$IsMem MACRO Operand:REQ
	IF (OPATTR (Operand)) AND 00000010y
		;; Is a memory variable or has a relocatable data label
		EXITM <-1>              ;; True
	ELSE
		EXITM <0>               ;; False
	ENDIF
ENDM

$IsImm MACRO Operand:REQ
	IF (OPATTR (Operand)) AND 00000100y
		;; Is an immediate value
        EXITM <-1>
    ELSE
        EXITM <0>
    ENDIF
ENDM

$IsDirMemAddr MACRO Operand:REQ
	IF (OPATTR (Operand)) AND 00001000y
		;; Uses direct memory addressing
        EXITM <-1>
	ELSE
        EXITM <0>
	ENDIF
ENDM

$IsReg MACRO Operand:REQ
	IF (OPATTR (Operand)) AND 00010000y
		;; Is a register value
        EXITM <-1>
    ELSE
        EXITM <0>
    ENDIF
ENDM

$IsNoError MACRO Operand:REQ
	IF (OPATTR (Operand)) AND 00100000y
		;; References no undefined symbols and is without error
        EXITM <-1>
	ELSE
        EXITM <0>
	ENDIF
ENDM

$IsStack MACRO Operand:REQ
	IF (OPATTR (Operand)) AND 01000000y
		;; relative to SS
        EXITM <-1>
    ELSE
        EXITM <0>
    ENDIF
ENDM

$IsExtLabel MACRO Operand:REQ
	IF (OPATTR (Operand)) AND 10000000y
		;; References an external label
        EXITM <-1>
	ELSE
        EXITM <0>
	ENDIF
ENDM

$IsAddr MACRO Operand:REQ
local a
	a = 0

	IF @SizeStr(<Operand>) GT 5		
		IFIDNI <addr >, @SubStr(<Operand>, 1 , 5)
			a = 1
		ENDIF
	ENDIF

	IF a
        EXITM <-1>
    ELSE
        EXITM <0>
    ENDIF
ENDM

$IsByte MACRO Operand:REQ
local r, f
	f = 0
	IF (TYPE Operand) EQ 1
        EXITM <-1>
	ELSE			; dunno why, but (TYPE al, bl..) doesn't work
		FOR r, <al,ah,bl,bh,cl,ch,dl,dh,>
			IFIDNI <Operand>, <r>
				f = 1
				EXITM
			ENDIF
		ENDM
		IF f
			EXITM <-1>
		ELSE
			EXITM <0>
		ENDIF
	ENDIF
ENDM

$IsWord MACRO Operand:REQ
	IF (TYPE Operand) EQ 2
        EXITM <-1>
	ELSE
        EXITM <0>
	ENDIF
ENDM

$IsDword MACRO Operand:REQ
	IF (TYPE Operand) EQ 4
        EXITM <-1>
	ELSE
        EXITM <0>
	ENDIF
ENDM

ECHONUM MACRO n:REQ
	local tn
	tn TEXTEQU %n
	% ECHO tn
ENDM

;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

m2m MACRO Des:REQ, Sor:REQ, Reg

	IFB <Reg>
	    push Sor					;; Default size optimization
		pop  Des
	ELSE
		IF $IsReg(Reg)
			mov Reg, Sor
			mov Des, Reg
		ELSE
			.ERR <m2m macro ERROR! Specify register value as third param.>
		ENDIF
	ENDIF
        
ENDM

;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

mrm MACRO Des:REQ, Sor:REQ
    mov eax, Sor
	mov Des, eax
ENDM

;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

;; Usage:          Assembles to:
;; Return          -> ret
;; Return ebx      -> mov eax, ebx / ret
;; Return FALSE    -> xor eax, eax / ret
;; Return TRUE     -> xor eax, eax / inc eax / ret
;; Return -1       -> xor eax, eax / dec eax / ret
;; Return Var      -> mov eax, [Var] / ret

return MACRO rv, flag

	IFNB <rv>
		IF $IsReg(rv)				;; register
			IFDIFI <rv>, <eax>		;; not eax
				mov eax, rv
			ENDIF
		ELSEIF $IsImm(rv)			;; immediate value
			IF rv EQ 0;;FALSE
				xor eax, eax
			ELSEIF rv EQ 1;;TRUE
				xor eax, eax
				inc eax
			ELSEIF rv EQ -1
				or eax, -1
				;;xor eax, eax
				;;dec eax
			ELSE
				mov eax, rv
			ENDIF
		ELSEIF $IsMem(rv)			;; memory varible
			mov eax, rv
		ELSE
			.ERR <return macro ERROR! Cant recognize type of return value>
		ENDIF
	ENDIF
    
	ret
    
ENDM

;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

$invoke MACRO vars:VARARG
     invoke vars
     EXITM <eax>
ENDM

;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

;; Return macro result
$RMR MACRO m:VARARG
	m
	EXITM <eax>
ENDM

;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

;; Retrieves low word from double word argument in eax

_LOWORD MACRO dwVar:REQ
	IFDIFI <dwVar>, <eax>	;; don't move eax onto itself
		mov eax, dwVar
	ENDIF
	and eax, 0FFFFh
ENDM

$LOWORD MACRO dwVar:REQ
	IF $IsImm(dwVar)
		EXITM <dwVar AND 0FFFFh>
	ELSE
		EXITM $RMR(_LOWORD dwVar)
	ENDIF
ENDM

;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

;; Retrieves hi word from double word argument in eax

_HIWORD MACRO dwVar:REQ
	IFDIFI <dwVar>, <eax>	;; don't move eax onto itself
		mov eax, dwVar
	ENDIF
	shr eax, 16
ENDM

$HIWORD MACRO dwVar:REQ
	IF $IsImm(dwVar)
		EXITM <dwVar SHR 16>
	ELSE
		EXITM $RMR(_HIWORD dwVar)
	ENDIF
ENDM


;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
;                                       Fix helper macro                                            
;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

Fix MACRO txt:=<Fix this later!!!!>
	local pos, spos

	pos = 0
	spos = 0

	% FORC chr, @FileCur		;; Don't display full path. Easier to read.
		pos = pos + 1
		IF "&chr" EQ 5Ch		;; "/"
			spos = pos
		ENDIF
	ENDM

	% ECHO @CatStr(<Fix: >, @SubStr(%@FileCur, spos+1,), <(%@Line) - txt>)
ENDM