680 lines
20 KiB
NASM
680 lines
20 KiB
NASM
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.xlist
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include kernel.inc
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include pdb.inc
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include tdb.inc
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include newexe.inc
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include eems.inc
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ifdef WOW
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include vint.inc
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endif
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.list
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externFP KillLibraries
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ifndef WOW
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externFP WriteOutProfiles
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endif
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DataBegin
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externB PhantArray
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externB kernel_flags
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externB fBreak
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externB fInt21
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ifndef WOW
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externB fProfileMaybeStale
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endif
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externW curTDB
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externW headPDB
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externW topPDB
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ife PMODE32
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externW hXMMHeap
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endif
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externD lpInt21
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externD pSftLink
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externD lpWinSftLink
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externD pSysProc
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externD pMouseTermProc
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externD pKeyboardTermProc
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externD pSystemTermProc
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externW MyCSAlias
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externD myInt2F
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if ROM
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externD prevInt00Proc
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externD prevInt21Proc
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externD prevInt24Proc
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externD prevInt2FProc
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externD prevInt3FProc
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externD prevInt67Proc
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externD prevInt02Proc
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externD prevInt04Proc
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externD prevInt06Proc
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externD prevInt07Proc
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externD prevInt3EProc
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externD prevInt75Proc
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externD prevInt0CProc
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externD prevInt0DProc
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externD prevIntx6Proc
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externD prevInt0EProc
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endif
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DataEnd
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sBegin CODE
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assumes CS,CODE
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assumes ds, nothing
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assumes es, nothing
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ife ROM
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externD prevInt00Proc
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externD prevInt21Proc
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externD prevInt24Proc
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externD prevInt2FProc
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externD prevInt3FProc
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externD prevInt67Proc
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externD prevInt02Proc
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externD prevInt04Proc
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externD prevInt06Proc
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externD prevInt07Proc
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externD prevInt3EProc
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externD prevInt75Proc
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externD prevInt0CProc
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externD prevInt0DProc
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externD prevIntx6Proc
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externD prevInt0EProc
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ifdef WOW
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externD prevInt01proc
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externD prevInt03proc
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externD oldInt00proc
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endif
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endif
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if ROM
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externFP PrevROMInt21Proc
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endif
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externNP real_DOS
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externNP Enter_gmove_stack
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externNP TerminatePDB
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;-----------------------------------------------------------------------;
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; InternalEnableDOS
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;
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;
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; Entry:
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; none
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; Returns:
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;
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; Registers Destroyed:
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;
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; History:
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; Thu 21-Sep-1989 20:44:48 -by- David N. Weise [davidw]
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; Added this nifty comment block.
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;-----------------------------------------------------------------------;
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SetWinVec MACRO vec
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externFP Int&vec&Handler
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mov dx, codeoffset Int&vec&Handler
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mov ax, 25&vec&h
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pushf
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if ROM
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call PrevROMInt21Proc
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else
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call prevInt21Proc
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endif
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endm
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assumes ds, nothing
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assumes es, nothing
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cProc InternalEnableDOS,<PUBLIC,FAR>
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cBegin nogen
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push si
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push ds
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SetKernelDS
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mov al,1
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xchg al,fInt21 ; set hook count to 1
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or al,al ; was it zero?
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jz @f
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jmp ena21 ; no, just leave
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@@:
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; now link back nodes to SFT if kernel had done it before. InternalDisableDOS
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; saves the link in the DWORD variable lpWinSftLink. If this variable is NULL
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; then either this is the first time InternalEnableDOS is being called or
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; else the SFT had not been grown.
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cmp lpWinSftLink.sel,0 ;was it allocated ?
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jz @f ;no.
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push ds ;save
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mov cx,lpWinSftLink.sel ;get the selector
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mov dx,lpWinSftLink.off ;get the offset
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lds bx,[pSftLink] ;place where we hooked new entry
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mov word ptr ds:[bx][0],dx ;restore offset
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mov word ptr ds:[bx][2],cx ;restore segment
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pop ds ;restore data segment
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@@:
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; WARNING!! The ^C setting diddle MUST BE FIRST IN HERE......
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; If you do some other INT 21 call before this you will have
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; a "^C window", so don't do it....
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mov ax,3301h ; disable ^C checking
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mov dl,0
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call real_DOS
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mov bx,TopPDB
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mov ah,50h
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call real_DOS ; This way, or TDB_PDB gets set wrong
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ifndef WOW
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ends1: mov ah,6 ; clean out any pending keys
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mov dl,0FFh
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call real_DOS
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jnz ends1
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endif
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mov es,curTDB
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mov bx,es:[TDB_PDB]
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mov ah,50h
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int 21h
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push ds
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lds dx,myInt2F
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mov ax,252Fh
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int 21h
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smov ds,cs ; Pick up executable sel/seg
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UnSetKernelDS
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SetWinVec 24
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SetWinVec 00
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SetWinVec 02
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SetWinVec 04
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SetWinVec 06
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SetWinVec 07
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SetWinVec 3E
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SetWinVec 75
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pop ds
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ReSetKernelDS
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mov bx,2 ; 2 = Enable/Disable one drive logic
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xor ax,ax ; FALSE = Disable
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cCall [pSysProc],<bx,ax> ; NOTE: destroys ES if DOS < 3.20
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; Set up the PhantArray by calling inquire system for each drive letter
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mov bx,dataOffset PhantArray + 25 ; Array index
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mov cx,26 ; Drive #
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SetPhant:
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dec cx
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push cx
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push bx
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mov dx,1 ; InquireSystem
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cCall [pSysProc],<dx,cx>
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pop bx
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pop cx
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mov byte ptr [bx],0 ; Assume not Phantom
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cmp ax,2
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jae NotPhant ; Assumption correct
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; or dx,dx ; Drive just invalid?
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; jz NotPhant ; Yes, assumption correct
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mov byte ptr [bx],dl ; Drive is phantom
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NotPhant:
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dec bx ; Next array element
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jcxz phant_done
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jmp SetPhant
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phant_done:
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lds dx,lpInt21
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UnSetKernelDS
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mov ax,2521h
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int 21h
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ena21:
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pop ds
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pop si
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ret
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cEnd nogen
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;-----------------------------------------------------------------------;
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; InternalDisableDOS ;
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; ;
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; ;
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; Arguments: ;
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; ;
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; Returns: ;
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; ;
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; Error Returns: ;
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; ;
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; Registers Preserved: ;
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; ;
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; Registers Destroyed: ;
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; ;
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; Calls: ;
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; ;
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; History: ;
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; ;
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; Mon Oct 16, 1989 11:04:50 -by- Amit Chatterjee [amitc] ;
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; InternalDisableDOS now takes away any nodes that kernel would have ;
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; added to the SFT. InternalEnableDOS puts the nodes backs. Previously ;
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; the delinking was done by DisableKernel, but no one linked it back! ;
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; ;
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; Sat May 09, 1987 02:00:52p -by- David N. Weise [davidw] ;
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; Added this nifty comment block. ;
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; ;
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; Thu Apr 16, 1987 11:32:00p -by- Raymond E. Ozzie [-iris-] ;
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; Changed InternalDisableDOS to use real dos for 52h function, since ;
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; DosTrap3 doesn't have 52h defined and PassOnThrough will croak if the ;
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; current TDB's signature is 0, as it is during exit after the last ;
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; task has been deleted. ;
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;-----------------------------------------------------------------------;
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ReSetDOSVec MACRO vec
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lds dx,PrevInt&vec&proc
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mov ax,25&vec&h
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int 21h
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endm
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assumes ds, nothing
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assumes es, nothing
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cProc InternalDisableDOS,<PUBLIC,FAR>
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cBegin
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SetKernelDS es
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xor ax,ax
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xchg al,fInt21 ; set hook count to zero
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or al,al ; was it non zero?
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jnz @F
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jmp dis21 ; no, just leave
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@@:
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mov bx,2 ; 2 = Enable/Disable one drive logic
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mov ax,1 ; TRUE = Enable
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push es
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cCall pSysProc,<bx,ax>
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pop es
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mov ax,3301h ; disable ^C checking
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mov dl,0
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pushf
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ife PMODE32
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FCLI
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endif
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call [prevInt21Proc]
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mov ax,2521h
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lds dx,prevInt21Proc
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pushf
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ife PMODE32
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FCLI
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endif
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call [prevInt21Proc]
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push es
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mov ax,352Fh
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int 21h
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mov ax,es
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pop es
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mov myInt2F.sel,ax
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mov myInt2F.off,bx
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ReSetDOSVec 00 ; as a favor in win2 we restored this
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ReSetDOSVec 24
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ReSetDOSVec 2F
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ReSetDOSVec 02
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ReSetDOSVec 04
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ReSetDOSVec 06
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ReSetDOSVec 07
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ReSetDOSVec 3E
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ReSetDOSVec 75
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mov dl,fBreak ; return state of ^C checking
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mov ax,3301h
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int 21h
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dis21:
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cEnd
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;------------------------------------------------------------------
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;
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; Ancient WinOldAp hook.
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;
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;------------------------------------------------------------------
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public EnableDOS
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EnableDOS Label Byte
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if kdebug
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krDebugOut DEB_WARN, "Don't call EnableDOS"
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endif
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retf
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;------------------------------------------------------------------
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;
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; Ancient WinOldAp hook.
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;
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;------------------------------------------------------------------
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public DisableDOS
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DisableDOS Label Byte
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if kdebug
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krDebugOut DEB_WARN, "Don't call DisableDOS"
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endif
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retf
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;------------------------------------------------------------------
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;
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; Ancient WinOldAp hook.
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;
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;------------------------------------------------------------------
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public EnableKernel
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EnableKernel Label Byte
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if kdebug
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krDebugOut DEB_WARN, "Don't call EnableKernel"
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endif
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retf
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;-----------------------------------------------------------------------;
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; DisableKernel ;
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; ;
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; This call is provided as a Kernel service to applications that ;
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; wish to totally unhook Windows in order to do something radical ;
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; such as save the state of the world and restore it at a later ;
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; time. This is similar in many ways to the way OLDAPP support ;
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; works, with the addition that it also unhooks the kernel. ;
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; ;
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; Arguments: ;
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; ;
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; Returns: ;
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; ;
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; Error Returns: ;
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; ;
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; Registers Preserved: ;
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; DI,SI,DS ;
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; ;
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; Registers Destroyed: ;
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; ;
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; Calls: ;
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; ;
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; History: ;
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; ;
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; Sat May 09, 1987 02:34:35p -by- David N. Weise [davidw] ;
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; Merged changes in. Most of this came from ExitKernel. ;
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; ;
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; Tue Apr 28, 1987 11:12:00a -by- R.E.O. SpeedWagon [-????-] ;
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; Changed to indirect thru PDB to get JFN under DOS 3.x. ;
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; ;
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; Mon Apr 20, 1987 11:34:00p -by- R.E.O. SpeedWagon [-????-] ;
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; Set PDB to topPDB before final int 21/4C; we were sometimes exiting ;
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; with a task's PDB, and thus we came back to ExitCall2 instead of ;
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; going back to DOS! ;
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;-----------------------------------------------------------------------;
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assumes ds, nothing
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assumes es, nothing
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|
||
|
|
cProc DisableKernel,<PUBLIC,FAR>,<si,di>
|
||
|
|
cBegin
|
||
|
|
|
||
|
|
SetKernelDS
|
||
|
|
or Kernel_flags[2],KF2_WIN_EXIT ; prevent int 24h dialogs
|
||
|
|
cmp prevInt21Proc.sel,0
|
||
|
|
je nodisable
|
||
|
|
call InternalDisableDOS
|
||
|
|
nodisable:
|
||
|
|
|
||
|
|
SetKernelDS
|
||
|
|
mov ax,0203h ; Reset not present fault.
|
||
|
|
mov bl,0Bh
|
||
|
|
mov cx,prevInt3Fproc.sel
|
||
|
|
mov dx,prevInt3Fproc.off
|
||
|
|
int 31h
|
||
|
|
|
||
|
|
mov ax,0203h ; Reset stack fault.
|
||
|
|
mov bl,0Ch
|
||
|
|
mov cx,prevInt0Cproc.sel
|
||
|
|
mov dx,prevInt0Cproc.off
|
||
|
|
int 31h
|
||
|
|
|
||
|
|
mov ax,0203h ; Reset GP fault.
|
||
|
|
mov bl,0Dh
|
||
|
|
mov cx,prevInt0Dproc.sel
|
||
|
|
mov dx,prevInt0Dproc.off
|
||
|
|
int 31h
|
||
|
|
|
||
|
|
mov ax,0203h ; Reset invalid op-code exception.
|
||
|
|
mov bl,06h
|
||
|
|
mov cx,prevIntx6proc.sel
|
||
|
|
mov dx,prevIntx6proc.off
|
||
|
|
int 31h
|
||
|
|
|
||
|
|
mov ax,0203h ; Reset page fault.
|
||
|
|
mov bl,0Eh
|
||
|
|
mov cx,prevInt0Eproc.sel
|
||
|
|
mov dx,prevInt0Eproc.off
|
||
|
|
int 31h
|
||
|
|
|
||
|
|
ifdef WOW
|
||
|
|
mov ax,0203h ; Reset divide overflow traps
|
||
|
|
mov bl,00h
|
||
|
|
mov cx,oldInt00proc.sel
|
||
|
|
mov dx,oldInt00proc.off
|
||
|
|
int 31h
|
||
|
|
|
||
|
|
mov ax,0203h ; Reset single step traps
|
||
|
|
mov bl,01h
|
||
|
|
mov cx,prevInt01proc.sel
|
||
|
|
mov dx,prevInt01proc.off
|
||
|
|
int 31h
|
||
|
|
|
||
|
|
mov ax,0203h ; Reset breakpoint traps
|
||
|
|
mov bl,03h
|
||
|
|
mov cx,prevInt03proc.sel
|
||
|
|
mov dx,prevInt03proc.off
|
||
|
|
int 31h
|
||
|
|
endif
|
||
|
|
|
||
|
|
mov dx, [HeadPDB]
|
||
|
|
SetKernelDS es
|
||
|
|
UnSetKernelDS
|
||
|
|
exk1:
|
||
|
|
mov ds,dx
|
||
|
|
cmp dx, [topPDB] ; Skip KERNEL, he is about to get
|
||
|
|
je exk3 ; a 4C stuffed down his throat
|
||
|
|
|
||
|
|
push ds
|
||
|
|
call TerminatePDB
|
||
|
|
pop ds
|
||
|
|
|
||
|
|
exk3:
|
||
|
|
mov dx,ds:[PDB_Chain] ; move to next PDB in chain
|
||
|
|
or dx,dx
|
||
|
|
jnz exk1
|
||
|
|
|
||
|
|
mov bx,[topPDB] ; set to initial DOS task PDB
|
||
|
|
mov ah,50h ; set PDB function
|
||
|
|
int 21h
|
||
|
|
and Kernel_flags[2],NOT KF2_WIN_EXIT ; prevent int 24h dialogs
|
||
|
|
;
|
||
|
|
; Close all files on Kernel's PSP, 'cause we're gonna shrink the SFT and
|
||
|
|
; quit ourselves afterwards.
|
||
|
|
;
|
||
|
|
mov ds,[topPDB]
|
||
|
|
mov cx,ds:[PDB_JFN_Length]
|
||
|
|
exk4: mov bx,cx ; close all file handles
|
||
|
|
dec bx
|
||
|
|
cmp bx,5 ; console-related handle?
|
||
|
|
jb exk5 ; yup, don't close it (AUX, etc.)
|
||
|
|
mov ah,3eh
|
||
|
|
int 21h
|
||
|
|
exk5: loop exk4
|
||
|
|
|
||
|
|
; kernel could have added some nodes to the SFT. Delink them by removing
|
||
|
|
; the link from the last DOS link in the chain. We need to remember the
|
||
|
|
; current pointer there so that InternalEnableDOS can put it back.
|
||
|
|
|
||
|
|
lds bx,[pSftLink] ;place where we hooked new entry
|
||
|
|
assumes ds,nothing
|
||
|
|
mov cx,ds ;this could have been unitialized too
|
||
|
|
jcxz exk6 ;if unitialized, nothing to do
|
||
|
|
mov dx,ds:[bx].off ;get the current offset
|
||
|
|
mov cx,ds:[bx].sel ;get the current segment
|
||
|
|
mov ds:[bx].off,-1 ;remove windows SFT link
|
||
|
|
mov ds:[bx].sel, 0 ;remove windows SFT link
|
||
|
|
mov lpWinSftLink.off,dx ;save the offset
|
||
|
|
mov lpWinSftLink.sel,cx ;save the segment
|
||
|
|
exk6:
|
||
|
|
|
||
|
|
UnSetKernelDS es
|
||
|
|
cEnd
|
||
|
|
|
||
|
|
;------------------------------------------------------------------
|
||
|
|
;
|
||
|
|
; ExitKernel -- Bye, bye.
|
||
|
|
;
|
||
|
|
;------------------------------------------------------------------
|
||
|
|
ifndef WOW ; If we are closing down WOW then we don't want to go back to the DOS Prompt
|
||
|
|
; We want to kill the NTVDM WOW Process - so we don't need/want this code.
|
||
|
|
|
||
|
|
assumes ds, nothing
|
||
|
|
assumes es, nothing
|
||
|
|
|
||
|
|
cProc ExitKernel,<PUBLIC,FAR>
|
||
|
|
; parmW exitcode
|
||
|
|
cBegin nogen
|
||
|
|
SetKernelDS
|
||
|
|
or Kernel_flags[2],KF2_WIN_EXIT ; prevent int 24h dialogs
|
||
|
|
call KillLibraries ; Tell DLLs that the system is exiting
|
||
|
|
|
||
|
|
mov si,sp
|
||
|
|
mov si,ss:[si+4] ; get exit code
|
||
|
|
|
||
|
|
; Call driver termination procs, just to make sure that they have removed
|
||
|
|
; their interrupt vectors.
|
||
|
|
|
||
|
|
push si
|
||
|
|
mov ax,word ptr [pMouseTermProc]
|
||
|
|
or ax,word ptr [pMouseTermProc+2]
|
||
|
|
jz trm0
|
||
|
|
call [pMouseTermProc]
|
||
|
|
CheckKernelDS
|
||
|
|
trm0: mov ax,word ptr [pKeyboardTermProc]
|
||
|
|
or ax,word ptr [pKeyboardTermProc+2]
|
||
|
|
jz trm1
|
||
|
|
call [pKeyboardTermProc]
|
||
|
|
CheckKernelDS
|
||
|
|
trm1: mov ax,word ptr [pSystemTermProc]
|
||
|
|
or ax,word ptr [pSystemTermProc+2]
|
||
|
|
jz trm2
|
||
|
|
call [pSystemTermProc]
|
||
|
|
CheckKernelDS
|
||
|
|
trm2: pop si
|
||
|
|
|
||
|
|
call WriteOutProfiles
|
||
|
|
mov fProfileMaybeStale,1 ; Make sure we check the
|
||
|
|
; INI file next time around
|
||
|
|
;;; cCall CloseCachedFiles,<topPDB>
|
||
|
|
|
||
|
|
; Close open files and unhook kernel hooks
|
||
|
|
|
||
|
|
; get on a stack that's not in EMS land
|
||
|
|
|
||
|
|
call Enter_gmove_stack
|
||
|
|
|
||
|
|
cCall DisableKernel
|
||
|
|
CheckKernelDS
|
||
|
|
|
||
|
|
cmp si,EW_REBOOTSYSTEM ; Reboot windows?
|
||
|
|
jnz exitToDos
|
||
|
|
|
||
|
|
ifndef WOW
|
||
|
|
if PMODE32
|
||
|
|
mov ax,1600h
|
||
|
|
int 2Fh
|
||
|
|
test al,7Fh
|
||
|
|
jz NotRunningEnhancedMode
|
||
|
|
cmp al,1
|
||
|
|
je exitToDos ;RunningWindows3862x
|
||
|
|
cmp al,-1
|
||
|
|
je exitToDos ;RunningWindows3862x
|
||
|
|
xor di,di ; Zero return regs
|
||
|
|
mov es,di
|
||
|
|
mov bx,0009h ; Reboot device ID
|
||
|
|
mov ax,1684h ; Get device API entry point
|
||
|
|
int 2Fh
|
||
|
|
mov ax,es
|
||
|
|
or ax,di
|
||
|
|
jz exitToDos ; Reboot vxd not loaded. Exit to dos
|
||
|
|
|
||
|
|
; Call the reboot function
|
||
|
|
mov ax,0100h
|
||
|
|
push es
|
||
|
|
push di
|
||
|
|
mov bx,sp
|
||
|
|
call DWORD PTR ss:[bx]
|
||
|
|
|
||
|
|
jmp short exitToDos ; Reboot didn't work just exit to dos
|
||
|
|
|
||
|
|
NotRunningEnhancedMode:
|
||
|
|
endif
|
||
|
|
endif ; WOW
|
||
|
|
|
||
|
|
mov ah, 0Dh ; Disk Reset so that Smartdrv etc buffers
|
||
|
|
int 21h ; are written to disk
|
||
|
|
|
||
|
|
mov ax, 0FE03h ; Flush Norton NCache
|
||
|
|
mov si, "CF"
|
||
|
|
mov di, "NU"
|
||
|
|
stc ; Yes! Really set carry too!
|
||
|
|
int 2Fh
|
||
|
|
|
||
|
|
ifdef NEC_98
|
||
|
|
mov al,92h
|
||
|
|
out 37h,al
|
||
|
|
mov al,07h
|
||
|
|
out 37h,al
|
||
|
|
mov al,0bh
|
||
|
|
out 37h,al
|
||
|
|
mov al,0fh
|
||
|
|
out 37h,al
|
||
|
|
mov al,08h
|
||
|
|
out 37h,al
|
||
|
|
out 50h,al
|
||
|
|
|
||
|
|
mov al,05h
|
||
|
|
out 0a2h,al ; graph off
|
||
|
|
out 62h,al ; text off
|
||
|
|
|
||
|
|
xor cx, cx
|
||
|
|
loop $
|
||
|
|
loop $
|
||
|
|
loop $
|
||
|
|
loop $
|
||
|
|
mov al, 00h
|
||
|
|
out 0f0h, al ; CPU Reset
|
||
|
|
jmp $
|
||
|
|
else ; NEC_98
|
||
|
|
int 19h ; Reboot via int 19h
|
||
|
|
endif ; NEC_98
|
||
|
|
|
||
|
|
|
||
|
|
exitToDos:
|
||
|
|
mov ax,si
|
||
|
|
mov ah,4Ch ; Leave Windows.
|
||
|
|
int 21h
|
||
|
|
cEnd nogen
|
||
|
|
|
||
|
|
endif ; NOT WOW
|
||
|
|
|
||
|
|
sEnd CODE
|
||
|
|
|
||
|
|
end
|