101 lines
2.1 KiB
NASM
101 lines
2.1 KiB
NASM
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page ,132
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if 0
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/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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msgapi.asm
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Abstract:
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This module contains the messenger functions that we marginally support
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for VDM
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MessengerDispatch
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Author:
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Richard L Firth (rfirth) 21-Sep-1992
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Environment:
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Dos mode only
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Revision History:
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05-Sep-1991 rfirth
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Created
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--*/
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endif
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.xlist ; don't list these include files
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.xcref ; turn off cross-reference listing
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include dosmac.inc ; Break macro etc (for following include files only)
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include error.inc ; DOS errors - ERROR_INVALID_FUNCTION
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include segorder.inc ; segments
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include debugmac.inc ; DbgPrint macro
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include localmac.inc ; DbgPrint macro
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include asmmacro.inc ; language extensions
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include rdrsvc.inc ; BOP and SVC macros/dispatch codes
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include rdrmisc.inc ; miscellaneous definitions
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.cref ; switch cross-reference back on
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.list ; switch listing back on
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subttl ; kill subtitling started in include file
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.286
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ResidentCodeStart
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assume cs:ResidentCode
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assume ds:nothing
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assume es:nothing
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assume ss:nothing
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MessengerDispatchTable label word
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dw MessageInstalled
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dw MessageDone
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dw MessageLogging
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dw MessageUserFunction
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dw MessageUnusedFunction
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dw MessagePauseContinue
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LAST_MESSENGER_FUNCTION = (offset $ - offset MessengerDispatchTable)/2 - 1
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public MessengerDispatch
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MessengerDispatch proc near
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cmp al,LAST_MESSENGER_FUNCTION
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jbe @f
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mov al,ERROR_INVALID_PARAMETER
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stc
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ret
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@@: cbw
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push bx
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mov bx,ax
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shl bx,1
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mov ax,MessengerDispatchTable[bx]
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pop bx
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jmp ax
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MessengerDispatch endp
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MessageInstalled:
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dec al
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MessageDone:
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ret
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MessageLogging:
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MessageUserFunction:
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MessageUnusedFunction:
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MessagePauseContinue:
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; mov ax,ERROR_INVALID_FUNCTION
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mov ax,2142 ; NERR_InvalidAPI
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stc
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retn
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ResidentCodeEnd
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end
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