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164 lines
4.2 KiB
164 lines
4.2 KiB
;++
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;
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; WOW v1.0
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;
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; Copyright (c) 1991, Microsoft Corporation
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;
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; KBD.ASM
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; Win16 KEYBOARD thunks
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;
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; History:
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;
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; Created 06-Jan-1992 by NanduriR
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;--
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TITLE KEYBOARD.ASM
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PAGE ,132
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.286p
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.xlist
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include wow.inc
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include wowkbd.inc
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include cmacros.inc
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include windefs.inc
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include vdmtib.inc
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include dpmi.inc
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.list
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__acrtused = 0
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public __acrtused ;satisfy external C ref.
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ifdef DBCS
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externFP GetSystemDefaultLangID
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endif ; DBCS
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externFP WOW16Call
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createSeg _TEXT,CODE,WORD,PUBLIC,CODE
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createSeg _DATA,DATA,WORD,PUBLIC,DATA,DGROUP
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defgrp DGROUP,DATA
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sBegin DATA
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Reserved db 16 dup (0) ;reserved for Windows
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KEYBOARD_Identifier db 'KEYBOARD16 Data Segment'
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externD bios_proc
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sEnd DATA
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sBegin CODE
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assumes CS,CODE
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assumes DS,DATA
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assumes ES,NOTHING
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; Hung App Support
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; If USER32 is unable to terminate an app via End Task then it calls
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; WOW32 to kill the app. We do this by generating a keyboard h/w
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; interrupt 9. Since in WOW all keyboard input comes via USER32 the
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; keyboard h/w interrupt is unused for anything else so we can reuse
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; this interrupt.
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cProc KEYBOARD16,<PUBLIC,FAR>
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cBegin
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mov ax,3500h or 09h
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int 21h ; vector is in ES:BX
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mov word ptr [bios_proc][0], bx
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mov word ptr [bios_proc][2], es
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; Setup keyboard interrupt vector to point to our interrupt routine
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mov ax,2500h or 09h
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mov dx,OFFSET keybd_int
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push ds ; save DS
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push cs
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pop ds ; set DS = CS
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int 21h ; set the vector
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pop ds ; restore DS
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ifdef DBCS
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cCall GetSystemDefaultLangID
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endif ; DBCS
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mov ax,1
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cEnd
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INTA0 equ 20h ;X'20' 8259 Interrupt Control Port
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EOI equ 20h ;X'20' 8259 End-of-Interrupt ack
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public keybd_int
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keybd_int PROC FAR
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push ax
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push bx
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push es
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mov al,EOI ; Send Non-Specific EOI
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out INTA0,al
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;
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; Now we test the bit in low memory that is set by wow32 to see if this
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; is really a keyboard int forced in by the hung app support.
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;
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mov ax, 40h ;use bios data selector
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mov es, ax
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mov bx, FIXED_NTVDMSTATE_LINEAR - 400h
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.386 ;make it assemble
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.errnz VDM_WOWHUNGAPP AND 0ff00ffffh ;make sure it's the third byte
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test byte ptr es:[bx+2], VDM_WOWHUNGAPP SHR 16
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jnz short hungapp_exit ;jump if this is really a hung app
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pop es
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pop bx
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pop ax
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iret
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hungapp_exit:
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and byte ptr es:[bx+2], 255 - (VDM_WOWHUNGAPP SHR 16) ; turn it off
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pop es
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pop bx
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pop ax
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.286p
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DPMIBOP HungAppIretAndExit ; They said OK to Nuke app.
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keybd_int ENDP
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cProc WEP,<PUBLIC,FAR,PASCAL,NODATA,NOWIN,ATOMIC>
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parmW iExit ;DLL exit code
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cBegin
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mov ax,1 ;always indicate success
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cEnd
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assumes DS,NOTHING
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;;; KbdThunk INQUIRE ;Internal LOCALAPI
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;;; KbdThunk ENABLE ;Internal
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;;; KbdThunk DISABLE ;Internal
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KbdThunk TOASCII
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KbdThunk ANSITOOEM
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KbdThunk OEMTOANSI
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;;; KbdThunk SETSPEED ;Internal
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;;; KbdThunk SCREENSWITCHENABLE ;Internal
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;;; KbdThunk GETTABLESEG ;Internal
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;;; KbdThunk NEWTABLE ;Internal
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KbdThunk OEMKEYSCAN
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KbdThunk VKKEYSCAN
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KbdThunk GETKEYBOARDTYPE
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KbdThunk MAPVIRTUALKEY
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KbdThunk GETKBCODEPAGE
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KbdThunk GETKEYNAMETEXT
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KbdThunk ANSITOOEMBUFF
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KbdThunk OEMTOANSIBUFF
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;;; KbdThunk ENABLEKBSYSREQ ;Internal LOCALAPI
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;;; KbdThunk GETBIOSKEYPROC ; in kbdlocal.asm
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sEnd CODE
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end KEYBOARD16
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