Category : C++ Source Code
Archive : VCCRT1.ZIP
Filename : PUREVIRT.ASM
Output of file : PUREVIRT.ASM contained in archive : VCCRT1.ZIP
title purevirt - Pure virtual function stubs
;***
;purevirt.asm - Stubs for pure virtual functions
;
; Copyright (c) 1992, Microsoft Corporation. All rights reserved.
;
;Purpose:
; Defines _purecall, _npurecall and _fpurecall. These are stubs used
; by the compiler to catch pure virtual function calls and map them
; to a fatal runtime error (_RT_PUREVIRT).
;
;*******************************************************************************
?DF = 1
include version.inc
.xlist
include cmacros.inc
include defsegs.inc
include rterr.inc
.list
CrtDefSegs
CrtDefSegs
sBegin nmsg
_RTERR _RT_PUREVIRT, _RT_PUREVIRT_TXT, _RT_STANDARD ; "attempted pure virtual
; function call"
sEnd
sBegin npad
dw -1
; no padding for now, though 20 would be about right.
; db 20 dup(0)
sEnd
sBegin code
assumes cs, code
extrn __amsg_exit:near
page
;***
;void _purecall (void)
;void __near _npurecall(void)
;void __far _fpurecall(void)
;
;Purpose:
; Call _amsg_exit with _RT_PUREVIRT. Used by the compiler to trap calls
; to pure virtual functions.
;
;Entry:
; None.
;
;Exit:
; Does not return. Terminates app via _amsg_exit().
;
;Uses:
;
;Exceptions:
;
;*******************************************************************************
public C _purecall, _npurecall, _fpurecall
if sizeC
_purecall label far
else
_purecall label near
endif
_npurecall label near
_fpurecall label far
mov ax,_RT_PUREVIRT
jmp __amsg_exit
sEnd
end
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