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Rev 9975 Rev 9976
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;; Copyright (C) KolibriOS team 2004-2022. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2022. All rights reserved. ;;
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;;  Distributed under terms of the GNU General Public License.  ;;
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;;  Distributed under terms of the GNU General Public License.  ;;
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;;                                                              ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 9975 $
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$Revision: 9976 $
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struct EXCEPT_STACK
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struct EXCEPT_STACK
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    RegEIP     dd ?
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    RegEIP     dd ?
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        call    change_task     ; SEE: core/shed.inc
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        call    change_task     ; SEE: core/shed.inc
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        restore_ring3_context
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        restore_ring3_context
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        iretd
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        iretd
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- 
 
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IRetToUserHook:
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        cmp     ebx, 12
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        je      .ex_stack
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        cmp     ebx, 14
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        jne     .nostack
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        mov     ecx, cr2
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        sub     ecx, [reg_esp3]
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        jg      .nostack
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        add     ecx, 1000h
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        jl      .nostack
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.ex_stack:
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        xor     ecx, ecx
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        mov     ecx, [ecx+APP_HEADER_01_.except_stack_top]
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        test    ecx, ecx
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        jle     .nostack
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        xchg    edi, eax
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        sub     ecx, sizeof.EXCEPT_STACK
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        push    ebx
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        push    1
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        pop     ebx
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.lock:
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        lock bts [ecx+EXCEPT_STACK.LockAccess], 0
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        jnc     .lock1
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        call    delay_hs_unprotected
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        jmp     .lock
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.lock1:
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        pop     ebx
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        cmp     ebx, 14
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        jne     .ex12
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        btr     [esi+APPDATA.except_mask], 12
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        jc      .ex_stack1
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        xchg    eax, edi
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        jmp     .nostack
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.ex_stack1:
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        bts     [esi+APPDATA.except_mask], ebx
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        dec     ebx
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        dec     ebx
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.ex12:
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        mov     [ecx+EXCEPT_STACK.ExcCode], ebx
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        mov     eax, ecx
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        xchg    [reg_esp3], eax
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        mov     [ecx+EXCEPT_STACK.OldESP], eax
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        mov     eax, cr2
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        mov     [ecx+EXCEPT_STACK.RegCR2], eax
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        xchg    edi, [reg_eip]
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        mov     [ecx+EXCEPT_STACK.RegEIP], edi
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        jmp     .end
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IRetToUserHook:
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.nostack:
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        xchg    eax, [reg_eip]
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        xchg    eax, [reg_eip]
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        sub     dword[reg_esp3], 8
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        sub     dword[reg_esp3], 8
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        mov     edi, [reg_esp3]
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        mov     edi, [reg_esp3]
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        stosd
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        stosd
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        mov     [edi], ebx
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        mov     [edi], ebx
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.end:
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        restore_ring3_context
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        restore_ring3_context
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; simply return control to interrupted process
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; simply return control to interrupted process
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unknown_interrupt:
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unknown_interrupt: