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|
;; SCCSID = @(#)struc.inc 12.1 88/03/18
;;STRUC.INC--Stucture Macro Library
;;Version 2.20 08/08/86
;;Written by Eric C. Rasmussen
if @Version GE 600
option nokeyword: <.if, .elseif, .else, .endif, .while>
endif
if1
$noconj equ 0
$and equ 1
$or equ 2
$short equ 3
$near equ 4
$andor = 0
$temp = 0
$temp2 = 0
$dist = 0
$notype equ 10
$conjif equ 11
$iftype equ 12
$elsetype equ 13
$whiletype equ 14
$conjwhile equ 15
$repeattype equ 16
$conjuntil equ 17
$fortype equ 18
$conjleave equ 19
$StrucErr macro text
Structure error -- text
endm
j macro
endm
jn macro
endm
jbuild macro j1,j2
j1 macro tgt
.xcref j1
j2 tgt
endm
endm
irp x,<<jeq,je>,<jlt,jl>,<jgt,jg>,<jneq,jne>,<jnlt,jnl>,<jngt,jng>,<jnpe,jpo>,<jnpo,jpe>>
jbuild x
endm
irp x,<<jzero,jz>,<jnzero,jnz>,<jnonzero,jnz>,<jnnonzero,jz>,<jand,jnz>,<jnand,jz>,<jnnand,jnz>>
jbuild x
endm
irp x,<a,ae,b,be,c,e,g,ge,l,le,o,p,s,z,cxz>
jbuild jnn&x,j&x
endm
jncxz macro tgt
local skip
jcxz skip
jmp short tgt
skip:
endm
purge jbuild
$getconj macro p1,p2
$andor = $noconj
irp parm,<p1,p2>
ifnb <&parm>
irp x,<and,AND,or,OR>
ifidn <parm>,<x>
$andor = $&&&x
exitm
endif
endm
endif
endm
endm
$getdist macro p1,p2
irp parm,<p1,p2>
ifnb <parm>
irp x,<short,SHORT,near,NEAR>
ifidn <parm>,<x>
$dist = $&&&x
exitm
endif
endm
endif
endm
endm
$poke macro num,value
$st&num = value
.xcref $st&num
endm
$peek macro sym,num
sym = $st&num
endm
$push macro value
$st = $st+1
$poke %$st,value
endm
$pop macro sym
$peek sym,%$st
$st = $st-1
endm
$labl macro num
$l&num:
endm
$cjump macro lnum,tf,cond
local skip
if $dist eq $short
ifb <cond>
jmp short $l&lnum
else
ifidn <tf>,<f>
jn&cond $l&lnum
else
j&cond $l&lnum
endif
endif
else
ifnb <cond>
ifidn <tf>,<f>
j&cond skip
else
jn&cond skip
endif
endif
jmp $l&lnum
ifnb <cond>
skip:
endif
endif
endm
$cloop macro lnum,cond
loop&cond $l&lnum
endm
$test macro tgt,a1,a2,a3,a4,x1
ifb <a1>
$StrucErr <invalid condition>
else
ifb <a2>
$cjump %&tgt,a1
else
ifb <a3>
ifdif <a1>,<zero>
ifdif <a1>,<nonzero>
ifdif <a1>,<ZERO>
ifdif <a1>,<NONZERO>
$StrucErr <invalid condition>
exitm
endif
endif
endif
endif
or a2,a2
$cjump %&tgt,a1
else
ifb <a4>
cmp a1,a3
$cjump %&tgt,a2
else
ifb <x1>
ifdif <a1>,<bit>
ifdif <a1>,<BIT>
$StrucErr <invalid condition>
exitm
endif
endif
test a2,a4
$cjump %&tgt,a3
else
$StrucErr <invalid condition>
endif
endif
endif
endif
endif
endm
$toptest macro args,ntype,ctype,p4,p5
$getconj p4,p5
$dist = $defdist
$getdist p4,p5
if $andor eq $noconj
$test <$sn-1,f>,args
$pop $temp
if $orfound
$labl %$temp
endif
$push ntype
else
if $andor eq $and
$test <$sn-1,f>,args
else
$orfound = 1
$test <$sn,t>,args
endif
$push ctype
endif
endm
;;*****************************************************************************
.if macro tst,p2,p3
$peek $temp,%$st
if $temp eq $conjif
$pop $temp
else
$push $elseiffound
$elseiffound = 0
$orfound = 0
$sn = $sn+1
$push $sn
$sn = $sn+1
$push $sn
$sn = $sn+1
$push $sn
endif
$toptest <tst>,$iftype,$conjif,p2,p3
endm
;;*****************************************************************************
.then macro
$peek $temp,%$st
if $temp ne $iftype
$StrucErr <then without if>
endif
endm
;;*****************************************************************************
.elseif macro tst,p2,p3
$pop $temp
if $temp ne $iftype
$StrucErr <elseif without if>
exitm
endif
$elseiffound = 1
$orfound = 0
$pop $temp
$peek $temp2,%$st
$dist = $near
$cjump %$temp2
$labl %$temp
$sn = $sn+1
$push $sn
$sn = $sn+1
$push $sn
$toptest <tst>,$iftype,$conjif,p2,p3
endm
;;*****************************************************************************
.else macro dist
$pop $temp
if $temp ne $iftype
$StrucErr <else without if>
exitm
endif
$sn = $sn+1
$dist = $defdist
$getdist dist
$cjump %$sn
$pop $temp
$labl %$temp
$push $sn
$push $elsetype
endm
;;*****************************************************************************
.endif macro
$pop $temp
if $temp ne $iftype
if $temp ne $elsetype
$StrucErr <endif without if>
exitm
endif
endif
$pop $temp
$labl %$temp
$pop $temp
if $elseiffound
$labl %$temp
endif
$pop $elseiffound
endm
;;*****************************************************************************
.while macro tst,p2,p3
$peek $temp,%$st
if $temp eq $conjwhile
$pop $temp
else
$push $endloop
$orfound = 0
$sn = $sn + 1
$push $sn
$labl %$sn
$sn = $sn + 2
$push $sn
$endloop = $sn - 1
endif
$toptest <tst>,$whiletype,$conjwhile,p2,p3
endm
;;*****************************************************************************
.endwhile macro
$pop $temp
if $temp ne $whiletype
$StrucErr <endwhile without while>
exitm
endif
$pop $temp
$dist = $near
$cjump %$temp
$labl %$temp+1
$pop $endloop
endm
;;*****************************************************************************
;OS2SS-.repeat macro
;OS2SS- $push $endloop
;OS2SS- $push $leavefound
;OS2SS- $sn = $sn+1
;OS2SS- $labl %$sn
;OS2SS- $push $sn
;OS2SS- $push $repeattype
;OS2SS- $sn = $sn+1
;OS2SS- $endloop = $sn
;OS2SS- $leavefound = 0
;OS2SS-endm
;;*****************************************************************************
;OS2SS-.until macro tst,p2,p3
;OS2SS- $until_2 p2,p3,tst
;OS2SS-endm
;OS2SS-$until_2 macro p2,p3,a1,a2,a3,a4,x1
;OS2SS- $pop $temp
;OS2SS- if $temp ne $repeattype
;OS2SS- if $temp ne $conjuntil
;OS2SS- $StrucErr <until without repeat>
;OS2SS- exitm
;OS2SS- endif
;OS2SS- else
;OS2SS- $orfound = 0
;OS2SS- endif
;OS2SS- $dist = $defdist
;OS2SS- $getdist p2,p3
;OS2SS- $getconj p2,p3
;OS2SS-
;OS2SS- if $andor eq $noconj
;OS2SS- $pop $temp
;OS2SS- ifb <a1>
;OS2SS- $dist = $near
;OS2SS- $cjump %$temp,f
;OS2SS- else
;OS2SS- $test <$temp,f>,<a1>,<a2>,<a3>,<a4>,<x1>
;OS2SS- endif
;OS2SS- if $orfound or $leavefound
;OS2SS- $labl %$temp+1
;OS2SS- endif
;OS2SS- $pop $leavefound
;OS2SS- $pop $endloop
;OS2SS- else
;OS2SS- $peek $temp,%$st
;OS2SS- if $andor eq $and
;OS2SS- $test <$temp,f>,<a1>,<a2>,<a3>,<a4>,<x1>
;OS2SS- else
;OS2SS- $orfound = 1
;OS2SS- $test <$temp+1,t>,<a1>,<a2>,<a3>,<a4>,<x1>
;OS2SS- endif
;OS2SS- $push $conjuntil
;OS2SS- endif
;OS2SS-endm
;;*****************************************************************************
;OS2SS-.loop macro cond
;OS2SS- $pop $temp
;OS2SS- if $temp ne $repeattype
;OS2SS- $StrucErr <loop without repeat>
;OS2SS- exitm
;OS2SS- endif
;OS2SS- $pop $temp
;OS2SS- $cloop %$temp,cond
;OS2SS- if $leavefound
;OS2SS- $labl %$temp+1
;OS2SS- endif
;OS2SS- $pop $leavefound
;OS2SS- $pop $endloop
;OS2SS-endm
;;*****************************************************************************
;OS2SS-.for macro index,equals,start,to,stop,by,step,dist
;OS2SS- mov index,start
;OS2SS- $push $endloop
;OS2SS- $sn = $sn+1
;OS2SS- $push $sn
;OS2SS- $labl %$sn
;OS2SS- $sn = $sn+1
;OS2SS- $endloop = $sn
;OS2SS- cmp index,stop
;OS2SS- $dist = $defdist
;OS2SS- ifb <step>
;OS2SS- $push 1
;OS2SS- $getdist by
;OS2SS- $cjump %$sn,t,gt
;OS2SS- else
;OS2SS- $getdist dist
;OS2SS- $push %(step)
;OS2SS- if step lt 0
;OS2SS- $cjump %$sn,t,lt
;OS2SS- else
;OS2SS- $cjump %$sn,t,gt
;OS2SS- endif
;OS2SS- endif
;OS2SS- $push $fortype
;OS2SS-endm
;;*****************************************************************************
;OS2SS-.next macro index
;OS2SS- $pop $temp
;OS2SS- if $temp ne $fortype
;OS2SS- $StrucErr <next without for>
;OS2SS- exitm
;OS2SS- endif
;OS2SS- $pop $temp
;OS2SS- if $temp eq 1
;OS2SS- inc index
;OS2SS- else
;OS2SS- if $temp eq -1
;OS2SS- dec index
;OS2SS- else
;OS2SS- add index,$temp
;OS2SS- endif
;OS2SS- endif
;OS2SS- $pop $temp
;OS2SS- $dist = $near
;OS2SS- $cjump %$temp
;OS2SS- $labl %$temp+1
;OS2SS- $pop $endloop
;OS2SS-endm
;;*****************************************************************************
;OS2SS-.leave macro tst,p2,p3
;OS2SS- $leave_2 p2,p3,tst
;OS2SS-endm
;OS2SS-$leave_2 macro p2,p3,a1,a2,a3,a4,x1
;OS2SS- ife $endloop
;OS2SS- $StrucErr <leave outside a loop>
;OS2SS- exitm
;OS2SS- endif
;OS2SS- $leavefound = 1
;OS2SS- $peek $temp,%$st
;OS2SS- if $temp eq $conjleave
;OS2SS- $pop $temp
;OS2SS- else
;OS2SS- $orfound = 0
;OS2SS- $sn = $sn + 1
;OS2SS- endif
;OS2SS- $dist = 0
;OS2SS- $getdist <a1>
;OS2SS- if $dist
;OS2SS- $cjump %$endloop
;OS2SS- if $orfound
;OS2SS- $labl %$sn
;OS2SS- endif
;OS2SS- else
;OS2SS- $dist = $defdist
;OS2SS- $getdist p2,p3
;OS2SS- $getconj p2,p3
;OS2SS-
;OS2SS- if $andor eq $noconj
;OS2SS- ifb <a1>
;OS2SS- $cjump %$endloop,t
;OS2SS- else
;OS2SS- $test <$endloop,t>,<a1>,<a2>,<a3>,<a4>,<x1>
;OS2SS- endif
;OS2SS- if $orfound
;OS2SS- $labl %$sn
;OS2SS- endif
;OS2SS- else
;OS2SS- if $andor eq $and
;OS2SS- $orfound = 1
;OS2SS- $test <$sn,f>,<a1>,<a2>,<a3>,<a4>,<x1>
;OS2SS- else
;OS2SS- $test <$endloop,t>,<a1>,<a2>,<a3>,<a4>,<x1>
;OS2SS- endif
;OS2SS- $push $conjleave
;OS2SS- endif
;OS2SS- endif
;OS2SS-endm
;;*****************************************************************************
else
$pop $temp
if $temp ne $notype
$StrucErr <open structure(s)>
endif
.xcref $noconj,$and,$or,$short,$near,$andor,$temp,$temp2,$dist
.xcref $notype,$conjif,$iftype,$elsetype,$whiletype,$conjwhile
.xcref $repeattype,$conjuntil,$fortype,$conjleave,jncxz
.xcref jeq,jgt,jlt,jneq,jngt,jnlt,jnna,jnnae,jnnb,jnnbe,jnnc,jnncxz
.xcref jnne,jnng,jnnge,jnnl,jnnle,jnno,jnnp,jnns,jnnz,jnpe,jnpo,jbuild
.xcref $getconj,$getdist,$poke,$peek,$push,$pop,$labl,$cjump,$cloop,$test
;OS2SS-.xcref $toptest,$leave_2,$until_2,$strucerr,j,jn,jand,jnand,jnnand
.xcref $toptest,$strucerr,j,jn,jand,jnand,jnnand
.xcref jnnonzero,jnonzero,jnzero,jzero
.xcref $st,$sn,$orfound,$elseiffound,$endloop,$leavefound,$defdist
endif
$st = 0
$sn = 0
$orfound = 0
$elseiffound = 0
$endloop = 0
$leavefound = 0
$defdist = $short
$push %$notype
|
