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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: 9976 $ |
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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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9976 | Jurgen | 204 | cmp ebx, 12 |
205 | je .ex_stack |
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206 | cmp ebx, 14 |
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207 | jne .nostack |
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208 | mov ecx, cr2 |
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209 | sub ecx, [reg_esp3] |
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210 | jg .nostack |
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211 | add ecx, 1000h |
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212 | jl .nostack |
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213 | .ex_stack: |
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214 | xor ecx, ecx |
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215 | mov ecx, [ecx+APP_HEADER_01_.except_stack_top] |
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216 | test ecx, ecx |
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217 | jle .nostack |
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218 | xchg edi, eax |
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219 | sub ecx, sizeof.EXCEPT_STACK |
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220 | push ebx |
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221 | push 1 |
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222 | pop ebx |
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223 | .lock: |
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224 | lock bts [ecx+EXCEPT_STACK.LockAccess], 0 |
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225 | jnc .lock1 |
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226 | call delay_hs_unprotected |
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227 | jmp .lock |
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228 | .lock1: |
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229 | pop ebx |
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230 | cmp ebx, 14 |
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231 | jne .ex12 |
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232 | btr [esi+APPDATA.except_mask], 12 |
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233 | jc .ex_stack1 |
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234 | xchg eax, edi |
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235 | jmp .nostack |
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236 | .ex_stack1: |
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237 | bts [esi+APPDATA.except_mask], ebx |
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238 | dec ebx |
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239 | dec ebx |
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240 | .ex12: |
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241 | mov [ecx+EXCEPT_STACK.ExcCode], ebx |
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242 | mov eax, ecx |
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243 | xchg [reg_esp3], eax |
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244 | mov [ecx+EXCEPT_STACK.OldESP], eax |
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245 | mov eax, cr2 |
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246 | mov [ecx+EXCEPT_STACK.RegCR2], eax |
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247 | xchg edi, [reg_eip] |
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248 | mov [ecx+EXCEPT_STACK.RegEIP], edi |
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249 | jmp .end |
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250 | .nostack: |
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2288 | clevermous | 251 | xchg eax, [reg_eip] |
252 | sub dword[reg_esp3], 8 |
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253 | mov edi, [reg_esp3] |
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254 | stosd |
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255 | mov [edi], ebx |
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9976 | Jurgen | 256 | .end: |
2288 | clevermous | 257 | restore_ring3_context |
258 | ; simply return control to interrupted process |
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259 | unknown_interrupt: |
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260 | iretd |
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261 | |||
262 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
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263 | ; bl - error vector |
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264 | show_error_parameters: |
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265 | cmp bl, 0x06 |
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266 | jnz .no_ud |
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267 | push ebx |
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268 | mov ebx, ud_user_message |
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269 | mov ebp, notifyapp |
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270 | call fs_execute_from_sysdir_param |
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271 | pop ebx |
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272 | .no_ud: |
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9692 | Doczom | 273 | mov edx, [current_slot];not scratched below |
3309 | esevece | 274 | if lang eq sp |
9692 | Doczom | 275 | DEBUGF 1, "K : Proceso - terminado forzado PID: %x [%s]\n", [edx + APPDATA.tid], [current_slot] |
3309 | esevece | 276 | else |
9692 | Doczom | 277 | DEBUGF 1, "K : Process - forced terminate PID: %x [%s]\n", [edx + APPDATA.tid], [current_slot] |
3309 | esevece | 278 | end if |
2288 | clevermous | 279 | cmp bl, 0x08 |
280 | jb .l0 |
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6817 | dunkaist | 281 | cmp bl, 0x11 |
2288 | clevermous | 282 | jbe .l1 |
283 | .l0: |
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284 | mov bl, 0x09 |
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285 | .l1: |
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286 | mov eax, [msg_fault_sel+ebx*4 - 0x08*4] |
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287 | DEBUGF 1, "K : %s\n", eax |
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288 | mov eax, [reg_cs3+4] |
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289 | mov edi, msg_sel_app |
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290 | mov ebx, [reg_esp3+4] |
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291 | cmp eax, app_code |
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292 | je @f |
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293 | mov edi, msg_sel_ker |
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294 | mov ebx, [reg_esp0+4] |
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295 | @@: |
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296 | DEBUGF 1, "K : EAX : %x EBX : %x ECX : %x\n", [reg_eax+4], [reg_ebx+4], [reg_ecx+4] |
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297 | DEBUGF 1, "K : EDX : %x ESI : %x EDI : %x\n", [reg_edx+4], [reg_esi+4], [reg_edi+4] |
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298 | DEBUGF 1, "K : EBP : %x EIP : %x ESP : %x\n", [reg_ebp+4], [reg_eip+4], ebx |
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299 | DEBUGF 1, "K : Flags : %x CS : %x (%s)\n", [reg_eflags+4], eax, edi |
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3911 | mario79 | 300 | |
3909 | mario79 | 301 | DEBUGF 1, "K : Stack dump:\n" |
3911 | mario79 | 302 | push eax ebx ecx edx |
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, "K : [ESP+00]: %x",[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, " [ESP+04]: %x",[ebx] |
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312 | add ebx, 4 |
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313 | call .check_ESP |
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314 | test eax, eax |
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315 | jnz .error_ESP |
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5356 | serge | 316 | DEBUGF 1, " [ESP+08]: %x\n",[ebx] |
3911 | mario79 | 317 | add ebx, 4 |
318 | call .check_ESP |
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319 | test eax, eax |
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320 | jnz .error_ESP |
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321 | DEBUGF 1, "K : [ESP+12]: %x",[ebx] |
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322 | add ebx, 4 |
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323 | call .check_ESP |
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324 | test eax, eax |
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325 | jnz .error_ESP |
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326 | DEBUGF 1, " [ESP+16]: %x",[ebx] |
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327 | add ebx, 4 |
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328 | call .check_ESP |
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329 | test eax, eax |
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330 | jnz .error_ESP |
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331 | DEBUGF 1, " [ESP+20]: %x\n",[ebx] |
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332 | add ebx, 4 |
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333 | call .check_ESP |
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334 | test eax, eax |
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335 | jnz .error_ESP |
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336 | DEBUGF 1, "K : [ESP+24]: %x",[ebx] |
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337 | add ebx, 4 |
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338 | call .check_ESP |
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339 | test eax, eax |
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340 | jnz .error_ESP |
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341 | DEBUGF 1, " [ESP+28]: %x",[ebx] |
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342 | add ebx, 4 |
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343 | call .check_ESP |
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344 | test eax, eax |
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345 | jnz .error_ESP |
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5356 | serge | 346 | DEBUGF 1, " [ESP+32]: %x\n",[ebx] |
3911 | mario79 | 347 | pop edx ecx ebx eax |
2288 | clevermous | 348 | ret |
3911 | mario79 | 349 | .error_ESP: |
350 | pop edx ecx ebx eax |
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351 | DEBUGF 1, "\n" |
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352 | DEBUGF 1, "K : Unexpected end of the stack\n" |
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353 | ret |
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354 | ;-------------------------------------- |
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355 | .check_ESP: |
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356 | push ebx |
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357 | shr ebx, 12 |
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358 | mov ecx, ebx |
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359 | shr ecx, 10 |
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9715 | Doczom | 360 | mov edx, [master_tab + ecx*4] |
5356 | serge | 361 | test edx, PG_READ |
8050 | rgimad | 362 | jz .fail ; page table is not created |
363 | ; incorrect address in the program |
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3911 | mario79 | 364 | |
9715 | Doczom | 365 | mov eax, [page_tabs + ebx*4] |
3911 | mario79 | 366 | test eax, 2 |
8050 | rgimad | 367 | jz .fail ; address not reserved for use. error |
5356 | serge | 368 | |
369 | pop ebx |
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3911 | mario79 | 370 | xor eax, eax |
5356 | serge | 371 | ret |
372 | |||
3911 | mario79 | 373 | .fail: |
374 | pop ebx |
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375 | xor eax, eax |
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376 | dec eax |
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377 | ret |
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2288 | clevermous | 378 | ;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= |
379 | |||
380 | restore reg_ss |
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381 | restore reg_esp3 |
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382 | restore reg_eflags |
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383 | restore reg_cs |
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384 | restore reg_eip |
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385 | restore reg_eax |
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386 | restore reg_ecx |
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387 | restore reg_edx |
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388 | restore reg_ebx |
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389 | restore reg_esp0 |
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390 | restore reg_ebp |
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391 | restore reg_esi |
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392 | restore reg_edi |
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393 | |||
394 | |||
395 | align 4 |
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3534 | clevermous | 396 | lock_application_table: |
397 | push eax ecx edx |
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398 | mov ecx, application_table_mutex |
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399 | call mutex_lock |
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2288 | clevermous | 400 | |
9828 | Doczom | 401 | mov eax, [current_slot] |
402 | mov eax, [eax + APPDATA.tid] |
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2288 | clevermous | 403 | |
3534 | clevermous | 404 | mov [application_table_owner], eax |
2288 | clevermous | 405 | |
3534 | clevermous | 406 | pop edx ecx eax |
2288 | clevermous | 407 | |
408 | ret |
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409 | |||
410 | align 4 |
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3534 | clevermous | 411 | unlock_application_table: |
412 | push eax ecx edx |
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2288 | clevermous | 413 | |
3534 | clevermous | 414 | mov [application_table_owner], 0 |
415 | mov ecx, application_table_mutex |
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416 | call mutex_unlock |
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2288 | clevermous | 417 | |
3534 | clevermous | 418 | pop edx ecx eax |
2288 | clevermous | 419 | |
420 | ret |
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421 | |||
8050 | rgimad | 422 | ; sysfn 64 implementation |
2288 | clevermous | 423 | align 4 |
424 | sys_resize_app_memory: |
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8050 | rgimad | 425 | ; in: eax = 64 - function number |
426 | ; ebx = 1 - number of its only subfunction |
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427 | ; ecx = new amount of memory |
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428 | ; out: |
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429 | ; eax = 0 - success |
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430 | ; eax = 1 - out of memory |
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2288 | clevermous | 431 | |
432 | ; cmp eax,1 |
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433 | dec ebx |
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434 | jnz .no_application_mem_resize |
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4313 | mario79 | 435 | |
436 | mov eax, [pg_data.pages_free] |
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437 | shl eax, 12 |
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438 | cmp eax, ecx |
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439 | jae @f |
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440 | |||
441 | xor eax, eax |
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442 | inc eax |
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443 | jmp .store_result |
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444 | @@: |
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2288 | clevermous | 445 | stdcall new_mem_resize, ecx |
4313 | mario79 | 446 | .store_result: |
9831 | dunkaist | 447 | mov [esp + SYSCALL_STACK.eax], eax |
2288 | clevermous | 448 | .no_application_mem_resize: |
449 | ret |
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450 | |||
451 | iglobal |
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452 | ; process_terminating db 'K : Process - terminating',13,10,0 |
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453 | ; process_terminated db 'K : Process - done',13,10,0 |
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454 | msg_obj_destroy db 'K : destroy app object',13,10,0 |
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455 | endg |
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456 | |||
457 | ; param |
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458 | ; esi= slot |
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459 | |||
460 | align 4 |
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461 | terminate: ; terminate application |
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5130 | serge | 462 | destroy_thread: |
2288 | clevermous | 463 | |
5130 | serge | 464 | .slot equ esp+4 ;locals |
465 | .process equ esp ;ptr to parent process |
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2288 | clevermous | 466 | |
5130 | serge | 467 | |
2288 | clevermous | 468 | push esi ;save .slot |
469 | |||
9709 | Doczom | 470 | shl esi, BSF sizeof.APPDATA |
9715 | Doczom | 471 | mov edx, [SLOT_BASE + esi + APPDATA.process] |
5130 | serge | 472 | test edx, edx |
473 | jnz @F |
||
9709 | Doczom | 474 | mov [SLOT_BASE + esi + APPDATA.state], TSTATE_FREE |
2288 | clevermous | 475 | pop esi |
476 | ret |
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477 | @@: |
||
5130 | serge | 478 | push edx ;save .process |
9715 | Doczom | 479 | lea edx, [SLOT_BASE + esi] |
3534 | clevermous | 480 | call scheduler_remove_thread |
481 | call lock_application_table |
||
2288 | clevermous | 482 | |
483 | ; if the process is in V86 mode... |
||
484 | mov eax, [.slot] |
||
9709 | Doczom | 485 | shl eax, BSF sizeof.APPDATA |
9715 | Doczom | 486 | mov esi, [SLOT_BASE + eax + APPDATA.pl0_stack] |
2288 | clevermous | 487 | add esi, RING0_STACK_SIZE |
9715 | Doczom | 488 | cmp [SLOT_BASE + eax + APPDATA.saved_esp0], esi |
2288 | clevermous | 489 | jz .nov86 |
490 | ; ...it has page directory for V86 mode |
||
9715 | Doczom | 491 | mov esi, [SLOT_BASE + eax + APPDATA.saved_esp0] |
2288 | clevermous | 492 | mov ecx, [esi+4] |
9715 | Doczom | 493 | mov [SLOT_BASE + eax + APPDATA.process], ecx |
2288 | clevermous | 494 | ; ...and I/O permission map for V86 mode |
495 | mov ecx, [esi+12] |
||
9715 | Doczom | 496 | mov [SLOT_BASE + eax + APPDATA.io_map], ecx |
2288 | clevermous | 497 | mov ecx, [esi+8] |
9715 | Doczom | 498 | mov [SLOT_BASE + eax + APPDATA.io_map+4], ecx |
2288 | clevermous | 499 | .nov86: |
8050 | rgimad | 500 | ; destroy per-thread kernel objects |
2288 | clevermous | 501 | mov esi, [.slot] |
9709 | Doczom | 502 | shl esi, BSF sizeof.APPDATA |
9715 | Doczom | 503 | add esi, SLOT_BASE + APP_OBJ_OFFSET |
2288 | clevermous | 504 | @@: |
9715 | Doczom | 505 | mov eax, [esi + APPOBJ.fd] |
2288 | clevermous | 506 | test eax, eax |
507 | jz @F |
||
508 | |||
509 | cmp eax, esi |
||
510 | je @F |
||
511 | |||
512 | push esi |
||
9715 | Doczom | 513 | call [eax + APPOBJ.destroy] |
2288 | clevermous | 514 | DEBUGF 1,"%s",msg_obj_destroy |
515 | pop esi |
||
516 | jmp @B |
||
517 | @@: |
||
518 | mov esi, [.slot] |
||
3534 | clevermous | 519 | cmp [fpu_owner], esi ; if user fpu last -> fpu user = 2 |
2288 | clevermous | 520 | jne @F |
521 | |||
3534 | clevermous | 522 | mov [fpu_owner], 2 |
9715 | Doczom | 523 | mov eax, [SLOT_BASE + sizeof.APPDATA*2 + APPDATA.fpu_state] |
2288 | clevermous | 524 | clts |
525 | bt [cpu_caps], CAPS_SSE |
||
526 | jnc .no_SSE |
||
527 | fxrstor [eax] |
||
528 | jmp @F |
||
529 | .no_SSE: |
||
530 | fnclex |
||
531 | frstor [eax] |
||
532 | @@: |
||
533 | |||
534 | mov [KEY_COUNT], byte 0 ; empty keyboard buffer |
||
535 | mov [BTN_COUNT], byte 0 ; empty button buffer |
||
536 | |||
537 | |||
538 | ; remove defined hotkeys |
||
539 | mov eax, hotkey_list |
||
540 | .loop: |
||
541 | cmp [eax+8], esi |
||
542 | jnz .cont |
||
543 | mov ecx, [eax] |
||
544 | jecxz @f |
||
545 | push dword [eax+12] |
||
546 | pop dword [ecx+12] |
||
547 | @@: |
||
548 | mov ecx, [eax+12] |
||
549 | push dword [eax] |
||
550 | pop dword [ecx] |
||
551 | xor ecx, ecx |
||
552 | mov [eax], ecx |
||
553 | mov [eax+4], ecx |
||
554 | mov [eax+8], ecx |
||
555 | mov [eax+12], ecx |
||
556 | .cont: |
||
557 | add eax, 16 |
||
558 | cmp eax, hotkey_list+256*16 |
||
559 | jb .loop |
||
2709 | mario79 | 560 | ; get process PID |
561 | mov eax, esi |
||
9692 | Doczom | 562 | shl eax, BSF sizeof.APPDATA |
563 | mov eax, [eax + SLOT_BASE + APPDATA.tid] |
||
2709 | mario79 | 564 | ; compare current lock input with process PID |
565 | cmp eax, [PID_lock_input] |
||
566 | jne @f |
||
567 | |||
568 | xor eax, eax |
||
569 | mov [PID_lock_input], eax |
||
570 | @@: |
||
2288 | clevermous | 571 | ; remove hotkeys in buffer |
572 | mov eax, hotkey_buffer |
||
573 | .loop2: |
||
574 | cmp [eax], esi |
||
575 | jnz .cont2 |
||
576 | and dword [eax+4], 0 |
||
577 | and dword [eax], 0 |
||
578 | .cont2: |
||
579 | add eax, 8 |
||
580 | cmp eax, hotkey_buffer+120*8 |
||
581 | jb .loop2 |
||
582 | |||
583 | mov ecx, esi ; remove buttons |
||
9910 | Doczom | 584 | .bnewba2: |
2288 | clevermous | 585 | mov edi, [BTN_ADDR] |
586 | mov eax, edi |
||
587 | cld |
||
588 | movzx ebx, word [edi] |
||
589 | inc bx |
||
9910 | Doczom | 590 | .bnewba: |
2288 | clevermous | 591 | dec bx |
9910 | Doczom | 592 | jz .bnmba |
2288 | clevermous | 593 | add eax, 0x10 |
594 | cmp cx, [eax] |
||
9910 | Doczom | 595 | jnz .bnewba |
2288 | clevermous | 596 | pusha |
597 | mov ecx, ebx |
||
598 | inc ecx |
||
599 | shl ecx, 4 |
||
600 | mov ebx, eax |
||
601 | add eax, 0x10 |
||
602 | call memmove |
||
603 | dec dword [edi] |
||
604 | popa |
||
9910 | Doczom | 605 | jmp .bnewba2 |
606 | .bnmba: |
||
2288 | clevermous | 607 | |
608 | pusha ; save window coordinates for window restoring |
||
609 | cld |
||
8858 | rgimad | 610 | shl esi, BSF sizeof.WDATA |
2288 | clevermous | 611 | add esi, window_data |
9715 | Doczom | 612 | mov eax, [esi + WDATA.box.left] |
2288 | clevermous | 613 | mov [draw_limits.left], eax |
9715 | Doczom | 614 | add eax, [esi + WDATA.box.width] |
2288 | clevermous | 615 | mov [draw_limits.right], eax |
9715 | Doczom | 616 | mov eax, [esi + WDATA.box.top] |
2288 | clevermous | 617 | mov [draw_limits.top], eax |
9715 | Doczom | 618 | add eax, [esi + WDATA.box.height] |
2288 | clevermous | 619 | mov [draw_limits.bottom], eax |
620 | |||
621 | xor eax, eax |
||
8858 | rgimad | 622 | mov edi, esi |
623 | mov ecx, sizeof.WDATA/4 |
||
624 | rep stosd |
||
2288 | clevermous | 625 | popa |
626 | |||
627 | ; debuggee test |
||
628 | pushad |
||
629 | mov edi, esi |
||
9692 | Doczom | 630 | shl edi, BSF sizeof.APPDATA |
631 | mov eax, [SLOT_BASE + edi + APPDATA.debugger_slot] |
||
2288 | clevermous | 632 | test eax, eax |
633 | jz .nodebug |
||
3598 | clevermous | 634 | movi ecx, 8 |
9692 | Doczom | 635 | push dword [SLOT_BASE + edi + APPDATA.tid]; PID |
2288 | clevermous | 636 | push 2 |
637 | call debugger_notify |
||
638 | pop ecx |
||
639 | pop ecx |
||
640 | .nodebug: |
||
641 | popad |
||
642 | |||
643 | mov ebx, [.slot] |
||
9709 | Doczom | 644 | shl ebx, BSF sizeof.APPDATA |
2288 | clevermous | 645 | push ebx |
9715 | Doczom | 646 | mov ebx, [SLOT_BASE + ebx + APPDATA.pl0_stack] |
2288 | clevermous | 647 | |
648 | stdcall kernel_free, ebx |
||
649 | |||
650 | pop ebx |
||
9715 | Doczom | 651 | mov ebx, [SLOT_BASE + ebx + APPDATA.cur_dir] |
2288 | clevermous | 652 | stdcall kernel_free, ebx |
653 | |||
654 | mov edi, [.slot] |
||
9709 | Doczom | 655 | shl edi, BSF sizeof.APPDATA |
2288 | clevermous | 656 | add edi, SLOT_BASE |
657 | |||
9715 | Doczom | 658 | mov eax, [edi + APPDATA.io_map] |
659 | cmp eax, [SLOT_BASE + sizeof.APPDATA+APPDATA.io_map] |
||
2288 | clevermous | 660 | je @F |
661 | call free_page |
||
662 | @@: |
||
663 | mov eax, [edi+APPDATA.io_map+4] |
||
8093 | dunkaist | 664 | cmp eax, [SLOT_BASE+sizeof.APPDATA+APPDATA.io_map+4] |
2288 | clevermous | 665 | je @F |
666 | call free_page |
||
667 | @@: |
||
9715 | Doczom | 668 | lea ebx, [edi + APPDATA.list] |
5130 | serge | 669 | list_del ebx ;destroys edx, ecx |
670 | |||
2288 | clevermous | 671 | ; activate window |
672 | movzx eax, word [WIN_STACK + esi*2] |
||
8866 | rgimad | 673 | cmp eax, [thread_count] |
2288 | clevermous | 674 | jne .dont_activate |
675 | pushad |
||
676 | .check_next_window: |
||
677 | dec eax |
||
678 | cmp eax, 1 |
||
679 | jbe .nothing_to_activate |
||
9715 | Doczom | 680 | lea esi, [WIN_POS + eax*2] |
2288 | clevermous | 681 | movzx edi, word [esi] ; edi = process |
9709 | Doczom | 682 | shl edi, BSF sizeof.APPDATA |
683 | cmp [SLOT_BASE + edi + APPDATA.state], TSTATE_FREE ; skip free slots |
||
2288 | clevermous | 684 | je .check_next_window |
9926 | Doczom | 685 | shr edi, (BSF sizeof.APPDATA - BSF sizeof.WDATA) |
2288 | clevermous | 686 | add edi, window_data |
687 | ; \begin{diamond}[19.09.2006] |
||
688 | ; skip minimized windows |
||
689 | test [edi + WDATA.fl_wstate], WSTATE_MINIMIZED |
||
690 | jnz .check_next_window |
||
691 | ; \end{diamond} |
||
692 | call waredraw |
||
693 | .nothing_to_activate: |
||
694 | popad |
||
695 | .dont_activate: |
||
696 | |||
697 | push esi ; remove hd1 & cd & flp reservation |
||
9692 | Doczom | 698 | shl esi, BSF sizeof.APPDATA |
9715 | Doczom | 699 | mov esi, [SLOT_BASE + esi + APPDATA.tid] |
2288 | clevermous | 700 | cmp [cd_status], esi |
701 | jnz @f |
||
702 | call free_cd_channel |
||
703 | and [cd_status], 0 |
||
704 | @@: |
||
705 | pop esi |
||
706 | cmp [bgrlockpid], esi |
||
707 | jnz @f |
||
708 | and [bgrlockpid], 0 |
||
709 | and [bgrlock], 0 |
||
710 | @@: |
||
711 | |||
712 | pusha ; remove all port reservations |
||
713 | mov edx, esi |
||
9692 | Doczom | 714 | shl edx, BSF sizeof.APPDATA |
9715 | Doczom | 715 | mov edx, [SLOT_BASE + edx + APPDATA.tid] |
2288 | clevermous | 716 | |
9910 | Doczom | 717 | .rmpr0: |
2288 | clevermous | 718 | mov esi, [RESERVED_PORTS] |
719 | |||
720 | test esi, esi |
||
9910 | Doczom | 721 | jz .rmpr9 |
2288 | clevermous | 722 | |
9910 | Doczom | 723 | .rmpr3: |
2288 | clevermous | 724 | |
725 | mov edi, esi |
||
726 | shl edi, 4 |
||
727 | add edi, RESERVED_PORTS |
||
728 | |||
729 | cmp edx, [edi] |
||
9910 | Doczom | 730 | je .rmpr4 |
2288 | clevermous | 731 | |
732 | dec esi |
||
9910 | Doczom | 733 | jnz .rmpr3 |
2288 | clevermous | 734 | |
9910 | Doczom | 735 | jmp .rmpr9 |
2288 | clevermous | 736 | |
9910 | Doczom | 737 | .rmpr4: |
2288 | clevermous | 738 | |
739 | mov ecx, 256 |
||
740 | sub ecx, esi |
||
741 | shl ecx, 4 |
||
742 | |||
743 | mov esi, edi |
||
744 | add esi, 16 |
||
745 | cld |
||
746 | rep movsb |
||
747 | |||
748 | dec dword [RESERVED_PORTS] |
||
749 | |||
9910 | Doczom | 750 | jmp .rmpr0 |
2288 | clevermous | 751 | |
9910 | Doczom | 752 | .rmpr9: |
9743 | Doczom | 753 | popa |
2288 | clevermous | 754 | |
9743 | Doczom | 755 | ; clearing APPDATA structure this thread |
756 | pushad |
||
757 | mov edi, esi |
||
758 | shl edi, BSF sizeof.APPDATA |
||
759 | add edi, SLOT_BASE |
||
760 | mov eax, 0x20202020 |
||
761 | stosd |
||
762 | stosd |
||
763 | stosd |
||
764 | mov ecx, 244/4 |
||
765 | xor eax, eax |
||
766 | rep stosd |
||
767 | popad |
||
768 | |||
2288 | clevermous | 769 | mov edi, esi ; do not run this process slot |
9709 | Doczom | 770 | shl edi, BSF sizeof.APPDATA |
9715 | Doczom | 771 | mov [SLOT_BASE + edi + APPDATA.state], TSTATE_FREE |
2288 | clevermous | 772 | ; debugger test - terminate all debuggees |
773 | mov eax, 2 |
||
9715 | Doczom | 774 | mov ecx, SLOT_BASE + 2*sizeof.APPDATA + APPDATA.debugger_slot |
2288 | clevermous | 775 | .xd0: |
8866 | rgimad | 776 | cmp eax, [thread_count] |
2288 | clevermous | 777 | ja .xd1 |
778 | cmp dword [ecx], esi |
||
779 | jnz @f |
||
780 | and dword [ecx], 0 |
||
781 | pushad |
||
782 | xchg eax, ecx |
||
783 | mov ebx, 2 |
||
784 | call sys_system |
||
785 | popad |
||
786 | @@: |
||
787 | inc eax |
||
9692 | Doczom | 788 | add ecx, sizeof.APPDATA |
2288 | clevermous | 789 | jmp .xd0 |
790 | .xd1: |
||
5130 | serge | 791 | ;release slot |
792 | |||
793 | bts [thr_slot_map], esi |
||
794 | |||
795 | mov ecx, [.process] |
||
9715 | Doczom | 796 | lea eax, [ecx + PROC.thr_list] |
797 | cmp eax, [eax + LHEAD.next] |
||
5130 | serge | 798 | jne @F |
799 | |||
800 | call destroy_process.internal |
||
801 | @@: |
||
2288 | clevermous | 802 | sti ; .. and life goes on |
803 | |||
804 | mov eax, [draw_limits.left] |
||
805 | mov ebx, [draw_limits.top] |
||
806 | mov ecx, [draw_limits.right] |
||
807 | mov edx, [draw_limits.bottom] |
||
808 | call calculatescreen |
||
809 | xor eax, eax |
||
810 | xor esi, esi |
||
811 | call redrawscreen |
||
812 | |||
3534 | clevermous | 813 | call unlock_application_table |
2288 | clevermous | 814 | ;mov esi,process_terminated |
815 | ;call sys_msg_board_str |
||
5130 | serge | 816 | add esp, 8 |
2288 | clevermous | 817 | ret |
818 | restore .slot |
||
5130 | serge | 819 | restore .process |
2288 | clevermous | 820 | |
3296 | clevermous | 821 | ; Three following procedures are used to guarantee that |
822 | ; some part of kernel code will not be terminated from outside |
||
823 | ; while it is running. |
||
824 | ; Note: they do not protect a thread from terminating due to errors inside |
||
825 | ; the thread; accessing a nonexisting memory would still terminate it. |
||
826 | |||
827 | ; First two procedures must be used in pair by thread-to-be-protected |
||
828 | ; to signal the beginning and the end of an important part. |
||
829 | ; It is OK to have nested areas. |
||
830 | |||
831 | ; The last procedure must be used by outside wanna-be-terminators; |
||
832 | ; if it is safe to terminate the given thread immediately, it returns eax=1; |
||
833 | ; otherwise, it returns eax=0 and notifies the target thread that it should |
||
834 | ; terminate itself when leaving a critical area (the last critical area if |
||
835 | ; they are nested). |
||
836 | |||
837 | ; Implementation. Those procedures use one dword in APPDATA for the thread, |
||
838 | ; APPDATA.terminate_protection. |
||
839 | ; * The upper bit is 1 during normal operations and 0 when terminate is requested. |
||
840 | ; * Other bits form a number = depth of critical regions, |
||
841 | ; plus 1 if the upper bit is 1. |
||
842 | ; * When this dword goes to zero, the thread should be destructed, |
||
843 | ; and the procedure in which it happened becomes responsible for destruction. |
||
844 | |||
845 | ; Enter critical area. Called by thread which wants to be protected. |
||
846 | proc protect_from_terminate |
||
847 | mov edx, [current_slot] |
||
848 | ; Atomically increment depth of critical areas and get the old value. |
||
849 | mov eax, 1 |
||
9715 | Doczom | 850 | lock xadd [edx + APPDATA.terminate_protection], eax |
3296 | clevermous | 851 | ; If the old value was zero, somebody has started to terminate us, |
852 | ; so we are destructing and cannot do anything protected. |
||
853 | ; Otherwise, return to the caller. |
||
854 | test eax, eax |
||
855 | jz @f |
||
856 | ret |
||
857 | @@: |
||
858 | ; Wait for somebody to finish us. |
||
859 | call change_task |
||
860 | jmp @b |
||
861 | endp |
||
862 | |||
863 | ; Leave critical area. Called by thread which wants to be protected. |
||
864 | proc unprotect_from_terminate |
||
865 | mov edx, [current_slot] |
||
866 | ; Atomically decrement depth of critical areas. |
||
9715 | Doczom | 867 | lock dec [edx + APPDATA.terminate_protection] |
3296 | clevermous | 868 | ; If the result of decrement is zero, somebody has requested termination, |
869 | ; but at that moment we were inside a critical area; terminate now. |
||
870 | jz sys_end |
||
871 | ; Otherwise, return to the caller. |
||
872 | ret |
||
873 | endp |
||
874 | |||
8093 | dunkaist | 875 | ; Request termination of thread identified by edx = SLOT_BASE + slot*sizeof.APPDATA. |
3296 | clevermous | 876 | ; Called by anyone. |
877 | proc request_terminate |
||
878 | xor eax, eax ; set return value |
||
879 | ; Atomically clear the upper bit. If it was already zero, then |
||
880 | ; somebody has requested termination before us, so just exit. |
||
9715 | Doczom | 881 | lock btr [edx + APPDATA.terminate_protection], 31 |
3296 | clevermous | 882 | jnc .unsafe |
883 | ; Atomically decrement depth of critical areas. |
||
9715 | Doczom | 884 | lock dec [edx + APPDATA.terminate_protection] |
3296 | clevermous | 885 | ; If the result of decrement is nonzero, the target thread is inside a |
886 | ; critical area; leave termination to leaving that area. |
||
887 | jnz .unsafe |
||
888 | ; Otherwise, it is safe to kill the target now and the caller is responsible |
||
889 | ; for this. Return eax=1. |
||
890 | inc eax |
||
891 | .unsafe: |
||
892 | ret |
||
893 | endp |
||
894 |