
||
762 | xor esi, esi |
||
763 | call redrawscreen |
||
764 | |||
3534 | clevermous | 765 | call unlock_application_table |
2288 | clevermous | 766 | ;mov esi,process_terminated |
767 | ;call sys_msg_board_str |
||
5130 | serge | 768 | add esp, 8 |
2288 | clevermous | 769 | ret |
770 | restore .slot |
||
5130 | serge | 771 | restore .process |
2288 | clevermous | 772 | |
3296 | clevermous | 773 | ; Three following procedures are used to guarantee that |
774 | ; some part of kernel code will not be terminated from outside |
||
775 | ; while it is running. |
||
776 | ; Note: they do not protect a thread from terminating due to errors inside |
||
777 | ; the thread; accessing a nonexisting memory would still terminate it. |
||
778 | |||
779 | ; First two procedures must be used in pair by thread-to-be-protected |
||
780 | ; to signal the beginning and the end of an important part. |
||
781 | ; It is OK to have nested areas. |
||
782 | |||
783 | ; The last procedure must be used by outside wanna-be-terminators; |
||
784 | ; if it is safe to terminate the given thread immediately, it returns eax=1; |
||
785 | ; otherwise, it returns eax=0 and notifies the target thread that it should |
||
786 | ; terminate itself when leaving a critical area (the last critical area if |
||
787 | ; they are nested). |
||
788 | |||
789 | ; Implementation. Those procedures use one dword in APPDATA for the thread, |
||
790 | ; APPDATA.terminate_protection. |
||
791 | ; * The upper bit is 1 during normal operations and 0 when terminate is requested. |
||
792 | ; * Other bits form a number = depth of critical regions, |
||
793 | ; plus 1 if the upper bit is 1. |
||
794 | ; * When this dword goes to zero, the thread should be destructed, |
||
795 | ; and the procedure in which it happened becomes responsible for destruction. |
||
796 | |||
797 | ; Enter critical area. Called by thread which wants to be protected. |
||
798 | proc protect_from_terminate |
||
799 | mov edx, [current_slot] |
||
800 | ; Atomically increment depth of critical areas and get the old value. |
||
801 | mov eax, 1 |
||
9715 | Doczom | 802 | lock xadd [edx + APPDATA.terminate_protection], eax |
3296 | clevermous | 803 | ; If the old value was zero, somebody has started to terminate us, |
804 | ; so we are destructing and cannot do anything protected. |
||
805 | ; Otherwise, return to the caller. |
||
806 | test eax, eax |
||
807 | jz @f |
||
808 | ret |
||
809 | @@: |
||
810 | ; Wait for somebody to finish us. |
||
811 | call change_task |
||
812 | jmp @b |
||
813 | endp |
||
814 | |||
815 | ; Leave critical area. Called by thread which wants to be protected. |
||
816 | proc unprotect_from_terminate |
||
817 | mov edx, [current_slot] |
||
818 | ; Atomically decrement depth of critical areas. |
||
9715 | Doczom | 819 | lock dec [edx + APPDATA.terminate_protection] |
3296 | clevermous | 820 | ; If the result of decrement is zero, somebody has requested termination, |
821 | ; but at that moment we were inside a critical area; terminate now. |
||
822 | jz sys_end |
||
823 | ; Otherwise, return to the caller. |
||
824 | ret |
||
825 | endp |
||
826 | |||
8093 | dunkaist | 827 | ; Request termination of thread identified by edx = SLOT_BASE + slot*sizeof.APPDATA. |
3296 | clevermous | 828 | ; Called by anyone. |
829 | proc request_terminate |
||
830 | xor eax, eax ; set return value |
||
831 | ; Atomically clear the upper bit. If it was already zero, then |
||
832 | ; somebody has requested termination before us, so just exit. |
||
9715 | Doczom | 833 | lock btr [edx + APPDATA.terminate_protection], 31 |
3296 | clevermous | 834 | jnc .unsafe |
835 | ; Atomically decrement depth of critical areas. |
||
9715 | Doczom | 836 | lock dec [edx + APPDATA.terminate_protection] |
3296 | clevermous | 837 | ; If the result of decrement is nonzero, the target thread is inside a |
838 | ; critical area; leave termination to leaving that area. |
||
839 | jnz .unsafe |
||
840 | ; Otherwise, it is safe to kill the target now and the caller is responsible |
||
841 | ; for this. Return eax=1. |
||
842 | inc eax |
||
843 | .unsafe: |
||
844 | ret |
||
845 | endp |
||
846 |