82 lines
2.3 KiB
NASM
82 lines
2.3 KiB
NASM
|
PAGE,132
|
||
|
|
;***************************************************************************
|
||
|
|
;*
|
||
|
|
;* DLLENTRY.ASM
|
||
|
|
;*
|
||
|
|
;* VER.DLL Entry code
|
||
|
|
;*
|
||
|
|
;* This module generates a code segment called INIT_TEXT.
|
||
|
|
;* It initializes the local heap if one exists and then calls
|
||
|
|
;* the C routine LibMain() which should have the form:
|
||
|
|
;* BOOL FAR PASCAL LibMain(HANDLE hInstance,
|
||
|
|
;* WORD wDataSeg,
|
||
|
|
;* WORD cbHeap,
|
||
|
|
;* LPSTR lpszCmdLine);
|
||
|
|
;*
|
||
|
|
;* The result of the call to LibMain is returned to Windows.
|
||
|
|
;* The C routine should return TRUE if it completes initialization
|
||
|
|
;* successfully, FALSE if some error occurs.
|
||
|
|
;*
|
||
|
|
;**************************************************************************
|
||
|
|
|
||
|
|
INCLUDE CMACROS.INC
|
||
|
|
|
||
|
|
externFP <LIBMAIN> ;The C routine to be called
|
||
|
|
|
||
|
|
ifndef SEGNAME
|
||
|
|
SEGNAME equ <_TEXT> ; default seg name
|
||
|
|
endif
|
||
|
|
|
||
|
|
createSeg %SEGNAME, CodeSeg, word, public, CODE
|
||
|
|
|
||
|
|
|
||
|
|
sBegin CodeSeg ; this defines what seg this goes in
|
||
|
|
assumes cs,CodeSeg
|
||
|
|
|
||
|
|
?PLM=0 ;'C'naming
|
||
|
|
externA <_acrtused> ;Ensures that Win DLL startup code is linked
|
||
|
|
|
||
|
|
?PLM=1 ;'PASCAL' naming
|
||
|
|
externFP <LOCALINIT> ;Windows heap init routine
|
||
|
|
|
||
|
|
cProc LibEntry, <PUBLIC,FAR> ;Entry point into DLL
|
||
|
|
|
||
|
|
cBegin
|
||
|
|
push di ;Handle of the module instance
|
||
|
|
push ds ;Library data segment
|
||
|
|
push cx ;Heap size
|
||
|
|
push es ;Command line segment
|
||
|
|
push si ;Command line offset
|
||
|
|
|
||
|
|
;** If we have some heap then initialize it
|
||
|
|
jcxz callc ;Jump if no heap specified
|
||
|
|
|
||
|
|
;** Call the Windows function LocalInit() to set up the heap
|
||
|
|
;** LocalInit((LPSTR)start, WORD cbHeap);
|
||
|
|
|
||
|
|
xor ax,ax
|
||
|
|
cCall LOCALINIT <ds, ax, cx>
|
||
|
|
or ax,ax ;Did it do it ok ?
|
||
|
|
jz error ;Quit if it failed
|
||
|
|
|
||
|
|
;** Invoke the C routine to do any special initialization
|
||
|
|
|
||
|
|
callc:
|
||
|
|
call LIBMAIN ;Invoke the 'C' routine (result in AX)
|
||
|
|
jmp short exit ;LibMain is responsible for stack clean up
|
||
|
|
|
||
|
|
error:
|
||
|
|
pop si ;Clean up stack on a LocalInit error
|
||
|
|
pop es
|
||
|
|
pop cx
|
||
|
|
pop ds
|
||
|
|
pop di
|
||
|
|
exit:
|
||
|
|
|
||
|
|
cEnd
|
||
|
|
|
||
|
|
sEnd _thisseg
|
||
|
|
|
||
|
|
END LibEntry
|
||
|
|
|