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Source Code 1992 March
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MIXED.INC
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1987-07-31
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; High-Level-Language Interface Macros - Version 1.0
; for Microsoft Macro Assembler 5.0
; (C) Copyright Microsoft Corporation, 1987.
; Syntax Purpose
; ------ -------
;
; setModel Sets model from text equate
;
; hProc <name [NEAR|FAR]> [,<USES reglist>] [,arg[:type] [,arg[:type]]]...
; Starts a procedure with optional stack arguments
;
; hLocal var[:type] [,var[:type]]...
; Defines local stack variables
;
; hRet Returns from the current procedure
;
; hEndp Ends the current procedure
;
; ifFP statement Assembles statement if far data
;
; FPoperand Conditionally provides ES override for data
;
; pLes register,address Conditionally loads data through ES
;
; pLds register,address Conditionally loads data through DS
if1
; Set model passed from command line
setModel macro
setModelDoit %model
endm
setModelDoit macro option
.model option
endm
; Declare high level routine and parameters
hProc macro funName, a,b,c,d,e,f,g,h,i,j
; FP - supply far pointer ES overide as needed
if @Datasize
FP equ <es:>
else
FP equ < >
endif
cParm=0
cbLocals=0
argBase = 2 + @CodeSize*2
cbReturn = 0
localBase = 2
tokenize funName
adjustType %token1
conCat procName, %token0
conCat nearFar, %token1
tokenize a
hScanParms %token0, <a>, b,c,d,e,f,g,h,i,j
hProcFinish %procName, %nearFar, %regPushed
endm
; Preprocess arg list to save registers
hScanParms macro use, regList, b,c,d,e,f,g,h,i,j
ifidni <use>,<uses>
regPushed equ <regList>
hScanArgs b,c,d,e,f,g,h,i,j
else
regPushed equ <>
hScanArgs regList,b,c,d,e,f,g,h,i,j
endif
endm
; Scan parameter list to process args
hScanArgs macro a,b,c,d,e,f,g,h,i,j
irp arg,<a,b,c,d,e,f,g,h,i,j>
ifb <arg>
exitm
endif
fetType arg
ifdef cLang
createArg %argNameCur, %typeNameCur, %argBase+cParm+2
else
createArg %argNameCur, %typeNameCur, %argBase-cbType-cParm,+cParm
endif
cParm = cParm + cbType + 2
endm
endm
; Generate procedure and stack frame
hProcFinish macro funName, nearFar, regList
ifdef cLang
funNameCur equ <_&funName>
else
funNameCur equ <funName>
cbReturn = cParm
endif
funNameCur proc nearFar
public funNameCur
if cParm
push Bp
mov Bp,Sp
endif
pushReg regList
endm
; Save registers
pushReg macro use,b,c,d,e,f,g
regPushed equ <>
irp reg, <b,c,d,e,f,g>
ifb <reg>
exitm
endif
conCat regPushed, <,> %regPushed
conCat regPushed, reg, %regPushed
push reg
localBase = localBase + 2
endm
endm
; Declare local stack variables
hLocal macro a,b,c,d,e,f,g,h,i,j
irp arg,<a,b,c,d,e,f,g,h,i,j>
ifb <arg>
exitm
endif
fetType arg
createArg %argNameCur, %typeNameCur, %-cbLocals-localBase
cbLocals = cbLocals + cbType + 2
endm
ife cParm ; Create empty frame if no params
push Bp
mov Bp,Sp
endif
sub Sp,cbLocals
endm
; Split argment into argNameCur and typeNameCur
fetType macro arg
cbType=0
fColon=0
argNameCur equ < >
typeNameCur equ < >
.xcref fColon, argNameCur
irpc aChar,arg
if fColon
conCat typeNameCur, %typeNameCur, aChar
else
ifidni <aChar>,<:>
fColon=1
else
conCat argNameCur,%argNameCur,aChar
endif
endif
endm
adjustType %typeNameCur
endm
; Tokenize arg into text macro name tokenN
tokenize macro a,b,c,d,e,f,g,h,i,j
cPart = 0
doTokenSet 1
irp aWord,<a,b,c,d,e,f,g,h,i,j>
ifb <aWord>
exitm
endif
doTokenSet %cPart, aWord
cPart = cPart+1
endm
endm
; Set tokenN to a value
doTokenSet macro tokenNum, aWord
token&tokenNum equ <aWord>
endm
; Map typeName to byte count and ptr size
adjustType macro typeName
ifb <typeName>
cbType = 0
typeNameCur equ <word>
exitm
endif
ifidni <typeName>,<byte>
cbType = 0
exitm
endif
ifidni <typeName>,<word>
cbType = 0
exitm
endif
ifidni <typeName>,<dword>
cbType = 2
exitm
endif
ifidni <typeName>,<ptr>
cbType = (1 + @DataSize) AND 2
if (cbType EQ 2)
typeNameCur equ <dword>
else
typeNameCur equ <word>
endif
exitm
endif
ifidni <typeName>,<fword>
cbType = 4
exitm
endif
ifidni <typeName>,<qword>
cbType = 6
exitm
endif
ifidni <typeName>,<tword>
cbType = 8
exitm
endif
ifidni <typeName>,<near>
argBase = 2
exitm
endif
ifidni <typeName>,<far>
argBase = 4
endif
endm
; Concatenate a character to a text macro
conCat macro symbol,text,char
symbol equ <text&char>
endm
; Create text macro for an arg
createArg macro argName, typeName, offsetParm, argFactor
argName equ <typeName ptr [Bp]+offsetParm&argFactor>
endm
; Generate high level return
hRet macro
popRegs %regPushed
if cParm or cbLocals
pop Bp
endif
ret cbReturn
endm
; Restore saved registers
popRegs macro regList
if cbLocals
ifnb <regList>
add Sp,cbLocals
else
mov Sp,Bp
endif
endif
irp reg, <regList>
ifnb <reg>
pop reg
endif
endm
endm
; End a high level procedure
hEndp macro
funNameCur endp
endm
; Execute instruction if far data
ifFP macro a,b,c,d,e,f,g,h,i,j
if @datasize
a b c d e f g h i j
endif
endm
; Load 16/32 bit pointers into [ES:] reg
pLes macro reg, address
if @datasize
les reg,address
else
mov reg,address
endif
endm
;Load 16/32 bit pointers into [DS:] reg
pLds macro reg, address
if @datasize
lds reg,address
else
mov reg,address
endif
endm
.xcref createArg, conCat, fetType, cbType, argBase, pushReg, hScanArgs, hScanParms
.xcref adjustType, typeNameCur, setModelDoit, tokenize, dotokenSet
.xcref token0, token1, regPushed, hProcFinish, procName, localBase, popRegs
endif ; Define on pass1 only