;*** 
;os2supp.inc - helper macros for OS/2, MTHREAD, and DLL support
;
;	Copyright (c) 1987-88, Microsoft Corporation
;
;Purpose:
;	Support for OS/2, MTHREAD, and DLL support
;
;Revision History:
;
;   08-25-88 WAJ    Added this header.	Added to 386 tree.
;
;*******************************************************************************


ifdef	MTHREAD
    OS2SUPP equ     1
else
    OS2SUPP equ     0
endif

__MsgString equ     <>

ifdef	MTHREAD
__MsgString catstr __MsgString, < MTHREAD>
endif

ifdef	SS_NEQ_DGROUP
__MsgString catstr __MsgString, < SS_NEQ_DGROUP>
endif

ifdef	DLL
__MsgString catstr __MsgString, < DLL>
endif

__SMsgString  sizestr __MsgString

if  __SMsgString
    if OS2SUPP
	__MsgString catstr <OS/2 Support Lib ->, __MsgString
    else
	__MsgString catstr <Support Lib ->, __MsgString
    endif
    ifndef QUIET
%	display __MsgString
    endif
endif


_loadds 	macro		;; code for loading ds with DGROUP
	push	ds
	mov	ax,DGROUP
	mov	ds,ax
endm	

_reloadds	macro		;; code for resetting ds
	pop	ds
endm	




ifmt	macro	code
    ifdef   MTHREAD
	code
    endif
endm

nomt	macro	code
    ifndef  MTHREAD
	code
    endif
endm

ifdll	macro	code
    ifdef   DLL
	code
    endif
endm


if_LOAD_DGROUP	macro	code
    ifdef  _LOAD_DGROUP
	code
    endif
endm

no_LOAD_DGROUP	macro	code
    ifndef  _LOAD_DGROUP
	code
    endif
endm